Jiangyin Yangtze highway bridge is a suspension bridge with main span 1 385 m. The south tower pier is located on a 70 m bedrock slope with bedding plane of strata tipping to the river channel and several weak interca...Jiangyin Yangtze highway bridge is a suspension bridge with main span 1 385 m. The south tower pier is located on a 70 m bedrock slope with bedding plane of strata tipping to the river channel and several weak intercalated layers. The stability of the tower pier is one of the main engineering geologic problems. On the basis of investigation and survey of relevant geologic condition analyses, the geomechanical model experiments are carried out for stability study of various foundation alternatives’ advantages and disadvantages. Pile foundation has been finally adopted and constructed, and this is justified by practice.展开更多
In the past decade, the construction speed of high-rise office towers worldwide hasexhibited explosive growth. The unique morphological characteristics of high-rise office towersresult in higher shape factors and rela...In the past decade, the construction speed of high-rise office towers worldwide hasexhibited explosive growth. The unique morphological characteristics of high-rise office towersresult in higher shape factors and relatively larger thermal loads. The traditional workflow of“design-evaluation” in the early stages of design imposes constraints on the diversity of towermorphology, the timeliness of performance evaluation, and the efficient integration of systems. Therefore, targeting the geometric characteristics of high-rise office towers, a systematically developed and universally applicable design grammar, named “Vertex-Based PolygonalGenerative Grammar (VPGG)” is proposed. Additionally, a corresponding early-stage performance driven High-rise Office Tower Generative Design Framework (HOT_GDF) is introduced.Case study results demonstrate that, with the support of Artificial Neural Network, utilizingthis system can not only globally explore the diversity of tower morphologies but also efficiently uncover greater energy-saving potential in complex architectural forms compared tosimpler cubic forms, with an improvement of up to 7.76% during the early stages of design. Designed from the perspective of architects, the framework achieves logical, refined, and visualreal-time interaction between computers and human minds during the early stages of towerdesign. This enhances design efficiency and facilitates design decision-making. It systematically integrates considerations for environmental performance, such as thermal load and thermal comfort, into the design process. Furthermore, it couples various aspects of morphologicaldesign with corresponding building performance, helping users in making design decisions froma rational and quantifiable perspective. This captures greater design potential, encompassingboth form and performance, for high-rise office towers during the initial design phase.展开更多
Equipping steel tower atop building structural system at the top of high-rise buildings is applied increasingly. However, the earthquake disasters indicate that under seismic effect, the tower on the roof reacts stron...Equipping steel tower atop building structural system at the top of high-rise buildings is applied increasingly. However, the earthquake disasters indicate that under seismic effect, the tower on the roof reacts strongly to the earthquake, and the gazebo is damaged greatly under the condition that major structure has no earthquake damage. Based on analyzing the characteristics and application methods of ETABS software, for engineering projects, the paper uses ETABS software and simplified calculation method to calculate and make comparison analysis on steel tower atop building structure. The analysis results indicate that the method established in the paper has higher accuracy, which can meet the engineering requirements.展开更多
This paper presents the first of a series of studies on the seismic design of high-rise towers for cablestayed bridges under strong earthquakes.One practical cable-stayed bridge with a 730 m long main span and two hig...This paper presents the first of a series of studies on the seismic design of high-rise towers for cablestayed bridges under strong earthquakes.One practical cable-stayed bridge with a 730 m long main span and two high-rise towers over 200 m in height was selected for this study.The preliminary results show that compared with piers,the tower is more vulnerable to pulse-like earthquakes,and it may develop plasticity at certain locations.In addition,viscous dampers may not have the same effect during pulse-like earthquakes as they do under site-specific earthquakes.Hence,reoptimization of damper parameters or reconsideration of other energy dissipation devices will be needed if strong earthquakes are likely to occur.展开更多
文摘Jiangyin Yangtze highway bridge is a suspension bridge with main span 1 385 m. The south tower pier is located on a 70 m bedrock slope with bedding plane of strata tipping to the river channel and several weak intercalated layers. The stability of the tower pier is one of the main engineering geologic problems. On the basis of investigation and survey of relevant geologic condition analyses, the geomechanical model experiments are carried out for stability study of various foundation alternatives’ advantages and disadvantages. Pile foundation has been finally adopted and constructed, and this is justified by practice.
基金supported by the National Natural Science Foundation of China(Grant Nos.51878436,51708397).
文摘In the past decade, the construction speed of high-rise office towers worldwide hasexhibited explosive growth. The unique morphological characteristics of high-rise office towersresult in higher shape factors and relatively larger thermal loads. The traditional workflow of“design-evaluation” in the early stages of design imposes constraints on the diversity of towermorphology, the timeliness of performance evaluation, and the efficient integration of systems. Therefore, targeting the geometric characteristics of high-rise office towers, a systematically developed and universally applicable design grammar, named “Vertex-Based PolygonalGenerative Grammar (VPGG)” is proposed. Additionally, a corresponding early-stage performance driven High-rise Office Tower Generative Design Framework (HOT_GDF) is introduced.Case study results demonstrate that, with the support of Artificial Neural Network, utilizingthis system can not only globally explore the diversity of tower morphologies but also efficiently uncover greater energy-saving potential in complex architectural forms compared tosimpler cubic forms, with an improvement of up to 7.76% during the early stages of design. Designed from the perspective of architects, the framework achieves logical, refined, and visualreal-time interaction between computers and human minds during the early stages of towerdesign. This enhances design efficiency and facilitates design decision-making. It systematically integrates considerations for environmental performance, such as thermal load and thermal comfort, into the design process. Furthermore, it couples various aspects of morphologicaldesign with corresponding building performance, helping users in making design decisions froma rational and quantifiable perspective. This captures greater design potential, encompassingboth form and performance, for high-rise office towers during the initial design phase.
文摘Equipping steel tower atop building structural system at the top of high-rise buildings is applied increasingly. However, the earthquake disasters indicate that under seismic effect, the tower on the roof reacts strongly to the earthquake, and the gazebo is damaged greatly under the condition that major structure has no earthquake damage. Based on analyzing the characteristics and application methods of ETABS software, for engineering projects, the paper uses ETABS software and simplified calculation method to calculate and make comparison analysis on steel tower atop building structure. The analysis results indicate that the method established in the paper has higher accuracy, which can meet the engineering requirements.
基金This research is supported by the National Science Foundation of China(Grant No.51008225)by the Scientific Research Foundation for the Returned Overseas Chinese Scholars of the State Education Ministry in China.
文摘This paper presents the first of a series of studies on the seismic design of high-rise towers for cablestayed bridges under strong earthquakes.One practical cable-stayed bridge with a 730 m long main span and two high-rise towers over 200 m in height was selected for this study.The preliminary results show that compared with piers,the tower is more vulnerable to pulse-like earthquakes,and it may develop plasticity at certain locations.In addition,viscous dampers may not have the same effect during pulse-like earthquakes as they do under site-specific earthquakes.Hence,reoptimization of damper parameters or reconsideration of other energy dissipation devices will be needed if strong earthquakes are likely to occur.
