Building Monitoring for Seismic Risk Assessment (II): Instrumental Testing of RC Frame Structures and Analytical Reinterpretation of Response Characteristics

Abstract eng:
A joint research program by the Bauhaus-Universität Weimar (Germany), Mustafa Kemal University (Turkey) and Middle East Technical University (Turkey) has been in progress since 2005. The project is concerned with vulnerability and loss estimation studies for the earthquake preparedness of Antakya (current population 200,000), sited on the Dead Sea Fault System in the Eastern Mediterranean, and in close proximity to the East Anatolian Fault System. The ancient town, founded in 300 BC, has been an important confluence of states, faiths and peoples from its earliest times, and has suffered many major earthquakes. The city of Antakya has experienced a rapid population growth during the last 25 years, and many new buildings have been built, generally displaying architectural and structural similarities. Forced vibration tests have been conducted on two eight-storey representative RC frame buildings. The excitation is provided via an eccentric mass vibration generator. Sweeping the frequency of the vibration generator through a range including the natural frequencies of the structure and then recording the steady-state response of the structure at each operated frequency, response resonance curves are obtained. For different locations of each building the acceleration and displacement amplitudes are determined. The experimental data are compared with analytical results from the 3D structural models and a good aggrement is obtained.

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