框架地道桥顶进涵施工及其偏差控制  

Jacking Culvert Construction of the Frame Underpass Bridge and Its Deviation Control

作　　者：王冠伟 WANG Guanwei(The Fourth Engineering Co. , Ltd. of China Railway 18th Bureau Group, Tianjin 300350)

机构地区：[1]中铁十八局集团第四工程有限公司,天津300350

出　　处：《常州工学院学报》2021年第3期16-20,共5页Journal of Changzhou Institute of Technology

摘　　要：为探讨框架地道桥顶进涵施工及其偏差控制要点,结合工程实例分析了施工的重难点,接着分析了框架地道桥顶进涵施工方法和偏差控制要点,总结了施工心得。分析得出,在细长类框架地道桥施工中,顶进箱体是重难点,需多次偏转,为避免形成较大的拉应力,引发框架地道桥开裂,影响使用质量,需要切实做好顶进施工偏差控制,才能更好地保证施工质量和施工的安全性。本研究为今后类似工程施工提供参考和借鉴。In order to discuss the jacking culvert construction of the frame underpass bridge and its deviation control points,combined with engineering examples,the key and difficult points in construction,as well as the jacking culvert construction method of the frame underpass bridge and the deviation control points are analyzed,and the construction experience is summarized.It is concluded that in the construction of slender frame tunnel bridges,the jacking box is the key and difficulty,which needs to be deflected many times.In order to avoid the formation of large tensile stress which may lead to the cracking of the frame underpass bridge,thus affecting its quality in use,it is necessary to well control the jacking construction deviation so as to guarantee the construction quality and safety.

关 键 词：框架 地道桥 顶进施工 偏差控制 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]