矩形钢顶管承插接头局部抗弯承载力计算  

Calculation of Local Bending Capacity of Rectangular Steel Pipe Jacking Socket Joint

作　　者：张一鸣[1] 朱科峰[2] 黄小平[2] 黄爱军 刘朝明[2] 袁勇[1,4] ZHANG Yiming;ZHU Kefeng;HUANG Xiaoping;HUANG Aijun;LIU Zhaoming;YUAN Yong(Department of Underground Architecture&Engineering,Tongji University,Shanghai 200092,China;_Shanghai Shentong Metro Group Co.,Ltd.,Shanghai 201103,China;Shanghai Urban Construction Design&Research Institute,Shanghai 200125,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]上海申通地铁集团有限公司,上海201103 [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11期2422-2427,共6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：以顶管隧道广泛采用的钢顶管F形承插式接头为研究对象,通过一定的简化假设,建立接头抗弯承载能力的计算模型,推导出接头极限弯矩和转角刚度的计算公式,并与接头试验结果进行对比验证。研究表明,接头在正弯矩作用下的弯矩-转角关系呈现出由线性向非线性发展的特征,连接螺栓对于接头的抗弯承载能力起控制作用,增加连接螺栓的强度和横截面积可以显著提升接头的极限承载弯矩和转动刚度。研究结果可为钢顶管承插接头设计参数的优化提供参考。Taking the F-shaped socket joint of steel pipe jacking widely used in pipe jacking tunnel as the research object,through certain simplified assumptions,the calculation model of bending bearing capacity of the joint is established,and the calculation formulas of ultimate bending moment and corner stiffness of the joint are derived,which are compared with the joint test results.The research shows that the moment rotation relationship of the joint under positive bending moment shows the characteristics of developing from linearity to nonlinearity.The connecting bolt plays a controlling role in the bending capacity of the joint.Increasing the strength and cross-sectional area of the connecting bolt can significantly improve the ultimate bearing moment and rotational stiffness of the joint.The research results can provide reference for the optimization of design parameters of steel pipe jacking socket joint.

关 键 词：顶管隧道 F形承插口 计算模型 极限弯矩 转角刚度 

分 类 号：TU511[建筑科学—建筑技术科学]