A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Optimized design of integral abutments for a three span composite bridge
The aim of the thesis is to analyse the foundation piles supporting the bridge over Dalälven River in the middle-east Sweden, which is designed as an integral abutment bridge. The analytical part of the work includes the checking of stresses in piles supporting integral abutments. The piles that are considered are steel piles with three different cross-sections: pipe pile with outer diameter equals 219.1 mm and 12.5 mm thick and two different cross-sections of X piles (200x30mm and 180x24 mm), which are the Swedish innovation in the field of integral abutments bridges. The piles analysed are loaded with vertical force and subjected to horizontal displacement caused by contracting and expanding under influence of temperature changes, but also by breaking and accelerating of vehicles on the bridge and shrinking and creeping of a concrete bridge deck. The particular attention is paid to the influence of displacements perpendicular to the longitudinal axis of the pile for the pile’s behaviour. In this analysis the behaviour of pile depends a lot on soil surrounding the pile. In connection with this fact the author paid also attention to modelling behaviour of different types of soil in the process of analysing and designing. In the thesis the possible solutions enabling reduce the stresses in piles are also considered. The analysis of the structure is done with the help of two computer programs using Finite Element Method and with the help of simplified method. In the Swedish program named CONTRAM considered structure is analysed as a flat frame (two-dimensional model), in the program SOFiSTiK the bridge is modelled as a three-dimensional structure, however the simplified analysis concerned only the vertical piles loaded with a vertical axial force and subjected to lateral and rotational displacements at the pile top. The methods and models used are described and compared. Furthermore, rather an extensive review of available literature related to designing of integral bridges is included in the thesis. In the thesis ...
Optimized design of integral abutments for a three span composite bridge
The aim of the thesis is to analyse the foundation piles supporting the bridge over Dalälven River in the middle-east Sweden, which is designed as an integral abutment bridge. The analytical part of the work includes the checking of stresses in piles supporting integral abutments. The piles that are considered are steel piles with three different cross-sections: pipe pile with outer diameter equals 219.1 mm and 12.5 mm thick and two different cross-sections of X piles (200x30mm and 180x24 mm), which are the Swedish innovation in the field of integral abutments bridges. The piles analysed are loaded with vertical force and subjected to horizontal displacement caused by contracting and expanding under influence of temperature changes, but also by breaking and accelerating of vehicles on the bridge and shrinking and creeping of a concrete bridge deck. The particular attention is paid to the influence of displacements perpendicular to the longitudinal axis of the pile for the pile’s behaviour. In this analysis the behaviour of pile depends a lot on soil surrounding the pile. In connection with this fact the author paid also attention to modelling behaviour of different types of soil in the process of analysing and designing. In the thesis the possible solutions enabling reduce the stresses in piles are also considered. The analysis of the structure is done with the help of two computer programs using Finite Element Method and with the help of simplified method. In the Swedish program named CONTRAM considered structure is analysed as a flat frame (two-dimensional model), in the program SOFiSTiK the bridge is modelled as a three-dimensional structure, however the simplified analysis concerned only the vertical piles loaded with a vertical axial force and subjected to lateral and rotational displacements at the pile top. The methods and models used are described and compared. Furthermore, rather an extensive review of available literature related to designing of integral bridges is included in the thesis. In the thesis ...
Optimized design of integral abutments for a three span composite bridge
Tlustochowicz, Gabriela (author)
2005-01-01
Theses
Electronic Resource
English
DDC:
624
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