平板柱脚对轴压柱转动约束的研究
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摘要
目前,我国《钢结构设计规范》(GB50017-2003)对于采用平板柱脚的轴心受压柱,柱脚均当作理想铰接对待,未考虑柱脚对柱的转动约束作用。而理论分析和试验研究均表明平板柱脚具有相当可观的转动约束作用。
为了研究平板柱脚对柱的转动约束作用,本文对采用平板柱脚的H型截面柱进行了试验研究。试验得到了柱脚弯矩-转角曲线,研究了底板厚度、锚栓数量以及长细比对转动刚度的影响,并分析了转动刚度对柱计算长度系数的影响;利用ANSYS软件建立平板柱脚有限元模型,对试验试件进行计算,并将计算结果与试验结果进行对比,验证了模型的准确性,在此基础上,系统分析了底板厚度、锚栓数量与直径、柱截面尺寸、长细比、混凝土强度等级以及钢材型号等因素对轴压柱平板柱脚转动刚度的影响。
本文基于试验数据,对轴压柱平板柱脚转动刚度的计算公式提出了建议;推导得出了柱脚转动刚度与柱计算长度系数之间的关系。在对试验试件柱计算长度系数进行计算的基础上分析了底板厚度、柱截面尺寸、长细比以及混凝土弹性模量对计算长度系数的影响。
At present, according to Code for design of steel structures(GB50017-2003),for axially loaded column with plated column base, the column bases are considered as hinged supports, without consideration of the rotational restraint to the column. But it has been proved that the plated column base possess remarkable rotational restraint according to the deduction of theory and experiments.
To study the rotational restraint of plated column base to the column, H-section columns with plated column base were studied through experiment in this paper. The moment-rotation curves of the column base were obtained, the influence factors on the rotational stiffness of plated column base, such as the base plate thickness、the number of anchors、the slenderness ratio were studied and the influence to the effective length factor of rotational stiffness were also studied through the experiment; The paper established the plated column base models with the finite element software of ANSYS, analyzed the test specimen with the models and compared the finite element results with experimental results to verify the models being accurate. On this foundation, analyzed the influence factors on the rotational rigidity of the plated column base, such as base plate thickness, the number and diameter of the anchors, column section size, still grade and Concrete strength grade .
The paper proposed the formulas of the rotational rigidity of the plated column base according to the experimental results, and deduced the relationship between the rotational rigidity of the plated column base and the effective length factor. The influence factors on the effective length factor such as the base plate thickness, the slenderness ratio, column section size and elastic modulus of concrete were studied based on the calculation of effective length factor of the specimen.
为了研究平板柱脚对柱的转动约束作用,本文对采用平板柱脚的H型截面柱进行了试验研究。试验得到了柱脚弯矩-转角曲线,研究了底板厚度、锚栓数量以及长细比对转动刚度的影响,并分析了转动刚度对柱计算长度系数的影响;利用ANSYS软件建立平板柱脚有限元模型,对试验试件进行计算,并将计算结果与试验结果进行对比,验证了模型的准确性,在此基础上,系统分析了底板厚度、锚栓数量与直径、柱截面尺寸、长细比、混凝土强度等级以及钢材型号等因素对轴压柱平板柱脚转动刚度的影响。
本文基于试验数据,对轴压柱平板柱脚转动刚度的计算公式提出了建议;推导得出了柱脚转动刚度与柱计算长度系数之间的关系。在对试验试件柱计算长度系数进行计算的基础上分析了底板厚度、柱截面尺寸、长细比以及混凝土弹性模量对计算长度系数的影响。
At present, according to Code for design of steel structures(GB50017-2003),for axially loaded column with plated column base, the column bases are considered as hinged supports, without consideration of the rotational restraint to the column. But it has been proved that the plated column base possess remarkable rotational restraint according to the deduction of theory and experiments.
