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(1 四川建筑職業(yè)技術(shù)學(xué)院土木系  德陽 618000； 2 四川大學(xué)建筑與環(huán)境學(xué)院  成都 610065)
【提要】  采用VC++編制了全過程的非線性數(shù)值分析程序計(jì)算厚壁T形、L形柱在992種工況下的截面曲率延性比，分析了影響厚壁異形柱截面延性最不利荷載角的因素，得出了厚壁異形柱的最不利荷載角。計(jì)算結(jié)果表明，程序的計(jì)算精度較高，厚壁異形柱的最不利荷載角與構(gòu)件的軸壓比和柱肢的長厚比有較大的關(guān)系，而混凝土強(qiáng)度等級和鋼筋的直徑等對其影響較小。最不利荷載角的取值差別較大。
【關(guān)鍵詞】  非線性分析  厚壁  異形柱  最不利荷載角
The Most Unfavorable Loading Angle Analysis of RC Specialshaped Columns with Thick Limbs/Chen Kaifeng1,Zhang Xinpei2,Lei Changxiang1(1 Sichuan Architecture Professional Technology College,Deyang 618000,China; 2 Sichuan University,Chengdu 610065,China)
Abstract:The nonlinear analysis program is edited to calculate the ration of curvature to ductility of T and L shaped columns under 992 loading conditions using VC++ language.The affected factors of the unfavorable loading angle on section ductility are analyzed,and the most unfavorable  angles are got.The results show that the calculation program has highly precision and the most unfavorable angle has much relationship with the axial compression load and ratio of length to thick of column limbs,while the concrete strength and diameter of bars have little influence on it.The values of the most unfavorable loading angles are largely different.
Keywords:nonlinear analysis；thick limb;specialshaped column;most unfavorable loading angle