| 纤维增强水泥薄板及其复合梁抗弯性能研究 |
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| 引用本文： | 李启宏,张君,赵金平.纤维增强水泥薄板及其复合梁抗弯性能研究[J].工程力学,2011(5):135-142. |
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| 作者姓名： | 李启宏 张君 赵金平 |
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| 作者单位： | 清华大学土木工程系结构工程与振动教育部重点实验室;北新集团建材股份有限公司; |
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| 基金项目： | 国家自然科学基金项目(50878119) |
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| 摘 要： | 实验研究了纤维对水泥基复合材料抗弯性能的影响.结果表明,聚乙烯醇(PVA)纤维增强挤压脱水成型板材在弯曲荷载作用下呈现多点开裂、应变硬化的特性,具有良好的延性,聚丙烯(PP)纤维增强挤压脱水成型板材呈应变软化的特性,木纤维增强挤压脱水成型板材则呈脆性破坏;与普通混凝土梁相比,冷浇和热浇纤维增强板-混凝土组合梁的抗弯强度...
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| 关 键 词： | 纤维增强水泥 复合梁 力学性能 延性 应变硬化 |
FLEXURAL PROPERTIES OF FIBER REINFORCED CEMENT BOARD AND COMPOSITE BEAMS |
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| LI Qi-hong,ZHANG Jun,ZHAO Jin-ping.FLEXURAL PROPERTIES OF FIBER REINFORCED CEMENT BOARD AND COMPOSITE BEAMS[J].Engineering Mechanics,2011(5):135-142. |
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| Authors: | LI Qi-hong ZHANG Jun ZHAO Jin-ping |
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| Affiliation: | LI Qi-hong1,ZHANG Jun1,ZHAO Jin-ping2(1.Department of Civil Engineering,Key Laboratory of Structural Engineering and Vibration of China Education Ministry,Tsinghua University,Beijing,100084,China,2.Beijing New Building Materials Public Limited Company,Beijing 100096,China) |
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| Abstract: | Different fibers were used to study their influences on the properties of fiber reinforced cementitious composites boards and beams.It was found that polyvinyl alcohol(PVA) fibers reinforced extruded dewatering board presents multiple cracking and strain hardening performance under bending load,and therefore has a good ductility.While,polypropylene(PP) fiber reinforced cement board presents single cracking and strain softening.Wood fibers reinforced cement board presents brittleness failure under bending lo... |
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| Keywords: | fiber reinforced cement composite beam mechanical property ductility strain hardening |
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