Performance of masonry buildings during the 20 and 27 December 2007 Bala (Ankara) earthquakes in Turkey

Adanur, Süleyman

doi:10.5194/nhess-10-2547-2010

Cited by 30 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Failure mechanisms observed during the 2017 Ayvacık (Çanakkale) earthquake swarm were also observed in other recent moderate earthquakes in Bala (M L = 5.5), Dogubeyazıt (M L = 5.1), Dinar (M L = 5.9) and so on (Tezcan, 1996;Bayraktar et al, 2007;Adanur, 2010;Ural et al, 2012). Adanur (2010) showed that based on the investigations after the 20 and 27 December 2007 Bala (Ankara) earthquakes, masonry buildings were built in three types in the affected area: (1) stone masonry buildings with walls made of natural shaped stones, (2) stone masonry buildings with walls made of cut stones and (3) mixed ma-sonry buildings with walls made of masonry materials like stones and mud bricks, stones and bricks or stones and briquette. Overall, a total of 945 buildings were heavily damaged or collapsed in Bala.…”

Section: Damage Profilementioning

confidence: 56%

Damage during the 6–24 February 2017 Ayvacık (Çanakkale) earthquake swarm

Livaoğlu

Timurağaoğlu²,

Serhatoğlu

et al. 2018

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. On 6 February 2017 an earthquake swarm began at the western end of Turkey. This was the first recorded swarm in the Çanakkale region since continuous seismic monitoring began in 1970. The number of earthquakes located increased during the following 10 days. This paper describes the output of a survey carried out in the earthquake-prone towns in the area of Ayvacık, Çanakkale, Turkey, in February 2017 after the earthquakes. Observations of traditional buildings were made on site at the rural area of Ayvacık. A description of the main structural features and their effects on the most frequently viewed damage modes were made according to in-plane, out-of-plane behavior of the wall regarding construction practice, connection type, etc. It was found that there were no convenient connections like cavity ties or sufficient mortar strength resulting in decreased and/or lack of lateral load bearing capacity of the wall. Furthermore, distribution maps of damaged/undamaged buildings according to villages, damage ratios, structures and damage levels are generated. Distribution maps showed that damage ratio of structures is higher in villages close to epicenter and decrease away from epicenter except Gülpınar, where past experiences and development level affect the construction quality.

show abstract

Section: Damage Profilementioning

confidence: 56%

Damage during the 6–24 February 2017 Ayvacık (Çanakkale) earthquake swarm

Livaoğlu

Timurağaoğlu²,

Serhatoğlu

et al. 2018

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…However, due to the low quality of construction this structure type has performed very poorly in recent and past earthquakes (Ali and Mohammad, 2006;Bothara and Brzev, 2011;Gupta et al, 2008;Kaushik et al, 2006;Murty, 2003;Naseer et al, 2010;Rai and Murthy, 2006, among others). The poor performance of stone masonry buildings have been observed also in other parts of the world (Adanur, 2010;Akkar et al, 2011;Gulkan et al, 1992;Ingham and Griffith, 2011;Spence, 2007a).…”

Section: Introductionmentioning

confidence: 82%

Seismic vulnerability of the Himalayan half-dressed rubble stone masonry structures, experimental and analytical studies

Ahmad

Ali

Ashraf

et al. 2012

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Half-Dressed rubble stone (DS) masonry structures as found in the Himalayan region are investigated using experimental and analytical studies. The experimental study included a shake table test on a one-third scaled structural model, a representative of DS masonry structure employed for public critical facilities, e.g. school buildings, offices, health care units, etc. The aim of the experimental study was to understand the damage mechanism of the model, develop damage scale towards deformation-based assessment and retrieve the lateral force-deformation response of the model besides its elastic dynamic properties, i.e. fundamental vibration period and elastic damping. The analytical study included fragility analysis of building prototypes using a fully probabilistic nonlinear dynamic method. The prototypes are designed as SDOF systems assigned with lateral, force-deformation constitutive law (obtained experimentally). Uncertainties in the constitutive law, i.e. lateral stiffness, strength and deformation limits, are considered through random Monte Carlo simulation. Fifty prototype buildings are analyzed using a suite of ten natural accelerograms and an incremental dynamic analysis technique. Fragility and vulnerability functions are derived for the damageability assessment of structures, economic loss and casualty estimation during an earthquake given the ground shaking intensity, essential within the context of risk assessment of existing stock aiming towards risk mitigation and disaster risk reduction

show abstract

“…The strength of masonry under these conditions often depends on the bond between stone and mortar (or brick and mortar). This bond is often very poor when lime mortars or mud mortars are used [5]. Massive losses of both human lives and properties from the Nepal earthquake in 2015 demonstrate the need to strengthen masonry structures due to their poor seismic performance, as indicated by their inherent brittleness and low tensile strength [6].…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Housing Structures’ Earthquake Vulnerability in Two Parts of Dhaka City

Ahmed

Morita

2018

Sustainability

View full text Add to dashboard Cite

The damage done in earthquake disasters is correlated to the types of housing structures that are present. In the last two decades of urbanization in Dhaka, rapid growth without proper planning has been a major concern. This study evaluates the performance of the decision tree and random forest techniques to predict structures' vulnerability factors for buildings as a step towards improving earthquake disaster preparedness. Applying the decision tree algorithm to locations (wards) in Dhaka North City Corporation (DNCC) and Dhaka South City Corporation (DSCC), we observed some important predictors of earthquake damage. Decision tree analysis reveals that the most important predictor for structures that fare well in earthquakes is the use of reinforced concrete, and a common factor among the most vulnerable structures is the soft story building style in the DNCC and DSCC areas. The random forest technique also showed reinforced concrete as being the most important factor for lowering the risk for housing structures, with the model having a 24.19% out-of-bag (OOB) error. As for vulnerability, soft story construction was a significant factor in estimating earthquake susceptibility (40.32% OOB error). The findings reveal that building materials in the DNCC are stronger than those in the DSCC but soft story buildings are more common in the DNCC, which make it one of the weakest parts of the area and point to the need to make plans to seismically retrofit soft story buildings.

show abstract

Performance of masonry buildings during the 20 and 27 December 2007 Bala (Ankara) earthquakes in Turkey

Cited by 30 publications

References 7 publications

Damage during the 6–24 February 2017 Ayvacık (Çanakkale) earthquake swarm

Damage during the 6–24 February 2017 Ayvacık (Çanakkale) earthquake swarm

Seismic vulnerability of the Himalayan half-dressed rubble stone masonry structures, experimental and analytical studies

An Analysis of Housing Structures’ Earthquake Vulnerability in Two Parts of Dhaka City

Contact Info

Product

Resources

About