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System response analyses of base-isolated structures to earthquake ground motions

Conference ·
OSTI ID:5523683
;  [1];  [2]
  1. Argonne National Lab., IL (USA)
  2. Northern Illinois Univ., De Kalb, IL (USA)
+ Show Author Affiliations
Seismic isolation is one of the most significant earthquake engineering developments in recent years. This paper describes system response analyses of base-isolated structures to earthquake ground motions. Emphasis is placed on the adaptation of a nonlinear constitutive model for the elastomeric isolation bearing together with the treatment of foundation embedment for the soil-structure- interaction analysis. The constitutive model requires six input parameters derived from bearing experimental data under sinusoidal loading. The characteristic behavior of bearing, such as the variation of shear modulus and material damping with the change of maximum shear deformation, can be captured closely by the formulation. In the treatment of soil embedment a spring method is utilized to evaluate the foundation input motion as well as soil stiffness and damping. The above features have been incorporated into a three-dimensional system response program, SISEC, developed at Argonne National Laboratory (ANL) (Wang et al. 1991). Sample problems are presented to illustrate the relative response of isolated and unisolated structures. 5 refs., 7 figs.
Research Organization:
Argonne National Lab., IL (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5523683
Report Number(s):
ANL/CP-71314; CONF-910817--18; ON: DE91015685
Country of Publication:
United States
Language:
English

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Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200 -- Nuclear Reactor Technology-- Components & Accessories
220900* -- Nuclear Reactor Technology-- Reactor Safety
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CODES
COMPUTERIZED SIMULATION
EARTHQUAKES
ELASTOMERS
FINITE ELEMENT METHOD
GROUND MOTION
HYSTERESIS
MATHEMATICAL MODELS
MECHANICAL STRUCTURES
MECHANICAL VIBRATIONS
MOTION
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
NUMERICAL SOLUTION
POLYMERS
POWER PLANTS
REACTOR COMPONENTS
REACTOR SAFETY
REACTORS
S CODES
SAFETY
SEISMIC EFFECTS
SEISMIC EVENTS
SEISMIC ISOLATION
SHOCK ABSORBERS
SIMULATION
SOIL-STRUCTURE INTERACTIONS
THERMAL POWER PLANTS