摘要
结合淮安市天津路大运河桥主墩支座更换工程实践,提出了单主墩左、右幅梁体同时同步顶升及顶升力和位移"双控"技术,并通过现场监控,控制最大顶升量和左右幅顶升高差,顺利实现了大吨位支座更换。
Combining with engineering practice of bearing replacement of Grand Canal bridge main pier in Tianjin road Huai＇an city,this paper suggestes that synchronous jacking technology should be used for the beam bodies in the left and right side of a main pier at the same time,jacking force and jacking displacement should be controlled simultaneously as well. The maximum amount of jacking and height difference of jacking are controlled by field monitoring. Through the technology, large tonnage bearings are replaced successfully.
出处
《现代交通技术》
2012年第3期50-53,共4页
Modern Transportation Technology
关键词
连续箱梁桥
支座更换
同步顶升
顶升双控技术
continuous box girder bridge
bearing replacement
synchronous jacking
dual control technology for jacking
