| 钢纤维高强混凝土单轴压缩下应力应变关系 |
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| 引用本文： | 严少华,钱七虎,孙伟,尹放林. 钢纤维高强混凝土单轴压缩下应力应变关系[J]. 东南大学学报(自然科学版), 2001, 31(2): 77-80 |
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| 作者姓名： | 严少华 钱七虎 孙伟 尹放林 |
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| 作者单位： | 1. 解放军理工大学人防工程系,南京 210007
2. 东南大学材料科学与工程系,南京 210096 |
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| 基金项目： | 国家自然科学基金资助项目(59708012). |
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| 摘 要： | 在实际工程中推广应用钢纤维高强混凝土，要了解其基本力学性能，用MTS815．03型液压伺服刚性压力试验机，对钢纤维含量为0－6％、抗压强度在65－120MPa范围的4种钢纤维高强混凝土，进行单轴压缩荷载作用下的应力－应变全过程试验。结合试验给出全曲线的方程，并分析钢纤维对抗压强度、弹性模量、韧度、泊松比等的影响。试验表明，当钢纤维长度大于或接近于最大集料尺寸时，钢纤维高强混凝土具有较高的抗压强度和韧度，是一种优良的新型建筑材料。
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| 关 键 词： | 钢纤维高强混凝土 应力－应变关系 抗压强度 弹性模量 单轴压缩荷载 |
| 文章编号： | 1001-0505(2001)02-0077-04 |
Stress-Strain Relationship of High-Strength Steel Fiber Reinforced Concrete in Compression |
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| Yan Shaohua. Stress-Strain Relationship of High-Strength Steel Fiber Reinforced Concrete in Compression[J]. Journal of Southeast University(Natural Science Edition), 2001, 31(2): 77-80 |
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| Authors: | Yan Shaohua |
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| Abstract: | It is necessary to research the basic mechanical performance inorder to use high-strength steel fiber reinforced concrete (HSFC) in practical engineering. Tests are conducted to characterize the stress-strain relationship of HSFC in compression by MTS815.03 rock testing machine. The concrete strength investigated ranges from 65 to 120 MPa and the volume fraction of steel fiber ranges from 0 to 6%. Based on the test data, an analytical model is proposed to generate the complete stress-strain curve for HSFC. The elastic modulus and toughness and Poisson’s ration of HSFC are also calculated in this paper. It is also proved by tests that HSFC is a good building material with high strength and high toughness when steel fibers are longer than the size of aggregate in concrete. |
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| Keywords: | high strength steel fiber reinforced concrete stress strain relationship compressive strength elastic modulus |
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