桥头跳车深层搭板技术理论模型研究  

Theoretical Model Research on Deep Approaching Slab Technology for Bumpingat Bridge Head

作　　者：许东风 于远征 李文治 余闯[2] 吴则祥 XU Dongfeng;YU Yuanzheng;LI Wenzhi;YU Chuang;WU Zexiang(Wenzhou Transportation Planning and Design Institute,Wenzhou 325000,Zhejiang,China;College of Architecture and Civil Engineering,Wenzhou University,Wenzhou 325035,Zhejiang,China)

机构地区：[1]温州市交通规划设计研究院,浙江温州325000 [2]温州大学建筑工程学院,浙江温州325035

出　　处：《路基工程》2020年第5期32-35,共4页Subgrade Engineering

摘　　要：结合以往公路桥梁桥头跳车问题处理的经验和基础沉降计算的理论基础,对采用桥头深层搭板处理桥头跳车技术进行理论研究。将深层搭板技术简化为双层板模型,通过薄板理论和温克勒(Winkler)模型对双层板模型进行推导,并对单层板和双层板计算模型进行数值分析比较。结果表明:深层搭板技术相较于传统技术对于路基沉降有一个较好控制,能有效解决桥头跳车问题;基于Winkler模型建立的双层板弯曲计算模型能很好地计算桥头过渡段深层搭板设置的沉降。Relying on the experience to deal with bumping at bridge head and the theoretical basis to calculate foundation settlement,the theoretical research on deep approaching slab technology for this problem was carried out.Herein the technology was simplified to a model of double layered slab,and then the derivation was conducted by use of plate theory and Winkler model;next,the numerical analysis and comparison between single and double layered slab model were carried out.The result shows that,in contrast to traditional technology,deep approaching slab technology is of a relatively good control on subgrade settlement,and may solve the problem of bumping at bridge head;the double layered slab model for bending calculation based on Winkler model is proved to play a good role to calculate the subsidence of deep approaching slab set in bridge head transition.

关 键 词：桥头跳车 深层搭板技术 WINKLER地基模型 单层板地基模型 双层板地基模型 

分 类 号：U491.252[交通运输工程—交通运输规划与管理]