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Showing 1 to 20 of 58 for “"abutment"”.
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Integral bridge abutment and backfill behaviour
… in conventional bridges. Interaction between the abutments and backfill due to thermal movements of the bridge deck leads to the accumulation of soil strain — known as strain ratcheting — which results in increased lateral earth pressures along with settlement at the bridge approach. Uncertainty …
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Structural behavior of integral abutment bridge approach slabs
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Field monitoring of integral abutment bridge approach slabs
Integral abutment bridges (IABs) eliminate the joints between the deck and abutments and hence have become more prevalent in the U.S. due to lower maintenance costs and longer service life. Cracking of approach slabs immediately adjacent to IABs, which requires maintenance, repair, and even …
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Numerical and field data analysis of integral abutment bridges
DSpace SAF Submission Ingestion Package generated from Vireo submission #9491 on 2016-07-07 at 13:33:06
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Determination of rear abutment zones by SH channel wave velocity
Includes bibliographical references (pages 177-187).
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CONICAL IMPLANT-ABUTMENT CONNECTIONS: A 3D MICRO-CT AND MICROBIOLOGICAL ANALYSIS
L'abstract è presente nell'allegato / the abstract is in the attachment
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Assessment of structural concrete approach slab cracking at integral abutment bridges
… bridge deck and approach slabs in an integral abutment bridge (IAB) decreases the potential for water and salt damage to the bridge superstructure and bearings. However, the lack of expansion joints in an IAB can lead to complex interactions between the superstructure and substructure, which …
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Seismic behavior and design of integral abutment bridges in southern Illinois
The increased use of integral abutment bridges (IABs) throughout the United States has led to numerous studies concerning their behavior when subjected to a variety of loads. The seismic behavior of IABs is of particular interest to regions such as southern Illinois, where proximity to the New …
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Field monitoring and numerical analysis of two Illinois integral abutment bridges
… to conventional jointed bridges, integral abutment bridges (IABs) require lower construction and maintenance costs and have a longer service life, leading to their increased use by Departments of Transportation in the U.S. However, due to their unique design, their structural behavior is …
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Measurement and evaluation of the performance of an integral abutment bridge deck
… is based upon the instrumentation of an integral abutment bridge, with a reinforced concrete deck on 3-span, continuous steel girders. The bridge is located in Evansville, West Virginia, at the intersection of WV Route 92 South and US Route 50 East. An instrumentation system was developed to …
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Evaluation of implant restoration retention on various custom abutment materials and surfaces
… crowns requires selecting the appropriate abutment materials, surface characteristics, and cement type, based on finding the right balance between the desired level of retention form and the potential need for retrievability for each patient case. The purpose of this study was to evaluate …
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Combined abutment and contraction scour in compound channels for extreme flood events
In this PhD project, the combination of abutment and contraction scour is investigated to better understand the scour mechanisms and scour patterns for extreme floods. Close-toreality scour events were physically simulated using models built at 1:45 and 1:30 geometric scales of two-lane bridge …
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Illinois integral abutment bridges: behavior under extreme thermal loading and design recommendations
… (IDOT) has increasingly constructed integral abutment bridges (IABs) over the past few decades, similar to many other states. Throughout the United States, IABs are preferred over conventional bridge construction because they are generally cheaper and easier to construct; have lower …
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IMPACT OF SOIL-STRUCTURE INTERACTION ON SEISMIC BEHAVIOUR OF INTEGRAL ABUTMENT BRIDGES
… transport networks, where the bridge deck and abutments are rigidly connected (i.e., monolithic connection). The rigid connection between the main structural elements of the integral abutment bridges (IAB) (i.e., the deckabutments- footings) has increased the interaction of the bridge with the …
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Assessment of HEC-18 equations for NCHRP abutment scour based on Kansas field data
… titled "Estimation of Scour Depth at Bridge Abutments, NCHRP 24-20." The method outlined in this document was adopted by HEC-18 as an alternative method for use in the estimation of scour depths due to abutment scour. This new method requires field review. The purpose of this report is to …
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On the Performance of Super-Long Integral Abutment Bridges: Parametric Analyses and Design Optimization
The concept of "integral abutment bridge" has recently become a topic of remarka-ble interest among bridge engineers, not only for newly built bridges but also during refurbishment processes. The system constituted by the substructure and the superstructure can achieve a composite action responding …
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A Biomechanical Study of Gold and Nickel-Based Dental Bridge Systems Utilizing Distal Abutment Dental Implants.
It is estimated there are over thirty million edentulous people in the United States alone. In this population the use of conventional treatment modalities, i.e., full or partial removable dentures, has been demonstrated to result in: (1) loss of alveolar bone height with subsequent inability to …
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Thermal Response of Integral Abutment Bridges With Mse Walls: Numerical Analyses and a Practical Analysis Tool
The advantages of Integral Abutment Bridges (IABs) include reduced maintenance costs and increased useful life spans. However, comprehensive and practical analysis tools for design of IABs have not been developed to account for the impacts of thermal displacements on abutment and foundation …
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