摘要
站桥合一的广州新客站将成为我国重要的交通枢纽,其特点为铁路桥梁与站房建筑"合一",结构体系复杂。研究了广州新客站的动力特性,在自振特性分析的基础上,分别采用反应谱法和时程法研究了结构在小震、中震下的弹性响应,结果表明铁路桥梁刚度较大,可以作为上部结构的嵌固层;中震下各个构件满足"中震不屈服"的抗震性能目标要求。进行了大震下结构的弹塑性时程分析,结果表明结构最大层间位移角满足1/50的限值条件。对结构在地震作用下的多塔效应和拉索内力变化情况进行了研究,结果表明结构具有可靠的抗震性能。
New Guangzhou Railway Station,which will be an important traffic center in China,is characterized by the complicated combination of railway bridge and station building.After having studied the dynamic feature of the station and the free vibration attribute,the structure response is stimulated by frequent and moderate earthquake according to response spectrum analysis and time-history analysis method.The result shows that the rigidity of railway bridge is hard enough as the fixed floor of the upper structure.The moderate earthquake analytical results indicate that all the frame members meet the aseismic performance index specified in the study. By conducting the time-history analysis in rare earthquake,it is proved that the maximal interlaminar displacement angle of the station meets the requirement of 1/50.Research on the multi-tower effect and the variable internal force of the cable in earthquake shows that the structures have excellent seismic-resisting capacity.
出处
《建筑结构》
CSCD
北大核心
2009年第12期23-27,共5页
Building Structure
关键词
广州新客站
抗震性能
时程分析
地震响应
New Guangzhou Railway Station
seismic performance
time-history analysis
earthquake response
