Need for Diaphragms in Concrete Box Girders
The action of diaphragms in single-cell concrete box girders is covered with particular reference to torsional loading. A simple analysis of the distortion of boxes is presented in which...

Torsion, Bending, and Shear in Prestressed Concrete
An ultimate strength interaction criterion for web reinforced, prestressed concrete beams under torsion, bending moment and flexural shear is presented. Principal variables considered...

Analysis of Asymmetrical Coupled Shear Walls
A method of analysis is devised for asymmetrical coupled shear wall structures. The individual shear wall piers, one story in height, are considered to be single elements in a stiffness...

Lateral Buckling of Parabolic Arches
Lateral buckling loads are presented for parabolic arches loaded uniformly by means of either hangers or columns. Buckling loads for arches with hangers have been previously obtained by...

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....

Response to Triangular Prisms in Turbulent Wind
Aeroelastic responses of 1/400 scale model with five masses were measured in a boundary layer wind tunnel to simulate the responses of twin triangular buildings in the turbulent wind at...

Torsional Stiffness of Embedded Footings
Numerical values of torsional spring constants with corresponding stress and displacement distribution are obtained for circular footings for various embedment. The presence of rigid discs...

Torsional Vibrations of Circular Foundations
Vibrations of circular foundation about their axis of symmetry are investigated. The analytical solutions of forced torsional oscillations on an elastic homogeneous isotropic half space...

Kelvin's Solution of Torsion Problem
Kelvin and Tait have shown that plate-like bars of thin rectangular cross section resist an applied torque by shearing stresses in two distinct ways. One-half of the torque is carried...

Singular Integral Equation Solution for Torsion
For a boundary value problem in elasticity with an arbitrary shape, an integral equation solution is one of the methods for which a single digital computer program with input data defining...

Interaction with Box Girders
It is common practice to construct a pier-cap beam integrally with a box girder bridge. Any loading which causes flexure in the cap beam also causes twisting of the box girder. The torsion...

Design Criteria for Turbine-Generator Pedestals
American design practices and criteria for large turbine generator pedestals is reviewed. Parametric studies show that, irrespective of its rigidity, the mat should be included as part...

Matrix Force Analysis of Thin-Walled Structures
The Bernoulli's hypothesis of plane cross sections remaining perpendicular to the deformed center line does not adequately approximate the deformation due to the torsion of...

Torsionally Stiff Columns under Eccentric Loads
A computer program was developed to predict the strength of hollow rectangular tubular columns with ends pinned and free to rotate in any direction for various load eccentricities with...

Torsion Analysis of Heavy Box Beams in Structures
Heavier box sections with thicker walls without the need of longitudinal stiffeners are widely used to resist combined torsion and bending loads in machines such as earth-moving and mining...

Concrete Beams in Bending, Torsion and Shear
The results of tests on 18 rectangular reinforced concrete beams subjected to combined bending torsion and shear are reported. The principal variables were the ratio of twisting to bending...

What Do We Know about Torsion in Concrete Members?
Recent research on torsion in concrete members is reviewed and summarized. Different versions of the skewed bending concept are compared and the effect of web reinforcement and prestress...

Torsion, Shear, and Bending on Stirruped L-Beams
Test results on reinforced concrete L-beams with closed stirrups under combined torsion, shear, and flexure are reported. Emphasis is placed on beams having less longitudinal steel than...

Experimental Study of Flexural-Torsional Buckling
The results of an experimental study, 48 tests, of the flexural-torsional buckling behavior of two-span beams and rigid frames are presented and compared with the theoretically predicted...

Tapered Box Girders of Deformable Cross Section
A general theory of torsion of tapered box girders of deformable cross section, its experimental substantiation, studies of the ultimate strength of box girders, and the use of the theory...

 

 

 

 

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