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Journal articles on the topic 'Seismic Input'

Author: Grafiati

Published: 1 April 2023

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1

Denney, Dennis. "Broadband Seismic: Ultimate Input for Quantitative Seismic Interpretation." Journal of Petroleum Technology 65, no. 03 (2013): 154–56. http://dx.doi.org/10.2118/0313-0154-jpt.

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2

Uzdin, A. M., G. V. Sorokina, and Kh Kh Kurbanov. "A simple seismic input model for estimating the seismic resistance of structures." Journal of Physics: Conference Series 2131, no. 3 (2021): 032010. http://dx.doi.org/10.1088/1742-6596/2131/3/032010.

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Abstract The paper formulates the principles for shaping the design input, in particularly that the design input is not required to be similarto the real input. It is suggested that the seismic input should be set as a sinusoidal segment. This requires that the sinusoid be hazardous to the structure and causes it to reach the same limit state as a real earthquake. The amplitude of the sine wave is set equal to the average value of the peak boosts. The frequency of the exposure is set as dangerous for the structure to be designed and the duration is set according to the frequency of the exposur

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3

Liu, Yue Wei, and Yang Zhou. "Seismic Rotations and Rotational Seismic Input for Building Design." Applied Mechanics and Materials 405-408 (September 2013): 1953–56. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.1953.

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The rotational seismic inputs for building design were discussed. The free ground rotations and the relation between free ground rotations and basement rotations were derived. The results show that the relation depends on the basement size, site and seismic frequency. For most building, the differences between the free ground rotations and the basement rotations are small. The suggestion is that for tall buildings the free ground rotations can be taken as the seismic input, but for low-rise building with large basement, the response spectra in short period region should be reduced.

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4

Xu, Yang, Jun Zhao, Xiao Yan Xu, and Dan Zhu. "Response Spectrum Analysis of a Large-Span Hangar Subjected to Multi-Dimensional Seismic Inputs." Advanced Materials Research 639-640 (January 2013): 906–10. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.906.

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The multi-dimensional seismic response of a single-span hangar was studied by response spectrum analysis method. The lateral displacements of the structure, forces of its supporting columns and its roof structure were calculated and compared with each other for cases of one-, two- and three-dimensional (1D, 2D and 3D) seismic inputs. The results show that, compared with the case of 1D earthquake input, the effects of horizontally 2D earthquake inputs on the internal forces and displacements of its supporting columns in the primary direction of input are obvious when it is along the symmetrical

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5

Uzdin, Alexander, and Sergei Prokopovich. "Some principles of generating seismic input for calculating structures." E3S Web of Conferences 157 (2020): 06021. http://dx.doi.org/10.1051/e3sconf/202015706021.

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In this paper different models of seismic input are analyzed. The most essential characteristics of seismic effects are peak ground acceleration, peak ground velocity, peak ground displacement, Arias intensity, cumulative absolute velocity, seismic energy density, harmonic coefficient κ, pseudo spectral kinematic characteristics, root-mean-square peak kinematic characteristics, plastic forces work and damage spectrum. The influence of seismic impulse on characteristics of seismic input is studied. A.A. Dolgaya’s and L.N. Dmitrovskaya’s models with seismic impulse are compared. L.N. Dmitrovskay

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6

Sari, Anggun Mayang, and Afnindar Fakhrurrozi. "SEISMIC HAZARD MICROZONATION BASED ON PROBABILITY SEISMIC HAZARD ANALYSIS IN BANDUNG BASIN." RISET Geologi dan Pertambangan 30, no. 2 (2020): 215. http://dx.doi.org/10.14203/risetgeotam2020.v30.1138.

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The geological and seismic-tectonic setting in the Bandung Basin area proliferates the seismicity risk. Thus, it is necessary to investigate the seismic hazards caused by the foremost seismic source that affects the ground motions in the bedrock. This research employed Probability Seismic Hazard Analysis (PSHA) method to determine the peak ground acceleration value. It considers the source of the earthquakes in the radius of 500 km with a return period of 2500 years. The analysis results showed that the Peak Ground Acceleration (PGA) in this region varies from 0.46 g to 0.70 g. It correlates w

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7

Panza, G. F., F. Vaccari, G. Costa, P. Suhadolc, and D. Fäh. "Seismic Input Modelling for Zoning and Microzoning." Earthquake Spectra 12, no. 3 (1996): 529–66. http://dx.doi.org/10.1193/1.1585896.

