Analysis Of The Dynamic Stability Of Steel Arch Gate.

The stability of the steel structure is an important factor leading to the structuredestruction. In recent years, though there are some useful reseaching result, there arestill some questions about the dynamic behavior of radial gates . In our country, manyscholars have reseached the dynamic behavior of radial gate from the 1960. Theyfound out though there were many factors effecting the destruction of the dynamicbehavior of radial gate,there were two same characterises.One is the destruction of thearms,the other is the destruction under the dynamic load. Now, though there are someuseful reseaching result, there are still some imperfect aspects in it. Because thereason effecting dynamic behavior of radial gate is so complex ,such as the massand the stiffness ratio of the gate, order frequencies, exciting forcefrequencies,fluid-solid interaction, and so on, and these factor will effect thedynamic behavior of radial gates ,we shound reseach the dynamic behavior of radialgates deeply. The following is the main research procedures and achievements: 1. Using the static mechanics method,finite units method to analyze the stability of the three kinds plane steel frame,establishing the calculating models of the stability of the whole frame structure. 2. Calculating the dynamic behavior of the coloum of the radial gate ,on the basic of the static analyze of the steel frame, considering the restriction of the end of the column of the main steel frame , analyze the stability of the two ended hinged joint coloum under periodical dynamic, under periodical dynamic and one ended having bend-square by using the static mechanics method. 3. Analyzed the dynamic stability of the plane steel frame of the radial gates.It reports the effect of water to the order frequencies of frame,and gained the relationship between stiffness ratio of the gate and the plane steel frame of the radial gate.