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Seismic Risk Analysis of LNG Storage Tanks
This paper presents an approach to the seismic safety review of existing LNG storage tanks. The approach considers the seismic hazards from ground motion, surface fault rupture, and soil...

Design of a Knowledge Based System to Convert Airframe Geometric Models to Structural Models
Airframe manufactures who use CAD tools to design airframes and finite element analysis software to analyze them, still generate the finite element models using semi-manual methods. Although...

KBES and Interactive Graphics
Knowledge Based Expert System (KBES) is at research and testing stage at present. Engineers have begun to accept Interactive graphics System (IGS) as a tool in decision making. This paper...

Manpower Planning for Construction Administration
Manpower planning is an important aspect of any organization, but is particularly difficult in an activity subject to as many variables as highway construction. This paper outlines a process...

In-House Training in the Corps of Engineers
The Corps of Engineers is very active in the training of its employees and the results of training are the growth and professionalism of the employees. Supervisors must always develop...

Stochastic Finite Element Methods in Dynamics
This paper develops a stochastic finite element solution method utilizing a Neumann expansion of the operator matrix involved and at the same time, devises an efficient Monte Carlo method...

Field Tests of Wind-Structure Interaction
The present study was initiated to investigate the possible causes for excessive lamp failure rates on High Mast illumination towers in the State of Minnesota. The study consisted of two...

Dynamic Tests of LNG Storage Tanks for Earthquake Analysis of Liquid-Tank-Pile-Soil Interaction
This paper presents a field test procedure for determining the dynamic properties of large liquid natural gas (LNG) storage tanks under operating conditions. Two methods of vibratory excitation...

Significance of Nonlinear Modeling of R/C Columns to Seismic Response
Columns in reinforced concrete (R/C) structures exhibit complex hysteretic behavior during earthquakes. This can significantly influence predictions of overall response and damage distribution....

Earthquake Analysis of Liquid Storage Tanks
In the design of modern liquid storage tanks, it is of technical importance to examine their safety against earthquake damage. The methodologies used in design do not account for the major...

Refinements in Pseudo-Dynamic Test Procedures
One of the major concerns in seismic testing is whether the loading conditions imposed on a structure adequately represent those that might occur during a major earthquake. Response simulation...

Response of the San Juan Bautista 156/101 Bridge to the 1979 Coyote Lake Earthquake
Strong-motion accelerograms are used to examine the response of a multiple-span highway bridge to earthquake loading. Estimates of modal frequencies and damping values for the first two...

Nonlinear Dynamic Response ofWindow Glass Plates Using Finite Difference Method
C. V. G. Vallabhan has established an efficient iterative procedure to solve the Von Karman nonlinear plate equations using finite difference method for a rectangular plate. Here the method...

System Identification Applied to Pseudo-Dynamic Test Data: A Treatment of Experimental Errors
A single-input single-output system identification technique, used to estimate the modal properties of a full-scale six-story steel structure tested within its elastic range by the pseudo-dynamic...

Green's Function Implementation for Pile Analysis
This paper describes the implementation of a new Green's function based on a layer stiffness approach in a boundary element analysis of harmonically loaded pile groups embedded...

Modified Dynamic Condensation Method
This paper presents a modification of the Dynamic Condensation Method for the reduction or condensation of problems in structural dynamics. The proposed modification substantially reduces...

Diffraction Forces on Axisymmetric Bodies
Use of a Green function satisfying the governing differential equation and all boundary conditions except those on the boundary of the structure yields an integral equation, when these...

Approximate Solutions for Layered Foundations
A simple approximation to the dynamic response of foundations resting on layered soil profiles is presented. The approximation is based on an equivalent radiation damping which is numerically...

Nonlinear Response Combination in Seismic Analysis
Simple, approximate methods are developed to evaluate the maxima of response measures which are nonlinear functions of modal responses to seismic input. Examples for such response quantities...

Dynamic Response Moments of Random Parametered Structures with Random Excitation
First and second order statistical response moments are formulated for linear multi-degree of freedom dynamical systems having both random load and random structural characteristics. A...

 

 

 

 

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