某地铁上盖超限项目结构设计分析

Structural design analysis of a subway superstructure overrun project

随着我国城市化建设速度的不断加快,城市中心的土地资源越来越稀缺。在交通便利、环境宜居的语境下,如拥有地铁站零距离的独特属性,将住宅电梯、地下商场与地铁站直接互通,上盖项目更是因便利性受到人们的追捧。而梁式转换结构作为地铁上盖项目常用的结构形式,近年也得到广泛的应用。应用MIDAS、YJK和SAUSAGE软件,对结构分别进行小震、中震、大震作用下的性能分析,验算结构是否满足不同地震作用下各抗震性能水准的要求;应用ABAQUS软件,进行转换梁的应力分析。分析结果表明,工程结构体系合理,可满足预期的抗震性能目标要求。

With the increase of urbanization rate in our country,the land resources in urban center are becoming more and more scarce.Under the guidance of the development concept of convenient transportation and livable environment,the subway-covered project directly interconnects residential elevators,underground shopping malls and subway stations,which is highly sought after for its unique attribute of zero distance from the subway station.As a common structure of subway-covered projects,the beam-type conversion structure has been widely used in recent years.In this paper,MIDAS,YJK and SAUSAGE were used to analyze the performance of the structure under small,medium and large earthquakes,and to check whether the structure can meet the seismic requirements of different levels.The stress analysis of the structure was carried out by ABAQUS.The results show that the structural force is reasonable and can meet the expected seismic requirements.