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本文采用ABAQUS建立了木构件钢填板预应力套管螺栓连接节点在顺纹和横纹受力下的有限元分析模型。通过将有限元分析得到的节点极限承载力、极限变形和初始刚度与试验结果进行对比,发现有限元值和试验值相差均在10%以内,从而验证了有限元模型的合理性。基于有限元模型,本文分析了连接中管板摩擦系数、螺杆预应力值以及钢管壁厚对节点荷载变形曲线的影响,具体讨论了上述参数对节点极限承载力、极限变形、极限抗滑移承载力的影响,还对达到极限承载力时节点内部的力分配进行了参数分析。通过参数分析,对节点的合理设计提出了建议。
In this paper, ABAQUS was used to establish the finite element model of prestressed casing joints of steel-framed steel-filled prefabricated casing bolts under parallel and transverse load. By comparing the ultimate bearing capacity, ultimate deformation and initial stiffness of the joint obtained by finite element analysis with the experimental results, it is found that the difference between the finite element value and the experimental value is within 10%, which verifies the rationality of the finite element model. Based on the finite element model, the paper analyzes the influence of the friction coefficient, the screw prestress value and the wall thickness of the pipe on the deformation curve of the joint under the connection. The effects of the above parameters on the ultimate bearing capacity, ultimate deformation, ultimate anti-slip load Force, but also to the ultimate bearing capacity of the nodes within the force distribution parameter analysis. Through parameter analysis, the reasonable design of the node is proposed.