The Analysis of Double-Nonlinearity Stability of Concrete Filled Steel-Tube Arch Bridge
Xing Han, Bing Zhu, Gui Man Liu, Jun Ping Wang, Bao Xiang
Abstract
Xing Han, Bing Zhu, Gui Man Liu, Jun Ping Wang, Bao Xiang
Abstract
Taking a concrete-filled steel tube arch bridge with a span of 80m for example, the paper studies the stability of this bridge by using the general finite element program. The analysis introduces the method to deal with the stability of these bridges by FEM, also demonstrates the result of the eigenvalue analysis and dual nonlinear analysis according to an example. In eigenvalue analysis, the influence of the brace and the X-brace to this arch bridge`s stability are compared under different load cases; in dual nonlinear analysis, the load-displacement curves of three different load cases of the rib failure are given. All of these are some valuable to the stability of the concrete-filled steel tube arch bridge.
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Taking a concrete-filled steel tube arch bridge with a span of 80m for example, the paper studies the stability of this bridge by using the general finite element program. The analysis introduces the method to deal with the stability of these bridges by FEM, also demonstrates the result of the eigenvalue analysis and dual nonlinear analysis according to an example. In eigenvalue analysis, the influence of the brace and the X-brace to this arch bridge`s stability are compared under different load cases; in dual nonlinear analysis, the load-displacement curves of three different load cases of the rib failure are given. All of these are some valuable to the stability of the concrete-filled steel tube arch bridge.
Key concepts: Structural engineering, Brace, Finite element method, Arch, Engineering, Bridge (graph theory), Stability (learning theory), Arch bridge