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The Effect on the Stability of the Wind Vibration of Large Span Suspension Bridge and Treatment Method

Author: ZhuRong
Tutor: XiaoGuangHong
School: Chongqing Jiaotong University
Course: Structural Engineering
Keywords: suspension bridge nonlinear wind-resistant stability ratio of widthand span tunnel test critical wind speed
CLC: U448.25
Type: Master's thesis
Year: 2013
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Abstract


Suspension bridge is now as a long-span soft structure is concerned, For the wind isvery sensitive, Wind stability now has become a suspension bridge influence thedesign and construction of the key. How to improve the design and construction ofsuspension bridge wind stability is very important. Wide span suspension bridge isinfluence the overall structural design is one of the main factors. For medium spansuspension bridge, theory of wide span ratio should be greater than1/30, this bridge tohave enough lateral stiffness. But for many medium span suspension bridge is noguarantee that such an index, wide span ratio is usually less than1/30, or even somestill reach1/60, for such kind of suspension bridge on the stability of wind resistanceis very urgent and necessary.Xinjiang "my lap Kruger suspension bridge by single span steel analysis framesuspension bridge, the bridge is the stiffening girder is very close to two truss andcomposition, main cable of center distance is4m, wide span ratio of1/69.5. Asuspension bridge wind stability study is very important, its content involves thebridge site in the wind-induced response of the static and dynamic response, windcharacteristic parameters and wind stability control measures, etc.The paper summarizes the development of suspension bridge, bridge equivalentwind load theory, nonlinear aerostatic stability theory and large span suspensionbridge nonlinear aerostatic stability practical method, in order to "my lap Krugersuspension bridge as the research object, the wind stability dynamic analysis. Papermain research content is: the dynamic character of the structure calculation, the staticresponse calculation analysis, dynamic response calculation analysis and large spansuspension bridge nonlinear aerostatic stability practical method.

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