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一、地基概况及确定预压经过杜家台闸位于湖北省沔阳县仙桃镇附近汉江下游的右岸,用以分泄汉江洪水。该闸全长412公尺,分30孔,闸高达15公尺(自工作桥桥面至底板),水头近9.5公尺;设计分洪量4,000秒公方;系钢筋混凝土结构装有弧形钢质闸门的永久建筑物。闸址位置系根据水流、地基等条件,综合研究选定于汉江弯道起点,跨堤建闸。(见图1、图2及图3)
First, the basic situation of the foundation and preloading determination After Dujiaotai Gate is located on the right bank of the lower reaches of the Han River near Xiantao Town, Xingyang County, Hubei Province, it is used to divert Han River flood. The gate length of 412 meters, 30 holes, gate up to 15 meters (from the bridge deck to the floor), the head of nearly 9.5 meters; design flood diversion volume of 4,000 seconds to the public; Department of reinforced concrete structure equipped with arc-shaped steel The permanent gate of the quality of the building. The location of the gate is based on the conditions of water flow, foundation and other factors. The comprehensive study selected the starting point of the Hanjiang River bend and the gate across the embankment. (See Figure 1, Figure 2 and Figure 3)