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Overload transportation impact study on fatigue performance of reinforced concrete bridge

Author: ZhaoYaMin
Tutor: WenYuSong
School: Central South University
Course: Bridge and Tunnel Engineering
Keywords: Overload transportation Reinforced concrete bridge Fatigue Performance Analysis Software Development Finite Element Method
CLC: U441.4
Type: Master's thesis
Year: 2007
Downloads: 281
Quote: 7
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Abstract


With the rapid development of road transportation , the bridge on the transport route can meet the overloaded vehicle transport needs of the development and take up large , heavy equipment transport tasks , as well as the overloading of vehicles through the fatigue performance of existing reinforced concrete bridges how much impact , this is an urgent need for concern . Overloaded vehicles thus strengthening efforts to the study of the impact of the bridge on the transportation routes is very practical significance . Conducted overloaded transportation impact study on the fatigue performance of existing reinforced concrete highway bridges , made ??the following main results : 1 . System principle , the analysis of fatigue damage and fatigue life prediction method of reinforced concrete structural fatigue damage analysis and summary. Plane finite element analysis model based on different vehicle types and different bridge span , the fatigue damage caused by the overloading of transport vehicles on existing reinforced concrete bridges qualitative and quantitative analysis , the results show that : the performance of static phase ratio, overloading of vehicles on both bridges fatigue performance to be more serious than doubled when the vehicle load increases , the degree of fatigue damage nearly 10 times larger . The fatigue life of reinforced concrete bridge should attract more attention . The Visual Basic language and large general-purpose finite element analysis software ANSYS APDL language both combined , the preparation of a reinforced concrete highway the arch bridge fatigue performance analysis software system , the system can be fully parameterized in the form of the establishment of a reinforced concrete arch bridge analysis model to calculate the degree of fatigue damage caused by a variety of vehicle types passage on the bridge , and to predict the remaining fatigue life of the bridge . Combined with a reinforced concrete arch bridge engineering examples , combat fatigue performance analysis of the changes as well as the remaining fatigue life prediction . The development of reinforced concrete arch bridge the fatigue performance analysis software system has certain application prospects and further expand the value .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge strength and fatigue damage
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