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前言 1973年以来,沉管灌注桩桩基逐渐在港口土建工程中被广泛采用。据广州黄浦、湛江、汕头、海口、三亚等港不完全统计,仓库、栈桥、桥、办公楼、修理车间、宿舍、食堂等建筑约二十多万平方米,打桩万余条,积累了一定的设计施工经验。一、沉管灌注桩设计施工情况简介 1.地质情况 (1) 三亚港:18+18米跨钢筋混凝土排架结构仓库。原设计在冲填砂土作天然地基,由于后将港池挖泥与砂一齐吹填,造成上部填土质量很差,采用沉管灌注桩桩基。在标高-7米以下粗砂和黄色亚粘土为较好的持力层。 (2) 湛江港三区磷矿钢筋混凝土框架栈桥:因原地面上却填土密实度差,栈桥沉降控制较严,采用沉管灌注桩。持力层位于物理力学性质较好的亚粘土层。
Foreword Since 1973, the sinking pipe pile foundation gradually been widely used in the port civil engineering. According to incomplete statistics such as Huangpu, Zhanjiang, Shantou, Haikou and Sanya in Guangzhou, more than 200,000 square meters of storages, piling, warehouses, bridges, office buildings, repair shops, dormitories, Design and construction experience. First, the design of pipe sinking pile profile Brief Introduction 1 Geological conditions (1) Sanya Harbor: 18 + 18 meters across the reinforced concrete rack structure warehouse. The original design of the fill sand as a natural foundation, due to the dredging basin and sand together after the filling, resulting in poor quality of the upper fill, the use of pipe sinking pile. Under the level of -7 meters below the coarse sand and yellow clay for the better holding layer. (2) Zhanjiang Port three phosphate rock reinforced concrete frame trestle: because the original ground, but the filling density is poor, trestle settlement control more stringent, the use of pipe sinking pile. Holding layer is located in the physical and mechanical properties of the sub-clay layer.