Hybrid Control of Seismic-Excited Bridge Structures Using Variable Dampers
A method of control for seismic-excited buildings or bridge structures using variable dampers is presented. The control method is based on the theory of variable structure system (VSS)...
Parametric Study of Cable-Stayed Bridges Response Due to Traffic-Induced Vibration
The dynamic response of long-span cable-stayed bridges due to moving traffic loads is investigated utilizing three-dimensional models. Modal analysis is conducted using the deformed dead-load...
Steel Alternates for the Hoover Dam Bridge
As input to the Environmental Impact Statement studies of appropriate long span bridges were performed for three alternate corridors across the Colorado River near Hoover Dam. Details...
Linear and Nonlinear Finite Element Analyses of RC Skewed Slab Bridges with Integral Wall Abutments
The design of rigid-frame skewed slab bridges is complicated by higher shears and moments near the obtuse corner (see Fig.1). While the finite element method can be used to compute these...
An Efficient Analysis of Framed-Tube Structures
An efficient model for analysis of framed-tube systems is proposed in this study. The proposed model can represent the interaction between plane frames consisting the tube system. Analysis...
Nonlinear Dynamic Analysis of Single Point Moored Buoy Under Wave and Current Loadings
In this study, a single point moored spherical buoy under wave and current loadings is analyzed in the time domain considering time memory effects. Geometric nonlinearity of the mooring...
Nonlinear Dynamic Analysis of Structural Frames Using Reduced Order Models
In order to provide more realistic and economical design of large structures it is necessary to perform analyses which take into account both material and geometric nonlinearities. Unfortunately,...
A Reduced Order Model for the Seismic Analysis of Building-Soil Systems
A finite element based, reduced order, numerical model has been developed for the nonlinear analysis of building-soil systems. The reduced order system model employs an equivalent continuum...
Three-Dimensional Analysis Model for Complete Masonry Buildings
For the predictive and diagnostic analysis of the complete nonlinear response of masonry buildings to seismic load input, a 3-D finite element model is under development at UCSD. The model,...
Interactive Buckling Analysis of Stiffened Shells Using Pregnant Sheel Elements
Two distinctive modes of failure dominate the failure of stiffened plates and shells, viz. the short-wave local mode and the long-wave overall mode. A new finite element technique which...
Buckling of Cylindrical Storage Tanks Due to Unsymmetric Lateral Wind Load
Non-linear finite element analysis is used to study the elastic stability of cylindrical storage tanks subjected to unsymmetrical loads. These cylindrical shells are assumed to be fixed...
Finite Element Analysis of a Highway Bridge Hinge
A highway bridge hinge is a very important element in bridge design. It releases thermal stresses that may be developed in the superstructure or the substructure of a bridge. A common...
Inelastic Behavior of Noncompact Steel Bridge Girders
This paper highlights the results from one of several finite element studies of the inelastic moment-rotation behavior of continuous-span non-compact bridge girders at interior-pier locations....
Fatigue Damage Accumulation Under Non-Gaussian Loads
The stochastic fatigue life prediction method, namely the Rayleigh approximation method, is almost exact when the loading is both normal (Gaussian) and narrowband. However, in many realistic...
A New Theory of Built-Up Columns
In laced, battened and other built up columns the shear stiffness of the web can have a significant effect on the overall buckling load. At the present time, such columns are analyzed...
Dynamic Response of Variable Height Retaining Walls
A full-scale dynamic test was conducted on a 140 ft long reinforced concrete retaining wall. The observed resonant configurations were similar to those of a cantilever plate and showed...
Ambient Vibration Survey: Sunshine Skyway Bridge
An ambient vibration survey of the Sunshine Skyway Bridge was performed. The goal of this survey was to provide field data on the dynamic characteristics of the structure to corroborate...
Numerical and Centrifuge Modeling of an Arch Dam on Jointed Rock
This paper addresses the stability of an arch dam built on highly fractured argillite. A large concrete thrust block combined with a wing dam forms the left dam abutment. The last FERC...
Three-Dimensional Stability Analysis of Carpenter Dam
This paper describes the three-dimensional stability analysis of Carpenter Dam. The presence of keyed construction joints between dam monoliths at Carpenter Dam can significantly affect...
Evaluation of Rehabilitation Needs for Hydraulic-Fill Dam
This paper describes the application of analytical methodologies developed for seismic stability analysis of dams in the western U.S. (particularly the Lower San Fernando Dam in Southern...
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