Highway infrastructure plays a crucial role in the healthy development of the social economy.Therefore,China has invested a lot of financial resources in the construction of road and bridge projects in recent years,re...Highway infrastructure plays a crucial role in the healthy development of the social economy.Therefore,China has invested a lot of financial resources in the construction of road and bridge projects in recent years,resulting in the rise in scale and number of road and bridge projects.Simultaneously,the quality of road bridges has garnered widespread attention,necessitating an exploration of common hazards associated with road bridges and the significance of their reinforcement.It is essential to delve into specific technical methods to enhance the quality and service life of road bridges.This paper elaborates on the common hazards faced by road bridges and proposes maintenance and reinforcement strategies to promote the healthy development of road bridge engineering.展开更多
Due to the increasing number of large and heavy transportation vehicles, the road and bridge are facing great pressure. In order to better deal with and solve such pressure, the construction quality problem of bored p...Due to the increasing number of large and heavy transportation vehicles, the road and bridge are facing great pressure. In order to better deal with and solve such pressure, the construction quality problem of bored piles should be properly solved, which is beneficial to control the adverse factors in the construction and provide basic guarantee for the quality of roads and bridges. Common quality problems in the construction of bored piles for urban road bridges include: hole collapse, borehole deviation, cage floating, pile breaking, warp shrinkage, etc. Therefore, the quality problems of the cast-in-place pile and the solutions should be discussed in depth, the causes of the problems should be analyzed, and prevention suggestions should be provided.展开更多
This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impac...This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impact resistance,fatigue resistance and high toughness,and introduces its applications in scenarios such as bridge deck pavement,expansion joints and tunnel opening sections.The key points of construction techniques such as material ratio and fiber selection,mixing,pouring and vibration,as well as quality control difficulties and solutions such as steel fiber dispersion,shrinkage cracks and temperature control was analyzed.The development trends of intelligent material research and development and automated construction technology,and propose application suggestions for engineering design and construction management was discussed in this study,which can serve as a references to improve the quality of road and bridge engineering.展开更多
Load limits,which appear to be routinely exceeded by trucks,occasionally result in road bridge failures.Therefore,predicting failures is crucial for safeguarding road safety.Past studies have largely focused on foreca...Load limits,which appear to be routinely exceeded by trucks,occasionally result in road bridge failures.Therefore,predicting failures is crucial for safeguarding road safety.Past studies have largely focused on forecasting bridge failure event probability using the reliability analysis method,whilst occasionally accounting for vehicular overloading effects.Only recently,a study has investigated design traffic overloading event frequency using generalised linear regression models(GLRMs),including a power component and negative binomial regressions(NBRs).However,as far as the authors know,artificial neural network models(ANNMs)have never been applied to this field.This paper is an attempt to fill in these gaps.First a frequencybased metric of traffic overloading was adopted as a driver of failure probability.Second,two alternative‘frequency'models were specified,calibrated,and validated.The former was based on a GLRM,the latter on ANNMs.Then,these models were compared using regression plots(RPs),measures of errors(Mo Es)and the ratio between the number of observed vs predicted design load overcoming events to evaluate their performance.The models analysed more than 2 million weigh-in-motion(WIM)data records from a pilot station on a bridge on a heavily used ring road in Brescia(Italy).Results showed that ANNMs outperformed GLRMs.ANNMs have a higher correlation coefficient(between predicted and target frequencies),lower Mo Es,and a closer-to-unity ratio(between predicted and target frequencies).These findings may increase prediction accuracy of design traffic overloading events and give road authorities more effective traffic management to protect bridges from load hazards.展开更多
Quality inspection is an important means to ensure that the construction quality of roads and bridges meets the standard requirements. In recent years, with the progress of science and technology, the road and bridge ...Quality inspection is an important means to ensure that the construction quality of roads and bridges meets the standard requirements. In recent years, with the progress of science and technology, the road and bridge quality detection technology began to develop in the direction of diversification and informatization, which greatly improved the accuracy of the detection results and effectively improved the damage caused to the road and bridge structure by the traditional detection technology. On the basis of not damaging the original structure, the efficiency and quality of quality detection are improved. Based on this, this paper will analyze the application of nondestructive testing technology in road and bridge testing.展开更多
