SEISMIC ANALYSIS OF STRUCTURE ON SLOPING GROUND USING CLAY AND CEMENT INFILL

RC frames with masonry infill walls are a common practice in countries like India, where the region is prone to seismic activity. Generally the masonry infill walls are treated as nonstructural part in structural study and role of its mass is well - thought - out and it's structural feature like strength and rigidity is not measured. The structures in from top to bottom seismi c areas are mostly vulnerable to plain damages. Apart from the gravity load structure has to endure to lateral load which also develop high stresses. Now day's reinforced concrete frames are used in building structure practice around the globe. The vertica l gap in reinforced concrete frames i.e. formed by the columns and beams are commonly filled in by brick or masonry and it is discussed as brick infill wall or panels. Now the construction of frame is done, these walls are built of brunt clay bricks in cem ent mortar.It are well known to us that masonry infills, though non - engineered and term as non - structural, may provide maximum of the earthquake resistance and prevent collapse of weak RC structures. The aim of this study is to concentrate the impact of b rick work infills on reinforced concrete frames subjected to seismic force mainly in zone II and zone V. For this purpose an equivalent discrete shear - type model with seven storeys is taken and two cases were taken into account i.e. with and without infill s. The adopted mathematical model was proved by comparing numerical and test results. They show of a maximum number of different reinforced concrete three bay - frames, bare and infilled, subjected to ten ground motion was study. The wide ranges of behavior are taken into account want to create response spectra for numerous significant parameters characterizing the nature of bare and infilled frames. Moreover, infills, if shows in all storeys, provide a important contribution to the energy dissipation capacit y, decreasing the dissipation energy demands in frame elements and decreasing significantly the maximum displacements. It shows the influence of masonry is of great importance, even though strongly depending on the feature of the ground motion, especially for non - seismic frames, which have a lower capacity of dissipating energy than the seismic ones.