地铁车站离壁沟施工技术优化  

Optimization of Construction Technology for Off⁃wall Ditch of Metro Station

作　　者：石常齐 SHI Changqi(Xiamen Engineering Co.,Ltd.,China Communications First Engineering Group,Xiamen 361000,Fujian,China)

机构地区：[1]中交一公局厦门工程有限公司,福建厦门361000

出　　处：《流体测量与控制》2024年第2期47-50,共4页Fluid Measurement & Control

摘　　要：从目前地铁车站施工情况看,离壁沟挡水槛常常受到上方侧墙施工的制约,不宜与结构板同步浇筑。而地铁车站离壁沟渗漏水又是一个普遍存在的现象,尤其以后做法施工的离壁沟为甚。离壁沟渗漏水的原因有很多,通过对离壁沟挡水槛设计尺寸、凿毛工艺、防水处理以及混凝土配合比进行优化,结果表明,增大离壁沟挡水槛的宽度、降低其高度、加深凿毛切缝深度、增加喷涂速凝橡胶沥青防水,以及减小混凝土石子粒径,会大幅减少离壁沟渗水点。From the perspective of the current subway station construction,the water retaining sill from the wall ditch is often restricted by the construction of the upper side wall,so it is not suitable to be poured synchronously with the structural board.Water leakage from the wall ditch in the subway station is a common phenomenon,especially in the construction of the wall ditch,there are many reasons for the leakage from the wall ditch.This paper optimizes the design size of the water sill,chisel process,waterproof treatment and concrete mixing ratio.The results show that increasing the width of the water sill from the wall ditch,reducing its height,deepening the depth of the cut,increasing the waterproof of spray fast rubber asphalt,and reducing the size of concrete stone will greatly reduce the seepage point of the wall ditch.

关 键 词：离壁沟 挡水槛 切缝凿毛 喷涂速凝橡胶沥青 

分 类 号：TU57[建筑科学—建筑技术科学]