In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stre...In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stress classification are emphasized. We pointed out that the stress decomposition only relates how stress is decomposed into uniform stress, the equivalent stress distribution of linear and nonlinear stress components, how will break out of stress classification, entirely by the stress position and stress the external decision. At the same time, it also gives a valuable perspective on the distribution twe ofoeak stress, the self limitation and the stress decomposition and classification.展开更多
The main material of concrete is a construction building material composed of water and mineral mixture and cement and chemical additives in the corresponding proportion and below the standard.In the process of making...The main material of concrete is a construction building material composed of water and mineral mixture and cement and chemical additives in the corresponding proportion and below the standard.In the process of making concrete material,slurry and cement are needed to mix,then cement slurry and sand are mixed into mortar according to the corresponding proportion,and aggregate is added to mortar to form concrete building material.In the process of concrete preparation,the most important construction link is mixing,which needs to be fully stirred to make the performance of concrete meet the construction needs.In the process of concrete construction technology development,both mix ratio and production technology have become more and more mature,but there are still some problems,which have an impact on the quality of concrete[1].Therefore,this paper discusses the quality control of concrete raw materials according to the construction process of road and bridge.展开更多
The contents of mechanical equipment management and maintenance mainly include analyzing the causes of equipment faults and replacing the fault parts and strengthening the inspection work. The significance of road and...The contents of mechanical equipment management and maintenance mainly include analyzing the causes of equipment faults and replacing the fault parts and strengthening the inspection work. The significance of road and bridge construction machinery and equipment management and maintenance is to ensure the normal operation of the equipment, continuously introduce new technologies, improve the service performance of the equipment, ensure the stable production of the equipment, help enterprises save costs and ensure the safe production of enterprises.展开更多
Bridge plays an important role in highway engineering. Among them, the pile foundation is the foundation structure of the bridge, which is not conducive to the smooth progress of the construction in case of special ge...Bridge plays an important role in highway engineering. Among them, the pile foundation is the foundation structure of the bridge, which is not conducive to the smooth progress of the construction in case of special geological conditions such as karst caves. If there is no effective treatment measures, it is easy to have problems such as drilling loss, hammer sticking and hole collapse, which seriously threaten the stability of the pile foundation and even the whole bridge. In order to ensure that the bored piles meet the requirements of the quality standards, the construction procedures of pile position measurement, casing embedding, mud preparation, drilling, hole cleaning and concrete pouring should be done well, so that the bridge foundation can be completed according to the quality, quantity and time.展开更多
At present, the application scope of road and bridge engineering construction technology in our country is gradually expanding, but the construction technology adopted by most construction teams in our country is not ...At present, the application scope of road and bridge engineering construction technology in our country is gradually expanding, but the construction technology adopted by most construction teams in our country is not advanced enough, which causes great damage to the environment and even wastes resources. The new technology has brought great impact to the bridge construction technology, and has a direct impact on the sustainable development of the construction industry. Therefore, it is necessary to integrate the green development mode into the actual engineering construction, so as to extend the service life of the road and bridge. In view of this, this paper first briefly analyzes the concept of green construction and the significance of highway green construction, and then discusses in detail the main types of pollution existing in the process of highway construction and highway construction technology under the environment of green construction.展开更多
With the rapid updating of science and technology, many new energy-saving materials and new technologies have emerged in the bridge construction, which has brought great impact on the bridge construction technology an...With the rapid updating of science and technology, many new energy-saving materials and new technologies have emerged in the bridge construction, which has brought great impact on the bridge construction technology and has a direct impact on the sustainable development of the construction industry. Therefore, it is necessary to integrate the green development mode into the actual engineering construction, so as to extend the service life of roads and bridges. With the increasingly serious environmental problems, the problems exposed in the actual construction process of roads and bridges are also gradually increasing. Based on this, this paper analyzes the application of green construction technology in road and bridge construction.展开更多
