带暗柱钢筋砼等肢L形柱轴压比限值调整系数研究
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摘要
至今,带暗柱的等肢L形柱轴压比限值调整系数尚未得到充分研究,因而限制了其在工程中的应用。为此,针对等肢L形柱,采用非线性全过程数值分析方法,通过C++编制程序,并使用相关实验数据对程序进行了验证;在不同抗震等级、肢高纵筋配筋率及体积配箍率下,计算了带暗柱与不带暗柱钢筋混凝土等肢L形柱的截面曲率延性比,并根据《混凝土异形柱结构技术规程》给出的不同抗震等级下异形柱截面曲率延性比的要求,确定了各抗震等级下带暗柱与不带暗柱的等肢L形柱的轴压比限值及其比值;最后通过拟合分析法及调整系数法确定了带暗柱等肢L形柱轴压比限值的调整系数。
How to adjust the limit value of axial compression ratio of the equi-limb L-shaped column with concealed column has not been researched adequately,so that it affects the engineering application.Based on the method of the nonlinear analysis of complete response process,programming with C++ program were done and varified by related experimental data;and cross-section curvature ductility ratios of equi-limb L-shaped column with and without concealed column for different seismic grades and limb height conditions were calculated;according to curvature ductility ratio demand of each seismic resistance grade in "Technical Specification for Concrete Structures with Specially Shaped Column",the ratios of limit value of L-shaped column with and without the concealed column were calculated;finally the adjustment coefficients of limit value of axial compression ratio of equi-limb L-shaped columns with concealed column were determined through regression analysis and the adjustment coefficient method.
How to adjust the limit value of axial compression ratio of the equi-limb L-shaped column with concealed column has not been researched adequately,so that it affects the engineering application.Based on the method of the nonlinear analysis of complete response process,programming with C++ program were done and varified by related experimental data;and cross-section curvature ductility ratios of equi-limb L-shaped column with and without concealed column for different seismic grades and limb height conditions were calculated;according to curvature ductility ratio demand of each seismic resistance grade in "Technical Specification for Concrete Structures with Specially Shaped Column",the ratios of limit value of L-shaped column with and without the concealed column were calculated;finally the adjustment coefficients of limit value of axial compression ratio of equi-limb L-shaped columns with concealed column were determined through regression analysis and the adjustment coefficient method.
引文
[1]JGJ149-2006混凝土异形柱结构技术规程[S].JGJ149-2006,Technical specification for concrete structures with specially shaped columns[S].
[2]赵艳静,陈云霞,于顺泉.钢筋混凝土异形截面框架柱轴压比限值的研究[J].天津大学学报,2004,37(7):600-604.Zhao Yanjing,Chengxunxia,Yu Shunquan.Study of the limit value of the axial compressive ratio of reinforced concrete special-shapedcross-section of frame column[J].Tianjin University Journals,2004,37(7):600-604.
[3]赵艳静,李献忠,陈云霞.四级抗震等级时钢筋混凝土异形柱轴压比限值的研究[J].建筑结构学报,2004,25(3):58-62.Zhan Yanjing,Li Xianzhong,Chen Yunxia.Study of the limit value of the axial compressive ratio of reinforced concrete special-shaped columninthe fourth class of anti-earthquake grades[J].Journal of Building Structures,2004,25(3):58-62.
[4]王依群,许怡懂,陈云霞.钢筋混凝土异形柱的轴压比限值与配箍构造[J].天津大学学报,2006,39(3):295-300.Wang Yiqun,Xu Yidong,Chen Xunxia.The limit value of the axial compressive ratio of reinforced concrete special-shaped column and Structur-al requirements of stirrup[J].Tianjin University Journals,2006,39(3):295-300.
[5]黄承逵,王丹,崔博.钢筋混凝土异形柱轴压比限值研究[J].大连理工大学学报,2002,42(2):213-217.Huang Chengkui,Wang Dan,Cui Bo.Study of the limit value of the axial compressive ratio of reinforced concrete special-shaped column[J].Journal of dalian university of technology,2002,42(2):213-217.
