Investigation of Effects of Nonlinear Static Analysis Procedures to Performance Evaluation on Low-Rise RC Buildings

İrtem, Erdal; Hasgül, Umut

doi:10.1061/(asce)cf.1943-5509.0000047

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…Binaların kalıp planlarına ait görünümler Şekil 1a, 1b ve 1c'de verilmiştir. Düzgün ve simetrik geometriye sahip kalıp planları kullanılarak çeşitli çalışmalar yapılmıştır [3,[17][18][19]. Yapı modellerinin süneklik düzeyi yüksek, Z3 zemin sınıfı üzerinde ve birinci derece deprem bölgesinde olduğu varsayılmıştır.…”

Section: Binaların Model öZelliklerinin Tanımlanmasıunclassified

Kapalı Çıkmalı Betonarme Binaların Deprem Davranışının Değerlendirilmesi

Meral¹

2019

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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Öz: Çalışma kapsamında kapalı çıkmaların betonarme binaların deprem davranışına etkileri doğrusal olmayan zaman tanım alanında analizler yapılarak belirlenmiştir. Bunun için ilk önce hiçbir düzensizliğe sahip olmayan 2-, 4-ve 7-katlı 3-B referans binalar 2007 Deprem Yönetmeliği'ne göre tasarlanmıştır. Daha sonra bu binalara çıkmalar eklenerek kirişli ve kirişsiz kapalı çıkmalı bina modelleri oluşturulmuştur. Binaların 10 adet deprem ivme kaydıyla toplamda 90 adet doğrusal olmayan analizi yapılarak taban kesme kuvveti, tepe noktası ötelenme ve maksimum göreli kat ötelenme oranı gibi parametreler elde edilmiştir. Bu parametreler kapalı çıkmalı binaların deprem davranışının incelenmesi amacıyla karşılaştırılmıştır. Kirişsiz kapalı çıkmalı binalarda diğer binalara göre taban kesme kuvveti taleplerinin düşük, deplasman taleplerinin ise yüksek olduğu belirlenmiştir.Anahtar kelimeler: Betonarme binalar, kapalı çıkma, zaman tanım alanında analiz, doğrusal olmayan davranış. Abstract:In the scope of the study, the effects of heavy overhangs on earthquake behavior of reinforced concrete buildings are determined by creating nonlinear time history analyzes. For this at first, 2-, 4-and 7-storey 3-D reference buildings which have no irregularity are designed according to the 2007 Turkish Earthquake Code. Later, extensions are added to these buildings to create beamed and non-beam building models with heavy overhang. A total of 90 nonlinear analyzes of the buildings with 10 earthquake acceleration records are performed to obtain parameters such as base shear force, roof drift and maximum interstory drift ratio. These parameters have been compared to examine earthquake behavior of buildings with heavy overhang. It has been determined that the base shear force demands of the non-beam buildings with heavy overhang are low while the displacement demands of them are high compared to other buildings.

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Section: Binaların Model öZelliklerinin Tanımlanmasıunclassified

Kapalı Çıkmalı Betonarme Binaların Deprem Davranışının Değerlendirilmesi

Meral¹

2019

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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“…It was mentioned that nonlinear static procedures were widely used in engineering practices in estimating seismic demands of buildings. Irtem and Hasgul (2009), in their studies, have aimed to evaluate and compare the structural reaction requests obtained from the capacity spectrum method (CSM) proposed in ATC-40 which is one of the nonlinear static analysis procedures (NSPs) and from displacement coefficients methods (DCM) proposed in FEMA 356. For this purpose, they have studied three dimensionally three multiple storied reinforcement concrete buildings of different characteristics.…”

Section: Static Pushover Analysismentioning

confidence: 99%

Performance based study on the seismic safety of buildings

Çelik¹,

Budak²

2018

CJSMEC

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In the scope of this study, information has been provided on the Static Pushover Analysis which is a nonlinear deformation controlled analysis method and the Capacity Spectrum Method used to determine the performance point. In this study, static pushover analysis was made on a six-storey building with reinforcement concrete frame system by changing the materials, steel rebars and soil characteristics. The building’s capacity curves were drawn and decided according to different concrete and reinforcement groups. Furthermore the performance points of different classes of concrete were studied according to three seismic effect levels. In the case of a decrease in the reinforcement strength, a decrease of approximately 30% occurs in the base shear force. If the concrete strength is increased, an increase of 11% occurred in the base shear force. Consequently, in the comparisons made with five different concrete groups and two different reinforcement groups, rather than the increase in the strength of the concrete, an increase in the reinforcement strength was observed to be more effective on the structural capacity. Furthermore, local soil classifications were observed to be the most significant point regarding peak displacement.

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“…Single degree-of-freedom (SDOF) system approach is used in determination of demands in NSPs recommended in ATC 40 and FEMA 356, which is called as capacity spectrum method (CSM) and displacement coefficient method (DCM), respectively. However, these procedures have some discrepancy in determination of displacement demand for the same building model and under a specific ground motion [8] [9]. Consequently, same building performances may not be obtained due to these discrepancies in the analysis procedures.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Effects of Capacity Spectrum Method on Performance Evaluation of Multi-Story Buildings According to the IRAQI Seismic Code Requirements

Amer¹,

Sobaih²,

Adel³

2016

OJCE

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The aim of this study is to assess the performance objectives defined in the Iraqi Seismic Code (ISC) in order to make a realistic evaluation related to Performance-Based Seismic Design (PBSD) of multi-story reinforced concrete buildings and also to compare and evaluate structural response demands obtained from nonlinear static analysis procedures according to two versions of the capacity spectrum method (CSM) which are recommended in ATC 40 and ATC 55. Two groups of three-dimensional RC buildings with different heights, designed according to Iraqi Building Code Requirements for Reinforced Concrete (IBC), are investigated. Pushover analyses are carried out to determine the nonlinear behavior of the buildings under three different seismic hazard levels, for two Iraqi seismic zones, of earthquake loads. In order to determine performance levels of the buildings, maximum inter-story drift demands and plasticizing sequence are determined and compared with the related limits using the CSM recommended in ATC 40 and ATC 55. From the results of this research, it can be concluded that RC buildings designed according to the Iraqi codes sufficiently provide the performance objectives stipulated in the ISC. Comparing structural response quantities obtained from the two versions of CSM, effects on performance evaluations of the buildings are investigated comparatively, as well.

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Investigation of Effects of Nonlinear Static Analysis Procedures to Performance Evaluation on Low-Rise RC Buildings

Cited by 8 publications

References 4 publications

Kapalı Çıkmalı Betonarme Binaların Deprem Davranışının Değerlendirilmesi

Kapalı Çıkmalı Betonarme Binaların Deprem Davranışının Değerlendirilmesi

Performance based study on the seismic safety of buildings

Investigation of Effects of Capacity Spectrum Method on Performance Evaluation of Multi-Story Buildings According to the IRAQI Seismic Code Requirements

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