| HRB500级高强钢筋高温后的力学性能试验 |
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| 引用本文： | 吴红翠,王全凤,徐玉野,杨勇新,罗漪.HRB500级高强钢筋高温后的力学性能试验[J].华侨大学学报(自然科学版),2009,30(4). |
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| 作者姓名： | 吴红翠 王全凤 徐玉野 杨勇新 罗漪 |
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| 作者单位： | 华侨大学,土木工程学院,福建,泉州,362021 |
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| 基金项目： | 国家高技术研究发展(863)计划项目，福建省青年科技人才创新项目，华侨大学科研基金资助项目 |
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| 摘 要： | 对HRB500高强钢筋在高温后的力学性能进行试验,研究不同受火温度对其力学性能的影响,以及高温后的应力-应变关系曲线图的变化规律,并提出相应的力学模型.结果表明,经历高温作用并冷却后,高强钢筋的屈服强度、极限强度、弹性模量、延伸率和截面收缩率等力学性能随所经历的温度的不同而变化,变化规律也不相同. 钢筋的应力-应变关系发生一定的变化,但是一般仍然出现明显的屈服阶段和强化阶段,屈服台阶的高度随着温度的升高而降低;高强钢筋的弹性模量的变化很小.
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| 关 键 词： | 高强钢筋 高温 力学性能 力学模型 应力-应变 |
Experimental Research on Mechanics Performance of HRB500 Grade Steel Bars after High Temperature |
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| WU Hong-cui,WANG Quan-feng,XU Yu-ye,YANG Yong-xin,LUO Yi.Experimental Research on Mechanics Performance of HRB500 Grade Steel Bars after High Temperature[J].Journal of Huaqiao University(Natural Science),2009,30(4). |
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| Authors: | WU Hong-cui WANG Quan-feng XU Yu-ye YANG Yong-xin LUO Yi |
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| Institution: | College of Civil Engineering;Huaqiao University;Quanzhou 362021;China |
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| Abstract: | Based on the mechanical properties tests of HRB500 grade steel bars,the influence of different high temperatures and the variation of stress-strain curves after high temperature are investigated.The mechanical model is obtained.The results of experiments indicate that: mechanical properties of bars cooled down after different high temperatures,such as the yield strength,ultimate strength,elastic modulus and elongation percentage,vary with different high temperatures,and the variation for various properties ... |
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| Keywords: | high strength steel bars high temperature mechanical performance mechanical model stress-strain |
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