To study the rotational restraint of plated column base to the column, H-section columns with plated column base were studied through experiment in this paper. The moment-rotation curves of the column base were obtained, the influence factors on the rotational stiffness of plated column base, such as the base plate thickness、the number of anchors、the slenderness ratio were studied and the influence to the effective length factor of rotational stiffness were also studied through the experiment; The paper established the plated column base models with the finite element software of ANSYS, analyzed the test specimen with the models and compared the finite element results with experimental results to verify the models being accurate. On this foundation, analyzed the influence factors on the rotational rigidity of the plated column base, such as base plate thickness, the number and diameter of the anchors, column section size, still grade and Concrete strength grade .
The paper proposed the formulas of the rotational rigidity of the plated column base according to the experimental results, and deduced the relationship between the rotational rigidity of the plated column base and the effective length factor. The influence factors on the effective length factor such as the base plate thickness, the slenderness ratio, column section size and elastic modulus of concrete were studied based on the calculation of effective length factor of the specimen.
引文
[1] Galambos TV. Influence of partial base fixity on frame stability [J]. J. struct. Div. P,1960,84(ST5):85-108.
[2] Salmon,C.G.,Shenken,L.,Johnston,B.G. Moment-Rotation Characteristics of Column Anchor ages Transactions [J]. ASCE,1960,01(122):132-154.
[3] Beaulieu D. A study of the stabilizing action of a simple column base connection [C]//3rd international coll. on stability of metal structures,1983,Toronto,21-35.
[4] Beaulieu D.,Picard A. Contribution des assemblage avec plaque dassiseala stabilitedes poteaux [J]. Construction Metalligue,1985,2:3-19.
[5] Picard A. Rotational restraint of a simple column base connecting [J]. Civil Engineering,1987,14(1):49-57.
[6] Beaulieu D.,Picard A. Behavior of a simple column base connection [J]. Civil Engineering,1985,12:126-136.
[7] Hon,K.K, Melchers, R.E. Experimental behavior of steel column base [J]. Construction steel Research,1988,9(1):35-50.
[8] Jaspart JP.,Vandegans D. Application of the component method to column bases [J]. Constructional Steel Research,1988,48:89-106.
[9] Thambiratnma,,David P., Parmaasevam P. Base Plates Under Axial loads and Moments[J]. Journal of Structural Engineering,1986,112(5):1166-1167.
[10]秋山宏.铁骨柱脚耐震设计[M].东京:技报堂出版社,1985.
[11] David Thambiratnam. Strain Distribution in Steel Column Base Plats subjected Eccentric loads[C]// ICSEAS91.international Conference on Steel and Aluminum Structures,Singapore,1991, 22-24.
[12] Targowski, R,lambiln,D.,Guerlement,G. Base plate column Connection Under Bending Experimenal and Numerical Study [J]. Construct.Steel Research, 1993,27:37-54.
[13] Archibald N.,Sherbourne, Mohammed R. Bahaarl. 3D Simulation of End-Plate Bolted Connections [J]. Journal of Structural Engineering 1994,120(11):122-136.
[14] Ermopoulos, J. Ch., Stamato Poulos G.N. Analytical Modeling of Column-Base plates Under Cyclic loading [J]. Construct Steel Research,1996,40(3):225-238.
[15] Stamatopoulos, G. N., Ermopoulos.J.Ch. Interaction Curves of Column Base-Plate Connections [J].Construct. Steel Research,1997,4:69-89.
[16] JP. Jaspart, Vandegans. Application of the component method to column bases [J].Construct. Steel Research,1998,48:89-106.
[17] G.Th. Michaltsos, J.Ch. Ermopoulos. Dynamic response of column bases [J]. Engineering Structures,2001,23:58-71.
[18]陈军.钢柱脚的转动约束[D].西安:西安建筑科技大学,1989.
[19]周毅平.柱脚平面外转动约束和翘曲约束对偏压柱弯扭屈曲的影响[D].西安:西安建筑科技大学,1990.
[20]周毅平,陈骥.柱脚约束对钢柱弯扭屈曲承载力的影响[J].西安建筑科技大学学报,1992,24(1):49-55.
