地下连续墙成槽过程槽壁土体变形测试  

Measurement for Soil Deformation During the Diaphragm Wall Trench Construction

作　　者：颜荣华[1] 杜明礼 朱明[1] 

机构地区：[1]江苏南京地质工程勘察院,江苏南京210041 [2]江苏晟耀岩土工程有限公司,江苏徐州221004

出　　处：《岩土工程技术》2016年第2期74-77,共4页Geotechnical Engineering Technique

摘　　要：为了分析地下连续墙成槽施工过程中对槽壁周边土体变形的影响程度,在南京河西地区某基坑工程的地下连续墙正式施工前进行了墙厚1.2 m、宽度4.5 m、深度61.0 m的成槽试验。结果表明,当成槽机向下开挖时,土体在不同深度处出现不同程度的向坑外的位移现象,部分监测数据显示为负值。在成槽施工完成后,水平位移变化出现缓慢回弹的趋势,并在成槽后的两天时间内变化速率渐渐变小。单幅地下连续墙成槽过程中槽壁周边土体的变形对环境影响不大。In order to analyze the influence of soil deformation surrounding the trench of diaphragm wall during the construction period, the diaphragm wall trench, thickness 1.2 m, width 4. 5 m and depth 61.0 m, was tested before the retaining wall of foundation pit constructed in Nanjing Hexi area. The results show that soil deformation in different depths appeared different displacement degrees when the trench was excavated, and part data of monitoring were negative The soil deformation surrounding the trench had a little im- pact on the environment, when the single trench of the diaphragm wall was constructed.

关 键 词：地下连续墙 槽壁土体变形 环境影响 

分 类 号：TU473.2[建筑科学—结构工程]