Effect of infills on the global behaviour of R/C frames : Energy considerations from pseudodynamic tests
A series of pseudodynamic tests was conducted on a full-scale four-storey reinforced concrete building designed according to Eurocodes 2 and 8. The building was 10 m long by 10 m wide, and was 12.5 m high. It was designed as a ductility class "High" structure, for typical live loads and for a peak ground acceleration of 0.3 g and medium soil conditions. A first test was conducted on the bare frame to assess the adequacy of the damage indicators to be used in the calibration of Eurocode 8. The structure performed as expected. The pattern of the measured rotations was that of a weak-beam, strong-column mechanism. A second experimental programme was conducted to study the influence of masonry infill panels on the global behaviour of the frame. A test was performed by infilling the two external frames with hollow brick masonry in all four storeys (uniform infill distribution). The test was then repeated on the structure without infills at the first storey, to create a soft-storey effect. The input signal was the same as in the tests on the bare frame. The objective of the tests was to study the effects of the different lay-out of infills, as well as to calibrate the computer models for the infills to be used in parametric analyses. The test results are presented and the performances of the structure with different infill configurations are compared. The global behaviour of the structure is compared with the predictions which could have been made with simplified approaches.
Bibliographic Reference: Article: Earthquake Engineering and Structural Dynamics (1995)
Record Number: 199511161 / Last updated on: 1995-08-23
Original language: en
Available languages: en