Temporal variation of clear water scour at cylindrical bridge piers

Date

2006-08-01

Author

Yanmaz, Ali Melih

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

214
views

0
downloads

Computation of temporal variation of clear water scour is important for the design of bridge pier footings. Previous studies indicated that very long flow duration was needed to achieve equilibrium scouring situations. However, the corresponding durations in the prototype conditions may yield considerably larger values than time-to-peak of the design flood. Therefore, there is a need to estimate the temporal variation of scour depth. This study deals with the development of a new semiempirical method for temporal variation of clear water scour at cylindrical bridge piers using the sediment continuity approach. A recent sediment pickup function proposed for sloping beds is used to formulate the rate of sediment transport out of the scour hole. Results of the proposed method agree well with experimental results. The findings of the proposed method are also compared with some recent empirical methods.

Subject Keywords

Civil and Structural Engineering, General Environmental Science

URI

https://hdl.handle.net/11511/46282

Journal

CANADIAN JOURNAL OF CIVIL ENGINEERING

DOI

https://doi.org/10.1139/l06-054

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Analytical and experimental investigation of temporal variation of clear water scour depth at bridge abutments Köse, Ömer; Yanmaz, Ali Melih; Department of Civil Engineering (2007) Computation of temporal variation of clear water scour is important for the design of bridge foundations. Previous studies conducted for determining equilibrium scour depth at bridge abutments indicated that very long flow duration was needed to achieve equilibrium scouring situations. However, the corresponding durations in the prototype conditions may yield considerably greater values than time to peak of the design flood. Therefore, there is a need to estimate the temporal variation of scour depth. An ex...
Reduction of scouring depth by using inclined piers Bozkuş, Zafer (Canadian Science Publishing, 2010-12-01) The aim of this experimental study is to examine the effect of inclination of dual bridge piers on scour depth under clear-water conditions for various uniform flow depths. Duration of 4 h was used in the experiments for each run. Scour depths were measured at four different points around the piers. The depths of local scour around inclined piers were found to be substantially smaller than the scour depths around vertical piers. Dimensional and nondimensional curves were developed and presented to show the ...
Reliability-based optimization of river bridges using artificial intelligence techniques Turan, K. Hakan; Yanmaz, Ali Melih (Canadian Science Publishing, 2011-10-01) Proper bridge design is based on joint consideration of structural, hydraulic, and geotechnical conformities. An optimization-based methodology has been developed to obtain appropriate dimensions of a river bridge to meet these aspects. Structural and geotechnical design parts use a statistically-based artificial neural network (ANN) model. Therefore, relevant data were collected from many bridge projects and analyzed to form a matrix. Artificial neural network architectures are used in the objective functi...
Analytical formulation of maximum length limits of integral bridges on cohesive soils Dicleli, Murat (Canadian Science Publishing, 2005-08-01) This paper presents an analytical approach for predicting the length limits of integral bridges built on cohesive soils based on the flexural strength of the abutments and the low cycle fatigue performance of the steel H-piles at the abutments under cyclic thermal loading. First, H-piles that can accommodate large inelastic deformations are determined considering their local buckling instability. Then, a damage model is used to determine the maximum cyclic deformations that such piles can sustain. Next, non...
Temporal scour development at bridge abutments with a collar Kumcu, Serife Yurdaguel; Goegues, Mustafa; Koekpinar, Mehmet Ali (Canadian Science Publishing, 2007-04-01) This study investigated the reduction of scour around a vertical-wall bridge abutment using rectangular collars for clear-water flow conditions over uniform sediment particles in a laboratory flume. Collars of different sizes and at different elevations were tested to determine the temporal variation of scour depth around the bridge abutment. The development of scour around the abutments with and without a collar for a time period of 6 h was studied, and observed scour depths were compared. Experimental res...

Citation Formats

A. M. Yanmaz, “Temporal variation of clear water scour at cylindrical bridge piers,” CANADIAN JOURNAL OF CIVIL ENGINEERING, pp. 1098–1102, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/46282.