Bridge construction is a very exacting type of construction that needs to address various forces and design principles. The science behind the design of a bridge is critical, but so is the use of the right type of construction materials, even down to the smallest components.
One of the small components that play an essential role in any bridge construction project is the shear connector. This is small to a larger sized inverted bolt-looking component that is attached to the top flanges of the bridge’s steel girders.
The protracting shear connector is placed along the length of the top flange of the girder to create an attachment between the slab and the girder. This attachment causes what is known as composite action. This is the ability of two dissimilar materials, when connected, to become stronger and stiffer than either used in isolation.
The Pattern
There are several different aspects to consider when considering the pattern or placement of the shear connector series on the girder. Typically these are used in two parallel rows with the placement apart of each of the connectors based on standards and regulation that are proven to allow for the necessary composite action.
Through this pattern, the concrete and the steel of the girders will be bonded together. This will be essential to prevent the bridge from sagging or twisting between bridge supports as well as in creating a level, flat surface for vehicles, trains, and traffic.
There are different options in these connectors. Most have a definite head that will be the top, protruding part of the connector once it is welded onto the girder. There is also the possibility to use a block and hoop connectors, but the standard headed connector is the most common for bridge building and construction applications.
