An updated parametric hysteretic model for steel tubular members, in which the member compressive buckling is considered, is proposed in this paper. The model can be used for simulating the complex inelastic force-displacement hysteresis behaviour of steel tubular members. Based on the general aspects of hysteretic behaviour and the traditional Marshall model, the modified Marshall model is developed to improve the simulation accuracy, whose control parameters are determined by batch parameter analysis results. For the applicability in multiple hysteresis loop process, the initial member curvature under compression-tension during hysteretic loop process is studied and the computation methods under compression and tension are given individually based on the finite element analysis results and theoretical derivation. On this foundation, the model control parameter correction and axial compression capacity redefined with large initial member curvature during hysteretic loop process are executed in the updated parametric hysteretic model proposed later in this paper. Finally, in addition to the comparison with the finite element results, the rationality and applicability of the proposed model are also verified by several experiments and the good agreement in loop curve trend and hysteretic energy consumption are found between the simulated and experimental results.

本文提出了一种考虑构件压屈曲的更新的钢管构件参数滞回模型。该模型可用于模拟钢管构件复杂的非弹性力-位移滞后行为。基于滞后行为的一般方面和传统的Marshall模型，为了提高仿真精度，提出了改进的Marshall模型，其控制参数由批量参数分析结果确定。针对多滞回线过程的适用性，研究了滞回线过程中压拉初始构件曲率，并根据有限元分析结果和理论推导分别给出了压拉下的计算方法。在此基础上，在本文后面提出的更新的参数化滞后模型中执行在滞后环过程中用大的初始构件曲率重新定义的模型控制参数校正和轴向压缩能力。最后，除了与有限元结果的比较外，还通过多次实验验证了所提模型的合理性和适用性，仿真结果与实验结果在回路曲线趋势和滞回能耗方面具有较好的一致性。