Seismic Behaviour of RC Frames Infilled With Different Techniques

Abstract eng:
Besides their primary implementation as heat isolation and partitioning off the living space, infill walls have great potential to influence building response during seismic excitation. Affecting the infilled RC building stock of Turkey, Mw 7.4 Kocaeli (1999) and Mw=7.1 Van (2011) earthquakes have shown that “non-structural” infill walls might be very critical for vertical stability of buildings under severe earthquakes and their performance is important in determination of global building performance especially under moderate earthquakes. In order to better understand infilled frame response, to determine performance levels for the infill walls and to enhance seismic resistance via new materials and various infill wall construction techniques; cyclic tests on 8 half scale, single RC frames were conducted in METU Structural Mechanics Laboratories. Namely, bare frame (B), infilled frame (I), infilled frame with plaster (P), infilled frame with steel mesh reinforced plaster (MRP) locking brick infilled frame with horizontal slip layer (LB), infilled frame separated with horizontal steel plates (HSP), auto aerated concrete infilled frame (AAC), AAC infilled frame with fiberglass mesh reinforced plaster (AACP) were tested. Investigation and comparison of damage patterns, performances and contributions of infill walls to global response are presented.

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