外包钢板-高延性混凝土组合连梁抗震性能试验研究
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摘要
为改善小跨高比连梁的抗震性能,采用高延性混凝土(HDC)代替混凝土,设计了2个外包钢板-HDC组合连梁、1个外包钢板-混凝土组合连梁和1个内置钢板-HDC组合连梁试件。通过拟静力试验,研究其破坏形态、变形能力及耗能能力。试验结果表明:采用HDC代替混凝土可提高外包钢板组合连梁的变形能力和耐损伤能力;HDC与钢腹板的协同工作性能较好,有利于钢腹板抗剪作用的发挥;外包钢板-HDC组合连梁的耗能能力明显高于外包钢板-混凝土组合连梁和内置钢板组合连梁;外包钢板-HDC组合连梁的剪压比设计值为0.65～0.70,其剪压比明显高于内置钢板组合连梁。因此,采用外包钢板-HDC组合连梁,可提高小跨高比连梁的剪压比限值,解决连梁设计中剪压比超限的问题。
To improve the aseismic behavior of coupling beams with a small span-to-depth ratio, high ductile concrete(HDC) is used to replace the concrete. Two HDC filled steel plate composite coupling beams, one concrete filled steel plate composite coupling beam and one HDC steel plate composite coupling beam, were designed. The failure pattern, deformation capacity and energy dissipation capacity of composite coupling beams were studied by the quasi-static tests. The experimental results show that the deformability and damage-tolerance of the steel plate composite coupling beams can be improved by replacing concrete with HDC. The synergistic performance of HDC and steel webs is good, which is beneficial to the shear effect of steel webs. The energy dissipation of the HDC filled steel plate composite coupling beams is significantly higher than those of the concrete filled steel plate composite coupling beam and of the HDC steel plate composite coupling beam. The design values of shear-compression ratio of the HDC filled steel plate composite coupling beams is 0.65-0.70,which is obviously higher than that of the HDC steel plate composite coupling beam. Therefore, the shear-compression ratio limitation of the coupling beams can be improved by using the HDC filled steel plate composite coupling beams, and the problem of shear-pressure ratio ultra-limit of coupling beam in design can be solved.
To improve the aseismic behavior of coupling beams with a small span-to-depth ratio, high ductile concrete(HDC) is used to replace the concrete. Two HDC filled steel plate composite coupling beams, one concrete filled steel plate composite coupling beam and one HDC steel plate composite coupling beam, were designed. The failure pattern, deformation capacity and energy dissipation capacity of composite coupling beams were studied by the quasi-static tests. The experimental results show that the deformability and damage-tolerance of the steel plate composite coupling beams can be improved by replacing concrete with HDC. The synergistic performance of HDC and steel webs is good, which is beneficial to the shear effect of steel webs. The energy dissipation of the HDC filled steel plate composite coupling beams is significantly higher than those of the concrete filled steel plate composite coupling beam and of the HDC steel plate composite coupling beam. The design values of shear-compression ratio of the HDC filled steel plate composite coupling beams is 0.65-0.70,which is obviously higher than that of the HDC steel plate composite coupling beam. Therefore, the shear-compression ratio limitation of the coupling beams can be improved by using the HDC filled steel plate composite coupling beams, and the problem of shear-pressure ratio ultra-limit of coupling beam in design can be solved.
