混杂纤维混凝土连梁抗震性能试验及受剪承载力研究

于婧; 贾会芳; 张辉

doi:10.13204/j.gyjzG22070115

混杂纤维混凝土连梁抗震性能试验及受剪承载力研究

doi: 10.13204/j.gyjzG22070115

于婧^1,2,
贾会芳¹,
张辉¹

1. 西安建筑科技大学土木工程学院, 西安 710055;
2. 西部绿色建筑国家重点实验室, 西安 710055

基金项目:

陕西省自然科学基础研究计划一般项目(面上)(2020JM-487)

西部绿色建筑重点实验室自主研究课题(LSZZ202019)。

详细信息

作者简介:
于婧,女,1982年出生,博士,副教授。电子信箱:yujing1506@163.com

计量
- 文章访问数: 52
- HTML全文浏览量: 7
- PDF下载量: 4
- 被引次数: 0
出版历程
- 收稿日期: 2022-07-01

Experimental Study on Seismic Performance and Shear Capacity of Hybrid Fiber Concrete Coupling Beam

1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. State Key Laboratory of Green Building in Western China, Xi'an 710055, China

摘要

摘要: 为了改善小跨高比连梁的抗震性能,对3个混杂纤维混凝土连梁和1个普通混凝土连梁进行了拟静力试验,分析了连梁的破坏形态、滞回性能、受剪承载力和延性等性能,研究了连梁基体材料和连梁截面宽度对其抗震性能和受剪承载力的影响。试验表明:混杂纤维混凝土有利于连梁的多裂缝开展,3个混杂纤维混凝土连梁均表现为弯曲剪切型破坏;跨高比和配筋相同的混杂纤维混凝土连梁的受剪承载力和位移延性系数比普通混凝土连梁分别提高了53.66%和29.31%。同时,应用ABAQUS有限元分析软件探究了跨高比和箍筋间距对混杂纤维混凝土连梁受剪承载力的影响规律。在此基础上,基于分项叠加思想,建立了同时考虑混凝土、纵筋、箍筋和纤维贡献的混杂纤维混凝土连梁受剪承载力计算式,计算结果与试验结果吻合良好,可为该类构件设计及其相关领域研究提供参考。
- 混杂纤维混凝土 /
- 连梁 /
- 拟静力试验 /
- 有限元分析 /
- 受剪承载力
Abstract: In order to improve the seismic performance of small span height ratio coupling beams, quasi-static tests were carried out on three hybrid fiber concrete coupling beams and one ordinary concrete coupling beam. The failure modes, hysteresic properties, shear capacity and ductility of the coupling beams were analyzed. The effects of the matrix material and section width of the coupling beams on the seismic performance and shear capacity of the coupling beams were studied. The test results showed that hybrid fiber concrete was beneficial to the development of multiple cracks of the coupling beams, and all the three hybrid fiber concrete coupling beams showed flexural shear failure. The shear capacity and displacement ductility of hybrid fiber reinforced concrete beams with the same span-height ratio and reinforcement are 53.66% and 29.31% higher than those of ordinary concrete beams, respectively. At the same time, the finite element analysis software ABAQUS was used to investigate the influence of span-height ratio and stirrup spacing on the shear capacity of hybrid fiber reinforced concrete beams. On this basis, based on the idea of sub-item superposition, a formula for calculating the shear capacity of hybrid fiber reinforced concrete beam was established, which also considered the contributions of concrete, longitudinal reinforcement, stirrup and fiber. The calculated results were in good agreement with the experimental results, which could provide a reference for the design of this kind of member and the research in related fields.
- hybrid fiber concrete /
- coupling beam /
- quasi-static test /
- finite element analysis /
- shear capacity

HTML全文

参考文献(24)

