中国钢筋混凝土柱的位移角统计分析
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摘要
根据收集到的80根中国的钢筋混凝土柱在固定轴向荷载和水平反复荷载作用下的试验结果,分析回归出试验柱的延性系数和各位移角与剪跨比、轴压比、配箍特征值之间的关系.结果表明:钢筋混凝土柱的延性系数随着轴压比和剪跨比的增加而减小,随配箍特征值的增加而增加,且都近似呈线性关系;随着轴压比的增大,屈服位移角和极限位移角均增大,最大位移角则随着轴压比的增大而减小;随着剪跨比的增大,屈服位移角、最大位移角和极限位移角均增大;随着配箍特征值的增大,屈服位移角、最大位移角和极限位移角亦相应增大.通过对试验柱位移角进行频数统计分析可知,我国建筑抗震设计安全水准偏低,现行规范的屈服位移角和极限位移角限值有提高的余地.
Based on the collected test results of 80 Chinese reinforced concrete columns under constant axial load and horizontal cyclic load,the relation of ductility coefficients and various displacement angles to shear span ratios,axial compression ratios and transverse reinforcement characteristic values are regressed.The results indicate that ductility coefficients of reinforced concrete columns linearly decrease with axial compression ratios and shear span ratios and increase with transverse reinforcement characteristic values.Yield displacement angles and the ultimate displacement angles increase with axial compression ratios,but maximal displacement angles loading decrease with axial compression ratios.Yield displacement angles,maximal displacement angles,and ultimate displacement angles increase with shear span ratios and transverse reinforcement characteristic values.By the frequency statistic research on displacement angles of reinforced concrete columns,it is found that the Chinese construction earthquake-resistance design safety criteria is relatively low,and the yield displacement angles and the ultimate displacement angles in current codes are capable to increase.
Based on the collected test results of 80 Chinese reinforced concrete columns under constant axial load and horizontal cyclic load,the relation of ductility coefficients and various displacement angles to shear span ratios,axial compression ratios and transverse reinforcement characteristic values are regressed.The results indicate that ductility coefficients of reinforced concrete columns linearly decrease with axial compression ratios and shear span ratios and increase with transverse reinforcement characteristic values.Yield displacement angles and the ultimate displacement angles increase with axial compression ratios,but maximal displacement angles loading decrease with axial compression ratios.Yield displacement angles,maximal displacement angles,and ultimate displacement angles increase with shear span ratios and transverse reinforcement characteristic values.By the frequency statistic research on displacement angles of reinforced concrete columns,it is found that the Chinese construction earthquake-resistance design safety criteria is relatively low,and the yield displacement angles and the ultimate displacement angles in current codes are capable to increase.
引文
[1]GB 50010-2002,混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.GB 50010-2002,Code for Design of Concrete Structures[S].Beijing:China Architecture and Building Press,2002.
[2]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bo-long.Structure Seismic Test[M].Beijing:Seismological Press,1989.
[3]GB 50152-92,混凝土结构试验方法标准[S].北京:中国建筑工业出版社,1992.GB 50152-92,Testing Methods of Concrete Structure[S].Beijing:China Architecture and Building Press,1992.
[4]蔡健,周靖,方小丹.钢筋混凝土框架抗震位移延性系数研究[J].工程抗震与加固改造,2005,27(3):2-6.CAI Jian,ZHOU Jing,FANG Xiao-dan.Study on Seismic Displacement Ductility Factor of Reinforced Concrete Frame Structure[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):2-6.
[5]过镇海,时旭东.钢筋混凝土原理与分析[M].北京:清华大学出版社,2003.GUO Zhen-hai,SHI Xu-dong.Reinforced Concrete Theory and Analyse[M].Beijing:Tsinghua University Press,2003.
