在工程的早期设计阶段,需要选择闸门的型式及其估算闸门制作、运输与安装费用。闸门重量不仅直接影响启闭设备的容量大小,而且也是估算最终费用的基本资料。确定闸门重量是一个相当复杂的问题,一般说来,先需要计算水力、各部件的荷载、工作应力、螺栓与焊接连接件、支撑件等,然后才能求得闸门重量。这样一来,计算工作量 In the early design phase of the project, the type of gate and its gate-making, shipping and installation costs were chosen. Gate weight not only directly affects the size of the opening and closing equipment capacity, but also to estimate the final cost of basic information. Determining the weight of a gate is a rather complex issue. Generally speaking, it first needs to calculate the hydraulic force, the load of each component, the working stress, the bolt and the welded connection, the support and so on, and then the gate weight can be obtained. In this way, the workload is calculated