Concrete L-Beams Subject to Combined Torsional Loads
The experimental results for 40 reinforced concrete L-beam sections subject to combined bending, torsion, and shear are presented. Theoretical methods are derived to predict the cracking...

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...

Torsional Analysis of Perforated Core Structure
A simple method for torsional analysis of perforated core wall structures considering shear deformation is presented. The governing differential equation is derived from compatibility...

Torsional Flutter of Rectangular Prisms
Prismatic bar models tested are of rectangular cross section and are provided with different side ratios (depth/height) of 1, 2, 4, and 5. The position of axis of rotation of the model,...

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...

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...

Theory for Concrete Beams in Torsion and Bending
This paper presents a theory for the behavior of prestressed and reinforced concrete beams of rectangular section subjected to combined bending and torsion. The theory will predict the...

Torsional Response of Piles
An analysis is described for the determination of the response of a single cylindrical pile subjected to torsion. The accuracy of the analysis is checked against existing solutions and...

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...

Torsion in Symmetrical Buildings

Structural Design of Angeles Tunnel Surge Chamber
An analysis is presented of the design of the Angeles Tunnel Surge Chamber. Included is an examination of available references concerning the stabilizing effect of internal fluid pressure...

Torsion of Cylinders with Multiple Reinforcement
An exact solution is presented for the Saint-Venant torsion of a circular cylinder reinforced by multiple rings of circular rods. The number of equally spaced rods in each ring is the...

Numerical Solution of Moderately Thick Plates
A new method for the numerical solution of Reissner-type plate equations is developed. By deriving for an arbitrary edge of a polygonal plate a set of edge functions, it is possible to...

Design of Reinforced Concrete Spandrel Beams
Torsional stiffness of a reinforced concrete spandrel beam is known to decrease drastically after cracking and to cause redistribution of moment between the spandrel beams and the floor...

Torsion of Nonhomogeneous Anisotropic Bars
This technical note presents the finite element solution for the St. Venant's torsion of nonhomogeneous and anisotropic sections. The mathematical formulation is based on...

Kazerne Viaduct Collapse
An investigation into the failure of an off-ramp structure is described. A straight post-tensioned portal frame with drop-in spans failed during an intermediate stage of construction due...

Torsional Analysis of Boxgirder Suspension Bridges
Theories are presented for the static torsional analysis of the single-span box-girder suspension bridge. The box-girder deck is chosen because of its current popularity and because of...

Torsional Strength of Prestressed Concrete Beams
Analyses are presented for predicting the cracking and ultimate strengths of prestressed concrete beams subjected to torsion. The experimental cracking strengths of 177 specimens are compared...

Irregular Supports and Skew Diaphragms of Box Girders
Both bending and torsion generally occur, which cannot be solved together. The approach is based independently as they are coupled on the exact solution of differential equations of bending...

Prestressed Beams in Torsion, Bending, and Shear
Reported are test results of 32 rectangular prestressed, with and without eccentricity, concrete beams under various combinations of torsion, bending, and shear. The general behavior,...

 

 

 

 

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