Title: Investigating the effect of bridge pier material type and related parameters on local scour

Authors: Rehab Jan; Mohammad Akbar Lone

Addresses: Department of Civil Engineering, National Institute of Technology, Srinagar, Jammu and Kashmir, 190006, India ' Department of Civil Engineering, National Institute of Technology, Srinagar, Jammu and Kashmir, 190006, India

Abstract: Scouring endangers the stability of the hydraulic structures. Studies have considered varied parameters affecting scour around an obstacle. But no substantial work has been done on the impact of obstacle material type on local scouring. The present study analysed the impact of material type of the bridge pier and related parameters on local scour. Cylindrical pier shape was used to simulate the field conditions in the laboratory. Obstacles were made of brick, concrete, wood and steel. Results show noticeable effect of obstacle material on local scour. It was observed that the scour depth and surface roughness of obstacles were inversely correlated and similar was the relation of scour with water absorption. An empirical model was developed to ascertain the maximum scour depth incorporating obstacle parameters. The study will help in better accuracy of scour depth estimation and help in reducing local scour at certain critical junctions of the flow path.

Keywords: bridge; discharge; Froude number; hydraulic structure; obstacle; pier; scour; local scour; surface roughness; water absorption.

DOI: 10.1504/IJHST.2023.131185

International Journal of Hydrology Science and Technology, 2023 Vol.15 No.4, pp.421 - 434

Received: 01 Aug 2021
Accepted: 22 Jan 2022
Published online: 01 Jun 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article