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The strong influence of lateral heterogeneities and of source properties on the spatial distribution of ground motion indicates that the traditional methods require an alternative when earthquake records are not available. The computation of broadband synthetic seismograms makes it possible, as required by a realistic modelling, to take source and propagation effects into account, fully utilizing the large amount of geological, geophysical and geotechnical data, already available. For recent earthquakes, where strong motion observations are available, it is possible to validate the modelling b

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8

Shargh, Ghasem Boshrouei, and Reza Barati. "Estimation of inelastic seismic input energy." Soil Dynamics and Earthquake Engineering 142 (March 2021): 106505. http://dx.doi.org/10.1016/j.soildyn.2020.106505.

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9

Eguchi, Ronald T. "Seismic hazard input for lifeline systems." Structural Safety 10, no. 1-3 (1991): 193–98. http://dx.doi.org/10.1016/0167-4730(91)90014-z.

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10

Langer, H. "Input parameters for estimating seismic loading." Natural Hazards 3, no. 2 (1990): 125–39. http://dx.doi.org/10.1007/bf00140427.

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11

Teng, Xiaofei, Ping Tan, Dewen Liu, et al. "Influence of different seismic motion input modes on the performance of isolated structures with different seismic measures." Open Physics 18, no. 1 (2020): 448–58. http://dx.doi.org/10.1515/phys-2020-0140.

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AbstractIn order to obtain the influence of different seismic motion input modes on the performance of isolated structures with different seismic measures, the two aspects from near-fault seismic motion velocity pulse input and different dimension seismic motion input modes are studied. The finite element model of traditional seismic and base isolation frame structure with different aspect ratios is established. The actual near-seismic strong earthquake record with forward directional effect and slipping speed pulse is used as the input method of structural seismic motion to carry out nonlinea

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12

Du, Min, Xiao Yun Guo, and Yan Zhao. "Ground Motion Parameters Influences on Input Seismic Energy." Applied Mechanics and Materials 204-208 (October 2012): 2520–23. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2520.

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Based on the energy analysis of a multi-degree-of-freedom (MDOF) system, a mode decomposition method for the input seismic energy is proposed, which substitutes a MDOF system with equivalent single-degree-of-freedom (SDOF) systems. The input seismic energy is obtained, using the actual earthquake data. The influence of ground motion parameters is analyzed. The results show that the seismic input energy increases proportionally with the square of ground motion acceleration peak. The bigger the predominant period is, the more the input seismic energy is.

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13

Xia, Chen, Chengzhi Qi, and Xiaozhao Li. "Viscoelastic Boundary Conditions for Multiple Excitation Sources in the Time Domain." Mathematical Problems in Engineering 2018 (October 10, 2018): 1–11. http://dx.doi.org/10.1155/2018/7982342.

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Transmitting boundaries are important for modeling the wave propagation in the finite element analysis of dynamic foundation problems. In this study, viscoelastic boundaries for multiple seismic waves or excitations sources were derived for two-dimensional and three-dimensional conditions in the time domain, which were proved to be solid by finite element models. Then, the method for equivalent forces’ input of seismic waves was also described when the proposed artificial boundaries were applied. Comparisons between numerical calculations and analytical results validate this seismic excitation

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14

Klügel, Jens-Uwe, Richard Attinger, and Shobha Rao. "Adjusting Fragility Analysis to Seismic Hazard Input." Journal of Disaster Research 5, no. 4 (2010): 395–406. http://dx.doi.org/10.20965/jdr.2010.p0395.

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This paper shows that the results of contemporary probabilistic seismic hazard analysis (PSHA), uniform hazard spectra, and hazard curves are inconsistent with the fragilitymethod used for seismic probabilistic risk assessment (PRA). The calculation used in PSHA is based on the evaluation of the probability of exceeding specified acceleration levels without considering the damaging effects of earthquakes. Empirical fragility of structures and components derived from field observations or qualification tests is conditioned to model large earthquakes, so fragility analysis must be adjusted to co

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15

Yan, Xian Li, Qing Ning Li, Fan Yang, Chang Gao, and Lei Wei. "Seismic Response Analysis of the Curved Bridges with Different Line Shapes." Applied Mechanics and Materials 204-208 (October 2012): 2501–4. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2501.

