基于公路桥梁震害的烈度评定研究  

Research on intensity assessment based on seismic damage of highway bridges

作　　者：林庆利[1] 林均岐[1] 刘金龙[1] 孙路[2] 

机构地区：[1]中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室,黑龙江哈尔滨150080 [2]哈尔滨学院工学院,黑龙江哈尔滨150086

出　　处：《地震工程与工程振动》2017年第4期97-103,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家科技支撑计划课题(2015BAK17B04)~~

摘　　要：汶川地震积累了大量公路桥梁的震害资料,这为开展公路桥梁震害与地震烈度的相关性研究奠定了基础。本文整体介绍了汶川地震公路桥梁的震害情况,通过统计整理近2 000座桥梁的震害资料,分别得到了拱桥与梁桥的主要震害类型,并探讨了它们的发生概率与不同地震烈度的对应关系,还分析了关键构件的破坏程度随地震烈度的变化规律。最后,基于桥梁破坏等级和典型震害的形式分别提出了评定地震烈度的建议指标,并进行了对比分析。After Wenchuan earthquake, a great deal of seismic damage data of highway bridges is obtained, which provides a foundation for study on the correlation between bridge earthquake damage and seismic intensity. In this paper, the seismic damage of highway bridges in Wenchuan earthquake is introduced in detail. Through the statistical analysis of about 2 000 highway bridges with detailed damage materials, the main seismic damage types of both arch bridges and girder bridges are learned. Meantime, the corresponding relations between those damage types and various intensities are discussed. The variation of the damage degree of key components also is analyzed. Finally,two sets of proposed index for intensity assessment are put forward and compared , one in terms of damage levels, the other typical damage types.

关 键 词：地震烈度 公路桥梁 破坏等级 典型震害 烈度评定 

分 类 号：P315.3[天文地球—地震学]