地震作用下环带对带伸臂的框一筒结构力学性能的影响
|
摘要
对—60层的框架核心筒结构通过改变水平伸臂、环带构件的设置情况而形成不同的结构方案,采用三维有限元分析软件ETABS进行地震作用下的动力分析,。探讨地震作用下水平伸臂以及不同刚度环带对结构顶点侧移、核心筒剪力、外框柱轴力的影响。分析表明:环带的设置、环带本身的刚度对地震作用下高层框架-核心筒结构的顶点侧移影响不大;但环带能有效调整外框柱的轴力分布,更好的发挥外框柱的整体作用;环带的设置会加大水平加强层的剪力突变这一现象。
The thesis conducts a space dynamic analysis on a 60 - storey framed - tube structure that has different belt and outrigger plans under horizontal seismic by ETABS. The influnces of peak sidesway , shears of core wall and axial forces of outside frame columns effectd by the belt were studied. The analysis indicates that under horizontal seismic, the institution and rigidity of belt has few influnce on peak sidesway of high-rise frame-core wall structure, but effectively adjusts distribution of axial forces of outside frame columns, and further displays integrated performances of outside columns. The analysis also indicates that disadvantageous effects of shearing mutation are increased on the strengthened storey with belt.
The thesis conducts a space dynamic analysis on a 60 - storey framed - tube structure that has different belt and outrigger plans under horizontal seismic by ETABS. The influnces of peak sidesway , shears of core wall and axial forces of outside frame columns effectd by the belt were studied. The analysis indicates that under horizontal seismic, the institution and rigidity of belt has few influnce on peak sidesway of high-rise frame-core wall structure, but effectively adjusts distribution of axial forces of outside frame columns, and further displays integrated performances of outside columns. The analysis also indicates that disadvantageous effects of shearing mutation are increased on the strengthened storey with belt.
引文
[1] 阮永辉,吕西林.带水平加强层的高层结构的力学性能分析.结构工程师,2000,(4) :12-16
[2] 陈林之,李政章.水平加强层对筒中筒结构空间受力性能的影响.工业建筑,2005 , 35 (10) :23-25
[3] 余安东.用水平加强层控制高层结构的侧移--水平加强层的作用及其最佳位置.建筑结构学报,1988,(6) :61-67
[4] 刘建新.水平加强层减小高层建筑结构侧移的机理分析.烟台大学学报(自然科学与工程版),1997,10(2)
[5] 建筑抗震设计规范(GB 50011-2001 ).北京:中国建筑工业出版社,2001
[6] 高层建筑混凝土结构技术规程(JGJ3-2002J168-2002) .北京:中国建筑工业出版社,2002
[7] 张仲先,赵娜,徐荣,等.环带对带水平伸臂的高层结构力学性能的影响.华中科技大学学报(城市科学版),2007,24(1) :5-7
[2] 陈林之,李政章.水平加强层对筒中筒结构空间受力性能的影响.工业建筑,2005 , 35 (10) :23-25
[3] 余安东.用水平加强层控制高层结构的侧移--水平加强层的作用及其最佳位置.建筑结构学报,1988,(6) :61-67
[4] 刘建新.水平加强层减小高层建筑结构侧移的机理分析.烟台大学学报(自然科学与工程版),1997,10(2)
[5] 建筑抗震设计规范(GB 50011-2001 ).北京:中国建筑工业出版社,2001
[6] 高层建筑混凝土结构技术规程(JGJ3-2002J168-2002) .北京:中国建筑工业出版社,2002
[7] 张仲先,赵娜,徐荣,等.环带对带水平伸臂的高层结构力学性能的影响.华中科技大学学报(城市科学版),2007,24(1) :5-7
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