- 摘 要
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(中南建筑設(shè)計院 武漢 430071)
【提要】 介紹了預(yù)應(yīng)力索圓拱結(jié)構(gòu)的穩(wěn)定分析，從圓拱和預(yù)應(yīng)力索的應(yīng)變值出發(fā)，求出兩者的應(yīng)變能。假定拱軸長度不變，得到拱的位移函數(shù)，由駐值原理，可求得預(yù)應(yīng)力索圓拱的歐拉臨界荷載。算例分析表明，方法簡便，概念清楚，可供結(jié)構(gòu)設(shè)計參考。
【關(guān)鍵詞】 預(yù)應(yīng)力 圓拱結(jié)構(gòu) 穩(wěn)定分析
Stability Analysis of Prestressed Cable Circular Arch/Liu Kaiguo(Zhongnan Architecture Design Institute,Wuhan 430071,China)
Abstract:The stability analysis of prestressed cable circular arch is introduced.Based on the strain of the arch and prestressed cable,the strain energy can be gotten.According to the displacement function,the Eulerian critical load can be calculated.Numerical ex
ample is given.The proposed method is clear in conception and convenient in calculation for the arch structure,which can be used in design.
Keywords:prestressed cable; circular arch; stability analysis;design