In recent years, the traffic pressure is increasing. It is of great practical significance to effectively relieve the traffic pressure, improve the transportation efficiency and speed up the road and bridge constructi...In recent years, the traffic pressure is increasing. It is of great practical significance to effectively relieve the traffic pressure, improve the transportation efficiency and speed up the road and bridge construction. In the concrete implementation process, not only technical support, but also safety management should be done well, because this is not only related to the quality of roads and bridges, but also closely related to the traffic safety of pedestrians and vehicles. Therefore, based on the problem, this paper puts forward some suggestions for follow-up reference.展开更多
Road and bridge are one of the most important parts of social infrastructure, one of the most important conditions of economy and transportation, and the guarantee of people's basic life. However, there are many p...Road and bridge are one of the most important parts of social infrastructure, one of the most important conditions of economy and transportation, and the guarantee of people's basic life. However, there are many problems and shortcomings in road and bridge maintenance in our country, which have a serious impact on the overall quality of road and bridge projects and have greatly damaged the economic traffic and people's traffic. On this basis, a simple understanding of highway and bridge maintenance technology and solutions, and enhance the effectiveness of highway and bridge maintenance, to maintain highway and bridge safety.展开更多
With the development and progress of science and technology,road and bridge design has experienced rapid development,from the initial manual drawing design to the popularity of Computer-Aided Design(CAD),and then to t...With the development and progress of science and technology,road and bridge design has experienced rapid development,from the initial manual drawing design to the popularity of Computer-Aided Design(CAD),and then to today’s digital software design era.Early designers relied on hand-drawn paper design forms which was time-consuming and error-prone.Digital support for road and bridge design not only saves the design time but the design quality has also achieved a qualitative leap.This paper engages in the application of digital technology in road and bridge design,to provide technical reference for China’s road and bridge engineering design units,to promote the popularity of Civil3D and other advanced design software in the field of engineering design and development,ultimately contributing to the sustainable development of China’s road and bridge engineering.展开更多
Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, the prestressed constr...Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, the prestressed construction technology can greatly improve the engineering quality of road and bridge engineering, and it has the advantages of easy operation and low cost. Therefore, the use frequency of prestressed construction technology in road and bridge engineering is very high, but also can shorten the project period, improve the seismic capacity and carrying capacity of the bridge structure, actively promote the development of prestressed construction technology, can greatly improve the construction quality of bridge engineering. This paper starts from the prestress technology as the starting point, expounds the relevant concepts and the current situation, and then explains the specific application of the technology in the road and bridge construction, and finally summarizes the technical points that need to be paid attention to in the construction process. The aim is to deeply understand the prestressed construction technology of road and bridge construction, and to contribute to the construction of road and bridge construction in China.展开更多
Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, prestressed constructi...Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, prestressed construction technology can greatly improve the engineering quality of road and bridge engineering, and has the advantages of easy operation and low cost. Precast box girder has been widely used in road and bridge engineering. The common spans are 25m, 30m, 40m and so on. As a simply supported beam structure, the larger the span, the greater the bending moment in the beam under vehicle load. In the construction of roads and bridges, it is necessary to promote the application of prestressed construction technology, carry out construction operations in strict accordance with the key points of prestressed construction technology, improve the construction efficiency and construction quality of road and bridge projects, prolong the service life of road and bridge projects, and provide a strong guarantee for people's travel safety.展开更多
At present, in the construction process, we must attach great importance to the problem of soft soil foundation, strengthen the site investigation of hydrogeology and soil in the construction area, and reasonably sele...At present, in the construction process, we must attach great importance to the problem of soft soil foundation, strengthen the site investigation of hydrogeology and soil in the construction area, and reasonably select the treatment method of soft soil foundation, so that its strength and foundation bearing capacity meet the design standards and construction requirements, thus improving the overall construction quality of subgrade engineering and providing reliable guarantee for traffic safety. At the same time, construction units, design units and scientific research institutions should cooperate closely to make the new technology more mature and widely applicable.展开更多