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Two curved bridges with typical line shapes: C shaped curved bridge and S shaped curved bridge were selected to study the influence of line shapes on the dynamic parameters of the curved bridge. Spatial finite element analysis models were established and the seismic responses of the two bridges in different earthquake input directions were studied by the elastic dynamic time history method. Results show that: except for the first natural period, the rest natural periods of the two bridges are basically the same; the earthquake resistant capability of the C shaped curved bridge is worse than th

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16

NAKAI, Kentaro, and Toshihiro NODA. "SEISMIC ASSESSMENT OF INPUT SEISMIC WAVES ON GROUND-CHIMNEY INTERACTION SYSTEM." Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 72, no. 2 (2016): I_409—I_418. http://dx.doi.org/10.2208/jscejam.72.i_409.

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17

Li, Yu, Yan Yang Che, and Sen Wang. "Improved Seismic Checking for Pier Based on Seismic Energy Response Method." Applied Mechanics and Materials 455 (November 2013): 224–27. http://dx.doi.org/10.4028/www.scientific.net/amm.455.224.

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Based on prophase research work, seismic checking for pier based on energy method is improved. The seismic input energy demand of pier is determined by using the seismic input energy response spectra and hysteretic energy dissipation spectra of sing-degree-of-freedom. Meanwhile, the Pushover Method is used to determine the hysteretic deformation capacity of pier. Then, based on the equilibrium principal between hysteretic deformation capacity and seismic input energy demand of pier, seismic checking for pier is carried on. Then, this improved seismic checking for pier based on energy method is

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18

Zhou, Yundong, Yongxin Wu, Ziheng Shangguan, and Zhanbin Wang. "Effects of Spatially Varying Seismic Ground Motions and Incident Angles on Behavior of Long Tunnels." Advances in Civil Engineering 2018 (June 11, 2018): 1–6. http://dx.doi.org/10.1155/2018/8195396.

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Seismic behavior of long circle tunnels is significantly influenced by the nature of input motion. This study, based on the 3D finite-element method (FEM), evaluates the effects of spatially varying seismic ground motions and uniform input seismic ground motions and their incident angles on the diameter strain rate and tensive/compressive principal stresses under different strata. It is found that (1) the spatially varying seismic ground motions induced larger diameter strain rate (radially deformation) than the uniform input seismic motion, (2) the spatially varying seismic ground motions had

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19

Nowak, Paul S., and John F. Hall. "Arch Dam Response to Nonuniform Seismic Input." Journal of Engineering Mechanics 116, no. 1 (1990): 125–39. http://dx.doi.org/10.1061/(asce)0733-9399(1990)116:1(125).

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20

Teruna, Daniel Rumbi. "The Use Of Seismic Energy And Damage Index For Assesment Seismic Performance Of Building Under Seismic Excitation." Talenta Conference Series: Energy and Engineering (EE) 1, no. 1 (2018): 145–53. http://dx.doi.org/10.32734/ee.v1i1.125.

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Seismic input energy is transmitted into building consists of the kinetic energy, elastic strain energy, damping energy, and hysteretic energy. The amount of the input energy induced by earthquake transmitted into a building depends on earthquake characteristics and building dynamic properties. In this context, the hysteretic energy directly associated with damage to structural members through a parameter which known as the damage index were introduced. For this purposes, influence of earthquake characteristic on energy spectra for SDOF system were described and presented. In addition, influen

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21

Zhang, Yun, Pin Tan, and Xiao Rong Zhou. "The Research of Input Ground Motion on Seismic Fragility Analysis of Bridges." Advanced Materials Research 490-495 (March 2012): 1826–30. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1826.

