负载下CFRP约束混凝土应力-应变关系分析型模型

潘毅; 万里; 吴晓飞

doi:10.3969/j.issn.0258-2724.2015.03.012

负载下CFRP约束混凝土应力-应变关系分析型模型

doi: 10.3969/j.issn.0258-2724.2015.03.012

潘毅^1,2,
万里¹,
吴晓飞¹

基金项目:

国家自然科学基金资助项目(51108389)

详细信息

作者简介:
潘毅(1977-),男,副教授,博士,研究方向为结构工程抗震抗风和纤维复合结构的应用,E-mail:panyi@home.swjtu.edu.cn

计量
- 文章访问数: 878
- HTML全文浏览量: 61
- PDF下载量: 572
- 被引次数: 0
出版历程
- 收稿日期: 2014-04-30
- 刊出日期: 2015-06-25

Analysis-Oriented Stress-Strain Model of CFRP Confined Concrete with Preload

摘要

摘要: 为研究负载水平对FRP(纤维增强复合材料)约束混凝土柱峰值应力和峰值应变的影响,根据32个CFRP(碳纤维增强复合材料)约束混凝土圆柱构件和16个CFRP约束混凝土方柱构件的试验结果,引入负载影响因子,对J G Teng提出的CFRP约束混凝土柱峰值应力和峰值应变计算公式进行修正.在此基础上分析了CFRP约束混凝土柱构件轴向-侧向应变关系,以J G Teng本构模型为主动约束关系,建立了负载下CFRP约束混凝土应力-应变分析型模型.研究结果表明:模型理论曲线与试验曲线接近,修正后的峰值应力和峰值应变与试验结果较吻合,圆柱构件的误差约10%,方柱构件的误差在15%左右.
- CFRP(碳纤维增强复合材料) /
- 约束混凝土柱 /
- 负载水平 /
- 应力-应变关系 /
- 分析型模型
Abstract: In order to investigate the effect of preload ratio on the peak stress and peak strain of FRP (fiber reinforced plastics) confined concrete columns, based on the experimental analyses of 32 CFRP (carbon FRP) confined concrete circular columns and 16 CFRP confined square concrete columns, a preload factor was considered to modify the J G Teng's formulas of peak stress and peak strain of CFRP confined concrete column. Based on the above the axial-lateral strain relationship of CFRP confined concrete was analyzed, and an analysis-oriented stress-strain model was set up by considering the effect of preload and taking the constitutive model purposed by J G Teng as an active confined relation. The research results show that the stress-strain relationship is consistent with the experimental result, and modified peak stress and peak strain agree well with the test results, and the error margins for the circular column specimens and square column specimens are about 10% and 15%, respectively.
- CFRP (carbon fiber reinforced plastics) /
- confined concrete column /
- preload ratio /
- stress-strain relationship /
- analysis-oriented model

HTML全文

参考文献(34)

TOGAY J C, THOMAS V. FRP-confined concrete in circular sections: review and assessment of stress-strain models

[J]. Engineering Structures, 2013, 49(4):1068-1088.

SAMAAN M, MIRMIRAN A, SHAHAWY M. Model of concrete confined by fiber composites

MIRMIRAN A, SHAHAWY M. Dilation characteristics of confined concrete

SPOELSTRA M R, MONTI G. FRP-confined concrete model

[J]. Journal of Structure Engineering, 1998, 124(9): 1025-1031.

FAM A Z, RIZKALLA S H. Confinement model for axially loaded concrete confined by circular fiber-reinforced polymer tubes

[J]. Mechanics of Cohesive-Frictional Materials, 1997, 2(3): 237-249.

MANDER J B, PRIESTLEY M J, PARK R. Theoretical stress-strain model for confined concrete

王震宇,王代玉,吕大刚. FRP约束混凝土圆柱应力-应变分析模型

[J]. Journal of Composites for Construction, 1999, 3(3): 143-150.

JIANG T, TENG J G. Analysis-oriented stress strain models for FRP-confined concrete

TENG J G, HUANG Y L, LAM L, et al. Theoretical model for fiber reinforced polymer-confined concrete

曹双寅,潘毅,敬登虎,等. 负载下碳纤维布约束混凝土圆柱应力-应变关系的试验研究与分析

[J]. ACI Structural Journal, 2001, 98(4): 451-461.

潘毅,曹双寅,敬登虎,等. 负载下碳纤维布约束混凝土方柱应力-应变关系的试验研究与分析

ROCHETTE P, LABOSSIERE P. Axial testing of rectan-gular column models confined with composites

[J]. Structure Engineering, 1988, 114(8): 1804-1826.

YANG X, WEI J, NANNI A. Shape effect on the performance of carbon fiber reinforced polymer wraps

吴刚,吕志涛. 纤维增强复合材料(FRP)约束混凝土矩形柱应力-应变关系的研究

[J]. 哈尔滨工业大学学报,2010, 42(2): 200-206. WANG Zhenyu, WANG Daiyu, LV Dagang. Stress-strain analytical model for FRP-confined concrete circular column

[J]. Journal of Harbin Institute of Technology, 2010, 42(2): 200-206.

SAMDANI S. Analytical study of FRP-confined concrete columns

[J]. Structure Engineering, 2007, 29(11): 2968-2986.

[J]. Journal of Composites for Construction, 2007, 11(2): 201-210.

[J]. 东南大学学报,2008,30(2): 788-793. CAO Shuangyin, PAN Yi, JING Denghu, et al. Experimental research on axially loaded circular concrete columns confined by CFRP under preload

[J]. Journal of Southeast University, 2008, 30(2): 788-793.

[J]. 土木工程学报,2009,42(1): 23-29. PAN Yi, CAO Shuangyin, JING Denghu, et al. Test and analysis of the axial stress-strain relationship of square-section concrete columns confined by CFRP under preload

[J]. China Civil Engineering Journal, 2009, 42(1): 23-29.

[J]. Journal of Composites for Construction, 2000, 4(3): 129-136.

[J]. Journal of Composites for Construction, 2004, 8(5): 444-451.

[J]. 建筑结构学报,2004,25(3): 99 -106. WU Gang, LV Zhitao. Study on the stress-strain relationship of FRP-confined concrete rectangular columns

[J]. Journal of Building Structures, 2004, 25(3): 99-106.

[D]. Toronto: University of Toronto, 2003.

施引文献

附加材料(0)

访问统计