| Author | Ullah, Muhammad Zia |
| Call Number | AIT Thesis no. ST-89-19 |
| Subject(s) | Bridge, Steel plate deck
|
| Note | A thesis submitted in partial fulfillment of the requirements for
the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The static behaviour of a typical segment of the orthotropic steel
deck of the Rama IX cable-stayed bridge under heavy wheel loads is
analysed. Two types of structural models are investigated, i.e. , a
three-dimensional (3-D) finite element system using shell elements is
employed to analyse the spatial stress distribution in the pavement under
wheel loads; and a plane strain (2-D) model of the cross-section is used
to investigate the stress distribution and deformation in the asphaltic
concrete pavement. The effect of the position of the wheels relative to
the longitudinal stiffeners is also studied using different 3-D and 2-D
structural models. In the 3-D analysis linear-elastic material behaviour
is assumed whereas in the 2-D model elasto-plastic behaviour of the
asphaltic concrete is also assumed. A parametric study is carried out
to cover the whole practical range of pavement stiffness . Large
reductions in the stiffness of asphaltic concrete are mainly caused by
temperature effects which for the deck surface of the Rama IX cable-stayed
bridge can exceed 60 °C. All finite element analyses of the orthotropic
steel bridge deck models have been carried out by the educational version
of the computer program ANSYS. The results clearly show that the asphalt
pavement and the steel deck plate act compositely, this leads to a
significant reduction in the stresses in the steel deck plate. It is
concluded that a stiff pavement (concrete deck) is most suitable for an
orthotropic bridge deck subjected to high axle loads and high
temperatures. |
| Year | 1989 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Wireland, Martin
|
| Examination Committee(s) | Pichai Nimityongskul ;Gupta, Satyendra P.
|
| Scholarship Donor(s) | DAAD (West Germany) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1989 |