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Analyzed the importance of selecting reasonably ground motion input in seismic fragility analysis of the bridge. Based on the common methods of synthesis artificial seismic wave which used trigonometric series and according to the characters of Fourier series, extracted phase spectrum from practical seismic waves ,through modulating the Fourier amplitude spectrum, obtained the artificial seismic wave which fitted compatible with the design response spectrum. Similar to nature small earthquake records, it has the character of non-stationary on time-domain and frequency-domain. Synthesize a seri

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22

Pan, Hongke, and Xinxin Jiang. "On the Characteristics of Ground Motion and the Improvement of the Input Mode of Complex Layered Sites." Civil Engineering Journal 6, no. 5 (2020): 848–59. http://dx.doi.org/10.28991/cej-2020-03091512.

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It is a hot research topic to perform the dynamic interaction analysis between the engineering structure and the soil by using the time-domain method. This paper studies the seismic behaviour of the layered sites and the seismic response of the structures using the viscous-spring artificial boundary theory. The artificial boundary model of viscous-spring is initially based on homogeneous foundation. For the layered site (Foundation), the traditional homogeneous model or equivalent load input mode is not suitable, which may bring great error. By introducing the changes of coefficients and phase

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23

Li, Yu, Hua Bai, and Tao Wang. "Effect of Seismic Characteristics on Seismic Energy Response of Bridge." Advanced Materials Research 413 (December 2011): 46–50. http://dx.doi.org/10.4028/www.scientific.net/amr.413.46.

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The energy equations of MDOF bridges are established based on the energy equilibrium theory. With considering the seismic characteristics, the FEA model of one double-column pier of passenger dedicated line is established in order to research the seismic energy response and its distribution rules when MDOF bridges entry the nonlinear state. The study results are obtained as follow: Bridge subjected to minor ground motion is depended on damping energy dissipation to consume seismic input energy. On the contrary, a large number of inelastic deformation is generated when bridge is subjected to st

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24

Zhao, Tao, Fangyu Li, and Kurt J. Marfurt. "Seismic attribute selection for unsupervised seismic facies analysis using user-guided data-adaptive weights." GEOPHYSICS 83, no. 2 (2018): O31—O44. http://dx.doi.org/10.1190/geo2017-0192.1.

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With the rapid development in seismic attribute and interpretation techniques, interpreters can be overwhelmed by the number of attributes at their disposal. Pattern recognition-driven seismic facies analysis provides a means to identify subtle variations across multiple attributes that may only be partially defined on a single attribute. Typically, interpreters intuitively choose input attributes for multiattribute facies analysis based on their experience and the geologic target of interest. However, such an approach may overlook unsuspected or subtle features hidden in the data. We therefor

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25

Park, Ji-Hun, Dong-Hyun Shin, and Seong-Ha Jeon. "Seismic Fragility and Risk Assessment of a Nuclear Power Plant Containment Building for Seismic Input Based on the Conditional Spectrum." Applied Sciences 12, no. 10 (2022): 5176. http://dx.doi.org/10.3390/app12105176.

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A procedure for the seismic fragility assessment of nuclear power plants by applying ground motions compatible with the conditional probability distribution of a conditional spectrum (CS) is presented with a case study of a containment building. Three CSs were constructed using different control frequencies to investigate the influence of the control frequency. Horizontal component-to-component directional variability was introduced by randomly rotating the horizontal axes of the recorded ground motions. Nonlinear lumped mass stick models were constructed using variables distributed by Latin h

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26

Puspasari, Trevi Jayanti, and Sumirah Sumirah. "APLIKASI METODE PSEUDO 3D SEISMIK DI CEKUNGAN JAWA BARAT UTARA MENGGUNAKAN K.R. BARUNA JAYA II." Oseanika 1, no. 2 (2021): 1–12. http://dx.doi.org/10.29122/oseanika.v1i2.4562.

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ABSTRAK Tuntutan untuk mengikuti perkembangan kebutuhan industri migas menjadi motivasi dalam mengembangkan teknik penerapan dan aplikasi akuisisi seismik multichannel 2D. Perkembangan kebutuhan eksplorasi industri migas tidak diimbangi dengan anggaran peningkatan alat survei seismik milik negara termasuk yang terpasang di K.R. Baruna Jaya II – BPPT. Penerapan metode pseudo 3D pada disain survei dan pengolahan data dapat menjadi solusi efektif dan efisien dalam mengatasi persoalan tersebut. Metode Pseudo 3D merupakan suatu teknik akuisisi dan pengolahan data dengan menitik beratkan pada

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27

Vaseghi Amiri, J., G. Ghodrati Amiri, and B. Ganjavi. "Seismic vulnerability assessment of multi-degree-of-freedom systems based on total input energy and momentary input energy responses." Canadian Journal of Civil Engineering 35, no. 1 (2008): 41–56. http://dx.doi.org/10.1139/l07-085.

