Comparison of real and simulated records using ground motion intensity measures

Karimzadeh, Shaghayegh; Kadaş, Koray; Askan, Ayşegül; Yakut, Ahmet

doi:10.1016/j.soildyn.2021.106796

Cited by 14 publications

(6 citation statements)

References 34 publications

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“…Earthquakes are natural disaster events, and the selection of input seismic records to study earthquakes is an important issue [34,35]. Real seismic motion records are extremely important.…”

Section: Selection Of Seismic Wavesmentioning

confidence: 99%

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Wang,

Yang,

Teng

et al. 2024

Buildings

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There are multiple seismic fault zones near Xi’an in China, among which the Li Piedmont Fault has multiple slip surfaces. A 3D finite element dynamic Soil–Fault–Tunnel model was established based on the engineering background of the Xi’an Metro tunnel orthogonally crossing the Li Piedmont Fault. The input seismic loads used the Chi-Chi, El-Centro, and artificial seismic waves, and the latter was artificially synthesized based on seismic conditions and site conditions of actual engineering. The Chi-Chi seismic wave with larger PGV/PGA and wider acceleration-sensitive area is a near-field seismic wave, while the others are far-field seismic waves. The seismic loads were transformed into the equivalent nodal force on the boundary nodes of the model, and nonlinear dynamic calculation was carried out to obtain the longitudinal seismic response of the structure. The main results show that the fault amplifies the seismic response of the tunnel, and the tunnel at the position of the fault slip surfaces is more vulnerable to failure, especially near the slip surface between the hanging wall and the fault, where the maximum acceleration, soil pressure, and internal force of the tunnel structure occur. In addition, the seismic response of the tunnel and soil caused by near-field seismic motion is significantly stronger than that caused by far-field seismic motion.

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Section: Selection Of Seismic Wavesmentioning

confidence: 99%

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Wang,

Yang,

Teng

et al. 2024

Buildings

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“…Several researchers have tried to offer new alternative frameworks to overcome difficulties associated with the conventional nonlinear time history analyses [1][2][3]. One potential solution to address this problem is employing source-based or site-based ground motion simulation, which finds application in nonlinear time history analysis [4][5][6][7]. Additionally, researchers have examined the effectiveness of this method by comparing it with actual ground motion data.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Efficiency of Mother Wavelet Functions for Simulating Endurance Time Excitations

Mashayekhi,

Harati,

Mirfarhadi

et al. 2024

Scientia Iranica

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The Endurance Time (ET) method is employed as a dynamic time history technique to analyze structures under artificially intensified acceleration time histories, known as Endurance Time Excitation Functions (ETEFs). Prior studies have shown that discrete wavelet transform (DWT) is an effective approach for generating ETEFs by representing signals as transform coefficients determined through optimization procedures. However, the impact of the chosen mother wavelet function on simulated ETEF accuracy remains unexplored. This study introduces a methodology to investigate the influence of mother wavelet functions on simulated ETEFs. Specifically, 31 mother wavelet function candidates from four families (Daubechies, Coiflet, Symlet, and Bio-Orthogonal) are examined. Results reveal that the choice of the mother wavelet function can lead to approximately 15% variation in simulated ETEFs' accuracy. The Daubechies wavelet family stands out as the preferred choice, exhibiting a diminished impact compared to alternative families. Remarkably, this wavelet family is associated with an importance factor of 5.5%, significantly lower than the 13% observed for the other families. Within the Daubechies family, db12 demonstrates optimal efficiency in generating linear response-based ETEFs. The research highlights the superiority of the Daubechies wavelet family, offering valuable insights to enhance ETEF simulation accuracy and reliability for effective ET method implementation.

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“…Recent research endeavours have centred on the examination of simulation effectiveness utilising diverse methodologies across the world, covering a broad spectrum of engineering implementations. These include seismic assessment evaluations of distinct structures or investigations into seismic loss and risk assessments [1,2,3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Simulated Ground Motions for Seismic Assessment of a Steel Frame Structure Using Multi-Criteria Selection and Scaling Approach Based on Evolutionary Algorithms

Georgioudakis,

Karimzadeh,

Fragiadakis

et al. 2023

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Recently, simulated ground motion records have supplanted real records as a key alternative. Unlike real motions, simulations encompass various intensities, source-to-site distances, and site characteristics. However, determining whether they are appropriate for engineering applications takes time and effort. Another challenging topic is the proper selection and scaling of ground motion records to assess the seismic performance of structures. This study aims to investigate the difference between the real and simulated motions selected according to the code design spectra. Simulations are accomplished through the stochastic finite-fault method, considering the uncertainty of the rupture of the North Tabriz Fault Plane in northwestern Iran, one of the hazardous regions with a seismic gap. A real ground motion dataset with consistent seismological characteristics is compiled. The records are selected and scaled through a multicriteria approach using the evolutionary algorithm. In this approach, the mean spectrum and the (period-depended) dispersion fit best with the target spectrum and its dispersion. Variations in real and simulated record sets are assessed using several ground motion intensity metrics. This study also investigates the effectiveness of the simulated motions for seismic demand evaluation of a three-story steel moment frame. 3520COMPDYN 2023 9 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

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Comparison of real and simulated records using ground motion intensity measures

Cited by 14 publications

References 34 publications

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Evaluation of the Efficiency of Mother Wavelet Functions for Simulating Endurance Time Excitations

Evaluation of Simulated Ground Motions for Seismic Assessment of a Steel Frame Structure Using Multi-Criteria Selection and Scaling Approach Based on Evolutionary Algorithms

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