Analysis on Stability and Ultimate Bearing Capacity of Steel Truss Arch Bridge

Yang Liu; Xing Rui Wang; Gang Yang; Ai Feng Zhang

doi:10.4028/www.scientific.net/AMM.178-181.2299

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 178-181Analysis on Stability and Ultimate Bearing...

Analysis on Stability and Ultimate Bearing Capacity of Steel Truss Arch Bridge

Abstract:

Based on the secondary development of ANSYS, a through-type steel truss arch bridge is modeled, and the most unfavorable position of live load for each concerning location of the bridge is determined by using the influence lines program self-developed with parametric language. Linear elastic stability analysis of the whole bridge is firstly conducted, and followed by calculating the ultimate bearing capacity of the bridge with the consideration of geometrical and material nonlinearity of structure. By analyzing the buckling modes and safety coefficients of two types of stability problems, and comparing the linear elastic and nonlinear stability analysis results, the first type stability analysis, as a non-conservative method, is found to be suitable for ideal structures; the second stability analysis is found to be completely different from the first stability analysis, with different buckling mode and lower stability coefficient. Therefore, it can be concluded that the ultimate carrying capacity of structures should be determined based on the second stability analysis.

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Periodical:

Applied Mechanics and Materials (Volumes 178-181)

Pages:

2299-2303

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.178-181.2299

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Online since:

May 2012

Authors:

Yang Liu, Xing Rui Wang, Gang Yang, Ai Feng Zhang

Keywords:

Bucking Mode, Nonlinear Finite Element, Safety Stability Coefficient, Steel Truss Arch Bridges, Ultimate Carrying Capacity

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References

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