高强筋材混凝土剪力墙抗震及自复位性能试验研究
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摘要
为研究配置钢绞线的钢筋混凝土剪力墙和配置钢绞线及CFRP筋的钢筋混凝土剪力墙的抗震性能及可恢复能力,完成了3个剪力墙试件的低周反复荷载试验,其中包括1个普通钢筋混凝土剪力墙对比试件。研究了在钢筋混凝土剪力墙中配置钢绞线和CFRP筋对剪力墙的破坏形态、裂缝发展、滞回性能、残余变形、残余裂缝、延性、刚度和耗能能力等的影响。结果表明:配置钢绞线和CFRP筋能够减小剪力墙的破坏区域,增大墙体的裂缝发展范围,减小刚度退化速率,但剪力墙的延性略有降低,滞回曲线饱满程度下降,耗能能力有所降低;同时,高强筋材混凝土剪力墙的残余变形和残余裂缝宽度较普通钢筋混凝土剪力墙的显著减小,自复位能力较好。
In order to evaluate the seismic performance and resilience of shear walls with steel strands and those with both steel strands and CFRP bars, three shear wall specimens,including a normal reinforced concrete, were tested under lateral reversed loading. The effect of steel strands and CFRP bars on the failure modes, crack development, hysteresis performance, residual deformation, residual crack, ductility, stiffness and energy dissipation capacity were studied. The test results indicate that the steel strands and CFRP bars can reduce the damaged areas, allow a wider distribution of cracks, and mitigate stiffness degradation,although the hysteretic curves become more pinched. The ductility and energy dissipation are also decreased slightly. However, the residual deformation and residual cracks of shear-walls reinforced with high strength bars are significantly reduced, showing satisfactory self-centering capability.
In order to evaluate the seismic performance and resilience of shear walls with steel strands and those with both steel strands and CFRP bars, three shear wall specimens,including a normal reinforced concrete, were tested under lateral reversed loading. The effect of steel strands and CFRP bars on the failure modes, crack development, hysteresis performance, residual deformation, residual crack, ductility, stiffness and energy dissipation capacity were studied. The test results indicate that the steel strands and CFRP bars can reduce the damaged areas, allow a wider distribution of cracks, and mitigate stiffness degradation,although the hysteretic curves become more pinched. The ductility and energy dissipation are also decreased slightly. However, the residual deformation and residual cracks of shear-walls reinforced with high strength bars are significantly reduced, showing satisfactory self-centering capability.
引文
[1] 李纲,刘杰,余素荣.2004年震情述评[J].中国地震,2005,21(1):130-137. (LI Gang, LIU Jie, YU Surong. A review of seismicity in 2004[J]. Earthquake Reserach in China,2005,21(1):130-137.(in Chinese))
[2] 清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9. (Civil and Structural Groups of Tsinghua University, Xinan Jiaotong University, Beijing Jiaotong University. Analysis on seismic damage of buildings in the Wenchuan earthquake[J]. Journal of Building Structures, 2008, 29(4):1-9. (in Chinese))
[3] 王亚勇,戴国莹.建筑抗震设计规范的发展沿革和最新修订[J].建筑结构学报,2010,31(6):7-16. (WANG Yayong, DAI Guoying. Evolution and present updation of ‘Code for seismic design of buildings’[J]. Journal of Building Structures, 2010, 31(6):7-16. (in Chinese))
[4] 工业与民用建筑抗震设计规范: TJ 11—1978[S]. 北京:中国建筑工业出版社,1979.(Code for seismic design of industry and civil buildings: TJ 11—1978[S]. Beijing: China Architecture & Building Press, 1979.(in Chinese))
[5] NEES/E-Defense. Report of the seventh joint planning meeting of NEES/E-defense collaborative research on earthquake engineering[R]. Berkeley: University of California, 2010.
[6] 徐培福,黄吉锋,陈富盛.近50年剪力墙结构震害及其对抗震设计的启示[J].建筑结构学报,2017,38(3):1-13. (XU Peifu, HUANG Jifeng, CHEN Fusheng. Earthquake damages to shear wall structure in last fifty years and seismic design enlightenment[J]. Journal of Building Structures, 2017, 38(3):3-13. (in Chinese))
[7] 吕西林,姜淳,卢煦.自复位钢筋混凝土框架结构及其拟静力试验[J].工程科学与技术,2018,50(3):73-81. (LU Xilin, JIANG Chun, LU Xu. Tri-axial self-centering reinforced concrete frame and its quasi-static test[J]. Advanced Engineering Sciences, 2018, 50(3):73-81. (in Chinese))
[8] LIN Y C, RICLES J, SAUSE R. Earthquake simulations on a self-centering steel moment resisting frame with web friction devices[C]// 14th World Conference on Earthquake Engineering. Beijing: Chinese Society for Earthquake Engineering,2008:301-309.
