Inelastic Lateral Torsional Buckling of Beams
A numerical procedure is presented for predicting elastic and inelastic beam buckling loads. The procedure uses a finite difference solution to the differential equations defining lateral...

Wagner Hypothesis in Beam and Column Theory
A examination is made on the underlying assumptions on which the flexural-torsional theory of thin-walled members is based. One of them, the Wagner hypothesis, is found not to be needed...

Torsional Coupling and Earthquake Response of Simple Elastic and Inelastic Systems
The effects are analyzed of torsional coupling on the earthquake response of simple one-story structures in elastic and inelastic ranges of behavior. The structures considered are symmetrical...

Simple Model for Earthquake Response Studies of Torsionally Coupled Buildings
Simple models defined only in terms of overall system properties are developed to approximate the response of one-story buildings. A system with several resisting elements may be idealized...

Analysis of Shells with Meridional Ribs

Torsional Vibration Tests on Embedded Footings
Torsional vibrations are of common occurrence in foundations of structures subjected to eccentric loading in a horizontal plane. Foundations of radar and communication antennae and certain...

Torsional Buckling Study of Hartford Coliseum
A structural analysis for torsional buckling of four-angle cruciform sections is utilized to predict the failure mode of the space truss for the Hartford Coliseum and the results are compared...

Dowel Action in Concrete Beams Subject to Torsion
The test program included 14 beams, two of which were of plain concrete, six longitudinally reinforced with corner bars of varying diameters, and six with both longitudinal and transverse...

Ambient Vibration Survey of Offshore Platform
Natural frequencies from 0.65 Hz to 4.5 Hz and associated mode shape parameters for vibration modes of a 390-ft (119-m) tall steel platform were determined from measured ambient accelerations....

Finite Element Analysis of Box Girders
A numerical method for the analysis of elastic thin-walled box girders is presented. The method is based on the separation of variables suggested by Vlasov and on the finite element method....

Tall Building Response to Earthquake Excitations
Under external excitations, a multistory building structure responds in both translation and torsion. The two types of motion are normally coupled, except for the unusual case where the...

Torsion of Core Walls of Nonuniform Section
The finite difference method is used in the solution of torsional problems of tall core wall structures with nonuniform sections. The formulation is very flexible and versatile, and can...

Torsional Analysis of Cutout Beams
The torsional deflection analysis of uniform hollow beams having a uniform cutout and subjected to a quasi-statically moving point torque is presented. An inherent deflection discontinuity...

Stability of Flexibly Connected Plate Systems
Two or more plates connected along lines parallel to the direction of in-plane load reach a limiting state of stability that depends on the stiffness of the connection. Intermittent and...

Torsion of Reinforced Square Cylinder
A method is development for calculating the torsional shearing stresses in a square rod which is reinforced by any number of circular reinforcing bars. An example is the concrete cylinder...

Errors in Utilization of Cold-Formed Steel Members
Experience indicates that the detailed requirements of AISI specifications are often overlooked in choosing cold-formed steel members for the structural components of buildings. Examples...

Combined Torsion, Bending, and Shear on L-Beams
Tests are reported on 15 semicontinous L-beams with stirrups under concentrated loads creating torsion combined with flexure and shear. The main variables were the amount of stirrups,...

Torsional Rigidity of Partially Yielded I-Sections
Steel beam-columns of I-shaped cross section commonly collapse in a flexural-torsional mode. The St. Venant torsional rigidity is therefore one of the relevant section properties in analysis....

Torsional Effect in Soil-Structure Interaction
This note describes a simplified method to evaluate the dynamic response of a building, including the wave propagation effects of ground motion. This method is based on a computer code...

Postcracking Compliance Analysis of RC Beams
An analytical model for postcracking compliance of rectangular reinforced concrete beams under combined torsion, bending, and transverse shear is established using the skew bending theory....

 

 

 

 

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