IS0 22762-3:2005 pdf download

IS0 22762-3:2005 pdf download.Elastomeric seismic-protection isolators - Part 3: Applications for buildings -specifications.

— breaking
rupture of elastomeric isolator due to compression (or tension)-shear loading
3.2
buckling
state when elastomenc isoiators lose their stability under compressive-shear loading
compressive properties of elastomeric isolator
compressive stiffness ( K ) for all types of rubber bearings
3.4
compressiveshear testing machine
machine used to test elastomeric isoiators, which has the capability of shear loading under constant compressive load
cover rubber
rubber wrapped around the outside of inner rubber and reiiforcing steel plates before or after curing of elastomeric isolators for the purpose of protecting the inner rubber from detefloration due to oxygen. ultraviolet rays and other natural elements and protecting the reinforcing plates from corrosion
design compressive stress
long-term compressive force on the elastonieric isolator imposed by the structure
3.7
effective loaded area
area sustaining vertical load in elastomenc isolators. which corresponds to the area of reinforcing steel plates
3.8
effective width
:rectangular elastomeric Isolator) the smaller of the two side lengths of inner rubber to which direction shear displacement is not restricted
3.9
elastomeric isolator
rubber bearing, for seismic isolation of buildings, bridges and other structures, which consists of multi-layered vulcanized rubber sheets and reinforcing steel plates
NOTE Types of sud’ Isolators include h.gh.damping rubber bearings, bieav natur rubber beanngs and lead rubber beanngs.
3.10
first shape factor
ratio of effectively loaded area to free deformation area of one inner rubber layer between steel plates
high-damping rubber bearing
HDR
elastomeric isolator with relatively high-damping properties obtained by special compounding of the rubber and the use of additives.