00627136

Component

http://onlinepubs.trb.org...trr/1992/1371/1371-002.pdf

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

Closing a bridge for rehabilitation or emergency repairs always causes costly delays and inconveniences the traveling public. A bridge system that is economical, relatively easy and quick to construct, and capable of withstanding the live loads and volume of today's traffic would alleviate some of these problems. As a possible solution to the nation's need for an emergency or "by-pass" bridge, a new type of bridge--the shell bridge--has been developed. The feasibility and practicality of the shell bridge system have been verified through analytical and experimental investigations. The use of a folded-plate deck structure instead of a circular-shell deck structure in a shell bridge system was investigated. The obvious advantage of using a folded-plate cross section is that fabrication would be much simpler (i.e., flat form work instead of curved form work). The folded-plate bridge system was investigated analytically using the ANSYS general-purpose finite-element program. In the experimental portion of the investigation, a 1:24 Plexiglas scale model of a folded-plate bridge was fabricated and tested. The model was subjected to in-plane forces to simulate posttensioning forces and vertical forces to simulate live loading. In this preliminary investigation, the folded-plate deck structure, except for the higher transverse stresses caused by the lack of arch action, was determined to be an improvement over the circular-shell deck structure.

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. 8-16

1992

Transportation Research Record

0309054141

Figures (10) ; References (5)

Bridge decks; Bridges; Fabrication; Finite element method; Loads; Posttensioning; Scale models; Shells (Structural forms); Stresses; Temporary structures; Testing

Vertical loads

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

TRIS, TRB

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
• FEASIBILITY OF APPLYING CATHODIC PROTECTION TO UNDERGROUND CORRUGATED STEEL PIPE
• GENERALIZED APPROACH TO DESIGN OF POSTTENSIONED CONCRETE ANCHORAGE ZONES
• LATERAL-LOAD TESTS OF REINFORCED CONCRETE 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