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Six red River cable-stayed bridge overall performance and girders, towers local performance

Author: LiBin
Tutor: ShengXingWang
School: Central South University
Course: Civil Engineering
Keywords: Cable-stayed bridge Concrete Girder - plate section Finite Element Shear Lag Effective width
CLC: U448.27
Type: Master's thesis
Year: 2011
Downloads: 25
Quote: 0
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Abstract


In this paper, Guizhou Six red River Bridge under construction (195 438 195) m prestressed concrete cable-stayed bridge research background, large finite element software based on the needs of the bridge construction , a more systematic analysis of the the concrete main beam cable-stayed bridge the static stability , seismic performance , more in - depth studies of the Sarasota stress field and girder - plate shear lag effect . The main work and results : were used large bridge analysis software and mechanical analysis software , to establish a bridge finite element model of the different cell types , and the Sarasota stress field and the main beam shear lag analysis of local analytical models , each the results between the model has been printed with each other , and the efficacy of mechanical analysis of the reliability of the finite element model . Mechanical analysis results based on the bridge construction , bridge stage , the design structure of the existing highway bridge design specifications fully judge the efficacy of reasonable design . First class stability problems of bridge stability and complete earthquake E1 under time history analysis , the results show that : the bridge has good stability and seismic performance . The pylon \A more in-depth exploration of the bridge girder - plate shear lag effect , the effective width coefficient , and the cable force in the main beam pass effect : (1) calculate the typical cross-section in the dead load and full cross cloth set out the distribution of the stress state under the bridge panel , thus giving the bridge deck under constant loads shear lag coefficient is 1.036-1.348 , corresponding to the effective width coefficient η values ??in the 0.731-0.964 between . (2 ) applied to the section model single cable force to explore the cable-stayed the longitudinal horizontal component passed in the main beam , results show that : the the longitudinal horizontal component of cable force in the bridge deck stress diffusion angle of approximately 30.7 °.

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