Dynamic Response of Bridges and Earthquake Response of Building-Foundation Systems

摘要

The research report in the thesis envisages the dynamic response of bridges to moving loads and seismic response of building foundation systems to earthquake motion. The dynamic response is studied due to a moving force and moving load. The response is studied in the form of dynamic coefficient for various parameters, and from the results it is seen that the speed parameter and unsprung and sprung parts of the vehicle affect the dynamic coefficient. With reference to response of building foundation system, a method is presented in which the building is embedded into an elastic foundation medium. The importance of considering the foundation medium as an integral part of the structural systems has been brought out, since the flexible foundation medium can attenuate or amplify the flexural response of the building.