单柱式钢桥墩抗震性能校验方法  

Check method for seismic performances of single-column type steel piers

作　　者：吉伯海[1,2] 陈冬华[1] 徐声亮[1] 葛汉彬 马麟[1] 

机构地区：[1]河海大学土木与交通学院,江苏南京210098 [2]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098 [3]名城大学理工学部

出　　处：《河海大学学报（自然科学版）》2010年第4期436-441,共6页Journal of Hohai University(Natural Sciences)

基　　金：江苏省自然科学基金(BK2008359);江苏省交通科学研究计划(09Y13)

摘　　要：针对地震作用下钢桥墩的抗震设计问题,首先确定抗震性能校验流程,提出了单柱式钢桥墩性能目标确定方法,其次根据各级抗震性能与损伤级别的对应关系,分析设计荷载产生的设计反应值和结构设计限值的求解问题,建立了结构安全性和震后可使用性的校验公式,给出了采用位移或应变2种性能指标进行校验的限制条件,最后通过单柱式钢桥墩抗震性能校验实例,说明钢桥墩基于性能的抗震校验方法的可靠性.结果表明,与现行校验方法相比,基于性能的抗震校验方法概念清晰、精度较高,易于在工程中推广应用.For the seismic design problems of steel piers under earthquakes,firstly,the basic process about the performance-based seismic check （PBSC） method was determined,and the verification method for performance object of single-column type steel pier was put forward. Then,according to the correlation between the seismic performances and damage levels,how to determine the seismic response caused by the design load and the design ultimate value of structure was analyzed. The check formulas of structural safety after earthquakes were established. The constraint conditions were given by verifying two performance factors of displacement and strain. Finally,a check case of seismic performances of a single-column type steel pier structure verified the reliability of the PBSC method. It is concluded that compared with the existing check methods,the PBSC method is of clear concept,high precision and easily applied in projects.

关 键 词：性能目标 单柱式钢桥墩 抗震性能 校验方法 

分 类 号：TU318.1[建筑科学—结构工程]