不同构造异形截面多腔钢管混凝土分叉柱抗震性能试验
|
摘要
为研究截面加强构造对异形截面多腔钢管混凝土分叉柱长轴方向抗震性能的影响,进行了5个试件在轴向压力作用下,水平荷载往复加载2次的低周反复荷载试验。截面构造主要包括1种基本构造和4种加强构造,加强构造主要有,上柱及下柱分叉面下一层纵向受力钢板加厚构造,下柱分叉面下一层增加腔体构造,及在多腔加强基础上角部腔体内设置角钢或圆钢管的加强构造。试验结果表明:试件破坏大多发生在下柱下水平隔板处,表现为焊缝边缘热影响区钢板开裂及延伸引起的钢板撕裂;焊缝布置位置是影响试件破坏形态的主要因素;角部腔体内设置角钢或圆钢管构造效果最好,增厚钢板构造效果次之,多腔加强构造效果最差;各试件承载力退化不明显,上柱变形、耗能较下柱高;各试件的屈服位移角均值约为1/101,峰值荷载对应位移角约为1/42,最大弹塑性位移角约为1/29,可用于超高层巨型框架结构设计。
In order to study the influence of cross-sectional constructions on seismic behavior of special-shaped CFT columns with multiple cavities in the long axis direction, five specimens were tested under the axial compression and twice loaded low-cyclic horizontal loads. There are one basic construction and four enhanced constructions in the cross-sectional constructions. The four enhanced constructions include the enhancement of increasing the thickness of the longitudinal steel plate in the lower layer of the lower column under bifurcate plane and the upper column, the enhancement of adding the cavities at the lower layer under bifurcate plane, and the enhancements of additionally installing steel angles or steel tubes in the corner cavities apart from the enhancement of adding the cavities. The test results show that most damages of specimens occur at the location of horizontal steel plate of the lower column, and appear to be cracking of steel plate in heat-affected zones at the weld edges and tearing of steel plate due to the propagation of the cracks. The location arrangement of welds shall be one of the major factors influencing the failure patterns of the specimens. The enhancement effect of installing steel angles or steel tube in the corner cavities shall be the best, the next is that of increasing the thickness of steel plate, while the worst is that of adding multiple cavities. The degradations of bearing capacity of all the specimens are not remarkable. The deformation and energy dissipation ability of the upper column is better than that of lower column. The average value of yield drift ratio of all the specimens is 1/101, the drift ratio corresponding to the peak load is about 1/42, and the maximum elasto-plastic drift ratio is about 1/29, indicating that the columns proposed in this work can be used in the design of mega frame structures of super high-rise buildings.
In order to study the influence of cross-sectional constructions on seismic behavior of special-shaped CFT columns with multiple cavities in the long axis direction, five specimens were tested under the axial compression and twice loaded low-cyclic horizontal loads. There are one basic construction and four enhanced constructions in the cross-sectional constructions. The four enhanced constructions include the enhancement of increasing the thickness of the longitudinal steel plate in the lower layer of the lower column under bifurcate plane and the upper column, the enhancement of adding the cavities at the lower layer under bifurcate plane, and the enhancements of additionally installing steel angles or steel tubes in the corner cavities apart from the enhancement of adding the cavities. The test results show that most damages of specimens occur at the location of horizontal steel plate of the lower column, and appear to be cracking of steel plate in heat-affected zones at the weld edges and tearing of steel plate due to the propagation of the cracks. The location arrangement of welds shall be one of the major factors influencing the failure patterns of the specimens. The enhancement effect of installing steel angles or steel tube in the corner cavities shall be the best, the next is that of increasing the thickness of steel plate, while the worst is that of adding multiple cavities. The degradations of bearing capacity of all the specimens are not remarkable. The deformation and energy dissipation ability of the upper column is better than that of lower column. The average value of yield drift ratio of all the specimens is 1/101, the drift ratio corresponding to the peak load is about 1/42, and the maximum elasto-plastic drift ratio is about 1/29, indicating that the columns proposed in this work can be used in the design of mega frame structures of super high-rise buildings.
