立交桥上跨地铁车站结构抗震性能研究

发布时间：2018-07-02 12:43

本文选题：时程分析 + 立交桥　；参考：《铁道工程学报》2017年01期

【摘要】：研究目的:地下大空间构筑物的开发利用成为近年来城市化进程的热点,相关的抗震规范也在近几年陆续出台,但抗震设计的理论和实践水平与地面结构相比还有差距,存在与地下结构建设水平相脱节的情况。本文对上部拟建立交桥的地铁车站工程进行基于时程分析法的抗震性能研究,对描述2种不同站桥相互关系的设计方案进行数值分析并得出结论,期望对地下结构抗震设计的认识与方法的完善提供有益思路。研究结论:(1)各工况下的车站顶板-底板层间位移角均满足相关规范中对结构弹性层间位移角限值的要求;(2)站桥分离方案在满足变形和承载力要求的前提下,更好地节省了工程造价和劳动力成本;(3)采用时程分析法对地下结构进行计算,宜将计算结果与其他抗震分析方法的对应结果进行比对并进行过程修正,对计算结果的评价应以结构的抗震性能及薄弱部位的定性分析为主,并作为结构设计的参考依据;(4)本研究成果对地下工程的抗震分析与结构设计具有参考和借鉴价值。
[Abstract]:Research objective: the development and utilization of underground large space structures has become a hot spot in the process of urbanization in recent years, and the relevant seismic codes have been issued in recent years. However, the theoretical and practical level of seismic design is still far from that of ground structures. There is a disconnection with the level of underground structure construction. In this paper, the seismic performance of the subway station project of the upper overpass is studied based on time-history analysis, and the numerical analysis of the design scheme describing the relationship between two different stations and bridges is carried out and the conclusion is drawn. It is expected to provide useful ideas for the understanding of seismic design of underground structures and the perfection of methods. The research conclusions are as follows: (1) the displacement angle between the roof and the floor of the station under each working condition meets the limit value of the elastic layer displacement angle of the structure in the relevant codes; (2) the separation scheme of the station and bridge meets the requirements of deformation and bearing capacity. The engineering cost and labor cost are saved better. (3) the time history analysis method is used to calculate the underground structure, so it is appropriate to compare the calculation results with the corresponding results of other seismic analysis methods and to correct the process. The evaluation of the calculation results should be based on the qualitative analysis of the seismic performance of the structure and the weak part, and be used as the reference basis for the structural design. (4) the results of this study have reference and reference value for the seismic analysis and structural design of underground engineering.
【作者单位】：北京交通大学;
【基金】：国家重点基础研究发展计划(2013CB036203) 中央高校基本科研业务费专项资金(2013JBM011)
【分类号】：TU352.11;TU93

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