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地下连续墙下设置支腿,可解决其插入深度或入岩深度过长引起的施工困难和成本提高问题,性价比高。针对带支腿地下连续墙结构进行了三维有限元分析和研究,并将成果应用于杭州黄龙饭店新建工程中。在地下墙不入基岩且坑底插入深度仅2～4m时,在地下连续墙墙幅底端设置支腿,支腿承担部分水平荷载,同时满足围护结构插入深度要求,取得了成功。带支腿地下连续墙的成功应用,大大降低了施工难度和工程造价,经济效益显著。
Set up under the continuous diaphragm wall legs, to solve its insertion depth or into the rock depth caused by construction difficulties and cost increases, cost-effective. Three-dimensional finite element analysis and research are carried out for the continuous diaphragm wall with outriggers. The results are applied to the new project of Huanglong Hotel in Hangzhou. When the underground wall does not enter the bedrock and the depth of pit insertion is only 2 ~ 4m, the leg is installed at the bottom of continuous wall wall, and the leg is partially loaded horizontally. The successful application of the continuous diaphragm wall with outriggers has greatly reduced the construction difficulty and project cost, and has obvious economic benefits.