倒三角形桁架组合梁负弯矩区滑移性能有限元分析

A Finite Element Analysis of Slip Effect of Inverted Triangle Truss Composite Beam Under Negative Bending Moment

倒三角形桁架组合梁通过上弦杆焊接的开孔板连接件与混凝土翼板连成整体。利用Abaqus有限元软件,分析了钢-混凝土组合梁在负弯矩下的滑移效应,并通过改变混凝土翼板的宽度和长度进行对比分析。分析结果表明:滑移在加载点处接近为0,最大值并不出现在梁端;混凝土翼板长度对滑移的影响大于宽度对滑移的影响。

Inverted triangle truss composite beams connect the upper chord truss composite beams and concrete through the perforated plate connectors.Slip effect of steel-concrete composite beans under negative bending moment was analyzed via the finite element softwar,Abaqus.A comparative analysis was carried out by changing the width and length of the concrete flange.The results showed slip at the loading point is close to 0,and the maximum does not appear at the beam end.The length of the concrete wing has greater effect on slip that the width does.