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(一)工程概况江苏省靖江县夏仕港船闸系该县重要的通航建筑物。闸首底板是钢筋混凝土双缝分离式铰接结构。船闸承受双向水头作用,采用三角屏形闸门,根据门缝输水试验与其它已建成的船闸三角形门使用情况,设置了输水洞,因而对地基的强度与变形要求较高。可是闸基却为长江近代沉积的粉细砂层,表层还含有质地软塑的淤泥,承载力较低(N_(63.5)=4～9击),经研究,采用桩基础,选用预制0.25×0.25×5.0m的钢筋混凝土方桩。为满足地基土渗
(I) Project Overview The summer ship lock of Jingshi County in Jiangsu Province is an important navigation building in the county. The brake head floor is a reinforced concrete double seam separated hinge structure. The ship lock is subject to two-way water heads. The triangular screen gate is used. According to the water transmission test of the door joints and the use of other triangular gates of the ship locks, the water conveyance holes are set. Therefore, the requirements for strength and deformation of the foundation are high. However, the sluice base is a fine sand layer deposited in the Yangtze River in recent years, and the surface layer also contains a soft mud with a low bearing capacity (N_(63.5)=4 to 9 hits). After research, the pile foundation was used and the prefabricated 0.25× was selected. 0.25 × 5.0m reinforced concrete square pile. To meet the foundation soil seepage