Experimental Studies Of Local Scour At Cylindrical Pier Fitted With Collar

Sabita Madhvi Singh*, P.R. Maiti**
* Research Scholar, Department of Civil Engineering, Indian Institute of Technology( Banaras Hindu University), Varanasi, India.
** Assistant Professor, Department of Civil Engineering, Indian Institute of Technology (Banaras Hindu University) Varanasi, India.
Periodicity:June - August'2013
DOI : https://doi.org/10.26634/jce.3.3.2387


Flow in an open channel with an erodible bed is usually accompanied by transport of sediments. Scour may occur as a result of natural changes of flow in the channel or as a result of man-made activities, such as construction of bridge pier structures in river bed. The present study aims to investigate the intense of local scour around circular pier fitted with collar. For this purpose, experiments are carried out in the laboratory flume. The channel of the bed is prepared by laying uniform size of Ganga sand. In this study, the sand bed in the open channel is similar to erodible bed with two rigid wall boundary of the flume. The two collars are used with dimensions 2D and 3D with eccentric to the cylindrical pier, where D is the diameter of cylindrical pier. The effect of collar on scour is studied experimentally and presented. The efficiency of reduction of scouring is observed when the pier is fitted with collar.


Cylindrical Piers, Scour Depth, Collar.

How to Cite this Article?

Singh, S, M., and Maiti, P. M. (2013). Experimental Studies Of Local Scour At Cylindrical Pier Fitted With Collar. i-manager’s Journal on Civil Engineering, 3(3),10-15. https://doi.org/10.26634/jce.3.3.2387


[1]. Dey, S., &Raikar, R.V. (2007). Clear-water scour at piers in sand beds with an armour layer of gravels. Journal of Hydraulic Engineering, ASCE, 133 (6), 703-711.
[2]. Kumar, V., RangaRaju, K.G., &Vittal, N. (1999). Reduction of local scour around bridge piers using slots and collars. Journal of Hydraulic Engineering, ASCE, 125(12), 1302- 1305.
[3]. Singh, C.P., Setia, B., &Verma, D.V.S. (2001). Collar-sleeve combination as a scour protection device around a circular pier. 29th Congress on Hydraulics of River, Water Works and Machinery. Chinese Hydraulic Engineering Society, Beijing, China, 16-21September (pp. 202-209).
[4]. Zarrati, A.M., Nazariha, M., &Mashahir, M.B. (2006). Reduction of local scour in the vicinity of bridge pier groups using collars and riprap. Journal of Hydraulic Engineering, ASCE, 132(2), 154-162.
[5]. Masjedi, A., Bejestan, M.S., &Esfandi, A. (2010). Reduction of local scour at a bridge pier using collar in a 180 degree flume bend. Journal of Applied Sciences, 10, 124-131.
[6]. Khassaf Al-saadi S.I, &Md. Abed R.S. (2012). Experimental studies of local scour around Circular pier fitted with collar, KUFA Journal of Engineering, 3 (2), 87-100.
[7]. Ettema, R. (1980). Scour at bridge piers(Doctoral dissertation). Auckland University, Auckland, New Zealand.
[8]. Alabi, P.D. (2006). Time development of local scour at bridge pier fitted with a collar(Doctoral dissertation). University of Saskatchewan, Saskatoon, Canada.
[9]. Dargahi, B. (1990). Controlling mechanism of local scouring. Journal of Hydraulic Engineering, ASCE, 116 (10), 1197-1214.
[10] Tabarestani M. K., &Zarrati A.R. (2012). Effect of collar on time development and extent of scour hole around cylindrical bridge piers, IJE Transactions C, 25 (1),11-16.
[11]. Singh, SabitaMadhvi and Maiti, P. R. (2012). Flow Characteristics around a circular bluff body, International Conference on Emerging Trends in Engineering and Technology, 6-7 April, College of Engineering, Teerthankar Mahaveer University, Moradabad.
[12]. Singh, S. M. (2012). Analysis of flow field around cylindrical structure, 6th International Conference on Advance Computing and Communication Technologies, 3 November, Asia Pacific Institute of Information Technology, Panipat, organized by IEEE.
[13]. Singh, S. M. and Maiti, P. R. (2012). Local scouring around a circular pier in open channel, International Journal of Emerging Technology and Advanced Engineering, 2 (5), 454 - 458.
[14]. Singh, S. M. (2013). Analysis of vortex around bluff body, Indian Journal of Applied Research, 3 (6), 223-226.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe
India Rest of world
Pdf 35 35 200 20
Online 35 35 200 15
Pdf & Online 35 35 400 25

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.