岩溶区桥梁沉降的加固和预防  

Reinforcement and Prevention of Bridge Settlement in Karst Areas

作　　者：肖震 马涛 XIAO Zhen;MA Tao(CCCC Second Highway Consultants Co.Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉市430056

出　　处：《公路》2024年第7期320-325,共6页Highway

摘　　要：在高速公路改扩建项目中,桥梁加宽由于受老桥的影响,其设计、施工与新建项目存在很多不同之处。在桥梁设计、施工中通常注重成桥状态,容易忽视施工过程中对老桥的保护。以某高速公路拼接桥梁为实例,介绍老桥沉降时的分析处理过程,提出岩溶区桥梁在设计和施工中的预防措施和注意事项,可为拼宽桥梁桩基沉降的加固处理和预防提供参考。In the expressway renovation and expansion projects,due to the influence of the old bridge,there are many differences in design and construction compared with new construction projects.In the design and construction,the close state is usually paid great attention while neglecting protection to the old bridge.In the paer,a widened bridge on an expressway is taken as background,the settlement treatment process of old bridges during construction is introduced,and how to prevent bridge settlement in karst areas during design and construction is proposed,which could provides reference for strengthening and prevention of pile foundation settlement of widened bridges.

关 键 词：高速公路 桥梁工程 改扩建 桥梁拼接 岩溶 沉降 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]