摘要
为了修复城市狭窄河道的挡墙病害和保障行洪安全,针对现有挡墙不宜扰动、河道过水断面不可压缩及墙背无作业空间等技术难题,提出了一种采用U形倒门架间隔对撑病害挡墙的加固思路。以南京市江北新区友谊河挡墙加固工程为例,通过对比6种不同加固方案的施工效果,对所提出的倒门架加固思路进行了评价,并对该加固方案主要技术要点和施工效果进行了概述。研究结果表明,所提U型倒门架加固方案能够不受病害挡墙本体及周边环境制约,在基本维持河道原貌的同时实现加固挡墙的目的。
In order to repair the retaining walls of urban narrow river channel and ensure the safety of flooding,the reinforcement method is proposed by the U-shaped inverted gantry spacing to support the disease retaining wall.The application of this reinforcement method can overcome some technical difficulties such as the inability to disturb the retaining wall,the incompressibility of the river cross section and the lack of wall back working space.Taking retaining wall reinforcement project at Youyi River on jiangbei new district of Nanjing City for example,the reinforcement idea of inverted door frame is evaluated by comparing the construction effect of six reinforcement schemes.And the main technical points and construction effect of the proposed reinforcement scheme are also summarized.The result shows that the U-shaped inverted gantry retaining wall reinforcement scheme is not restricted by the body of the disease retaining wall and the surrounding environment,and the purpose of reinforcing the retaining wall can be achieved while maintaining the original appearance of the river channel.
作者
谢义华
XIE Yihua(The 7th Engineering Co.,Ltd.,China Railway 12th Bureau Group,Changsha,Hunan 410004,China)
出处
《湖南城市学院学报（自然科学版）》
CAS
2020年第3期20-23,共4页
Journal of Hunan City University:Natural Science
关键词
狭窄河道
河道整治
挡墙加固
narrow river channel
channel improvement
retaining wall reinforcement
