Dynamic shaker testing of a ten-story reinforced concrete building

Dynamic shaker tests were performed on a ten-story concrete infilled RC frame structure to obtain its dynamic properties and their changes due to the damage introduced during the tests. The test structure was extensively instrumented using an array of 60 accelerometers which were installed at two opposite corners of each floor slab except for the roof. An eccentric mass shaker was installed over the second story slab to produce harmonic excitations along the two horizontal directions and at a 45-degree angle between those. A total of 87 forced vibration excitations were performed and 52 hours of ambient vibrations were recorded during the testing period. Moreover, during the wall demolition process, free vibration responses of the structure due to the impulses imposed by a jack hammer used for infill demolition were recorded.