城市与公路桥梁抗震设计规范的实例比较  

Example Comparison Between Code for Seismic Design of Urban Bridges and Highway Bridges

作　　者：倪晓博[1] 李闯[1] 叶爱君[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海市200092

出　　处：《公路》2013年第5期1-5,共5页Highway

摘　　要：针对一座规则连续梁桥,采用延性抗震设计策略,分别基于《城市桥梁抗震设计规范》与《公路桥梁抗震设计细则》,进行了全面地地震反应分析和抗震验算,并着重对两本规范的设计反应谱及产生的地震反应、抗震验算指标的计算结果进行了详细地对比分析。结果表明,前者较大的反应谱参数对延性构件的强度和位移能力提出了较大的要求,对于能力保护构件,后者在构件能力计算方面偏于保守,对构件能力提出了更高要求。Using code for seismic design of urban bridges and guidelines for seismic design of highway bridges, a seismic response analysis and check are carried out for a regular bridge based on ductility strate-gy. Calculation in details for comparison and analysis are made on response spectra, seismic response and seismic checking parameters. According to the comparison and analysis, some conclusions are drawn. For the ductility components, the former one requires larger strength and displacement ability according to its larger response spectra. For the ability protection components, the latter one gives a conservative ability value and therefore sets a still higher demand.

关 键 词：桥梁抗震 规范 比较 延性 算例 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]