The Appropriate Ratio between Width and Depth of a Concrete Bridge Deck Joint Shoulder for Preventing Damage from Truck Loadings
DOI: 10.14416/j.ind.tech.2022.04.007
Keywords:
Truck loadings, Joint shoulder, Aspect ratioAbstract
The main objective of this study is to investigate the appropriate ratio between width and depth of a concrete bridge deck joint shoulder for preventing damage from truck loadings. The study has been carried out by performing a static load test on six different patterns of concrete bridge deck joint shoulders. The test joint shoulders possess different widths and depths or aspect ratios. The specimens were tested statically under a combination of simulated wheel and braking loads. The test results revealed that the ultimate load-carrying capacity of the joint shoulders mainly depended on the aspect ratio of the joint shoulder. The maximum load-carrying capacity was obtained when the aspect ratio was greater than one such as 1.33, 1.5 and 2. However, when the aspect ratio was equal to one the maximum load-carrying capacity was much lower compared to their counterparts. To prevent joint shoulder damage, in practice, the minimum aspect ratio of 1.33 is recommended for bridge deck joint shoulder construction. The results from this study could be further used to improve the design standard for more durable bridge deck joint shoulder construction. Subsequently, the damage to the shoulder from truck loading could be significantly reduced.
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