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Large-span suspension bridge in the construction process, power and static wind stability analysis

Author: WuShiYi
Tutor: LiuLaiJun
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Suspension Bridge Dynamic characteristics Static wind-resistant design Static instability critical wind speed Finite Element
CLC: U441.3
Type: Master's thesis
Year: 2005
Downloads: 205
Quote: 4
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Abstract


The unique characteristics of Suspension Bridge , temporary hinged lifting beam during the beam segment , the structure is changing , the stiffness changes accordingly ; binding suspension bridge geometry remarkable feature of nonlinear dynamic properties of the whole construction process to further analysis of the suspension bridge . The suspension bridge wind effect , has been a subject of concern people and made ??some valuable static Wind stability needs further study , but during the construction of the suspension bridge main girder . Thesis Lancang River suspension bridge engineering background , and analysis of large finite element the Ansys program and existing literature on the bridge during the construction of the power and lifting beam during static wind stability . The papers from the finite displacement theory and nonlinear theory of the finite element method and finite element simulation analysis , the study of the variation of the dynamic characteristics of the construction during major construction process of the suspension bridge structure dynamic , grasp the variation of the structural stiffness of the suspension bridge during construction determine the most dangerous state . The paper uses a combination of incremental and iterative calculation method , during the period of the suspension bridge stiffening girder lifting structural static wind effects of nonlinear analysis , research the static instability critical wind speed and structure of static wind lateral response with the beam segment lifting completion rates change law, the angle of attack of wind speed on the static structural instability critical wind speed and structural response to wind and provide a theoretical basis for the construction during the static wind resistant design . The paper results can be used during the construction of similar suspension bridge power and static wind resistance analysis to provide a reference .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge vibration and damping device
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