Download or read book Updating HEC 18 Pier Scour Equations for Noncohesive Soils written by Haoyin Shan and published by . This book was released on 2016 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: A dataset of 594 bridge pier scour observations from two laboratory and three field studies was compiled. The dataset served as the testing ground for evaluating potential enhancements to the pier scour tools for noncohesive soils in Hydraulic Engineering Circular 18 (HEC-18). In the current (fifth) edition of HEC-18, there are two primary equations for pier scour in noncohesive soils. One is the general equation applicable to most situations, including clear water and live bed conditions. The second is a coarse bed material equation recommended only for use under clear water conditions with coarse bed materials. The objective of this research was to determine if the coarse bed materials equation could be used for conditions beyond those under which it is currently limited. A framework for evaluating the two equations was developed using qualitative and quantitative tools. The coarse bed equation is referred to as the Hager number/gradation coefficient (HN/GC) equation because it references the use of both in the equation formulation. After adjusting the HN/GC equation to a target reliability index of 2.0, it was evaluated on its ability to predict scour for a wide range of conditions in noncohesive soils. Partitioned subsets of the data based on key conditions—including the HEC-18 coarse bed criteria, clear water versus live bed transport conditions, gradation, and median grain size—were used for the evaluation. The equation performed reasonably consistently in all partitioned datasets, leading to the conclusion that it may be used for a broader range of conditions. A subgroup of pier group scour observations was assessed to determine if the equation could also be used for pier groups. The equation performed better for single piers but offered a basis for predicting local scour at pier groups.
Download or read book Hydraulic Structures written by C S James and published by Springer Nature. This book was released on 2019-12-19 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This graduate/upper-division undergraduate textbook provides a solid grounding in the theory underlying the design and analysis of hydraulic structures, including spillways, energy dissipators, culverts, flow measuring structures and others. It describes well-established theory and procedures, as well as recent developments gleaned from the research literature, with a design-oriented perspective. Professor James provides all of the necessary detail for many practical design applications, while retaining a concise presentation, with ample references to many comprehensive supplementary design guides. Appropriate for upper-level undergraduate and graduate civil engineering student and practitioners in the field, the book fosters an understanding of and competence in applying basic theoretical concepts. Focuses on the hydraulic rather than structural aspects of hydraulic structures with an extensive review of relevant basic hydraulic theory; Explains clearly the concept of hydraulic control and how controls govern the behavior of different structures; Reinforces concepts presented with exercise problems set at the ends of chapters; Provides an extensive review of relevant basic hydraulic theory along with comprehensive references to primary sources and detailed design guides; Illustrates applications with topical worked examples.
Download or read book Life Cycle of Structures and Infrastructure Systems written by Fabio Biondini and published by CRC Press. This book was released on 2023-06-28 with total page 6293 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life-Cycle of Structures and Infrastructure Systems contains the lectures and papers presented at IALCCE 2023- The Eighth International Symposium on Life-Cycle Civil Engineering, held at Politecnico di Milano, Milan, Italy, 2-6 July, 2023. This book contains the full papers of 514 contributions presented at IALCCE 2023, including the Fazlur R. Khan Plenary Lecture, nine Keynote Lectures, and 504 technical papers from 45 countries. The papers cover recent advances and cutting-edge research in the field of life-cycle civil engineering, including emerging concepts and innovative applications related to life-cycle design, assessment, inspection, monitoring, repair, maintenance, rehabilitation, and management of structures and infrastructure systems under uncertainty. Major topics covered include life-cycle safety, reliability, risk, resilience and sustainability, life-cycle damaging processes, life-cycle design and assessment, life-cycle inspection and monitoring, life-cycle maintenance and management, life-cycle performance of special structures, life-cycle cost of structures and infrastructure systems, and life-cycle-oriented computational tools, among others. This Open Access Book provides both an up-to-date overview of the field of life-cycle civil engineering and significant contributions to the process of making more rational decisions to mitigate the life-cycle risk and improve the life-cycle reliability, resilience, and sustainability of structures and infrastructure systems exposed to multiple natural and human-made hazards in a changing climate. It will serve as a valuable reference to all concerned with life-cycle of civil engineering systems, including students, researchers, practicioners, consultants, contractors, decision makers, and representatives of managing bodies and public authorities from all branches of civil engineering.
Download or read book Evaluation of Pier scour Equations for Coarse bed Streams written by Katherine J. Chase and published by . This book was released on 2004 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Stream Stability and Scour at Highway Bridges written by Everett V. Richardson and published by ASCE Publications. This book was released on 1999-01-01 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sponsored by the Water Resources Engineering (Hydraulics) Divsion of ASCE. This collection contains 75 papers and 321 abstracts presented at conferences sponsored by the Water Resources Engineering (Hydraulics) Division of ASCE from 1991 through 1998. The collection contains many new and expanded versions of the original papers and is designed to assist the practitioner with the concepts in evaluating stream instability and scour at bridges. Topics include: history of bridge scour research; bridge scour determination; stream stability and geomorphology; construction scour; instrumentation for measuring and monitoring; field measurement; computer and physical modeling of bridge scour; scour at culverts; and economic and risk analysis. One important paper contains 384 field measurements of local scour at piers made by the U.S. Geological Survey.
