scholarly journals SIMPLE EVALUATION INDEX FOR STRUCTURAL DAMAGE OF HIGH-RISE REINFORCED CONCRETE BUILDINGS DUE TO LONG-PERIOD STRONG GROUND MOTION

2018 ◽  
Vol 18 (3) ◽  
pp. 3_75-3_90
Author(s):  
Hirotoshi UEBAYASHI ◽  
Masayuki NAGANO ◽  
Katsuhiro KAMAE ◽  
Hidenori KAWABE
Keyword(s):  
Reinforced Concrete ◽  
Ground Motion ◽  
Structural Damage ◽  
Strong Ground Motion ◽  
Evaluation Index ◽  
Reinforced Concrete Buildings ◽  
High Rise ◽  
Long Period ◽  
Simple Evaluation ◽  
Strong Ground

30 Ooctober 2020 Samos-Sigacik Earthquake: On Strong Ground Motion and Local Site Amplification

2021 ◽  
Author(s):  
Eser Çakti ◽  
Karin Sesetyan ◽  
Ufuk Hancilar ◽  
Merve Caglar ◽  
Emrullah Dar ◽  
...  
Keyword(s):  
Ground Motion ◽  
Structural Damage ◽  
Strong Ground Motion ◽  
Epicentral Distance ◽  
Strong Motion ◽  
Aegean Sea ◽  
Site Amplification ◽  
Local Site ◽  
Basin Effects ◽  
Strong Ground

<p>The Mw 6.9 earthquake that took place offshore between the Greek island of Samos and Turkey’s İzmir province on 30 October 2020 came hardly as a surprise. Due to the extensional tectonic regime of the Aegean and high deformation rates, earthquakes of similar size frequently occur in the Aegean Sea on fault segments close to the shores of Turkey, affecting the settlements on mainland Turkey and on the Greek Islands. Samos-Sigacik earthquake had a normal faulting mechanism. It was recorded by the strong motion networks in Turkey and Greece. Although expected, the earthquake was an  outstanding event in the sense of  highly localized, significant levels of building damage as a result of amplified ground motion levels. This presentation is an overview of strong ground motion characteristics of this important event both regionally and locally. Mainshock records suggest that local site effects, enhanced by basin effects could be responsible for structural damage in central Izmir, the third largest city of Turkey located at 60-70 km epicentral distance. We installed a seven-station network in Bayraklı and Karşıyaka districts of İzmir within three days of the mainshock in search of site and basin effects.  Through analysis of recorded aftershocks we explore the amplification characeristics of soils in the two aforementioned districts  and try to understand the role basin effects might have played in the resulting ground motion levels and consequently damage. </p>

Evaluation of the structural damage of high-rise reinforced concrete buildings using ambient vibrations recorded before and after damage

2015 ◽  
Vol 45 (2) ◽  
pp. 213-228 ◽  
Author(s):  
Hirotoshi Uebayashi ◽  
Masayuki Nagano ◽  
Takenori Hida ◽  
Takehiko Tanuma ◽  
Mitoshi Yasui ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Structural Damage ◽  
Ambient Vibrations ◽  
Reinforced Concrete Buildings ◽  
Concrete Buildings ◽  
High Rise ◽  
Before And After

231 Long-Period Strong Ground Motion at the Oil Storage Tank Sites Damaged due to the 1999 Chi-Chi Earthquake in Taiwan

2001 ◽  
Vol 2001.14 (0) ◽  
pp. 185-186
Author(s):  
Shoichi YOSHIDA ◽  
Shinsaku ZAMA ◽  
Minoru YAMADA ◽  
Kazuo ISHIDA ◽  
Takayasu TAHARA
Keyword(s):  
Ground Motion ◽  
Storage Tank ◽  
Strong Ground Motion ◽  
Long Period ◽  
Oil Storage ◽  
Oil Storage Tank ◽  
Strong Ground

scholarly journals A technique for simulating strong ground motion using hybrid Green's function

1998 ◽  
Vol 88 (2) ◽  
pp. 357-367 ◽  
Author(s):  
Katsuhiro Kamae ◽  
Kojiro Irikura ◽  
Arben Pitarka
Keyword(s):  
Green’S Function ◽  
Ground Motion ◽  
Green's Function ◽  
Green's Functions ◽  
Strong Ground Motion ◽  
Green’S Functions ◽  
Ground Motions ◽  
Large Earthquake ◽  
Long Period ◽  
Strong Ground

Abstract A method for simulating strong ground motion for a large earthquake based on synthetic Green's function is presented. We use the synthetic motions of a small event as Green's functions instead of observed records of small events. Ground motions from small events are calculated using a hybrid scheme combining deterministic and stochastic approaches. The long-period motions from the small events are deterministically calculated using the 3D finite-difference method, whereas the high-frequency motions from them are stochastically simulated using Boore's method. The small-event motions are synthesized summing the long-period and short-period motions after passing them through a pair of matched filters to follow the omega-squared source model. We call the resultant time series “hybrid Green's functions” (HGF). Ground motions from a large earthquake are simulated by following the empirical Green's function (EGF) method. We demonstrate the effectiveness of the method at simulating ground motion from the 1995 Hyogo-ken Nanbu earthquake (Mw 6.9).

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