玄武岩纤维筋增强再生混凝土梁抗剪性能的试验研究

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (2): 15-20.

玄武岩纤维筋增强再生混凝土梁抗剪性能的试验研究

韩定杰¹, 刘中宪², 刘华新^1*, 张志金¹

1.辽宁工业大学土木建筑工程学院,锦州121001;
2.天津市土木建筑结构防护与加固重点实验室,天津300384

收稿日期:2017-08-16 出版日期:2018-02-28 发布日期:2018-02-28
通讯作者: 刘华新(1966-),男,博士,教授,主要从事新材料与新型结构方面的研究,lgliuhuaxin@163.com。
作者简介:韩定杰(1991-),男,硕士研究生,主要从事新材料与新型结构及其应用方面的研究。
基金资助:
辽宁省自然科学基金(2015020208);天津市土木建筑结构防护与加固重点实验室开放课题(201703133)

EXPERIMENTAL STUDY ON SHEAR BEHAVIOR OF BFRP REINFORCED RAC BEAMS

HAN Ding-jie¹, LIU Zhong-xian², LIU Hua-xin^1*, ZHANG Zhi-jin¹

1.Civil Engineering & Architecture College of Liaoning University of Technology, Jinzhou 121000, China;
2.Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin 300384, China

Received:2017-08-16 Online:2018-02-28 Published:2018-02-28

摘要/Abstract

摘要： 为研究BFRP筋再生混凝土梁的受剪性能,对纵筋为BFRP筋的无腹筋和有腹筋梁的破坏形态,挠度变化,纵向受力钢筋、箍筋应变和极限承载力等受力性能进行了试验研究,并与同尺寸纵筋为钢筋的再生混凝土梁进行对比分析。结果表明:BFRP筋再生混凝土梁均发生剪切破坏,而同等配筋条件下的钢筋再生混凝土梁在配置箍筋后由剪切破坏变为弯曲破坏;箍筋对BFRP筋梁抗剪承载力的提高更显著;有腹筋的BFRP筋再生混凝土梁的延性较无腹筋梁更好;箍筋抗剪作用的发挥与梁剪切斜裂缝的位置、倾角相关。

关键词: 梁, 玄武岩纤维筋, 再生混凝土, 箍筋, 抗剪承载力

Abstract: The shear performances are presented for recycled aggregate concrete (RAC) beams reinforced with basalt fiber-reinforced polymer (BFRP) bars. Four beams reinforced with BFRP bars with and without stirrups were constructed and tested. The failure modes, load-deflection, load-strain behavior of longitudinal reinforcement and stirrups, and shear capacity were discussed respectively. And, a comparative analysis was carried out with four steel bars reinforced RAC beams with the same size. It was observed that all the BFRP bars reinforced concrete beams failed in shear, but the steel bars reinforced RAC beams is changed from shear failure to flexural failure after being configured the stirrups. Stirrups on the improvement of BFRP bars reinforced beam shear capacity is more significant. The deformability of BFRP bars reinforced concrete beams with stirrups is better than that of beams without stirrups, and the shear resistance ance effect of the stirrups is related to the position and inclination of the shear cracks in the beam.

Key words: beams, basalt fiber-reinforced polymer, recycled aggregate concrete, stirrups, shear capacity

中图分类号:

TB332

韩定杰, 刘中宪, 刘华新, 张志金. 玄武岩纤维筋增强再生混凝土梁抗剪性能的试验研究[J]. 玻璃钢/复合材料, 2018, 0(2): 15-20.

HAN Ding-jie, LIU Zhong-xian, LIU Hua-xin, ZHANG Zhi-jin. EXPERIMENTAL STUDY ON SHEAR BEHAVIOR OF BFRP REINFORCED RAC BEAMS[J]. Fiber Reinforced Plastics/Composites, 2018, 0(2): 15-20.

参考文献

[1] Guide for the design and construction of structural concrete reinforced with FRP bars: ACI committee 440[S]. Farmington Hills: American Concrete Institute, 2015.
[2] Chowdhury M A, Zahid Z I, Islam M M. Development of shear capacity prediction model for FRP-RC beam without web reinforcement[J]. Advances in Materials Science and Engineering, 2016(11): 1-19.
[3] Elgabbas F, Vincent P, Ahmed E A, et al. Experimental testing of basalt-fiber-reinforced polymer bars in concrete beams[J]. Composites Part B Engineering, 2016, 91: 205-218.
[4] Korol E, Tejchman J, Mróz Z. Experimental and numerical assessment of size effect in geometrically similar slender concrete beams with basalt reinforcement[J]. Engineering Structures, 2017, 141: 272-291.
[5] Kisku N, Joshi H, Ansari M, et al. A critical review and assessment for usage of recycled aggregate as sustainable construction material[J]. Construction & Building Materials, 2017, 131: 721-740.
[6] Xiao J Z, Li J B, Zhang C. On relationships between the mechanical properties of recycled aggregate concrete: An overview[J]. Materials & Structures, 2006, 39(6): 655-664.
[7] 陈宗平, 占东辉, 徐金俊. 再生粗骨料含量对再生混凝土力学性能的影响分析[J]. 工业建筑, 2015, 45(1): 130-135.
[8] 周静海, 何海进, 孟宪宏,等. 再生混凝土基本力学性能试验[J]. 沈阳建筑大学学报(自然科学版), 2010, 26(3): 464-468.
[9] Arezoumandi M, Volz J S, Khayat K H. An experimental study on shear strength of reinforced concrete beams with 100% recycled concrete aggregate[J]. Engineering Structures, 2015, 88(2): 154-162.
[10] Maruyama I, Sogo M, Sogabe T, et al. Flexural properties of reinforced recycled concrete beams[J]. Materials & Structures, 2004.
[11] 周静海, 姜虹, ZHOUJinghai,等. 再生粗骨料混凝土梁抗剪性能[J]. 沈阳建筑大学学报(自然科学版), 2009, 25(4): 683-688.
[12] Al-Zahraa F, El-Mihilmy M T, Bahaa T. Experimental investigation of shear strength of concrete beams with recycled concrete aggregates[J]. International Journal of Materials & Structural Integrity, 2011, 5(4): 291-310(20).
[13] 陈宗平, 陈宇良, 占东辉,等. 取代率对钢筋再生混凝土构件力学性能影响分析[J]. 建筑结构, 2014(9):60-64.
[14] Wegian F M, Abdalla H A. Shear capacity of concrete beams rein-forced with fiber reinforced polymers[J]. Composite Structures, 2005, 71(1): 130-138.
[15] Yost J R, Gross S P, Dinehart D W. Shear strength of normal strength concrete beams reinforced with deformed GFRP bars[J]. Journal of Composites for Construction, 2001, 5(4): 268-275.