بررسي رفتار لرزه يي اتاق آجري محصور با كلاف

SHAKING TABLE STUDY OF A CONFINED BRICK MASONRY BUILDING

A single storey, full-scale unreinforced confined brick masonry building was designed, based on Standard No. 2800 of IRAN, and constructed on the shaking table at the Earthquake Engineering Research Center, EERC, of Sharif University of Technology. The model consisted of a vertical reinforced concrete tie column and horizon­tal steel bond beams and had a jack-arch roof system. The walls had openings of different dimensions, making it possible to investigate the effects of the shape, geom­etry and location of the openings. The model was sub­jected to some seismic experiments, consisting of scaled records of the Bam, Tabas and Elcentro earthquakes as well as harmonic acceleration with a gradually increas­ing amplitude. The insults indicated that the proper workmanship of ties, especially the proper connection of tie columns and bond beams, plays an important role in the integrity and stability of the structure The creep of the masonry walls and subsequent reduction in fric- tional resistance between the -walls and steel bond beams were effective on the out.-of-plane failure of the brick walls.