| 超高强钢S960火灾后力学性能试验研究 |
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| 引用本文： | 强旭红,武念铎,姜旭,罗永峰.超高强钢S960火灾后力学性能试验研究[J].同济大学学报(自然科学版),2016,44(7):1076-1083. |
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| 作者姓名： | 强旭红 武念铎 姜旭 罗永峰 |
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| 作者单位： | 同济大学 土木工程学院，上海 200092,同济大学 土木工程学院，上海 200092,同济大学 土木工程学院，上海 200092,同济大学 土木工程学院，上海 200092 |
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| 基金项目： | 国家自然科学基金项目（51408150） |
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| 摘 要： | 通过试验研究超高强钢S960过火冷却至常温后的力学性能,得到过火高温对超高强钢S960弹性模量、屈服强度、极限强度以及应力-应变曲线的影响规律.结果表明,钢材火灾后的力学性能取决于钢材的等级和生产加工工艺.通过对试验数据进行数值拟合,给出可准确表达S960火灾高温后材料力学性能剩余程度的预测公式.
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| 关 键 词： | 超高强钢 火灾高温后 力学性能 剩余系数 预测公式 |
| 收稿时间： | 2015/12/22 0:00:00 |
| 修稿时间： | 2016/5/10 0:00:00 |
Experimental Study on Post fire Mechanical Properties of Very High Strength Steel S960 |
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| QIANG Xuhong,WU Nianduo,JIANG Xu and LUO Yongfeng.Experimental Study on Post fire Mechanical Properties of Very High Strength Steel S960[J].Journal of Tongji University(Natural Science),2016,44(7):1076-1083. |
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| Authors: | QIANG Xuhong WU Nianduo JIANG Xu and LUO Yongfeng |
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| Institution: | College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China and College of Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | This paper presents an experimental study on very high strength steel S960 after cooling down from elevated temperatures and its post fire elastic modulus, yield strength, ultimate strength and stress strain curves are obtained. The results show that the material properties of steels after fire are dependent on their grade and process of manufacture. Based on the experimental results, this paper proposes some unique predictive equations for evaluating the post fire mechanical properties of S960. |
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| Keywords: | very high strength steel post fire mechanical properties residual factor predictive equation |
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