VS30, site amplifications and some comparisons: The Adapazari (Turkey) case

Ozcep, Tazegul; Özçep, Ferhat; Özel, Oğuz

doi:10.1016/j.pce.2013.05.003

Cited by 11 publications

(5 citation statements)

References 38 publications

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“…Gómez-Arredondo, C. M 1* , Alejandro-Almeida, E. 1 1 Universidad Juárez Autónoma de Tabasco * carmen.gomez@ujat.mx Resumen Anteriormente, el estado de Tabasco era clasificado como una zona de bajo peligro sísmico, debido a la ausencia de registros de terremotos fuertes. Actualmente, existe la evidencia de que sismicidad en estados aledaños, ha causado daños considerables en la entidad.…”

Section: Determinación El Parámetro Vs30 En El Municipio De Teapa Tab...unclassified

“…Los daños ocasionados por un evento sísmico en áreas urbanas tienen una amplia relación con las condiciones geológicas locales. Dentro de los factores que se ven afectados por las condiciones del sitio se encuentran la duración del sismo, la amplitud, la magnitud y la frecuencia (Ozcep et al, 2013) Una gran influencia de estas condiciones la tienen las características locales del suelo, dado que en el caso de los suelos poco consolidados, las velocidades de las ondas de corte son menores, y estos tienden a amplificar el movimiento del suelo durante su viaje, lo que aunado con la vulnerabilidad de las construcciones en superficie se puede traducir en un aumento en los daños en edificios, viviendas etc., y afectar a la población en gran medida. Es esa amplificación del movimiento sísmico, es lo que se conoce como efecto de sitio (Chávez-Garcia and Montalva, 2014).…”

Section: Introductionunclassified

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Determinación el parámetro Vs30 en el Municipio de Teapa, Tabasco

Gómez-Arredondo,

Alejandro-Almeida

2024

J. Basic Sci.

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Anteriormente, el estado de Tabasco era clasificado como una zona de bajo peligro sísmico, debido a la ausencia de registros de terremotos fuertes. Actualmente, existe la evidencia de que sismicidad en estados aledaños, ha causado daños considerables en la entidad. Uno de los parámetros que permite estimar los efectos que podrían tener los terremotos es la velocidad promedio de las ondas superficiales en los primeros 30 metros del subsuelo (Vs30). Este parámetro fue obtenido en 19 puntos distribuidos en el municipio de Teapa, resultando en velocidades que varían de los 257 a 556 m/s y clasificándose como suelos tipo C y D de acuerdo con NEHRP. Esto pone en evidencia que la región puede estar sujeta a amplificaciones del movimiento del suelo ante la ocurrencia de un terremoto.

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Section: Determinación El Parámetro Vs30 En El Municipio De Teapa Tab...unclassified

Section: Introductionunclassified

Determinación el parámetro Vs30 en el Municipio de Teapa, Tabasco

Gómez-Arredondo,

Alejandro-Almeida

2024

J. Basic Sci.

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“…Work has also been done on the optimal values of the plateaus of the design spectra for the limit state of collapse (Rosenblueth, 1976;Esteva & Ordaz, 1988;Rocha & Schroeder, 2008). On the other hand, by using geophysics through seismic and electrical methods, certain states of the Mexican Republic and the world have characterized their soil through the wave velocities and resistivities of the Earth's surface layers (Alonso, et al, 1995;Cosenza et al, 2006;70 Dai et al, 2019;Gómez-Arredondo, et al, 2016;Gómez-Arredondo, et al, 2020;Jaramillo, 2012;Liu et al, 2013;Montalvo-Arrieta, 2005;Ozcep et al, 2013;Pancha, 2008;Valdebenito et al, 2015). All the efforts described in this section have focused on areas of greater infrastructure and with high seismicity, leaving second or third plane the areas of greater infrastructure and low seismicity or of low infrastructure and low seismicity.…”

Section: Previous Studiesmentioning

confidence: 99%

Subsoil seismic characterization through Vs30 for future structural assessment of buildings (Ciudad del Carmen, Mexico)

