在文献[1]中,得到了简支圆管在重力作用下的应力状态。其解法分为两步:第一步,得到简支圆柱在自重下的应力状态;第二步,利用“凑试法”将第一步所得的解推广到圆管,这第二步是比较困难的。本文不利用“凑试法”,而是将悬臂圆管一端受力的解和自重作用下的解相叠加,然后偶开拓,即可得到简支圆管在重力作用下的应力状态。设悬臂圆管的内半径为r,外半径为R,长为l,大 In [1], the stress state of simply-supported circular pipe under gravity is obtained. The solution is divided into two steps: the first step is to obtain the stress state of the simply supported cylinder under self-weight; the second step is to extend the solution obtained in the first step to the circular tube by using the “test-and-test method”. The second step is to compare difficult. In this paper, we do not use “try to get together” method. Instead, we add the solutions under the action of one end of the cantilever tube and the solution under self-weight, and then even exploit it to get the stress state of simply supported circular pipe under gravity. Set the inner diameter of cantilever pipe r, the outer radius of R, length l, large