The Solution to the Destabilizing Critical Load of Circular Double Articulated Arch Under Going Vertical Distributive Load g 0/ cos2θ
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摘要: 在计入轴力对拱弯曲的影响后,建立了圆弧双铰拱在垂直分布荷载g0/cos2θ作用下的总势能.按Ritz法求得在该荷载作用下具有足够工程精度的拱失稳临界力的第4次近似值,并与圆弧双铰拱受径向均布荷载作用的情况作了比较,得到一些可供参考的结果.
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关键词:
- 圆弧双铰拱 /
- 垂直分布荷载g0/cos2θ /
- 失稳临界力
Abstract: In this paper,after taking the effect of axis force on bending into consideration,the general poteneial energy for the circlular double articulated arch is established undergoing vertical distributive load g0/cos2θ.With sufficient engineering precision,the fourth approximations to the destablizing critical load of the arch under this load are obtained by Ritz method.The approximations to the critical load table are listed for various center angles of arch,and are contrasted with the critical load circular arch undergoing radial uniform load.Some reference results have been obtained. -
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