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利用主体结构进行拆换撑的深基坑工程实践 被引量:3

Deep Foundation Pit Engineering Practice of Removing and Changing Bracing With Permanent Structure
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摘要 以武汉长江中心深基坑工程为依托,介绍了主体结构进行拆换撑的方式,利用楼板直接换撑和利用钢管传递侧向围压到楼板进行换撑,可以有效控制支护结构侧向变形。分析了该支护体系的变形特征,发现拆撑过程中支护结构变形相较于基坑开挖阶段位移变化更大,开挖时地连墙最大位移出现在开挖面以上2m左右,拆撑阶段地连墙最大位移出现在拆撑面附近。分析了主体结构跨数与侧向变形的关系,结果表明,分区流水施工条件下,优先施工临地连墙5跨主体结构可以有效控制基坑侧向变形。
作者 李健强 杨勋 张松波 程谦 王帅 谭江蜀 LI Jian-qiang;YANG Xun;ZHANG Song-bo;CHENG Qian;WANG Shuai;TAN Jiang-shu
出处 《建筑机械化》 2023年第1期54-56,共3页 Construction Mechanization
基金 中建三局集团有限公司工程总承包公司课题“临江超大体量超高层建筑建造关键技术研究与应用”(CSCEC3Z-2021-09)。
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