引文
[1]杨蔚彪,宫贞超,常为华,等.中国尊大厦巨型柱分叉节点性能研究[J].建筑结构,2015(18):6-12(Yang Weibiao,Gong Zhenchao,Chang Weihua,et al.Performance study on branching node of mega column in China Zun Tower[J].Building Structure,2015(18):6-12(in Chinese))
[2]王丹,吕西林.T形、L形钢管混凝土柱抗震性能试验研究[J].建筑结构学报,2005,26(4):39-44(Wang Dan,Lv Xilin.Experimental study on seismic behavior of concrete-filled steel T-section and L-section columns[J].Journal of Building Structures,2005,26(4):39-44(in Chinese))
[3]李学平,吕西林.T、L形钢管混凝土柱的本构模型及非线性分析研究[J].建筑钢结构进展,2008,10(4):56-62(Li Xueping,Lv Xilin.Modelling and experimental verification on concrete-filled steel tubular columns with T or L section[J].Progress in Steel Building Structures,2008,10(4):56-62(in Chinese))
[4]林震宇,沈祖炎,罗金辉,等.L形钢管混凝土轴压短柱力学性能研究[J].建筑钢结构进展,2009,11(6):14-19(Lin Zhenyu,Shen Zuyan,Luo Jinhui,et al.Study on behavior of L-shaped concrete-filled steel tube stubs subjected to axial compression[J].Progress in Steel Building Structures,2009,11(6):14-19(in Chinese))
[5]左志亮,蔡健,刘明峰,等.带约束拉杆T形钢管混凝土短柱偏压试验研究[J].建筑结构学报,2011,32(8):79-89(Zuo Zhiliang,Cai Jian,Liu Mingfeng,et al.Experimental study of T-shaped CFT stub columns with binding bars subjected to eccentric load[J].Journal of Building Structures,2011,32(8):79-89(in Chinese))
[6]蔡健,左志亮,谢小东,等.带约束拉杆异形截面钢管内核心混凝土等效单轴本构关系[J].建筑结构学报,2011,32(12):186-194(Cai Jian,Zuo Zhiliang,Xie Xiaodong,et al.Equivalent uniaxial constitutive relationship for core concrete of specially-shaped steel tubular column with bending bars[J].Journal of Building Structures,2011,32(12):186-194(in Chinese))
[7]杜国锋,宋鑫,余思平.内置钢骨组合L形截面钢管混凝土短柱轴压性能试验研究[J].建筑结构学报,2013,34(8):82-89(Du Guofeng,Song Xin,Yu Siping.Experimental research on axially loaded composite L-section steel tubular short columns filled with steel-reinforced concrete[J].Journal of Building Structures,2013,34(8):82-89(in Chinese))
[8]屠永清,刘林林,叶英华.多室式钢管混凝土T形短柱的非线性分析[J].工程力学,2012,29(1):134-140(Tu Yongqing,Liu Linlin,Ye Yinghua.Nonlinear analysis of multi-cell T-shaped concrete-filled steel tubular stub columns[J].Engineering Mechanics,2012,29(1):134-140(in Chinese))
[9]曹万林,王智慧,彭斌,等.腔内带钢筋笼多腔钢管混凝土巨型柱轴压性能试验研究[J].结构工程师,2012,28(3):135-140(Cao Wanlin,Wang Zhihui,Peng Bin,et al.Experimental study on axial compression performance of multi-cell CFST Mega-columns with steel reinforcement cage inside[J].Structural Engineers,2012,28(3):135-140(in Chinese))
[10]曹万林,徐萌萌,董宏英,等.不同构造五边形钢管混凝土巨型柱轴压性能计算分析[J].工程力学,2015,32(6):99-108(Cao Wanlin,Xu Mengmeng,Dong Hongying,et al.Analysis on axial compression behavior of pentagonal CFST mega columns[J].Engineering Mechanics,2015,32(6):99-108(in Chinese))
[11]JGJ 3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010(JGJ 3—2010 Technical specification for concrete structures of tall building[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[12]JGJ 138—2016组合结构设计规范[S].北京:中国建筑工业出版社,2016(JGJ 138—2016 Code for design of composite structures[S].Beijing:China Architecture&Building Press,2016(in Chinese))
[13]GB 50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010(GB 50010—2010 Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[14]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003(Guo Zhenhai,Shi Xudong.Reinforced concrete theory and analyse[M].Beijing:Tinghua University Press,2003(in Chinses))
[15]Park R.Evaluation of ductility of structures and structural assemblages from laboratory testing[J].Bulletin of the New Zealand National Society for Earthquake Engineering,1989,22(3):155-166
