Torsional-Balanced Steel in Concrete Beams
Presently design of rectangular concrete beams under torsion is limited to underreinforced sections only. To ascertain the underreinforced character of a concrete beam it is necessary...

Motion of Suspension Bridge Subject to Wind Loads
Vertical and torsional motions of a suspension bridge due to wind loading are studied. Both, self-excited, due to bridge motion, and buffeting, independent of bridge motion, wind loads...

Torsion and Flexure of Closed Thin-Walled Beams
In Ref. 2, a method of determining the stress and deformation of curved thin-walled beams having general loading and geometry was presented. This method considered the effects of warping...

Stiffness Matrices for Beam Members Including Warping Torsion Effects
Recently several papers have appeared in which variation methods have been used to set up both elastic and geometric stiffness matrices for open sections for which both St. Venants. and...

Simplified Analysis of Wall-Frame Building Structures
This note deals with an immediate generalization of the computational scheme to be applied for the case of torsional flexure inherent in asymmetric building structures subjected to horizontal...

Torsion of Frame-Tube Structures
In an earlier paper, a method was presented for the simplified analysis of frame-tube structures under bending actions. By replacing the discrete structure by an equivalent orthotropic...

Dynamic Shear Moduli for Dry Sands
Using the Torsional Simple Shear Device, the writers investigated the relationship between the equivalent dynamic shear moduli, Geg...

Elastic-Plastic Torsion of Nonhomogeneous Bars
This paper considers the mathematical formulation for elastic-plastic torsion of uniform and nonuniform nonhomogeneous bars subjected to monotonically increasing angle of twist. Each material...

Torsional Response of Rigid Embedded Foundation
A series representation is obtained for the harmonic torsional response of a rigid massless semi-ellipsoidal foundation embedded in an elastic half space and subjected to the action of...

Open Steel Box Sections with Top Lateral Bracing
Top-braced open thin-walled steel box girders under combined bending and torsion were studied. Two model box girders were tested in the elastic range. Analytically, the top bracing of...

Out-of-Plane Vibration of Thick Circular Ring
Dynamic stiffness matrices are derived for the out-of-plane coupled twist-bending motion of a complete circular ring, and which take account of the effects of transverse shear and rotatory...

Elastoplastic Torsion of Anisotropic Bars
An elastoplastic analysis for the torsion of anisotropic bars has been presented on the basis of a hybrid model using the finite element method. The element formulation is based on modified...

Ultimate Torque of Reinforced Concrete Beams
An analysis for predicting the torsional capacity of reinforced concrete beams has been developed based on consideration of deformations and equilibrium at failure. Three main factors...

Analysis of Some Double Layer Grids
An approximate method of analysis based upon the replacement of planar trussed members by analogous prismatic I-beams in double layer diagonal grids is examined. The goemetrical properties...

Restrained Warping in Thin-Walled Open Sections
A method is derived whereby warping shear stresses due to restraints or the variation of torque along a bar can be computed using finite elements. For completeness, it is also indicated...

Torsion in Symmetrical Buildings

Prestressed Box Beams under Combined Loading
Prestressed concrete box beams are studied under combined loadings of torsion, bending, and shear. Thirty-seven eccentrically prestressed beams were tested—three under pure torsion, 10...

Diaphragms for Curved Box Beam Bridges
A finite difference procedure is used to determine the response of a single span curved single box beam bridge with any number of interior diaphragms. The bending and torsional distortions...

Torsional Response of High-Rise Buildings
Ambient and earthquake response records obtained in several southern California high-rise buildings are analyzed. Building translational and torsional natural periods are estimated and...

Elastic Behavior of Tapered Monosymmetric I-Beams
The simultaneous differential equations for bending out of the plane of symmetry and for torsion of tapered monosymmetric I-beams are derived by considering the flange displacements. It...

 

 

 

 

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