配置CRB600H箍筋混凝土柱抗震抗剪性能研究
|
摘要
为研究配置CRB600H高强箍筋混凝土柱的抗震抗剪性能,进行了6根配置CRB600H箍筋混凝土柱的低周反复加载试验,对试件的破坏形态、滞回曲线、位移延性以及纵筋和箍筋的应变进行了分析。试验结果表明:高强箍筋混凝土柱均呈剪切破坏形态,失效时的位移延性系数均达到3.0以上,极限位移角达到或接近1/50;各试件中的箍筋在峰值荷载状态下均能达到屈服。将试验结果与我国《混凝土结构设计规范》(GB 50010—2010)以及美国规范ACI 318-14中抗震抗剪承载力计算公式的计算结果进行了对比。结果表明,采用上述规范公式计算高强箍筋混凝土柱的抗震抗剪承载力时,如果高强箍筋的强度取实际屈服强度,与试验结果相比计算结果偏高。根据试验与收集的39个配置高强箍筋混凝土柱的抗震抗剪试验结果,提出了适用于屈服强度为500～600MPa高强箍筋混凝土柱的抗震抗剪承载力计算公式,并建议了高强箍筋强度上限值的取值。
Low frequency cyclic loading tests for 6 concrete columns with CRB600 H stirrups were conducted to evaluate the seismic shear behavior of the concrete columns with CRB600 H stirrups. The failure patterns, hysteretic curves, displacement ductility, longitudinal reinforcement strain and stirrups strain of the specimens were studied. The experimental results show that the specimens of columns with high-strength stirrups(HSS) are in shear failure modes. The displacement ductility factor is above 3.0 when the column fails, and the ultimate displacement angle reaches or is close to 1/50. The HSS in each specimen can yield under the peak load condition. The experimental results were compared with the calculated results of the formulas for the seismic shear strength in Chinese code Code for design of concrete structures(GB 50010—2010) and American ACI 318-14 code. It shows that when calculating the seismic shear capacity of columns with HSS using the above formula, if the actual yield strength of HSS is taken, the calculation results are higher than the experimental results. Based on the results of 39 seismic and shear tests of columns with HSS which are from experiment and collection, the formulas for calculating the seismic and shear bearing capacity of columns with HSS of 500～600 MPa and the upper limit value of HSS were proposed.
Low frequency cyclic loading tests for 6 concrete columns with CRB600 H stirrups were conducted to evaluate the seismic shear behavior of the concrete columns with CRB600 H stirrups. The failure patterns, hysteretic curves, displacement ductility, longitudinal reinforcement strain and stirrups strain of the specimens were studied. The experimental results show that the specimens of columns with high-strength stirrups(HSS) are in shear failure modes. The displacement ductility factor is above 3.0 when the column fails, and the ultimate displacement angle reaches or is close to 1/50. The HSS in each specimen can yield under the peak load condition. The experimental results were compared with the calculated results of the formulas for the seismic shear strength in Chinese code Code for design of concrete structures(GB 50010—2010) and American ACI 318-14 code. It shows that when calculating the seismic shear capacity of columns with HSS using the above formula, if the actual yield strength of HSS is taken, the calculation results are higher than the experimental results. Based on the results of 39 seismic and shear tests of columns with HSS which are from experiment and collection, the formulas for calculating the seismic and shear bearing capacity of columns with HSS of 500～600 MPa and the upper limit value of HSS were proposed.
引文
[1] 高强箍筋混凝土结构技术规程:CECS 356∶2013[S].北京:中国计划出版社,2013.
[2] 约束混凝土柱组合结构梁框架结构技术规程:CECS 347∶2013 [S].北京:中国建筑工业出版社,2013.
[3] 桑田裕次,南宏一.600kgf/cm2 級高強度コンクリートを用いたRC柱の実用せん断設計式[J].福山大学工学部紀要,1995,19(1):117-128.
[4] 藤井稔己,林雅人,小丸達也他.高強度せん断補強筋を用いたRC 部材のせん断ひび割れ性状に関する実験的研究[J].福山大学工学部纪要,2011,34(2):95-102.
[5] RAZVI S R,SAATCIOGLU M.Strength and deformability of confined high-strength concrete columns[J].ACI Structural Journal,1994,91(6):1-10.
[6] HWANG S K,YUN H D,PARK W S,et al.Seismic performance of high-strength concrete columns[J].Magazine of Concrete Research,2005,57(5):247-260.
[7] 菅野俊介,长嶋俊雄,木村秀樹等.高強度横補強筋を用いた高強度コンクリート柱および梁の実験的研究[J].コンクリート工学年次論文報告集,1988,10(3):227-232.
[8] 韦雷,史庆轩.高强箍筋约束高强混凝土短柱受剪承载力试验研究[D].西安:西安建筑科技大学,2010.
[9] 史庆轩,杨坤,田园,等.高强箍筋约束高强混凝土柱抗震性能试验研究[J].土木工程学报,2011,44(12):9-17.
[10] 史庆轩,王朋,田园,等.高强箍筋约束高强混凝土短柱抗震性能试验研究[J].土木工程学报,2014,47(8):1-8.
