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河北某科技研发中心工程总建筑面积为13.6万m2,地上建筑面积9.7万m2,地下建筑面积3.9万m2。本工程地下1层,主楼地上9层,地下室功能为局部人防、车库及设备用房,地上建筑为办公楼。该工程主楼为筏形基础,地下室人防部分为独立基础,基底标高为-6.500～-9.950m,地下水位在-8.960m,但8个基坑在水位线以下0.99m。基坑土质为砂卵石层,渗透系数大于360m/d,工期要求紧,且水下部分设计要求做自粘高聚物改性沥青防水卷材。
Hebei a technology research and development center project total construction area of 136000 m2, ground construction area of 97000 m2, underground construction area of 39000 m2. The ground floor of the project, the main building on the ground floor 9, basement functions for the local air defense, garage and equipment room, the ground for the office building. The main building of the project is a raft foundation, and the civil defense part of the basement is an independent foundation. The elevation of the basement is -6.500 ~ -9.950m and the groundwater level is -8.960m. However, eight foundation pit are 0.99m below the water level. The soil of the foundation pit is sand-pebble layer, the permeability coefficient is more than 360m / d, the construction period is tight, and the underwater part is designed to be self-adhesive polymer modified bitumen membrane.