钢管混凝土叠合柱节点环梁试验研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
钢管混凝土叠合柱环梁节点是一种连接叠合柱和钢筋混凝土梁的新型节点。针对7个钢管混凝土叠合柱边节点环梁进行了试验研究,其中对2个试件采用单调静力加载试验,对2个变径宽比(环梁半径与环梁宽度的比值)试件和3个变配筋比(同侧环梁环筋面积与框架梁纵筋面积的比值)试件采用低周反复加载试验,研究节点的破坏模式、承载力、节点区钢筋应力分布和耗能情况。结果表明:钢管混凝土叠合柱环梁节点在概念上安全可行,合理的设计可以实现"强节点、弱构件";配筋比越大,节点越易发生框架梁破坏;在一定范围内,节点承载力随着径宽比的减小、配筋比的增大而提高;环梁锚固区附近钢筋应力较大,环梁内外纵筋应力分布不均匀,环梁内纵筋一般不屈服;节点的等效黏滞阻尼系数较大,表明节点的耗能能力较好。
Innovative types of joints are recently used to connect concrete filled steel tubular laminated( CFTL)columns and reinforced concrete beams. Aimed at exterior joints of ring beams and concrete filled steel tubular laminated( CFTL) columns,two monotonic loading tests and two cyclic loading tests for specimens with various radiusto-width ratios and three cyclic loading tests for specimens with various reinforcement ratios were carried out,to study the failure modes,capacity,stress distribution of bars and energy dissipation of the joints. The results show that: the joint of ring beam and CFTL column is feasible and appropriate design can guarantee the structural design philosophy of‘strong-column-weak-beam'. For the failure modes of the joints,frame beam failure mode is prone to occur as reinforcement ratio gets larger. The capacity of the joint increases within limits as the radius-to-width ratio gets smaller or the reinforcement ratio becomes larger. The stresses of the longitudinal bars of the anchorage zone of the ring beam are high,and the stresses of inner and outside longitudinal bars are not uniform since the inner longitudinal bars barely yield. For the capacity of energy dissipation,the equivalent viscous damping coefficients show that the energy dissipation capacity is high.
引文
[1]李惠,吴波,林立岩.钢管高强混凝土叠合柱的抗震性能研究[J].地震工程与工程振动,1998,18(1):45-53.(LI Hui,WU Bo,LIN Liyan.Study on seismic properties of laminated column with high strength concrete containing steel tube[J].Earthquake Engineering and Engineering Vibration,1998,18(1):45-53.(in Chinese))
    [2]黄用军,宋宝东,尧国皇,等.深圳卓越·皇岗世纪中心项目二号塔楼结构设计与研究[J].建筑钢结构进展,2009,11(2):48-55.(HUANG Yongjun,SONG Baodong,YAO Guohuang,et al.Design and research of the second tower of Zhuoyue Huanggang century centre project in Shenzhen[J].Progress in Steel Building Structures,2009,11(2):48-55.(in Chinese))
    [3]许谦,毛仁兴,黄卓,等.深圳东海商务中心一期超限高层结构设计[J].建筑结构,2008,38(8):19-22.(XU Qian,MAO Renxing,HUANG Zhuo,et al.Structural design of super high building of Shenzhen Donghai center[J].Building Structure,2008,38(8):19-22.(in Chinese))
    [4]郭明,尧国皇,陈宜言.钢管混凝土(叠合)柱在超高层建筑结构中的应用[J].广东土木与建筑,2010(11):10-12.(GUO Ming,YAO Guohuang,CHEN Yiyan.Application of concrete filled steel tubular column in highrise building structures[J].Guangdong Architecture Civil Engineering,2010(11):10-12.(in Chinese))
    [5]CECS 188:2005钢管混凝土叠合柱结构技术规程[S].北京:中国计划出版社,2008.(CECS 188:2005 Technical specification for steel tube-reinforced concrete column structure[S].Beijing:China Planning Press,2008.(in Chinese))
    [6]钱稼茹,周栋梁,方小丹.钢管混凝土柱-RC环梁节点及其应用[J].建筑结构,2003,33(9):60-72.(QIAN Jiaru,ZHOU Dongliang,FANG Xiaodan.Steel tube confined concrete column-RC ring beam joint and the application[J].Building Structure,2003,33(9):60-72.(in Chinese))
    [7]方小丹,李少云,钱稼茹,等.钢管混凝土柱-环梁节点抗震性能的试验研究[J].建筑结构学报,2002,23(6):10-18.(FANG Xiaodan,LI Shaoyun,QIAN Jiaru,et al.Experimental research on seismic behavior of concrete filled steel tubular column-ring beam joint under cyclic loading[J].Journal of Building Structures,2002,23(6):10-18.(in Chinese))
    [8]周栋梁,钱稼茹,方小丹,等.钢管混凝土柱-RC环梁节点框架试验研究[J].土木工程学报,2004,37(5):7-15.(ZHOU Dongliang,QIAN Jiaru,FANG Xiaodan,et al.Experimental study on a RC beamSTCC column frame with RC ring beam connectors[J].China Civil Engineering Journal,2004,37(5):7-15.(in Chinese))
    [9]方小丹,黄圣钧,李少云,等.RC梁-圆钢管混凝土柱节点环梁承载力设计方法[J].建筑结构学报,2008,29(5):20-33.(FANG Xiaodan,HUANG Shengjun,LI Shaoyun,et al.Design method of RC beam-STCC column joint connected with ring beam[J].Journal of Building Structures,2008,29(5):20-33.(in Chinese))
    [10]姚振纲,刘祖华.建筑结构试验[M].上海:同济大学出版社,1996:135-149.
    [11]郑山锁,李磊.型钢高强高性能混凝土结构基本性能与设计[M].北京:科学出版社,2012:210-212.(ZHENG Shansuo,LI Lei.Basic performance and design of steel reinforced high-strength highperformance concrete structures[M].Beijing:Science Press,2012:210-212.(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