期刊文献+

Progressive Collapse Analysis of Concrete-Filled Steel Tubular Frames with Semi-rigid Connections

Progressive Collapse Analysis of Concrete-Filled Steel Tubular Frames with Semi-rigid Connections
下载PDF
导出
摘要 A 9-story concrete-filled steel tubular frame model is used to analyze the response of joints due to sudden column loss. Three different models are developed and compared to study the efficiency and feasibility of simulation, which include substructure model, beam element model and solid element model. The comparison results show that the substructure model has a satisfying capability, calculation efficiency and accuracy to predict the concerned joints as well as the overall framework. Based on the substructure model and a kind of semi-rigid connection for concretefilled square hollow section steel column proposed in this paper, the nonlinear dynamic analyses are conducted by the alternate path method. It is found that the removal of the ground inner column brings high-level joint moments and comparatively low-level axial tension forces. The initial stiffness and transmitted ultimate moment of the semi-rigid connection are the main factors that influence the frame behavior, and their lower limit should be guaranteed to resist collapse. Reduced ultimate moment results in drastic displacement and axial force development, which may bring progressive collapse. The higher initial stiffness ensures that the structure has a stronger capacity to resist progressive collapse. A 9-story concrete-filled steel tubular frame model is used to analyze the response of joints due to sudden column loss. Three different models are developed and compared to study the efficiency and feasibility of simulation, which include substructure model, beam element model and solid element model. The comparison results show that the substructure model has a satisfying capability, calculation efficiency and accuracy to predict the concerned joints as well as the overall framework. Based on the substructure model and a kind of semi-rigid connection for concrete- filled square hollow section steel column proposed in this paper, the nonlinear dynamic analyses are conducted by the alternate path method. It is found that the removal of the ground inner column brings high-level joint moments and comparatively low-level axial tension forces. The initial stiffness and transmitted ultimate moment of the semi-rigid connection are the main factors that influence the frame behavior, and their lower limit should be guaranteed to resist collapse. Reduced ultimate moment results in drastic displacement and axial force development, which may bring pro- gressive collapse. The higher initial stiffness ensures that the structure has a stronger capacity to resist progressive collapse.
出处 《Transactions of Tianjin University》 EI CAS 2011年第6期461-468,共8页 天津大学学报(英文版)
基金 Supported by National Natural Science Foundation of China (No.50878066) Natural Science Foundation of Heilongjiang Province (No.ZJG0701) Heilongjiang Postdoctoral Science Foundation
关键词 substructure model concrete-filled steel tubular frame semi-rigid connection alternate path method dynamic analysis 半刚性连接 钢管混凝土 框架分析 连续倒塌 非线性动力学分析 结构模型 单元模型 初始刚度
  • 相关文献

参考文献1

二级参考文献16

  • 1GSA.Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major Modernization Projects,2003.
  • 2Dusenberry DO.Review of existing guidelines and provi- sions related to progressive collapse[].National Workshop on Prevention of Progressive Collapse in RosemontIll.2002
  • 3Japanese Society of Steel Construction Council on Tall Buildings and Urban Habitat.Guidelines for Collapse Control Design , Design[]..2005
  • 4Japanese Society of Steel Construction Council on Tall Buildings and Urban Habitat.Guidelines for Collapse Design.Ⅱ: Research[]..2005
  • 5MARJANISHVILI S M.Progressive analysis procedure for progressive collapse[].ASCE Journal of Performance of Constructed Facilities.2004
  • 6DAVID NBILOW,MAHMOUD KAMARA. U. S.General services administration progressive collapse design guidelines applied to concrete moment-resisting frame buildings[]..2004
  • 7NANCI BUSCEMI,SHALVA MARJANISHVILI.SDOF model for proressive collapse analysis[]..2005
  • 8GRAHAM POWELL.Progressive collapse: case studies using nonlinear analysis[]..2005
  • 9MEGURO K,HAKUNO M.Fracture Analyses of Concrete Structures by the Modified distinct element method[].Structure Engineering/ Earthquake Engineering JSCE.1989
  • 10MEGURO K,Hakuno M.Application of the extended distinct element method for collapse simulation of a double-deck bBridge[].Structure Engineering/Earthquake Engineering.1994

共引文献76

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部