Research Articles | Challenge Journal of Structural Mechanics

Earthquake performance of collapsed school building under Van-Tabanli (Mw=7.2) earthquake

Cumhur Cosgun, Atakan Mangir


DOI: https://doi.org/10.20528/cjsmec.2018.04.004
View Counter: Abstract | 1010 times | ‒ Full Article | 333 times |

Full Text:

PDF

Abstract


A majority of the present building stock of Turkey is under seismic risk. It is believed that a significant proportion of the existing structures will either collapse or will get heavily damaged during a possible strong earthquake. With this respect, as an initial stage in the betterment of the structurally deficient building stock, assessment of existing buildings is of vital importance. From this viewpoint, in this study, earthquake performance of a collapsed school building was investigated through numerical performance analysis based on codified rules. At the end of 2011, numerous ground motions of various intensities have been registered in city of Van in eastern Turkey starting from 23 October 2011. Two major earthquakes were experienced at the Tabanli and Edremit district of Van. The moment magnitudes of these earthquakes were announced as 7.2 and 5.6, respectively. The investigated school building in this study was located in the city of Van and collapsed after first major earthquake (Mw=7.2). Structural details of the load-bearing members of the investigated building including as-built drawings and specified material properties were obtained. Based on obtained data, a numerical model was created to simulate the behavior of the building under code specified earthquake effects. Earthquake performance assessment of the structure was carried based on the recommendations given in the related chapter of the Turkish Seismic Code. Pushover analyses were performed and expected member by member damage levels and overall structural damage were determined in accordance with Turkish Seismic Code. The results are discussed to enlighten the actual cause of the collapse.


Keywords


collapsed school building; earthquake performance; nonlinear static analysis; damage evaluation

References


AFAD (n.d.). Turkish Prime Ministry Disaster and Emergency Management Presidency. Retrieved from http://www.afad.gov.tr

Bedirhanoglu I, Ilki A, Pujol S, Kumbasar N (2010). Behavior of deficient joints with plain bars and low-strength concrete. ACI Structural Journal, 107(3), 300–310.

Carvalho G, Bento R, Bhatt C (2013). Nonlinear static and dynamic analyses of reinforced concrete buildings – comparison of different modelling approaches. Earthquakes and Structures, An Int’l Journal, 4(5), 451–470.

Cosgun C, Dindar AA, Seckin E, Onen Y (2013). Analysis of building damage caused by earthquake in Eastern Turkey. Gradevinar, 65(8), 743–752.

CSI (2016). SAP2000. Analysis Reference Manual. CSI: Berkeley (CA, USA): Computers and Structures INC.

Ilki A, Demir C, Bedirhanoglu I, Kumbasar N (2009). Seismic retrofit of brittle and low strength RC columns using fiber reinforced polymer and cementitious composites. Advances in Structural Engineering, 12(3), 325–347.

IMBSEN software systems (2004). XTRACT V3.0.1.: Cross sectional structural analysis of components.

Inel M, Meral E (2016). Seismic performance of RC buildings subjected to past earthquakes in Turkey. Eartquakes and Structures, An Int’l Journal, 11(3), 483–503.

Isik E, Kutanis M (2015). Performance based assessment for existing residential buildings in Lake Van basin and seismicity of the region. Earthquakes and Structures, An Int’l Journal, 9(4), 893–910.

Mander JB, Priestley MJN, Park R (1988). Observed stress‐strain behavior of confined concrete. Journal of Structural Engineering, 114(8), 1827–1849.

Ni P (2014). Seismic assessment and retrofitting of existing structure based on nonlinear static analysis. Structural Engineering and Mechanics, 49(5), 631–644.

Palermo P, Hernandez RR, Mazzoni S, Trombetti T (2014). On the seismic behavior of a reinforced concrete building with masonry infills collapsed during the 2009 L’Aquila earthquake. Earthquakes and Structures, An Int’l Journal, 6(1), 45–69.

Tapan M, Comert M, Demir C, Sayan Y, Orakcal K, Ilki A (2013). Failures of structures during the October 23, 2011 Tabanlı (Van) and November 9, 2011 Edremit (Van) earthquakes in Turkey. Engineering Failure Analysis, 34, 606–628.

TSC (2007). Turkish Earthquake Resistant Design Code (TSC). Ministry of Public Works and Settlement. Ankara.

Turk M, Comert M, Cosgun C (2013). Seismic upgrade of RC buildings using CFRP sheets. Gradevinar, 65(5), 435–448.

Yön B, Sayın E, Köksal TS (2013). Seismic response of buildings during the May 19, 2011 Simav, Turkey earthquake. Earthquakes and Structures, An Int’l Journal, 5(3), 343–357.


Refbacks

  • There are currently no refbacks.