| 高温后方钢管混凝土钢材和混凝土的本构关系 |
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| 引用本文： | 姜绍飞,李明,卞忠保,许丕元.高温后方钢管混凝土钢材和混凝土的本构关系[J].辽宁工程技术大学学报(自然科学版),2005,24(5):677-679. |
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| 作者姓名： | 姜绍飞 李明 卞忠保 许丕元 |
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| 作者单位： | [1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]辽宁金帝建设集团有限公司,辽宁沈阳110015 |
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| 基金项目： | 国家建设部科技攻关基金资助项目(2000[034])，沈阳市科技局基金资助项目(1022040-1-04) |
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| 摘 要： | 对常温下方钢管混凝土（CFSST）中的钢材和混凝土的受力情况分别进行了分析，在此基础上，总结了常用的本构关系模型：介绍了高温后CFSST中钢材和混凝土的本构关系模型；提出了一种新的，考虑钢材侧向约束作用的，恒高温后CFSST中钢材和混凝土的本构关系模型；用实验验证了该模型的有效性。结果表明理论计算和实验结果吻合良好，所提模型是合理有效的。
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| 关 键 词： | 方钢管混凝土 常温作用 高温作用后 本构关系 |
| 文章编号： | 1008-0562(2005)05-0677-03 |
| 修稿时间： | 2003年11月6日 |
Constitutive relations between steel and concrete in concrete-filled square steel tube after high temperature |
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| JIANG Shao-fei,LI Ming,BIAN Zhong-bao,XU Pi-yuan.Constitutive relations between steel and concrete in concrete-filled square steel tube after high temperature[J].Journal of Liaoning Technical University (Natural Science Edition),2005,24(5):677-679. |
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| Authors: | JIANG Shao-fei LI Ming BIAN Zhong-bao XU Pi-yuan |
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| Institution: | JIANG Shao-fei1,LI Ming1,BIAN Zhong-bao2,XU Pi-yuan1 |
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| Abstract: | The performance and behavior of steel and concrete in concrete-filled square steel tube(CFSST) at ambient temperature is described firstly.Meanwhile the constitutive relation model widely used is also analyzed and summed up.A constitutive relation model between steel and concrete in CFSST after high temperature is introduced.A new constitutive relation model of steel and concrete after high temperature,which could allow for the effect of steel-tubular-lateral-confinement on core concrete is presented.The validity of the proposed model is illustrated by test results.The result shows that the theoretical analysis is in good agreement with the test results and the proposed model is reasonable and effective. |
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| Keywords: | concrete-filled square steel tubes ambient temperature after high temperature constitutive relations |
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