Application of Energy Balance Concept in Seismic Evaluation of Structures

Leelataviwat, Sutat; Saewon, Winai; Goel, Subhash C.

doi:10.1061/(asce)0733-9445(2009)135:2(113)

Cited by 105 publications

(77 citation statements)

References 6 publications

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“…Many research works in past decades also indicate that the feature of energy is a better index [2][3][4][5][6] as it captures the essence of behavior of systems during ground motions. In recent years, to consider the inelasticity of systems, a modified energy balance equation was established based on the elasto-plastic single-degree-of-freedom (SDOF) system [7]. Specifically, an energy factor considering the interaction of ground motion properties and systematic nonlinearity was introduced to consider the energy equilibrium.…”

Section: Introductionmentioning

confidence: 99%

“…The improved energy-balance concept and energy factor considering multiple yielding stages By associating an inelastic system with the corresponding elastic system, the energy-balance equation of the inelastic SDOF system [7,9] can be established with the monotonic pushover skeleton curve and given by…”

Section: Introductionmentioning

confidence: 99%

“…The energy factor essentially denotes the ratio of the energy absorbed by an inelastic system to that of the corresponding elastic system under monotonic loading. The cumulative effect is indirectly considered, and this equation has been applied in extensive research works [7][8][9][10][11][12][13][14], which is considered to be rational. Practically, systems may exhibit the feature of multiple yielding stages as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The energy factor of systems considering multiple yielding stages during ground motions

Chuan

2015

Soil Dynamics and Earthquake Engineering

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The energy factor of systems considering multiple yielding stages during ground motions

Chuan

2015

Soil Dynamics and Earthquake Engineering

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“…A more rational seismic design approach, which also overcomes this difficulty, is to express the dynamic input effect through energy response spectra. Interpreting the effect of earthquakes in terms of energy is gaining extensive attention [Housner, 1956;Berg, Tomaides, 1960;Kato, Akiyama, 1975;Housner, Jennings, 1977;Hall et al, 1984;Akiyama, 1985;Uang, Bertero, 1988 and1990;Kuwamura et al, 1994;Bruneau, Wang, 1996;Bertero et al, 1996;Yei, Otani, 1999;Chou et al, 2000;Chou, Uang, 2003;Adang 2007;Leelataviwat et al 2009;Jiao et al, 2011]. This approach features three major advantages: (i) the input effect in terms of energy and the structural resistance in terms of energy dissipation capacity are basically uncoupled, (ii) except in the short period range, the input energy, E I , introduced by a given ground motion in a structure is a stable quantity, governed primarily by the natural period T and the mass m, and scarcely by other structural properties such as resistance, damping and hysteretic behavior, and (iii) the consideration of the cumulative damage fits well with this formulation and can be directly addressed.…”

Section: Introductionmentioning

confidence: 99%

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

Almansa

Yazgan

Benavent‐Climent

2013

Bull Earthquake Eng

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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.

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“…Actually, having been considered in recent design guidelines, the displacement-based approach is more familiar (WHITTAKER et al, 1998;BOMMER and ELNASHAI, 1999;GUPTA and KRAWINKLER, 2000;MIRANDA, 2000MIRANDA, , 2001BORZI et al, 2001;MIRANDA and ASLANI, 2002;DECANINI et al, 2003;KRAWINKLER et al, 2003); on the contrary there is a considerably lesser amount of research on the advancement of an energy-based methodology (BERTERO and UANG, 1992;FAJFAR and VIDIC, 1994;TERAN-GILMORE, 1998;LEELATAVIWAT et al, 1999;CHAI and FAJFAR, 2000;BERTERO and BERTERO, 2002;AKBAS and SHEN, 2002;LEELATAVIWAT et al, 2009), that is mainly focused on satisfying the energy balance equation using a monotonically increasing deformation approach.…”

Section: Introductionmentioning

confidence: 99%

Correlations between Energy and Displacement Demands for Performance-Based Seismic Engineering

Mollaioli

Bruno

Decanini

et al. 2010

Pure Appl. Geophys.

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Artículo de publicación ISIThe development of a scientific framework for performance-based seismic engineering requires, among other steps, the evaluation of ground motion intensity measures at a site and the characterization of their relationship with suitable engineering demand parameters (EDPs) which describe the performance of a structure. In order to be able to predict the damage resulting from earthquake ground motions in a structural system, it is first necessary to properly identify ground motion parameters that are well correlated with structural response and, in turn, with damage. Since structural damage during an earthquake ground motion may be due to excessive deformation or to cumulative cyclic damage, reliable methods for estimating displacement demands on structures are needed. Even though the seismic performance is directly related to the global and local deformations of the structure, energy-based methodologies appear more helpful in concept, as they permit a rational assessment of the energy absorption and dissipation mechanisms that can be effectively accomplished to balance the energy imparted to the structure. Moreover, energy-based parameters are directly related to cycles of response of the structure and, therefore, they can implicitly capture the effect of ground motion duration, which is ignored by conventional spectral parameters. Therefore, the identification of reliable relationships between energy and displacement demands represents a fundamental issue in both the development of more reliable seismic code provisions and the evaluation of seismic vulnerability aimed at the upgrading of existing hazardous facilities. As these two aspects could become consistently integrated within a performance-based seismic design methodology, understanding how input and dissipated energy are correlated with displacement demands emerges as a decisive prerequisite. The aim of the present study is the establishment of functional relationships between input and dissipated energy (that can be considered as parameters representative of the amplitude, frequency content and duration of earthquake ground motions) and displacement-based response measures that are well correlated to structural and non-structural damage. For the purpose of quantifying the EDPs to be related to the energy measures, for comprehensive range of ground motion and structural characteristics, both simplified and more accurate numerical models will be used in this study for the estimation of local and global displacement and energy demands. Parametric linear and nonlinear time-history analyses will be performed on elastic and inelastic SDOF and MDOF systems, in order to assume information on the seismic response of a wide range of current structures. Hysteretic models typical of frame force/displacement behavior will be assumed for the local inelastic cyclic response of the systems. A wide range of vibration periods will be taken into account so as to define displacement, interstory drift and energy spectra for MDOF systems. Various scal...

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Application of Energy Balance Concept in Seismic Evaluation of Structures

Cited by 105 publications

References 6 publications

The energy factor of systems considering multiple yielding stages during ground motions

The energy factor of systems considering multiple yielding stages during ground motions

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

Correlations between Energy and Displacement Demands for Performance-Based Seismic Engineering

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