00756069

Component

https://doi.org/10.3141/1624-04

http://scholar.google.com...agel&publication_year=1998

Fifteen rocker bridge bearings were cyclically tested to determine their bearing response to simulated seismic longitudinal loads. The objective of the tests was to examine the load-deformation characteristics and energy dissipation capabilities of bearings that have been in service for many years. The results are to be used to determine if existing in-place bearings may be utilized in seismic retrofitting of earthquake-susceptible bridges. The bearings were cycled within working ranges in each direction in the as-received state. The desired friction force hysteretic loops were determined from the net horizontal force-deformation test results. The cycles were applied in a sinusoidal manner in deflection control with a 4-sec period to simulate dynamic demand on the bearing. An equivalent friction coefficient was calculated for each bearing. Four of the bearings were tested statically to failure to examine the limit state response. The ultimate limit tests produced horizontal load-deformation data. The horizontal force was applied slowly in deflection control while data were acquired until failure. The ultimate bearing tests showed that all four bearings had large deflection capacities before instability.

This paper appears in Transportation Research Record No. 1624, Structural Analysis and Design: Bridges, Culverts, and Pipes.

English

p. 28-35

1998

Transportation Research Record

0309064694

Figures (10) ; Photos (1) ; References (1) ; Tables (1)

Bridge bearings; Cyclic tests; Deformation; Dissipation; Earthquake engineering; Earthquake resistant design; Force; Limit state design; Loads; Retrofitting; Ultimate load design

Horizontal loads; Longitudinal forces

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

TRIS, TRB

Nov 2 1998 12:00AM

• ACCOUNTING FOR EFFECTS OF CORROSION SECTION LOSS IN STEEL BRIDGES
• BEHAVIOR OF HIGH-DENSITY POLYETHYLENE PIPE WITH SHALLOW COVER
• BEHAVIOR OF TENSION SPLICES FOR REINFORCING BARS EMBEDDED IN HIGH-STRENGTH CONCRETE
• BOUNDARY EFFECTS ON RESPONSE OF POLYETHYLENE PIPE UNDER SIMULATED LIVE LOAD
• ECONOMIC ANALYSIS OF BRIDGE REHABILITATION OPTIONS CONSIDERING LIFE-CYCLE COSTS
• EFFECT OF CORROSION ON CRACK DEVELOPMENT AND FATIGUE LIFE
• FATIGUE IMPACTS ON BRIDGE COST ALLOCATION
• FULL-SCALE TESTS OF A RAILWAY BRIDGE
• IMPACT OF 44 000-KG (97,000-LB) SIX-AXLE SEMITRAILER TRUCKS ON BRIDGES ON RURAL AND URBAN U.S. INTERSTATE SYSTEM
• IN-SERVICE PERFORMANCE OF INTEGRAL BRIDGES AND JOINTLESS DECKS
• INFLUENCE OF BRIDGE APPROACH, SURFACE CONDITION, AND VELOCITY ON IMPACT FACTORS FOR FATIGUE-PRONE DETAILS
• JAPANESE "MANUAL FOR THE AESTHETIC DESIGN OF BRIDGES"
• LABORATORY DETERMINATION OF SOIL STIFFNESS DATA FOR BURIED PLASTIC PIPES
• LABORATORY FACILITY FOR TESTING ROAD IRONWORK INSTALLATIONS
• LABORATORY TESTING OF LOW-VOLUME ROAD BRIDGE ALTERNATIVE
• LONG-SPAN REINFORCED STEEL BOX CULVERTS
• NONLINEAR FINITE ELEMENT ANALYSIS FOR THERMOPLASTIC PIPES
• OPTIMIZATION OF STRUCTURAL DESIGN FOR HIGH-PERFORMANCE CONCRETE BRIDGES
• PROFILES OF DESIGN DIMENSIONS AND FUNDAMENTAL NATURAL FREQUENCIES FOR STEEL INTERSTATE HIGHWAY BRIDGES IN SOUTHEASTERN MISSOURI
• PROTOTYPE TESTING OF INTELLIGENT STIFFENER FOR BRIDGES AT I-35 WALNUT CREEK BRIDGE
• SEISMIC RETROFIT OF 1958 CARQUINEZ BRIDGE
• SEISMIC RETROFIT OF SAN FRANCISCO-OAKLAND BAY BRIDGE WEST CROSSING
• SEISMIC RETROFIT OF VINCENT THOMAS SUSPENSION BRIDGE
• SEISMIC STRENGTHENING OF COLUMN-PIER-CAP CONNECTIONS
• STRUCTURAL PERFORMANCE OF BURIED PROFILE-WALL HIGH-DENSITY POLYETHYLENE PIPE AND INFLUENCE OF PIPE WALL GEOMETRY
• TESTING OF HIGH-PERFORMANCE CONCRETE SINGLE-SPAN BOX GIRDER
• THE GOLDEN PROPORTION AND AESTHETIC DESIGN OF LONG-SPAN BRIDGES