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In energy-based seismic evaluation and design, input energy as a seismic demand parameter and hysteretic energy are two important factors. Previous studies for seismic assessment and design based on energy approach have been generally limited to single-degree-of-freedom (SDOF) structures. The purpose of this paper is to find a suitable energy-based parameter for estimation of the damaging potential of ground motion in reinforced concrete frames of multi-degree-of-freedom (MDOF) systems. In this regard, 40 common reinforced concrete frames subjected to four different earthquakes have been analy

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28

Rabinowitz, Nitzan, and David M. Steinberg. "Seismic hazard sensitivity analysis: A multi-parameter approach." Bulletin of the Seismological Society of America 81, no. 3 (1991): 796–817. http://dx.doi.org/10.1785/bssa0810030796.

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Abstract We propose a novel multi-parameter approach for conducting seismic hazard sensitivity analysis. This approach allows one to assess the importance of each input parameter at a variety of settings of the other input parameters and thus provides a much richer picture than standard analyses, which assess each input parameter only at the default settings of the other parameters. We illustrate our method with a sensitivity analysis of seismic hazard for Jerusalem. In this example, we find several input parameters whose importance depends critically on the settings of other input parameters.

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29

Xu, Bin, Yang Zhou, Chenguang Zhou, Xianjing Kong, and Degao Zou. "Dynamic responses of concrete-faced rockfill dam due to different seismic motion input methods." International Journal of Distributed Sensor Networks 14, no. 10 (2018): 155014771880468. http://dx.doi.org/10.1177/1550147718804687.

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The concrete-faced rockfill dam valley foundation was considered as an open energy system and a reasonable non-uniform seismic motion input method was applied to the dynamic analysis of a concrete-faced rockfill dam based on the generalized plastic model. First, the corresponding program was validated by means of the scattering question of an idealized semicircle valley. Subsequently, the seismic elasto-plastic finite element analyses were performed to compare and investigate the performances of a concrete-faced rockfill dam under different seismic motion input methods. The results show that t

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30

Al-Hunaidi, M. O., Ikuo Towhata, and Kenji Ishihara. "Modification of Seismic Input for Fully Discretized Models." Soils and Foundations 30, no. 2 (1990): 114–18. http://dx.doi.org/10.3208/sandf1972.30.2_114.

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31

Viti, Stefania, Marco Tanganelli, Vittorio D’intinosante, and Massimo Baglione. "Effects of Soil Characterization on the Seismic Input." Journal of Earthquake Engineering 23, no. 3 (2017): 487–511. http://dx.doi.org/10.1080/13632469.2017.1326422.

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32

Jeong, C., and E. Esmaeilzadeh Seylabi. "Seismic Input Motion Identification in a Heterogeneous Halfspace." Journal of Engineering Mechanics 144, no. 8 (2018): 04018070. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001495.

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33

Kori, Jagadish G., and R. S. Jangid. "Semi-active MR dampers for seismic control of structures." Bulletin of the New Zealand Society for Earthquake Engineering 42, no. 3 (2009): 157–66. http://dx.doi.org/10.5459/bnzsee.42.3.157-166.

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Magnotorheological (MR) dampers have been demonstrated to be more effective in reducing the structural response due to earthquakes using only a small amount of external power. The performance of MR damper depends upon type of control law used and the damper force is directly depends on the input command voltage. The purpose of this study is to evaluate the effectiveness of input command voltage on MR damper system against recently proposed control laws under different earthquakes. The magnitude of control force increases with the increase in the input command voltage of MR damper, however for

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34

Witarsa, Jarnal, Dwi Pujiastuti, and Elistia Liza Namigo. "Karakterisasi Reservoar Hidrokarbon Menggunakan Atribut Energi dan Metode Seismic Coloured Inversion (SCI) Pada Lapangan Penobscot Kanada." Jurnal Fisika Unand 8, no. 2 (2019): 113–19. http://dx.doi.org/10.25077/jfu.8.2.113-119.2019.

