| 四面受火钢筋混凝土柱抗火性能分析 |
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| 引用本文： | 苏娟,王振清,白丽丽,韩玉来.四面受火钢筋混凝土柱抗火性能分析[J].哈尔滨工程大学学报,2007,28(12):1326-1331. |
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| 作者姓名： | 苏娟 王振清 白丽丽 韩玉来 |
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| 作者单位： | 哈尔滨工程大学,建筑工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 高等学校博士学科点专项科研基金 |
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| 摘 要： | 给出了一种计算四面高温下钢筋混凝土柱抗火性能的简化计算方法，计算中考虑了高温下柱的材料性能、力学性能和稳定性退化以及侧向挠度的影响．通过该方法能够比较准确地计算出不同温度下钢筋混凝土柱的抗火性能，与试验结果吻合较好．在此基础上，对四面受火柱截面抗火性能的各个影响因素进行了分析，得到结论为配筋率、钢筋屈服强度对柱的极限承载力影响不大，而混凝土保护层厚度、混凝土受压强度和截面尺寸则是影响钢筋混凝土柱极限承载力的主要因素．
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| 关 键 词： | 钢筋混凝土柱 火灾 失稳临界点 抗火性能 |
| 文章编号： | 1006-7043(2007)12-1326-06 |
| 修稿时间： | 2007年1月9日 |
Fire resistance of four-faced reinforced concrete columns |
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| SU Juan,WANG Zhen-qing,BAI Li-li,HAN Yu-lai.Fire resistance of four-faced reinforced concrete columns[J].Journal of Harbin Engineering University,2007,28(12):1326-1331. |
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| Authors: | SU Juan WANG Zhen-qing BAI Li-li HAN Yu-lai |
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| Abstract: | A simplified calculation of the fire resistance of four-faced reinforced concrete columns is presented,which considers the effects of material properties,mechanical performance,stability deterioration,and lateral deflection of the columns under high temperature.This approach can accurately evaluate the fire resistance of reinforced concrete columns when exposed to different temperatures and the results agree very well with experimental data.On this basis,various parameters affecting the fire resistance of four-face heated reinforced concrete columns were analyzed.Cross-sectional size,thickness of the concrete protection layer,and compression strength are overriding factors influencing bearing capacity,while the influence of steel ratio and steel strength can be ignored. |
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| Keywords: | reinforced concrete column fire balanced failure point fire resistance performance |
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