Mathematical Expression of Design Hysteretic Energy Spectra Based on Chinese Soil Type

Ma, Cuiling; Gu, Qiang; Sun, Guohua

doi:10.1155/2019/3483516

Cited by 5 publications

(6 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The cumulative hysteretic energy demand of multi-degree-of-freedom (MDOF) system, as shown in Table 3, can be obtained according to the existing formulas in Literatures [7,11]. In order to obtain a better cumulative hysteretic energy demand of the structure, the sum of modal participating mass ratio should exceed 90%.…”

Section: Estimation Of Structural Hysteretic Energy Demandmentioning

confidence: 99%

“…By using finite element software ABAQUS for time history analysis, the hysteretic energy demand of the structure under different far-field vibrations is extracted and the average value is taken as the analysis value. Finally, it is compared with the estimated value obtained by equations in Literatures [7,11], as shown in Figs. 2-3.…”

Section: Comparison Of Hysteretic Energy Analysis Value With Estimate...mentioning

confidence: 99%

“…The estimation of energy demands of multi-degree-of-freedom architectures is a key step in the research of energy-based seismic design methods. In this paper, examples of the concentrically braced steel frames designed in accordance with Chinese current norms and standards was used to evaluate the rationality of the equivalent velocity spectra of cumulative hysteretic energy established in Literature [7] in accordance with Chinese site classification for hysteretic energy demand estimation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Credibility of Estimating the Hysteretic Energy Demands of Concentrically Braced Steel Frames

2023

Advances in Frontier Research on Engineering Structures

Self Cite

View full text Add to dashboard Cite

Earthquake happens frequently in China, and seismic design is of high importance for buildings. The energy-based seismic design method with clear conception has attracted attention of more and more researchers. One of the initial questions is how to determine the energy requirement. In this paper, the finite element software is used to analyze the time history of the concentrically braced steel frames designed according to the current codes and standards. The analysis shows that the cumulative demand obtained by time history analysis is similar to the estimated value. The hysteretic energy dissipation of the concentrically braced steel frames is of small top and big bottom along the height of the structure, and the energy dissipation of the floors below the height of H/3 (H is the height of the structure) is larger. Under rare earthquakes, the yield mode of structures designed according to the elastic design method of small earthquakes is uncontrollable, so it is necessary to study the design method based on energy behavior.

show abstract

Section: Estimation Of Structural Hysteretic Energy Demandmentioning

confidence: 99%

Section: Comparison Of Hysteretic Energy Analysis Value With Estimate...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Credibility of Estimating the Hysteretic Energy Demands of Concentrically Braced Steel Frames

2023

Advances in Frontier Research on Engineering Structures

Self Cite

View full text Add to dashboard Cite

show abstract

“…where m denotes the mass. e equivalent velocity spectrum meeting the Chinese site classification was developed by Ma et al [25]. Figure 1 shows the fitted spectral smooth curves.…”

Section: Hysteretic Energy Spectra and Accumulatedmentioning

confidence: 99%

Energy‐Based Seismic Design Method for EBFs Based on Hysteretic Energy Spectra and Accumulated Ductility Ratio Spectra

2019

Advances in Civil Engineering

Self Cite

View full text Add to dashboard Cite

In the case of far field earthquakes, structural failure often results from accumulated damage caused by cyclic effects and gradual accumulation of energy. This paper proposes an energy-based seismic design method for steel eccentrically braced frames (EBFs) with two shear links at every story according to the energy balance concept. The proposed method is theoretically supported by hysteretic energy spectra and accumulated ductility ratio spectra according to the Chinese soil classification. Furthermore, the method can be used to clarify the relationship between cumulative hysteretic energy and one-way pushover energy. For developing the method, it is assumed that all the hysteretic energy is dissipated by the shear links, column bases, and beam ends of the frames at both sides. Therefore, the parts outside the links, including beam segments, braces, and columns, are specially designed to perform elastically during an earthquake. Furthermore, a V-scheme steel EBF with ten stories and three spans is designed. The seismic performances of the designed structure, such as story drift and energy dissipation, are evaluated by nonlinear static analysis and time-history analysis. Finally, the reliability and accuracy of the proposed seismic design method are validated.

show abstract

“…Ma et. al (Ma, Gu, and Sun 2019) researched energy-based seismic design based on source to site distance and site classification. According to the site classifications of Chinese seismic code, earthquake ground motion records were selected and the equivalent velocity spectra of hysteretic energy demand generated by the energy-balance equation.…”

Section: Introductionmentioning

confidence: 99%

Attenuation of Energy-based Demand Parameters

Sarı

Manuel

2021

Preprint

View full text Add to dashboard Cite

The intensity of ground shaking and the demand on structures during earthquakes have been generally characterized using parameters such as peak ground acceleration as well as strength-based parameters such as response spectrum ordinates (e.g., spectral acceleration) that represent the maximum amplitude of shaking for structures with specified natural period and damping values. It has long been recognized that to assess the demands on structures during earthquakes, one might employ an energy-based approach (as an alternative to the more common strength-based one), especially when there is an interest in assessing damage potential of ground motions. An energy spectrum, obtained with the same level of effort required to construct a conventional response spectrum, is a convenient single-parameter description of both amplitude and duration of ground motion and can serve as a useful means by which to describe the performance of structures with different natural periods and damping ratios.In this study, attenuation models for Northwestern Turkey are developed for two parameters (defined herein) that are related to input energy and absorbed energy. The empirical models developed take advantage of the recent increase in the database on strong motion data for Northwestern Turkey. A total of 195 recordings from 17 recent seismic events are included in this database. The ground-motion prediction equations developed are for the geometric mean of the two horizontal components of the 5-percent damped energy parameters (elastic and inelastic input energy-equivalent acceleration, Ai, and absorbed energy-equivalent velocity, Aa) at various periods. Predictions of the energy-based parameters from the proposed attenuation model are compared with (strength-based) spectral acceleration levels predicted by Özbey et al [Soil Dyn. & Earthq. Eng., 24 (2004), pp. 115-125]. It is found that the energy demand parameters were generally greater with elastic Ai demands highest. In addition, the predicted energy-based parameter levels are compared with available Western U.S. attenuation model predictions for the same energy-based parameters. Western U.S. models predict similar energy demands to those with the proposed model. Finally, amplification factors for the energy-based parameters are proposed as a function of site class; these factors can be thought of as analogous to amplification factors for spectral acceleration as given in the NEHRP Seismic Provisions. The patterns related to the amplification are similar as with spectral acceleration in NEHRP (2001). A comparison of soil amplification effects for strength- and energy-based parameters is also discussed.

show abstract

Mathematical Expression of Design Hysteretic Energy Spectra Based on Chinese Soil Type

Cited by 5 publications

References 18 publications

Credibility of Estimating the Hysteretic Energy Demands of Concentrically Braced Steel Frames

Credibility of Estimating the Hysteretic Energy Demands of Concentrically Braced Steel Frames

Energy‐Based Seismic Design Method for EBFs Based on Hysteretic Energy Spectra and Accumulated Ductility Ratio Spectra

Attenuation of Energy-based Demand Parameters

Contact Info

Product

Resources

About