引文
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[13]田建勃,史庆轩,王南,等.基于软化拉-压杆模型的小跨高比钢板-混凝土组合连梁受剪承载力分析[J].工程力学,2016,33(5):142―149.Tian Jianbo,Shi Qingxuan,Wang Nan,et al.Shear strength of plate-reinforced composite coupling beams with small span-to-depth ratio using softened strut-and-tie model[J].Engineering Mechanics,2016,33(5):142―149.(in Chinese)
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[15]寇佳亮,邓明科,梁兴文.延性纤维增强混凝土单轴拉伸性能试验研究[J].建筑结构,2013(1):59―64.Kou Jialiang,Deng Mingke,Liang Xingwen.Experimental study of uniaxial tensile properties of ductile fiber reinforced concrete[J].Building Structure,2013,43(1):59―64.(in Chinese)
[16]邓明科,孙宏哲,梁兴文,等.延性纤维混凝土抗弯性能的试验研究[J].工业建筑,2014,44(5):85―90.Deng Mingke,Sun Hongzhe,Liang Xingwen,et al.Experimental study of flexural behavior of ductile fiber reinforced concrete[J].Industrial Construction,2014,44(5):85―90.(in Chinese)
[17]邓明科,秦萌,梁兴文.高延性纤维混凝土抗压性能试验研究[J].工业建筑,2015,45(4):120―126.Deng Mingke,QinMeng,Liang Xingwen.Experimental study of compressive behavior of high ductility fiber reinforced concrete[J].Industrial Construction,2015,45(4):120―126.(in Chinese)
[18]LI Victor C.高延性纤维增强水泥基复合材料的研究进展及应用[J].硅酸盐学报,2007,35(4):531―536.Li Victor C.Process and application of engineered cementations composites[J].Journal of the Chinese Ceramic Society,2007,35(4):531―536.(in Chinese)
[19]Li V C,Wang S,Wu C.Tensile strain-hardening behavior of PVA-ECC[J].ACI Material Journal,2001,98(6):483―492.
[20]徐世烺,李贺东.超高韧性水泥基复合材料直接拉伸试验研究[J].土木工程学报,2009,42(9):32―41.Xu Shilang,Li Hedong.Uniaxial tensile experiments of ultra-high toughness cementitious composite[J].China Civil Engineering of Journal,2009,42(9):32―41.(in Chinese)
[21]梁兴文,车佳玲,邓明科.对角斜筋小跨高比纤维增强混凝土连梁抗震性能试验研究[J].建筑结构学报,2013,34(8):135―141.Liang Xingwen,Che Jialing,Deng Mingke.Experimental research on seismic behavior of diagonally reinforced FRC coupling beams with small span-to-depth ratio[J].Journal of Building Structure,2013,34(8):135―141.(in Chinese)
[22]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.Liang Xingwen,Xing Pengtao,Liu Zhenzhen,et al.Experimental study on seismic behavior and shear capacity of FRC coupling beams with small span-to-depth ratio[J].Journal of Building Structure,2016,37(8):48―57.(in Chinese)
[23]梁兴文,刘贞珍,邢朋涛,等.纤维增强混凝土对角斜筋小跨高比连梁抗震性能试验研究及受剪承载力分析[J].土木工程学报,2017,50(2):27―35.Liang Xingwen,Liu Zhenzhen,Xing Pengtao,et al.Experimental study on seismic behavior and shear capacity of diagonally reinforced fiber-reinforced concrete coupling beams with small span-to-depth ratio[J].China Civil Engineering Journal,2017,50(2):27―35.(in Chinese)
[24]DBJ61/T112-2016,高延性混凝土应用技术规程[S].北京:中国建筑工业出版社,2016.DGJ61/T112-2016,Technical specification for application of high ductile concrete[S].Beijing:China Architecture and Building Press,2016.(in Chinese)
[25]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001:220.Yao Qianfeng,Chen Ping.Structural test of civil engineering[M].Beijing:China Architecture and Building Press,2001:220.(in Chinese)
[26]JGJ/T 101―2015,建筑抗震试验规程[S].北京:中国建筑工业出版社,2015.JGJ/T 101―2015,Specification for seismic test of building[S].Beijing:China Architecture and Building Press,2015.(in Chinese)
[2]孙占国,林宗凡,戴瑞同.菱形配筋剪内墙连梁的受力性能[J].建筑结构学报,1994,15(5):14―23.Sun Zhanguo,Lin Zongfan,Dai Ruitong.Behavior of coupling beams of shear wall reinforced with inclined rhomboidal bars[J].Journal of Building Structures,1994,15(5):14―23.(in Chinese)
[3]Paulay T.Seismic design in reinforced concrete:The state of the art in New Zealand[J].Bulletin of the New Zealand National Society for Earthquake Engineering,1988,21(3):208―233.
