NONLINEAR STATIC AND DYNAMIC ANALYSIS OF A TYPICAL MASONRY BUILDING IN PALMOTIĆEVA STREET IN ZAGREB

In this study, nonlinear static pushover and dynamic time-history analyses of a typical masonry building situated on Palmotićeva street in downtown Zagreb were performed. The building was erected in 1922 before any seismic codes were introduced in practice. It has a basement, four stories, an attic (total height equal to ca. 23m), and an asymmetric plan consisting of two connected parts: a street part (24.4x12 m) and a courtyard part (10.6x12 m). The floor structure consists mainly of wooden beams except above the basement, where the RC slab was installed. The solid brick masonry walls with variable thicknesses (15-90 cm) are evenly distributed in both directions. Two numerical macro-models were created employing Diana 10.4. Engineering masonry constitutive law was used to describe the highly nonlinear behavior of masonry walls which can crush, crack or fail in shear. Three numerical models were created describing the current damaged state and the possible strengthening with rigid floor diaphragms. The response of the building was assessed in terms of capacity curves, inter-story drifts, and cracking patterns.