H型钢梁与方钢管柱连接框架抗侧移刚度有限元分析
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摘要
目的分析钢框架高跨比、框架梁的高度、框架梁截面宽度、框架柱截面宽厚比等对框架抗侧移刚度的影响.方法采用正交试验设计方法设计16个正交试验模型,利用有限元分析软件ANSYS对16个正交试验模型进行有限元分析,对钢框架中的方钢管柱用相同用钢量的H型钢柱代替模拟.结果框架的抗侧移刚度主要取决因素依次是框架柱截面宽厚比、框架梁截面高度、框架梁跨度、框架梁截面宽度.结论设计钢框架时抗侧移刚度主要考虑因素是框架柱截面形式、截面宽厚比,其次是框架梁截面高度、框架梁跨度,而框架梁截面宽度影响很小可以不予考虑.
Using an orthogonal experimental design method,influencing factors of lateral stiffness of frameworks,such as height-to-span ratio of steel frames,height of frame beams,width of frame beams,and cross-section width-to-thickness ratio of frame columns,were considered for an orthogonal design,and 16 orthogonal test models were presented as well.These orthogonal models were analyzed by using a finite element software ANSYS to simulate these influencing factors of lateral stiffness.The results show that the order of these factors by influencing effects on anti-sway stiffness of frames is the cross-section width-thickness ratio of frame column,the cross-section height of frame beam,the span of frame beam,and the width of frame beams.Therefore,the cross-section width-thickness ratio should be considered as the first influencing factor for the stiffness design of anti-sway steel frames,and the cross-section height and span are considered as the second and the third factors,respectively,while the width of frame beams can be neglected due to its little effect on stiffness of frame beams.
Using an orthogonal experimental design method,influencing factors of lateral stiffness of frameworks,such as height-to-span ratio of steel frames,height of frame beams,width of frame beams,and cross-section width-to-thickness ratio of frame columns,were considered for an orthogonal design,and 16 orthogonal test models were presented as well.These orthogonal models were analyzed by using a finite element software ANSYS to simulate these influencing factors of lateral stiffness.The results show that the order of these factors by influencing effects on anti-sway stiffness of frames is the cross-section width-thickness ratio of frame column,the cross-section height of frame beam,the span of frame beam,and the width of frame beams.Therefore,the cross-section width-thickness ratio should be considered as the first influencing factor for the stiffness design of anti-sway steel frames,and the cross-section height and span are considered as the second and the third factors,respectively,while the width of frame beams can be neglected due to its little effect on stiffness of frame beams.
引文
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[3]Zhu Jihua,Young B.Experimental investigation of alu-minum alloy circular hollow section columns[J].Engi-neering Structure,2006,28(2):207-215.
[4]Cristopher D M,Schafer B W.Experiments on cold-formed steel columns with holes[J].Thin-WalledStructures,2008,46(10):1164-1182.
[5]Veljkovic M,Johansson B.Thin-walled steel columnswith partially closed cross-section:tests and computersimulations[J].Journal of Constructional Steel Re-search,2008(7):816-821.
[6]Zhang Yaochun,Wang Chungang,Zhang Zhuangnan.Tests and finite element analysis of pin-ended channelcolumns with inclined simple edge stiffeners[J].Jour-nal of Constructional Steel Research,2007,63(3):383-395.
[7]张梁,陈以一.方钢管柱与H型钢梁连接形式评述[J].结构工程师,2009,25(4):130-137.(Zhang Liang,Chen Yiyi.Review connection forms ofsquare steel columns and H steel beams[J].StructuralEngineer,2009,25(4):130-137.)
[8]Nie Jianguo,Qin Kai,Cai C S.Seismic behavior of con-nections composed of CFSSTCs and steel concrete com-posite beams finite element analysis[J].Journal ofConstructional Steel Research,2008,64:680-688.
[9]Zhang Yaochun,Xu Chao,Lu Xiaozhe.Experimentalstudy of hysteretic behaviour for concrete-filled squarethin-walled steel tubular columns[J].Journal of Con-structional Steel Research,2007,63:317-325.
[10]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.(Wang Xinmin.ANSYS numerical analysis of engi-neering structure[M].Beijing:China CommunicationsPress,2007.)
[11]郝文化.ANSYS土木工程应用实例[M].北京:中国水利水电出版社,2005.(Hao Wenhua.ANSYS civil engineering applications[M].Beijing:China Water Power Press,2005.)
[12]朱燕堂,赵选民,徐伟.应用概率统计分析[M].西安:西北工业大学出版社,2004.(Zhu Yantang,Zhao Xuanmin,Xu Wei.Applied prob-ability and statistical analysis[M].Xi'an:Northwest-ern Polytechnical University Press,2004.)
[13]赵成文,颜双月,范晋,等.有侧移框架二阶效应的弹性分析[J].沈阳建筑大学学报:自然科学版,2007,23(1):61-64.(Zhao Chengwen,Yan Shuangyue,Fan Jin,et al.Frame with side sway second-orders effects flexibilityanalysis[J].Journal of Shenyang Jianzhu University:Natural Science,2007,23(1):61-64.)
[14]王义朝.关于门式刚架结构位移和稳定性的分析[J].工程建设与设计,2006,1:14-15.(Wang Yichao.Portal steel frame structure displace-ment and stability analysis[J].Construction&Designfor Project,2006,1:14-15.)
[15]徐凌,徐亮,高松.外伸端板螺栓连接节点的强度和刚度研究[J].地震工程与工程振动,2006,26(2):88-91.(Xu Ling,Xu Liang,Gao Song.The research ofstrength and stiffness of research extended end-platebolt connected nodes[J].Earthquake Engineering andEngineering Vibration,2006,26(2):88-91.)
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