大跨度钢桥梁顶推过程中的竖曲线线形控制技术  

Vertical Curve Linear Control Technology in Launching Process of Long Span Steel Bridge

作　　者：宋敏 朱江 皮淑萍 邰鹏鸣 叶倍君 SONG Min;ZHU Jiang;PI Shuping;TAI Pengming;YE Beijun(Zhongyifeng Construction Group Co.,Ltd.,Suzhou,Jiangsu 215131,China)

机构地区：[1]中亿丰建设集团股份有限公司,江苏苏州215131

出　　处：《建筑施工》2020年第11期2119-2121,共3页Building Construction

摘　　要：为保证大跨度钢桥梁顶推施工过程的安全以及顶推完成后桥梁的整体竖曲线线形符合设计要求,通过控制钢桥梁整体沿竖曲线切线方向顶进并在顶进过程中及时调节梁底标高,消除了顶进过程中不同顶推段之间的折线角误差及由桥梁预拱产生的误差,最终成功地实现了竖曲线的线形控制。In order to ensure the safety during the jacking construction of large span steel bridge and the overall vertical curve linear of the bridge after the completion of jacking,the linear control of the vertical curve is successfully achieved by controlling the overall jacking along the tangent direction of the vertical curve and adjusting the elevation of the beam bottom in the jacking process in time to eliminate the fold angle error between different jacking sections and the error caused by the pre-arched bridge.

关 键 词：钢桥梁 顶推 竖曲线 线形控制 

分 类 号：TU99[建筑科学—市政工程]