贝雷梁受力验算分析浅述

A Brief Introduction to the Force Analysis of Bailey Beam

在某市内环(北线)快速化改造的主线高架工程中遇到上跨河道并需要采用满堂支架施工的情况,采用贝雷梁跨越河道、并在贝雷梁上方采用满堂支架施工方法。贝雷梁的内力分布情况与一般简支梁的内力分布情况基本相同,即跨中弯矩较大、剪力较小。计算结果表明:如遇河道不能搭建支架的情况下可搭设贝雷梁并在之上建设支架使工程得以有效进行,贝雷梁属于桁架受力体系,容易在荷载作用点处出现应力峰值。

Due to the fact that in the main line elevated project of the rapid transformation of the inner ring(north line)of a city,it is encountered that the upper river channel is crossed and the full house support construction is required.After the analysis of the actual situation,it was decided to adopt the Bailey beam to cross the river and adopt the full-hall support construction method above the Bailey beam.The internal force distribution of Bailey beams is basically the same as that of general simply supported beams,that is,the bending moment in the span is larger and the shear force is smaller.The calculation results show that if the river cannot build a support,the Bailey beam can be erected and the support can be built on top of it to make the project be carried out effectively,and the Bailey beam belongs to the truss stress system,which is easy to have a stress peak at the load application point.