波浪腹板H型钢梁翼缘局部稳定性研究  

Research on Local Buckling Stability Behavior of Flanges of H-shaped Members with Sinusoidal Corrugated Web

作　　者：黄炳生[1] 沙翰宇 

机构地区：[1]南京工业大学土木工程学院,江苏南京211816

出　　处：《应用基础与工程科学学报》2017年第4期816-823,共8页Journal of Basic Science and Engineering

基　　金：南京工业大学青年教师学术基金

摘　　要：依据波浪腹板H型钢梁受压翼缘的局部屈曲特性,同时参考平腹板钢梁受压翼缘局部屈曲的研究方式,运用瑞利-里兹法推导了波浪腹板翼缘局部稳定临界荷载表达式.提出了研究波浪腹板H型钢梁受压翼缘局部屈曲的理论计算模型,此模型将受压翼缘简化为两加载边简支,与波浪腹板相连的非加载边简支,而另一非加载边自由的单向均匀受压板.由ANSYS模拟分析得到了波浪腹板H型钢梁受压翼缘的屈曲模态.对比理论推导表达式计算结果与ANSYS有限元分析结果,发现两者吻合度高,验证了所提表达式的准确有效.同时探讨了翼缘和腹板参数尺寸的变化对翼缘局部稳定临界荷载的影响.According to the local sinusoidal corrugated web,th sinusoidal corrugated webs w buckling behavior of pressed flanges in H-shaped members with e formula of the elastic critical local buckling loads of flanges with as derived via Rayleigh-Ritz method using the research methods of the local stability of flanges of H-shaped members with plane webs as a source of reference. A theoretical model to predict the local buckling behavior of flanges with sinusoidal corrugated web was proposed. The flange was taken as an elastic slab which were simply supported at the two loaded sides and the unloaded side connected to sinusoidal corrugated web, while another unloaded side was free. The buckling modes of pressed flanges in H-shaped members with sinusoidal corrugated webs were simulated by the use of ANSYS. The numerical and theoretical results showed a good agreement with each other, which indicated that the developed theoretical model accurately predicted the local buckling behavior of pressed flanges in H-shaped members. Furthermore, the influences of parameters in sinusoidal corrugated web on the local stability of flange was analyzed.

关 键 词：H型钢梁 波浪腹板 翼缘局部屈曲 临界荷载 有限元 

分 类 号：TU391[建筑科学—结构工程]