[21]于安林,永毓栋,郭在田,戴贤阳.露出型钢柱脚抗剪性能的研究(I)[J].工业建筑,1992,22(3):24-26.
[22]于安林,永毓栋,郭在田,戴贤阳.露出型钢柱脚抗剪性能的研究(II)[J].工业建筑,1992,22(5):29-33.
[23]张安国,吴昌栋.钢结构厂房高位锚栓柱脚抗剪承载力的试验研究[J].工业建筑,1997,27(5):28-31.
[24]童骏,陈以一,伍益莹.柱脚弹性约束对门式刚架侧移和内力的影响[J].结构工程师,2003,2:25-30.
[25]马人乐,柳胜华,姚金满.门式刚架轻型钢结构工业厂房柱脚抗剪试验研究与理论分析[J].建筑结构学报,2004,25(2):15-18.
[26]王浩科.简单柱脚约束对变截面门式刚架平面内稳定承载力影响研究[D].重庆:重庆大学,2004.
[27]孟庆晶.残余应力及柱脚约束对门式刚架平面内稳定承载力影响研究[D].重庆:重庆大学,2005.
[28]王文琪.外露式柱脚节点的性能有限元分析[D].哈尔滨:哈尔滨工业大学,2005.
[29]范晓伟.平板式铰接柱脚约束对变截面门式刚架平面内稳定承载力影响研究[D].苏州:苏州科技学院,2007.
[30]陈绍蕃.平板柱脚的转动刚度和柱的计算长度[J].建筑钢结构进展,2009,11(1):1-8.
[31]朱华.简单露出型刚接柱脚变形的研究[D].西安:西安建筑科技大学,2006.
[32]孟凡涛,赵剑锋,阮兴群,柳晓博.考虑平板柱脚转动的带悬伸段柱计算长度系数[J].2010,43:235-240.
[33] Peuserini P et Colson A. Caracterisation des liaisions structure metallique fondation:application au flambement des poteaux[J].Construction Metalligue,1992,2:43-52.
[34]陈绍蕃.钢结构设计原理[M].第三版.北京:科学出版社,2005.
[35]陈骥.钢结构稳定理论与设计(第四版)[M].北京:科学出版社,2008.
[36]龚曙光,谢桂兰.ANSYS操作命令与参数化编程[M].机械工业出版社,2004.
[37]王新敏.ANSYS工程数值分析[M].北京:人民交通出版社,2007.
[38] GB50017-2003.钢结构设计规范[S].北京:中国计划出版社,2003.
[2] Salmon,C.G.,Shenken,L.,Johnston,B.G. Moment-Rotation Characteristics of Column Anchor ages Transactions [J]. ASCE,1960,01(122):132-154.
[3] Beaulieu D. A study of the stabilizing action of a simple column base connection [C]//3rd international coll. on stability of metal structures,1983,Toronto,21-35.
[4] Beaulieu D.,Picard A. Contribution des assemblage avec plaque dassiseala stabilitedes poteaux [J]. Construction Metalligue,1985,2:3-19.
[5] Picard A. Rotational restraint of a simple column base connecting [J]. Civil Engineering,1987,14(1):49-57.
[6] Beaulieu D.,Picard A. Behavior of a simple column base connection [J]. Civil Engineering,1985,12:126-136.
[7] Hon,K.K, Melchers, R.E. Experimental behavior of steel column base [J]. Construction steel Research,1988,9(1):35-50.
[8] Jaspart JP.,Vandegans D. Application of the component method to column bases [J]. Constructional Steel Research,1988,48:89-106.
[9] Thambiratnma,,David P., Parmaasevam P. Base Plates Under Axial loads and Moments[J]. Journal of Structural Engineering,1986,112(5):1166-1167.
[10]秋山宏.铁骨柱脚耐震设计[M].东京:技报堂出版社,1985.
[11] David Thambiratnam. Strain Distribution in Steel Column Base Plats subjected Eccentric loads[C]// ICSEAS91.international Conference on Steel and Aluminum Structures,Singapore,1991, 22-24.
