明挖法地铁车站地基反力分析  

Analysis of ground reaction forces on open-cut subway station

作　　者：胡纯 李大庆[2] 

机构地区：[1]中国市政工程中南设计研究总院有限公司,湖北武汉430010 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2013年第2期208-211,共4页Engineering Journal of Wuhan University

摘　　要：目前地铁主体结构较普遍地按弹性地基上的框架模型进行设计,计算结果与实际情况存在差异.结合地铁车站施工过程中地基土质变化及主体结构刚度的变化对主体结构内力及基础底板反力分布产生的影响,利用考虑土体非线性情况下的有限元分析结果,按照合力相等、分布形状近似的原则简化底板反力,从而使主体结构计算内力更接近于实际内力分布.In current time, the main structures of subways usually are designed as framework model on elastic foundation, the calculated results reflected the actual situation not well. Compared with the process of construction in the main structure of a subway station, the authors pay attention to the influence of the internal forces of main structure and ground reaction force when the foundation soil and structural stiffness change, using finite element analysis in the case of considering nonlinearity of the soil, and simplify the ground reaction force in accordance with the principle of force unchanged and approximate shape similarly, so that the calculation of internal force of main structure is close to the actual situation.

关 键 词：地铁 明挖法 施工过程 结构刚度 

分 类 号：U231[交通运输工程—道路与铁道工程]