| 纤维增强混凝土缺口试件应力场数值分析 |
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| 引用本文： | 孔德清,黄培彦. 纤维增强混凝土缺口试件应力场数值分析[J]. 华南理工大学学报(自然科学版), 2000, 28(4): 1-5 |
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| 作者姓名： | 孔德清 黄培彦 |
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| 作者单位： | 华南理工大学交通学院,广东广州 |
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| 基金项目： | 国家自然科学基金资助项目 !( 19972 0 2 0 ),广东省自然科学基金资助项目 !( 990 567),广东省科委攻关项目 !( 99M 0 2 10 4G) |
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| 摘 要： | 利用连续纤维对混凝土构件进行加固或修补以提高其承载能力延长使用寿命是一种新的先进补强方法,本文探讨了带缺口的纤维薄板强混凝土及素混凝土三点曲民梁试件缺口端部应力场的有限元分析方法,并对两种试件的开裂载荷进行了推算和初步的论证,分析结果表明,纤维薄板增强混凝土试件缺口端部的应力分布比素混凝土缺口试件更趋平缓,应力减小,且其开裂载荷提高了７１．７％。
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| 关 键 词： | 缺口试件 应力场 混凝土构件 纤维增强 |
| 修稿时间： | 2000-01-18 |
Numerical Analysis of the Stress Field on Fiber_Reinforced Concrete Fracture Specimen with a V_Notch |
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| KONG De_qing,HUANG Pei_yan. Numerical Analysis of the Stress Field on Fiber_Reinforced Concrete Fracture Specimen with a V_Notch[J]. Journal of South China University of Technology(Natural Science Edition), 2000, 28(4): 1-5 |
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| Authors: | KONG De_qing HUANG Pei_yan |
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| Abstract: | Reinforcing or repairing concrete structures with continuous fiber is an advanced new way to raise load_bearing capacity and extend life. In this paper, a FEM of the stress field on the V_notch tip of fiber_sheet_reinforced concrete and concrete 3_P bending specimen is discussed, and the cracking loads of two kinds of specimen are also calculated and/or argued. The analysis results show that the change of the stress distribution curve on the V_notch tip of the fiber_sheet_reinforced concrete specimen is slower, the stress level is lower, and the cracking load is increased by 71.7%, than the concrete specimen. |
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| Keywords: | fiber sheet notch specimen FEM stress field concrete members |
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