顶升技术在城市桥梁加固中的应用  

Application of Lifting Technology in City Bridge Strengthening

作　　者：王智慧[1] 孙广龙[1] 

机构地区：[1]北京市市政工程设计研究总院有限公司,100082

出　　处：《特种结构》2015年第6期53-57,共5页Special Structures

摘　　要：本文详细介绍了顶升技术及其在桥梁加固中的应用,重点介绍了用于增设辅助墩加固法。增设辅助墩法需要通过桥梁顶升托换实现,但是,顶升托换是一种复杂的体系转换过程,必须通过仿真分析方法对桥梁顶升前、顶升过程及顶升后桥梁状况进行分析计算,从而合理确定设计与施工方案,以确保施工过程的安全可靠。通过对某三跨连续梁桥的加固过程的计算分析,确定同步顶升的设计控制值,指导了顶升实际施工过程。经与现场监控结果对比,计算分析结果准确合理。This paper introduced the lifting technology and its application in city bridge strengthening, and the emphasis was focused on the application of auxiliary pier reinforcement method. Additional auxiliary pier meth- od need to be realized through the bridge lifting up. Analysis and calculation of bridge condition of bridge top, lifting process and top lift of bridge must be carried out by means of simulation analysis, so as to determine the reasonable design and construction scheme, and ensure the safety and reliability of the construction process. Based on the calculation and analysis of the reinforcement process of a three span continuous girder bridge, the design and control of the synchronous lifting up was determined, which guide the actual construction process of the top. Compared with the results of field monitoring, the results of calculation and analysis are reasonable.

关 键 词：混凝土梁桥 体系转换 顶升托换 维修加固 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]