This paper is aimed at serving the needs of structural engineering researchers who are seeking accelerograms that realistically represent time histories earthquake ground in support their own investigations. Every record identified with a specific scenario defined by magnitude–distance combination and site conditions; intensity presented records consistent ultimate limit state design requiremen...

This article presents the seismic assessment and retrofit design of an existing old building in Greece great regional importance. The Building is “Administration Kalamata” located city Kalamata, capital Messinia Prefecture. Building, largest city, a seven-floor reinforced concrete (r/c) structure with basement built 1974. procedure based on provisions EN 1998-3 code Greek for structural interve...

Earthquake time history records are required to perform dynamic nonlinear analyses. In order to provide a suitable set of such records, they are scaled to match a target spectrum as introduced in the well-known design codes. Corresponding scaling factors are taken similar in practice however, optimizing them reduces extra-ordinary economic charge for the seismic design. In the present work a ne...

This paper describes the physical relationships that exist between the Fourier transform and the response spectrum of a strong-motion accelerogram. By developing the new concept of the "Damped Fourier Spectrum" (D.F.S.), we show that the velocity and displacement of the damped oscillator can be represented by a linear combination of the real and imaginary parts of the D.F.S. and by the initial ...

The base level is among the effective parameters in determining the seismic force on a structure, if the equivalent-static method is used for analyzing a structure. It is obvious that the base level is located on foundation in buildings in which foundation is built in a single level and there is not any interaction between the structure's walls and the soil; however, in some buildings which hav...

Abstract This paper focuses on the probabilistic analysis of Intensity Measures ( IM s) and Engineering Demand Parameters EDP in context earthquake-induced ground motions. Several statistical properties, which are desirable s when they used to predict s, have been analysed. Specifically, efficiency, sufficiency steadfastness quantified for a set with respect two s: maximum inter-storey drift ra...

contrary to the long period ground motions that can be predicted and estimated, high frequency ground motions have random character and behave stochastically. stochastic modeling methods are usually used for the modeling of high frequency ground motions where there are not strong ground motion records. stochastic methods are of two kinds: in the first one, the seismic source is considered as a ...