[2]王丹,吕西林.T形、L形钢管混凝土柱抗震性能试验研究[J].建筑结构学报,2005,26(4):39-44(Wang Dan,Lv Xilin.Experimental study on seismic behavior of concrete-filled steel T-section and L-section columns[J].Journal of Building Structures,2005,26(4):39-44(in Chinese))
[3]李学平,吕西林.T、L形钢管混凝土柱的本构模型及非线性分析研究[J].建筑钢结构进展,2008,10(4):56-62(Li Xueping,Lv Xilin.Modelling and experimental verification on concrete-filled steel tubular columns with T or L section[J].Progress in Steel Building Structures,2008,10(4):56-62(in Chinese))
[4]林震宇,沈祖炎,罗金辉,等.L形钢管混凝土轴压短柱力学性能研究[J].建筑钢结构进展,2009,11(6):14-19(Lin Zhenyu,Shen Zuyan,Luo Jinhui,et al.Study on behavior of L-shaped concrete-filled steel tube stubs subjected to axial compression[J].Progress in Steel Building Structures,2009,11(6):14-19(in Chinese))
[5]左志亮,蔡健,刘明峰,等.带约束拉杆T形钢管混凝土短柱偏压试验研究[J].建筑结构学报,2011,32(8):79-89(Zuo Zhiliang,Cai Jian,Liu Mingfeng,et al.Experimental study of T-shaped CFT stub columns with binding bars subjected to eccentric load[J].Journal of Building Structures,2011,32(8):79-89(in Chinese))
[6]蔡健,左志亮,谢小东,等.带约束拉杆异形截面钢管内核心混凝土等效单轴本构关系[J].建筑结构学报,2011,32(12):186-194(Cai Jian,Zuo Zhiliang,Xie Xiaodong,et al.Equivalent uniaxial constitutive relationship for core concrete of specially-shaped steel tubular column with bending bars[J].Journal of Building Structures,2011,32(12):186-194(in Chinese))
[7]杜国锋,宋鑫,余思平.内置钢骨组合L形截面钢管混凝土短柱轴压性能试验研究[J].建筑结构学报,2013,34(8):82-89(Du Guofeng,Song Xin,Yu Siping.Experimental research on axially loaded composite L-section steel tubular short columns filled with steel-reinforced concrete[J].Journal of Building Structures,2013,34(8):82-89(in Chinese))
[8]屠永清,刘林林,叶英华.多室式钢管混凝土T形短柱的非线性分析[J].工程力学,2012,29(1):134-140(Tu Yongqing,Liu Linlin,Ye Yinghua.Nonlinear analysis of multi-cell T-shaped concrete-filled steel tubular stub columns[J].Engineering Mechanics,2012,29(1):134-140(in Chinese))
[9]曹万林,王智慧,彭斌,等.腔内带钢筋笼多腔钢管混凝土巨型柱轴压性能试验研究[J].结构工程师,2012,28(3):135-140(Cao Wanlin,Wang Zhihui,Peng Bin,et al.Experimental study on axial compression performance of multi-cell CFST Mega-columns with steel reinforcement cage inside[J].Structural Engineers,2012,28(3):135-140(in Chinese))
[10]曹万林,徐萌萌,董宏英,等.不同构造五边形钢管混凝土巨型柱轴压性能计算分析[J].工程力学,2015,32(6):99-108(Cao Wanlin,Xu Mengmeng,Dong Hongying,et al.Analysis on axial compression behavior of pentagonal CFST mega columns[J].Engineering Mechanics,2015,32(6):99-108(in Chinese))
[11]JGJ 3—2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2010(JGJ 3—2010 Technical specification for concrete structures of tall building[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[12]JGJ 138—2016组合结构设计规范[S].北京:中国建筑工业出版社,2016(JGJ 138—2016 Code for design of composite structures[S].Beijing:China Architecture&Building Press,2016(in Chinese))
[13]GB 50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010(GB 50010—2010 Code for design of concrete structures[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[14]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003(Guo Zhenhai,Shi Xudong.Reinforced concrete theory and analyse[M].Beijing:Tinghua University Press,2003(in Chinses))
[15]Park R.Evaluation of ductility of structures and structural assemblages from laboratory testing[J].Bulletin of the New Zealand National Society for Earthquake Engineering,1989,22(3):155-166