Highway transportation occupies a very important position in the field of transportation in our country, especially with the continuous progress of the national economy, the load on the highway has also become larger,...Highway transportation occupies a very important position in the field of transportation in our country, especially with the continuous progress of the national economy, the load on the highway has also become larger, and the requirements for it have gradually increased. Our country attaches great importance to road transportation, and every year it will invest a lot of manpower, material resources and financial resources to carry out the construction of road bridges in order to meet the ever-increasing traffic requirements. In specific use, due to the long-term overload work and the difficulty in keeping up with the losses caused by road and bridge maintenance, a large number of roads and bridges that do not meet the design service life are now facing the problems of aging road surfaces and outdated equipment, which lead to poor driving experience, leading to major traffic safety accidents. This is undoubtedly not a huge obstacle to the increasing traffic demand of the society. Therefore, in order to avoid such incidents, the state should pay attention to the maintenance and management of roads and bridges.展开更多
As an important part of highway construction, highway and bridge engineering plays an important role in the development of traffic construction in China. Its construction management level has a decisive influence on t...As an important part of highway construction, highway and bridge engineering plays an important role in the development of traffic construction in China. Its construction management level has a decisive influence on the quality of highway and bridge engineering. Therefore, in the process of the construction of a highway bridge, management must realize the importance of construction management, the construction quality in the first place, establish the correct concept of construction management, fully grasp the construction cost management, the construction of a comprehensive management system, and strictly control the construction quality based on the quality of highway bridge engineering in our country as the research key. The problems existing in the construction management of highway and bridge engineering are deeply analyzed and discussed. On this basis, the concrete measures to solve these problems are put forward in order to promote the healthy and stable development of the country's road industry.展开更多
At present, some achievements have been made in the research of subgrade settlement in China, and the main research achievements are the optimization schemes for the problems such as bumping at bridge head during the ...At present, some achievements have been made in the research of subgrade settlement in China, and the main research achievements are the optimization schemes for the problems such as bumping at bridge head during the use of roads and bridges. For the construction of subgrade in transition section, the construction process and materials used can have a certain impact on the quality and safety performance of road and bridge. The harm brought by uneven subgrade is mainly that it is easy to form icing and water accumulation in rainy and snowy weather, which leads to out-of-control of vehicles and affects the driving safety of vehicles. Therefore, in order to improve and optimize the above problems, in the construction process, it is necessary to eliminate the factors that lead to uneven settlement of subgrade in a variety of ways to improve the safety and economic value of roads and bridges.展开更多
文摘Highway infrastructure plays a crucial role in the healthy development of the social economy.Therefore,China has invested a lot of financial resources in the construction of road and bridge projects in recent years,resulting in the rise in scale and number of road and bridge projects.Simultaneously,the quality of road bridges has garnered widespread attention,necessitating an exploration of common hazards associated with road bridges and the significance of their reinforcement.It is essential to delve into specific technical methods to enhance the quality and service life of road bridges.This paper elaborates on the common hazards faced by road bridges and proposes maintenance and reinforcement strategies to promote the healthy development of road bridge engineering.
文摘Due to the increasing number of large and heavy transportation vehicles, the road and bridge are facing great pressure. In order to better deal with and solve such pressure, the construction quality problem of bored piles should be properly solved, which is beneficial to control the adverse factors in the construction and provide basic guarantee for the quality of roads and bridges. Common quality problems in the construction of bored piles for urban road bridges include: hole collapse, borehole deviation, cage floating, pile breaking, warp shrinkage, etc. Therefore, the quality problems of the cast-in-place pile and the solutions should be discussed in depth, the causes of the problems should be analyzed, and prevention suggestions should be provided.
