ISO 23618:2022 構造物の設計の基礎 ～免震構造の一般原則～ | ページ 6

3.1.1

上部構造

免震界面より上の構造部分

3.1.2

免震インターフェース

上部工と下部工の間に免震装置を設置するスペース

3.1.3

下部構造

免震界面下の構造部分

3.1.4

財団

直接基礎、杭基礎、マット基礎、堀壁などの下部工の最下部

3.2.1

seismic isolation system

collection of seismic isolation devices arranged over the seismic isolation interface

3.2.2

isolator

device installed between a substructure and a superstructure that supports the weight of the superstructure, provides lateral mainly and some vertical flexibility, and can have a capacity to dissipate energy and re-centring capability

Note 1 to entry: See Annex A.

3.2.3

hysteretic damper

device having the capacity to dissipate energy by the relationship between resistance force and deformation

Note 1 to entry: See Annex A.

3.2.4

fluid damper

device having the capacity to dissipate energy by the relationship between resistance force of fluid and velocity

Note 1 to entry: See Annex A.

3.2.5

isolation gap

horizontal or vertical space (clearance) between the structure and the moat wall, or the space between adjacent structures in which the structure is free to move sideways without contacting the surrounding structure

3.2.6

scratch plate

metal plate and probe recording the relative movement between a substructure and a superstructure by marking scratches

3.2.7

equipment in isolation interface

equipment connecting the superstructure and the substructure, such as piping and wiring

3.3.1

design response spectrum

spectrum used for the design of seismically isolated structure as a function of the fundamental period of the structure

3.3.2

design earthquake ground motion

earthquake ground motion used for the design of seismically isolated structure in response history analysis

3.3.3

effective stiffness

secant stiffness obtained by dividing the peak force of isolation system or an isolation device by the corresponding displacement

3.3.4

effective damping

equivalent viscous damping corresponding to the energy dissipation of the isolation system or an isolation device

3.3.5

equivalent linear system

system to evaluate the maximum response of a seismically isolated structure based on the response spectrum using effective stiffness and effective damping of the isolation system

3.3.6

response spectrum analysis

calculation method to evaluate the maximum response of a seismically isolated structure under earthquake ground motions based on the response spectrum

3.3.7

response history analysis

calculation method to evaluate the time history response of a seismically isolated structure under earthquake ground motions

3.4.1

warning signage

signboard to give notice the danger of the movement of the seismically isolated structure during an earthquake

3.4.2

type test

test to validate material properties and performance of isolation products

Note 1 to entry: See ISO 22762-1 for elastomeric bearings.

3.4.3

routine test

test for quality control of isolation products

Note 1 to entry: See ISO 22762-1 for elastomeric bearings.

3.4.4

base plate

steel plate which connects an isolator to the superstructure and the substructure with bolts

3.4.5

construction clearance

isolation gap considering the construction error which is generally wider than the design clearance

3.4.6

creep

permanent deformation induced by long-term compressive load on isolators, especially rubber bearings

3.4.7

design clearance

isolation gap decided by the SE in the design stage, where horizontal clearance is decided based on the maximum response displacement at an isolation interface and vertical clearance is decided considering creep deformation and short-term compressive deformation of isolators

3.4.8

inspection at completion

inspection conducted when the building construction is completed

3.4.9

inspection under construction

inspection conducted immediately after the isolation interface is constructed