| 钢筋混凝土柱的耐火极限研究 |
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| 引用本文： | 吴波,洪洲.钢筋混凝土柱的耐火极限研究[J].自然灾害学报,2005(5). |
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| 作者姓名： | 吴波 洪洲 |
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| 作者单位： | 华南理工大学土木工程系 广东广州510640
(吴波)，华南理工大学土木工程系 广东广州510640(洪洲) |
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| 基金项目： | 国家自然科学基金资助项目(50478078)，广东省自然科学基金资助项目(031409)，国家教育部新世纪优秀人才支持计划项目(NCET-04-0819) |
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| 摘 要： | 编制了钢筋混凝土柱高温反应的全过程分析程序,程序的有效性得到了其他学者试验结果的验证。针对不同轴压比、截面尺寸、配筋率和荷载偏心率共480种工况进行了钢筋混凝土柱的高温反应分析,揭示了各主要参数对钢筋混凝土柱耐火极限的影响规律。在计算结果的基础上,定量给出了钢筋混凝土柱耐火极限的简化确定方法。研究结果表明:配筋率对轴压柱的耐火极限影响不大;严格控制轴压比和荷载偏心率是提高轴压柱和偏压柱耐火极限的有效措施。
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| 关 键 词： | 钢筋混凝土 柱 高温 耐火极限 |
Research on fire resistance of reinforced concrete column |
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| WU Bo,HONG Zhou.Research on fire resistance of reinforced concrete column[J].Journal of Natural Disasters,2005(5). |
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| Authors: | WU Bo HONG Zhou |
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| Abstract: | An analytical program for reinforced concrete column subjected to high temperature is proposed in this paper.The reliability of the program is validated using the test results provided by former researchers.In order to reveal the effect of main parameters on fire resistance of reinforced concrete column,480 reinforced concrete columns with different parameters are selected for fire response analysis.Different axial load ratios,dimensions of cross-section,ratios of reinforcement and load eccentric ratios of columns are considered in the analysis.Based on the simulation results,a simplified way to determine the fire resistance of reinforced concrete column is given in this paper.Simulation results show that the ratio of reinforcement has little influence on the fire resistance of reinforced concrete column subjected to centrically axial load,and reducing axial load ratio and reducing load eccentric ratio are effective measures to improve the fire resistance of both centrically loading and eccentrically loading columns. |
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| Keywords: | reinforced concrete column high temperature fire resistance limit |
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