文摘This paper conducts practical research on the application of steel fiber reinforced concrete construction technology in road and bridge engineering.The study emphasized in its core advantages of tensile strength,impact resistance,fatigue resistance and high toughness,and introduces its applications in scenarios such as bridge deck pavement,expansion joints and tunnel opening sections.The key points of construction techniques such as material ratio and fiber selection,mixing,pouring and vibration,as well as quality control difficulties and solutions such as steel fiber dispersion,shrinkage cracks and temperature control was analyzed.The development trends of intelligent material research and development and automated construction technology,and propose application suggestions for engineering design and construction management was discussed in this study,which can serve as a references to improve the quality of road and bridge engineering.
基金partially funded by the Department of Civil,Environmental,Architectural Engineering and Mathematics(DICATAM),University of Brescia,within the research grant“valuation of the risk of fare evasion in an urban public transport network”,CUP:D73C22000770002。
文摘Load limits,which appear to be routinely exceeded by trucks,occasionally result in road bridge failures.Therefore,predicting failures is crucial for safeguarding road safety.Past studies have largely focused on forecasting bridge failure event probability using the reliability analysis method,whilst occasionally accounting for vehicular overloading effects.Only recently,a study has investigated design traffic overloading event frequency using generalised linear regression models(GLRMs),including a power component and negative binomial regressions(NBRs).However,as far as the authors know,artificial neural network models(ANNMs)have never been applied to this field.This paper is an attempt to fill in these gaps.First a frequencybased metric of traffic overloading was adopted as a driver of failure probability.Second,two alternative‘frequency'models were specified,calibrated,and validated.The former was based on a GLRM,the latter on ANNMs.Then,these models were compared using regression plots(RPs),measures of errors(Mo Es)and the ratio between the number of observed vs predicted design load overcoming events to evaluate their performance.The models analysed more than 2 million weigh-in-motion(WIM)data records from a pilot station on a bridge on a heavily used ring road in Brescia(Italy).Results showed that ANNMs outperformed GLRMs.ANNMs have a higher correlation coefficient(between predicted and target frequencies),lower Mo Es,and a closer-to-unity ratio(between predicted and target frequencies).These findings may increase prediction accuracy of design traffic overloading events and give road authorities more effective traffic management to protect bridges from load hazards.
文摘Quality inspection is an important means to ensure that the construction quality of roads and bridges meets the standard requirements. In recent years, with the progress of science and technology, the road and bridge quality detection technology began to develop in the direction of diversification and informatization, which greatly improved the accuracy of the detection results and effectively improved the damage caused to the road and bridge structure by the traditional detection technology. On the basis of not damaging the original structure, the efficiency and quality of quality detection are improved. Based on this, this paper will analyze the application of nondestructive testing technology in road and bridge testing.
文摘In this paper, some concepts and problems in the stress analysis design method are discussed. Based on the introduction of various types of stress characteristics, the differences between stress decomposition and stress classification are emphasized. We pointed out that the stress decomposition only relates how stress is decomposed into uniform stress, the equivalent stress distribution of linear and nonlinear stress components, how will break out of stress classification, entirely by the stress position and stress the external decision. At the same time, it also gives a valuable perspective on the distribution twe ofoeak stress, the self limitation and the stress decomposition and classification.
文摘The main material of concrete is a construction building material composed of water and mineral mixture and cement and chemical additives in the corresponding proportion and below the standard.In the process of making concrete material,slurry and cement are needed to mix,then cement slurry and sand are mixed into mortar according to the corresponding proportion,and aggregate is added to mortar to form concrete building material.In the process of concrete preparation,the most important construction link is mixing,which needs to be fully stirred to make the performance of concrete meet the construction needs.In the process of concrete construction technology development,both mix ratio and production technology have become more and more mature,but there are still some problems,which have an impact on the quality of concrete[1].Therefore,this paper discusses the quality control of concrete raw materials according to the construction process of road and bridge.
