| 1860级低松弛钢绞线高温下力学性能 |
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| 引用本文： | 张昊宇,郑文忠.1860级低松弛钢绞线高温下力学性能[J].哈尔滨工业大学学报,2007,39(6):861-865. |
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| 作者姓名： | 张昊宇 郑文忠 |
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| 作者单位： | 哈尔滨工业大学,土木工程学院,哈尔滨,150090;哈尔滨工业大学,土木工程学院,哈尔滨,150090 |
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| 基金项目： | 黑龙江省杰出青年科学基金资助项目 |
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| 摘 要： | 对4根抗拉强度标准值fptk为1860 N/mm2的φs15.2低松弛预应力钢绞线中丝进行了高温下力学性能试验.据试验结果,同时对比已有预应力钢丝高温性能研究成果,得到了高温下该种钢绞线中丝极限强度、弹性模量、比例极限、条件屈服强度的计算公式和蠕变计算公式,可用于预应力结构抗火性能研究.
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| 关 键 词： | 预应力 钢绞线中丝 高温 力学性能 |
| 文章编号： | 0367-6234（2007）06-0861-05 |
| 修稿时间： | 2005-06-10 |
Mechanical property of steel strand at high temperature |
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| ZHANG Hao-yu,ZHENG Wen-zhong.Mechanical property of steel strand at high temperature[J].Journal of Harbin Institute of Technology,2007,39(6):861-865. |
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| Authors: | ZHANG Hao-yu ZHENG Wen-zhong |
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| Affiliation: | School of Civil Engineering;Harbin Institute of Technology;Harbin 150090;China; |
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| Abstract: | Mechanical experiments on 4 middle wires of prestressing steel strand(fptk=1860 N/mm2,d=15.2mm,low relaxation of stress) at high temperature have been accomplished.Compared with existing research production of the mechanical experiment on prestressing steel wire at high temperature,calculation formula of tensile strength limit,modulus of elasticity,proportional limit,yielding strength,and creep strain model of the middle wire of the steel strand are established.These can be utilized in the analysis of fire ... |
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| Keywords: | prestress middle wire of steel strand high temperature mechanical property |
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