Reliability Analysis Of Radial Steel Gate

The theory of structure reliability has gradually been applied to engineering practice and has more been extended in hydraulic and hydroelectric engineering.Reliability and design level for every component of hydraulic constrution will be evaluated by uniform and new measure.As a component of sluicing and lock water constrution,the gate must be evluated with the theory of structure reliability too. Radial steel gate is a kind of structure that has strong space effect,space finite element analysis technique is a modern calculation method ,which can describe the entire work effect of the space structure.By using the Algor FEAS software ,the calculation and analysis of Danjiangkou deep-hole radial steel gate are developed in this paper.The values of displacements and stresses at the gate's crucial points in several load cases are presented. On the basis of reliability theory and the function character of hydraulic steel gate,this paper has essentially researched the distribution and statistics of the random variables of hydraulic steel gate,and on the basis of the intensity calculation of the gate's crucial points by three-dimensional fininte element analysis method,has educed the limit state equation of all kinds of invalidation modes by stress coefficient method,and has obtained the reliability indices of the gate by JC method. Finally,on the basis of the analysis and comparison of the obtained results,the reliability of the gate is elementary estimated. A new method and approach is provided for the evaluation of hydraulic metal structure.