摘要
深基坑地下连续墙变形是软土基坑设计的重要控制指标。以开挖深度平均达20m的某城市交通隧道深基坑监测为例,分析和讨论基坑开挖过程中地下连续墙的变形规律,得到地下连续墙最大水平变形随基坑开挖深度的变化规律,建立两者之间的定量比例关系。此外,引入国外关于地下连续墙水平变形的预估模型,研究其在本工程的适用性,并通过实测数据对模型中的关键参数进行反演,为类似工程的基坑设计计算提供参考。
Deformation of diaphragm wall is an important indicator for soft soil excavation design. In this paper, the deformation of diaphragm wall in soft soil is investigated by taking the field measurements for a 20m-deep excavation, and thus, relationship between the maximum horizontal deformation of diaphragm wall and excavation depth is obtained. Furthermore, a prediction model applied in foreign countries on the horizontal deformation of diaphragm wall is introduced, and the applicability and its key parameters are investigated herein. The results in the paper can provide a certain reference for the design and calculation for similar excavation projects.
出处
《公路》
北大核心
2015年第2期83-86,共4页
Highway
关键词
软土
深基坑
地下连续墙
水平变形
实测统计
预估模型
soft soil
deep excavation
diaphragm wall
horizontal displacement
measurements statistics
prediction model
