Assessment of Deflection for Deck Slab Bridge

Birendra Kumar Singh

Abstract

The deflection of deck slab is found with respect to bending stress and normal stress and compared with its permissible value. Span of the deck slab plays an important role in deflection. As span increases more bending takes place hence we get more deflection against bending stress. Also normal stress increases due to increase in span since more load is involved. Width of deck slab is kept constant and span is varying. Due to more normal stress the deflection obtained is more. The deflection of a deck slab is an important factor to consider when designing and analyzing structural elements. The deflection of a slab refers to the amount that it bends or deforms under a given load. This deflection can be caused by both bending stress and normal stress. Bending stress occurs when a load is applied to a structural element, causing it to bend or deform. The amount of bending stress that a deck slab experiences is directly related to the span of the slab. As the span increases, the bending stress in the slab also increases, resulting in a greater deflection due to bending stress. Normal stress, also known as axial stress, occurs when a load is applied perpendicular to the cross-sectional area of a structural element. As the span of the deck slab increases, the load that is applied to the slab also increases, resulting in a greater normal stress. This increased normal stress also contributes to the deflection of the slab, resulting in a greater overall deflection due to normal stress. The width of the deck slab also plays a role in the stress and deflection analysis. In the case of normal stress, the width of the slab is a major factor in determining the amount of stress that is experienced. As the width of the slab increases, the normal stress decreases. However, in the case of bending stress, the width of the slab has a smaller effect on the amount of stress that is experienced.