摘要
近年来独柱墩曲线梁桥垮塌事故频发,急需通过验算复核独柱支承桥梁对存在的安全隐患进行排查,但国内对独柱墩连续梁桥偏载下的倾覆问题研究处于起步阶段,计算理论、设计方法及相关的规范要求尚不成熟。为研究独柱墩桥梁抗倾覆验算策略,搜集了广东省交通厅、广东交通集团及相关规范的独柱墩抗倾覆的相关理论及验算方法,对比了不同验算策略的验算内容、验算方法及安全系数指标,并引入广东省内某一独柱墩结构桥梁为工程实例,应用有限元仿真计算方法,对现有省厅指导意见及现行规范的应用进行说明。结果表明:广东省交通厅指导意见与现行规范的验算理论基本一致,广东省交通集团验算指导意见与现行规范在验算内容和验算方法上在验算指标和抗倾覆安全系数取值上存在差异。
In recent years,the collapse accidents of curved beam Bridges with single pier occur frequently,and it is urgent to check the safety hidden dangers of single pier supported Bridges by checking the calculation.However,the domestic research on the overturn problem under off-load of continuous beam Bridges with single pier is in the initial stage,and the calculation theory,design method and related specification requirements are not mature.In order to study the anti-overturning checking strategy of single-column pier bridges,was the relevant theories and checking methods of anti-overturning single-column pier bridges from Guangdong Provincial Department of Transportation,Guangdong Communications Group and relevant norms was,the checking contents,checking methods and safety coefficient indexes of different checking strategies was compared,and a single-column pier structural bridge in Guangdong Province as an engineering example,was introduced by finite element simulation calculation method.The application of the existing provincial guidelines and the current norms is explained.The results show that the guidance of Guangdong Provincial Transportation Department is basically consistent with the checking theory of the current standard,but there are differences between the guidance of Guangdong Provincial Transportation Group and the current standard in the checking content and checking method of the checking index and the value of anti-overturning safety factor.
作者
马文划
MA Wenhua(Guangdong Jiaoke Testing Co.,Ltd.,Guangzhou 510550,China)
出处
《建筑结构》
北大核心
2023年第S02期354-357,共4页
Building Structure
关键词
独柱墩
偏载
抗倾覆验算策略
验算指标
抗倾覆安全系数
有限元仿真计算
single pillar pier
off-load
anti-overturning checking strategy
checking index
safety factor against overturning
finite element simulation
