00399175

Component

http://onlinepubs.trb.org...s/trr/1984/982/982-008.pdf

https://scholar.google.co...Shiu&publication_year=1984

Measurements from three instrumented bridges in different parts of the United States were used to assess seasonal and diurnal behavior of concrete box-girder bridges. Effective bridge temperatures were used to evaluate seasonal thermal changes in bridges. Effective bridge temperature is defined as the temperature that governs longitudinal bridge movements. The effective bridge temperatures followed the same seasonal fluctuation as monthly average air temperature at the bridge site. Measured temperature differentials from top to bottom slabs for the three box-girder bridges were between +20ousF and -10ousF (+11.1ousC and -5.6ousC) regardless of geographic location. Temperature differentials were calculated by subtracting temperatures of the bottom slab from those of the top slab. Diurnal behavior of one bridge was continuously monitored for 24 hours during each of the four seasons. Longitudinal strains and temperatures were used to evaluate effects of nonlinear temperature gradient on bridge behavior. Internal thermal stresses at the instrumented bridge sections are reported.

Publication of this paper sponsored by Committee on Concrete Bridges. 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

01419860

pp 50-56

1984

Transportation Research Record

0309037646

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Figures (14) ; Photos (3) ; References (10) ; Tables (1)

Box girders; Concrete bridges; Daily; Girder bridges; Monitoring; Seasons; Structural analysis; Structural mechanics; Temperature; Thermal stresses

Seasonal variations; Structural behavior

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

TRIS, TRB

Jan 31 1986 12:00AM

• EARTHQUAKE PRECURSERS AND POTENTIAL DAMAGE IN THE UNITED STATES (ABRIDGMENT)
• FOUNDATION DESIGN: WEST SEATTLE BRIDGE
• HORIZONTALLY CURVED I-GIRDER BRIDGE ANALYSIS: V-LOAD METHOD
• OVERVIEW OF THE PENNSYLVANIA STANDARD PLANS FOR LOW-COST BRIDGES
• PERFORMANCE OF SLIDING BRIDGE BEARINGS
• PRESTRESSED CONCRETE HIGHWAY BRIDGES IN THE FEDERAL REPUBLIC OF GERMANY--CONSTRUCTION METHODS AND EXPERIENCES
• PRESTRESSED STEEL BEAM-CONCRETE SLAB COMPOSITE BRIDGE UNITS FOR COUNTY ROAD USE
• TEMPERATURE PROBLEM IN A PRESTRESSED BOX-GIRDER BRIDGE
• TENSION ARCH STRUCTURE