| 大吨位连续梁桥支座更换方案比选与施工技术 |
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| 引用本文： | 顾祥峰,虞建成.大吨位连续梁桥支座更换方案比选与施工技术[J].现代交通技术,2012,9(3):50-53. |
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| 作者姓名： | 顾祥峰 虞建成 |
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| 作者单位： | 1. 淮安市交通工程质量监督站,江苏淮安,223001
2. 东南大学交通学院,江苏南京,210096 |
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| 摘 要： | 结合淮安市天津路大运河桥主墩支座更换、支座垫石补强为例，提出了单主墩左、右幅同时多顶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。
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| 关 键 词： | 大吨位支座更换 连续箱梁桥 多顶同步顶升 顶升双控技术 |
Scheme Comparison and Construction of Bearing Replacement for Large Tonnage Continuous Beam Bridge |
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| Gu Xiangfeng,Yu Jiancheng.Scheme Comparison and Construction of Bearing Replacement for Large Tonnage Continuous Beam Bridge[J].Modern Transportation Technology,2012,9(3):50-53. |
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| Authors: | Gu Xiangfeng Yu Jiancheng |
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| Institution: | Gu Xiangfeng,Yu Jianeheng ( 1.Traffic Engineering Quality Supervision Station of Huai＇an City, Huai＇an 223001, China; 2.School of Transportation, Southeast University, Nanjing 210096, China) |
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| Abstract: | 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. |
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| Keywords: | continuous box girder bridge bearing replacement synchronous jacking dual control technology for jacking |
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