[1]	中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2016.
[2]	CANBOLAT B A,PARRA-MONTESINOS G J,WIGHT J K,et al.Experimental study on the seismic behavior of high-performance fiber-reinforced cement composite coupling beams[J].ACI Structural Journal,2005,102(6):909-912.
[3]	HYUN D Y, KIM S W, JEON E, et al.Seismic performance of shear-dominant coupling beams using high-performance fiber-reinforced cement-based composites[C]//8PCEE. Singapore: 2007: 44-49.
[4]	LEQUESNE R, SETKIT M, KOPCZYNSKI C, et al. Implementation of high-performance fiber reinforced concrete coupling beams in high-rise core-wall structures[J].ACI Special Publication, 2011, 280(12): 1-12.
[5]	梁兴文,邢朋涛,刘贞珍,等.小跨高比纤维增强混凝土连梁抗震性能试验及受剪承载力研究[J].建筑结构学报,2016,37(8):48-57.
[6]	张宏战,张瑞瑾,黄承逵.钢纤维高强混凝土连梁抗剪试验研究[J].土木工程学报, 2007, 40(11): 15-22.
[7]	于婧,翟天文,梁兴文,等.钢-PVA纤维混凝土流动性及力学性能研究[J].建筑材料学报, 2018, 21(3): 402-407.
[8]	姚志雄,周健.纤维增强活性粉末混凝土(RPC)断裂能的研究[J].建筑材料学报, 2005, 8(4): 356-360.
[9]	夏冬桃,徐世烺,夏广政.钢/聚丙烯混杂纤维对HPC深梁受弯性能的影响[J].哈尔滨工业大学学报, 2010, 42(2): 313-316.
[10]	刘胜兵,徐礼华.混杂纤维高性能混凝土深梁受剪性能[J].土木工程学报, 2013, 46(3): 29-39.
[11]	车佳玲,马彩霞,梁兴文,等.FRC预制连梁梁端埋入长度计算方法研究[J]. 建筑材料, 2015, 31(11):29-33.
[12]	中国建筑科学研究院.建筑抗震试验规程:JGJ/T 101—2015[S].北京:中国建筑工业出版社,2015.
[13]	PARK R. State of the art report ductility evaluation from laboratory and analytical testing [C]//Proceedings of Ninth World Conference on Earthquake Engineering. Tokyo: 1988: 605-616.
[14]	SINGH M, SHEIKH A H, ALI M S M, et al.Experimental and numerical study of the flexural behaviour of ultra-high performance fibre reinforced concrete beams[J].Construction & Building Materials, 2017, 138:12-25.
[15]	梁兴文,王照耀,于婧,等.超高性能混凝土有腹筋梁受剪性能及受剪承载力研究[J].工程力学, 2018, 51(10) : 56-67.
[16]	戚家南,王景全,周凯,等.UHPC梁受剪性能试与抗剪承载力计算方法[J].中国公路学报, 2020, 33(7): 95-103.
[17]	HOGNESTAD E, HANSON N W, MCHENRY D P. Concrete stress distribution in ultimate strength design[J]. Journal of the American Concrete Institute,1955(12):52-28.
[18]	宋世研, 叶列平. 中、美混凝土结构设计规范构件正截面受弯承载力的分析比较[J].建筑科学, 2007, 23(7): 28-33.
[19]	马瑞刚.PVA-FRC对角斜筋小跨高比连梁受剪承载力实验研究和理论分析[D].西安:西安建筑科技大学,2013.
[20]	LIM T Y, PARAMSIVAM P, LEE S L.Shear and moment capacity of reinforced steel-fiber-concrete beams[J]. Magazine of Concrete Research, 1987,39(140):148-160.
[21]	SWAMY R N,JONES R,CHIAM A T P.Influence of steel fibers on the shear resistance of lightweight concrete T-beams[J]. ACI Structural Journal, 1993,90(1):3-11.
[22]	WLLE K, EL-TAWIL S, NAAMAN A E. Properties of strain hardening ultra high performance fiber reinforced concrete (UHP-FRC) under direct tensile loading [J]. Cement and Concrete Composites, 2014, 48: 53-66.
[23]	KUNTIA M,STOJADINOVIC B,GOEL S C. Shear strength of normal and hight-strength fiber reinforced concrete beams without stirrups [J]. ACI Structural Journal, 1999,96(2):282-289.
[24]	XIAO Y L,XIA J, MACKIE K, et al. Dowel action and shear strength contribution of high strength rebar embedded in ultra-high performance fiber reinforced concrete [J]. Engineering Struc-tures, 2013(83): 223-232.