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Urban elevated bridges car - bridge coupling time-varying system dynamic response analysis

Author: LiShuHui
Tutor: LiDeJian
School: Central South University
Course: Civil Engineering
Keywords: Urban elevated bridges Time-varying systems in the car - bridge coupling Dynamic Response Test analysis
CLC: U441.3
Type: Master's thesis
Year: 2011
Downloads: 32
Quote: 0
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Abstract


Urban elevated bridges because of its large capacity , high efficiency , play in the organization of urban transport plays an important role , but also due to its sleek , different styles , often become the beautiful landscape with the city . At the same time , we realize that it is caused due to the high density of vehicles that contained major car - the bridge dynamic response can not be ignored , is important to study the nature of law . By Xiaoxiang Road mainline viaduct linking the car - the bridge dynamic response analysis , text completed the main work is as follows : 1 . Introduced the domestic and international development of urban elevated bridges and the main problem , and recalled the time-varying vehicle bridge coupling system vehicle - bridge the main direction of the dynamic response of the dynamic response of the history and status quo of the problem , summarized at this stage of urban elevated bridges . 2 . Introduced this bridge structural dynamic response of the finite element model and deck irregularity simulation method , this vehicle dynamic response analysis model of the basic assumptions and the displacement mode . The use of flexible system of total potential energy value principle and the condemnation law \3 Introduction programming VBS - 2 main body of the structure and function of module preparation ideas in this article . Xiaoxiang Road mainline viaduct linking project overview , and the use of general-purpose finite element software to calculate the natural vibration characteristics of its full-bridge , to get a full-bridge the first 10 natural frequencies and mode shapes . 4 describes the Xiaoxiang Avenue mainline viaduct linking the content and method of dynamic and static load test , the selection of the bridge model for program verification VBS-2 unit divided and vehicle model parameters . The calculated results and experimental data were analyzed by the program . 5 . Use program VBS-2 ( driving speed of the vehicle -related parameters , load, driving distance, lane layout , etc. ) as well as the deck irregularity Xiaoxiang Road mainline the viaduct bridge structure and vehicle power response , concluded Xiaoxiang Avenue mainline viaduct linking the day - to - day operational management to provide a reference .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge vibration and damping device
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