Assessment Of Slope Movements, Damages On Buildings, Site Effects And Liquefaction Failures Of The 12 November 1999 Duzce Earthquake (Mw=7.2) In Vicinity Of Efteni Lake Area (Duzce-Turkey)
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Date
2017
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BGJ Consulting
Abstract
"Duzce Province, in the Western Black Sea Region of Turkey, is in a tectonically active location that is particularly affected by the northern branch of the North Anatolian Fault Zone. The 12 November 1999 Duzce earthquake (MW of 7.2) caused huge destruction and loss of life in the provincial capıtal city of Duzce and the surrounding villages. This study presents a field survey and assessment of the building damage that occurred in the vicinity of the Efteni Lake area of the province. Site effects, poor construction quality, soft and weak soil, soil liquefaction, liquefaction-induced settlement and inappropriate selection of residential areas were considered as contributing factors. Using the deterministic approach, earthquake magnitudes obtained from local seismicity were used to determine the liquefaction-induced settlement, site effects and soil amplifications and to detect building damage for several earthquake parameters. Magnitudes were estimated via deterministic seismic risk analysis for a model of the North Anatolian Fault Zone with two different rupture lengths (fault lengths of 36 and 74 km), and the earthquake magnitudes and accelerations were calculated. The local fault length was considered alternatively as 6.9 and 7.2 for magnitude and 0.42g and 0.52 g for acceleration. The soil liquefaction potential index (LPI), the liquefaction-induced soil settlement, site effects and soil amplification were estimated according to local seismicity. It was established that most of the damaged buildings were not suitable for residential areas and were not designed or constructed in accordance with the Turkish earthquake code."
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Ateş A., Onur Uğur L., Akbiyikli R., Polat H., Keskin I., Assessment Of Slope Movements, Damages On Buildings, Site Effects And Liquefaction Failures Of The 12 November 1999 Duzce Earthquake (Mw=7.2) In Vicinity Of Efteni Lake Area (Duzce-Turkey), [in:] Journal of Current Construction Issues. CIVIL ENGINEERING PRESENT PROBLEMS, INNOVATIVE SOLUTIONS - Optimization in Business and Engineering, ed. Jarosław Górecki, BGJ Consulting, 2017