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Under through CFST arch bridge space stability ultimate bearing capacity research

Author: LiuFang
Tutor: LiDeJian；ChenJun
School: Central South University
Course: Architecture and Civil Engineering
Keywords: CFST Arch Bridge Stability Horizontal load Geometric nonlinearity Material nonlinearity
CLC: U448.22
Type: Master's thesis
Year: 2008
Downloads: 160
Quote: 2
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Abstract


CFST Arch Bridge with its unique advantages , has been widely adopted . With arch bridge span structure to withstand the load increases , the steel tubular arch stability and ultimate bearing capacity problems in the construction phase and the operational phase is more prominent. Large Span CFST Arch Bridge Stability and ultimate bearing capacity of the research has important theoretical significance and value of the works . This paper summarizes the research of scholars in the analysis of the stability and ultimate bearing capacity of CFST Arch Bridge , systematic exposition of the theory of stability and ultimate bearing capacity of CFST Arch Bridge . CFST Arch Bridge in Hanzhong City engineering background , and to optimize the use of large finite element software ANSYS Rib Concrete infusion process and stage five bridge conditions eigenvalue buckling analysis , geometric nonlinear buckling analysis and double line linear buckling analysis ; its relevant parameter analysis , quantified span ratio , horizontal linkages, arch axis offset physical and geometric characteristics of indicators into the the bridge use phase stability and ultimate bearing capacity of CFST Arch Bridge . Provides a meaningful reference for the design and construction of such a bridge . In addition , the Roll Stability of Large Span CFST , respectively, consider the case of linear elastic and geometric nonlinear analysis of a different magnitude of horizontal wind loads affect the stability of the bridge roll . Studies have shown that the geometric nonlinear stability analysis of the results of the linear elastic stability analysis results less bridge stability coefficient decreased to no more than and different measure horizontal wind loads . Accurately obtained by geometric and material nonlinear finite element analysis of the bridge , the bridge actual stability factor , the results show that the line based on the double nonlinear stability coefficient than the elastic analysis and geometric nonlinear analysis results greatly decreased .

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Arch bridge
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