文摘The contents of mechanical equipment management and maintenance mainly include analyzing the causes of equipment faults and replacing the fault parts and strengthening the inspection work. The significance of road and bridge construction machinery and equipment management and maintenance is to ensure the normal operation of the equipment, continuously introduce new technologies, improve the service performance of the equipment, ensure the stable production of the equipment, help enterprises save costs and ensure the safe production of enterprises.
文摘Bridge plays an important role in highway engineering. Among them, the pile foundation is the foundation structure of the bridge, which is not conducive to the smooth progress of the construction in case of special geological conditions such as karst caves. If there is no effective treatment measures, it is easy to have problems such as drilling loss, hammer sticking and hole collapse, which seriously threaten the stability of the pile foundation and even the whole bridge. In order to ensure that the bored piles meet the requirements of the quality standards, the construction procedures of pile position measurement, casing embedding, mud preparation, drilling, hole cleaning and concrete pouring should be done well, so that the bridge foundation can be completed according to the quality, quantity and time.
文摘At present, the application scope of road and bridge engineering construction technology in our country is gradually expanding, but the construction technology adopted by most construction teams in our country is not advanced enough, which causes great damage to the environment and even wastes resources. The new technology has brought great impact to the bridge construction technology, and has a direct impact on the sustainable development of the construction industry. Therefore, it is necessary to integrate the green development mode into the actual engineering construction, so as to extend the service life of the road and bridge. In view of this, this paper first briefly analyzes the concept of green construction and the significance of highway green construction, and then discusses in detail the main types of pollution existing in the process of highway construction and highway construction technology under the environment of green construction.
文摘With the rapid updating of science and technology, many new energy-saving materials and new technologies have emerged in the bridge construction, which has brought great impact on the bridge construction technology and has a direct impact on the sustainable development of the construction industry. Therefore, it is necessary to integrate the green development mode into the actual engineering construction, so as to extend the service life of roads and bridges. With the increasingly serious environmental problems, the problems exposed in the actual construction process of roads and bridges are also gradually increasing. Based on this, this paper analyzes the application of green construction technology in road and bridge construction.
文摘In recent years, the traffic pressure is increasing. It is of great practical significance to effectively relieve the traffic pressure, improve the transportation efficiency and speed up the road and bridge construction. In the concrete implementation process, not only technical support, but also safety management should be done well, because this is not only related to the quality of roads and bridges, but also closely related to the traffic safety of pedestrians and vehicles. Therefore, based on the problem, this paper puts forward some suggestions for follow-up reference.
文摘Road and bridge are one of the most important parts of social infrastructure, one of the most important conditions of economy and transportation, and the guarantee of people's basic life. However, there are many problems and shortcomings in road and bridge maintenance in our country, which have a serious impact on the overall quality of road and bridge projects and have greatly damaged the economic traffic and people's traffic. On this basis, a simple understanding of highway and bridge maintenance technology and solutions, and enhance the effectiveness of highway and bridge maintenance, to maintain highway and bridge safety.
文摘With the development and progress of science and technology,road and bridge design has experienced rapid development,from the initial manual drawing design to the popularity of Computer-Aided Design(CAD),and then to today’s digital software design era.Early designers relied on hand-drawn paper design forms which was time-consuming and error-prone.Digital support for road and bridge design not only saves the design time but the design quality has also achieved a qualitative leap.This paper engages in the application of digital technology in road and bridge design,to provide technical reference for China’s road and bridge engineering design units,to promote the popularity of Civil3D and other advanced design software in the field of engineering design and development,ultimately contributing to the sustainable development of China’s road and bridge engineering.
