00627146

Component

http://onlinepubs.trb.org...trr/1992/1371/1371-012.pdf

https://scholar.google.co...rson&publication_year=1992

Static and dynamic tests were performed on a three-span reinforced concrete highway bridge in eastern Washington. The objective of these tests was to improve the ability of bridge engineers to assess the vulnerability of similar bridges to earthquakes. During a first series of tests, a University of Washington team measured the stiffness and strength of the bridge in its unaltered state. Large, slowly varying, cyclic loads were applied in the transverse direction of the bridge with hydraulic rams; small-displacement dynamic response was induced with an eccentric-mass shaker. The bridge was then isolated from the abutments and a second series of static tests was performed to measure the stiffness, strength, and toughness of the intermediate piers. Preliminary inspection of the measured data indicated that the tests provided good data with which to calibrate analytical models of bridge response. At a drift ratio (ratio of horizontal deflection to clear height of column) of less than 0.15%, the bridge resisted a transverse force equal to two-thirds the weight of the bridge. This large stiffness and strength were attributed to the contribution to resistance of the soil at the abutments and to the soil surrounding the columns at the intermediate piers. Tests of the piers demonstrated that, despite their deficiencies, the piers were able to resist forces up to approximately 40% of the weight of the bridge at a drift ratio of 3%.

This paper appears in Transportation Research Record No. 1371, Bridge, Culvert, and Tunnel Research. 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

01405120

English

p. 92-100

1992

Transportation Research Record

0309054141

Figures (9) ; Photos (5) ; References (7)

Bridge abutments; Bridge piers; Calibration; Deflection; Dynamic tests; Earthquake resistant structures; Highway bridges; Loads; Mathematical models; Reinforced concrete bridges; Repeated loads; Static tests; Stiffness; Strength of materials; Toughness

Analytical models; Lateral loads; Transverse loading

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

TRIS, TRB, ATRI

Mar 24 1993 12:00AM

• BEHAVIOR OF CONCRETE-FILLED STEEL GRID DECKS
• COMPARISON OF TREATMENT METHODS INVOLVING POLYMER IMPREGNATION FOR ABATING CORROSION IN OVERLAID BRIDGE DECKS
• DESIGN AND CONSTRUCTION OF FALSEWORK ON FEDERAL LANDS HIGHWAY PROJECTS
• FATIGUE LIFE STUDY FOR A RAILROAD BASCULE BRIDGE
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• GENERALIZED APPROACH TO DESIGN OF POSTTENSIONED CONCRETE ANCHORAGE ZONES
• INVESTIGATION OF A FOLDED-PLATE BRIDGE
• LESSONS LEARNED FROM DIAGNOSTIC LOAD TESTING OF 100-YEAR-OLD ELEVATED MASS TRANSIT STRUCTURES
• LONG-TERM SERVICEABILITY OF ISOTROPICALLY REINFORCED BRIDGE DECK SLABS
• NONDESTRUCTIVE AND DESTRUCTIVE TESTING OF DECOMMISSIONED REINFORCED CONCRETE SLAB HIGHWAY BRIDGE AND ASSOCIATED ANALYTICAL STUDIES
• PERFORMANCE EVALUATION OF INTEGRAL ABUTMENT BRIDGES
• PERMEABILITY EVALUATION OF CONCRETE BRIDGE STRUCTURES EXPOSED TO MARINE ENVIRONMENT IN FLORIDA (WITH DISCUSSION AND CLOSURE)
• PREFORMED MEMBRANE PERFORMANCE UNDER CONTROL CONDITIONS
• PROOF LOAD FORMULA FOR HIGHWAY BRIDGE RATING
• RETROFITTING OF REINFORCED CONCRETE BRIDGE COLUMNS
• SEISMIC RETROFITTING OF RECTANGULAR BRIDGE COLUMNS FOR SHEAR
• STRUCTURAL PERFORMANCE OF PERFORATED PVC PIPE
• TESTING AN INTEGRAL STEEL FRAME BRIDGE