[9] 高丹盈,房栋,谷泓学.GFRP-钢绞线复合筋与混凝土黏结机理及强度计算模型[J].建筑结构学报,2018,39(4):130-139. (GAO Danying, FANG Dong, GU Hongxue. Bonding mechanism and strength calculation model of GFRP-steel composite rebars embedded in concrete[J]. Journal of Building Structures, 2018, 39(4):130-139. (in Chinese))
[10] 郝庆多,王言磊,欧进萍.GFRP/钢绞线复合筋黏结锚固试验研究及设计建议[J].土木工程学报,2008,41(4):40- 48. (HAO Qingduo, WANG Yanlei, OU Jinping. Experimental study and design recommendation on the bond between GFRP/steel wire composite rebars and concrete[J]. China Civil Engineering Journal, 2008,41(4): 40- 48.(in Chinese))
[11] 薛伟辰,王晓辉. 高性能碳纤维增强塑料(CFRP)绞线筋粘结性能研究[J].建筑结构学报, 2006, 27(6):67-73.(XUE Weichen,WANG Xiaohui. Study on bond properties of high performance CFRP strands[J]. Journal of Building Structures, 2006, 27(6):67-73. (in Chinese))
[12] EHSANI M R, SAADATMANESH H, TAO S. Design recommendations for bond of GFRP rebars to concrete[J]. Journal of Structural Engineering, 1996, 122(3):247-254.
[13] 郝庆多,欧进萍.GFRP/钢绞线复合筋混凝土梁的配筋率[J].工程力学,2012,29(11):80-87. (HAO Qingduo, OU Jinping. Experimental study on the reinforcement ratio of concrete beams reinforced with GFRP/steel wire composite rebars[J]. Engineering Mechanics, 2012, 29(11):80-87.(in Chinese))
[14] 混凝土结构试验方法标准: GB/T 50152—2012[S]. 北京:中国建筑工业出版社,2012.(Standard for test method of concrete structures: GB/T 50152—2012[S]. Beijing: China Architecture & Building Press, 2012.(in Chinese))
[15] 金属材料拉伸试验:第1部分: 室温试验方法:GB/T 228.1—2010[S]. 北京:中国标准出版社,2011.(Metallic materials: tensile testing: part 1: method of test at room temperature: GB/T 228.1—2010[S]. Beijing: Standards Press of China,2011.(in Chinese))
[16] 赵军,赵齐,陈纪伟.CFRP筋钢筋混凝土剪力墙自复位性能试验研究[J].土木建筑与环境工程,2016,38(3):18-24. (ZHAO Jun, ZHAO Qi, CHEN Jiwei. Experimental analysis of the self-centering performance of shear walls reinforced by CFRP and steel bars[J]. Journal of Civil, Architectural & Environmental Engineering, 2016, 38(3):18-24. (in Chinese))
[17] 建筑抗震设计规范: GB 50011—2010[S]. 北京:中国建筑工业出版社,2010.(Code for seismic design of buildings: GB 50011—2010[S]. Beijing: China Architecture & Building Press, 2010.(in Chinese))
[18] 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.(Specification for seismic test of buildings: JGJ/T 101—2015[S]. Beijing: China Architecture & Building Press, 2015.(in Chinese))
[19] 管仲国,李晓波,李建中.钢筋混凝土高墩多水准抗震性能试验[J].同济大学学报(自然科学版),2015,43(9):1295-1300. (GUAN Zhongguo, LI Xiaobo, LI Jianzhong. Experimental investigation on seismic performance of tall reinforced concrete bridge piers[J]. Journal of Tongji University (Natural Science),2015,43(9):1295-1300.(in Chinese))
[20] 肖全东,郭正兴.预制混凝土双板剪力墙的耗能能力[J].湖南大学学报(自然科学版),2014,41(9):35- 41. (XIAO Quandong, GUO Zhengxing. Energy dissipation of double-wall precast concrete shear walls[J]. Journal of Hunan University (Natural Science), 2014, 41(9):35- 41. (in Chinese))
[2] 清华大学、西南交通大学、北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9. (Civil and Structural Groups of Tsinghua University, Xinan Jiaotong University, Beijing Jiaotong University. Analysis on seismic damage of buildings in the Wenchuan earthquake[J]. Journal of Building Structures, 2008, 29(4):1-9. (in Chinese))
[3] 王亚勇,戴国莹.建筑抗震设计规范的发展沿革和最新修订[J].建筑结构学报,2010,31(6):7-16. (WANG Yayong, DAI Guoying. Evolution and present updation of ‘Code for seismic design of buildings’[J]. Journal of Building Structures, 2010, 31(6):7-16. (in Chinese))
[4] 工业与民用建筑抗震设计规范: TJ 11—1978[S]. 北京:中国建筑工业出版社,1979.(Code for seismic design of industry and civil buildings: TJ 11—1978[S]. Beijing: China Architecture & Building Press, 1979.(in Chinese))
[5] NEES/E-Defense. Report of the seventh joint planning meeting of NEES/E-defense collaborative research on earthquake engineering[R]. Berkeley: University of California, 2010.
