Evaluations on the relation of RC building damages with structural parameters after May 19, 2011 Simav (Turkey) earthquake

Özmen, Hayri Baytan; İnel, Mehmet; Akyol, Erdal; Cayci, Bayram Tanik; Ün, Hayri

doi:10.1007/s11069-013-0900-y

Cited by 17 publications

(10 citation statements)

References 13 publications

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“…The use 70% of required number of core samples in the seismic codes can successfully estimate the average compressive strength of buildings with 15% deviation for all concrete strength values obtained in the study (4)(5)(6)(7)(8)(9)(10)(11)(12). However, the use of 50% of the required samples provides successful estimated for the concrete strength values equal to or higher than 8 MPa, …”

Section: Discussionmentioning

confidence: 99%

“…The ground motion has been strongly felt by approximately 135.000 people and caused observable damage around a maximum of 25 km radius from the epicenter. Although the magnitude of earthquake is moderate, the effects of the earthquake on the structures are serious [10]. The number of damaged and collapsed buildings around Simav is given in Table 1.…”

Section: Simav Earthquakementioning

confidence: 99%

“…Therefore, the investigation on the concrete strength variability using the existing buildings is important. The buildings slightly or moderately damaged after May 19, 2011 Simav earthquake [10], offers an important possibility for such an investigation.…”

Section: Building Datamentioning

confidence: 99%

See 2 more Smart Citations

Investigation of concrete compressive strength of existing buildings depending on number of core samples

İnel¹,

Cayci²,

Özmen³

2019

Pamukkale J Eng Sci

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Concrete strength is one of the most critical parameters that affect the seismic performance of reinforced concrete constructions. One of the common methods to determine the concrete compressive strength is to take core samples from structural members. However, the number of taken core samples-based on the size of the construction-is important for reliable results, especially in old constructions. This study aims to investigate the possibility of determination of the concrete compressive strength values of existing buildings using lower number of core samples than the required number of cores. For this purpose, experimental results of core samples taken from 148 slightly or moderately damaged reinforced concrete buildings during 2011 Simav Earthquake. Concrete compressive strength values based on 15 different sets obtained by using 50% and 70% of the core samples of each building are compared. The compressive strength values calculated from the sets were compared with the average compressive strengths of all core samples to investigate accuracy of estimation of compressive strength with using lower number of core samples. The study also investigates whether there is a significant difference between samples taken from a single story (i.e. ground story) compared to the whole building. It is concluded that the use of %50 of the required core samples is possible for the rapid assessment or large-scale field investigation studies when the obtained concrete strength is equal to or greater than 8 MPa. However, additional core samples to complete 70% of the code required samples are required for concrete strength values lower than 8 MPa.

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Section: Discussionmentioning

confidence: 99%

Section: Simav Earthquakementioning

confidence: 99%

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Investigation of concrete compressive strength of existing buildings depending on number of core samples

İnel¹,

Cayci²,

Özmen³

2019

Pamukkale J Eng Sci

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“…One of the most widely used surface wave analysis methods to calculate V S30 and site response analysis is the Multichannel Analysis of Surface Wave (MASW) method [23,24]. e MASW is a seismic survey employed to record Rayleigh waves on a multichannel record [25].…”

Section: Methodsmentioning

confidence: 99%

A Comparative Study on the V_S30 and N₃₀ Based Seismic Site Classification in Kahramanmaras, Turkey

Naji

Akın

Çabalar

2020

Advances in Civil Engineering

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Assessment of seismic site classification (SSC) using either the average shear wave velocity (VS30) or the average SPT-N values (N30) for upper 30 m in soils is the simplest method to carry out various studies including site response and soil-structure interactions. Either the VS30- or the N30-based SSC maps designed according to the National Earthquake Hazards Reduction Program (NEHRP) classification system are effectively used to predict possible locations for future seismic events. The main goal of this study is to generate maps using the Geographic Information System (GIS) for the SSC in Kahramanmaras city, influenced by both East Anatolian Fault and Dead Sea Fault Zones, using both VS30 and N30 values. The study also presents a series of GIS maps produced using the shear wave velocity (VS) and SPT-N values at the depths of 5 m, 10 m, 15 m, 20 m, and 25 m. Furthermore, the study estimates the bed rock level and generates the SSC maps for the average VS values through overburden soils by using the NEHRP system. The VS30 maps categorize the study area mainly under class C and limited number of areas under classes B and D, whereas the N30 maps classify the study area mainly under class D. Both maps indicate that the soil classes in the study area are different to a high extent. Eventually, the GIS maps complied for the purpose of urban development may be utilized effectively by engineers in the field.

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“…e second group (Set 2) has four residential buildings built before the Simav earthquake dated 2011, and they were lightly damaged and retrofitted ones [36,37]. Although the dimensions, infill wall ratios, and purpose of construction are similar to those in Set 1, construction quality is poor.…”

Section: Methodsmentioning

confidence: 99%

Determination of Period of RC Buildings by the Ambient Vibration Method

İnel

Özmen

Cayci

2019

Advances in Civil Engineering

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Determining the dynamic properties of structures is important for understanding their seismic behaviour. Ambient vibration signal measurement is one of the approaches used to determine the period of structures. Advantages of this method include the possibility of taking real-time records and presenting nondestructive and rapid solutions. In this study, natural vibration periods are calculated by taking ambient vibration signal records from 40 buildings. The height of the building, infill wall effect, presence of seismic retrofit, and presence of damage are taken into consideration, and their effects on natural vibration periods are investigated. Moreover, the results are compared with the analytical methods to reveal the differences. A significant correlation between the period and height of the building is observed. It is seen that the natural vibration periods of the buildings decrease by 7% to 30% (15% on average) due to infill wall contribution. However, the efficiency of infill walls decreases as the building height increases. Another significant result is that adding shear walls substantially decreases the vibration period values by 23% to 33% with respect to the shear wall ratio. When the analytical estimates and measured building period results are compared, it is seen that analytical models have closer period estimates before infill walls are implemented. The limited data in scope of the study suggest that significant differences may present in the analytical and measured periods of the buildings due to infill wall contributions.

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Evaluations on the relation of RC building damages with structural parameters after May 19, 2011 Simav (Turkey) earthquake

Cited by 17 publications

References 13 publications

Investigation of concrete compressive strength of existing buildings depending on number of core samples

Investigation of concrete compressive strength of existing buildings depending on number of core samples

A Comparative Study on the V_S30 and N₃₀ Based Seismic Site Classification in Kahramanmaras, Turkey

Determination of Period of RC Buildings by the Ambient Vibration Method

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Evaluations on the relation of RC building damages with structural parameters after May 19, 2011 Simav (Turkey) earthquake

Cited by 17 publications

References 13 publications

Investigation of concrete compressive strength of existing buildings depending on number of core samples

Investigation of concrete compressive strength of existing buildings depending on number of core samples

A Comparative Study on the VS30 and N30 Based Seismic Site Classification in Kahramanmaras, Turkey

Determination of Period of RC Buildings by the Ambient Vibration Method

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Product

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A Comparative Study on the V_S30 and N₃₀ Based Seismic Site Classification in Kahramanmaras, Turkey