[6]王丹,黄承逵,刘明.L、T形柱轴压比限值研究[J].工程力学,2003,20(3):134-141.Wang Dan,Huang Chengkui,Liu Ming.Study of the limit value of the axial compressive ratio of reinforced concrete L、T-shaped column[J].Engineering mechanics,2003,20(3):134-141.
[7]曹万林,胡国振,崔立长等.钢筋混凝土带暗柱异形柱抗震性能试验及分析[J].建筑结构学报,2002,23(1):16-26.Cao Wanlin,Hu Zhenguo,Cui Linchang et al.Experiment and Analysis of Seismic Behavior of the+,L,T—shaped Columns with Concealed Col-umns[J].Journal of Building Structures,2002,23(1):16-26.
[8]Park R,Nigel P M M J.Ductility of square-confined concrete columns[J].J Struct Div,ASCE,1982,108(ST4):929-950.
[9]宋佳璐,张翼,张新培等.保护层厚度对钢筋混凝土等肢异形柱延性性能的影响[J].世界地震工程,2009,25(1):131-137.Song Jialu,Zhang Yi,Zhang Xinpei et al.Effect of concrete casing thickness on ductility of equi-limb specially shaped columns[J].WorldEarthquake Engineering,2009,25(1):131-137.
[2]赵艳静,陈云霞,于顺泉.钢筋混凝土异形截面框架柱轴压比限值的研究[J].天津大学学报,2004,37(7):600-604.Zhao Yanjing,Chengxunxia,Yu Shunquan.Study of the limit value of the axial compressive ratio of reinforced concrete special-shapedcross-section of frame column[J].Tianjin University Journals,2004,37(7):600-604.
[3]赵艳静,李献忠,陈云霞.四级抗震等级时钢筋混凝土异形柱轴压比限值的研究[J].建筑结构学报,2004,25(3):58-62.Zhan Yanjing,Li Xianzhong,Chen Yunxia.Study of the limit value of the axial compressive ratio of reinforced concrete special-shaped columninthe fourth class of anti-earthquake grades[J].Journal of Building Structures,2004,25(3):58-62.
[4]王依群,许怡懂,陈云霞.钢筋混凝土异形柱的轴压比限值与配箍构造[J].天津大学学报,2006,39(3):295-300.Wang Yiqun,Xu Yidong,Chen Xunxia.The limit value of the axial compressive ratio of reinforced concrete special-shaped column and Structur-al requirements of stirrup[J].Tianjin University Journals,2006,39(3):295-300.
[5]黄承逵,王丹,崔博.钢筋混凝土异形柱轴压比限值研究[J].大连理工大学学报,2002,42(2):213-217.Huang Chengkui,Wang Dan,Cui Bo.Study of the limit value of the axial compressive ratio of reinforced concrete special-shaped column[J].Journal of dalian university of technology,2002,42(2):213-217.
[6]王丹,黄承逵,刘明.L、T形柱轴压比限值研究[J].工程力学,2003,20(3):134-141.Wang Dan,Huang Chengkui,Liu Ming.Study of the limit value of the axial compressive ratio of reinforced concrete L、T-shaped column[J].Engineering mechanics,2003,20(3):134-141.
[7]曹万林,胡国振,崔立长等.钢筋混凝土带暗柱异形柱抗震性能试验及分析[J].建筑结构学报,2002,23(1):16-26.Cao Wanlin,Hu Zhenguo,Cui Linchang et al.Experiment and Analysis of Seismic Behavior of the+,L,T—shaped Columns with Concealed Col-umns[J].Journal of Building Structures,2002,23(1):16-26.
[8]Park R,Nigel P M M J.Ductility of square-confined concrete columns[J].J Struct Div,ASCE,1982,108(ST4):929-950.
[9]宋佳璐,张翼,张新培等.保护层厚度对钢筋混凝土等肢异形柱延性性能的影响[J].世界地震工程,2009,25(1):131-137.Song Jialu,Zhang Yi,Zhang Xinpei et al.Effect of concrete casing thickness on ductility of equi-limb specially shaped columns[J].WorldEarthquake Engineering,2009,25(1):131-137.
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