摘要
为适应城市的发展,改善道路交通条件,道路改扩建项目越来越多。对于改扩建后桥梁接坡段挡土墙位置不变的项目,挡土墙由于损坏或改扩建后道路等级提高不能直接利用。直接拆除挡土墙后新建,不但会严重影响现状交通,对现状接坡段道路的施工质量也会造成不利影响。因此,应尽可能利用现状挡土墙。基于大叶公路由二级公路改扩建为一级公路的工程案例,提出对现状挡土墙先进行检测及验算,判别是否可以修复后利用;针对有可能利用的挡土墙,根据不同损害类别情况,分别提出了混凝土及钢筋锈蚀修复、挡土墙高度调整、墙体结构补强、基础加固等不同的修复方案,为现状挡土墙的综合利用提供了一定的设计参考。
In order to adapt to the development of cities and improve the road traffic conditions,there are more and more road reconstruction and expansion projects.For the projects where the position of the retaining wall in the slope section of the bridge remains unchanged after reconstruction and expansion,the retaining wall cannot be directly utilized due to damage or an increase in road grade after reconstruction and expansion.The direct demolishing of the retaining wall and the building of a new one will not only seriously affect the current traffic,but also have adverse effects on the construction quality of the existing sloping section of the road.Therefore,the existing retaining walls should be utilized as much as possible.Based on the engineering case of Daye Highway from second-grade highway to first-grade highway,it is proposed to conduct the inspections and checking calculation of the existing retaining walls first to determine whether the walls can be repaired and reused.Aiming at the retaining walls possibly to be reused,the different repair schemes are proposed for the concrete and steel bar corrosion repair,retaining wall height adjustment,wall structure reinforcement and foundation reinforcement according to the different types of damage,which provide a certain design reference for the comprehensive utilization of existing retaining walls.
作者
牛建峰
NIU Jianfeng(Shanghai Municipal Engineering Design Co.,Ltd.,Shanghai 201306,China)
出处
《城市道桥与防洪》
2025年第8期82-87,共6页
Urban Roads Bridges & Flood Control
关键词
挡土墙检测
病害修复
结构补强
基础加固
retaining wall detection
disease repair
structural reinforcement
foundation reinforcement
作者简介
牛建峰(1983-),男,硕士,工程师,从事道路交通设计工作。