[12] Targowski, R,lambiln,D.,Guerlement,G. Base plate column Connection Under Bending Experimenal and Numerical Study [J]. Construct.Steel Research, 1993,27:37-54.
[13] Archibald N.,Sherbourne, Mohammed R. Bahaarl. 3D Simulation of End-Plate Bolted Connections [J]. Journal of Structural Engineering 1994,120(11):122-136.
[14] Ermopoulos, J. Ch., Stamato Poulos G.N. Analytical Modeling of Column-Base plates Under Cyclic loading [J]. Construct Steel Research,1996,40(3):225-238.
[15] Stamatopoulos, G. N., Ermopoulos.J.Ch. Interaction Curves of Column Base-Plate Connections [J].Construct. Steel Research,1997,4:69-89.
[16] JP. Jaspart, Vandegans. Application of the component method to column bases [J].Construct. Steel Research,1998,48:89-106.
[17] G.Th. Michaltsos, J.Ch. Ermopoulos. Dynamic response of column bases [J]. Engineering Structures,2001,23:58-71.
[18]陈军.钢柱脚的转动约束[D].西安:西安建筑科技大学,1989.
[19]周毅平.柱脚平面外转动约束和翘曲约束对偏压柱弯扭屈曲的影响[D].西安:西安建筑科技大学,1990.
[20]周毅平,陈骥.柱脚约束对钢柱弯扭屈曲承载力的影响[J].西安建筑科技大学学报,1992,24(1):49-55.
[21]于安林,永毓栋,郭在田,戴贤阳.露出型钢柱脚抗剪性能的研究(I)[J].工业建筑,1992,22(3):24-26.
[22]于安林,永毓栋,郭在田,戴贤阳.露出型钢柱脚抗剪性能的研究(II)[J].工业建筑,1992,22(5):29-33.
[23]张安国,吴昌栋.钢结构厂房高位锚栓柱脚抗剪承载力的试验研究[J].工业建筑,1997,27(5):28-31.
[24]童骏,陈以一,伍益莹.柱脚弹性约束对门式刚架侧移和内力的影响[J].结构工程师,2003,2:25-30.
[25]马人乐,柳胜华,姚金满.门式刚架轻型钢结构工业厂房柱脚抗剪试验研究与理论分析[J].建筑结构学报,2004,25(2):15-18.
[26]王浩科.简单柱脚约束对变截面门式刚架平面内稳定承载力影响研究[D].重庆:重庆大学,2004.
[27]孟庆晶.残余应力及柱脚约束对门式刚架平面内稳定承载力影响研究[D].重庆:重庆大学,2005.
[28]王文琪.外露式柱脚节点的性能有限元分析[D].哈尔滨:哈尔滨工业大学,2005.
[29]范晓伟.平板式铰接柱脚约束对变截面门式刚架平面内稳定承载力影响研究[D].苏州:苏州科技学院,2007.
[30]陈绍蕃.平板柱脚的转动刚度和柱的计算长度[J].建筑钢结构进展,2009,11(1):1-8.
[31]朱华.简单露出型刚接柱脚变形的研究[D].西安:西安建筑科技大学,2006.
[32]孟凡涛,赵剑锋,阮兴群,柳晓博.考虑平板柱脚转动的带悬伸段柱计算长度系数[J].2010,43:235-240.
[33] Peuserini P et Colson A. Caracterisation des liaisions structure metallique fondation:application au flambement des poteaux[J].Construction Metalligue,1992,2:43-52.
[34]陈绍蕃.钢结构设计原理[M].第三版.北京:科学出版社,2005.
[35]陈骥.钢结构稳定理论与设计(第四版)[M].北京:科学出版社,2008.
[36]龚曙光,谢桂兰.ANSYS操作命令与参数化编程[M].机械工业出版社,2004.
[37]王新敏.ANSYS工程数值分析[M].北京:人民交通出版社,2007.
[38] GB50017-2003.钢结构设计规范[S].北京:中国计划出版社,2003.