框架涵顶进施工过程中力学及安全性检算探析  

Discussion and analysis of mechanics and safety performance checking calculation during jacking construction of frame culvert

作　　者：王新选 Wang Xinxuan(The 2nd Engineering Co.,Ltd of China Railway 21st Bureau Group,Lanzhou 730030,China)

机构地区：[1]中铁二十一局集团第二工程有限公司,甘肃兰州730030

出　　处：《山西建筑》2021年第6期128-130,133,共4页Shanxi Architecture

基　　金：中铁二十一局集团第二工程有限公司科技研究开发计划项目(项目编号:zt212-19-2)。

摘　　要：框架涵顶进施工是现阶段桥梁施工常用的一种施工工艺,顶进过程中的力学性能验算在保证施工的安全及质量方面起到重要的作用。结合某下穿铁路的框架涵顶进施工的具体情况,对顶进过程中的便梁和桩柱的力学及安全性能、框架桥顶进过程中的顶推力以及顶进过程中框架桥内力进行了检算。检算结果确保了框架涵在顶进施工过程中的力学及安全性能满足规范要求,保证了施工的顺利进行,研究成果对同类工程的施工具有一定的借鉴意义。Frame culvert jacking construction is a commonly used construction technology for bridge construction at this stage.The mechanical performance check calculation during jacking process plays an important role in ensuring the safety and quality of construction.This article combines the specific conditions of the jacking construction of a frame culvert underneath a railway,and analyzes the mechanical and safety performance of the auxiliary beams and piles during the jacking process,the jacking force during the jacking process of the frame bridge,and the internal force of the frame bridge during the jacking process.A check was made.The result of the check calculation ensures that the mechanical and safety performance of the frame culvert during the jacking construction process meets the requirements of the specification and the smooth progress of the construction.The research results have certain reference significance for the construction of similar projects.

关 键 词：桥梁工程 顶进涵施工 力学性能检算 

分 类 号：U449.5[建筑科学—桥梁与隧道工程]