土木建筑工程

纤维加固震损钢筋混凝土- 砖组合开洞墙体的抗震性能

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  •  1. 云南大学  城市建设与管理学院,云南 昆明 650091; 2. 成都基准方中建筑设计有限公司,四川 成都 610021
雷真( 1986-) ,男,博士,讲师,主要从事结构抗震加固研究.

收稿日期: 2014-08-21

  修回日期: 2015-01-19

  网络出版日期: 2015-06-03

基金资助

云南省教育厅科学研究基金资助项目( 2014Z008) ; 云南大学校级科研项目( 2014CG012)

Seismic Performance of FRP-Strengthened Seismically-Damaged RC-Brick Masonry Walls with Opening

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  • 1. School of Urban Construction and Management, Yunnan University, Kunming 650091, Yunnan, China; 2. Chengdu JZFZ Architectural Design Co. Ltd., Chengdu 610021,Sichuan, China
雷真( 1986-) ,男,博士,讲师,主要从事结构抗震加固研究.

Received date: 2014-08-21

  Revised date: 2015-01-19

  Online published: 2015-06-03

Supported by

 Supported by the Scientific Research Foundation of Yunnan Educational Committee( 2014Z008)

摘要

通过3 片1 /2 缩尺比例的钢筋混凝土- 砖组合开洞墙体试验,研究了严重震损 低强度组合墙体采用玄武岩纤维加固后的抗震性能; 通过模拟地震的预损伤试验,以及不 加固、纤维直接加固和预损伤后修复加固试件的低周往复荷载试验,对比分析了不同试件 的试验现象、开裂荷载、极限承载力和位移、滞回曲线及耗能能力、承载力及刚度退化、变 形恢复能力和玄武岩纤维应变等. 结果表明: 加固后组合墙体表现出剪- 弯破坏的失效模 式,优于以剪切破坏为主的未加固试件; 纤维加固对组合墙体初始开裂荷载无提高作用, 但对其抗震性能的提高程度明显,震损试件加固后的抗震性能得到恢复并且超过未加固 试件.

本文引用格式

雷真 屈俊童 王勇 . 纤维加固震损钢筋混凝土- 砖组合开洞墙体的抗震性能[J]. 华南理工大学学报(自然科学版), 2015 , 43(7) : 84 -91 . DOI: 10.3969/j.issn.1000-565X.2015.07.012

Abstract

An experiment on three 1:2 scaled reinforced concrete-brick composite walls with opening was conducted to evaluate the seismic performance of severely-damaged low-strength composite walls strengthened by fiber-reinforced polymer (FRP). By a pre-damage experiment simulating earthquake and the low-cycle reversed loading experiments with no strengthening, strengthening by using fibers and rehabilitating the specimen after pre-damage,  the specimens were compared in terms of experimental phenomena, cracking load, ultimate bearing load and displacement, hysteretic curves, energy dissipation capacity, bearing capacity, stiffness degradation, deformation recovery capacity and FRP strain. The results show that (1) FRP-strengthened walls exhibit the shear-flexural failure mode, which is superior to the shear-dominant failure mode of the specimen without strengthening; (2) FRP strengthening can improve the seismic performance of the composite walls significantly, but not for the initial cracking load; and (3) the seismic performance of the damaged composite masonry walls strengthened with BFRP can recover or even exceed that of the specimen without strengthening.

