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Post Turkey Earthquake - Day 2: City Center of Van
Today Rafael and I visited the City Center of Von. It was known to have less damage than the City of Ercis, but we wanted to make sure that we covered all of the main cities surrounding the epicenter. We had difficulty with transportation, so we met a Kurdish cab driver and asked him to be our driver/guide for the next couple of days. All in all, it was a very informative trip. For buildings that remained erect, there were few cases where the concrete frame suffered visible damage. In fact, the majority of buildings had slippage at the infill/frame interface with some walls developing diagonal cracks.Photo #1: Degenkolb Alumni, Rafael Alaluf, eating rice soup/bread for breakfast courtesy of the University cafeteria.Photo #2: Courthouse/District Governor’s building in Van. It performed very well with no visible damage at the perimeter.Photo #3: Damage at the seismic separation of a 50-year state children's hospital. There was mostly frame/infill interface cracking with little to no visible structural damage. The children's hospital had been evacuated. Photo #4: Turkije Bankasi (Bank of Turkey). The building had recently completed a seismic retrofit within the last year and performed very well. The ATM machines were operable.Photo #5: A 1m (3 foot) thick mat foundation with nicely spaced top/bottom reinforcing mat. The mat was founded approximately 3 stories below grade. The excavation was supported by shoring piles and tiebacks. No appreciable movement of the shoring system was visible.Photo #6: Nonstructural damage at the bottom of a concrete beam in a 50-year old school. The plaster was approximately 6cm (2.4 inches) thick. Photo #7: End gable out-of-plane collapse in an 10-year old school. Note the extent of debris from the face of the building.Photo #8: A Social Security owned-building that was under retrofit construction while the earthquake struck. The forms and epoxy dowels were placed, but no concrete had been poured. There were some retrofit walls that had been completed, but no structure damage was visible.Photo #9: A Social Security Administration building that did not appear to have significant damage. However , we observed two columns that had underwent possible shear failure. Photo #10: An interior column at the Social Security Administration building. Note the use of smooth bars. The ties are approximately at 20cm (8 inches).Photo #11: Out-of-plane failure of a infill wall along the corridor of the Social Security Administration building.Photo #12: A short column at a local mosque. We could not identify if the crack continued through the column.Photo #13: The first story of a residential complex. Not the tie beam along at the first story that are not tied to the diaphragm. The columns appear to be creating a soft-story condition.Photo #14: A canopy at a local mosque. See Photo 15 for a close-up of the connection.Photo #15: Close-up of the canopy connection to the existing wall. It appears to a dowel, not necessarily epoxied, that is hammed into the infill and then welded to the steel. We observed this condition another time at the fire escape of the government building.Photo #16: Van’s newest state hospital. The building performed exceptionally well with only minor infill wall cracking scattered throughout the building and minor façade damage in one location.Photo #17: Van Kalesi is a castle ruin dating back to the 9th century BC. Photo #18: The only major damage at the minaret of a mosque at the City of Van that we observed.
Filed Under: Degenkolb, Earthquake
Posted by noblestudios on October 28, 2011 5:00 PM
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