地层环境变化对地铁车站结构内力的影响研究  

Influence of Elastic Resistance Coefficient and Static Earth Pressure Coefficient on Internal Force of Subway Station Structure

作　　者：黎钜宏 Li Juhong(Guangdong Zhonggong Architectural Design Institute Co., Ltd. Guangzhou 510670,China)

机构地区：[1]广东省重工建筑设计院有限公司,广州510670

出　　处：《广东土木与建筑》2018年第2期18-21,共4页Guangdong Architecture Civil Engineering

摘　　要：现行地铁车站的结构设计中,地层环境变化如何影响车站结构的内力还需要更进一步分析研究。以某地铁车站为例,建立结构空间有限元模型。通过不同的岩土弹性抗力系数和静止土压力系数来探讨地铁车站结构内力的分布影响规律。由此得出结论:随着岩土的弹性抗力系数增大,车站顶板和中板的横向最大负弯矩均增大,底板横向最大正弯矩减少,侧墙横向最大正弯矩增大和横向最大负弯矩减少,底板纵梁最大弯矩减少,柱子最大轴力减少;随着岩土的静止土压力系数增大,顶板、中板和底板横向最大正弯矩减少和横向最大负弯矩增大,侧墙横向最大弯矩增大。For purpose of current situation that in current subway station structural design,the rock and soil environment variation influences internal force of the station structure and such influence principle calls for further investigation. By taking one real subway station for example,finite element model was built to simulate the station space by use of ANYSYS 13.0. By adjusting the elastic resistance coefficient and static earth pressure coefficient,the structural internal force distribution law of subway station was explored. Following conclusions are drawn as follows：with the increase of elastic resistance coefficient,the transverse maximum negative bending moment of the top and medium slab increases is while the transverse maximum positive bending moment of side walls increases and the transverse maximum positive bending moment of the bottom slab and the transverse maximum negative bending moment of side walls and the maximum bending moment of longitudinal beams of the bottom slab and the maximum axial force of columns decreases. With the increase of static earth pressure coefficient,the transverse maximum positive bending moment of all slabs decreases is while the transverse maximum negative bending moment of all slabs and the transverse maximum bending moment of side walls increases.

关 键 词：空间分析 结构内力 弹性抗力系数 静止土压力系数 变化规律 

分 类 号：U231.4[交通运输工程—道路与铁道工程]