合肥新桥机场航站楼大型箱形钢柱的拟静力试验
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摘要
通过8根箱形钢柱在偏心常轴压、柱顶反复水平荷载作用下的拟静力试验,研究地震作用下合肥新桥机场航站楼大型箱形钢柱的壁板稳定性及其抗震性能。试验结果表明:在小震作用下,合肥新桥机场航站楼箱形钢柱处于弹性受力状态,且壁板稳定;在大震作用下,箱形钢柱壁板基本处于弹塑性受力状态,出现塑性变形,但壁板仍然满足稳定性要求。腹板宽厚比是影响构件抗震性能的重要因素,腹板宽厚比越大,滞回曲线越不饱满,试件的承载力及刚度退化越严重。最后,提出大跨度空间结构箱形钢构件的加工制作构造措施及抗震设计建议。
Pseudo-static experiments on the seismic behavior of 8 eccentrically constant-compressed steel box columns under cyclic lateral loading are conducted.The local stability and the seismic behavior of steel box columns in Hefei Xinqiao Airport Terminal under the action of an earthquake are investigated.Experimental results show that the steel box columns in Hefei Xinqiao Airport Terminal under the action of a frequent earthquake are in an elastic state,and the plate is steady.While the columns under the action of a rare earthquake are in an elastoplastic state,and the plastic deformation is found.The local stability of columns under the action of the rare earthquake is satisfied code demands.It is also found that the width-to-thickness ratio of a web plate has an obvious effect on the seismic behavior of the steel box columns.When the width-to-thickness ratio of the web plate increases,the area of the hysteresis loops tends to descend,and the load-bearing capacity and stiffness of the steel column degenerate severely.Finally,details of fabrication and suggestions of the aseismic design for steel box columns in large span structures are proposed.
Pseudo-static experiments on the seismic behavior of 8 eccentrically constant-compressed steel box columns under cyclic lateral loading are conducted.The local stability and the seismic behavior of steel box columns in Hefei Xinqiao Airport Terminal under the action of an earthquake are investigated.Experimental results show that the steel box columns in Hefei Xinqiao Airport Terminal under the action of a frequent earthquake are in an elastic state,and the plate is steady.While the columns under the action of a rare earthquake are in an elastoplastic state,and the plastic deformation is found.The local stability of columns under the action of the rare earthquake is satisfied code demands.It is also found that the width-to-thickness ratio of a web plate has an obvious effect on the seismic behavior of the steel box columns.When the width-to-thickness ratio of the web plate increases,the area of the hysteresis loops tends to descend,and the load-bearing capacity and stiffness of the steel column degenerate severely.Finally,details of fabrication and suggestions of the aseismic design for steel box columns in large span structures are proposed.
引文
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[3]钱稼茹,赵作周,彭明英,等.国家体育场扭曲箱形构件抗弯试验[J].建筑结构学报,2007,28(2):112―119.Qian Jiaru,Zhao Zuozhou,Peng Mingying,et al.Experiments on flexural behavior of steel twistedbox-section members of the national stadium[J].Journalof Building Structures,2007,28(2):112―119.(inChinese)
[4]Li Haifeng,Luo Yongfeng.Application of stiffness matrixof a beam element considering section distortion effect[J].Journal of Southeast University(English Edition),2010,26(3):431―435.
[5]Ge H B,Susantha K A S,Satake Y,Usami T.Seismicdemand predictions of concrete-filled steel box columns[J].Engineering Structures,2003,25:337―345.
[6]Usami T,Zheng Y,Ge H B.Recent researchdevelopments in stability and ductility of steel bridgestructures general report[J].Journal of ConstructionalSteel Research,2000,55:183―209.
[7]郭佳民,董石麟,袁行飞.弦支穹顶结构的模型设计与试验研究[J].工程力学,2011,28(7):157―164.Guo Jiamin,Dong Shilin,Yuan Xingfei.Model designingand experimental research of suspen-dome structure[J].Engineering Mechanics,2011,28(7):157―164.(inChinese)
[8]卢彭真,张俊平,赵人达.典型人字形桥梁模型试验研究与分析[J].工程力学,2008,25(3):139―143.Lu Pengzhen,Zhang Junping,Zhao Renda.Analysis andstudy on model experiment of typical Y-shape bridge[J].Engineering Mechanics,2008,25(3):139―143.(inChinese)
[9]李海锋.大跨度空间结构箱形钢构件抗震性能研究[D].上海:同济大学,2011.Li Haifeng.Study on seismic behavior of steel boxbeam-columns in large span spatial structures[D].Shanghai:Tongji University,2011.(in Chinese)
[10]黄健华,潘庆春.矩形梁极限承载时塑性铰的云纹法试验研究[J].合肥工业大学学报(自然科学版),2002,25(4):559―601.Huang Jianhua,Pan Qingchun.Moiréexperimentalinvestigation of the plastic hinge while the rectangularbeams enduring the ultimate load[J].Journal of HefeiUniversity of Technology,2002,25(4):559―601.(inChinese)
[11]Liu Jiepeng,Zhou Xuhong,Zhang Sumei.Seismicbehaviour of square CFT beam-columns under biaxialbending moment[J].Journal of Constructional SteelResearch,2008,64:1473―1482.
[12]Zhang Yaochun,Xu Chao,Lu Xiaozhe.Experimentalstudy of hysteretic behaviour for concrete-filled squarethin-walled steel tubular columns[J].Journal ofConstructional Steel Research,2007,63:317―325.
[13]Su Minzhou,Gu Qiang,Shen Lin.The cyclic behaviorsof box-section steel beam-columns experiment&numerical comparison[J].Advanced Steel Construction,2006,2(2):161―171.
[14]童乐为,顾敏,陈以一,等.具有内加劲肋的空间多支管的圆管节点性能研究[J].建筑结构,2009,39(1):69―72.Tong Lewei,Gu Min,Chen Yiyi,et al.Behavior ofmultiplanar circular hollow section joints with internalstiffeners[J].Building Structure,2009,39(1):69―72.(inChinese)
[15]夏志皋.塑性力学[M].上海:同济大学出版社,1999:28―37.Xia Zhigao.Plastic machanics[M].Shanghai:TongjiUniversity Press,1999:28―37.(in Chinese)