结构工程师Issue(6)：33-40,8.
基于纤维模型的火后钢筋混凝土框架构件性能模拟
Simulation of Post-fire Structural Performance of Reinforced Concrete Framesased on the Fiber Beam Model
摘要
Abstract
A frame structure with damaged and undamaged members was modelled by assembling the rein-forced concrete beam, column, floor members. Material properties of the damaged members after high temper-ature were considered. By using the convenient and fast modeling function of SAP2000, beams and columns were modeled by fiber elements and the layered shell elements were used to model the floor. This model was then imported into the ABAQUS for nonlinear analysis. It was found that the load-displacement curves and strain curves are in good agreement with experiment results. Based on this method, further investigations were made to compare the strain curves and load displacement curves of cantilever beams and frame beams after fire. The results shows that the bearing capacity and stiffness of the cantilever beam increase more than those of the frame beam with the flange contributions.关键词
纤维模型/钢筋混凝土框架/非线性有限元分析/高温后力学试验/程序开发Key words
fiber model/reinforced concrete frame/nonlinear finite element analysis/mechanical test after high temperature/program development引用本文复制引用
杨旭,陆洲导,余江滔,刘书雷..基于纤维模型的火后钢筋混凝土框架构件性能模拟[J].结构工程师,2014,(6):33-40,8.基金项目
国家自然科学基金(51008235)(51378397) （51008235）
