玄武岩纤维筋全再生混凝土无腹筋梁受剪性能试验研究

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (8): 76-82.

玄武岩纤维筋全再生混凝土无腹筋梁受剪性能试验研究

韩定杰, 刘华新^*, 张志金, 彭长岭

辽宁工业大学土木建筑工程学院,锦州121001

收稿日期:2017-03-13 出版日期:2017-08-28 发布日期:2017-08-28
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)

EXPERIMENTAL STUDY OF THE SHEAR PERFORMANCE OF BFRP-REINFORCED RAC BEAMS WITHOUT STIRRUPS

HAN Ding-jie, LIU Hua-xin^*, ZHANG Zhi-jin, PENG Chang-ling

Civil Engineering & Architecture College of Liaoning University of Technology, Jinzhou 121000, China

Received:2017-03-13 Online:2017-08-28 Published:2017-08-28

摘要/Abstract

摘要： 通过4根玄武岩纤维筋与4根钢筋再生混凝土无腹筋梁的受剪试验,研究采用100%粗骨料取代率的再生混凝土梁的裂缝开展、破坏等情况;分析不同纵筋类型下,剪跨比、纵向配筋率和混凝土抗压强度对梁开裂荷载、极限承载力和跨中挠度变化的影响。比较中国规范(GB 50608—2010)、美国规范(ACI 440.1R-06)、加拿大规范(CSA.S 806-12)中规定的计算方法对玄武岩纤维筋再生混凝土梁受剪承载力的适用性。研究结果表明:钢筋再生混凝土梁的受力性能类似于传统的钢筋混凝土梁,而玄武岩纤维筋再生混凝土梁在荷载作用下,裂缝扩展较快且宽度更大;中国规范(GB 50608—2010)对试验梁抗剪承载力的计算值过于保守,美国规范(ACI 440.1R-06)最为接近,加拿大规范(CSA.S 806-12)次之。

关键词: 无腹筋梁, 玄武岩纤维筋, 再生混凝土, 挠度, 抗剪承载力

Abstract: According to the shear tests of 4 basalt fiber reinforced polymer (BFRP) reinforced recycled aggregate concrete (RAC) beams without stirrups and 4 recycled concrete beams without stirrups, the failure modes and cracking patterns for recycled concrete beams of which recycled coarse aggregate replacement ratio for 100% were observed. The influence of shear span ratio, reinforcement ratio, and concrete compressive strength on the cracking load, ultimate bearing capacity and deflection of the beams with different types of longitudinal reinforcement were also analyzed. The test results were compared with shear design equations of the GB 50608—2010, the ACI-440.1R-06 and the CSA.S 806-12 guidelines. The results indicate that the behavior of recycled concrete beam is similar to that of ordinary concrete beam, yet the crack propagation and crack width are faster and wider for recycled concrete beams reinforced with BFRP bars. And, shear design equations of the ACI-440.1R-06 and the CSA.S 806-12 codes provided quite close predictions. However, the predictions of GB 50608—2010 were over-conservative.

Key words: beam without stirrups, basalt fiber reinforced polymer bars, recycled aggregate concrete, deflection, shear capacity

中图分类号:

TB332

韩定杰, 刘华新, 张志金, 彭长岭. 玄武岩纤维筋全再生混凝土无腹筋梁受剪性能试验研究[J]. 玻璃钢/复合材料, 2017, 0(8): 76-82.

HAN Ding-jie, LIU Hua-xin, ZHANG Zhi-jin, PENG Chang-ling. EXPERIMENTAL STUDY OF THE SHEAR PERFORMANCE OF BFRP-REINFORCED RAC BEAMS WITHOUT STIRRUPS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(8): 76-82.

参考文献

[1] 肖建庄, 李佳彬, 兰阳. 再生混凝土技术研究最新进展与评述[J]. 混凝土, 2003(10): 17-20.
[2] N. Kisku, H. Joshi, M. Ansari,et al. A Critical review and Assessment for Usage of Recycled Aggregate as Sustainable Construction Material[J]. Construction and Building Materials, 2016, 131: 721-740.
[3] 肖建庄, 兰阳. 再生混凝土梁抗剪性能试验研究[J]. 结构工程师, 2004, 20(6): 54-58.
[4] 周静海, 姜虹. 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.
[5] González-Fonteboa B, Martínez-Abella F. Shear strength of recycled concrete beams[J]. Construction and Building Materials, 2007, 21(4): 887-893.
[6] Arezoumandi M, Drury J, Volz J S, et al. Effect of Recycled Concrete Aggregate Replacement Level on Shear Strength of Reinforced Concrete Beams[J]. Aci Materials Journal, 2015, 112(4).
[7] 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.
[8] Guide for the design and construction of structural concrete reinforced with FRP bars: ACI 440.1R-06[S]. Farmington Hills: ACI Committee 440, 2006.
[9] Design and construction of buildings components with fiber-reinforced polymers: CSA.S 806-12[S]. Toronto: Canadian Standards Association, 2012.
[10] 纤维增强复合材料建设工程应用技术规范: GB 50608—2010[S]. 北京: 中国计划出版社, 2010.
[11] Baena M, Torres L, Turon A, et al. Bond behaviour between recycled aggregate concrete and glass fibre reinforced polymer bars[J]. Construction & Building Materials, 2016, 106: 449-460.
[12] Huaxin Liu, Jianwei Yang, Xuezhi Wang. Bond behavior between BFRP bar and recycled aggregate concrete reinforced with basalt fiber[J]. Construction and Building Materials, 2017, 477-483.
[13] 张卫东, 王振波, 王成武. GFRP筋与再生混凝土粘结性能试验研究[J]. 玻璃钢/复合材料, 2016(9): 66-69.
[14] Machial R, Alam M S, Rteil A. Revisiting the shear design equations for concrete beams reinforced with FRP rebar and stirrup[J]. Materials and Structures, 2012, 45(11):1593-1612.
[15] Razaqpur A G, Isgor B O, Greenaway S, et al. Concrete Contribution to the Shear Resistance of Fiber Reinforced Polymer Reinforced Concrete Members[J]. Journal of Composites for Construction, 2004, 8(5): 452-460.
[16] 刘宗全, 岳清瑞, 李荣, 等. 全FRP筋混凝土梁斜截面承载力研究进展[J]. 玻璃钢/复合材料, 2017(01): 109-115+35.
[17] 张晓亮, 屈文俊. 无腹筋GFRP筋混凝土梁抗剪性能试验[J]. 中国公路学报, 2010, 23(5): 51-57.
[18] Ashour A F, Kara I F. Size effect on shear strength of FRP reinforced concrete beams[J]. Composites Part B Engineering, 2014, 60(1): 612-620.