| 低配网率纤维编织网增强混凝土轴拉力学性能 |
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| 引用本文： | 徐世烺,阎轶群. 低配网率纤维编织网增强混凝土轴拉力学性能[J]. 复合材料学报, 2011, 28(5): 206-213 |
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| 作者姓名： | 徐世烺 阎轶群 |
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| 作者单位： | 大连理工大学 海岸和近海工程国家重点实验室, 大连 116024 |
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| 基金项目： | 辽宁省创新团队项目(2006T020) |
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| 摘 要： | 通过单束纤维与纤维编织网增强混凝土(Textile reinforced concrete, TRC)薄板的单轴拉伸试验, 研究了纤维编织网增强混凝土这种新型材料的受力特征和影响其极限承载力的主要因素, 提出临界配网率的概念。以配网率为变化参数, 讨论了在低配网率(配网率小于1%)时材料的力学性能。当配网率大于临界配网率时, 纤维编织网增强混凝土薄板的极限承载力大于其开裂荷载, 加载过程中没有承载力突降; 随着配网率增加, 纤维的利用率随着配网率增加呈线性降低, 即纤维丝的强度并不能完全发挥。低配网率时, 随着配网率增加, 薄板的裂缝间距减小, 裂缝宽度下降。根据混合定律和ACK模型把TRC薄板的拉伸应力-应变曲线简化成三线型模型, 从宏观上提出了考虑配网率影响的极限承载力计算公式。
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| 关 键 词： | 纤维编织网增强混凝土 配网率 纤维利用率 极限承载力 本构模型 |
| 收稿时间： | 2010-08-08 |
Mechanical properties of textile reinforced concrete plate at low textile ratios |
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| XU Shilang,YAN Yiqun. Mechanical properties of textile reinforced concrete plate at low textile ratios[J]. Acta Materiae Compositae Sinica, 2011, 28(5): 206-213 |
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| Authors: | XU Shilang YAN Yiqun |
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| Affiliation: | State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | Uniaxial tensile experiments of textile reinforced concrete(TRC) plates and the results were detailed presented in this paper.Then the mechanical properties of textile reinforced concrete and its main influence factors on ultimate loading capacity were studied.And the concept of critical textile ratio was proposed.The mechanical properties of textile reinforced concrete plate were discussed at low textile ratios.When textile ratio was larger than the critical textile ratio,the ultimate bearing capacity exce... |
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| Keywords: | textile reinforced concrete textile ratio efficiency of fibers ultimate bearing capacity constitutive model |
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