Design Consideration of Underpass type of Bridge Structure As per Indian Standard

Abstract

Bridge is most useful structure for highway Structures and under pass structures in without any obstruction of Crossing Road Traffic, and easily flow out the traffic on main road. In Bridge structures, many type of vehicles like small vehicles, light vehicles and heavy vehicles are flowing in every time, so main concept of bridge is how to become a safe under various types of loading condition of vehicles in one direction. In this paper shows the Design consideration for Design and construction of Underpass Bridge Structure. Generally, the load of vehicles is Both side disperse in 45 degrees from edge of tire of vehicle in both longitudinal and lateral directions. The dispersion of vehicle is effect on the underpass Structure and other factor like geometry, windload, Earthquakeload, friction forces,materials,construction method, andaesthetics this are all the factor is considered and design the underpass Structure. The underpass structure in VUP and PUP Structure are used with Box Type Structure and Directly Supported on Soil. If Available SBC is low then Span width is prefer to increase and Flyover Type Structure in Superstructure is supported on Substructure and Substructure is Supported on the foundation. The load is Transfer from the Deck Slab to the Pier and Abutment via longitudinal Girder and then Directly load Transfer to soil from Foundation of Structure/ The design of underpass is generally used with RCC, and Construction cost is low as compare to other type of Large Structure. This type of Structure Through get much more advantage without disturbing the traffic and provide proper safety in this type of structure. Here in this paper shows the which type of consideration is considered for design of underpass as per the Indian standard.