波纹腹板H型钢梁受压翼缘局部稳定理论研究  

Theoretical Research on Local Buckling Stability Behavior of Compression Flanges in H-shaped Members with Corrugated Web

作　　者：朱奇[1] 李国强[2] 

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《佳木斯大学学报（自然科学版）》2014年第3期345-349,共5页Journal of Jiamusi University：Natural Science Edition

摘　　要：提出梯形波纹腹板H型钢梁翼缘局部失稳的理论计算模型,指出波纹腹板对翼缘失稳相当于提供绕腹板轴心线的弹性转动约束作用.根据边界条件假设,采用理论推导得到了翼缘局部弹性屈曲应力的三角级数解,利用有限元分析验证了边界条件假设及理论模型的有效性.指出相比于平腹板,波纹腹板对翼缘具有更强的约束作用.A theory model for local buckling stability behavior of flanges in H -shaped members with trapezoidal corrugated web was proposed .The corrugated web was taken as an elastic rotation restraint to prevent local buckling behavior of the compression flange .Based on the theory , the trigonometric series solution for cal-culating the elastic buckling stress of the compression flanges was developed .Numerical analyses were then per-formed to investigate the validity of the boundary conditions and the proposed theory .Compared with plate web , corrugated web has a stronger restraint on the flange .

关 键 词：梯形波纹腹板 翼缘宽厚比 弹性转动约束 局部屈曲 屈曲应力 

分 类 号：TU357[建筑科学—结构工程]