一、前言 江南造船厂3号船坞是于1934年建造的万H屯级干船坞,其主要尺度和结构型式是:坞的有效长度192.0米、有效宽度23.5米(坞口)和21.4米(坞室)、深度8.4米;坞口的坞墩系拉森Ⅳ型钢板桩格形结构(钢板桩长18.0米),顶端用拉杆和撑杆联成整体,其内部填土,平面尺寸11.0×11.0 I. Introduction Jiangnan Shipyard No.3 Dockyard is a 10,000-Htun-level dry dock constructed in 1934. Its main scale and structure are: the effective length of the dock is 192.0 meters, the effective width is 23.5 meters (dock mouth) and 21.4 meters Room), the depth of 8.4 meters; dock docking dock Larsen Ⅳ steel sheet pile lattice structure (steel sheet pile length 18.0 meters), the top tie rod and strut together into the whole, its internal fill, the plane size 11.0 × 11.0