摘要
为对比优选不同厚度垫层城市浅埋矩形隧道的抗震效果,本文采用数值模拟软件ABAQUS,以某城市浅埋矩形隧道为研究背景,对隧道衬砌结构的变形、相关内力及结构安全系数进行分析.施设垫层后隧道衬砌结构的变形有所减小,最大、最小主应力值增加,衬砌结构的最小安全系数有所提升.综合各方面计算分析,施设20cm垫层后的抗震效果优于30cm垫层.
In order to compare and optimize the anti-seismic effects with cushion of different thickness to be used in shallow-buried rectangular tunnels,this paper uses ABAQUS,a numerical simulation software to analyze the deformation of the tunnel lining structure,related internal forces and structural safety factors.After the cushion is installed,the deformation of the tunnel lining structure is reduced;the maximum and minimum principal stress values are increased,and the minimum safety factor of the lining structure is improved.The finding,based on the previous calculation and analysis,is that the anti-seismic effects with the cushion of 20 cm thickness is better than that of 30 cm thickness.The conclusion of this study can provide reference for seismic design of city tunnels.
作者
安栋
陈征
张建军
肖剑
AN Dong;CHEN Zheng;ZHANG Jianjun;XIAO Jian(School of Civil Engineering,North China Univ.of Tech.,100144,Beijing,China;North China Municipal Engineering Design&Research Institute Co.,Ltd.,300051,Tianjin,China;MCC Communication Construction Group Co.,Ltd.,100011,Beijing,China)
出处
《北方工业大学学报》
2020年第5期118-123,共6页
Journal of North China University of Technology
基金
国家自然科学基金青年项目“强震区跨热断层隧道破坏机理及控制技术”(51408008)
中冶交通建设集团科技计划项目“芒市隧道抗震减灾关键技术研究”(2017-SZ03)
北方工业大学毓优人才支持计划项目(20XN199/001).
关键词
城市浅埋隧道
垫层
安全系数
抗震效果
urban shallow buried tunnel
cushion
safety factor
seismic effects
