Temperature Characteristics and Impact Factors of RC Columns in Metro Stations under Fire Environment

摘要：

　　As the main load-bearing structures of subway stations, reinforced concrete (RC) columns are related to subway station safety in high temperature environments.In this paper, the reinforced concrete column temperature distribution and influencing factors were investigated.The temperatures of two feature points were measured using a ceramic heater inside different cross-sectional shapes of fire-affected reinforced concrete columns.The temperature field of the fire-affected RC columns in the metro stations was calculated with ABAQUS.The factors affecting the reinforced concrete column internal temperature were analyzed in terms of the cross-sectional shape, feature point, surface characteristics and heating curve.The simulation and experimental results are basically consistent.The temperature curve determined the trend of temperature inside the reinforced concrete columns.The temperature field was uneven around the steel of the reinforced concrete columns.In the same condition, the intemal temperature of the circular cross-sectional column was higher than that of the square column.The temperature field in the reinforced concrete column with high temperature flue gas and the international standard temperature curve were analyzed.This article provides a basis for failure prediction of RC columns in metro stations under a fire environment.

关键词： RC columns temperature characteristics fire environment sectional shape simulation and verification

作者: LIAN Suqian WANG Zhirong WANG Qingsong WANG Lu LIU Yulang

作者单位: College of safety science and engineering, Nanjing Tech University, Nanjing 210009, Jiangsu, China State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, A

会议类型: 国际会议

会议名称: The 2016 International Symposium on Safety Science and Technology(2016安全科学与技术国际会议)

会议地点: 昆明

会议语种:英文

页码: 672-679

在线出版日期: 2016-10-17（万方平台首次上网日期，不代表论文的发表时间）