[4]Mai-Quang K,Han S W,Shin M,et al.Reduction of reinforcement congestion in slender coupling beam using bundled diagonal bars[J].Magazine of Concrete Research,2017,69(22):1―13.
[5]傅剑平,皮天祥,韦锋,等.钢筋混凝土联肢墙小跨高比复合斜筋连梁抗震性能试验研究[J].土木工程学报,2011,44(2):57―64.Fu Jianping,Pi Tianxiang,Wei Feng,et al.Experimental study on seismic behaviors of small-aspect-ratio coupling beams in RC structural walls proportioned with combined slanting reinforcements[J].China Civil Engineering of Journal,2011,44(2):57―64.(in Chinese)
[6]梁兴文,李方圆,张涛,等.新配筋方案小跨高比连梁抗震性能试验研究[J].工程力学,2009,26(12):119―126.Liang Xingwen,Li Fangyuan,Zhang Tao,et al.Experimental study on seismic behaviour of new reinforcement scheme deep coupling beams[J].Engineering Mechanics,2009,26(12):119―126.(in Chinese)
[7]李贤,夏承柱,沙士钰,等.小跨高比钢-混凝土组合连梁抗震性能试验研究[J].建筑结构学报,2015,36(增刊1):337―342.Li Xian,Xia Chengzhu,Sha Shiyu,et al.Experimental study on seismic behavior of deep steel-concrete composite coupling beams[J].Journal of Building Structure,2015,36(Suppl 1):337―342.(in Chinese)
[8]Lam W Y,Su R,Pam H J.Experimental study on embedded steel plate composite coupling beams[J].Journal of Structural Engineering-ASCE,2005,131(8):1294―1302.
[9]Su R,Pam H J,Lam W Y.Effects of shear connectors on plate-reinforced composite coupling beams of short and medium-length spans[J].Journal of Constructional Steel Research,2006,62(1/2):178―188.
[10]Su R,Lam W Y,Pam H J.Behavior of embedded steel plate in composite coupling beams[J].Journal of Constructional Steel Research,2008,64(10):1112―1128.
[11]张刚.钢板-混凝土连梁抗震性能的试验研究[D].北京:清华大学,2005.Zhang Gang.Experimental study on seismic behavior of steel plate reinforced concrete coupling beams[D].Beijing:Tsinghua University,2005.(in Chinese)
[12]史庆轩,田建勃,王秋维,等.小跨高比钢板-混凝土组合连梁抗震性能试验研究[J].建筑结构学报,2015,36(2):104―114.Shi Qingxuan,Tian Jianbo,Wang Qiuwei,et al.Experimental research on seismic behavior of plate-reinforced composite coupling beam with small span-to-depth ratio[J].Journal of Building Structure,2015,36(2):104―114.(in Chinese)
[13]田建勃,史庆轩,王南,等.基于软化拉-压杆模型的小跨高比钢板-混凝土组合连梁受剪承载力分析[J].工程力学,2016,33(5):142―149.Tian Jianbo,Shi Qingxuan,Wang Nan,et al.Shear strength of plate-reinforced composite coupling beams with small span-to-depth ratio using softened strut-and-tie model[J].Engineering Mechanics,2016,33(5):142―149.(in Chinese)
[14]聂建国,胡红松.外包钢板-混凝土组合连梁试验研究(I):抗震性能[J].建筑结构学报,2014,35(5):1―9.Nie Jianguo,Hu Hongsong.Experimental research on concrete filled steel plate composite coupling beams(I):Seismic behavior[J].Journal of Building Structures,2014,35(5):1―9.(in Chinese)
