传统框架及楼板局部设缝框架柱端弯矩增大系数分析
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
柱端弯矩增大系数是实现结构"强柱弱梁"的关键措施之一。分析了传统框架的柱端弯矩增大系数,表明现浇楼板对框架梁端抗弯承载力的贡献不可忽略,抗震规范给出的柱端弯矩增大系数难以实现梁铰屈服机制,柱端出现塑性铰难以避免,由此对框架梁侧楼板局部设缝,以消除楼板对框架梁端抗弯承载力的贡献,从而分析该楼板局部设缝框架的柱端弯矩增大系数,表明现行抗震规范给出的柱端弯矩增大系数对于楼板局部设缝的框架可以实现"强柱弱梁"屈服机制。
The parameter "CMAF"is one of the key measures to ensure the strong-column-weak-beam mechanism in frame structures.In this article,the traditional frame was analyzed to study the CMAF.It shows that the contribution of cast-in-place slab to the bearing capacity of the frame beam ends cannot be ignored.The CMAF parameter specified in the code for seismic design of buildings is difficult to help realize the beam-hinge yielding mechanism and it is easy to form the plastic hinges at the column end.The frame with local gaps in slabs was proposed to eliminate the slab contribution to the beam end moment bearing capacity.Frame structures with local gaps in slabs was analyzed to investigate the CMAF parameter,which indicates that the CMAF specified in the code help the frame with local gaps in slabs achieve the strong-column-weak-beam mechanism.
引文
[1]中华人民共和国住房和城乡建设部.GB 50011—2010.建筑结构抗震设计规范[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-rural Development of the People's Republic of China.GB 50011—2010Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
    [2]中华人民共和国住房和城乡建设部.GB 50011—2010.建筑结构抗震设计规范条文说明[S].北京:中国建筑工业出版社,2010.Ministry of Housing and Urban-rural Development of the People's Republic of China.GB 50011—2010Code for seismic design of buildings[S].Beijing:China Architecture and Building Press,2010.(in Chinese)
    [3]叶列平,曲哲,马千里,等.从汶川地震框架结构震害谈“强柱弱梁”屈服机制的实现[J].建筑结构,2008,38(11):52-59,67.Ye Lieping,Qu Zhema,Ma Qianlilin,et al.Study on ensuring the strong column-weak beam mechanism for RC frames based on the damage analysis in he Wenchuan earthquake[J].Building Structure,2008,38(11):52-59,67.(in Chinese)
    [4]杨迎春,吴照学.RC框架结构“强柱弱梁”研究探讨[J].合肥学院学报,2011,21(11):10-12.Yang Yingchun,Wu Zhaoxue.Study on the“strong column weak beam”failure pattern of RC frame[J].Journal of Hefei University,2011,21(11):10-12.(in Chinese)
    [5]郭子雄,黄群贤,魏荣丰,等.带楼板填充墙RC框架抗震性能试验研究[J].建筑结构学报,2009,(S2):127-132.Guo Zixiong,Huang Qunxian,Wei Rongfeng,et al.Experimental study on seismic behavior of RC frames with slab and infilled masonry walls[J].Journal of Building Structures,2009,(S2):127-132.(in Chinese)
    [6]阎红霞,杨庆山,李吉涛.现浇楼板对钢筋混凝土框架结构在地震作用下破坏形式的影响[J].振动与冲击,2011,30(7):227-232.Yan Hongxia,Yang Qingshan,Li Jitao.Influence of cast-in-place floor slab on damage style of frame structures under earthquake[J].Journal of Vibration and Shock,2011,30(7):227-232.(in Chinese)
    [7]王素裹,韩小雷,季静.现浇楼板对RC框架结构破坏形式的影响分析[J].土木建筑与环境工程,2009,31(1):66-71.Wang Suguo,Han Xiaolei,Ji Jing.The effect of Slabs on the failure mode of reinforced concrete frame structures[J].Journal of Civil,Architectural and Environmental Engineering,2009,31(1):66-71.(in Chinese)
    [8]汪小林,顾祥林,印小晶,等.现浇楼板对钢筋混凝土框架结构倒塌模式的影响[J].建筑结构学报,2013,34(4):23-31,42.Wang Xiaolin,Gu Xianglin,Yin Xiaojing,et al.Effect of cast-in-situ floor slab on collapse modes of RC frame structures under earthquake[J].Journal of Building Structures,2013,34(4):23-31,42.(in Chinese)
    [9]左琼,白雪霜,王亚勇.楼板参与作用对RC框架结构抗倒塌能力影响[J].建筑结构,2013,43(1):37-40.Zuo Qiong,Bai Xueshuang,Wang Yayong.Effects of floor slab on the collapse-resistance capacity of RC frame structures[J].Building Structure,2013,43(1):37-40.(in Chinese)
    [10]蔡健,周靖,方小丹.柱端弯矩增大系数取值对RC框架结构抗震性能影响的评估[J].土木工程学报,2007,40(1):6-14.Cai Jian,Zhou Jing,Fang Xiaodan.Evaluation of influences of various moment magnifying coefficients at column ends of RC frames on seismic performance[J].China Civil Engineering Journal,2007,40(1):6-14.(in Chinese)
    [11]管民生,杜宏彪,韩大建.RC矩形柱框架结构不同柱-梁抗弯强度比的Pushover分析[J].建筑结构,2009,39(4):14-16,42.Guan Minsheng,Du Hongbiao,Han Dajian.Pushover analysis on rectangular column frames with different column-to-beam strength ratios[J].Building Structure,2009,39(4):14-16,42.(in Chinese)
    [12]蒋永生,陈忠范,周绪平,等.整浇梁板的框架节点抗震研究[J].建筑结构学报,1994,25(6):11-16.Jiang Yongsheng,Chen Zhongfan,Zhou Xuping,et al.Aseismic research on RC frame joint of monolithically casted slab[J].Journal of Building Structures,1994,25(6):11-16.(in Chinese)
    [13]French C W,Moehle J P.Effect of floor slab on behavior of slab-beam-column connections[J].Design of beam-column joints for seismic resistance,SP-123,American Concrete Institute,Farmington Hills,Mich.,1991:225-258.
    [14]王素裹,祁皑,范冰辉.考虑现浇楼板影响的有效翼缘宽度取值探讨[J].福州大学学报(自然科学版),2012,40(2):226-231.Wang Suguo,Qi Ai,Fan Binghui.Discussion of the effective flange width considering the influence of monolithic slab[J].Journal of Fuzhou University(Natural Science Edition),2012,40(2):226-231.(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