利用纤维有限元法预测钢管混凝土柱在循环荷载作用下的性能

关于柱在峰值后的循环荷载-位移关系的研究非常关键,这有助于预防结构在地震之后的破坏。提出了一个有效方法,以预测钢管混凝土柱在轴向恒荷载和侧向循环荷载组合作用下的峰值前和峰值后的滞回性能。基于钢管和混凝土的组合作用,利用一个简化的非线性纤维有限元法对材料的均布轴向应力-应变曲线进行了分析。通过与试验结果进行对比,验证了所提方法的准确性。

Prediction of Pre-and Post-Peak Behavior of Concrete-Filled Circular Steel Tube Columns Under Cyclic Loads Using Fiber Element Method

The study of cyclic load-deformation relationships of columns in the post-peak region is essential to prevent the collapse of buildings under earthquake excitation.This paper provides an efficient method to predict the pre-and post-peak hysteretic behavior of concrete-filled circular steel tube columns under the combination of constant axial load and cyclic lateral load.A simplified nonlinear fiber element method is used to investigate uni-axial stress and strain relationship of materials in terms of the co...