An Overview of Local Site Effects and the Associated Building Damage in Adapazari during the 17 August 1999 Izmit Earthquake

Bakır, B. Sadık; Sucuoğlu, Halûk; Yilmaz, Tolga

doi:10.1785/0120000819

Cited by 80 publications

(46 citation statements)

References 5 publications

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“…Taking into consideration the existence of several landfills in Lisbon (Dias 2013), numerical simulations were performed to compute the transfer functions of these deposits , 2014 in order to estimate their potential effect on building seismic response (Bakir et al 2002;Navarro et al 2012). From the computations it was observed that the effects of these superficial deposits are only significant when the deposits are more than 10 m thick and, due to their natural frequencies, for buildings with more than five floors.…”

Section: Building Vulnerability Indicesmentioning

confidence: 99%

3D City Models as a Visual Support Tool for the Analysis of Buildings Seismic Vulnerability: The Case of Lisbon

Redweik

Teves-Costa

Vilas-Boas³

et al. 2017

Int J Disaster Risk Sci

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3D city models associate a database of a city to a rigorous geospatial representation that is close to the visible reality by combining appearance, geometry, and semantics. As such, these models may include tools that convey attribute analysis, not only at the statistical level but also in terms of visual appearance of the objects, thus allowing the generation of new knowledge about a phenomenon or its effects. Lisbon is a city with a moderate level of seismic risk, and has been hit in the past by strong earthquakes. Several seismic vulnerability studies of buildings have been carried out in Lisbon. These studies generate different scenarios that consider the magnitude and source location of potential earthquakes. The results of these studies were presented as maps obtained from crossing information contained in 2D layers and presented in a GIS environment. In the present study a seismic vulnerability assessment of Lisbon's buildings held in 2D is extended to the third dimension, which refines the resolution and the set of parameters and explores the gains of spatial analysis in 3D representations. The numerous parameters that contribute to assess seismic vulnerability of buildings may be analyzed individually or simultaneously as well as in multiple seismic scenarios. Although covering all residential buildings in Lisbon, the application of the 3D city model is demonstrated with more detail in three pilot areas.

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Section: Building Vulnerability Indicesmentioning

confidence: 99%

3D City Models as a Visual Support Tool for the Analysis of Buildings Seismic Vulnerability: The Case of Lisbon

Redweik

Teves-Costa

Vilas-Boas³

et al. 2017

Int J Disaster Risk Sci

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“…The predominant period, which is defined as the period in which the maximum soil amplification (the highest peak amplitude of the H/V ratio curve) occurs, is used as a significant parameter in the assessment of building damage (Fallahi et al 2003, Gosar 2007, Chatelain et al 2008. Several authors have shown the dependent relationship between building damage and the correspondence between the natural period of buildings and the predominant period of the soil layers (Cranswick et al 2000, Navarro et al 2000, Bakir et al 2002, Oliveira et al 2006, Motamed et al 2007). Figure 6): (a) RC momentframe system for a four-story building built in Zone 1A in 1996, (b) RC moment-frame system for a five-story building built in Zone 1B in 1970, and (c) RC shear-wall system for a five-story building built in Zone 2 in 1986.…”

Section: Local Site Conditions H/v Spectral Ratiosmentioning

confidence: 99%

The Effects of Building Characteristics and Site Conditions on the Damage Distribution in Boumerdès after the 2003 Algeria Earthquake

et al. 2012

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This study highlights the major contributing factors to the observed damage distribution in the city of Boumerdès after the 2003 Algeria earthquake. The results of field investigations and statistical analyses show that a majority of the damaged buildings, mostly mid-rise reinforced concrete (RC) moment-frame systems, were located on steep slopes and small hilltops, along river valleys. The horizontal-to-vertical (H/V) ratios from free-field microtremor measurements at these sites did not show clear results. In contrast, buildings with the same structural characteristics located on flat ground did not suffer much damage, and clear peaks were observed from the H/V ratio curves. The amplification effects of topography have not been incorporated into the revised Algerian seismic code, but the results from this study show the importance of considering this factor when designing new buildings for earthquake resistance.

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“…Kramer (1996) emphasized that soil conditions affect the amplitude, frequency and duration of ground movements [2]. Some researchers indicated that damage on the alluvial soils are more significant than damage on the bedrock outcrops [3] [4]. This situation can be explained by amplification of the ground motion in an alluvial basin [5].…”

Section: Introductionmentioning

confidence: 99%

GIS – based evaluation of the effect of local soil properties on the earthquake damage patterns

Sert¹,

Özocak²,

Bol³

2016

SAUFenBilDer

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Moderate magnitude earthquakes hit the Sakarya region, Turkey, in the range of 10-30 years. The 1999 earthquakes, which occurred in the study area, gave different damage patterns due to the variation of soil properties. In-situ and laboratory investigations were performed by Sakarya University in the centres of two townships in the Sakarya region: Arifiye and Geyve, which are known to possess different soil properties. Borings and cone penetration soundings were performed around the selected towns and data were entered into a database, which is connected to a Geographical Information System (GIS) software. Some thematic maps have been prepared for depths up to 15 m and an evaluation of damage patterns has been performed from points of view including: geology, geomorphology and geotechnical engineering in the investigation area. By evaluating the maps prepared in GIS, local soil properties affected the earthquake destruction of buildings. The number of heavily damaged buildings decreased with increasing bearing capacity. It was also proven that the liquefaction phonomena has not occurred in clayey areas.

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An Overview of Local Site Effects and the Associated Building Damage in Adapazari during the 17 August 1999 Izmit Earthquake

Cited by 80 publications

References 5 publications

3D City Models as a Visual Support Tool for the Analysis of Buildings Seismic Vulnerability: The Case of Lisbon

3D City Models as a Visual Support Tool for the Analysis of Buildings Seismic Vulnerability: The Case of Lisbon

The Effects of Building Characteristics and Site Conditions on the Damage Distribution in Boumerdès after the 2003 Algeria Earthquake

GIS – based evaluation of the effect of local soil properties on the earthquake damage patterns

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