【摘要】 为研究矩形钢管偏心相贯梁柱节点的平面内抗弯性能，完成了节点的平面内抗弯承载性能试验，得到其承载力和破坏模式，并通过有限元参数分析对理论式进行改进，结合回归分析，建立节点平面内抗弯承载力的实用计算式.结果表明，节点的破坏模式为主管翼缘管壁屈服与腹板压屈的组合破坏.加劲肋可有效提高矩形管偏心相贯梁柱节点的抗弯承载力.通过参数分析，得到了梁柱翼缘宽度比、梁截面高度与柱翼缘宽度比、柱截面管壁宽厚比、梁柱截面壁厚比等参数对矩形管偏心相贯梁柱节点承载性能的影响规律，结果表明，增大梁高以及增大柱壁厚对于提高承载力最为有效.最后拟合得到矩形管偏心相贯梁柱节点的承载力计算式，通过和试验结果及数值计算结果的对比，验证了计算式的准确性.更多还原

【Abstract】 To study the in-plane flexural performance of eccentric rectangular RHS beam-column joints, an inplane bending test was carried out on the joints. The in-plane flexural capacity and failure modes of eccentric RHS beam-column joints were presented. The theoretical formula is improved by finite element parametric analysis, and a practical parametric calculation formula of the in-plane bending capacity of joints is established combined with regressive analysis. Results show that the failure mode of the joint is the combination of the yielding of the column flange surface and the buckling of the column web. Stiffeners can effectively improve the in-plane flexural capacity of eccentric RHS beam-column joints. Parametric analysis was carried out based on the numerical model to study the influence of the beam-to-column depth ratio, the beam-to-column depth-to-width ratio, the column width-tothickness ratio, and the beam-to-column thickness ratio on the bearing performance of eccentric RHS beam-column joints. Increasing the beam depth and the column thickness is the most effective way to improve the bearing capacity of the joints. Finally, through numerical fitting, the calculation formula of the in-plane flexural capacity of eccentric RHS beam-column joints was obtained. The accuracy of the calculation formula is verified by comparing experimental results with numerical predictions.更多还原