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（1 啟迪設(shè)計(jì)集團(tuán)股份有限公司， 蘇州 215021； 2 根特大學(xué)結(jié)構(gòu)工程系， 根特9052）

［摘要］基于歐洲規(guī)范，對(duì)鋼筋混凝土柱在不同因素影響下的抗火性能進(jìn)行了研究。介紹了國(guó)內(nèi)外鋼筋混凝土柱抗火研究現(xiàn)狀，以歐洲規(guī)范為依據(jù)，提出了一個(gè)基于橫截面計(jì)算的數(shù)值分析模型。分析了在ISO 834標(biāo)準(zhǔn)火的作用下，受火時(shí)間不同時(shí)，鋼筋混凝土柱截面的溫度分布以及極限承載力，并分別與歐洲規(guī)范和已有試驗(yàn)數(shù)據(jù)進(jìn)行了對(duì)比，證明了計(jì)算模型穩(wěn)定可靠。結(jié)合大量試驗(yàn)研究結(jié)果，討論了受火時(shí)間、受火方式、截面尺寸、配筋率、軸壓比和荷載偏心距、混凝土保護(hù)層厚度以及混凝土柱的長(zhǎng)細(xì)比等因素對(duì)鋼筋混凝土柱抗火性能的影響。

［關(guān)鍵詞］鋼筋混凝土柱； 標(biāo)準(zhǔn)火； 極限承載力； 抗火性能； 二階效應(yīng)

中圖分類號(hào)：TU375.1~3， TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

作者簡(jiǎn)介：馮佳賢，碩士，工程師，Email:jiaxian.feng@siad-c.com。