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采用LUSAS程序进行有限元分析,研究了横向弯曲波折腹板组合板梁的极限承载力和力学性能,分析了腹板开孔面积对该梁承载力和力学性能的影响。影响该梁力学性能的主要参数有:腹板长细比d/t、腹板长宽比b/d、波折宽深比bh/h及孔尺寸,分析这些参数对结构倒塌性能的影响。分析得出了组合板梁的极限承载力、破坏机理及荷载-位移曲线,并列出了一些典型结果。提出了该梁剪切承载力的近似计算方法,并利用有限元结果,验证该方法的准确性。
The LUSAS program was used to carry out the finite element analysis. The ultimate bearing capacity and the mechanical property of the transverse bending kinked composite plate beam were studied. The influence of web hole area on the bearing capacity and mechanical properties of the beam was analyzed. The main parameters affecting the mechanical properties of the beam are: web slenderness ratio d / t, web aspect ratio b / d, wave width to depth ratio bh / h and pore size, and the influence of these parameters on the structural collapse. The ultimate bearing capacity, failure mechanism and load - displacement curve of the composite plate beam are analyzed and some typical results are listed. The approximate calculation method of the shear capacity of the beam is put forward and the accuracy of the method is verified by the finite element method.