矩形钢顶管F形承插口接头局部抗弯承载性能试验  

Test on Local Bending Capacity of F-type Socket Joint of Rectangular Steel Pipe Jacking

作　　者：吉茂杰[1] 张一鸣[2] 吴东鹏[1] 黄小平[1] 黄爱军 袁勇[2,4] JI Maojie;ZHANG Yiming;WU Dongpeng;HUANG Xiaoping;HUANG Aijun;YUAN Yong(Shanghai Shentong Metro Group Co.,Ltd.,Shanghai 201103,China;Department of Underground Architecture&Engineering,Tongji University,Shanghai 200092,China;Shanghai Urban Construction Design&Research Institute(Group)Co.,Ltd.,Shanghai 200125,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]上海申通地铁集团有限公司,上海201103 [2]同济大学地下建筑与工程系,上海200092 [3]上海城市建设设计研究总院(集团)有限公司,上海200125 [4]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《建筑施工》2021年第10期2189-2192,共4页Building Construction

基　　金：上海市住房和城乡建设管理委员会课题(JS-KY17R031-10,JS-KY15R007)。

摘　　要：为研究矩形钢顶管F形承插口管片接头力学性能及转角刚度,以管环承插接口局部管片接头试件为研究对象,开展荷载试验和数值模拟,研究该接头试件在正弯矩作用下承载能力与接头转角刚度的变化规律。研究表明,局部管片接头试件在正弯矩的作用下呈现出弹性、屈服、破坏等3个阶段,接头的受压区高度及转角刚度逐渐降低。结合试验和数值模拟分析弯矩作用下接头结构各部件的受力,可供F形承插口接头设计参考。To study the mechanical properties and corner stiffness of segment joint of F-type socket of rectangular steel pipe jacking,taking the local segment joint specimen of pipe ring socket interface as the research object,load test and numerical simulation are carried out to study the variation law of bearing capacity and corner stiffness of the joint specimen under positive bending moment.The results show that the local segment joint specimens show three stages of elasticity,yield and failure under the action of positive bending moment,and the height of compression zone and corner stiffness of the joint gradually decrease.Combined with test and numerical simulation,the stress of each component of joint structure under bending moment is analyzed,which can be used as a reference for the design of F-type socket joint.

关 键 词：顶管隧道 F形承插口 荷载试验 极限弯矩 转角刚度 

分 类 号：TU753.7[建筑科学—建筑技术科学]