临近地铁深基坑双排桩+支撑、锚杆支护设计  

Design of a Double Row Soldier Pile with Ground Anchor Supporting a Deep Excavation Near a Subway

作　　者：姚国鹏 吴超 YAO Guopeng;WU Chao(Beijing Geotechnical Engineering Survey Institute Co.Ltd.,Beijing 100086;Beijing Urban Construction Survey,Design and Research Institute Co.Ltd.,Beijing 100029)

机构地区：[1]北京岩土工程勘察院有限公司,北京100086 [2]北京市城建勘测设计研究院有限责任公司,北京100029

出　　处：《土工基础》2023年第1期14-17,共4页Soil Engineering and Foundation

摘　　要：深基坑工程是一个系统工程,基坑支护的设计、施工不仅与工程水文地质有关,还与基坑周边环境、变形限制要求、重要性等级等有关,随着城市地下空间和高层建筑建设快速发展,临近密集建筑的深基坑工程也越来越多。以某临近地铁深基坑工程为对象,分析工程地质及周边环境情况,选取了双排桩与锚杆、钢支撑组合的支护形式,结合设计结果对比施工时位移监测数据,证明了采取的基坑支护形式的有效性,希望可为周边环境复杂、变形限制要求高的深基坑工程设计提供借鉴。The deep excavation engineering is a systematic engineering. The design and construction of the excavation support are not only related to the hydrogeology engineering, but also related to the surrounding environment of the excavation, the requirements of deformation limits, the importance level, and other factors. At the current stage, with the rapid development of the urban underground space and high-raised building construction, there are more and more deep excavation projects adjacent to these already densely located buildings. Many researchers and engineering practitioners have completed much research on the control of the deformation in the support structures, the surrounding strata displacement and the adjacent building deformation. Valuable experience has been accumulated throughout these projects. In this paper, a deep excavation project near the subway is presented. The engineering geology and surrounding environment of the project are evaluated, and the double row soldier pile wall with ground anchor as well as internal strut support are selected as the excavation supporting structure. The construction monitoring data proved the effectiveness of this type of supporting structure. Which can be used in supporting of the deep excavations with deformation sensitive adjacent structures.

关 键 词：深基坑 支护设计 临近地铁 双排桩 内支撑 

分 类 号：TU473[建筑科学—结构工程]