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In this paper, after taking the effect of axis force on bending into consideration, the general potential energy for the circular double articulated arch is established undergoing vertical distributive load g0/cos2θ. With sufficient engineering precision, the fourth approximations to the destabilizing critical load of the arch under t his load are obtained by Ritz method. The approximations to the critical load ta ble 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. 相似文献
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垂直分布荷载下固支圆拱的对称失稳临界力 总被引：2，自引：0，他引：2
按Ritz法求得在垂直分布荷载go／cos^2θ作用下具有足够工程精度的固支圆拱正对称失稳临界力的近似值，得到了一些可供参考的结果． 相似文献
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ｎｔｒｏｄｕｃｔｉｏｎＢｙｃｏｎｔｒａｓｔｔｏｏｔｈｅｒｄｉｓｔｒｉｂｕｔｉｖｅｌｏａｄｉｎｇａｃｔｉｏｎｓ,ｔｈｅｓｔａｂｌｅｐｒｏｂｌｅｍｏｆａｒｃｈｕｎｄｅｒｇｏｉｎｇｖｅｒｔｉｃａｌｄｉｓｔｒｉｂｕｔｉｖｅｌｏａｄｉｎｇａｃｔｉｏｎｉｓｍｏｒ... 相似文献
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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 相似文献
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