（1 启迪设计集团股份有限公司， 苏州 215021； 2 根特大学结构工程系， 根特9052）

［摘要］基于欧洲规范，对钢筋混凝土柱在不同因素影响下的抗火性能进行了研究。介绍了国内外钢筋混凝土柱抗火研究现状，以欧洲规范为依据，提出了一个基于横截面计算的数值分析模型。分析了在ISO 834标准火的作用下，受火时间不同时，钢筋混凝土柱截面的温度分布以及极限承载力，并分别与欧洲规范和已有试验数据进行了对比，证明了计算模型稳定可靠。结合大量试验研究结果，讨论了受火时间、受火方式、截面尺寸、配筋率、轴压比和荷载偏心距、混凝土保护层厚度以及混凝土柱的长细比等因素对钢筋混凝土柱抗火性能的影响。

［关键词］钢筋混凝土柱； 标准火； 极限承载力； 抗火性能； 二阶效应

中图分类号：TU375.1~3， TU318文献标识码：A文章编号：1002-848X(2017)20-0098-06

Fire resistance performance study on reinforced concrete columns under effects of different factors based on European norms

Feng Jiaxian1, Wang Lijie2, Van Coile  R2

(1 Tus\|Design Group Co., Ltd., Suzhou 215021, China; 2 Department of Structural Engineering, Ghent University, Ghent 9052, Belgium)

Abstract:Based on the European norms, the fire resistance performances of concrete columns under effects of different factors were studied. The research status of fire resistance of concrete columns at home and abroad was introduced, and based on the European norms, a numerical analysis mode based on cross-section calculation was proposed. Then, under the action of standard fire in ISO 834, the temperature distribution and the ultimate bearing capacity of the cross-section of concrete column were analyzed under different fire resistance periods, and the results were compared with the European norms and the existing test data respectively. The results show that the calculation mode is stable and reliable. According to the results of a large number of experimental studies, factors were discussed such as fire period, fire mode, cross-section size, reinforcement ratio, axial compression ratio, load eccentricity, thickness of concrete protective layer and slenderness ratio of concrete column and other factors.

Keywords:reinforced concrete column; standard fire; ultimate bearing capacity; fire resistance performance; second-order effect

作者简介：冯佳贤，硕士，工程师，Email:jiaxian.feng@siad-c.com。