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Telah dilakukan karakterisasi reservoar hidrokarbon pada Lapangan Penobscot Kanada menggunakan atribut energi dan metode Seismic Coloured Inversion (SCI) di sepanjang inline 1284 m. Penelitian ini menggunakan data seismik post stack sebagai data input dan data sumur sebagai data kontrol untuk menentukan nilai impedansi akustik (AI). Analisis sensitivitas log yang digunakan menunjukkan bahwa gamma ray log lebih sensitif dalam pemisahan lapisan sand dan shale. Analisis atribut energi dilakukan untuk meningkatkan resolusi vertikal dari penampang seismik untuk menentukan zone of interest. Analisis

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35

Zhao, Yingying, Weiming Gong, Xianzhang Ling, Peng Li, Ziyu Wang, and Hong Fan. "Model Test on the Vibration Reduction Characteristics of a Composite Foundation with Gravel Cushion under Different Seismic Wave Amplitudes." Shock and Vibration 2021 (February 6, 2021): 1–13. http://dx.doi.org/10.1155/2021/6696031.

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Gravel cushions have been introduced as a practical and efficient seismic isolation technology to ensure the safety of nuclear power plants. This study investigated the seismic isolation effect of a gravel cushion by conducting a series of shaking table tests on a model foundation with a cushion built of three different types of graded aggregates (single-sized (2–5 mm), two-sized (2–5 mm:5–10 mm = 3 : 1), and continuously graded) under input El Centro seismic waves with three different peak accelerations (0.1 g, 0.2 g, and 0.3 g). The testing results showed that the seismic isolation effect of

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36

Liu, Tong, Fuwang Xu, Qinghe Wang, and Huaiyu Xu. "Structural dynamic response of underground structure with vertical ground motion input." E3S Web of Conferences 293 (2021): 02016. http://dx.doi.org/10.1051/e3sconf/202129302016.

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Since many cases of structural damage in past earthquakes have been attributed to strong vertical ground motion, our understanding of vertical seismic load effects and their influence on seismic performance of subway station structure is limited. In this study, the Daikai subway station is taken as a typical example. A two-dimensional finite element model of both soil and structure was established using finite element software ABAQUS. Two input approaches of ground motion are considered, including the horizontal component alone and the vertical and horizontal motions simultaneously. Four group

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37

Lv, Liang, Bin Liang, and Wen Sheng Wang. "Research on Seismic Displacement Response of Cable Stayed Bridge without Back Stays." Advanced Materials Research 919-921 (April 2014): 1039–42. http://dx.doi.org/10.4028/www.scientific.net/amr.919-921.1039.

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Seismic displacement response of cable stayed bridge without back stays was studied in this paper. Based on the cable stayed bridge without back stays on Zhenshui Road in Xinmi City, finite element method (FEM) was applied to calculate and analyze natural vibration and peak displacement response of the structure. The results show that with regard to mid-span and consolidation of pier and main tower, uniaxial seismic wave input results in peak displacement response of corresponding direction is bigger than that of any other direction. Peak displacement response of the top of the main tower is b

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38

Cheng, Yin, Chao-Lie Ning, and Wenqi Du. "Spatial Cross-Correlation Models for Absolute and Relative Spectral Input Energy Parameters Based on Geostatistical Tools." Bulletin of the Seismological Society of America 110, no. 6 (2020): 2728–42. http://dx.doi.org/10.1785/0120200142.

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ABSTRACT In recent years, energy-based seismic design methodology has received increasing attention because it takes into account not only the force and displacement behavior of a structure but also the cumulative damage effect caused by seismic loading. Specifically, as a fundamental parameter, input energy parameters (both absolute and relative measures) are directly related to the cumulative damage potential; therefore, they are commonly used in energy-based seismic design and seismic risk assessment. This study thus proposes new spatial cross-correlation models for absolute and relative el

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39

Zhan, Yong Xiang, Hai Lin Yao, and Guan Lu Jiang. "Characteristics of Liquefaction Resistance for the Saturated Silty Soil Ground Treated by Compacted Gravel Pile Composite Foundation." Advanced Materials Research 446-449 (January 2012): 2573–76. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.2573.

