Response Spectrum Method for integrated and differential spatial seismic ground motions

Nazarov, Yuri P.; Poznyak, E. V.

doi:10.1016/j.soildyn.2018.02.014

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…To test the method, we perform calculations of many types of structures, both very simple [4,5] and real complex models of structures under various types of earthquakes.…”

Section: Research and Testingmentioning

confidence: 99%

“…The data from seismic arrays can show significant spatial variability of the seismic ground motion within small sites [1,2]. The spatial variability can be considered in the earthquake-resistant design on the base of differential models of ground motion, with estimating seismic loads and obtaining seismic response by Response Spectrum Method (RSM) [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Response spectrum method for spatial seismic ground motion

Poznyak¹,

Chirkov²,

Bugaevsky³

et al. 2021

Vib. proced.

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For seismic analysis of wide structures (for example, airports, stadiums, bridges, etc.), it is important to consider the wave seismic motion of the ground with spatial variability. The differential seismic motion is described by the vector field of kinematic parameters at each point of the base. The differential model of seismic excitation is used for structures on a flexible foundation or discrete supports, if the short-length waves (compared to the size of the foundation) are dominated in seismic waves spectrum. Such excitation is accompanied by angular displacements due to uneven translational ground motions, and it is not yet possible to consider using standard seismic analysis. This paper presents a method of differential seismic analysis with the corresponding modification of the response spectrum (RSM) method. The proposed method requires three accelerograms at each reference point. These accelerograms can be obtained during detailed seismic zoning. To illustrate the method, a model of a stadium cover is considered, for which it is important to apply a spatial differential seismic excitation, and some properties of the excitation are described and analyzed.

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“…To test the method, we perform calculations of many types of structures, both very simple [4,5] and real complex models of structures under various types of earthquakes.…”

Section: Research and Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Response spectrum method for spatial seismic ground motion

Poznyak¹,

Chirkov²,

Bugaevsky³

et al. 2021

Vib. proced.

Self Cite

View full text Add to dashboard Cite

show abstract

“…It also means that ground features can absorb visible light, infrared, and some bands in microwave. It has the characteristics of reflecting certain wave bands [10][11]. The reflection spectrum refers to the rule that the spectral reflectance changes with the change of wavelength.…”

Section: Agricultural Disaster Monitoringmentioning

confidence: 99%

Remote Sensing Extraction of Agricultural Disaster Information Based on Temporal and Spatial Statistics of Vegetation Index

2021

AJAS

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Traditional methods of agricultural disaster monitoring not only lag information, but also cause inaccurate damage determination due to manual survey methods. Therefore, timely and accurate access to agricultural disaster information is of great significance for disaster relief, agricultural insurance claims, optimization of planting structure adjustment, and precision poverty alleviation. This paper proposes a remote sensing extraction method for agricultural disaster information based on the temporal and spatial statistical characteristics of vegetation index. This method can quickly and accurately extract agricultural disaster information. This method uses the two Meng cities in the Inner Mongolia Autonomous Region as the research area, extracts the agricultural disaster information of the region in 2019, and calculates the disaster area and level of the Meng city in the region. The long sequence of agricultural disaster information extraction avoids the problems of lagging and inaccurate information of traditional agricultural disaster monitoring methods. In the experiment, the MODIS reflectivity products from late June to late September were used to distinguish the geographical location and the type of cultivated land, and the information on agricultural disasters in the key growth period of the crop in 2019 in the study area was obtained. The total affected area reached about 4.3 million mu. The method of this paper is used to extract agricultural disaster information. The overall accuracy Pc is 0.97 and the Kappa coefficient is 0.59. Compared with the traditional method, the accuracy of the extraction results is improved by nearly 15%, which indicates that the agricultural disaster information based on the vegetation index space and time is proposed in this paper. The remote sensing extraction method is suitable for agricultural disaster monitoring with wide space and long time series.

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An extended multiple-support response spectrum method incorporating fluid-structure interaction for seismic analysis of deep-water bridges

2023

Earthq. Eng. Eng. Vib.

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Response Spectrum Method for integrated and differential spatial seismic ground motions

Cited by 6 publications

References 10 publications

Response spectrum method for spatial seismic ground motion

Response spectrum method for spatial seismic ground motion

Remote Sensing Extraction of Agricultural Disaster Information Based on Temporal and Spatial Statistics of Vegetation Index

An extended multiple-support response spectrum method incorporating fluid-structure interaction for seismic analysis of deep-water bridges

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