间隙销支座用作三向不动铰应用于支座所在平面为圆形的球面网壳，存在较大的结构安全隐患。
The structure may be unsafe when clearance pin connections are adopted as three directional hinge support system for spherical lattice shells.
马迹塘水电站为我国首座贯流式电站，大坝23孔泄洪闸没有设置检修门，工作弧门常年挡水而不能做启闭检修调试，出现门体锈蚀、止水撕裂、支铰发卡等严重危及泄洪闸安全运行的现象。
Majitang Hydropower Station is the first tubular hydropower station in China, there are no emergency gate set ting in23spillway gates, so those working radial gates can not be tested and repaired.
为了保证设计安全，分析时采用弹性支座和固定铰支座形式，分别进行了特征值以及整体稳定分析。
The design of the shell with two bearings which were fixed hinge bearing and flexible hinge bearing was introduced. The process of the stability analysis and the eigenvalue analysis were given.
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