Three-Dimensional Soil-Structure Interaction of Nuclear Structures during Earthquake Considering Ground Rotational Input

Hanging Cable as Rotational Vibration Absorber
Many basic textbooks present an analysis of free vibration of a uniform cable hanging in a gravitational field. An extension to illustrate the effects of a concentrated tip mass is given...

Tall Buildings under Five-Component Earthquakes
In design, earthquakes are often idealized as having a single horizontal component which can act in two orthogonal directions. The present note examines the influence of other components....

Fictitious Strains Due to Rigid Body Rotation
The behavior of structures that exhibit large displacements under loading must be predicted through a nonlinear analysis in which terms higher than first order are included in the strain-displacement...

Plastic Rotations in Continuous Encased Beams
Reported are test results of rotation capacities of 11 two-span continuous encased beams. Composite beams consisting of steel-joists of variable moments of inertia, encased in concrete,...

Nonconforming Finite Element Analysis of Shells
By selectively adding nonconforming displacement modes to the low order isoparametric elements, new highly improved shell elements have been established. To select the best set of nonconforming...

Dynamic Response of Cantilevers with Attached Masses
Using generalized functions, the frequency equation for free vibrations of a cantilever beam-column having rotational and translational springs at its support, and carrying concentrated...

Coupled Shear Wall Analysis by Lagrange Multipliers
A special finite element technique is described which permits interconnection of line elements in flexure and first-order plane stress elements. Continuity of displacements and rotations...

Discrete Model of Beams on Elastic Foundation
A discrete model is developed which consists of rigid bars connected by rotational springs and supported by lateral springs. End conditions of the model are formulated and equations of...

Vane Shear Strengths at Two High Rotation Rates

Analysis of Rectangular Plates by Stiffness Method
A procedure is derived for determining the stiffness coefficients at the midedges of a rectangular plate when the middle of any edge undergoes a unit displacement or a unit rotation. A...

New Procedure for Numerical Relative Orientation
A random rotation approach has been suggested herein to tackle the problems of relative and exterior orientations. This new method circumvents the problem posed with iterative solutions....

Yield Criterion for Reinforced Concrete Slabs
A yield criterion for reinforced concrete slabs is expressed considering the equality of the normal applied and ultimate resisting moments at the yield line. All orientations of the yield...

Stiffness Center Method
A approximate analysis of rigid frames using a new concept, called the stiffness center, is presented. It has been shown that when a skeletal elastic system is idealized as a configuration...

Effect of Curvature on Nonlinear Frame Analysis
A general curvature expression for beams and frames subjected to arbitrary rotations is developed and employed in the matrix displacement method of analysis. This formulation is compared...

Rotational Capacity of Prestressed Concrete Beams
Four two-span continuous beams loaded at their midspan by equal concentrated loads were tested to failure. The inelastic hinge rotation seems to be slightly reduced by the increase in...

Inelastic Analysis of Reinforced Concrete Frames
The imposed rotation method for the inelastic analysis of frames rests on the interpretation of the actual bending moment distribution as the superposition of linear elastic moment responses...

Inelastic Spatial Stability of Restrained Beam-Columns
A numerical method for computing the deflections and rotations up to the point of instability of elastically restrained inelastic beam columns is described. The cross section considered...

Centrifugal Method of Mixing Soil with Stabilizer
A new method of pulverizing and mixing soil with stabilizers is considered for the purpose of minimizing the energy required in these operations. The method consists of extruding soil...

Response of Torsionally Excited Foundations
Investigated herein are two aspects of the response of a rigid massless foundation of circular plane which is supported at the surface of a homogeneous elastic half space and is excited...

 

 

 

 

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