Download or read book Local Scour Around Differently Shaped Bridge Piers An Experimental Investigation written by Kaleem Afzal and published by GRIN Verlag. This book was released on 2020-02-06 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bachelor Thesis from the year 2019 in the subject Physics - Mechanics, University of Engineering & Technology Peshawar, language: English, abstract: The objective of the study is to conduct laboratory model testing to investigate and compare scour hole depth of the diamond, square and elliptical scaled model of bridge piers in a cohesion less bedding material under clear water and to propose the most efficient cross section of the bridge pier, having less Local scour around piers under steady clear-water condition was studied experimentally for a variety of configuration, including different sizes and shapes of piers. Total number of forty experiments were performed in the flume using diamond, square and elliptical shape. The scouring around the square shape was found maximum and at elliptical shape was the least. The main reason was obstruction in flow area that was more in case of the square and less in case of the elliptical shape. However, the diamond shaped has the intermediate scouring under same condition. Local scour is a complex phenomenon involving three-dimensional flow, typically developed around piers founded in movable bed rivers. Local scour can lead to partial failure or to collapse of bridge piers because of the high flood velocity. The cost of large bridges, with common and special complex piers, justifies carrying out an accurate prediction of scour depth, for both economic and safety reasons, which in turn leads to the interest of hydraulic engineers in predicting the equilibrium scour depth.
Download or read book Scour Around Bridge Piers written by Gordon R. Hopkins and published by . This book was released on 1975 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scour Around Circular Bridge Piers at High Froude Numbers written by Subhash Chandra Jain and published by . This book was released on 1979 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of laboratory experiments on scour around circular piers in cohesionless bed material at high Froude numbers, F, up to 1.5 are presented. The scour depths in sediment transport regime (F is greater than F sub c) first slightly decreases and then increases with the increase in the Froude number. A formula to predict the scour depth at Froude numbers (F-F sub c) is equal to or greater than 0.15, is developed. The limitations of some of the existing predictors of local scour are discussed, and a new formula to predict the maximum clearwater scour is proposed.
Download or read book Experimental and Numerical Study of Local Scour Around Side by side Bridge Piers Under Ice covered Conditions written by Mohammad Reza Namaee and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Local scour around piers and abutments is one of the main causes of the collapse of many bridges constructed inside rivers. Many researchers have conducted various studies to predict the maximum depth of a scour hole around bridge piers and abutments. However, most of them have been done in small-scale laboratory flumes and specifically for the open channel condition. Besides, most of the existing research on bridge piers uses uniform sediment which is not an appropriate representative of natural river systems. This can result in excessively conservative design values for scour in low risk or non-critical hydrologic conditions. The most severe cases of bridge pier scouring occur in cold regions when the surface of water turns into ice in which, an additional boundary layer is being added to the water surface, which leads to significant changes in the flow field and scour pattern around bridge piers. Ice cover also causes the maximum flow velocity to move closer to the channel bed.
Download or read book Scour Around Bridges written by National Research Council (U.S.). Committee on Surface Drainage of Highways and published by . This book was released on 1951 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scour Around Bridge Piers at High Flow Velocities written by Edward Ernst Fischer and published by . This book was released on 1979 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scour Around Bridge Piers written by Gordon Ray Hopkins and published by . This book was released on 1980 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Available theories and prediction formulas on scour at bridge waterways are reviewed. Formulas that offer potential for prediction of scour around bridge piers are compared by reducing each formula to a non-dimensional form that includes Froude Number, the ratio of scour depth to pier width, and the ratio of stage to pier width. A field study to gather data on scour and related variables is described. The study is aimed at collecting field data in order to furnish a basis on which to compare scour prediction formulas.
Download or read book Scouring written by H.N.C. Breusers and published by CRC Press. This book was released on 2020-08-13 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information and technical data concerning scouring/erosion caused by water fl in rivers and streams. More specifically, how certain structures exaggerate this natural process by restricting water flow, causing constriction and loc scour. Material presented is from both field studies and laboratories
Download or read book Water Security and Sustainability written by Chandrashekhar Bhuiyan and published by Springer Nature. This book was released on 2021-02-22 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected peer-reviewed papers presented in the International Conference Down To Earth 2019, and is focused on Water Security and Sustainability. The topics covered in this book include sustainability of water resources, geospatial modelling and hydro-informatics, extreme hydrology (drought and flood), adaptation to climate-change impacts, vulnerability-risk-reliability-resilience, and hydrological risks in north-east India. The book also discusses innovative techniques and technologies for water resources assessment and management. Enriched with numerous case studies covering diverse topics, the book can be valuable for students, researchers, as well as industry professionals interested in water resources assessment, management and sustainable development.
Download or read book River Mechanics written by Hsieh Wen Shen and published by . This book was released on 1971 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Model Study of Scour Around Bridge Piers written by Richard Starr Boswell and published by . This book was released on 1975 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scour Around Bridge Piers written by and published by . This book was released on 1975 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Scour Around Bridge Piers written by T−ojir−o Ishihara and published by . This book was released on 195? with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of Scour Around Bridge Piers written by and published by . This book was released on 2003 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Local Scour Around Bridge Piers written by Hsieh Wen Shen and published by . This book was released on 1968 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Local Scour Around Bridge Piers in Pressure Flow written by Laila M. Abed and published by . This book was released on 1991 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scour Around Bridge Piers written by R. H. Couldrey and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
