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Analysis on Random Vibration of Highway-Bridge Structure
Author: YinLiHui
Tutor: WangZongLin
School: Harbin Institute of Technology
Course: Bridge and Tunnel Engineering
Keywords: Random vibration Coupled Vibration of Vehicle Deck flatness Bump Deck damage
CLC: U441.3
Type: Master's thesis
Year: 2007
Downloads: 316
Quote: 0
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Abstract
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Highway bridge structure of random vibration problem is only with the statistical regularities to solve the problem can not be deterministic methods and means to resolve . This paper presents a solution Axle Coupling System : on the basis of the use of existing general-purpose finite element software ANSYS , the vehicle system vibration excitation of the random factors into the form of the random vibration factor analysis of the axle coupling system investigated . Derived simplified model of single-degree-of-freedom system vehicle vibration equation , the simplified equations coupled with the bridge vibration , in accordance with the relevant theory , Bridge Coupling Vibration equation . Axle coupled system of random vibration analysis process , drawing on the pavement smoothness probability model , a probabilistic model of the deck flatness , Bump under the influence of the computational model proposed bridge damaged excitation calculation model and to establish a bridge Coupled Vibration equation . In this paper, the dynamic effects span simply supported beam bridge deck flatness, Bump and deck damage , deck flatness of the axle coupled system laws of probability analysis Bump axle coupled system the damaged bridge excitation axle coupled system , discussed the dynamic effects of the highway bridge structure with the vehicle speed , vehicle bridge the initial vibrational state , the deck smoothness grade , bridgehead road elevation, deck damage location changes presented variation .
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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge vibration and damping device
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