SRC-RC竖向混合结构转换柱侧移刚度试验研究
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摘要
对16根转换柱试件和1根钢筋混凝土柱对比试件采用"建研式"加载设备完成了低周反复荷载试验,用于研究转换柱的基本抗震行为。建立了转换柱中钢与混凝土的相互作用方式及型钢的受剪模型,并以此为基础分析了型钢延伸高度、型钢配钢率、箍筋配箍率及轴压比对转换柱侧移刚度及侧移刚度退化速率的影响。采用反弯点法计算了转换柱的弹性侧移刚度。通过对试验数据的回归分析,同时引入截面抗弯刚度折减系数用于考虑裂缝及混凝土塑性发展的影响,得到了转换柱屈服点侧移刚度的计算公式,计算值与试验值吻合。
Experiments of 16 transfer columns and one reinforced concrete column under low cyclic reversed loading were carried out to research the seismic performance of transfer columns.An interaction model between concrete and shape steel was established.The shear model of shape steel was also brought forward for the analysis on the lateral stiffness of the transfer column in a SRC-RC hybrid structure.The lateral stiffness of a transfer column and the degeneration ratio of lateral stiffness are affected by the parameters of volumetric ratios of stirrups,the axial compressive ratio,area ratio of shape steel and extension length of shape steel.A contraflexure point method was employed to calculate the lateral stiffness of elasticity.Through the regression analysis of test data,the formula for lateral stiffness in a yield condition was put forward,which takes the plastic development of concrete and cracks into account.The calculated results agree well with the test data.
Experiments of 16 transfer columns and one reinforced concrete column under low cyclic reversed loading were carried out to research the seismic performance of transfer columns.An interaction model between concrete and shape steel was established.The shear model of shape steel was also brought forward for the analysis on the lateral stiffness of the transfer column in a SRC-RC hybrid structure.The lateral stiffness of a transfer column and the degeneration ratio of lateral stiffness are affected by the parameters of volumetric ratios of stirrups,the axial compressive ratio,area ratio of shape steel and extension length of shape steel.A contraflexure point method was employed to calculate the lateral stiffness of elasticity.Through the regression analysis of test data,the formula for lateral stiffness in a yield condition was put forward,which takes the plastic development of concrete and cracks into account.The calculated results agree well with the test data.
引文
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[9]邓海,吕鹏,孙素景.梁在间接加载情况下附加横向钢筋设计探讨[J].石家庄铁道学院学报,2003,16(3):45―47.Deng Hai,LüPeng,Sun Sujing.Additional crosswisereinforcing steel in reinforced concrete beams of indirectloading[J].Journal of Shijiazhuang Railway Institute,2003,16(3):45―47.(in Chinese)
[10]李哲刚.间接加载下钢筋混凝土转换梁梁腹开裂的试验研究[D].重庆:重庆大学,2002.Li Zhegang.Experiments on web cracking of RC girdersunder indirect static loading[D].Chongqing:ChongqingUniversity,2002.(in Chinese)
[11]伍凯,薛建阳,赵鸿铁.短柱型破坏的型钢混凝土-混凝土转换柱剪切受力性能研究[J].工业建筑,2010,40(11):51―54.Wu Kai,Xue Jianyang,Zhao Hongtie.Study on shearperformance of SRC-RC transfer column with shortcolumn failure pattern[J].Industrial Construction,2010,40(11):51―54.(in Chinese)
[2]薛建阳,赵鸿铁.型钢混凝土粘结滑移理论及其工程应用[M].北京:科学出版社,2007:1―16.Xue Jianyang,Zhao Hongtie.Bond-slip theory of steelreinforced concrete and engineering application[M].Beijing:Science Press,2007:1―16.(in Chinese)
[3]刘大海,杨翠如.型钢、钢管混凝土高楼计算和构造[M].北京:中国建筑工业出版社,2003:1―12.Liu Dahai,Yang Cuiru.Calculation and conformation ofSRC and CFST high-rising buildings[M].Beijing:ChinaArchitecture and Building Press,2003:1―12.(inChinese)
[4]戴国亮,蒋永生,傅传国,梁书亭.高层型钢混凝土底部大空间转换层结构性能研究[J].土木工程学报,2003,36(4):24―32.Dai Guoliang,Jiang Yongsheng,Fu Chuanguo,LiangShuting.Experimental study on aseismic behaviors oftransfer story with steel reinforced concrete in low storiesof large space[J].China Civil Engineering Journal,2003,36(4):24―32.(in Chinese)
[5]鈴木英之,西原寛,松崎育弘.SRC造からRC造へ構造形式が切り替わる柱のせん断性状[C]//日本建築学会大会学術講演梗概集(中国),1999:1069―1070.Suzuki H,Nishihara H,Matsuzaki Y.Shear performanceof the column where structural form changes from SRCto RC[C]//Chyugoku:Summaries of Technical Papers ofAnnual Meeting,Architectural Institute of Japan,1999:1069―1070.(in Japanese)
[6]山口美有紀,木村潤一,鄭真安,河野昭彦.SRC-RC混合柱部材の骨格曲線モデル[C]//日本建筑学大会学術講演梗概集,北海道,2004:1177―1178.Yamaguchi M,Kimura J,Chung J,KAWANO Akihiko.Skeleton curve model of SRC-RC mixed columns[C]//Hokkaidou:Summaries of Technical Papers of AnnualMeeting,Architectural Institute of Japan 2004:1177―1178.(in Japanese)
[7]今野修,今泉隆之,山本憲一郎,南宏一.超高層建筑物における下層階へのSRC構造適用に関する実験的研究,その1SRC柱の靭性性能に関する実験計画[C]//日本建筑学大会学術講演梗概集,九州,1998:1029―1030.Kon-No S,Imaizumi T,Yamamoto K,MINAMI Koichi.Experimental study on high-rise building with lowerfloor composed of SRC structure.Part1:Outline of thetests about deformation capacity of SRC columns[C]//Kyushu:Summaries of Technical Papers of AnnualMeeting,Architectural Institute of Japan,1998:1029―1030.(in Japanese)
[8]木村潤一,新宮義信.繰返しせん断を受ける混合部材の構造性能[C]//日本建築学会大会学術講演梗概,九州,1998:1067―1068.Kimura J,Shingu Y.Structural performance of SRC-RCmixed member under cyclic bending moment and shear[C]//Kyushu:Summaries of Technical Papers of AnnualMeeting,Architectural Institute of Japan,1998:1067―1068.(in Japanese)
[9]邓海,吕鹏,孙素景.梁在间接加载情况下附加横向钢筋设计探讨[J].石家庄铁道学院学报,2003,16(3):45―47.Deng Hai,LüPeng,Sun Sujing.Additional crosswisereinforcing steel in reinforced concrete beams of indirectloading[J].Journal of Shijiazhuang Railway Institute,2003,16(3):45―47.(in Chinese)
[10]李哲刚.间接加载下钢筋混凝土转换梁梁腹开裂的试验研究[D].重庆:重庆大学,2002.Li Zhegang.Experiments on web cracking of RC girdersunder indirect static loading[D].Chongqing:ChongqingUniversity,2002.(in Chinese)
[11]伍凯,薛建阳,赵鸿铁.短柱型破坏的型钢混凝土-混凝土转换柱剪切受力性能研究[J].工业建筑,2010,40(11):51―54.Wu Kai,Xue Jianyang,Zhao Hongtie.Study on shearperformance of SRC-RC transfer column with shortcolumn failure pattern[J].Industrial Construction,2010,40(11):51―54.(in Chinese)