Design energy input spectra for moderate-to-high seismicity regions based on Colombian earthquakes

Benavent‐Climent, Amadeo; Almansa, Francisco López; Bravo-González, D.A.

doi:10.1016/j.soildyn.2010.04.022

Cited by 71 publications

(49 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Given the similarity between the relative velocity spectra and V D spectra [Housner, 1956;Akiyama, 1985] and the limited sensitivity of ratio V D / V E to the period [Decanini, Mollaioli 2001, Benavent et al 2010, the proposed spectra are expected to be basically shaped as the result of multiplying the design acceleration spectra according Eurocode 8 [EN-1998[EN- 2004 by the factor T / 2 . Therefore, these spectra have three branches, corresponding roughly to the short, medium and long period ranges.…”

Section: Linear Spectramentioning

confidence: 99%

“…corresponding to the 50% percentile. Since these lines are too abrupt, they can be smoothed by means of the following equation [Benavent et al 2010]:…”

Section: Nonlinear Spectramentioning

confidence: 99%

“…In this section, the design energy input spectra proposed in this study for high seismicity regions based on Turkish ground motions are compared with those proposed by Mollaioli [1998, 2001] and with those proposed based on registers from Colombia [Benavent et al 2010], Iran [Amiri el al. 2008] and Greece [Tselentis et al 2010].…”

Section: Comparison With Other Studiesmentioning

confidence: 99%

See 2 more Smart Citations

Design energy input spectra for high seismicity regions based on Turkish registers

Almansa

Yazgan

Benavent‐Climent

2013

Bull Earthquake Eng

Self Cite

View full text Add to dashboard Cite

SUMMARY:This work proposes design energy spectra in terms of an equivalent velocity, intended for regions with design peak acceleration 0.3 g or higher. These spectra were derived through linear and nonlinear dynamic analyses on a number of selected Turkish strong ground motion records. In the long and mid period ranges the analyses are linear, given the relative insensitivity of the spectra to structural parameters other than the fundamental period; conversely, in the short period range, the spectra are more sensitive to the structural parameters and, hence, nonlinear analyses are required. The selected records are classified in eight groups with respect to soil type (stiff or soft soil), the severity of the earthquake in terms of surface magnitude M s (M s  5.5 and M s > 5.5) and the relevance of the near-source effects (impulsive or vibratory). For each of these groups, median and characteristic spectra are proposed; such levels would respectively correspond to 50% and 95% percentiles. These spectra have an initial linear growing branch in the short period range, a horizontal branch in the mid period range and a descending branch in the long period range. Empirical criteria for estimating the hysteretic energy from the input energy are suggested. The proposed design spectra are compared with those obtained from other studies.

show abstract

Section: Linear Spectramentioning

confidence: 99%

“…corresponding to the 50% percentile. Since these lines are too abrupt, they can be smoothed by means of the following equation [Benavent et al 2010]:…”

Section: Nonlinear Spectramentioning

confidence: 99%

Section: Comparison With Other Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Design energy input spectra for high seismicity regions based on Turkish registers

Almansa

Yazgan

Benavent‐Climent

2013

Bull Earthquake Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Consequently, the energy balance equation of an SDOF system can be written as in the form of its well-known expression from dynamics of structures as given in Eq. (1) [2,4,5,13,15,21,25,26,32,37,40,41,46]. In the basic energy balance equation; m is the seismic mass of the structure, c is the damping coefficient, u is the relative displacement of the system, fs is the restoring force, ( ) is the horizontal ground acceleration, ( ) is the relative velocity and ( ) is the relative acceleration of the system.…”

Section: Seismic Energy Componentsmentioning

confidence: 99%

Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results

Uçar

Merter

2018

SDÜ Fen Bil Enst Der

View full text Add to dashboard Cite

Abstract:In energy-based seismic design approach, earthquake ground motion is considered as an energy input to structures. The earthquake input energy is the total of energy components such as kinetic energy, damping energy, elastic strain energy and hysteretic energy, which contributes the most to structural damage. In literature, there are many empirical formulas based on the hysteretic model, damping ratio and ductility in order to estimate hysteretic energy, whereas they do not directly consider the ground motion characteristics. This paper uses nonlinear time history (NLTH) analysis for energy calculations and presents the distribution of earthquake input energy and hysteretic energy of single-degree-offreedom (SDOF) systems over the ground motion duration. Seven real earthquakes recorded on the same soil profile and three different bilinear SDOF systems having constant ductility ratio and different natural periods are selected to perform NLTH analyses. As results of nonlinear dynamic analyses, input and hysteretic energies per unit masses are graphically obtained. The hysteretic energy to input energy ratio (EH/EI) is investigated, as well as the ratio of other energy components to energy input. EH/EI ratios of NLTH analysis are compared to the results of empirical approximations related EH/EI ratio and a reasonable agreement is observed. The average of EH/EI ratio is found to be between 0.468 and 0.488 meaning nearly half of the earthquake energy input is dissipated through the hysteretic behavior.

show abstract

“…The regularities of energy demand can be obtained by analyzing the relationship between energy and natural period which can be called energy spectra. In recent years, researches about energy spectra have been developed rapidly, such as earthquake input energy spectra [4], hysteretic energy spectra [5], equivalent velocity spectra, momentary absorbed energy spectra [6], momentary input energy spectra, inelastic cyclic demand spectra [7] etc. Some analyses [8] show that the earthquake input energy demand is stable than other forms of energy demand.…”

Section: Introductionmentioning

confidence: 99%

Improved Earthquake Input Energy Spectra for Single Directional Earthquake Excitation

Wang¹,

Zhou²,

Cui³

2014

Proceedings of the 2014 International Conference on Mechanics and Civil Engineering

View full text Add to dashboard Cite

Abstract. Cumulative energy response spectra can generally be used to estimate earthquake energy demand of structures. Some research findings show that the earthquake input energy demand is stable than other forms of energy demand, so it is important for scholars to research earthquake input energy demand and establish earthquake input energy spectra. For the purpose of obtaining the mean spectra, earthquake input energy is normalized as the ratio of earthquake input energy to square of peak ground acceleration. The energy balance equation is established based on the SDOF system, and the improved earthquake input energy spectral model is presented. The earthquake motion records of three kinds of soil sites are selected as the earthquake excitations of the SDOF system, and the mean spectra is established by nonlinear time history analysis. The influences of natural period, ductility factor and soil site on earthquake input energy are analyzed.

show abstract

Design energy input spectra for moderate-to-high seismicity regions based on Colombian earthquakes

Cited by 71 publications

References 29 publications

Design energy input spectra for high seismicity regions based on Turkish registers

Design energy input spectra for high seismicity regions based on Turkish registers

Hysteretic Energy Demand in SDOF Structures Subjected to an Earthquake Excitation: Analytical and Empirical Results

Improved Earthquake Input Energy Spectra for Single Directional Earthquake Excitation

Contact Info

Product

Resources

About