冷弯薄壁C型钢梁柱节点弯矩-转角数学模型

MATHEMATICAL MODEL OF MOMENT ROTATION FOR COLD-FORMED THIN-WALLED C BEAM COLUMN JOINTS

结合现有的研究成果和国内外常用的两种弯矩-转角的数学模型(线性模型和多项式模型),对冷弯薄壁C型钢梁柱节点的弯矩-转角曲线分别进行模拟,以此找出冷弯薄壁C型钢梁柱节点极限弯矩承载力和相对转角之间的关系。根据两种弯矩-转角数学模型,与试验得到的弯矩-转角曲线进行对比,确定出最为符合冷弯薄壁C型半刚性钢梁柱节点的弯矩-转角模拟曲线。

Combined with the existing research results about two common mathematical models （linear and polynomial models） commonly used both at domestic and abroad, the bending moment curve of the cold bending thin-walled C steel beam column joints is simulated to find out the relationship be- tween the ultimate bending moment bearing capacity and the relative angle of the cold bending thin- walled C steel beam column joints. According to the two moment rotation angle mathematical model, the bending moment curve is compared with the bending moment curve obtained by the test, and the bending moment angle simulation curve which is most consistent with the cold bending thin-walled C type semi-rigid beam column joints is determined.