摘要
近20年的地震灾害,使得桥梁延性抗震越来越受到重视,目前,大多数国家的桥梁抗震设计规范已经采纳了延性抗震理论。而进行桥梁延性抗震设计,除必要的计算外,还要十分重视可靠的构造措施。本文比较了国内外桥梁抗震设计规范和学者提出的桥梁延性抗震构造设计的有关内容,主要包括:桥墩抗剪构造措施的要求及计算规定、延性桥墩中纵向钢筋的构造措施、约束核芯混凝土箍筋的布置形式、箍筋间距、箍筋用量、塑性铰区长度的规定以及钢筋的锚固与搭接规定,旨在对我国桥梁抗震设计提供一定的参考。
Ductility seismic design is attached more importance due to earthquake damages in recent 20 years. And the ductility seismic theory has been written into seismic design criteria in most countries. In ductility seismic design, except for necessary calculation, reliable constructional details are also very important. In this paper, constructional details on ductility seismic design of bridge in domestic and overseas criteria and studies of researchers are compared, mainly including： shear requirements and calculation rules of piers, constructional details of longitudinal reinforcement,configuration,space and amount of lateral reinforcement,length of plastic hinge region,anchor and overlap of steel, etc. It aims to provide reference for bridge seismic design in China.
出处
《工程抗震与加固改造》
北大核心
2009年第2期1-8,共8页
Earthquake Resistant Engineering and Retrofitting
基金
国家自然科学基金项目(50778131)
国家科技支撑计划项目(2006BAG04B01)
关键词
延性抗震
构造设计
国内外
抗剪
箍筋
ductility seismic design
constructional detail
domestic and overseas
shear
lateral reinforcement
