资源下载简介

建筑工程地下连续墙施工工艺简介：

地下连续墙，也称为深层搅拌桩挡墙或地下防渗墙，是一种在地下施工的墙体，主要用于建筑物的地下结构，如地下室、地铁、隧道等的防渗、防洪、支撑等。其施工工艺主要包括以下几个步骤：

1. 场地准备：清理施工区域，确保地面平整，无杂物。根据设计图纸确定钻孔位置和深度，设置导向桩。

2. 钻孔：使用钻孔设备（如螺旋钻、冲击钻等）在预定位置钻孔，形成孔洞。孔径和深度根据设计要求设定。

3. 搅拌：在钻孔过程中或钻孔后，通过搅拌设备将混凝土浆液与土壤混合，形成一定稠度的混合物。此步骤是地下连续墙的核心，可以防止土体塌落，提高墙体的稳定性。

4. 注浆：将混合物通过钻杆注入孔内，随着浆液的凝固，土体与混凝土浆液结合，形成连续的墙体。此过程可能需要分段进行，以保证墙体的连续性。

5. 固定：待浆液凝固后，可以采用振动、锤击等方法使墙体与周围土壤紧密结合。同时，需要进行墙体的垂直度和厚度的检查，确保墙体质量。

6. 回填和封口：墙体完成后，进行回填作业，并安装封口装置，防止地表水渗透。

7. 后续施工：墙体完成后，进行后续的防水、支撑等结构施工。

整个过程需要严格控制施工质量和进度，以确保地下连续墙的性能满足设计要求。

建筑工程地下连续墙施工工艺部分内容预览：

注浆材料采用水泥＋粉煤灰＋水以一定比例配制而成，浆液保证有足够的和易性和流动性，以利于注浆。

目 录

一、地下连续墙施工工艺流程及施工顺序··································1

1.1施工工艺流程图································································1

GB 50023-2009 建筑抗震鉴定标准二、导墙施工···················································································2

2.1导墙测量放样································3

2.2导墙形式的确定································································3

2.3导墙沟槽开挖····································································3

2.4导墙钢筋施工····································································4

2.5导墙模板施工····································································4

2.6导墙混凝土浇注································································4

2.7导墙的施工允许偏差························································4

三、单元槽段成槽施工···································································4

3.1单元槽段成槽开挖宽度····················································4

3.2单元槽段开挖····································································4

3.3成槽时泥浆面控制····························································5

3.4清底····················································································6

3.5刷壁····················································································6

3.6槽段开挖精度·····································································7

四、泥浆配制和管理·······································································8

4.1泥浆配置与管理································································8

4.2泥浆池的容量确定····························································9

五、地下连续墙接头处理·····························································10

六、钢筋笼制作与吊放·································································10

6.1 钢筋笼制作·····································································10

6.2地下连续墙钢筋笼制作的允许偏差······························12

6.3钢筋笼吊放······································································12

七、砼灌注·····················································································13

八、接头管起拔·············································································14

九、地下连续墙针对性技术措施·················································14

9.1槽壁坍方预防措施··························································14

9.2成槽垂直度控制措施·······················································15

CECS433-2016 毛细管网辐射供暖供冷施工技术规程9.3地下连续墙渗漏水预防及处理措施·······························16

9.4地下墙露筋现象的预防措施···········································17

9.5成槽漏浆现象的预防及处理措施···································17

9.6对于钢筋笼无法下放到位的预防及处理措施···············17

钢管脚手架施工方案9.7对预埋件标高控制措施····················································17

十、地下连续墙墙趾注浆·······························································18