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结合上海长风11号西北地块项目的工程实践,详细介绍了深基坑工程在超大面积、基础标高深浅不一、落差起伏大、形状不规则等复杂情况下,通过采用多种形式的支护体系,即将水泥土重力式围护墙(重力坝)、钻孔灌注桩、钢支撑等不同方式的支护形式相结合,同时配合科学合理的降水技术及土方开挖方案,从而保证了深基坑的施工安全,并取得了较高的经济效益和安全效益。
Combined with the engineering practice of Northwest Changfeng No. 11 block project in Shanghai, this paper introduces in detail the deep foundation pit project under the complicated conditions of large area, different base elevation and shades, big fluctuation and irregular shape, The protection system, that is to say, combining the different forms of supporting forms such as cement-soil gravity retaining walls (gravity dam), bored piles and steel supports and the like, cooperating with scientific and reasonable precipitation techniques and earth excavation programs to ensure deep Construction of foundation pit safety, and achieved high economic and security benefits.