Download or read book Countermeasures to Protect Bridge Piers from Scour written by Peter Frederick Lagasse and published by Transportation Research Board. This book was released on 2007 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores practical selection criteria for bridge-pier scour countermeasures; guidelines and specifications for the design and construction of those countermeasures; and guidelines for their inspection, maintenance, and performance evaluation. Produced along with the report is an interactive version of the countermeasure selection methodology, which defines the proper conditions for the use of each specific countermeasure, and a reference document that contains detailed laboratory testing results and translations of three German "Code of Practice" documents.
Download or read book Countermeasures to Protect Bridge Piers from Scour written by Gary Parker and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Countermeasures to Protect Bridge Abutments from Scour written by Brian D. Barkdoll and published by Transportation Research Board. This book was released on 2007 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines selection criteria and guidelines for the design and construction of countermeasures to protect bridge abutments and approach embankments from scour damage. The report explores two common forms of bridge abutments--wing-wall (vertical face with angled walls into the bank) and spill-through (angled face).
Download or read book Bridge Scour and Stream Instability Countermeasures written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2015-03-10 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication identifies and provides design guidelines for bridge scour and stream instability countermeasures that have been implemented by various State departments of transportation (DOTs) in the United States. Countermeasure experience, selection, and design guidance are consolidated from other FHWA publications in this document to support a comprehensive analysis of scour and stream instability problems and provide a range of solutions to those problems. Selected innovative countermeasure concepts and guidance derived from practice outside the United States are introduced. Management strategies and guidance for developing a Plan of Action for scour critical bridges are outlined, and guidance is provided for scour monitoring using portable and fixed instrumentation. The results of recently completed National Cooperative Highway Research Program (NCHRP) projects are incorporated in the design guidance, including: countermeasures to protect bridge piers and abutments from scour; riprap design criteria, specifications, and quality control; and environmentally sensitive channel and bank protection measures. This additional material required expanding HEC-23 to two volumes. Volume 1 now contains a complete chapter on riprap design, specifications, and quality control as well as an expanded chapter on biotechnical countermeasures. The guidance on scour monitoring instrumentation has been updated and now includes additional installation case studies. Volume 2 contains 19 detailed design guidelines grouped into six categories, including countermeasures for: (1) stream instability (2) streambank and roadway embankment protection, (3) bridge pier protection, (4) abutment protection, (5) filter design, and (6) special applications.
Download or read book Countermeasures to Protect Bridge Piers from Scour written by Gary Parker and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bridge Scour and Stream Instability Countermeasures written by U.s. Department of Transportation and published by CreateSpace. This book was released on 2015-03-10 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication identifies and provides design guidelines for bridge scour and stream instability countermeasures that have been implemented by various State departments of transportation (DOTs) in the United States. Countermeasure experience, selection, and design guidance are consolidated from other FHWA publications in this document to support a comprehensive analysis of scour and stream instability problems and provide a range of solutions to those problems. Selected innovative countermeasure concepts and guidance derived from practice outside the United States are introduced. Management strategies and guidance for developing a Plan of Action for scour critical bridges are outlined, and guidance is provided for scour monitoring using portable and fixed instrumentation. The results of recently completed National Cooperative Highway Research Program (NCHRP) projects are incorporated in the design guidance, including: countermeasures to protect bridge piers and abutments from scour; riprap design criteria, specifications, and quality control; and environmentally sensitive channel and bank protection measures. This additional material required expanding HEC-23 to two volumes. Volume 1 now contains a complete chapter on riprap design, specifications, and quality control as well as an expanded chapter on biotechnical countermeasures. The guidance on scour monitoring instrumentation has been updated and now includes additional installation case studies. Volume 2 contains 19 detailed design guidelines grouped into six categories, including countermeasures for: (1) stream instability (2) streambank and roadway embankment protection, (3) bridge pier protection, (4) abutment protection, (5) filter design, and (6) special applications.
Download or read book Bridge Scour and Stream Instability Countermeasures Experience Selection and Design Guidance Third Edition written by U. S. Department of Transportation and published by Lulu.com. This book was released on 2015-10-31 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this document is to identify and provide design guidelines for bridge scour and stream instability countermeasures that have been implemented by various State departments of transportation (DOTs) in the United States. Countermeasure experience, selection, and design guidance are consolidated from other FHWA publications in this document to support a comprehensive analysis of scour and stream instability problems and provide a range of solutions to those problems. The results of recently completed National Cooperative Highway Research Program (NCHRP) projects are incorporated in the design guidance, including: countermeasures to protect bridge piers and abutments from scour; riprap design criteria, specifications, and quality control, and environmentally sensitive channel and bank protection measures. Selected innovative countermeasure concepts and guidance derived from practice outside the United States are introduced.
