(1 四川建筑职业技术学院土木系  德阳 618000； 2 四川大学建筑与环境学院  成都 610065)
【提要】  采用VC++编制了全过程的非线性数值分析程序计算厚壁T形、L形柱在992种工况下的截面曲率延性比，分析了影响厚壁异形柱截面延性最不利荷载角的因素，得出了厚壁异形柱的最不利荷载角。计算结果表明，程序的计算精度较高，厚壁异形柱的最不利荷载角与构件的轴压比和柱肢的长厚比有较大的关系，而混凝土强度等级和钢筋的直径等对其影响较小。最不利荷载角的取值差别较大。
【关键词】  非线性分析  厚壁  异形柱  最不利荷载角
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