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Research on Concept Design of Beam-Arch Association Bridges

Author: ZuoCuiCui
Tutor: ChenShaoFeng
School: Harbin Institute of Technology
Course: Bridge and Tunnel Engineering
Keywords: Beam arch combination bridge Conceptual design The principle of displacement compatibility Target force Target -shaped
CLC: U442.5
Type: Master's thesis
Year: 2011
Downloads: 73
Quote: 1
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Abstract


Beam arch combination bridge because of its beautiful shape and reasonable force characteristics , to the rapid development of modern long-span bridges , the engineers usually busy time frame for construction in accordance with the specifications, the provisions of the design , the lack of the overall design concept of bridge grasp. For the conceptual design of the beam arch combination bridge . Reviewed and mechanical analysis of the conceptual design of the bridge and explore a beam arch combination of bridge design parameter selection , in addition to the parameters arch beam load distribution . After that, the study of the beam arch combination bridge boom target force and target -shaped algorithm . Finally, the use of the target force algorithm for solving practical engineering example to draw the initial tension values ??in the finite element model of the different stages of analysis . Mainly to obtain the understanding and the results are as follows : (1) definition , in principle, to the process given the complete process of the bridge concept design ideas . Mechanical analysis, analysis of the mechanical properties of a simple beam bridge arch bridge girder and arch combination bridge and the beam arch combination of bridge from the formal classification , structural analysis, construction method for a basic overview of the selection of parameters , pointed out the need to pay attention to the design of structural requirements . Finally , through the establishment of a simple beam arch combination of structural model analysis, the arch beam stiffness ratio and different rise -span ratio the arch beam load distribution . ( 2 ) the use of force principle of single cable structures prestressed force characteristics , and then study the prestressed case the target force and target - shaped algorithm . Thus derived by numerical relationship between the study prestressed case of a plurality of cable structures target force and the initial tension , the numerical relationship between the arch beam composite structure Dorgan cable target force and initial tension . Using ANSYS to calculate simple math examples to prove the correctness of theoretical analysis . ( 3 ) the use of force principle derived combination of beam structure of the target force algorithm for solving initial tension value actual engineering structures Yuhe Bridge drawn to achieve the target cable force of two construction stages . Prove the correctness of the theoretical analysis through the use of ANSYS . The results of deeper understanding of beam arch combination bridge concept design provides a theoretical basis .

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CLC: > Transportation > Road transport > Bridges and Culverts > Investigation, design and calculation > Bridge Design
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