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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。
The static parameters and structural measures of anti-seismic capability of the existing highway bridges in China were investigated. The investigation scope includes 10 provinces, municipalities and autonomous regions in the high-intensity earthquake area, such as Northwest, Northeast, North China and Southwest, some of which occurred in recent years After devastating earthquakes, the survey results are universal. The survey collected more than 7 degrees seismic intensity, a total of more than 6,700 for the 20th century, the construction of the 50’s to 90 years highway bridge information. According to the survey data, this paper makes a statistical analysis on the seismic fortification of highway bridges in ten provinces, districts and cities. Based on the research results, this paper analyzes the shortcomings of the current codes for seismic design of highway bridges in our country, and puts forward some suggestions for the revision.