顶推法桥梁施工中贝雷片导梁的整体稳定性分析
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（长安大学建筑工程学院， 西安 710061）[摘要] 为了研究贝雷片组装导梁的可行性，本文采用MIDAS/Civil通用软件对一实际工程中的导梁进行模拟，研究其在不同受力状态下的整体稳定性。结果表明:自重荷载和横向支撑对其整体稳定性影响较大，而安装误差则影响较小；合理的设计会使这种导梁具有足够高的整体稳定安全系数，可推广应用于实际工程中。[关键词] 贝雷片; 整体稳定性; 顶推法; 导梁中图分类号：TU375.1 文献标识码：A 文章编号：1002-848X(2013)S2-0717-03作者简介：雷自学，学士，教授， Email:thunderleizixue@126.com。Overall stability analysis of launching nose made of Bailey panels in bridge construction with the incremental launching methodLei Zixue, Li Wenke(School of Civil Engineering, Chang’an University, Xi’an 710061, China)Abstract: In order to study the feasibility of using Bailey panels to assemble launching noses, general software MIDAS/civil was adopted to model the launching nose in a real project to investigate its overall stability under different loading conditions. The results show that the self weight and lateral bracing both have considerable effect on its overall stability, while the assembling tolerances have minor effect on it; rational design can make the launching nose adequately stable, so that such launching noses can be widely used in practice.Keywords: Bailey panel; overall stability; incremental launching method; launching nose
