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Showing 1 to 11 of 11 for “"bridge abutments"”.
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Evaluating Shallow-Flow Rock Structures as Scour Countermeasures at Bridges
… rock structures could reliably be used at bridge abutments in place of riprap. Research was conducted in a two-phase effort beginning with numerical modeling and ending with field verification of model findings. As part of phase one, two finite element meshes were created in Surface-water …
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Assessment of HEC-18 equations for NCHRP abutment scour based on Kansas field data
Bridge failures are caused by many different failure mechanisms, not the least of which is scour. Scour occurs due to the erosion of streambed or bank material due to flowing water and is often considered as being localized. Recently the National Cooperative Highway Research Program (NCHRP) drafted …
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The relationship between slope stability and pore-water pressure in highly plastic clay in the Carrot River Basin
… Movement at the Carrot River and Smoky Burn bridge sites persists, compromising the integrity of the bridge structures. In addition, movement persists along an embankment constructed between 1990 and 1992. Residual shear strength parameters, Φᵣ' = 7.6° with c' = 0 were determined for three …
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IMPACT OF SOIL-STRUCTURE INTERACTION ON SEISMIC BEHAVIOUR OF INTEGRAL ABUTMENT BRIDGES
… behaviour of infrastructure, such as integral bridges, during seismic loading will allow bridge and geotechnical engineers to design these bridges to operate safely during and after earthquake loading and, therefore, reduce the risk of loss of lives and infrastructure damage. Renovating, …
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Investigation of Required Tensile Strength Predicted by Current Reinforced Soil Design Methodologies
… in walls, culverts, rock fall barriers, and bridge abutments. Its use in walls and abutments is similar to Mechanically Stabilized Earth Walls (MSEW) reinforced with geosynthetics. Both GRS and MSEW are reinforced soil technologies that use reinforcement to provide tensile capacity within …
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Track model for predicting dynamic responses of railroad bridge approaches
… on the development of a novel train-track-bridge model that can analytically tackle the difficult problem of a railway track transition zone and effectively simulate the dynamic response of a bridge approach subjected to moving train loads. The scope of the research encompassed statistical …
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Erosion behavior and scour risk of extremely coarse streambeds
Bridge scour, which is the erosion of soil and rock around bridge abutments and piers, is the principal cause of bridge failure in the United States and around the world. Previous investigations of scour have focused mostly on fine sediments such as sand, silt, and small gravel, because such …
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Seismic performance assessment of quasi-isolated highway bridges with seat-type abutments
… against earthquake hazards. For highway bridges, isolation physically decouples a bridge superstructure from its substructures resting on a shaking ground, leading to a significant reduction in the seismic forces transmitted from the superstructure to the substructures and foundations. …