[1]张亚芳,杨文龙.GFRP筋与钢筋混凝土梁的四点弯曲数值分析[J].深圳大学学报理工版,2013,30(No.4(331-440)):379-384.[doi:10.3724/SP.J.1249.2013.04379]
 Zhang Yafang and Yang Wenlong.Numerical analysis of four-point bending the concrete beams reinforced with glass fiber reinforced plastics and steel bars[J].Journal of Shenzhen University Science and Engineering,2013,30(No.4(331-440)):379-384.[doi:10.3724/SP.J.1249.2013.04379]
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GFRP筋与钢筋混凝土梁的四点弯曲数值分析()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第30卷
期数:
2013年No.4(331-440)
页码:
379-384
栏目:
土木建筑工程
出版日期:
2013-07-12

文章信息/Info

Title:
Numerical analysis of four-point bending the concrete beams reinforced with glass fiber reinforced plastics and steel bars
文章编号:
20130406
作者:
张亚芳杨文龙
广州大学土木工程学院,广州 510006
Author(s):
Zhang Yafang and Yang Wenlong
School of Civil Engineering, Guangzhou University, Guangzhou 510006, P.R.China
关键词:
结构工程四点弯曲损伤演化玻璃纤维增强塑料破坏机理挠度混凝土梁
Keywords:
structural engineering four-point bending failure process glass fiber reinforced plastics failure mechanism deflection concrete beam
分类号:
TB 333
DOI:
10.3724/SP.J.1249.2013.04379
文献标志码:
A
摘要:
建立玻璃纤维增强塑料(glass fiber reinforced plastics, GFRP)混凝土梁与钢筋混凝土梁的四点弯曲加载数值模型,从微观角度模拟GFRP混凝土梁与钢筋混凝土梁,演化了从微裂纹萌生到宏观破坏的损伤全过程,并对其进行应力与断裂能分析,研究GFRP混凝土梁与钢筋混凝土梁的内在破坏机理.结果表明,GFRP混凝土梁破坏时的裂缝数量多,在梁跨内分布比较均匀,钢筋混凝土梁的裂缝数量少,集中分布在外荷载作用点的附近区域;相同配筋的GFRP混凝土梁开裂后的刚度与极限荷载均小于钢筋混凝土梁;达到极限荷载时,GFRP混凝土梁的挠度与断裂能均大于钢筋混凝土梁.
Abstract:
The numerical models of the four point bending of glass-fiber-reinforced plastic (GFRP) reinforcement concrete beams and steel reinforcement concrete beams were established in this paper. The microscopic crack initiation and macroscopic damage processes of the two type beams were simulated, and the stress and fracture energy were analyzed to explore the internal damage mechanism of the two beams. The results show that: the GFRP reinforcement concrete beam has a large amount of cracks distributed uniformly in the bottom area, while cracks in the steel reinforcement concrete beam are fewer and concentrated in the loading area; the stiffness and ultimate load of the GFRP reinforcement concrete beam are less than those of the steel reinforcement concrete beam. The deflection and the fracture energy of the GFRP reinforcement concrete beam are higher than those of the steel reinforcement concrete beam when loads achieve the ultimate values.

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备注/Memo

备注/Memo:
Received:2013-03-24;Accepted:2013-05-28
Foundation:National Natural Science Foundation of China (51278136); Financial Support for Top Levels of Guangdong Universities(2050205)
Corresponding author:Professor Zhang Yafang. E-mail: zhangyafang2004@163.com
Citation:Zhang Yafang, Yang Wenlong. Numerical analysis of four-point bending the concrete beams reinforced with glass fiber reinforced plastics and steel bars [J]. Journal of Shenzhen University Science and Engineering, 2013, 30(4): 379-384.(in Chinese)
基金项目:国家自然科学基金资助项目(51278136);广东省高等学校高层次人才资助项目(2050205)
作者简介:张亚芳(1966-),女(汉族),湖北省黄石市人,广州大学教授.E-mail:zhangyafang2004@163.com
引文:张亚芳, 杨文龙.GFRP筋与钢筋混凝土梁的四点弯曲数值分析[J]. 深圳大学学报理工版,2013,30(4):379-384.
更新日期/Last Update: 2013-07-12