Civil Engineering Webinar: Pressure-flow scour in bridges due to vertical contraction | Shiv Nadar University
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Civil Engineering Webinar: Pressure-flow scour in bridges due to vertical contraction

Event Date: 
Thursday, March 31, 2022 -
12:3014:00

The Department of Civil Engineering invites you for a webinar titled “Pressure-flow scour in bridges due to vertical contraction” by Dr. Shivam Tripathi (Associate ProfessorDepartment of Civil Engineering, IIT Kanpur) on Thursday, 31 March 2022 from 12:30 PM to 2:00 PM. The talk will be moderated by Dr. Gopal Das Singhal (Associate Professor, Shiv Nadar University, Delhi-NCR) and Dr. Ellora Padhi (Assistant Professor, Shiv Nadar University, Delhi-NCR).

Abstract
Bridges are often designed with the assumption that they will not get submerged.  Yet, every year in India, many bridges get submerged and washed away during monsoon floods. Recent studies on climate change have warned that the frequency of such flood events may increase in future. During a flood event, when water surface elevation rises above the lower chord of the bridge, the flow under the bridge transits from free-surface to pressure-flow. The flow velocity, hence, sediment transportation capacity, increases during the pressure-flow conditions. This results in increased bed scouring that can lead to bridge failure. Nevertheless, Indian bridge design codes have no provisions for estimating pressure-flow scour. This presentation will give an overview of the pressure-flow scour phenomenon, and describe experiments carried out at IIT Kanpur to investigate it. The confounding aspects of the pressure-flow scour along with the role of stochastic nature of bed shear stresses in determining scour profile will be discussed.

Thursday 31, Mar 2022
12:30 PM - 02:00 PM

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