00637827

Component

http://onlinepubs.trb.org...trr/1993/1393/1393-012.pdf

https://scholar.google.co...hawy&publication_year=1993

Vibration and impact due to multiple vehicles moving across rough bridge decks are studied in seven steel multigirder bridges with different span lengths. The bridges are modeled as grillage beam systems. The vehicle is simulated as a nonlinear vehicle model with 12 degrees of freedom according to the HS20-44 truck design loading specified by AASHTO. Four classes of road surface roughness generated from power spectral density function for the approach roadways and bridge decks are used in the analysis. The results indicate that the impact of exterior girders of short-span bridges are highly sensitive to lateral loading position, vehicle weight, road roughness, and so forth. Maximum impact factors of girders were obtained for two trucks (side by side) through changing their transverse positions, with different speeds and road surface roughness. Results are useful for the bridge design and the further study of impact formula proposed by AASHTO.

This paper appears in Transportation Research Record No. 1393, Structures. 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

01403235

English

p. 96-103

1993

Transportation Research Record

0309054664

Figures (9) ; References (18) ; Tables (2)

Axle load force; Bridge design; Bridges; Lateral placement; Mathematical models; Metal bridges; Motion; Motor vehicles; Roughness; Speed; Steel bridges; Structural design; Traffic speed; Trucks; Vehicle weight; Vibration

Impact factor; Moving vehicles

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

TRIS, TRB, ATRI

Oct 15 1993 12:00AM

• BEARINGS IN STRUCTURAL SYSTEMS: ACTION AND REACTION
• BEHAVIOR OF PRESTRESSED AASHTO GIRDERS UNDER STATIC LOADING
• DECOMPOSED-COMPONENTS APPROACH TO SIGNAL-POLE BASE-PLATE DESIGN
• DESIGN ANOMALIES IN CONCRETE DECK-STEEL STRINGER BRIDGES
• ECONOMICAL STEEL BOX GIRDER BRIDGES
• EFFECT OF ALTERNATIVE TRUCK CONFIGURATIONS AND WEIGHTS ON THE FATIGUE LIFE OF BRIDGES
• EXPERIMENTAL PERFORMANCE AND MODELING STUDY OF A 30-YEAR-OLD BRIDGE WITH STEEL BEARINGS
• FATIGUE DESIGN OF WELDED ALUMINUM STRUCTURES
• FATIGUE LOAD SPECTRA FOR A STEEL GIRDER BRIDGE
• FREEZE-THAW STUDIES ON CONCRETE STRUCTURAL ELEMENTS
• IMPROVING THE QUALITY AND DURABILITY OF MODULAR BRIDGE EXPANSION JOINTS
• INTEGRAL BRIDGES: ATTRIBUTES AND LIMITATIONS
• NATURAL FREQUENCIES OF CONCRETE BRIDGES IN THE PACIFIC NORTHWEST
• OPTIMIZATION OF SEISMIC DESIGN OF SINGLE-COLUMN CIRCULAR REINFORCED CONCRETE BRIDGE PIERS
• RATIONAL WEATHER MODEL FOR HIGHWAY STRUCTURES
• SERVICE, FATIGUE, AND ULTIMATE LOAD EVALUATION OF A CONTINUOUS PRESTRESSED FLAT-SLAB BRIDGE SYSTEM
• STATIC LIVE LOAD TESTS ON A CABLE-STAYED BRIDGE
• STRUCTURAL IDENTIFICATION OF A STEEL STRINGER BRIDGE
• TESTING OF BRIDGE EXPANSION JOINTS BY LARGE-SCALE TESTING APPARATUS
• TESTS OF CONCRETE BRIDGE COLUMNS WITH INTERLOCKING SPIRAL REINFORCEMENT
• UPDATED ENVIRONMENTAL LIMITS FOR ALUMINIZED STEEL TYPE 2 PIPE APPLICATION