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Assessment of Near-Fault Ground Motion Effects on the Fragility Curves of Tall Steel Moment Resisting Frames [PDF]
Civil Engineering Infrastructures Journal, 2020 Nowadays it is common to use the fragility curves in probabilistic methods to determine the collapse probability resulting from an earthquake. The uncertainties exist in intensity and frequency content of the earthquake records are considered as the most
Seyed Ahmad Mobinipour +1 more
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Study on seismic isolation system for long-period ground motion
Transactions of the JSME (in Japanese), 2015 In this paper, the authors have developed a new type of horizontal seismic isolation system which has large effect of vibration isolation for ordinary earthquakes and suppresses the resonance of the isolation system due to long-period ground motions. This seismic isolation system is composed of coil spring and two slide rails.
Akira ISOBE, Hiroyuki KIMURA
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REDUCTION FACTOR OF TOTAL INPUT ENERGY FOR LONG-PERIOD GROUND MOTIONS
AIJ Journal of Technology and Design, 2019 Miei ITO +4 more
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Predominant period of the long-period ground motions in the Osaka basin
BUTSURI-TANSA(Geophysical Exploration), 2006 大阪平野内で励起されるやや長周期地震動の平均的な卓越周期を求めるため，関西地震観測研究協議会（関震協）の強震観測点で観測されている MJ5 以上の地震で，大阪平野を取り囲むような震央位置にある 7 つの地震を選び，大阪平野内の強震観測点におけるやや長周期地震動の平均卓越周期を求めた。その結果，水平動成分は周期 2～6 秒，上下動成分は 1～3 秒の卓越周期が得られた。 次に，大阪堆積盆地モデルから計算される表面波（Rayleigh 波および Love 波）の分散曲線に基づいて約 1 km×1 km メッシュの卓越周期マップを作成し，関震協観測点で観測されているやや長周期地震動の卓越周期と表面波の卓越周期の比較を行った。その結果，両者は調和的であることから ...
Miyakoshi, Ken, Horike, Masanori
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Frontiers in Built Environment, 2020 This paper is aimed at proposing a hysteretic-viscous hybrid (HVH) damper system for tall buildings subjected to long-period pulse-type earthquake ground motions of extremely large amplitudes. The HVH system was introduced for a single-degree-of-freedom (
Shoki Hashizume, Izuru Takewaki
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Earth, Planets and Space, 2023 In the document titled “predominant period of long-period ground motions and the natural period of deep subsoil” by the Central Disaster Management Council, the west part of Northern Hokkaido facing the Sea of Japan is categorized as a region, where long-
Atsushi Nozu
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Simulation of Spatially Correlated Multipoint Ground Motions in a Saturated Alluvial Valley
Shock and Vibration, 2021 Based on Biot’s theory, the boundary element method, and spectral representation method, an effective simulation method for multiple-station spatially correlated ground motions on both bedrock and surface is developed, incorporating the spectral density ...
Ying He +4 more
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Observations and Modeling of Long‐Period Ground‐Motion Amplification Across Northeast China [PDF]
Geophysical Research Letters, 2018 AbstractBasin resonances can significantly amplify and prolong ground shaking, and accurate site‐amplification estimates are crucial for mitigating potential seismic hazards within metropolitan basins. In this work, we estimate the site amplification of long‐period (2–10 s) ground motions across northeast China for both surface waves and vertically ...
Haichao Chen +2 more
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Terrestrial, Atmospheric and Oceanic Sciences, 2010 This paper tracks the time history and spatial variation of the long-period (1 - 10 sec) strong ground motions recorded in the Taipei basin during the magnitude 7.1 earthquake of 31 March 2002, offshore of eastern Taiwan.
Bor-Shouh Huang +6 more
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Relationship Between Asperities and Velocity Pulse Generation Mechanism
Frontiers in Earth Science, 2022 Near-fault ground motion records often capture instances of pulse-like behavior, where a burst of energy is expressed as large wave amplitude that occur over short time.
Lu Han +4 more
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