Study Of Seismic Isolation Systems For Computer Floors

Study of seismic isolation systems for computer floors by v.

Study of seismic isolation systems for computer floors.

Constantinou state university of new york at buffalo department of civil engineering buffalo new york 14260 technical report nceer 94 0020 july 19 1994 this research was conducted at the state university of new york at buffalo. A numerical model of a seven storey building was employed to investigate the seismic response of the isolation floor in fourth storey. Delivery case studies of raised floor system. The nonstructural components equipment and or valuable building content is placed atop the secondary isolated floor system thereby decoupling the isolated component from the floor motion of the primary structural system.

Seismic floor isolation is achieved by isolating a secondary floor system from the primary structural floor using horizontally flexible elements called isolators. A computer floor system with raised floor and a generic slender equipment was constructed. An experimental study was performed to evaluate seismic reduction performance and the applicability of 2 dimensional floor isolation system to the main control room of a nuclear power plant. Two rmd models with different specifications and a viscous damper providing 10 percent of critical damping were applied in the study.

Seven ground motion records were selected from peer ground motion database. The seismic forces can be reduced substantialy while the operations of computers. The work described in this report concentrated on the development and testing of computer floor seismic isolation systems by utilizing devices of established effectiveness in the seismic isolation of buildings and shock isolation of military equipment. The mechanical properties of the isolated floor system are also obtained in terms of the acceleration displacement relationship which provides the foundation to better simulate these isolated floor systems in future parametric studies.