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Based on Beijing-Shanghai high speed railway, the numerical simulation mainly researched on the seismic behavior for the saturated silty soil ground, which was treated by compacted gravel pile composite foundation. It has been analyzed that the region of liquefaction distribution and the transferring rule of excess pore water pressure under a series of input acceleration seismic loads in the treated and untreated foundation. The research results indicate that the untreated saturated silty soil ground is almost whole liquefaction when the amplitude of input acceleration is more than 0.15 g. Whi

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40

Nes, O. M., R. M. Holt, and E. Fjær. "The Reliability of Core Data as Input to Seismic Reservoir Monitoring Studies." SPE Reservoir Evaluation & Engineering 5, no. 01 (2002): 79–86. http://dx.doi.org/10.2118/76641-pa.

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Summary There is a potential for improving the reliability of standard core tests for seismic monitoring studies. A primary concern is the ability to quantify and correct for core-damage effects, which significantly enhance the stress dependency of wave velocities. This problem is most relevant for relatively low-strength rocks cored in high-stress environments. We have used synthetic sandstones formed under stress to perform a systematic study of stress-release- induced core-damage effects. The results show that careful laboratory procedures and modeling efforts may reduce core damage effects

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41

Bao, Xin, Jingbo Liu, Dongyang Wang, Shutao Li, Fei Wang, and Xiaofeng Wang. "Modification Research of the Internal Substructure Method for Seismic Wave Input in Deep Underground Structure-Soil Systems." Shock and Vibration 2019 (August 19, 2019): 1–13. http://dx.doi.org/10.1155/2019/5926410.

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A new internal substructure method for seismic wave input in soil-structure systems was recently proposed. This method simplifies the calculation of equivalent input seismic loads and avoids the participation of artificial boundaries in the process of seismic wave input. However, in previous research and applications, the internal substructures are usually intercepted down from the free surface, which forms large substructures and increases the computational effort for data management on the substructure nodes, especially for deep underground structures. In this study, the internal substructur

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Uzdin, A. M., T. V. Ivanova, G. V. Sorokina, Hong Lin, Kh Kh Kurbanov, and Sh Sh Nazarova. "Setting the level of design inputs for the seismic stability structures." Journal of Physics: Conference Series 2388, no. 1 (2022): 012080. http://dx.doi.org/10.1088/1742-6596/2388/1/012080.

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Abstract The paper deals with the task of setting the level of the design input for assessing the structure seismic resistance. An increase in the expected peak ground accelerations with the development of the earthquake engineering from 1 m/s2 to 7 m/s2 is noted. The absence of a correlation between the peak ground accelerations and the seismic action intensity, as well as the dependence of the peak ground accelerations on the action spectral composition, is explained. A method of determining the ground design acceleration using the standard seismic scale in force in Russia is shown. The illo

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Yang, T. Y., Dimitrios Konstantinidis, and James M. Kelly. "The Influence of Isolator Hysteresis on Equipment Performance in Seismic Isolated Buildings." Earthquake Spectra 26, no. 1 (2010): 275–93. http://dx.doi.org/10.1193/1.3276901.

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The seismic isolation code which must be used for all seismic isolated buildings in the United States is conservative in many of its provisions. While seismic isolation is flourishing in other countries, it is underused in the United States. For static analysis and for the selection of time histories, the spectrum is constant-velocity for periods of one second and longer, leading to large displacements for long period systems and forcing the designer to use added damping to reduce these displacements. The damping systems used are hysteretic with the characteristic that damping decreases with i

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Fujii, Kenji. "Bidirectional Seismic Energy Input to an Isotropic Nonlinear One-Mass Two-Degree-of-Freedom System." Buildings 11, no. 4 (2021): 143. http://dx.doi.org/10.3390/buildings11040143.

