[1]朱忠锋,王文炜.FRP编织网/ECC复合加固钢筋混凝土圆柱力学性能的试验研究[J].东南大学学报(自然科学版),2016,46(5):1082-1087.[doi:10.3969/j.issn.1001-0505.2016.05.031]
 Zhu Zhongfeng,Wang Wenwei.Experimental study on mechanical behaviour of circular reinforced concrete columns strengthened with FRP textile and ECC[J].Journal of Southeast University (Natural Science Edition),2016,46(5):1082-1087.[doi:10.3969/j.issn.1001-0505.2016.05.031]
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FRP编织网/ECC复合加固钢筋混凝土圆柱力学性能的试验研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
46
期数:
2016年第5期
页码:
1082-1087
栏目:
土木工程
出版日期:
2016-09-20

文章信息/Info

Title:
Experimental study on mechanical behaviour of circular reinforced concrete columns strengthened with FRP textile and ECC
作者:
朱忠锋王文炜
东南大学交通学院, 南京 210096
Author(s):
Zhu Zhongfeng Wang Wenwei
School of Transportation, Southeast University, Nanjing 210096, China
关键词:
FRP编织网 ECC 加固 数值分析
Keywords:
fiber reinforced polymer(FRP)textile engineered cementitious composite(ECC) strengthening numerical analysis
分类号:
TU375.3
DOI:
10.3969/j.issn.1001-0505.2016.05.031
摘要:
考虑纤维编织网表面处理、层数和ECC施工工艺等因素,对FRP编织网/ECC复合增强钢筋混凝土圆柱进行了静力轴向受压试验,研究了加固柱的承载力和变形能力.在试验研究的基础上,利用有限元软件建立了加固柱的数值分析模型.试验结果表明,加固柱的破坏形态为BFRP编织网断裂;随着编织网层数的增加,加固柱的极限荷载和变形性能均有所提高;FRP编织网经过表面处理后,显著地改善了与ECC的界面黏结性能和共同工作性能;涂抹ECC和喷射ECC与FRP编织网形成的复合加固层,均能对核心钢筋混凝土柱提供有效的侧向约束应力,延缓了纵筋的屈服.计算结果表明,利用所建立的非线性有限元模型,可以有效地预测加固柱的极限荷载和受力性能.
Abstract:
Considering the cured surface and layers of fiber reinforced polymer(FRP)textile and construction technology of engineered cementitious composite(ECC), the static axial compressive experiment on circular reinforced concrete(RC)columns strengthened with FRP textile and ECC was carried out to study the loading and deformation capacities of RC column. Based on experimental results, the numerical analysis model was established using the finite element software. Experimental results show that all strengthened RC columns fail by the rupture of BFRP textile, the ultimate compressive strength and deformation capacity of confined RC columns are enhanced with the reinforced layer of FRP textile increasing. After surface treatment, the bonding behavior and the compatibility of FRP textile and ECC interface are significantly improved. Besides, the composite strengthened layer combined with both smeared and sprayed ECC strengthening and FRP textile can provide effective lateral confining stress to the strengthened RC columns and delay the yielding of longitudinal reinforced steel rebar. The analytical results show that the ultimate compressive strength and the deformation capacity of the strengthened RC columns can be predicted by using the nonlinear finite element model.

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备注/Memo

备注/Memo:
收稿日期: 2016-03-01.
作者简介: 朱忠锋(1987—),男,博士生;王文炜(联系人),男,博士,教授,博士生导师,wangwenwei@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51578135,51278441).
引用本文: 朱忠锋,王文炜.FRP编织网/ECC复合加固钢筋混凝土圆柱力学性能的试验研究[J].东南大学学报(自然科学版),2016,46(5):1082-1087. DOI:10.3969/j.issn.1001-0505.2016.05.031.
更新日期/Last Update: 2016-09-20