[6]张国军,吕西林,刘伯权.钢筋混凝土框架柱在轴压比超限时抗震性能的研究[J].土木工程学报,2006,29(3):47-54.ZHANG Guo-jun,LV Xi-lin,LIU Bo-quan.Seismic Behavior of Reinforced Concrete Frame Columns with Excessive axial CompressionRatios[J].China Civil Engineering Journal,2006,29(3):47-54.
[7]张国军,吕西林,刘伯权.轴压比超限时框架柱的恢复力模型研究[J].建筑结构学报,2006,27(1):90-98.ZHANG Guo-jun,LV Xi-lin,LIU Bo-quan.Research on Restoring Force Models of Frame Columns with Ultra-Limited Axial Com-pression Ratio[J].Journal of Building Structures,2006,27(1):90-98.
[8]周涌波,张庆华.钢筋混凝土框架柱抗剪承载力分析[J].北方交通,2006,25(6):106-107.ZHOU Yong-bo,ZHANG Qing-hua.Analyse About Shear Bearing Capacity of Reinforced Concrete Frame Columns[J].NorthernCommuni Cations,2006,25(6):106-107.
[9]朱敬锋,于志军,于德湖.框架柱混凝土轴压比限制的研究[J].青岛理工大学学报,2007,28(6):26-30.ZHU Jing-feng,YU Zhi-jun,YU De-hu.Study on the Ultimate Axial Compression Ratio for RC Columns[J].Journal of QingdaoTechnological University,2007,28(6):26-30.
[2]朱伯龙.结构抗震试验[M].北京:地震出版社,1989.ZHU Bo-long.Structure Seismic Test[M].Beijing:Seismological Press,1989.
[3]GB 50152-92,混凝土结构试验方法标准[S].北京:中国建筑工业出版社,1992.GB 50152-92,Testing Methods of Concrete Structure[S].Beijing:China Architecture and Building Press,1992.
[4]蔡健,周靖,方小丹.钢筋混凝土框架抗震位移延性系数研究[J].工程抗震与加固改造,2005,27(3):2-6.CAI Jian,ZHOU Jing,FANG Xiao-dan.Study on Seismic Displacement Ductility Factor of Reinforced Concrete Frame Structure[J].Earthquake Resistant Engineering and Retrofitting,2005,27(3):2-6.
[5]过镇海,时旭东.钢筋混凝土原理与分析[M].北京:清华大学出版社,2003.GUO Zhen-hai,SHI Xu-dong.Reinforced Concrete Theory and Analyse[M].Beijing:Tsinghua University Press,2003.
[6]张国军,吕西林,刘伯权.钢筋混凝土框架柱在轴压比超限时抗震性能的研究[J].土木工程学报,2006,29(3):47-54.ZHANG Guo-jun,LV Xi-lin,LIU Bo-quan.Seismic Behavior of Reinforced Concrete Frame Columns with Excessive axial CompressionRatios[J].China Civil Engineering Journal,2006,29(3):47-54.
[7]张国军,吕西林,刘伯权.轴压比超限时框架柱的恢复力模型研究[J].建筑结构学报,2006,27(1):90-98.ZHANG Guo-jun,LV Xi-lin,LIU Bo-quan.Research on Restoring Force Models of Frame Columns with Ultra-Limited Axial Com-pression Ratio[J].Journal of Building Structures,2006,27(1):90-98.
[8]周涌波,张庆华.钢筋混凝土框架柱抗剪承载力分析[J].北方交通,2006,25(6):106-107.ZHOU Yong-bo,ZHANG Qing-hua.Analyse About Shear Bearing Capacity of Reinforced Concrete Frame Columns[J].NorthernCommuni Cations,2006,25(6):106-107.
[9]朱敬锋,于志军,于德湖.框架柱混凝土轴压比限制的研究[J].青岛理工大学学报,2007,28(6):26-30.ZHU Jing-feng,YU Zhi-jun,YU De-hu.Study on the Ultimate Axial Compression Ratio for RC Columns[J].Journal of QingdaoTechnological University,2007,28(6):26-30.
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