A composite spring model is proposed to simulate this phenomenon by shifting the location of its critical section.The model is validated by simulating the hysteretic behavior of two column specimens.

• 提出一个组合弹簧模型，以转移临界截面位置的方式考虑这种约束效应，再通过两个柱试件滞回行为的仿真验证了模型的正确性。