摘要
以武汉市雄楚大街华中师范大学地下通道工程为例,建立了地下通道施工过程的三维数值模型,对比分析了CRD法和改进CRD法在控制地表沉降以及衬砌结构内力2个方面的优劣。分析结果表明:改进CRD法相较于CRD法能更加有效地控制地表沉降,减弱地表沉降对既有公路及管线的影响;同时采用改进CRD法施工可优化衬砌结构内力,减小衬砌结构的长期荷载。故改进CRD法更适用于武汉三级阶地地下通道的施工。
Taking the Central China Normal University underpass project of Xiongchu Street in Wuhan as the background,a three-dimensional numerical model of the underpass construction process was established,the pros and cons of center cross diagram(CRD)method and improved center cross diagram(ICRD)method in controlling ground surface settlement and internal force of lining structure were compared and analyzed.The analysis results show that the improved CRD method is better in controlling ground surface settlement than CRD method,which could reduce the inf luence of ground surface settlement on existing roads and pipelines,and the improved CRD method can optimize the lining internal force and reduce the long-term load of lining structure.So,the improved CRD method is more suitable for the construction of the three grade terrace underpass construction in Wuhan.
作者
高波
钱叶存
朱小建
董文宝
GAO Bo;QIAN Yecun;ZHU Xiaojian;DONG Wenbao(The First Construction Engineering Company Limited of China Construction Third Engineering Bereau,Wuhan Hubei 430000,China)
出处
《铁道建筑》
北大核心
2018年第7期76-79,共4页
Railway Engineering
关键词
公路隧道
改进CRD法
数值模拟
过街通道
地表沉降
结构内力
Highway tunnel
Improved CRD method
Numerical simulation
Underpass
Ground surface settlement
Structural internal force
作者简介
第一作者:高波(1976—),男,高级工程师。E-mail:gaobo729@163.com。