参考文献

[1] 文力荣, 郑勇强, 姜早龙. 反复荷载下组合墙体变形性能的试验研究[J]. 中外建筑, 2003, 01: 47-49. ( Wen Lirong, Zheng Yongqiang, Jiang Zaolong. Experimental research on the deformation capacity of composite wall under cycling load [J]. Chineses and Overseas Architecture, 2003, 01: 47-49. (in Chinese)) [2] 郑勇强, 黄赛超, 史永亮 Chinese)) [3] 梁建国, 张喜望, 郑永强. 钢筋混凝土-砖砌体组合墙抗震性能[J]. 建筑结构学报, 2003, 24(3): 61-69. (Liang Jianguo, Zhang Xiwang, Zheng Yongqiang. Seismic performance of composite walls made of reinforced concrete and brick masonry [J]. Journal of Central South University of Technology, 2003, 24(3): 61-69. (in Chinese)) [4] 张毅斌, 张前国, 邬瑞锋, 奚肖凤. 混凝土小型空心砌块组合墙抗侧力试验研究[J]. 世界地震工程, 2001, 17(2): 98-103. (Zhang Yibin, Zhang Qianguo, Wu Ruifeng, Xi Xiaofeng. Study on lateral bearing test of composite wall with small type hollow masonry block [J]. World Information on Earthquake Engineering, 2001, 17(2): 98-103. (in Chinese)) [5] 周铁钢, 赵东. “5?12”地震绵竹城区砌体结构房屋震害调查与分析[J]. 西安建筑科技大学学报, 2008, 40(5): 613-618. (Zhou Tiegang, Zhao Dong. Investigation and analysis on the damage of masonry buildings in the urban area of Mianzhu druing “5?12” [J]. Journal of Xi’an University of Architecture and Technology, 2008, 40(5): 613-618. (in Chinese) ) [6] 李亚娥, 黄永东. 玉树地震中砌体结构楼房震害特征分析 [J]. 河北工程大学学报, 2011, 28(1): 34-36. (Li Ya’e, Huang Yongdong. Investigation and analysis on masonry building damage in Yushu earthquake [J]. Journal of Hebei University of Engineering, 2011, 28(1): 34-36. (in Chinese)) [7] Khanmohammadi M, Nahvinia MA, Marefat MS, Behnam H. Experimental investigation of cyclic behavior of confined masonry walls with weak shear strength. In: 6th International conference on seismology and earthquake engineering , Eehran, Iran; 2011: 1-8. [8] Su RKL, Lee YY, Lee CL, Ho JCM. Typical collapse modes of confined masonry buildings under strong earthquake loads. Open Construct Build Tech J, 2011; 5: 50-60. [9] 吴会阁, 赵彦, 曹秀玲, 谌会芹. 设门洞的加气混凝土砌体芯柱组合墙抗震性能分析 [J]. 混凝土与水泥制品, 2013, 10: 62-65. (Wu Huige, Zhao Yan, Cao Xiulin, Chen Huiqin. Research on seismic performance of aerated concrete block masonry composite wall with a door opening [J]. China Concrete and Cement Products, 2013, 10: 62-65. (in Chinese)) [10] 建筑部抗震办公室. 建筑地震破坏等级划分标准 [S]. 北京: 地震出版社, 1991. [11] Teng J G, Chen J F, Smith S. FRP-strengthened RC structures [M]. London: John Wiley and Sons, Ltd, 2001. [12] 周新刚, 韦昌芹, 叶列平. CFRP加固砌体结构的力学性能分析 [J]. 工程力学, 2008, 25(6): 51-59. (Zhou Xingang, Wei Changqin, Ye Lieping. Mechanical behavior of masonry walls strengthened with CFRP [J].Engineering Mechanics, 2008, 25(6): 51-59. (in Chinese)) [13] Zhao, T., Xie, J., Li H. Strengthening of cracked concrete block masonry walls using continuous carbon fiber sheet. Proc., 9th North American masonry conf., South Carolina, Clemson.2003, 156-167. [14] ElGawady, M. A., Lestuzzi, P., Badoux, M. In-plane seismic response of URM walls upgraded with FRP. Journal of Composites for Construction, ASCE, 2005, 9(6): 524-535. [15] Luccioni, B., Rouhier, V. C. (2011). In-plane retrofitting of masonry panels with fibre reinforced composite materials. Construction and Building Materials, 2011, 25(4), 1772-1788. [16] Santa-Maria, H., Alcaino, P. Repair of in-plane shear damaged masonry walls with external FRP. Construction and Building Materials, 2011, 25(3): 1172-1180. [17] 雷真, 周德源, 王继兵. 玄武岩纤维增强材料加固砌体砖墙的抗震性能 [J]. 华南理工大学学报, 2013, 41(3): 43-75. (Lei Zhen, Zhou Deyuan, Wang Jibing. Seismic performance of masonry walls strengthened with basalt fiber-reinforced polymer [J]. Journal of South China University of Technology, 2013, 41(3): 43-75. (in Chinese))
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