城市狭窄环境下深基坑工程的设计与监测分析

Design and Analysis of Monitoring of Deep Excavation in Narrow Environment of City

上海华山医院基坑周边建筑密集、管线众多,环境保护要求很高,文章详细介绍了该基坑工程的支护设计过程,包括总体设计方案、"两墙合一"地下连续墙承重设计、基坑实施对周围环境的保护措施;并对主要的监测结果作了分析。该基坑工程已顺利完成,设计方案的实施有效地保护了基坑周边的敏感环境。

The foundation pit of the Shanghai Huashan Hospital is surrounded by densely located buildings and lots of pipelines. Deformation control of the excavation is very strict as many underground utilizties such as telephone, gas and drainage pipeline are distributed around the excavated site. This paper introduces the design process of the supporting system of the excavation including the overall design scheme, the design of the diaphragm wall used as retaining wall as well as the outside of the basement, the horizontal strut, and protection measures of the surrounding environment. Furthermore, the main monitoring results are also analyzed. The successful accomplishment of the foundation pit has effectively protected the surrounding environment.