【摘要】 塑性铰线分析模型已成功用于估计由弦杆表面屈服控制的各种管节点的强度;然而弦杆自身的轴向压力对节点承载力的影响仍然是用一个经验折减系数来考虑的.为了计算在轴向压力作用下沿倾斜塑性铰线的极限弯矩,研究者们提出了各种理论模型.该文对这些模型进行了分析和对比.结果表明,采用简化假设的阶梯形塑性铰线模型用于评价T形方管节点的强度与试验结果和有限元计算结果符合得最好.更多还原

【Abstract】 The plastic hinge line analysis model has proved successful in predicting the strength of different structural hollow section(SHS) joints due to yielding of the connecting face of the chord.A reduction factor is used to consider the influence of axial force in the chord.Various methods,which take axial force in the chord into account,used for the calculation of ultimate moment along an oblique plastic hinge line have been investigated and compared.The estimations from the stepped plastic hinge line model using simplified assumptions are in good agreement with the results from both laboratory tests and present finite element analyses for T-type rectangular hollow section(RHS) joints.更多还原