桥梁支座更换施工方法探讨

桥梁支座更换施工方法探讨桥梁支座更换施工方法探讨 摘要：在道路的改建和桥梁的养护中，支座的更换改造是不可避开的。支座更换的方法很多，下面分别加以具体介绍，以期对相关从业人员有所帮助。 关键词：桥梁支座；混凝土；施工技术 Abstract: as an important part of highway roadbed, it is not only the main body of the route, it is the foundation of the pavement. The stand or fall of roadbed, relates to the quality of the car of the highway and moving. Therefore, we should attach great importance to roadbed, completes the construction and protective work. So roadbed should have the enough strength, stability and durability. To make the roadbed have the enough strength, stability and durability, roadbed construction control during the period of construction is an important means. Keywords: control technology; Construction technology; Highway subgrade; stability Abstract: in the reconstruction of road and bridge maintenance, support alteration is inevitable. The bearing replacement method are many, below to introduce respectively, so as to help relevant employees. Keywords: bridge bearings; Concrete; Construction technology 中图分类号：K928.78 文献标识码： A 文章编号： 一、前言 桥梁在使用过程中，桥梁支座逐渐出现的各种缺陷和病害，对于较轻微的病害，可以通过加强后期的维护、维修可延长支座的使用寿命，对于严重的病害，则必须实行更换支座的措施。随着国内桥梁顶升支座更换工程的增多，近几年桥梁顶升支座更换水平有了很大提高，解决了实际工程中遇到的大量难题，积累了许多宝贵的设计与施工经验。然而由于桥梁顶升支座更换是针对既有桥梁，其方案受到许多因素的影响，如桥梁结构类型、跨度、截面形式、梁底净空、桥下净空、下部结构形式、地基情况等，情况千差万别，很难给出统一的设计理论和施工方法。必须具体情况具体对待。 二、桥梁支座更换施工方法 1、枕木满布式支架法 枕木满布式支架法工作原理为在地面上设置枕木，以枕木为基础，设置满布式或部分木支架至桥梁梁体处，在支架上安置千斤顶...