03474nam a2200409 4500 20260817171231.0 290798 th eng .b10109857 AIT Thesis no. ST-89-19 Ullah, Muhammad Zia Behaviour of an orthotropic steel bridge deck under concentrated wheel loads Bangkok : Asian Institute of Technology, 1989 113 p. Thesis ; no. ST-89-19 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1989 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. Bridge, Steel plate deck Wireland, Martin, Chairperson Pichai Nimityongskul, Examination Committee Gupta, Satyendra P., Examintion committee DAAD (West Germany), Scholarship Donor Asian Institute of Technology. Thesis ; no. ST-89-19 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B18131 .b10109857 mnait s 240411 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003064424 CREATED : 1995-10-13 RECORD # : i10122278 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003064432 CREATED : 1995-10-13 RECORD # : i1012228x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160068689 CREATED : 2016-08-04 RECORD # : i12932176 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 11437 11437 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. ST-89-19 30050003064424 2026-08-17 17:12:31 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. ST-89-19 30050003064432 2026-08-17 17:12:31 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. ST-89-19 30050160068689 2026-08-17 17:12:31 1 2026-08-17 40