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将内时思想方法用于杆件本构研究中，建立截面内时本构模型，并将其与杆件有限单元法相结合，建立一种新型杆件恢复力模型——杆件内时模型，重点讨论杆件偏压条件下截面综合内时的定义及杆件内时模型对该问题的适用性．单柱偏压算例表明杆件内时模型具有以下特点：加、卸载本构方程统一，编程简单；弹性到塑性之间逐渐过渡；考虑弹塑性沿杆长的分布，计算得到的分布规律更符合实际；处理复合受力问题具有优越性．对于型钢柱的单、双偏压问题，采用本文的杆件内时模型进行弹塑性分析是可行的；对于钢筋混凝土柱偏压问题，本文模型可以近似用于小偏压，为使模型更加符合实际，应进一步寻找能够反映大、小偏压特性的截面内时模型．
The inner-time thinking method is used in the study of the constitutive structure of the rod. An internal-constitutive model of the cross-section is established and combined with the finite element method of the rod to establish a new type of rod-restoring force model-the internal model of the rod. Focuses on the definition of cross-section integration under bar bias conditions and the applicability of the internal-time model for this problem. The single-column biasing example shows that the model has the following characteristics: the addition and unloading constitutive equations are unified, and the programming is simple; the elastic to plastic transitions gradually; considering the elastoplastic distribution along the length of the rod, the calculated distribution law is more In line with reality; it is superior to deal with composite stress problems. For the single and double bias problems of steel columns, the elasto-plastic analysis is feasible using the model of the rod inner-time model. For the bias of reinforced concrete columns, the model can be approximated for small biases to make the model more consistent. In practice, the cross-section time model that can reflect the large and small bias characteristics should be further searched.