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深厚软土地层条件下地铁车站基坑支护体系变形特征及控制研究 被引量:8

RESEARCH ON DEFORMATION CHARACTERISTICS AND CONTROL METHOD FOR FOUNDATION PIT SUPPORT SYSTEM OF SUBWAY STATION UNDER DEEP SOFT SOIL LAYERS
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摘要 深厚软土地层对地铁车站基坑开挖施工可能影响基坑支护体系的安全性,甚至会诱发基坑坍塌等重大工程灾害。根据车站施工监测以及科研监测数据,结合相关规范对支护体系变形机理和控制技术进行分析。结合工程实践及科研分析,提出了增加立柱桩长度、优化地墙方案等控制措施,可有效控制立柱隆起量。研究成果对今后地铁车站工程支护体系的安全性评价及指导现场安全生产具有重要意义。 The foundation pit construction of the subway station in the deep soft soil layers may affect the safety of foundation support system,and even induce heavy engineering disasters such as foundation pit collapse.The deformation mechanism and control technology of the support system are analyzed based on the station construction monitoring date,scientific research monitoring date,and combination with the relevant specifications.Moreover,through integrating engineering practice and scientific research analysis,control measures such as increasing the length of column piles and optimizing the slurry wall scheme are proposed to effectively control the uplift of column piles,which are of great significance for the safety evaluation of later engineering support system in subway station and the guidance of on-site safe operation.
作者 王滔 WANG Tao(Municipal Engineering Co.,Ltd.,China Railway 18th Bureau Group,300000,Tianjin,China)
出处 《建筑技术》 2023年第1期96-99,共4页 Architecture Technology
关键词 深厚软土地层 地铁车站 基坑支护 变形特征 deep soft soil layer subway station foundation pit support deformation characteristics
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