某既有防洪挡土墙加固方案研究

Study on Reinforcement Scheme of an Existing Flood Control Retaining Wall

为解决既有防洪挡土墙存在的防洪不达标、墙体变形、墙体裂缝、墙背附加荷载过大、墙体排水不畅等问题。进行了多个加固方案技术经济比较,确定了混凝土格构锚固、原挡墙培厚相结合的分段加固方案,满足现状河道行洪安全的前提下,保证了已建防洪挡土墙的结构安全。结果表明,加固方案实施后挡墙抗滑安全系数、抗倾安全系数均满足规范要求,墙体整体安全性得到提高,修复墙体趋于安全稳定。

In order to solve the problems existing in the existing flood control retaining wall,such as unsatisfactory flood control,wall deformation,wall cracks,excessive additional load on the back of the wall,and poor drainage of the wall,etc.Technical and economic comparison of several reinforcement schemes is carried out in this study.The sectional reinforcement scheme combining concrete lattice anchorage and original retaining wall thickness is determined.On the premise of satisfying the current flood safety of rivers,the structural safety of the built flood control retaining wall is guaranteed.The results show that the anti-slide safety coefficient and anti-roll safety coefficient of the rear retaining wall meet the specifications,the overall safety of the wall is improved,and the repaired wall tends to be safe and stable.