冷弯型钢组合截面T形节点抗震性能研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
冷弯型钢在低层住宅结构中应用广泛,国内已有相应规范出版,但对冷弯型钢组合截面缺少相关设计规定。该文选择双肢冷弯C型钢背靠背带垫板的截面形式,对其抗弯节点进行抗震性能研究,采用试验与有限元分析相结合的方法,研究了节点板厚度、螺栓间距、C型钢厚度和腹板高度等参数对节点抗震性能的影响,发现该类节点的破坏特征符合抗震设计要求,滞回曲线饱满,承载力退化稳定、初始刚度大、刚度退化较为严重、耗能性能和延性较好。在相关参数中节点板厚度和螺栓间距对节点抗震性能的影响最大。C型钢厚度和腹板高度增加能明显提高节点的极限承载力。螺栓间距的增加会使节点承载力略有提高,但节点的耗能性能变差。
The cold-formed steel is widely used in low story residential structures, and corresponding specifications had been published; however, the codes for the design of compound sections are lacking currently. This paper presents the testing of bending joints whose sections are composed of cold-formed back-to-back double C steel with gusset plates, and finite element analysis are performed to investigate the seismic behavior of bending joints. The influences of gusset plate thickness, bolt pitch, C steel thickness and web height are considered. The failure patterns of these joints conform to anti-seismic design requirements. The hysteretic curves demonstrate high initial stiffness, significant stiffness degradation, good energy dissipation capability and good ductility. Gusset plate thickness and bolt spacing have great impact on seismic behavior. Increasing C steel thickness and web height can significantly improve the ultimate bearing capacity. Increasing bolt spacing can slightly improve the bearing capacity while the energy dissipation capacity is weakened.
引文
[1]南晶晶,凌利改,田国平.冷弯型钢在国内外的发展及其在建筑结构中的应用[J].水利与建筑工程学报,2009,7(2):117―119.Nan Jingjing,Ling Ligai,Tian Guoping.The development of cold bending steel at home and abroad and its application in the building structure[J].Journal of Water Conservancy and Architectural Engineering,2009,7(2):117―119.(in Chinese)
    [2]卢林枫,顾强.积极发展西部建筑市场中的轻型钢结构建筑[J].四川建筑科学研究,2003,29(2):18―20.Lu Linfeng,Gu Qiang.Actively developing light steel structure of West building construction market[J].Sichuan Building Science,2003,29(2):18―20.(in Chinese)
    [3]钟国辉.冷弯型钢结构在房屋建筑中的应用[J].建筑钢结构进展,2002,4(4):3l―38.Chung K F.Researching development on building construction using cold-formed steel sections[J].Progress in Steel Building Structures,2002,4(4):31―38.(in Chinese)
    [4]彭雄,杨娜,孟庆桐.冷弯薄壁型钢组合截面构件试验研究与数值模拟[J].工程力学,2012,29(9):272―293.Peng Xiong,Yang Na,Meng Qingtong.Experimental research and numerical analysis on the combination effects of cold-formed steel specimens[J].Engineering Mechanics,2012,29(9):272―293.(in Chinese)
    [5]石文龙,李国强,肖勇,叶志明.半刚性连接梁柱组合节点低周反复荷载试验研究[J].建筑结构学报,2008,29(5):57―66.Shi Wenlong,Li Guoqiang,Xiao Yong,Ye Zhiming.Cyclic loading tests on composite beam-to-column joints with semi-rigid connections[J].Journal of Building Structures,2008,29(5):57―66.(in Chinese)
    [6]吴函恒.周天华,石宇,等.地震作用下冷弯薄壁型钢结构房屋弹塑性位移简化计算研究[J].工程力学,2013,30(7):180―186.Wu Hanheng,Zhou Tianhua,Shi Yu,et al.Simplified calculation of elastoplastic displacement for cold-formed thin-walled steel buildings under earthquakes[J].Engineering Mechanics,2013,30(7):180―186.(in Chinese)
    [7]张爱林,于劲,李健,刘会军.低周反复荷载作用下T形截面钢异形柱-钢梁节点抗震性能试验研究[J].建筑结构学报,2011,32(7):118―126.Zhang Ailin,Yu Jin,Li Jian,Liu Huijun.Experimental research on seimic behavior of steel especially shaped column with T-shaped section to steel beam connections under cyclic loading[J].Journal of Building Structures,2011,32(7):118―126.(in Chinese)
    [8]王春刚,张壮南,张耀春.冷弯薄壁斜卷边槽钢轴压构件承载力计算的直接强度法研究[J].工程力学,2012,29(3):75―82.Wang Chungang,Zhang Zhuangnan,Zhang Yaochun.Direct strength method study on bearing capacity calculation of channel columns with inclined simple edge stiffeners under axial compression[J].Engineering Mechanics,2012,29(3):75―82.(in Chinese)
    [9]Dundu M,kemp A R.Strength requirement of single cold-formed channels connected back-to-back[J].Journal of Construction Steel Research,2006,62(3):250―261.
    [10]Lim J B P,Nethercot D A.Ultimate strength of bolted moment-connections between cold-formed steel member[J].Thin-Walled Structures,2003,41(11):1019―1039.
    [11]Lim J B P,Nethercot D A.Stiffness prediction for bolted ment-connections between cold-formed steel member[J].Journal of Construction Steel Research,2004,60(1):85―107.
    [12]GB/T 2975-1998,钢及钢产品力学性能试验取样位置及试样制备[S].北京:中国标准出版社,1998.GB/T 2975-1998,Steel and steel products-Location and preparation of test pieces for mechanical testing[S].Beijing:China Standard Press,1998.(in Chinese)
    [13]JGJ 101-96,建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1996JGJ 101-96,Specification of testing methods for earthquake resistant building[S].Beijing:China Architecture Building Press,1996.(in Chinese)
    [14]高春彦.矩形钢管混凝土梁柱节点抗震性能的试验研究[D].包头:内蒙古科技大学,2007.Gao Chunyan.Experimental study of seismic performance of rectangular concrete-filled steel tube beam-column joints[D].Baotou:Inner Mongolia University of Science and Technology,2007.(in Chinese)
    [15]王军.冷弯薄壁型钢框架半刚性节点动力性能试验研究及有限元分析[D].重庆:重庆大学,2005.Wang Jun.Dynamic performance testing study and finite element analysis of semi-rigid nodes of cold-formed thin-walled steel framework[D].Chongqing:Chongqing University,2005.(in Chinese)
    [16]马萧.ANSYS的网格划分技巧[J].矿山机械,2004,26(5):16―24.Ma Xiao.ANSYS meshing technique[J].Mining Machinery,2004,26(5):16―24.(in Chinese)
    [17]石永久,王萌,王元清.钢框架不同构造形式焊接节点抗震性能分析[J].工程力学,2012,29(7):75―83.Shi Yongjiu,Wang Meng,Wang Yuanqing.Seismic performance of steel frame different form welding joints[J].Engineering Mechanics,2012,29(7):75―83.(in Chinese)

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心