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The test results obtained for reinforced concrete columns by several studies have revealed that the peak displacement and cumulative hysteresis energy are important parameters for evaluating the damage of columns under horizontal bidirectional and unidirectional loading. Therefore, the seismic parameters related to the nonlinear peak displacement and cumulative hysteresis energy with regard to horizontal bidirectional seismic input should be investigated. In this study, the bidirectional seismic input to an isotropic nonlinear one-mass two-degree-of-freedom system was evaluated. First, a dimen

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Stamatovska, G. "Seismic safety of structures — case study: Probabilistic methodological approach to definition of seismic input." Acta Geodaetica et Geophysica Hungarica 43, no. 2-3 (2008): 337–48. http://dx.doi.org/10.1556/ageod.43.2008.2-3.18.

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Lin, Sen, Zhi Cheng Lu, Zhu Bing Zhu, Po Gao, and Sheng Li. "Study of Shaking Table Test on Seismic Performance of 750 kV Post Insulator." Advanced Materials Research 1065-1069 (December 2014): 1491–96. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.1491.

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The applicability of seismic waves for the seismic performance estimation of 750 kV post insulator has been investigated in full-scale shaking table test. the input seismic waves comprise El Centro seismic wave, Landers seismic wave, sine beat wave and artificial standard wave. The testing results indicate that, high dynamic responses of the equipment can be obtained under artificial standard wave condition. In addition, due to comprehensive enveloping ability and gentle spectral curve, artificial standard wave is ideal for the seismic performance evaluation of 750 kV post insulator in the tes

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Dai, Jian-Bo, Gui-Di Zhang, Cheng-Tao Hu, and Kai-Kai Cheng. "Study on Synthesis Method of Multipoint Seismic Waves for Buried Oil and Gas Pipeline in Shaking Table Tests." Shock and Vibration 2021 (July 31, 2021): 1–8. http://dx.doi.org/10.1155/2021/4624871.

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The buried oil and gas pipeline is a linear structure with infinite length. In the shaking table test of its seismic response, it is necessary to input the spatially related multipoint seismic wave considering the propagation characteristics of ground motion. The multipoint seismic excitation shaking table tests and loading scheme of buried oil and gas pipelines are designed and formulated. The synthesis method of spatial correlation multipoint seismic wave for the buried oil and gas pipeline test is proposed in this study. The values of relevant parameters are analyzed, and corresponding prog

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Hampshire De C. Santos, Sergio, Luca Zanaica, Carmen Bucur, and Silvio De Souza Lima. "Comparative Study of Codes for Seismic Design of Structures." Mathematical Modelling in Civil Engineering 9, no. 1 (2013): 1–12. http://dx.doi.org/10.2478/mmce-2013-0001.

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Abstract This paper presents a comparative evaluation among some international, European and American, seismic design standards. The study considers the criteria for the analysis of conventional (residential and commercial) buildings. The study is focused on some critical topics: definition of the recurrence periods for establishing the seismic input; definition of the seismic zonation and shape of the design response spectra; consideration of local soil conditions; definition of the seismic force-resisting systems and respective response modification coefficients; definition of the allowable

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Xu, Guo Lin, Ya Shuang Bai, and Wen Gang Chen. "The Influence of Seismic Motion Input Direction and Damping on the Dynamic Analysis of Mega Steel-Frame Structure." Advanced Materials Research 295-297 (July 2011): 236–39. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.236.

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A more accurate simulation of the response to the structure under seismic load action can be generated through taking bi-directional seismic motion input into consideration. The commonly used four calculation methods of bi-directional input are adopted in this paper to compare the different dynamic responses of mega steel-frame structure to seismic load action. The paper also provides a method for choosing Raleigh damping coefficients applicable to the dynamic analysis of mega steel-frame structure.

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Dmitrachkov, D. K., and M. I. Protasov. "Seismic inversion of depth migration results." Russian Journal of Geophysical Technologies, no. 4 (March 10, 2022): 4–15. http://dx.doi.org/10.18303/2619-1563-2021-4-4.

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Seismic inversion is used in practice as a tool for predicting reservoir properties. It allows one to extract a model with a high level of detail from seismic data, i.e., high-frequency component of the model. In this case, the input data are the time processing results, and the issues related to the low-frequency component of the model are not considered usually. In the presented work, a model-based seismic inversion algorithm is implemented. The input data for the inversion are the depth image results in true amplitudes and the depth migration velocity model. The possibilities of seismic inv

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