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本文提出一种改良的网架节点型式一空间板节点。现行规范中板节点的计算方法多是依据强度条件得出的,而当节点板在轴压作用下,可能在达到屈服强度以前就发生整体失稳,因此有必要对板节点的受力性能进行深入分析,提出相应节点的计算方法。本文采用有限元软件ABAQUS建立板节点数值模拟模型,通过变参数分析考察了节点板厚度和无支长度等因素对节点板受压性能的影响,并将结果与现行规范计算值进行对比分析,提出了单面连接节点板极限受压承载力的计算方法,并对其适用性进行了验证。
This paper presents a modified grid node type a space board node. The calculation of the mid-plate joints in the current practice is mostly based on the strength conditions. However, under the axial compression of the joint plates, the overall instability may occur before the yield strength is reached. Therefore, it is necessary to conduct the force-bearing performance of the plate joints In-depth analysis, put forward the calculation method of the corresponding node. In this paper, the finite element software ABAQUS is used to establish the numerical simulation model of plate and plate, and the influence of the factors such as the thickness of the plate and the unsupported length on the compression performance of the gusset plate is investigated through variable parameter analysis. The results are contrasted with the current calculated values. The calculation method of the ultimate compressive bearing capacity of the single-sided connected gusset plate is verified and its applicability is verified.