节点刚域对地铁车站结构设计的影响  

Influence of Rigid Zone on the Design of Subway Station Structure

作　　者：陈建琴 CHEN Jianqin(Shanghai Tunnel Engineering&Rail Transit Design and Research Institute Shanghai 200235,China)

机构地区：[1]上海市隧道工程轨道交通设计研究院,上海200235

出　　处：《广东土木与建筑》2021年第9期34-36,80,共4页Guangdong Architecture Civil Engineering

摘　　要：为研究框架节点刚域对地铁车站结构设计的影响,以上海某地铁车站为工程背景,进行了刚域对计算结果的敏感性分析,结果表明:①通过将刚域计算长度内单元的抗弯刚度乘以一个足够大的放大系数来考虑节点刚域的影响时,当放大系数取值≥1e5时,计算结果稳定。②板端处的弯矩绝对值与是否考虑刚域计算有关,考虑刚域计算时的弯矩绝对值大于不考虑刚域计算时的弯矩绝对值,弯矩可增大0.36%~38.50%。③考虑刚域计算时刚域边的弯矩值大于不考虑刚域计算内衬墙边的弯矩,弯矩差值为21.40%。The influence of rigid zone on the structural design of subway station is studied.In this paper,a Shanghai subway station was taken as the engineering background,and the sensitivity analysis of rigid zone of frame joints to the calculation result was carried out.The results were as follows:①The bending stiffness of the element within the calculated length of the stiffness domain is multiplied by a large enough amplification factor to consider the influence of the rigid zone.And the calculated result is stable when the amplification factor is greater than or equal to 1e5.②The bending moment at the end of the plate is related to whether the calculation of the rigid zone is con‐sidered.The absolute value of the bending moment with the rigid region considered is greater than that without the calculation of the rigid region.The absolute value of the bending moment can be increased by 0.36%~38.50%.③The bending moment value at the edge of the rigid domain considering the rigid region is greater than that of the bending moment value at the edge of the lining wall without considering the rigid region,and the difference is 21.40%.

关 键 词：刚域 地下结构 梁柱节点 有限元分析 

分 类 号：TU921[建筑科学—建筑设计及理论]