Same from 1992! Report on the disaster of the century from the scientists of 6 universities
After the devastating earthquakes in Kahramanmaraş, which occurred on February 6 and affected 11 provinces, scientists from Karadeniz Technical University (KTU), Düzce University, Sakarya University, Sakarya University of Applied Sciences, Sivas Cumhuriyet University and Giresun University came together to work on the field in earthquake zones. did the research.
After the research, an evaluation report containing the aftershocks, field observations, structural damages and forward-looking recommendations of this pair of earthquakes with magnitudes of 7.7 and 7.6 was prepared.
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SAME FROM 1992
In the report, it was revealed that in the field studies in the provinces destroyed by the earthquakes, the damage types and formation mechanisms detected after the devastating earthquakes that took place in Turkey since 1992 are almost the same.
BAD LABOR
In the report; «Inadequate concrete quality, use of non-ribbed (flat) reinforcement, construction on unsuitable floors, design of the carrier system as hollow floor slabs, heavy cantilever protrusions, and stores/shops with a high storey height on the lower floors of the buildings have been identified as the main causes of damage in reinforced concrete buildings. Inadequate material properties of the binder and masonry units, weak load-bearing walls due to the lack of beam and lintel, and inappropriate connection details were determined as the main causes of the damages. Poor workmanship and lack of application details in reinforced concrete and masonry structures caused the development and progression of the damages.
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«IMMEDIATELY NECESSARY»
While it is stated that the high number of collapsed structures in the earthquake is due to the insufficient functioning of the control mechanism; The report also noted:
«It has been determined that restoration works have not been carried out appropriately in our historical artifacts, most of which were damaged after the earthquake and that connect the past to the present. Especially in the relevant committees, the lack of civil engineers in the evaluation of the suitability of the prepared projects and the inability to operate the control mechanism sufficiently have emerged as the biggest causes of the damage. It is possible and unavoidable that earthquakes of a magnitude that can cause loss of life and property in a region at any time will occur.Therefore, within the scope of earthquake resistant structure design, both the appropriate design of the new buildings to be built and the preparation of our existing buildings for earthquakes are urgently required. It is very important to support the widespread use of new construction technologies such as construction health monitoring systems, seismic isolators, fibrous polymer composite fabrics, 3D printers, light steel and wood in our country.»
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Scientists from six universities in Turkey conducted field studies in earthquake zones affected by the devastating earthquakes in Kahramanmaraş on February 6. The research revealed that the damage types and formation mechanisms detected are almost the same as those observed in previous earthquakes since 1992, and identified inadequate construction quality, unsuitable floors, and poor workmanship as the main causes of damage in reinforced concrete buildings. The report called for urgent action to prepare both new and existing buildings for earthquakes, and to support the widespread use of new construction technologies in the country, such as seismic isolators, fibrous polymer composite fabrics, and 3D printers. The report also highlighted that the high number of collapsed structures in the earthquake is due to the insufficient functioning of the control mechanism and restoration works not being carried out appropriately in historical artifacts.
