Yazarlar
- Yurdakul, Muhammet(10)
- Cuce, Erdem(9)
- Ergün, Mustafa(8)
- Artar, Musa(7)
- Ates, Sevket(5)
- Cuce, Pinar Mert(5)
- Cakici, Ziya(4)
- Demirtaş, Betül(4)
- Murat, Yetis Sazi(4)
- Tayfur, Bilal(4)
- Tonyali, Zeliha(4)
- Aymelek, Abdullah(3)
- Can, Ömer(3)
- Kiral, Adnan(3)
- Türker, Temel(3)
- Türkmen, Mutlu(3)
- Yanik, Yusuf(3)
- Alacadağlı, Esmeray(2)
- Apak, Ömer Ceyhun(2)
- Ateş, Şevket(2)
- Azimkhani, Amin(2)
- Ergun, Mustafa(2)
- Guleryuz, Didem(2)
- Kara, Adnan(2)
- Ozden, Erdemalp(2)
- Saatchian, Vahid(2)
- Tapkın, Serkan(2)
- Tercan, Emre(2)
- Tozlu, Alperen(2)
- Uyar, Mehmet(2)
- Yarımkaya, Erkan(2)
- Yildirim, Ömer(2)
- Yilmaz, Fatih(2)
- Yıldız, Seçil Gül Meydan(2)
- Şengün, Hayriye(2)
- Şentürk, İdris(2)
- Abusoglu, Aysegul(1)
- Adanur, Suleyman(1)
- Ahiskali, Adem(1)
- Alacadağli, Esmeray(1)
Yayınlar
- MakaleAçık Erişim2014Scopus SJRQ1Nonlinear dynamic analysis of base isolated cable-stayed bridge under earthquake excitations
Atmaca, Barbaros; Yurdakul, Muhammet; Ateş, Şevket
In this paper, it is aimed to determine the earthquake effects on cable-stayed bridge isolated by single concave friction pendulum bearings (SCFP). In this context, Manavgat cable-stayed bridge is selected as a numerical application. The selected bridge has 202. m composite deck and 42. m steel tower. 3D finite element models (FEM) of the base isolated and non-isolated bridge are modeled by using SAP2000. Three different earthquakes which are 11 December 1999 Düzce, 23 November 2011 Van and 13 March 1992 Erzincan earthquakes are subjected to the 3D FEM models in order to determine the seismic behavior of the bridges. BOL-090 and BOL-000; ERCIS-EW and ERCIS-NS; ERZ-NS and ERZ-EW components of ground motions obtained from PEER and AFAD are applied to the bridges at the longitudinal and transverse directions, respectively. Nonlinear time history analysis is executed to determine the dynamic responses of the bridge. Comparison of dynamic behavior of isolated and non-isolated bridge with and without the SCFP bearings under three different earthquake motions has been conducted. The results obtained from analyses of 3D FEM of the bridge are presented by graphics and tables in detail. It is seen that using of isolation system reduces the destructive effects of earthquakes on the bridge.
AtıfScopus36WoS28OpenAlex36
İncele - MakaleAçık Erişim2013Scopus SJRQ1Damages on reinforced concrete buildings due to consecutive earthquakes in Van
Ates, Sevket; Kahya, Volkan; Yurdakul, Muhammet; Adanur, Suleyman
Consecutive earthquakes occurred on October 23rd, 2011 in Ercis and on November 9th, 2011 in Edremit that are townships located 90. km and 18. km far from Van city in Turkey, respectively. A total of 28,000 buildings were damaged or collapsed in the city center and the surrounding villages after the Ercis earthquake. This number reached 35,000 after the Edremit earthquake. In the area where the earthquakes occurred, almost all the reinforced concrete buildings were affected.This study presents field observations of damages on reinforced concrete buildings due to the consecutive earthquakes that occurred in Van, Turkey. Damages appearing in the buildings may occur due to several reasons such as site effect, poor construction quality, poor concrete strength, poor detailing in beam-column joints, detailing of stronger beam than column, soft stories, weak stories, inadequate reinforcement, short lap splices, incorrect end hook angle, and short columns. Aftershocks also caused progressive damages on the buildings within 17 days after the earthquakes. According to the results of this study, most of the damaged buildings were not designed and constructed according to the Turkish earthquake code, the so-called Specification for Buildings to be built in Seismic Zones.
AtıfScopus84WoS74OpenAlex92İncele - MakaleYalnız künye2011Scopus SJRQ1Modeling of triple concave friction pendulum bearings for seismic isolation of buildings
Yurdakul, Muhammet; Ates, Sevket
Seismic isolated building structures are examined in this study. The triple concave friction pendulum (TCFP) is used as a seismic isolation system which is easy to be manufactured and enduring more than traditional seismic isolation systems. In the TCFP, take advantage of weight which pendulum carrying and it's geometry in order to obtain desirable result of seismic isolation systems. These systems offer advantage to buildings which subject to severe earthquake. This is result of damping force of earthquake by means of their internal constructions, which consists of multiple surfaces. As the combinations of surfaces upon which sliding is occurring change, the stiffness and effective friction change accordingly. Additionally, the mentioned the TCFP is modeled as of a series arrangement of the three single concave friction pendulum (SCFP) bearings. A two dimensional- and eight- story of a building with and without isolation system are used in the time history analysis in order to investigate of the effectiveness of the seismic isolation systems on the buildings. Results are compared with each other to emphasize efficiency of the TCFP as a seismic isolation device against the other friction type isolation system like single and double concave surfaces. The values of the acceleration, floor displacement and isolator displacement obtained from the results by using different types of the isolation bearings are compared each other. As a result, the findings show that the TCFP bearings are more effective devices for isolation of the buildings against severe earthquakes.
AtıfScopus14OpenAlex12İncele - BildiriAçık Erişim2011Scopus SJRQ2Site-response effects on RC buildings isolated by triple concave friction pendulum bearings
Ates, Sevket; Yurdakul, Muhammet
The main object of this study is to evaluate the seismic response effects on a reinforced concrete building isolated by triple concave friction pendulum (TCFP) bearings. The site-response effects arise from the difference in the local soil conditions at the support points of the buildings. The local soil conditions are, therefore, considered as soft, medium and firm; separately. The results on the responses of the isolated building are compared with those of the non-isolated. The building model used in the time history analysis, which is a two-dimensional and eight-storey reinforced concrete building with and without the seismic isolation bearings and/or the local soil conditions, is composed of two-dimensional moment resisting frames for superstructure and of plane elements featuring plane-stress for substructure. The TCFP bearings for isolating the building are modelled as of a series arrangement of the three single concave friction pendulum (SCFP) bearings. In order to investigate the efficiency of both the seismic isolation bearings and the site-response effects on the buildings, the time history analyses are elaborately conducted. It is noted that the site-response effects are important for the isolated building constructed on soft, medium or firm type local foundation soil. The results of the analysis demonstrate that the siteresponse has significant effects on the response values of the structure-seismic isolation-foundation soil system.
AtıfScopus9OpenAlex7İncele
