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Evaluation of Aashto Seismic Design for Reinforced Concrete Bridge Columns.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Evaluation of Aashto Seismic Design for Reinforced Concrete Bridge Columns./
Author:	Grismer, Andrew LeRoy.
Description:	1 online resource (526 pages)
Notes:	Source: Masters Abstracts International, Volume: 85-11.
Contained By:	Masters Abstracts International85-11.
Subject:	Architectural engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9798382579818

Evaluation of Aashto Seismic Design for Reinforced Concrete Bridge Columns.
Grismer, Andrew LeRoy.

Evaluation of Aashto Seismic Design for Reinforced Concrete Bridge Columns. - 1 online resource (526 pages)

Source: Masters Abstracts International, Volume: 85-11.

Thesis (M.S.)--South Dakota State University, 2024.

Includes bibliographical references

Bridge failure can be catastrophic resulting in casualties and limiting the accessibility and emergency response efforts. Ensuring a high level of ductility for bridge columns through sufficient design methods and detailing is the most important aspect of the modern seismic codes. Reinforced concrete (RC) bridge columns are widely used in multi-span bridges located in seismic regions of the nation due to their controlled ductility and durability. The objective of this study was to systematically evaluate the AASHTO seismic design requirements for RC bridge columns and to comment whether current bridge code is sufficient and safe. An extensive literature review was performed to understand how the analytical plastic hinge equation adopted by AASHTO was developed and new information on the equation limitations was presented. To systematically evaluate the accuracy and safety of AASHTO design methods, a comprehensive database of RC bridge column test data was compiled and modeling methods to perform moment-curvature analyses and pushover analyses, both allowed in AASHTO, were discussed using two software packages, OpenSees and SAP2000. The results of 1,600 analyses performed on the test specimens of the database were presented comparing the calculated and measured responses for each column. Subsequently, the results are synthesized by comparing the key points of the force-displacement relationships individually and collectively. It was found that for the circular RC bridge columns, the moment-curvature and pushover analyses were generally reliable and conservative in predicting the ultimate displacement, idealized yield displacements, and idealized yield baseshear values. Conversely, for the rectangular RC bridge columns, it was found that the moment-curvature and pushover analyses were substantially unconservative in predicting the ultimate displacements. Immediate action is recommended for AASHTO to revise the design methods for the rectangular RC bridge columns to make these column types reliable and safe for seismic applications.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798382579818Subjects--Topical Terms:

1180400
Architectural engineering.
Subjects--Index Terms:

Bridge columnsIndex Terms--Genre/Form:

554714
Electronic books.

Evaluation of Aashto Seismic Design for Reinforced Concrete Bridge Columns.
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