Dynamic Elasto-Plastic Analysis on the Steel Spatial Arch Truss with 120 m Span and 0.2 Rise-Span Ratio

Abstract:

The elasto-plastic dynamic response on the steel-pipe arch truss with 120 m span and 0.2 rise-span ratio is analyzed in this paper under earthquake wave with SAP2000, the geometric and material nonlinear effects are considered during the analysis simultaneously based on the plastic hinge theory. Under the action of EL-Centro waves with the peak increasing gradually, its elasto-plastic dynamic responses have been obtained. The results show that its failure mode under the earthquake action is elasto-plastic dynamic buckling; that its critical peak acceleration of EL-Centro waves when applied in horizontal direction is 644 gal and is 375 gal when applied in vertical direction; The ratio of its maximal node horizontal displacement and its rise-height is 1/538, and its displacement ductility coefficient is 1.3 and the ratio of its bars with plastic hinge appearing when buckling is 3.28% when EL-Centro waves applied on structure in horizontal direction; The ratio of its maximal node vertical displacement and its structural rise-height is 1/1136, and its displacement ductility coefficient is 1.03 and the ratio of its bars with plastic hinge appearing when buckling is 1.5% when EL-Centro waves applied in vertical direction.

• Periodical: Applied Mechanics and Materials (Volumes 94-96)
• Pages: 201-204
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.94-96.201
• Online since: September 2011
• Authors: Hai Wang Li, Guo Juan Li, Jing Liu
• Keywords: Elasto-Plastic Dynamic Response, Plastic Hinge, Steel Arch Truss, Time History Analysis

References

[1] Haiwang LI, Xuefeng SHU and Fei ZHI: A new function for large-span civil buildings Proceedingsof the International Association for Shell and Spatial Structures (IASS) Symposium 2009, 28 September – 2 October 2009, Universidad Politecnica de Valencia, Spain:358-359

[2] Civil King Software Technology Co., Ltd.China institute of Building Standard Design & Research.Usage guide to Structure Analysis Program 2000 Chinese edition [CP].China Communications Press.(In Chinese)

[3] GB50011-2001(2008 edition) Code for seismic design of buildings[S]. Beijing: China architecture & building press, 2008. (In Chinese)

[4] FEMA 356 The Seismic Rehabilitation of Buildings[S]. Federal Emergency Management Agency,(2000)

[5] Shizhao Shen and Xin Chen: Dynamic stability of grid structure[M]．Beijing, Science Press,1999.(In Chinese)

[6] Haiwang LI, Jianxian LI, Fei ZHI, Fu MA and Dongqi QIN: A parameter study on dynamic buckling of spatial arch trusses under seismic action. Proceedings of the 6th International Conference on Computation of Shell and Spatial Structures IASS-IACM 2008: "Spanning Nano to Mega" 28-31 May 2008, Cornell University, Ithaca, NY, USA

DOI: 10.1016/j.engstruct.2007.07.002