[6] 徐培福,黄吉锋,陈富盛.近50年剪力墙结构震害及其对抗震设计的启示[J].建筑结构学报,2017,38(3):1-13. (XU Peifu, HUANG Jifeng, CHEN Fusheng. Earthquake damages to shear wall structure in last fifty years and seismic design enlightenment[J]. Journal of Building Structures, 2017, 38(3):3-13. (in Chinese))
[7] 吕西林,姜淳,卢煦.自复位钢筋混凝土框架结构及其拟静力试验[J].工程科学与技术,2018,50(3):73-81. (LU Xilin, JIANG Chun, LU Xu. Tri-axial self-centering reinforced concrete frame and its quasi-static test[J]. Advanced Engineering Sciences, 2018, 50(3):73-81. (in Chinese))
[8] LIN Y C, RICLES J, SAUSE R. Earthquake simulations on a self-centering steel moment resisting frame with web friction devices[C]// 14th World Conference on Earthquake Engineering. Beijing: Chinese Society for Earthquake Engineering,2008:301-309.
[9] 高丹盈,房栋,谷泓学.GFRP-钢绞线复合筋与混凝土黏结机理及强度计算模型[J].建筑结构学报,2018,39(4):130-139. (GAO Danying, FANG Dong, GU Hongxue. Bonding mechanism and strength calculation model of GFRP-steel composite rebars embedded in concrete[J]. Journal of Building Structures, 2018, 39(4):130-139. (in Chinese))
[10] 郝庆多,王言磊,欧进萍.GFRP/钢绞线复合筋黏结锚固试验研究及设计建议[J].土木工程学报,2008,41(4):40- 48. (HAO Qingduo, WANG Yanlei, OU Jinping. Experimental study and design recommendation on the bond between GFRP/steel wire composite rebars and concrete[J]. China Civil Engineering Journal, 2008,41(4): 40- 48.(in Chinese))
[11] 薛伟辰,王晓辉. 高性能碳纤维增强塑料(CFRP)绞线筋粘结性能研究[J].建筑结构学报, 2006, 27(6):67-73.(XUE Weichen,WANG Xiaohui. Study on bond properties of high performance CFRP strands[J]. Journal of Building Structures, 2006, 27(6):67-73. (in Chinese))
[12] EHSANI M R, SAADATMANESH H, TAO S. Design recommendations for bond of GFRP rebars to concrete[J]. Journal of Structural Engineering, 1996, 122(3):247-254.
[13] 郝庆多,欧进萍.GFRP/钢绞线复合筋混凝土梁的配筋率[J].工程力学,2012,29(11):80-87. (HAO Qingduo, OU Jinping. Experimental study on the reinforcement ratio of concrete beams reinforced with GFRP/steel wire composite rebars[J]. Engineering Mechanics, 2012, 29(11):80-87.(in Chinese))
[14] 混凝土结构试验方法标准: GB/T 50152—2012[S]. 北京:中国建筑工业出版社,2012.(Standard for test method of concrete structures: GB/T 50152—2012[S]. Beijing: China Architecture & Building Press, 2012.(in Chinese))
[15] 金属材料拉伸试验:第1部分: 室温试验方法:GB/T 228.1—2010[S]. 北京:中国标准出版社,2011.(Metallic materials: tensile testing: part 1: method of test at room temperature: GB/T 228.1—2010[S]. Beijing: Standards Press of China,2011.(in Chinese))
[16] 赵军,赵齐,陈纪伟.CFRP筋钢筋混凝土剪力墙自复位性能试验研究[J].土木建筑与环境工程,2016,38(3):18-24. (ZHAO Jun, ZHAO Qi, CHEN Jiwei. Experimental analysis of the self-centering performance of shear walls reinforced by CFRP and steel bars[J]. Journal of Civil, Architectural & Environmental Engineering, 2016, 38(3):18-24. (in Chinese))
[17] 建筑抗震设计规范: GB 50011—2010[S]. 北京:中国建筑工业出版社,2010.(Code for seismic design of buildings: GB 50011—2010[S]. Beijing: China Architecture & Building Press, 2010.(in Chinese))
[18] 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.(Specification for seismic test of buildings: JGJ/T 101—2015[S]. Beijing: China Architecture & Building Press, 2015.(in Chinese))
[19] 管仲国,李晓波,李建中.钢筋混凝土高墩多水准抗震性能试验[J].同济大学学报(自然科学版),2015,43(9):1295-1300. (GUAN Zhongguo, LI Xiaobo, LI Jianzhong. Experimental investigation on seismic performance of tall reinforced concrete bridge piers[J]. Journal of Tongji University (Natural Science),2015,43(9):1295-1300.(in Chinese))
[20] 肖全东,郭正兴.预制混凝土双板剪力墙的耗能能力[J].湖南大学学报(自然科学版),2014,41(9):35- 41. (XIAO Quandong, GUO Zhengxing. Energy dissipation of double-wall precast concrete shear walls[J]. Journal of Hunan University (Natural Science), 2014, 41(9):35- 41. (in Chinese))