Curved Integral Abutment Bridge Design Guidelines
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2024-01-31
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Edition:Final Report (Feb. 2020 – Jan. 2023)
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Abstract:Straight integral abutment bridges have been used throughout the New England states to reduce bridge maintenance costs and extend the service life of structures. Extending integral abutment bridges to curved alignment applications offers bridge owners additional areas to reduce construction costs associated with the lengths of approaches and right-of-way acquisitions as compared to tangent alignments. The purpose of this research is to investigate the effects of various bridge parameters pertaining to the behavior of curved integral abutment bridges (CIAB’s). The results are to be used to make recommendations for a simplified design method for CIAB’s. The simplified design method is to be implemented in a design guideline to enhance the bridge design practice throughout the New England region. A finite element analysis parametric study was performed to investigate the behavior of CIAB’s. The results of this study have been used to develop the Curved Integral Abutment Bridge Design Guidelines to supplement the bridge design guides for the region’s state transportation agencies and are intended to aid in the design of CIAB’s that would be encountered under typical conditions in New England, including cold climate thermal ranges and low seismic hazards.
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