【摘要】 根据功能要求、使用情况等确定抗震设防标准及设防目标,对拟建连续刚构桥建立全桥整体分析模型,选定不同概率水准的参数,采用纵向+竖向、横向+竖向的方式作为地震动输入,以寻求结构在纵、横向地震作用时各桥墩的内力分布规律,综合分析评价桥梁抗震性能。反应谱法计算结果表明:该桥具有足够的抗震能力,可以满足预期的设计性能。建议应更深入开展基于性能的抗震理论研究,并逐步将该方法应用于桥梁抗震设计。更多还原

【Abstract】 According to the functional requirements and service condition,seismic fortification criterion and target are determined.The whole analysis model of the continuous rigid-frame bridge is built.Parameters at different probability are selected,load combination with longitudinal,transverse and vertical earthquake motion are input,in order to find internal force distribution and evaluate the anti-seismic performance of this bridge.Results obtained from response spectrum method show that the bridge can offer enough anti-seismic bearing capacity and meet the expected design goal.The performance-based seismic design should be deeply developed and gradually applied in bridge seismic design.更多还原