Download or read book Stream Instability Bridge Scour and Countermeasures A Field Guide for Bridge Inspectors written by Transportation Dept., Federal Highway Administration and published by Government Printing Office. This book was released on with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: FHWA Publication No. FHWA-NHI-08-0106. February 2009. Explains the behavior of rivers in order to recognize changing conditions associated with unstable streams or scour at bridge foundations that may threaten the stability of the bridge. Provides tips and guidance on what to look for with regard to both stream instability, including lateral instability, degradation, and aggradation, and scour at bridges, including contraction scour, pier scour, and abutment scour. Also covered are plans of action and countermeasures, such as monitoring, flood watches, bridge closures, and river training countermeasures.
Download or read book CIGOS 2021 Emerging Technologies and Applications for Green Infrastructure written by Cuong Ha-Minh and published by Springer Nature. This book was released on 2021-10-28 with total page 1861 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the key role of green infrastructure (GI) in providing natural and ecosystem solutions, helping alleviate many of the environmental, social, and economic problems caused by rapid urbanization. The book gathers the emerging technologies and applications in various disciplines involving geotechnics, civil engineering, and structures, which are presented in numerous high-quality papers by worldwide researchers, practitioners, policymakers, and entrepreneurs at the 6th CIGOS event, 2021. Moreover, by sharing knowledge and experiences around emerging GI technologies and policy issues, the book aims at encouraging adoption of GI technologies as well as building capacity for implementing GI practices at all scales. This book is useful for researchers and professionals in designing, building, and managing sustainable buildings and infrastructure.
Download or read book Bridge Scour written by Bruce W. Melville and published by Water Resources Publication. This book was released on 2000 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A comprehensive state-of-the-art treatment of scour and bridge foundations - both a handy reference text and a manual for the practicing bridge designer."--Publisher.
Download or read book Handbook of Scour Countermeasures Designs written by Anil Kumar Agrawal and published by . This book was released on 2007 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study of Scour Protection Alternatives at Bridge Piers written by and published by . This book was released on 1996 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Riprap Design Criteria Recommended Specifications and Quality Control written by Peter Frederick Lagasse and published by Transportation Research Board. This book was released on 2006 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 568: Riprap Design Criteria, Recommended Specifications, and Quality Control examines design guidelines; recommended material specifications and test methods; recommended construction specifications; and construction, inspection, and quality control guidelines for riprap for a range of applications, including revetment on streams and riverbanks, bridge piers and abutments, and bridge scour countermeasures such as guide banks and spurs.
Download or read book Pier and Contraction Scour in Cohesive Soils written by J.-L. Briaud and published by Transportation Research Board. This book was released on 2004 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Research sponsored by the American Association of State Highway and Transportation Officials in cooperation with the Federal Highway Administration."
Download or read book Scour and Erosion written by Susan Burns and published by . This book was released on 2014 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protection from Scour of Bridge Piers Using Riprap written by Richard Norman Croad and published by . This book was released on 1997 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book AIR INJECTION AS A SCOUR COUNTERMEASURE AT BRIDGE PIERS written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : Local scour is a major cause of concern for the stability of bridge piers and the safety of the public using the bridges. Structural countermeasures and flow-altering devices have been developed to deal with local scour. Many armoring structural countermeasures are very effective and efficient in clear water conditions but are susceptible to moving bed forms and leaching. The flow-altering devices are effective in both clear water conditions and moving bed forms, but are prone to clogging, less efficient in changing flow direction, etc. This study aims to reduce the local scour by injecting air in order to reduce the effect of the scour-inducing downward roller flow pattern by harnessing the buoyancy of the injected air bubbles. A clear-water scour experimental study is conducted in a rectangular channel with a pier embedded in a sand bed. Air is injected through a horizontal diffuser pipe wound around the upstream half of the cylindrical bridge pier. Measurements were taken for maximum local scour depth, water surface profile, rate of scour, centerline scour elevation and channel bed profile at the equilibrium condition. The ratio of velocity of air to the velocity of water (Va/Vw) was chosen as the non-dimensional variable for this study and was considered the most suitable representation and for ease of scalability. The air injection reduced the local scour at bridge piers in equilibrium conditions by nearly 35%. This scour reduction is caused by a change in flow patterns around the bridge piers with the injection of air bubbles. A dye test was performed for the base case (without air injection) and the optimal case (Va/Vw = 57.1) to observe the change in flow behavior around the pier.
