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A platform for research: civil engineering, architecture and urbanism
Method for jacking box girder on old bridge
The invention relates to the technical field of old road reconstruction and extension bridge reconstruction engineering, in particular to a method for jacking a box girder on an old bridge, and aims at solving the problems that an existing bridge reconstruction engineering girder body is large in overall synchronous jacking construction difficulty, high in danger coefficient, poor in economical efficiency and the like. The method comprises the steps of placing a vertical jack; mounting an I-shaped steel beam: fixing a steel wire rope, jacking the middle box girder, and placing the vertical jack; and placing a boundary beam bracket, adjusting the two vertical jacks in the step 5, jacking the end box girder, and removing the old bridge deck and breaking a wet joint or a wet-joint-free bridgeon the premise of application. Adverse factors such as large construction difficulty, high danger coefficient, unreasonable economy and the like of the whole span or whole connection lifting box girder are solved; meanwhile, the problems that the gap between the beam bottom and the top surface of the bent cap is too small and a jack cannot be placed due to aging deformation of a rubber support because an old bridge is not provided with a support padstone are solved; tools used in the method are convenient and easy to take, the operation method is simple, time, labor and labor are saved, and the overall work efficiency can be improved by 50% or above.
本发明涉及旧路改扩建桥梁改造工程技术领域，具体涉及一种旧桥顶升箱梁的方法，为解决现有桥梁改造工程梁体整体同步顶升施工难度大、危险系数高、经济性差等问题，本方案包括以下步骤：放置立式千斤顶；安装工字钢梁：固定钢丝绳，顶升中部箱梁，放置立式千斤顶；放置边梁托架，调整步骤五所述的两个立式千斤顶，顶升端部箱梁，在拆除旧桥面和破除湿接缝或无湿接缝桥梁的适用前提下。解决了整跨或整联提升箱梁施工难度大、危险系数高、经济不合理等不利因素；同时还解决了因旧桥无支座垫石，橡胶支座老化变形导致梁底与盖梁顶面间隙过小，无法放置千斤顶的难题；本发明所用工具方便易取，操作方法简单，省时、省力、省工，整体工效可提高50％以上。
Method for jacking box girder on old bridge
The invention relates to the technical field of old road reconstruction and extension bridge reconstruction engineering, in particular to a method for jacking a box girder on an old bridge, and aims at solving the problems that an existing bridge reconstruction engineering girder body is large in overall synchronous jacking construction difficulty, high in danger coefficient, poor in economical efficiency and the like. The method comprises the steps of placing a vertical jack; mounting an I-shaped steel beam: fixing a steel wire rope, jacking the middle box girder, and placing the vertical jack; and placing a boundary beam bracket, adjusting the two vertical jacks in the step 5, jacking the end box girder, and removing the old bridge deck and breaking a wet joint or a wet-joint-free bridgeon the premise of application. Adverse factors such as large construction difficulty, high danger coefficient, unreasonable economy and the like of the whole span or whole connection lifting box girder are solved; meanwhile, the problems that the gap between the beam bottom and the top surface of the bent cap is too small and a jack cannot be placed due to aging deformation of a rubber support because an old bridge is not provided with a support padstone are solved; tools used in the method are convenient and easy to take, the operation method is simple, time, labor and labor are saved, and the overall work efficiency can be improved by 50% or above.
本发明涉及旧路改扩建桥梁改造工程技术领域，具体涉及一种旧桥顶升箱梁的方法，为解决现有桥梁改造工程梁体整体同步顶升施工难度大、危险系数高、经济性差等问题，本方案包括以下步骤：放置立式千斤顶；安装工字钢梁：固定钢丝绳，顶升中部箱梁，放置立式千斤顶；放置边梁托架，调整步骤五所述的两个立式千斤顶，顶升端部箱梁，在拆除旧桥面和破除湿接缝或无湿接缝桥梁的适用前提下。解决了整跨或整联提升箱梁施工难度大、危险系数高、经济不合理等不利因素；同时还解决了因旧桥无支座垫石，橡胶支座老化变形导致梁底与盖梁顶面间隙过小，无法放置千斤顶的难题；本发明所用工具方便易取，操作方法简单，省时、省力、省工，整体工效可提高50％以上。
Method for jacking box girder on old bridge
一种旧桥顶升箱梁的方法
LIU BAOCUN (author) / TANG XIAOJUN (author) / YU LIANCHENG (author) / WANG ZHONGYUAN (author) / YOU CHUNYING (author)
2020-08-18
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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