仓顶对筒仓计算结果的影响分析

目前在筒仓设计过程中没有一套完整和实用的能考虑边缘效应的内力计算方法,大部分圆形筒仓均按无矩理论计算薄膜内力,并对边缘附近进行内力验算。在设计和研究时,许多学者忽略仓顶对筒仓计算结果的影响。文章采用有限元计算软件ANSYS对筒仓进行模拟分析,结果表明:对桁架梁形式的筒仓,考虑仓顶时能减少仓壁的环向应力和法向位移,但影响幅度不大,故在筒仓设计和分析时可以忽略仓顶对仓壁内力的影响。

Analysis of the effect of silo roof on calculation results of silo

Cylindrical silos are widely used in industry architecture.Because of the lack of complete and practical methods for calculating the internal force in consideration of the edge effect,the film internal force of most silos is calculated according to the non-moment theory,and the internal forces near the edge are checked.During the design and research,many scholars ignore the influence of silo roof on the calculation results of the silo.In this paper,the silo was simulated by using the finite element software ANSYS.The results reveal that the circumferential stress and normal displacement are reduced when taking the silo roof in the form of girder truss into consideration,but its effect is very little.So in regard to the analysis and design of the silo,the influence of silo roof on the internal force of silo wall can be ignored.