基于柔度法纤维梁柱单元的钢筋混凝土柱地震损伤分析  

Analysis of Seismic Damage of RC Columns Based on Flexibility-Based Fiber Beam-Column Element

作　　者：高营 郑亮 王万月 GAO Ying;ZHENG Liang;WANG Wan-yue(School of Environment and Safety Engineering,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学环境与安全工程学院,太原030051

出　　处：《科学技术与工程》2025年第2期721-728,共8页Science Technology and Engineering

基　　金：国家自然科学基金(52108481);山西省自然科学基金面上项目(202203021221115);中北大学毁伤技术重点学科实验室开放研究基金(DXMBJJ2023-02,DXMBJJ2022-01)。

摘　　要：为高效准确地模拟钢筋混凝土柱的地震损伤过程,将混凝土和钢筋单轴损伤本构模型与基于柔度法的纤维梁柱单元模型相结合,建立钢筋混凝土构件地震损伤分析方法。对钢筋混凝土柱的拟静力试验进行模拟分析,发现模拟模型可以较好地模拟构件的刚度和承载力退化过程。对钢筋混凝土柱的双向加载振动台试验进行模拟分析,结果表明模拟模型可以较好地模拟构件的非线性动力行为和损伤分布情况。此外,所建立模型可以有效模拟构件的地震损伤演化过程,描述构件的薄弱部位,且具有较高计算效率和求解精度,可用于地震作用下建筑和桥梁结构倒塌过程分析。In order to simulate the seismic damage process of RC(reinforced concrete)columns precisely and effectively,the method of seismic damage analysis of reinforced concrete members was established by combining the uniaxial damage constitutive model of concrete and steel bar with the flexibility-based fiber beam-column element model.The quasi-static test of reinforced concrete column was simulated and analyzed.It is found that the simulation model can simulate the degradation process of stiffness and bearing capacity of component with good accuracy.The shaking table test of reinforced concrete column under biaxial loading was simulated and analyzed.The results show that the simulation model can simulate the nonlinear dynamic behavior and damage distribution of component with good accuracy.Furthermore,the established model can effectively simulate the evolution process of seismic damage of components,and describe weak parts of components,and has high computational efficiency and solution accuracy,which can be used to analyze the collapse process of buildings and bridge structures under earthquake action.

关 键 词：钢筋混凝土柱 纤维梁柱单元 损伤本构模型 损伤分析 地震作用 

分 类 号：TU375.3[建筑科学—结构工程]