预制拼装式明挖隧道接头受力特性研究  

Study on Mechanical Characteristics of Prefabricated Open Cut Tunnel Joint

作　　者：贺腾飞 包鹤立 王文渊 HE Teng-fei;BAO He-li;WANG Wen-yuan(Shanghai Urban Construction Design&Research InstituteCo.,Ltd.,Shanghai 200125,China)

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125

出　　处：《中国市政工程》2024年第6期116-120,166,167,共7页China Municipal Engineering

基　　金：上海市科学技术委员会项目:工业化建造明挖隧道设计关键技术研究(17DZ1203402);上海工业化装配化市政工程技术研究中心(17DZ2251900)。

摘　　要：依托上海市武宁路快速化改建项目预制拼装试验段工程,文章对预制拼装式明挖隧道接头抗弯刚度计算方法进行讨论,在此基础上,对错缝拼装条件下的接头弯矩传递进行研究,为类似预制拼装式明挖隧道工程的接头设计及计算提供参考。研究结果表明:相较于刚接,纵缝接头按铰接计算会引起顶板、底板与侧墙连接位置的内力计算结果减小,其余位置增大;通缝拼装与错缝拼装造成的除接头位置以外的结构内力变化较小,最大变化幅度小于8%;错缝拼装会引起纵缝接头位置的内力减少,邻接环对应接头位置的内力增加。Based on the prefabricated assembly test section project of the Wuning Road Rapid Reconstruction Project in Shanghai,this article discusses the calculation method of the bending stiffness of prefabricated and assembled open cut tunnel joints.On this basis,the bending moment transmission of joints under staggered assembly conditions is studied,providing reference for the design and calculation of joints in similar prefabricated and assembled open cut tunnel projects.The research results indicate that compared to rigid joints,calculating longitudinal seam joints based on hinged joints will cause a decrease in the internal force calculation results at the connection positions between the top plate,bottom plate,and side walls,while increasing at other positions.The internal force changes of the structure caused by through seam assembly and staggered seam assembly,except for the joint position,are relatively small,with a maximum change amplitude of less than 8%.Misalignment assembly can cause a decrease in internal forces at the longitudinal joint position and an increase in internal forces at the corresponding joint position of the adjacent ring.

关 键 词：预制拼装 明挖隧道 接头设计 接头刚度 接头弯矩 

分 类 号：U452[建筑科学—桥梁与隧道工程]