[11] 孙治国,司炳君,王东升,等.高强箍筋高强混凝土柱抗震性能研究[J].工程力学,2010,27(5):128-136.
[12] 司炳君.普通及高强钢筋混凝土桥墩地震抗剪强度研究[D].大连:大连理工大学,2008.
[13] Building code requirements for structural concrete and commentary:ACI 318M-05[S].Farmington Hills:American Concrete Institute,2005.
[14] 混凝土结构设计规范:GB 50010—2002 [S].北京:中国建筑工业出版社,2002.
[15] 赵少伟,韩松,朱凯.600MPa级钢筋混凝土短柱抗震性能研究[J].工业建筑,2017,47(6):1-12.
[16] 刘彬,韩松,王学峰.配置高强钢筋混凝土短柱抗震性能研究[J].建筑与结构设计,2017,37(4):37-40.
[17] 混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2011.
[18] Building code requirements for structural concrete and commentary:ACI 318-14[S] Farmington Hills:American Concrete Institute,2014.
[19] Acceptance criteria for moment frams based on structural testing:ACI T1.1-01 [S] Farmington Hills:American Concrete Institute,2001.
[20] 蒋鑫.高强箍筋混凝土梁的抗震抗剪承载力研究[D].重庆:重庆大学,2018.
[21] 胡伟强.高强箍筋混凝土柱抗震抗剪性能试验研究[D].重庆:重庆大学,2018.
[22] 杨程.CRB550级箍筋混凝土梁的抗震性能对比试验研究[D].广州:华南理工大学,2010.
[23] 叶列平,王宇航.中、美规范钢筋混凝土梁斜截面受剪承载力的计算对比[J].建筑科学与工程学报,2008,25(1):88-95.
[24] 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.
[2] 约束混凝土柱组合结构梁框架结构技术规程:CECS 347∶2013 [S].北京:中国建筑工业出版社,2013.
[3] 桑田裕次,南宏一.600kgf/cm2 級高強度コンクリートを用いたRC柱の実用せん断設計式[J].福山大学工学部紀要,1995,19(1):117-128.
[4] 藤井稔己,林雅人,小丸達也他.高強度せん断補強筋を用いたRC 部材のせん断ひび割れ性状に関する実験的研究[J].福山大学工学部纪要,2011,34(2):95-102.
[5] RAZVI S R,SAATCIOGLU M.Strength and deformability of confined high-strength concrete columns[J].ACI Structural Journal,1994,91(6):1-10.
[6] HWANG S K,YUN H D,PARK W S,et al.Seismic performance of high-strength concrete columns[J].Magazine of Concrete Research,2005,57(5):247-260.
[7] 菅野俊介,长嶋俊雄,木村秀樹等.高強度横補強筋を用いた高強度コンクリート柱および梁の実験的研究[J].コンクリート工学年次論文報告集,1988,10(3):227-232.
[8] 韦雷,史庆轩.高强箍筋约束高强混凝土短柱受剪承载力试验研究[D].西安:西安建筑科技大学,2010.
[9] 史庆轩,杨坤,田园,等.高强箍筋约束高强混凝土柱抗震性能试验研究[J].土木工程学报,2011,44(12):9-17.
[10] 史庆轩,王朋,田园,等.高强箍筋约束高强混凝土短柱抗震性能试验研究[J].土木工程学报,2014,47(8):1-8.
[11] 孙治国,司炳君,王东升,等.高强箍筋高强混凝土柱抗震性能研究[J].工程力学,2010,27(5):128-136.
[12] 司炳君.普通及高强钢筋混凝土桥墩地震抗剪强度研究[D].大连:大连理工大学,2008.
[13] Building code requirements for structural concrete and commentary:ACI 318M-05[S].Farmington Hills:American Concrete Institute,2005.
[14] 混凝土结构设计规范:GB 50010—2002 [S].北京:中国建筑工业出版社,2002.
[15] 赵少伟,韩松,朱凯.600MPa级钢筋混凝土短柱抗震性能研究[J].工业建筑,2017,47(6):1-12.
[16] 刘彬,韩松,王学峰.配置高强钢筋混凝土短柱抗震性能研究[J].建筑与结构设计,2017,37(4):37-40.
[17] 混凝土结构设计规范:GB 50010—2010[S].北京:中国建筑工业出版社,2011.
[18] Building code requirements for structural concrete and commentary:ACI 318-14[S] Farmington Hills:American Concrete Institute,2014.
[19] Acceptance criteria for moment frams based on structural testing:ACI T1.1-01 [S] Farmington Hills:American Concrete Institute,2001.
[20] 蒋鑫.高强箍筋混凝土梁的抗震抗剪承载力研究[D].重庆:重庆大学,2018.
[21] 胡伟强.高强箍筋混凝土柱抗震抗剪性能试验研究[D].重庆:重庆大学,2018.
[22] 杨程.CRB550级箍筋混凝土梁的抗震性能对比试验研究[D].广州:华南理工大学,2010.
[23] 叶列平,王宇航.中、美规范钢筋混凝土梁斜截面受剪承载力的计算对比[J].建筑科学与工程学报,2008,25(1):88-95.
[24] 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.