Palemón-Arcos

Gómez-Arredondo

Damas-López

et al. 2020

Preprint

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Abstract. Although the seismic information from the subsoil is very important, in some areas of the world this is not available due to various factors, the main one being a seismically low area. It is important to say that the planet has been changing and many intraplate earthquakes have occurred in places never expected, spreading seismic waves to places where they were considered low seismicity. For example, on September 8, 2017 in Ciudad del Carmen, 500 km from the epicenter, the earthquake was felt causing damage to the facades of the buildings. Therefore, it is important to have the subsoil shear-waves velocities to subsequently generate a good analysis and structural seismic design. For this reason, in this study under the seismic approach an assessment of Ciudad del Carmen Campeche subsoil is presented. Active and passive Multichannel Analysis of Surface Waves and Refraction Microtremor technique to investigate seismically subsoil characteristics have been employed. Shear wave velocities were obtained up to a depth of 30 m with magnitudes of 172.45 m/s to 353.90 m/s. Based on the Vs30 values, the subsoil is seismically classified into D and E according to the criterion of the National Earthquake Hazards Reduction Program and International Building Code, turning out to be very vulnerable to high damage during the earthquake shaking. Furthermore, Ciudad del Carmen was regionalized into three types, where type I being a dense soil or averagely soft rock with Vs30 greater than 360 m/s, type II when the soil has an intermediate dynamic amplifications with Vs30 between 180 to 360 m/s, and type III correspond to a soil with large dynamic amplifications and Vs30 less than 180 m/s.

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“…The outcrop data from the shaking event recorded in the EW direction in the south of the Adapazari city with a PGA of 0.4 g (4.07 m/s 2 ) was applied as an acceleration time history at the bottom of the model. Figure 5 shows the input ground motion and Figure 6 depicts the Vs profile deduced from Komazawa et al (2002) and Ozcep et al (2013). Relying on these references, the "C soil" was considered 50 meters below the ground surface (Figure 6).…”

confidence: 99%

Investigation into the Settlement of a Case Study Building on Liquefiable Soil in Adapazari, Turkey

Quintero¹,

Saldanha²,

Millen³

et al. 2018

Geotechnical Earthquake Engineering and Soil Dynamics V

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This paper investigates the key parameters that influenced the settlement of a case study building on liquefiable soil in Adapazari (Turkey) during the 1999 Kocaeli earthquake. Ground movements in Adapazari caused large devastation, largely attributed to liquefaction of low plasticity silty soil layers underneath buildings on shallow foundations. The case study soil profile was well characterized by in-situ testing as well as laboratory tests from the Adapazari area. This allowed several different estimates of the building settlement to be obtained through different methods and through a variation in upper and lower bound estimates of the soil parameters. The different methods and different soil properties resulted in a wide range of estimates from 0.004 m to 1.6 m for the building settlement, compared to the observed in-situ value of 0.9 m. Even though the results were varied, the estimation of the liquefied strength of the soil appeared to be a key parameter for the settlement of the case study building. A detailed study with the PLAXIS finite-element software and UBC3D-PLM constitutive model, provided a consistent estimate of the final settlement of 0.9 m compared to the in-situ value. However, the limitation due to the enforced 'undrained' conditions during the dynamic phase of the analyses may have resulted in an inaccurate simulation of the pore water pressure and subsequently could have influenced the estimation of settlement. The modeling of the liquefaction settlements under free-field conditions was also considerably less than the re-consolidation settlements that were obtained through simplified procedures, suggesting that the re-consolidation settlement under the foundation was not modelled accurately. The present paper focuses on the assessment of the settlements due to earthquake-induced liquefaction as part of the research being conducted within the European project LIQUEFACT.

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VS30, site amplifications and some comparisons: The Adapazari (Turkey) case

Cited by 11 publications

References 38 publications

Determinación el parámetro Vs30 en el Municipio de Teapa, Tabasco

Determinación el parámetro Vs30 en el Municipio de Teapa, Tabasco

Subsoil seismic characterization through Vs30 for future structural assessment of buildings (Ciudad del Carmen, Mexico)

Investigation into the Settlement of a Case Study Building on Liquefiable Soil in Adapazari, Turkey

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