基坑内支撑立柱与地下室底板防水节点施工工法_石伟国.pdf

46 7 2015 7 639 Vol.46 No.7 Jul. 2015 Architecture Technology 518000 TU 47 B 1000 4726(2015)07 0639 05 CONSTRUCTION METHODS FOR WATERPROOF NODES OF FOUNDATION PIT INTERNAL SUPPORTING COLUMN AND BASEMENT SLAB Jiangsu Huajian Construction Co., Ltd . 518000 ShenzhenGuangdongChina Abstract:To reduce the influence of dewatering of foundation pit and large area of earth excavation on surrounding buildings and roads, internal support is usually used in the foundation pit of basement. But waterproof treatment among basement slabs is the biggest diffi culty after the internal supporting columns are removed. This construction method combined impervious steel plate and waterproof coiled material together to realize many characteristics, such as strong applicability, low requirements for construction condition, simple and convenient construction and high waterproofi ng performance, etc. After application in several large domestic projects, it was proved that this method has fast construction speed and favorable waterproof effect. No leakage defect was found in a long period of observation. Keywords dewatering of foundation pit; internal supporting column; basement slab; water drainage node 1 1 2 3 a b 1 1 c 2015 02 28 1 1966