论文部分内容阅读
基于屈服线和冲剪破坏模型,对矩形管-管节点和板-管节点发生这2种破坏模式的支主管宽度比β适用范围进行理论分析,探讨CIDECT规范中给出的支主管宽度比适用范围的合理性,并在此基础上合理考虑沿支管周长刚度变化,对主管可能发生屈服线和冲剪破坏的区域进行分析,给出屈服线和冲剪综合破坏的承载力计算方法。将所得公式的计算结果与试验结果进行对比,并将其与CIDECT规范计算公式进行对比分析。结果表明:该建议公式计算值与试验值吻合较好;β<0.85时,CIDECT规范公式低估了节点承载能力,而0.85<β<1-1/γ(2γ为主管宽厚比)时,CIDECT规范公式高估了节点承载能力。
Based on the yield line and punching shear failure models, the theoretical analysis of the applicability of these two failure mode branch pipe width ratios to the rectangular tube-tube joint and the plate-tube joint is theoretically analyzed, and the branch width ratio given in the CIDECT specification is applied Based on this, the variation of perimeter rigidity along the branch pipe is reasonably considered, and the area of charge line and punching shear damage that may occur to the supervisor is analyzed. The bearing capacity calculation method of yield line and punching shear failure is given. Comparing the calculated result of the formula with the test result, and comparing with the calculation formula of CIDECT specification. The results show that: the calculated value of the proposed formula is in good agreement with the experimental value; when β <0.85, the CIDECT specification formula underestimates the node carrying capacity, and when 0.85 <β <1-1 / γ (2γ is the dominant aspect ratio) The formula overestimates the node carrying capacity.