Predicting Scour in Weak Rock of the Oregon Coast Range
Author | : S. E. Dickenson |
Publisher | : |
Total Pages | : |
Release | : 1999 |
Genre | : Scour at bridges |
ISBN | : |
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Author | : S. E. Dickenson |
Publisher | : |
Total Pages | : |
Release | : 1999 |
Genre | : Scour at bridges |
ISBN | : |
Author | : Michael W. Baillie |
Publisher | : |
Total Pages | : 160 |
Release | : 1998 |
Genre | : Bridges |
ISBN | : |
The undermining of bridge foundations can lead to either costly repairs or a bridge collapse. These foundations must be designed to counter the effects of scour. Current practice does not allow for accurate estimates of scour in erodible rock. Scour in rock can be related to geotechnical and hydraulic properties. A field study of eleven bridge sites provided samples of the bedrock where the abrasive resistance of the rock was determined and hydraulic properties of the channel were calculated. Laboratory abrasion resistance values from a modified slake durability test and hydraulic variables such as stream power were compared to recent and past stream channel cross-sections. A preliminary model has been proposed wherein the degradation of the stream channel is related to the abrasive resistance of the bedrock and the area under the daily stream power. This method provides an estimate of the degradation of the stream bed due to abrasion by bedload and flood events, not necessarily local or contraction scour.
Author | : Jeffrey Ray Keaton |
Publisher | : Transportation Research Board |
Total Pages | : 186 |
Release | : 2012 |
Genre | : Science |
ISBN | : 0309214114 |
"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.
Author | : Erik Bollaert |
Publisher | : CRC Press |
Total Pages | : 423 |
Release | : 2024-04-11 |
Genre | : Technology & Engineering |
ISBN | : 1040001122 |
This book examines the digitalization of rock scour engineering at dams and hydraulic structures. It outlines the current digitalization (technologies, applications, issues) in rock engineering, as well as the digital evolution that has strongly characterized the development of computational methods in state-of-the-art rock scour over recent years. The challenges of rock scour digitalization are also discussed, such as parametric standardization, real-time data acquisition, data analysis and interpretation, quantitative rock mass indices, new ways of thinking and digital twin implementation. Further, it presents the major components and characteristics that are needed to develop an environment that implements rock scour digitally into dam safety procedures and dam risk analyses, such as IT platforms, database availability, topology, physics, computational methods, phase coupling, accessibility, portability, reliability, real-time and ahead-of-time implementations and more. Features: Provides an overview of physics-based computational methods that have been developed by the engineering community over the last 20 years, which can easily be implemented digitally into cloud-based platforms. Offers examples of the next-generation computational environment, combining both real-time computational power and an up-to-date scour database allowing new parametric refinements. Includes several case studies of real-life rock scour. Presents the latest Digital Twin developments, which are novel and new to dam operations.
Author | : Norman S. MacLeod |
Publisher | : |
Total Pages | : 32 |
Release | : 1981 |
Genre | : Coast Ranges |
ISBN | : |
Author | : Clay Minerals Society |
Publisher | : |
Total Pages | : 44 |
Release | : 1977 |
Genre | : Clay minerals |
ISBN | : |
Author | : Gregory Bostrom |
Publisher | : |
Total Pages | : 7 |
Release | : 1997 |
Genre | : Estuarine area conservation |
ISBN | : |
Summarizes the nature of geologic rock formations found within Tillamook Bay drainage.
Author | : Gregory Bostrom |
Publisher | : |
Total Pages | : 6 |
Release | : 1997 |
Genre | : Estuarine sediments |
ISBN | : |