摘要
为防止强震作用下简支梁桥产生落梁,依据JTG/T B02-01—2008《公路桥梁抗震设计细则》的抗震设计方法,运用均匀设计法设计了一系列简支梁桥数值模型,并计算了E2地震作用下墩梁的相对位移。同时,根据数值分析结果,综合考虑跨径、墩高和斜交角的影响,运用最小二乘法拟合出简支梁桥最小搭接长度的实用简化计算公式,其可为简支梁桥抗震设计提供参考。
In order to prevent seismic hazard of drop beams of simply supported beam bridges under the effect of strong earthquake, this paper designs series numerical models of simply supported beam bridges by means of the uniform design method in accordance with the seismic design methods in JTG/T B02 -01 - 2008 ＂Detailed Rules for Seismic Design of Highway Bridges＂, and calculates the relative displacement of pier beams under the effect of E2 earthquake. In the meantime, in accordance with the results of numerical analysis, the paper comprehensively considers influences of span, pier height and skew angle, and applies the least square method to fit the practical simplified computational formula of the minimum overlapping length of simply supported beam bridges, simply supported beam bridges. which can provide a reference for seismic design ofsimply supported beam bridges.
出处
《公路交通技术》
2015年第5期37-43,共7页
Technology of Highway and Transport
基金
国家国际科技合作专项项目(2011DFA83300)
国家重点基础研究发展计划项目(2010CB736103
2012CB723807)
交通运输部西部交通科技项目(2013 319 740 090
2009 318 000 006)
关键词
简支梁
地震
防落梁
最小搭接长度
数值试验
simply supported beam
earthquake
anti - drop beam
minimum overlapping length
numeric test
