砼柱构件受火后抗压性能试验研究与数值分析  

Experiment Study and Numerical Analysis of Compressive Test of Concrete Members under Fire Condition

作　　者：周荣桓 周宝桓 ZHOU Rong-huan;ZHOU Bao-huan(College of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China;College of Architectural Engineering, Anhui Engineering University, Wuhu Anhui 241000, China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601 [2]安徽工程大学建筑工程学院,安徽芜湖241000

出　　处：《佳木斯大学学报（自然科学版）》2019年第5期692-694,共3页Journal of Jiamusi University：Natural Science Edition

摘　　要：钢筋混凝土构件在火灾中的变形量是判定筑结构抗火性的重要指标之一。对砼柱构件进行室内火灾模拟试验,并对其主要性能即抗压强度进行了实时监测。最后通过ABAQUS数值软件对砼柱构件受火过程进行了建模分析,证实了室内试验具有较高的准确性。试验研究表明热值的大小与燃烧时间长短与混凝土损伤变形量呈正相关关系,混凝土与钢筋的最危险破坏截面均发生在砼柱边角部位。The deformation of reinforced concrete members in fire is one of the important indicators for determining the fire resistance of building structures. The indoor fire simulation of concrete members is carried out. Real-time monitoring of its main performance, i.e. compressive strength, is carried out. Finally, the ABAQUS numerical software was used to model and analyze the fire process of the column members, which confirmed that the laboratory test has high accuracy. The experimental study shows that the magnitude of the calorific value is positively correlated with the length of the burning time and the amount of concrete damage. The most dangerous sections of the concrete and steel bars are in the corners of the mast.

关 键 词：钢筋混凝土受火试验 混凝土变形 钢筋变形 数值模拟 

分 类 号：TU502.5[建筑科学—建筑技术科学]