Hydrological Analysis Construction of Bridge

Abstract

Hydrological analysis is a important component for design of bridges that cross water courses. This is not necessary for under passing of bridges as they do not convey water. Because of the importance of hydraulics in the performance and safety of most bridges. The hydraulic design is the process for sizing of the bridge waterway opening will include the evaluation of water surface in the main channel for present conditions and for particular conditions. A comparison of the elevations between these two conditions shall be made to identify the effects of the bridge on the waterway. Hydrological investigations are the preliminary studies which shall be carried out and they are highly important during design and construction process. This study focused on carrying out of necessary hydrological investigations, such as estimation of probable maximum discharge, design discharge corresponding to storm event with different return periods and scour information and calculation. By the use of catchment area the design discharge is calculated in different methods. Main aim of this proposed bridge is planned to connect the villages of Rudrapattana and Basavapattana side and there will be saving in travel distance of over 15-20km for villagers, which is the main connecting road for surrounding area.

Keywords; Discharge, Hydraulic Survey, Scour Depth, Topographic Survey.