站橋合一的大型客站站房結構抗震性能研究
王軼,張力,甄偉,徐福江,盛平
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(北京市建筑設計研究院,北京 100045)[摘要]站橋合一的廣州新客站將成為我國重要的交通樞紐,其特點為鐵路橋梁與站房建筑“合一”,結構體系復雜。研究了廣州新客站的動力特性,在自振特性分析的基礎上,分別采用反應譜法和時程法研究了結構在小震、中震下的彈性響應,結果表明鐵路橋梁剛度較大,可以作為上部結構的嵌固層;中震下各個構件滿足“中震不屈服”的抗震性能目標要求。進行了大震下結構的彈塑性時程分析,結果表明結構最大層間位移角滿足1 /50 的限值條件。對結構在地震作用下的多塔效應和拉索內(nèi)力變化情況進行了研究,結果表明結構具有可靠的抗震性能。[關鍵詞]廣州新客站;抗震性能;時程分析;地震響應Study on seismic behavior of large bridge-station combined railway stationWang Yi, Zhang Li, Zhen Wei, Xu Fujiang, Sheng Ping(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract: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.Keywords:New Guangzhou Railway Station; seismic performance; time-history analysis; earthquake response作者簡介:王軼,碩士,工程師,Email:wysky@126.com。參考文獻[1]盛平,柯長華,甄偉,等. 廣州新客站結構總體設計[J]. 建筑結構,2009,39(12).[2]GB50010—2002混凝土結構設計規(guī)范[S]. 北京:中國建筑工業(yè)出版社,2002.[3]GB50011—2001建筑抗震設計規(guī)范(2008年版)[S]. 北京:中國建筑工業(yè)出版社,2008.[4]郭全全,張文芳,吳桂英,等. 中國國家大劇院結構地震分析[J]. 工程力學,2003,20(2).[5]郭彥林,霍軼力.CCTV 新臺址主樓抗震性能研究[J].建筑結構學報,2008,38(3):39-42.[6]劉楓,杜義欣,趙鵬飛,等.武漢火車站多點輸入地震反應時程分析[J].建筑結構,2009,39(1).[7]陳志強,張濤,胡守營,等. 深圳證交所大樓抗震性能分析[J].建筑結構,2008,38(8).
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