Abstract
This paper presents results of an investigation on the effects of different parameters on the structural behavior of a skewed integral bridge. Flow velocities affected the scour depths at the piles, and subsequently, affected the structural behavior of the bridge’s substructure. Different loading locations had varying influences on the scour depth, as well as the structural behavior of the integral bridge. Laboratory tests on a scaled down hydraulic model were undertaken to simulate the structural behavior of the scoured integral bridge. The scale of the model was chosen to simulate the actual bridge dimensions, material properties, and loading. Three different velocities were accounted for, based on the actual flow velocities of the river under the bridge, and were scaled according to the model size. Two different truck locations were adopted. The main data acquired from the experiment were the displacements and strains at specific locations on the deck slab and piles. Specifically, the results of this investigation can be utilized to identify and provide accurate design parameters for the design of a skewed integral bridge. Furthermore, results can subsequently be applied in the design of a better scour protection system.
Highlights
There is an increasing need to replace the current stock of bridges in Malaysia, as modern bridge systems have a lower overall cost
The results demonstrated that, in the first 50 min, there was a rapid increase in scour depth, after 500 min, the increase slowed
Research and innovation regarding the effects of different parameters on the structural behaviour of a skewed integral bridge were introduced in this study
Summary
There is an increasing need to replace the current stock of bridges in Malaysia, as modern bridge systems have a lower overall cost. Bridges that are less than 60 m in total length are more economical and cost effective if designed as integral bridges having full structural continuity and fewer expansion joints. In view of these requirements, integral bridges have become feasible alternatives and a dramatic increase has been noted in the construction of such bridges in Malaysia. Since the use of integral bridges is still relatively new in Malaysia, design factors relating to the effects of natural hazards and local weather, as well as environmental conditions, are unavailable and have yet to be established. The scope of this investigation is the effect of floods on skewed integral bridge; flood related problem such as scour and its effect on skewed integral bridges are investigated. Fu et al (2011) found that skew angle increases slightly the effects the total strain/stress due to truck load. Saber and Alaywan (2011) conducted an experiment on full-scale test of continuity diaphragms in skewed concrete bridge girders
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