文摘Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, the prestressed construction technology can greatly improve the engineering quality of road and bridge engineering, and it has the advantages of easy operation and low cost. Therefore, the use frequency of prestressed construction technology in road and bridge engineering is very high, but also can shorten the project period, improve the seismic capacity and carrying capacity of the bridge structure, actively promote the development of prestressed construction technology, can greatly improve the construction quality of bridge engineering. This paper starts from the prestress technology as the starting point, expounds the relevant concepts and the current situation, and then explains the specific application of the technology in the road and bridge construction, and finally summarizes the technical points that need to be paid attention to in the construction process. The aim is to deeply understand the prestressed construction technology of road and bridge construction, and to contribute to the construction of road and bridge construction in China.
文摘Municipal road and bridge engineering has the characteristics of large scale and complex technology, which requires more advanced construction technology in the construction process. Among them, prestressed construction technology can greatly improve the engineering quality of road and bridge engineering, and has the advantages of easy operation and low cost. Precast box girder has been widely used in road and bridge engineering. The common spans are 25m, 30m, 40m and so on. As a simply supported beam structure, the larger the span, the greater the bending moment in the beam under vehicle load. In the construction of roads and bridges, it is necessary to promote the application of prestressed construction technology, carry out construction operations in strict accordance with the key points of prestressed construction technology, improve the construction efficiency and construction quality of road and bridge projects, prolong the service life of road and bridge projects, and provide a strong guarantee for people's travel safety.
文摘At present, in the construction process, we must attach great importance to the problem of soft soil foundation, strengthen the site investigation of hydrogeology and soil in the construction area, and reasonably select the treatment method of soft soil foundation, so that its strength and foundation bearing capacity meet the design standards and construction requirements, thus improving the overall construction quality of subgrade engineering and providing reliable guarantee for traffic safety. At the same time, construction units, design units and scientific research institutions should cooperate closely to make the new technology more mature and widely applicable.
文摘Highway transportation occupies a very important position in the field of transportation in our country, especially with the continuous progress of the national economy, the load on the highway has also become larger, and the requirements for it have gradually increased. Our country attaches great importance to road transportation, and every year it will invest a lot of manpower, material resources and financial resources to carry out the construction of road bridges in order to meet the ever-increasing traffic requirements. In specific use, due to the long-term overload work and the difficulty in keeping up with the losses caused by road and bridge maintenance, a large number of roads and bridges that do not meet the design service life are now facing the problems of aging road surfaces and outdated equipment, which lead to poor driving experience, leading to major traffic safety accidents. This is undoubtedly not a huge obstacle to the increasing traffic demand of the society. Therefore, in order to avoid such incidents, the state should pay attention to the maintenance and management of roads and bridges.
文摘As an important part of highway construction, highway and bridge engineering plays an important role in the development of traffic construction in China. Its construction management level has a decisive influence on the quality of highway and bridge engineering. Therefore, in the process of the construction of a highway bridge, management must realize the importance of construction management, the construction quality in the first place, establish the correct concept of construction management, fully grasp the construction cost management, the construction of a comprehensive management system, and strictly control the construction quality based on the quality of highway bridge engineering in our country as the research key. The problems existing in the construction management of highway and bridge engineering are deeply analyzed and discussed. On this basis, the concrete measures to solve these problems are put forward in order to promote the healthy and stable development of the country's road industry.
文摘At present, some achievements have been made in the research of subgrade settlement in China, and the main research achievements are the optimization schemes for the problems such as bumping at bridge head during the use of roads and bridges. For the construction of subgrade in transition section, the construction process and materials used can have a certain impact on the quality and safety performance of road and bridge. The harm brought by uneven subgrade is mainly that it is easy to form icing and water accumulation in rainy and snowy weather, which leads to out-of-control of vehicles and affects the driving safety of vehicles. Therefore, in order to improve and optimize the above problems, in the construction process, it is necessary to eliminate the factors that lead to uneven settlement of subgrade in a variety of ways to improve the safety and economic value of roads and bridges.
