Abstract
THE INVESTIGATION OF STRUCTURAL PERFORMANCE OF MULTI-CELLULAR BOX CULVERTS USING COMPUTER PACKAGES
Abusamra Awad Attaelmanan Yousif*, Hakiman Thamrin
ABSTRACT
In this work, three types of reinforced concrete box culverts were considered to investigate the structural performance using the structural analysis program SAP2000 and ETABS18. The discharge was calculated from a hydrological study and the dimension of box culverts were obtained through hydraulic study. Different load cases and their combinations were considered as follows: dead loads, vehicular lives load, surcharge, water, and soil pressures. The soil was modeled as springs with various springs’ stiffness represented by the modulus of subgrade reaction. The results obtained from structural analysis were illustrated in graphical presentations to study the structural performance of the three types of box culverts Types 1, 2, and 3. It was taken the variations of internal forces (bending moments, shear, and axial forces) versus the height of internal and external walls for the three types of box culvert. The design of box culverts components was carried out using load resistance factor design (LRFD) according to the American Association of State Highway and Transportation Officials (AASHTO). From the variation of internal forces, it was concluded that box culvert Type 2 has the best performance compared with the other two box culverts. It is recommended to design wing walls to facilitate the discharge in the box culverts and a considerable amount of studies should be conducted for engineering studies.
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