[15]寇佳亮,邓明科,梁兴文.延性纤维增强混凝土单轴拉伸性能试验研究[J].建筑结构,2013(1):59―64.Kou Jialiang,Deng Mingke,Liang Xingwen.Experimental study of uniaxial tensile properties of ductile fiber reinforced concrete[J].Building Structure,2013,43(1):59―64.(in Chinese)
[16]邓明科,孙宏哲,梁兴文,等.延性纤维混凝土抗弯性能的试验研究[J].工业建筑,2014,44(5):85―90.Deng Mingke,Sun Hongzhe,Liang Xingwen,et al.Experimental study of flexural behavior of ductile fiber reinforced concrete[J].Industrial Construction,2014,44(5):85―90.(in Chinese)
[17]邓明科,秦萌,梁兴文.高延性纤维混凝土抗压性能试验研究[J].工业建筑,2015,45(4):120―126.Deng Mingke,QinMeng,Liang Xingwen.Experimental study of compressive behavior of high ductility fiber reinforced concrete[J].Industrial Construction,2015,45(4):120―126.(in Chinese)
[18]LI Victor C.高延性纤维增强水泥基复合材料的研究进展及应用[J].硅酸盐学报,2007,35(4):531―536.Li Victor C.Process and application of engineered cementations composites[J].Journal of the Chinese Ceramic Society,2007,35(4):531―536.(in Chinese)
[19]Li V C,Wang S,Wu C.Tensile strain-hardening behavior of PVA-ECC[J].ACI Material Journal,2001,98(6):483―492.
[20]徐世烺,李贺东.超高韧性水泥基复合材料直接拉伸试验研究[J].土木工程学报,2009,42(9):32―41.Xu Shilang,Li Hedong.Uniaxial tensile experiments of ultra-high toughness cementitious composite[J].China Civil Engineering of Journal,2009,42(9):32―41.(in Chinese)
[21]梁兴文,车佳玲,邓明科.对角斜筋小跨高比纤维增强混凝土连梁抗震性能试验研究[J].建筑结构学报,2013,34(8):135―141.Liang Xingwen,Che Jialing,Deng Mingke.Experimental research on seismic behavior of diagonally reinforced FRC coupling beams with small span-to-depth ratio[J].Journal of Building Structure,2013,34(8):135―141.(in Chinese)
[22]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.Liang Xingwen,Xing Pengtao,Liu Zhenzhen,et al.Experimental study on seismic behavior and shear capacity of FRC coupling beams with small span-to-depth ratio[J].Journal of Building Structure,2016,37(8):48―57.(in Chinese)
[23]梁兴文,刘贞珍,邢朋涛,等.纤维增强混凝土对角斜筋小跨高比连梁抗震性能试验研究及受剪承载力分析[J].土木工程学报,2017,50(2):27―35.Liang Xingwen,Liu Zhenzhen,Xing Pengtao,et al.Experimental study on seismic behavior and shear capacity of diagonally reinforced fiber-reinforced concrete coupling beams with small span-to-depth ratio[J].China Civil Engineering Journal,2017,50(2):27―35.(in Chinese)
[24]DBJ61/T112-2016,高延性混凝土应用技术规程[S].北京:中国建筑工业出版社,2016.DGJ61/T112-2016,Technical specification for application of high ductile concrete[S].Beijing:China Architecture and Building Press,2016.(in Chinese)
[25]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001:220.Yao Qianfeng,Chen Ping.Structural test of civil engineering[M].Beijing:China Architecture and Building Press,2001:220.(in Chinese)
[26]JGJ/T 101―2015,建筑抗震试验规程[S].北京:中国建筑工业出版社,2015.JGJ/T 101―2015,Specification for seismic test of building[S].Beijing:China Architecture and Building Press,2015.(in Chinese)