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Optimal Design of Suspender Replacement in Concrete Filled Steel Tubulur Arch Bridge

Author: YinTao
Tutor: GaoRongXiong
School: Huazhong University of Science and Technology
Course: Bridge and Tunnel Engineering
Keywords: CFST Arch Bridge Bending energy minimum Dress iterative method Boom replacement Optimal design
CLC: U448.22
Type: Master's thesis
Year: 2011
Downloads: 44
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Abstract


In the past two decades , China's rapid development of CFST arch bridge CFST Arch Bridge is a world leading level . However, with the increase of the hours of operation of the CFST Arch Bridge , as well as fatigue , corrosion , and other reasons , in recent years, there have been CFST Arch Bridge boom appears damaged , more and more concrete filled steel tubular arch bridge facing boom replacement . Therefore it is necessary to optimize the design of research of Concrete Filled Steel Tubular Arch Bridge replacement . In this paper, a bridge engineering background , using the finite element software replacement to optimize the design and analysis of steel pipe concrete arch bridge suspender force boom . The main content of this paper include : 1 , CFST Arch Bridge boom in constant force under live load analysis, constant boom of the internal forces of law under live load and constant live load on the boom Force Influence proportion. Replacement of steel pipe concrete boom optimized design , including cable force target value to optimize the design and cable tension value of the optimal design . General conclusions boom replacement optimization design optimization using the the zero displacement method and the bending energy minimization method compared tension cable force value optimization using impact matrix method and dress iterative method contrast , get cable force target value . 3 , on the bridge dead load unoptimized and optimized structural analysis and comparison . Comparing the results through the structure of the internal forces , to evaluate the effect of optimized . 4 , bridge optimized operational state structure analysis and the results show that the minimum bending energy law suits iterative method of CFST Arch Bridge replacement boom optimization design is feasible and effective .

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