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Title:

MOMENT-REDUCING HINGE DETAILS FOR THE BASES OF BRIDGE COLUMNS

Accession Number:

00603586

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309050618

Abstract:

Bridge foundations in seismic regions are designed to withstand the plastic hinge moments that develop at the bases of the bridge columns. In columns that are oversized for architectural or other reasons, this approach results in excessively large foundations. Various hinge details have been proposed to reduce the plastic moments transferred to the foundation and thereby reduce the size and cost of the foundation. The results of an experimental investigation of the seismic performance of bridge columns with moment-reducing details are presented. Tests were conducted on reinforced concrete column specimens subjected to axial load and cycled inelastic lateral displacements. The main parameters investigated in the testing program were different moment-reducing hinge details, the column aspect ratio, the level of axial load, and low-cycle fatigue characteristics. Columns with the moment-reducing details exhibited stable hinging behavior, even when subjected to repeated cycles at large displacement levels. The hinging behavior was similar to that for a conventional column with the same hinge dimensions and reinforcement. Flexure dominated the behavior of all the columns in this study, including those with an aspect ratio of 1.25. The level of axial load had only a limited effect on the behavior of the columns, with the moment-reducing details due to the confinement provided around the hinge region by the outer architectural column.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1275, Bridge Research 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Title:

Bridge research

Monograph Accession #:

01411073

Authors:

Henley Jr, E H
McLean, David I
Henley Jr, Edward H

Pagination:

p. 1-11

Publication Date:

1990

Serial:

Transportation Research Record

Issue Number: 1275
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309050618

Features:

Figures (22) ; Photos (3) ; References (4) ; Tables (1)

Uncontrolled Terms:

Aspect ratio

Old TRIS Terms:

Subject Areas:

Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls

Files:

TRIS, TRB

Created Date:

Feb 28 1991 12:00AM

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