邻近浅埋地铁及市政共同沟的深45m地下连续墙施工技术

Construction Technology for 45m Deep Underground Diaphragm Wall Adjacent to Shallow Buried Subway and Utility Trench

上海华泰金融大厦工程基坑周围环境复杂,基坑北侧及南侧分别为轨道交通8号线及市政共同沟,埋深较浅。同时施工场地地质复杂,地下连续墙较深,且采用型钢接头,单幅吊重较大,施工难度高。通过优化地下连续墙施工工艺,采取了预埋注浆管等措施保证了地下连续墙施工质量,同时对周边环境进行了很好的保护。

The north and south sides of foundation pit of Shanghai Huatai Financial building project respectively are shallow buried metro line 8 and municipal utility trench. At the same time, the construction is rather difficult due to complex geology on construction site, deeper diaphragm wall, using profile steel joints and hoisting relative heavy single width reinforcing cage. The construction quality of diaphragm wall has been ensured and the surrounding environment has been protected by optimization of diaphragm wall construction technology and by adoption of embedded grouting pipe, etc.