The number of urban underground road tunnels in China is increasing year by year,and health monitoring of tunnels is an effective management method to ensure their structural integrity.However,for shorter underground ...The number of urban underground road tunnels in China is increasing year by year,and health monitoring of tunnels is an effective management method to ensure their structural integrity.However,for shorter underground road tunnel projects,insufficient investment often leads to less frequent application of health monitoring systems.The application of intelligent structural health monitoring means can not only reduce the project cost but also help workers fully understand the actual situation of the tunnel structure.Therefore,this paper analyzes the characteristics,problems,and design of the urban underground road tunnel structural health monitoring system,and discusses the implementation of the urban underground road tunnel structural health monitoring system.展开更多
With the increasing number of urban underground construction projects,the evaluation of the influence of tunnel expansion on building foundation is one of the important factors to be considered in the project.In this ...With the increasing number of urban underground construction projects,the evaluation of the influence of tunnel expansion on building foundation is one of the important factors to be considered in the project.In this paper,the deformation of the upper structure and the deformation pattern of the upper structure were analyzed,and the two-dimensional finite element model was built based on the case of Chongqing Jiefangbei Underground Ring Road Expansion Project Scheme.Comparative analysis of the deformation and changes in stress of the two tunnel expansion construction schemes of full-frame support and bolt suspension was performed,and the safety,rationality and feasibility of the bolt suspension scheme was confirmed through project safety analysis.It is hoped that this paper will serve as a reference for similar projects in the safety control technology of tunnel construction process.展开更多
文摘The number of urban underground road tunnels in China is increasing year by year,and health monitoring of tunnels is an effective management method to ensure their structural integrity.However,for shorter underground road tunnel projects,insufficient investment often leads to less frequent application of health monitoring systems.The application of intelligent structural health monitoring means can not only reduce the project cost but also help workers fully understand the actual situation of the tunnel structure.Therefore,this paper analyzes the characteristics,problems,and design of the urban underground road tunnel structural health monitoring system,and discusses the implementation of the urban underground road tunnel structural health monitoring system.
文摘With the increasing number of urban underground construction projects,the evaluation of the influence of tunnel expansion on building foundation is one of the important factors to be considered in the project.In this paper,the deformation of the upper structure and the deformation pattern of the upper structure were analyzed,and the two-dimensional finite element model was built based on the case of Chongqing Jiefangbei Underground Ring Road Expansion Project Scheme.Comparative analysis of the deformation and changes in stress of the two tunnel expansion construction schemes of full-frame support and bolt suspension was performed,and the safety,rationality and feasibility of the bolt suspension scheme was confirmed through project safety analysis.It is hoped that this paper will serve as a reference for similar projects in the safety control technology of tunnel construction process.
