交通中心下方合建地铁车站主体受力特点分析

近年来,越来越多的地铁车站选择与城市交通枢纽建筑合建,以期节省投资和缩短工期。以我国西北某市一座与机场交通中心合建的地铁车站为研究对象,对其主体结构受力特点进行研究,以期为实际工程设计提供依据。交通中心通过转换梁和隔震支座,将上部结构荷载以点荷载的形式作用在车站框架柱和侧墙上,荷载数值差别大,因而选择Midas Gen进行车站整体三维建模,分析得到结构构件的内力和变形情况。通过分析结果可知,该车站内力除数值较常规标准车站偏大外,分布形式也有其鲜明特点;变形方面,因受力差异,车站两侧存在差异沉降,但满足规范要求。通过本文的分析,可以看出该地铁车站整体可视为上部结构的条形基础。

Analysis on the Stress Characteristics of the Main Body of the Subway Station Joint Building under Traffic Center

In recent years,more and more subway stations have been constructed jointly with urban transport hub buildings in order to save investment and shorten construction period. This article chooses a subway station joint building under an airport transportation center in a city in northwest of China as the research object to study themechanical characteristics of the body structure and provide the basis for practical engineering design.The upper structure load of the transportation center is acted on the station frame column and side wall in the form of point load through the transfer beam and the bearing of seismic isolation. Due to its big load numerical difference,the Midas Gen is selected to establish 3 D model of the overall station and analyze internal force and deformation of structural elements. According to the analysis results,the internal force of the station is larger than that of the conventional standard station with unique distribution form. In terms of deformation,there exists differential settlement on both sides of the station due to difference in stress,but it meets the standard requirements. Through the analysis of this paper,it can be seen that the whole subway station can be regarded as the strip foundation of the superstructure.