Sub-structure Models and Analysis Method for Multi-story Steel Frame Structures under Fire

陈适才; 田小明; 田相凯

doi:10.13409/j.cnki.jdpme.2012.s1.006

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Sub-structure Models and Analysis Method for Multi-story Steel Frame Structures under Fire

更新时间：2025-12-11

- Sub-structure Models and Analysis Method for Multi-story Steel Frame Structures under Fire
- Vol. 32, Issue S1, Pages: 25-29(2012)
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- DOI：10.13409/j.cnki.jdpme.2012.s1.006
  CLC： U973.13
- Published：2012
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[1]陈适才,田小明,田相凯.多高层钢结构耐火性能的子结构分析模型与分析方法[J].防灾减灾工程学报,2012,32(S1):25-29.

陈适才, 田小明, 田相凯. Sub-structure Models and Analysis Method for Multi-story Steel Frame Structures under Fire[J]. 2012, 32(S1): 25-29.
[1]陈适才,田小明,田相凯.多高层钢结构耐火性能的子结构分析模型与分析方法[J].防灾减灾工程学报,2012,32(S1):25-29. DOI： 10.13409/j.cnki.jdpme.2012.s1.006.

陈适才, 田小明, 田相凯. Sub-structure Models and Analysis Method for Multi-story Steel Frame Structures under Fire[J]. 2012, 32(S1): 25-29. DOI： 10.13409/j.cnki.jdpme.2012.s1.006.

摘要

基于整体钢结构在局部火灾下的反应规律

将高层钢结构的初始倒塌破坏类型进行了分类（中间柱初始倒塌、边柱初始倒塌以及梁柱同时倒塌）

根据整体结构约束影响和荷载影响

提出局部火灾下多高层钢结构耐火性能分析的相应子结构分析模型及其分析方法。子结构模型的边界充分考虑周围约束的影响

尤其是周围梁和上层柱构件以及层数的影响。针对不同类型的子结构模型

通过建立相应的具体子结构有限元模型

合理考虑边界条件的影响。最后基于建立的数值模型

研究了子结构的火灾反应规律与破坏机理

并与整体结构的分析结果进行了比较

结果表明:子结构分析模型与分析方法可以合理准确地分析整体结构的耐火性能。

Abstract

Based on the fire behavior of steel structures subjected to local fire

the collapse mechanism of buildings initiated by the localized fire can be classified as: interior column buckling

exterior column buckling and interactive failure.Corresponding sub-structure analysis models

taking the effect of loading and constraint into account

are introduced to analyze the performance of steel structures under fire.The constraint boundary conditions such as the neighboring beams

columns and the surrounding floors are considered.Finite element models are developed to simulate the fire response of the substructure.Results obtained by proposed models are compared with those of the monolithic steel structure.It is shown that the sub-structure analysis models are feasible to simulate and assess the performance of multi-story steel structures under fire.

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references

钢框架足尺结构火灾试验方案研究 [J]. 贾宝荣,董毓利,范明瑞,李晓东. 防灾减灾工程学报 . 2006(01)

钢结构及钢－混凝土组合结构抗火设计[M]. 中国建筑工业出版社 , 李国强[等]著, 2006

3-D nonlinear dynamic progressive collapse analysis of multi-storey steel composite frame buildings — Parametric study [J] . Feng Fu. Engineering Structures . 2010 (12)

Nonlinear Plastic Hinge Analysis of Three-Dimensional Steel Frames in Fire [J] . K. Y. Ma,J. Y. Richard Liew. Journal of Structural Engineering . 2004 (7)

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