The Trend Forecast and Analysis of Bearing Capacity of Dome Structure

In order to study the mechanical behavior of the structure of steel arch-shell under concentrated force,this paper introduces a flexible non-moment theory,and analyzes the hemispheric shell structure.And at the same level loads,the shell thickness and other factors change exert influence on the Mises stress of the internal structure and make prediction for its trends.The results show that at the same level loads,with the increase in the thickness of the shell,the largest Mises stress will decrease,and the change of the radius of curvature spherical shell structure also can have a considerable impact on the bearing capacity.Steel arch shell thickness and the changes of curvature radius have an influence on the structural bearing capacity and the structure displacement.After the adoption of curve fitting,we can predict more accurately of the development trend of the structure bearing capacity,and thus can provide references for the arch-shell dome structure designers.