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Article type: Research Article
Authors: Vasconez, Rosaa | Kustau, Aliakseib | Najm, Husamb; *
Affiliations: [a] Department of Civil Engineering, California Polytechnic State University, Pomona, CA, USA | [b] Department of Civil and Environmental Engineering, Rutgers University, Piscataway, NJ, USA
Correspondence: [*] Corresponding author: Husam Najm, Professor, Department of Civil and Environmental Engineering, Rutgers, University, 500 Bartholomew Road, Piscataway, NJ 08854, USA. E-mail: [email protected].
Abstract: The use of integral abutments in bridges goes back many years to the late 1930’s in the United States. Over the years, integral bridges became more popular as more and more states built those bridges and more engineers became familiar with their design and construction. These bridges are being built in Europe since the 1980’s. An integral abutment bridge acts as a frame structure with a continuity connection between the superstructure and the substructure. The substructure is typically an integral cap supported on single row of piles that provides flexibility to accommodate thermal loads and displacements. The main advantage of integral abutment bridges is that they are built without expansion joints which eliminates maintenance costs and reduces construction costs. Because of the interaction between the soil and the integral abutment under the applied loads and the cyclic nature of thermal loads, the analysis and design of integral abutment bridges can be, in some cases, challenging especially when the designs falls outside the geometrical limits set by existing standards. This overview focus on field performance data reported in the literature and interpretation of this data. IT also highlights the needs for more test data during construction and for long term performance under cyclic thermal movements. Deck replacement requirements in integral abutments were investigated using analytical models and recommendations for deck replacement preparations are provided.
Keywords: Integral abutment, soil-structure Interaction, monolithic, stiffness
DOI: 10.3233/BRS-220196
Journal: Bridge Structures, vol. 18, no. 1-2, pp. 27-43, 2022
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