Piecewise exact solution of the seismic energy balance equation and its verification by shake table tests

Güllü, Ahmet; Yüksel, Ercan

doi:10.1007/s43452-022-00433-5

Cited by 4 publications

(4 citation statements)

References 33 publications

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“…1,32 Therefore, the seismic demand can be represented in terms of seismic energy. 33 Hence, a piecewise method 34 was utilized in this study to solve Equation (1) and determine the linear and nonlinear energy content/spectra of the selected records.…”

Section: Input Energymentioning

confidence: 99%

Optimal selection and scaling of ground motion records compatible with input energy and acceleration spectra

Hasanoğlu,

Güllü,

Dindar

et al. 2024

Earthq Engng Struct Dyn

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Nonlinear response history analysis is the primary tool for risk‐targeted design and seismic performance evaluation of structures. These analyses require the selection of a set of ground motions that satisfy predetermined conditions such as spectral acceleration. Numerous efforts have been made so far to obtain ground motion records which are expected to represent possible earthquakes. Even though spectral acceleration‐based ground motion scaling is a common procedure, recent studies showed that structural response can be better represented through the energy content of the records. To this end, this study aims to develop an energy and acceleration spectra‐compatible record selection and scaling methodology to achieve higher efficiency and lower bias in the predicted structural response. The efficiency of the proposed method is evaluated through the standard deviations of the computed story drifts of benchmark structures resulting from the records processed by either the proposed or commonly used methods. The results demonstrated that considering input energy together with spectral acceleration for the selection and scaling of the records can considerably reduce the bias in structural response, especially for structures located on stiff soils.

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Section: Input Energymentioning

confidence: 99%

Optimal selection and scaling of ground motion records compatible with input energy and acceleration spectra

Hasanoğlu,

Güllü,

Dindar

et al. 2024

Earthq Engng Struct Dyn

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“…In this study, the piece-wise exact solution of the energy balance equation for constant ductility is employed, (Güllü and Yüksel (2022)). The solution procedure considers a bi-linear behavior model since it is well-known that the seismic energy is independent of the hysteretic model type, (Dindar et al (2015)).…”

Section: Seismic Input and Hysteretic Energiesmentioning

confidence: 99%

“…Hereafter, the period increments were 0.1 sec between 0.1 and 1.0 sec, 0.2 sec between 1.0 and 2.0 sec, and 0.5 sec between 2.0 and 4.0 sec. The responses of SDoF systems with the given vibrational periods were computed under the effect of the selected 184 near-field pulse-like records by use of the piece-wise solution of energy balance equation (Güllü and Yüksel (2022)). The computed energy responses were correlated with the selected IM s.…”

Section: Empirical Correlationsmentioning

confidence: 99%

“…The rationale of this study is correlating mass normalized constant ductility input energy and hysteretic energy, not the equivalent parameters, with commonly used IM s. To this end, the constant ductility input and hysteretic energy spectra of 184 near-field earthquake records from 21 different earthquakes were constructed by using a piece-wise solution algorithm for the energy balance equation (Güllü and Yüksel (2022)). Then, the correlation of the spectral energies with spectrum-based, peak amplitude-based, and cumulativebased intensity measures were investigated.…”

Section: Introductionmentioning

confidence: 99%

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Empirical correlations of constant ductility seismic input and hysteretic energies with conventional intensity measures

Hasanoğlu

Güllü

Güllü³

2023

Preprint

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Ground motion intensity measures (IMs) possess a significant role in earthquake engineering, especially during ground motion selection for nonlinear response history analyses and dynamic shake table tests as well as for probabilistic seismic engineering. Conventional IMs are not capable of accounting for the duration-related cumulative plastic damage, the frequency content of the ground motions, and the hysteretic behavior of the structural members which can be considered inherently by seismic energy-based IMs. However, many efforts have been paid for conventional IMs to relate them to the structural response. To benefit from these efforts, an empirical correlation study between energy-based and conventional IMs is required. To this end, constant ductility seismic input energy and hysteretic energy imparted to diverse single-degree-of-freedom (SDoF) systems were calculated for near-field earthquake records. The empirical correlations of the energy-based IMs with conventional spectrum-based, peak amplitude-based and cumulative-based IMs have been investigated based on the response history analyses. Further, predictive models between energy parameters and spectral acceleration were suggested considering different constant ductility levels. Hence, ground motion characteristics reflected by the input and hysteretic energy can be explicitly considered in performance-based earthquake engineering applications.

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Empirical correlations of constant ductility seismic input and hysteretic energies with conventional intensity measures

Hasanoğlu

Güllü

2023

Bull Earthquake Eng

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Piecewise exact solution of the seismic energy balance equation and its verification by shake table tests

Cited by 4 publications

References 33 publications

Optimal selection and scaling of ground motion records compatible with input energy and acceleration spectra

Optimal selection and scaling of ground motion records compatible with input energy and acceleration spectra

Empirical correlations of constant ductility seismic input and hysteretic energies with conventional intensity measures

Empirical correlations of constant ductility seismic input and hysteretic energies with conventional intensity measures

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