اصل و ترجمه مقاله لاتین Cardiac responses to exercise in competitive child cyclistsDETERMINATION OF SOIL-STRUCTURE INTERACTION EFFECTS FOR A MODEL TEST STRUCTURE USING PARAMETRIC SYSTEM IDENTIFICATION PROCEDURES

DETERMINATION OF SOIL-STRUCTURE INTERACTION EFFECTS FOR A MODEL TEST STRUCTURE USING PARAMETRIC SYSTEM IDENTIFICATION PROCEDURES Abstract Earthquake recordings from a model test structure located at Garner Valley California are used to evaluate inertial soil-structure interaction (SSI) effects. The test structure consists of steel columns and bracings 4.06 m in height supporting a 4m x 4m x 0.4m reinforced concrete roof slab. The structure rests on a 4m x 4m x 0.5m reinforced concrete foundation with no embedment. Surficial soil conditions consist of organic soil overlying silty sand alluvium with an average shear wave velocity in the upper 15 m of 200m/s. Seismic monitoring is performed with uni-axial (horizontal) accelerometers on the roof and foundation as well as vertical sensors at the corners of the foundation. Parametric system identification procedures are implemented to evaluate fundamental-mode vibration frequencies for a fixed- and flexible-base condition, from which SSI ef …