On the mechanical behaviour of masonry infilled RC frames, with and without openings, subjected to simultaneous in-plane (IP) and out-of-plane (OoP) loading.

Autor: Anić, Filip, Penava, Davorin, Abrahamczyk, Lars, Sarhosis, Vasilis
Předmět:
Zdroj: Bulletin of Earthquake Engineering; Mar2024, Vol. 22 Issue 4, p1775-1799, 25p
Abstrakt: The behaviour of masonry infilled RC frames, with and without openings, subjected to both in-plane (IP) and out-of-plane (OoP) shear loading, indicates the most unfavourable shear (seismic) design condition. A series of calibrated computational micromodels of previously tested 1/2.5 scaled single-bay and single-story RC frames with masonry infill walls, were employed to investigate the effect of openings of various type, size and position, on structure's shear resistance under different IP and OoP load combinations. The load combination was characterised by an angle α of the IP (or OoP) resultant force, ranging from 0° to 90°. Considered were walls with centrically or eccentrically positioned door or window opening, of an opening to wall area ratio Ao/Ai = 0.1–0.3, walls without openings, and frame without wall i.e. bare frame. A total of 252 models were considered. The obtained behaviour revealed the specific load resisting mechanisms and accompanying failure modes. The IP–OoP shear resistance interaction curves and surfaces were constructed with regard to load direction α and opening to wall area ratio Ao/Ai. Considering these criteria, the IP–OoP shear resistance estimation functions were derived in order to improve the existing shear (seismic) design methodologies of masonry infilled RC frames. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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