Soil Dominant Period and Resonance Relation of Building Height

In this study, the relationship of dominant period between soil-structure interactions was investigated to determine the resonance period intervals of buildings. The signal analysis were applied to determine the resonance regions between building periods, T, and soil periods, TZ with (0 and 2) seconds. Earthquake resonance effectivity curves were obtained for soil classification. Turning points of earthquake resonance effectivity curves were defined characteristic periodes (TA – TB). According to this signal analysis, soil interval period between T= (0.5-1.5) TZ seconds becomes the building store number resonance risk region. Building store number curves of resonance region which changes as the function of the soil dominant period were obtained by using the relation between the building natural period and the store number or building height. Building store number curves of resonance region which changes as the function of the building rigidity were also obtained by using the same properties. In determination of resonance risk region; 1- application according to rigidity code values, 2- application according to different rigidity code values and building height, 3- Application for the control of soil-building resonance relationship of old buildings were given. In conclusion, if the dominant periods of soils are known, store number and the height of the building designed could be determined as practical from the resonance region curves. This application is useful simple method for the estimation of the soil-structure interaction during the earthquake. Also, in this study, different approaches in the calculations of soils dominant period for different layer thicknesses and the earthquake resonance relationships of buildings were discussed. In this context, for calculation of dominant period, it is shown that total depth of the layer should be used 50 meters according to the disaster regulations and surface wave active depth