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 Bridge Scour and Stream Instability Countermeasures written by U. S. Department of Transportation and published by . This book was released on 2015-10-27 with total page 0 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. In addition, guidance for the preparation of Plans of Action ...
Download or read book Scour at Bridge Foundations on Rock written by Jeffrey Ray Keaton and published by Transportation Research Board. This book was released on 2012 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report provides a methodology for estimating the time rate of scour and the design scour depth for a bridge founded on rock, as well as design and construction guidelines for application of the methodology. It will be of interest to hydraulic, bridge, and geotechnical engineers responsible for designing bridge foundations on rock or maintenance engineers concerned about existing bridges founded on erodible rock."--Foreword.
Download or read book Scour and Erosion written by John Harris and published by CRC Press. This book was released on 2016-10-14 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scour and Erosion includes four keynote lectures from world leading researchers cutting across the themes of scour and erosion, together with 132 peer-reviewed papers from 34 countries, covering the principal themes of: - internal erosion - sediment transport - grain scale to continuum scale - advanced numerical modelling of scour and erosion - terrestrial scour and erosion- river and estuarine erosion including scour around structures, and - management of scour/erosion and sediment, including hazard management and sedimentation in dams and reservoirs. Scour and Erosion is ideal for researchers and industry working at the forefront of scour and erosion, and has applications in both the freshwater and marine environments.
Download or read book Proceedings of the 3rd International Conference on Sustainability in Civil Engineering written by Thanh Bui-Tien and published by Springer Nature. This book was released on 2021-04-27 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the proceedings of the 3rd International Conference on Sustainability in Civil Engineering, ICSCE 2020, held on 26–27 November 2020, in Hanoi, Vietnam. It presents the expertise of scientists and engineers in academia and industry in the field of bridge and highway engineering, construction materials, environmental engineering, engineering in industry 4.0, geotechnical engineering, structural damage detection and health monitoring, structural engineering, geographic information system engineering, traffic, transportation and logistics engineering, water resources, estuary and coastal engineering.
Download or read book Manual on Scour at Bridges and Other Hydraulic Structures written by Amanda Kitchen and published by . This book was released on 2021 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling and Practice of Erosion and Sediment Transport under Change written by Mohamed Meddi and published by MDPI. This book was released on 2019-09-17 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate and anthropogenic changes impact the conditions of erosion and sediment transport in rivers. Rainfall variability and, in many places, the increase of rainfall intensity have a direct impact on rainfall erosivity. Increasing changes in demography have led to the acceleration of land cover changes in natural areas, as well as in cultivated areas, and, sometimes, in degraded areas and desertified landscapes. These anthropogenized landscapes are more sensitive to erosion. On the other hand, the increase in the number of dams in watersheds traps a great portion of sediment fluxes, which do not reach the sea in the same amount, nor at the same quality, with consequences on coastal geomorphodynamics. This book is dedicated to studies on sediment fluxes from continental areas to coastal areas, as well as observation, modeling, and impact analysis at different scales from watershed slopes to the outputs of large river basins. This book is concentrated on a number of keywords: “erosion” and “sediment transport”, “model” and “practice”, and “change”. The keywords are briefly discussed with respect to the relevant literature. The contributions in this book address observations and models based on laboratory and field data, allowing researchers to make use of such resources in practice under changing conditions.
Download or read book Open Channel Hydraulics written by A. Osman Akan and published by Elsevier. This book was released on 2011-02-24 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Open Channel Hydraulics is written for undergraduate and graduate civil engineering students, and practicing engineers.Written in clear and simple language, it introduces and explains all the main topics required for courses on open channel flows, using numerous worked examples to illustrate the key points.With coverage of both introduction to flows, practical guidance to the design of open channels, and more advanced topics such as bridge hydraulics and the problem of scour, Professor Akan's book offers an unparalleled user-friendly study of this important subject ·Clear and simple style suited for undergraduates and graduates alike ·Many solved problems and worked examples ·Practical and accessible guide to key aspects of open channel flow
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 Mobile bed Fluviology written by Thomas Blench and published by Edmonton, U. of Alberta. This book was released on 1969 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evolution of river beds and sedimentation, and how man has influenced them. The mathematics and hydraulics in this volume are kept simple.
Download or read book Flow in Open Channels written by K. Subramanya and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
