钢框架组合结构的冲击倒塌分析与防倒措施研究

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Abstract Abstract: Research purposes: The study of the collapse and destruction of structures has been paid close attention widely. Based on an existent test model and its results, this paper proposed the critical condition of collapse and the corresponding protective methods when the impact load was acted on the steel frame-RC tube structures. It provided a guide for the research about the collapse of structure.

Research methods: A simulation analysis of the impact and collapse of the model structure with finite element software LS-DYNA was carried out. The analysis method was feasible after compared the results of the simulation analysis to the results of the test. Then, this paper analyzed 96 groups of the steel frame-RC tube structures using the same method, and formulated a simplified formula of the critical deflection for collapse using MATLAB. Finally, simulation analysis for the structure with protective measure against collapse was took with finite element software ABAQUS.

Research results: The results of the simulation analysis and the test were basically consistent. This paper returned the simplified formula of the critical deflection for collapse. The protective measure against collapse can significantly decrease the critical deflection for collapse of the structures.

Research conclusions: The method of the simulation analysis for the structure acted the impact load was feasible. The simplified formula was took which calculated accurately for the critical deflection for collapse. The results of the simulation analysis proved the measure against collapse to be valid.

Key words： blast impact steel frame structure FE analysis collapsed analysis critical deflection protective measure

Received: 12 May 2006

PACS:

TU332

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	XIONG Shi-shu
	PAN Qin-cun
	XIONG Ming-xiang

Cite this article:

XIONG Shi-shu,PAN Qin-cun,XIONG Ming-xiang. The Collapsed Analysis and Study of Protective Methods of Steel Frame with Composite Slab under Impact Load[J]. 铁道工程学报, 2006, 23(8): 53-57.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2006/V23/I8/53

[1]	赵振东,钟江荣,余世舟.钢混结构物受外来飞射体撞击的破坏效应研究[J].地震工程与工程振动,2003,23(5):88-94.
[5]	Samuel Tan. Cable-based retrofit of steel building floors to prevent progressive collapse [Z]. Master paper of University of California in Berkeley,2003.
[3]	H. X. Yu,J. Y. Richard Liew. Steel framed structures subjected to the combined effects of blast and fire-part1: State-of-the art review [J].International Journal of Advanced Steel Construction, 2005, 1(1):67-84.
[6]	Holmquist T J, Johnson G R, Cook W H. A computational constitutive model for concrete subjected to large strains, high strain rates, and high pressures [J]. 14th International Symposium on Ballistics, 1993(14):591-600.
[7]	T. T. Lie. Fire resistance of rectangular steel columns filled with bar-reinforced concrete [J]. Journal of Structural Engineering, 1995, 121(5):797-805.
[2]	B. M. Luooioni, R. D. Ambrosini, R. F. Danesi. Analysis of building collapse under blast loads [J].Engineering Structures, 2004(26):63-71.
[4]	H. X. Yu, J. Y. Richard Liew. Steel framed structures subjected to the combined effects of blast and fire-part 2: case study [J]. International Journal of Advanced Steel Construction, 2005, 1(1):67-84.