公路桥梁抗震能力静态参数及构造措施的调查研究

对我国现有公路桥梁的抗震能力静态参数及构造措施进行了调查研究,调查范围包括西北、东北、华北和西南等10个处在高烈度地震区的省、市和自治区,其中有些近年来发生过破坏性地震,调查结果具有普遍性。调研中收集到地震烈度7度以上地区,总共6 700多座为20世纪50年代~90年代修建的现役公路桥梁的资料。根据调查资料,本文对10省、区(市)公路桥梁抗震设防情况进行统计分析;并根据研究结果,分析了我国现行公路桥梁抗震设计规范的不足,为规范的修订提出了建议。

Investigation and Research on Anti-Seismic Capacity Static Parameter and Structure Measures for Highway Bridges

In this paper,the investigation and research on the anti-seismic capacity static parameter and structure measure for existing highway bridges in China are carried out,the range of investigation include ten provinces that are located in highly seismic regions,some of which generated destructive earthquake recently.The datum of more than 6 700 active service bridges built from the fifties to the nineties of the twentieth century are collected.According to the datum,the cases of anti-seismic protection of highway bridges are statistical analyzed.Analysis results illustrate there are some deficiencies in the present anti-seismic design specification for highway bridges in China,and several recommendations are presented for revising of the specification.