Damages on reinforced concrete buildings due to consecutive earthquakes in Van

Abstract 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.

[1]  George D. Hatzigeorgiou,et al.  Nonlinear behaviour of RC frames under repeated strong ground motions , 2010 .

[2]  Halil Sezen,et al.  Seismic performance of masonry buildings during the 2007 Bala, Turkey earthquakes , 2012, Natural Hazards.

[3]  Alemdar Bayraktar,et al.  Damages of masonry buildings during the July 2, 2004 Doğubayazıt (Ağrı) earthquake in Turkey , 2007 .

[4]  Michel Bruneau,et al.  Performance of structures during the 1992 Erzincan earthquake , 1993 .

[5]  M. H. Arslan,et al.  What is to be learned from damage and failure of reinforced concrete structures during recent earthquakes in Turkey , 2007 .

[6]  S. Adanur,et al.  Performance of masonry buildings during the 20 and 27 December 2007 Bala (Ankara) earthquakes in Turkey , 2010 .

[7]  Aral I. Okay,et al.  An active, deep marine strike‐slip basin along the North Anatolian fault in Turkey , 1999 .

[8]  Eiichi Watanabe,et al.  Performances and damages to steel structures during the 1995 Hyogoken-Nanbu earthquake , 1998 .

[9]  Michel Bruneau,et al.  Building damage from the Marmara, Turkey earthquake of August 17, 1999 , 2002 .

[10]  Alper Ilki,et al.  Failures of masonry and concrete buildings during the March 8, 2010 Kovancılar and Palu (Elazığ) Earthquakes in Turkey , 2011 .

[11]  George D. Hatzigeorgiou,et al.  Inelastic displacement ratios for SDOF structures subjected to repeated earthquakes , 2009 .

[12]  Durgesh C. Rai,et al.  Performance of harbour structures in Andaman Islands during 2004 Sumatra earthquake , 2008 .

[13]  George D. Hatzigeorgiou,et al.  Ductility demand spectra for multiple near- and far-fault earthquakes , 2010 .

[14]  Adem Doǧangün,et al.  Performance of reinforced concrete buildings during the May 1, 2003 Bingöl Earthquake in Turkey , 2004 .

[15]  George D. Hatzigeorgiou,et al.  Structural pounding between adjacent buildings subjected to strong ground motions. Part II: The effect of multiple earthquakes , 2013 .

[16]  Alemdar Bayraktar,et al.  Performance of Masonry Stone Buildings during the March 25 and 28, 2004 Aşkale (Erzurum) Earthquakes in Turkey , 2007 .

[17]  George D. Hatzigeorgiou,et al.  Behavior factors for nonlinear structures subjected to multiple near-fault earthquakes , 2010 .

[18]  G. D. Hatzigeorgiou.  DUCTILITY DEMANDS CONTROL UNDER REPEATED EARTHQUAKES USING APPROPRIATE FORCE REDUCTION FACTORS , 2010 .

[19]  George D. Hatzigeorgiou,et al.  Investigation of story ductility demands of inelastic concrete frames subjected to repeated earthquakes , 2013 .

[20]  D. Loulelis,et al.  Moment resisting steel frames under repeated earthquakes , 2012 .

[21]  Dimitri Beskos,et al.  A Simple Concrete Damage Model for Dynamic FEM Applications , 2001, Int. J. Comput. Eng. Sci..

[22]  Andrew S. Whittaker,et al.  Performance of reinforced concrete buildings during the August 17, 1999 Kocaeli, Turkey earthquake, and seismic design and construction practise in Turkey , 2003 .