大跨径拱桥施工贝雷梁拱架的设计与分析  

Design and Analysis of Bailey Beam Arch for Construction of Long Span Arch Bridge

作　　者：李进[1] 黄华[1] 李学才 

机构地区：[1]中交第二公路工程局有限公司,陕西西安710065

出　　处：《筑路机械与施工机械化》2017年第11期55-59,共5页Road Machinery & Construction Mechanization

基　　金：中国交建重点科技研发项目(2011-ZJKJ-24)

摘　　要：为解决山区、库区大跨径拱桥施工支架难搭设的问题,介绍了一种不受洪水与地形的影响、纵向为拱形桁架、以稳定性好的贝雷梁拱架为支架的拱肋分段分环施工技术,并采用有限元仿真技术和经典力学,分析贝雷梁钢拱架在施工过程各工况下的力学性能。结果表明,在拱肋浇筑的各个节段,贝雷梁拱架的应力、变形和稳定性均满足相关施工规范要求。In order t0 solve the problem of difficult construction of large span arch bridge in mountainous area and reservoir area, the construction technology of arch rib segmenting with Bailey beam arch as support was introduced, which is not affected by flood and terrain, and is steady and vertically arched truss. Based on the finite element simulation and the classical mechanics, ~e mechanical properties of the Bailey beam arch were analyzed under various working cottditions. The results show that for every section of the arch rib, the stress, deformation and stability of the Bailey beam arch satisfy the requirements of construction specifications.

关 键 词：大跨径拱桥 贝雷梁拱架 有限元仿真 拱肋 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]