钢筋混凝土圆形截面柱式桥墩抗震性能评价  

Seismic performance-assessment of RC circular column piers

作　　者：王东升[1] 郭恩栋[1] 柳春光[1] 翟桐[1] 

机构地区：[1]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《世界地震工程》2001年第1期98-102,共5页World Earthquake Engineering

基　　金：地震科学联合基金资助项目

摘　　要：对４座典型钢筋混凝土圆形截面双柱式桥墩，利用ｐｒｉｅｓｔｌｅｙ等建议的钢筋混凝土桥墩抗剪强度计算方法和破坏型态描述方程，结合Ｐｕｓｈ－ｏｖｅｒ方法进行了延性抗震能力评价．一般说来，纵桥向能够满足延性抗震要求，而横桥向一些配箍率较低的桥墩在地震中会发生脆性的弯剪破坏，其底部塑性铰将形成在桩基之中，部分桩基可能会遭受损害。In this paper shear strength calculation and failure mode assessment of RC bridge column proposed by Priestley are used, and ductility capacity of 4 typical RC circular double-column piers is discussed by push-over method. As a general result,,ductility capacity in the longitudinal direction of the bridge can satisfy the seismic requirements, but in the transversal direction of the bridge some columns of lower transverse reinforcement ratio will produce semi-ductile shear-critical destroy with the plastic hinges formed at piles underground and some piles damaged.

关 键 词：双柱式桥墩 延性 Rush-over法 钢筋混凝土 抗震性能 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]