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通过杭州黄龙饭店新建工程基坑围护中带支腿地下连续墙的应用实例,阐述了市中心周边环境复杂地段,开挖深度深,坑底基岩面埋藏浅,地下墙不入基岩且坑底插入深度仅2～4 m时,在地下连续墙墙幅底端设置支腿,用支腿承担部分水平荷载,同时满足围护结构插入深度要求的应用技术。该技术大大降低施工难度和工程造价,经济效益显著。
Through the application example of the underground continuous wall with supporting legs in the foundation pit retaining for the newly built project of Huanglong Hotel in Hangzhou, the surrounding environment in the downtown area is expatiated. The excavation depth is deep, the burial depth of the foundation pit foundation surface is shallow, When the depth of pit insertion is only 2 ~ 4 m, the legs are arranged at the bottom of the continuous wall of underground continuous wall, the horizontal load is partly supported by the legs, and the application technology of the depth requirement of the retaining structure is also satisfied. The technology greatly reduces the construction difficulty and project cost, significant economic benefits.