Rapid Design of Orthotropic Floor Beams
An equation is developed for determining the maximum deflection, shear force, and bending moment in orthotropic steel deck bridge transverse floor beams. The slope-deflection equation...

Analysis of Thin-Steel Hyperbolic Paraboloid Shells
Finite element analyses of orthotropic hypar structures, using flat and curved elements, are compared with experimental results. The flat element approach tends to predict the deflections...

Airfoil and Bridge Deck Flutter Derivatives
The writers compare the flutter phenomena of the suspension bridge and the airfoil and employ a free-oscillation experimental method to measure model bridge flutter coefficients analogous...

Cost Optimization of Structural Roof System
The development of a procedure for the optimum design of a roof system to yield minimum cost is reported herein. The roof system is composed of parallel chord, steel trusses, with purlins...

Ambient Vibration of Two Suspension Bridges
The dynamic characteristics (i.e., normal mode natural frequencies, damping, and shapes) of two suspension bridges are estimated from experimentally measured ambient motion time histories....

Portage Mountain Intake Structure and Facilities
Portage Mountain Project, 600-ft high earth dam creates a reservoir of 57,000,000 acre-ft. The free standing water intake towers rise 115 ft above the rocks to support the bridge. For...

Bridge Deck Protection and Resurfacing
As a result of the Ohio River Bridge failure at Point Pleasant, West Virginia in 1967, periodic inspections of bridges are requested by the U.S. Bureau of Public Roads. The importance...

Analysis of Curved Girder Bridges
The Fourier Series slope-deflection method has been developed as a means of analyzing curved orthotropic deck bridge systems. Bridge deflections and internal forces in the curved girders...

Bridge Deck Deterioration and Crack Control
An evaluation is made of bridge deck survey findings and laboratory research data in order to characterize the most common types of bridge deck deterioration. Possible causes are identified...

Horizontal Thermal Movement of Curved Bridge Decks
The displacements of the boundaries of skewed and curved bridges resulting from temperature change of the bridge deck depend on the lateral support system of the superstructure. To avoid...

Composite Beam Incorporating Cellular Steel Decking
Results of a test on a composite steel and concrete beam incorporating a cellular steel deck are reported. Good agreement between measured and computed values of strain and deflection...

Analysis of Orthotropic Steel Plate Bridge Decks
A computer-oriented method for the analysis of orthotropic bridge decks is presented. The structure is idealized as a rectangular orthotropic plate which is continuous over simply supported,...

Columns Braced by Girts and a Diaphragm
Light gage steel panels often are used as wall cladding or roof decking of steel framed structures. These interconnected panels act as diaphragms which can resist shear and, therefore,...

Effective Width of Steel Deck-Plates in Bridges
The problem of the effective width, which is encountered in the design of steel plate deck bridges, is presented and examined theoretically. The differential equation of the correlated...

Aerodynamic Investigations of Box Girder Bridges
Box girder bridge decks have recently come into wider use. This is of particular interest in the case of suspension bridges where deck form strongly affects the possible response to wind...

Field Tests of Aluminum Orthotropic Bridge Deck
Field tests of a lightweight aluminum bridge deck of orthotopic construction provided stresses and deflections in the deck plate and ribs caused by a truck loaded to 20 tons. A typical...

Aerodynamic Instability of Suspension Bridges
A general linearized analytical theory for the flutter of suspension bridge decks under uniform steady wind is presented. In this theory, the essential aerodynamic forces are presumed...

Elasto-Plastic Analysis of Reinforced Plates
An extension of the available theories for the analysis of rectangular two-way reinforced metal deck plates into the large deflection, elasto-plastic stress region is described. A procedure...

Behavior Under Load of Composite Box-Girder Bridges
Quarter and fifth scale models were tested of 80- and 100-ft span composite box-girder bridges made of trapezoidal shaped steel girders joined by stud shear connectors to a reinforced...

Shear Flexibility and Strength of Corrugated Decks
A brief review is made of the mainly experimental work which has been carried out on shear diaphragms. To make full use of the shear properties of steel decks, it is desirable to be able...

 

 

 

 

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