湖南大学学报（自然科学版）2016，Vol.43Issue(11)：61-67,7.
爆炸移除钢筋混凝土框架柱抗倒塌性能数值模拟∗
Numerical Simulation on Collapse Behavior of RC Frames with a Column Removal under Blast Loads
摘要
Abstract
Based on the existing experimental investigation on RC frame with a column removal,the three-dimensional finite element simulation with a combination of separated and integral models for a four-story two-span RC frame structure was established by using the finite element software AUTODYN,and analyzed through three stages.The effect of gas-solid interaction was considered to simulate the dynamic response and failure modes of RC frame due to the removal of reinforced concrete columns under explosion loads.In the numerical simulation,the strain rate effects were also taken into account for the dynamical constitutive behaviors of the materials.In the case of the failure of the corner column or the short side col-umn under blast loads,the failure modes of the column and the dynamic displacement of the beam-column j oints from FE models agreed well with the experimental results.Meanwhile,the failure process of the column removal and the influence of the longitudinal-steel in the column on the dynamic response of the RC frame structure were examined.Moreover,the simulation results indicate that the way adopting separated and integral models in the plastic and elastic deformation region,respectively,not only ensured the au-thenticity and adaptiveness of the simulation of the RC frame under column removal,but also reduced sub-stantial computational effort.Therefore,this developed model can provide a reference for the further stud-ies on the parametric analysis and collapse mode control of RC frame structures under blast loads.关键词
爆炸荷载/抗倒塌/钢筋混凝土框架结构/AUTODYN/数值模拟Key words
blast loading/progressive collapse/reinforced concrete frame/AUTODYN/numerical simulation分类
建筑与水利引用本文复制引用
何庆锋,周超,易伟建..爆炸移除钢筋混凝土框架柱抗倒塌性能数值模拟∗[J].湖南大学学报（自然科学版）,2016,43(11):61-67,7.基金项目
国家自然科学基金资助项目(51108170,51578228),National Natural Science Foundation of China(51108170,51578228) （51108170,51578228）
国家重点专项项目(2016YFC0701400) （2016YFC0701400）
中央高校基本科研业务费资助项目 （）
