FIRE RESISTANCE OF REINFORCED CONCRETE BEAMS: A THREE-DIMENSIONAL FINITE ELEMENT MODEL

摘要：

This paper presents a three-dimensional (3D) finite element (FE) model for the thermal and mechanical behavior of reinforced concrete (RC) beams exposed to fire. In this model,particular attention is paid to the modeling of interfacial behavior between the steel reinforcement and the concrete,an aspect which has rarely been considered in existing numerical studies. Results obtained using this model are compared with those from previous studies to examine the accuracy of the proposed model. These comparisons show that with the inclusion of the steel-to-concrete interfacial behavior,the deflection of RC beams at elevated temperature can be more accurately predicted.

关键词： Fire resistance Finite element model Reinforced concrete beams Bond-slip behavior Steel-to-concrete interfaces Performance-based approach

作者: W.Y. Gao J.G. Dai J.G. Teng

作者单位: Department of Civil and Structural Engineering,The Hong Kong Polytechnic University,Hong Kong,P.R. China

会议类型: 国际会议

会议名称: The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)

会议地点: 广州

会议语种:英文

页码: 2284-2289

在线出版日期: 2010-12-01（万方平台首次上网日期，不代表论文的发表时间）