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Study on Mechanical Performance and Structure of Through Flexible Tied Arch Bridge

Author: BaiFuZhou
Tutor: DiShengKui
School: Lanzhou University of Technology
Course: Bridge and Tunnel Engineering
Keywords: Lower Supported Flexible Tied Arch Bridge Mechanical Properties
CLC: U441
Type: Master's thesis
Year: 2011
Downloads: 44
Quote: 0
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Abstract


Arch Bridge is one of the oldest bridge the arch ring does not need to withstand strong moments and tensile stress, due to its structural features, which makes better compression capability and cheap economy, drawing convenience masonry work material can be applied to such bridge type. With the development of modern bridges, optimization of the mechanical properties and beautiful economy has become the development direction of the arch bridge. Currently arch bridge derived in many forms, one of which is to overcome the strong horizontal thrust of the arch foot tied arch bridge Tied to self-balance. However, in the study of this bridge, by force performance research literature, little specific under-supporting flexible Tied Arch Bridge. Of bridge-type structure and the mechanical characteristics, and strive to provide a reference for bridge design and application value. In order to better study the characteristics of the force of the under-supporting flexible Tied Arch Bridge, the authors designed and produced a clear force transfer experimental under-supporting flexible tied arch bridge model, this paper, the model for the study, using a combination of The structural characteristics of this type of bridge and the mechanical characteristics of finite element simulation and experimental methods discussed from different angles and with an engineering example of the dynamic performance of this type of bridge. This paper is divided into five chapters, the main contents are as follows: (1) describes the history of the arch bridge development, arch bridge, the course of development of this particular bridge type and structural characteristics Tied Arch Bridge, and introduces the research background, meaning and content. (2) describes the experimental model of production and selection of the arch axis, discusses the deck under partial load, the rib, the deformed shape of the bridge deck system and boom and sphere of influence. (3) discusses the different boundary conditions Rib, Department of the mechanical characteristics of the lever, and analyze the power characteristics of the three boundary conditions as well as the impact of the three boundary conditions under the arch displacement relationship arch foot local The stress analysis, drawn useful conclusions. (4) through static analysis, dynamic analysis, and stability analysis, to explore the \The analysis results comparing the advantages and disadvantages of the form of the four wind bracing for bridge wind bracing Selection provide references. (5) with engineering examples, real bridge dynamic response analysis by finite element analysis and field ambient vibration test method, and the results of the two methods from the control, to verify the reliability of conclusions, and provide valuable power characteristics data. (6) summarizes the content and results of this research, and pointed out that there may be omissions in this study, and also need to continue in-depth study.

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics
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