Damage Potential Prediction of Greek Earthquakes Based on Spectral Sustainability Measures Derived from 3-D Displacement Response Spectra: Part – I
نویسنده
چکیده
The aim of this work is the investigation of the correlation between seismic damage measures and the sustainability of response displacement peak, deduced from novel 3-D response spectra. These spectra are produced with relatively small additional computational cost compared to their 2-D counterparts and incorporate valuable additional information concerning the sustainability of conventional spectral values to the rest of major response cycles. The utilization of 3-D response spectra leads to the computation of handy sustainability indices, proposed herein, that reflect the sensitivity of standard response spectra values to (i) the number of significant response half-cycles (‘transversal’ sustainability index 1) and (ii) the elongation of fundamental elastic period due to inelastic response (‘horizontal’ sustainability index 2). Based on selected Greek ground motion records, a time domain inelastic dynamic analysis study was performed for elasto-plastic single degree of freedom (sdof) oscillators. The results reveal the strong correlation between the spectral sustainability indices and the damageability of each record and were utilized to produce empirical estimators as functions of the aforementioned sustainability indices, in order to serve as reliable predictors of standard damage indices. The applicability of the findings to a greater sample of ground motion records and more realistic structural systems (such as single and multi-storey plane RC frames) has been confirmed and will be presented in a forthcoming companion publication.
منابع مشابه
A WAVELET-BASED PROCEDURE FOR MINING OF PULSE-LIKE GROUND MOTIONS FEATURES ON RESPONSE SPECTRA
The main objective of this paper is to present a wavelet-based procedure to characterize principle features of a special class of motions called pulse-like ground motions. Initially, continues wavelet transform (CWT) which has been known as a powerful technique both in earthquake engineering and seismology field is applied easily in automated detecting of strong pulse of earthquakes. In this pr...
متن کاملSteel Buildings Damage Classification by damage spectrum and Decision Tree Algorithm
Results of damage prediction in buildings can be used as a useful tool for managing and decreasing seismic risk of earthquakes. In this study, damage spectrum and C4.5 decision tree algorithm were utilized for damage prediction in steel buildings during earthquakes. In order to prepare the damage spectrum, steel buildings were modeled as a single-degree-of-freedom (SDOF) system and time-history...
متن کاملEvaluation of seismic responses of earth dams in the steady-state seepage (a case study: Shamil Dam)
Considering the high seismic potential in most parts of Iran, the importance of studying the behavior of earth dams under earthquake loading, especially in the southern regions, is very important due to the number of these dams and seismicity of the Zagros mountain range. In recent years, many studies have been performed on the effects of earthquakes on earth dams, but these structures exhibit ...
متن کاملCommon Raman Spectral Markers among Different Tissues for Cancer Detection
Introduction Raman spectroscopy is a vibrational spectroscopic technique, based on inelastic scattering of monochromatic light. This technique can provide valuable information about biomolecular changes, associated with neoplastic transformation. The purpose of this study was to find Raman spectral markers for distinguishing normal samples from cancerous ones in different tissues. Materials and...
متن کاملSEISMIC ENERGY DEMANDS OF INELASTIC BUILDINGS DESIGNED WITH OPTIMUM DISPLACEMENT-BASED APPROACH
In present study, the effects of optimization on seismic energy spectra including input energy, damping energy and yielding hysteretic energy are parametrically discussed. To this end, 12 generic steel moment-resisting frames having fundamental periods ranging from 0.3 to 3s are optimized by using uniform damage and deformation approaches subjected to a series of 40 non-pule strong ground motio...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2014