超深 SMW 工法桩在地铁深基坑中的应用及变形控制

文章作者：徐万春 期刊页码：2022年第7期89页

浏览次数：472次

【摘要】SMW 工法桩作为一项城市地铁施工常用的围护结构形式，具有成桩速度快、止水效果好、地层扰动小、型钢可回收、 施工成本低等优势。根据施工特点，对超深 SMW 工法桩在地铁深基坑中的应用进行了研究，通过对开挖各阶段的实际变形与计 算结果对比分析，解决了超深 SMW 工法桩在地铁深基坑开挖过程中的变形问题，对类似超深围护结构施工提供借鉴意义。

【关键词】地铁隧道；SMW 工法桩；深基坑；围护结构

【Abstract】As a common form of retaining structure for urban subway construction, SMW construction method pile has the advantages of fast pile-forming speed, good waterproof effect, small stratum disturbance, recyclable steel, and low construction cost. Therefore, according to the construction characteristics, the application of ultra-deep SMW pile in deep foundation pit of subway is studied. Through the comparative analysis of the actual deformation and calculation results in each stage of excavation, the deformation problem of ultra-deep SMW pile in deep foundation pit excavation of subway is solved, which provides reference for the construction of similar ultra-deep retaining structure.

【Keywords】Subway tunnel; SMW construction method pile; Deep foundation pit; Building envelope

【DOI】10.12334/j.issn.1002-8536.2022.07.029