RESEARCH ON DYNAMIC PERFORMANCE OF CORE-RC AND COMPOSITE FRAME STRUCTURES IN HIGH-RISE BUILDINGS
-
摘要: 为研究高层组合框架-混凝土筒体混合结构的动力性能,以某30层混合结构为分析对象,建立整体空间有限元模型,进行模态与弹性时程分析。分析结果表明:外框架与筒体之间连接方式对混合结构的周期与振型影响较明显。地震作用下的层间位移角极值发生在混合结构的中上部楼层,沿结构高度楼层加速度的分布有两个极值区,框架所负担的层间剪力比例较小,但外框架承担的层间弯矩较大;改变连接方式使结构变形与内力分布发生显著变化。
-
关键词:
- 组合框架-混凝土筒体混合结构 /
- 模态分析 /
- 弹性时程分析 /
- 连接方式
Abstract: For the dynamic performance of core-RC and composite frame structures, The space finite element models of a 30-storey hybrid structure are established,modal analysis and elastic time-history analysis are conducted.The results indicate that the connection between frame and core has obvious effect on mode shape and natural vibration periods.The inter-story displacement maximal angle occurs on the middle stories of the composite structure.There are two extremal regions of story acceleration along the height direction of the structure under earthquake. The ratios of the story shears of exterior frame are less,whereas the ratios of the story overturning moment of exterior frame are larger.the connection will lead to significant change in the deformation and distribution of internal force. -
GB 50011-2001建筑抗震设计规范[S]. [2] 方鄂华,钱稼茹.我国高层建筑抗震设计的若干问题[J].土木工程学报,1999,32(2):3-7. [3] 徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005:92-414. [4] Zhang Shuyun,Bai guoliang,Jiang Weisan.Research and Practice ofExterior Frame and Core-RC Hybrid Structures in High-Rise Buildingin China[C]//8th International Conference on Steel-concrete Compositeand Hybrid Structures Proceedings.Harbin:Harbin Institute TechnologyPublishers,2006:507-511. [5] 徐培福,薛彦涛,肖从真,等.高层型钢混凝土框筒混合结构抗震性能试验研究[J].建筑结构,2005,35(5):3-8. [6] 小飒工作室.最新经典ANSYS及WORKBENCH教程[M].北京:电子工业出版社,2004:253-442. [7] JGJ 3-2002高层建筑混凝土结构技术规程[S]. [8] JGJ 138-2001型钢混凝土组合结构技术规程[S]. [9] 沈聚敏,周锡元,高小旺,等.抗震工程学[M].北京:中国建筑工业出版社,2000:452-482.
点击查看大图
计量
- 文章访问数: 57
- HTML全文浏览量: 4
- PDF下载量: 58
- 被引次数: 0