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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。
Aiming at a regular continuous girder bridge, a ductile seismic design strategy is adopted to conduct a comprehensive seismic response analysis and earthquake proofing test based on the “Code for Aseismic Design of Urban Bridges” and “Seismic Design Rules for Highway Bridges”, respectively. The design of the two codes Response spectrum and the seismic response, seismic calculation results of the indicators were analyzed in detail. The results show that the former large response spectrum parameter poses great requirements for the strength and displacement ability of ductile members. For capacity protection members, the latter is conservative in component capacity calculation and poses higher requirements on component capabilities.