STUDY ON SEISMIC RESPONSE CONTROL SYSTEM FOR HEAVY, RIGID BUILDINGS OF REINFORCED CONCRETE: PART-2 INFLUENCE OF DIVERSIFICATION OF DESIGN FACTORS ON SEISMIC RESPONSE

摘要

A series of dynamic analyses for "a seismic response control building with soft upper steel frame", introduced in Part-1, is pertbrmed in order to investigate the influence of the diversification of design factors listed below. From these analyses, the influence of each factor has been evaluated as follows: 1. the velocity of S-wave, 'Vs' of a support rock ground: the decrease of Vs yields greater responses at upper steel frames 2. earthquake input waves: responses of the structure caused by all waves studied are within the design criteria 3. weight of the roof: as the weight decreases the overturning moment of the building increases 4. yielding shear force of the steel frame: considering non-linearity, the force on the viscous dampers decreases but the response of the structure remains the same as in the linear case 5. rigidity (compressive strength) of concrete: little influence on the responses 6. thickness of the outer box wall: the overturning moment increases a little, but this change contributes to decrease the response of the reinforced concrete containment vessel Through these analyses, the seismic reponse controlled reactor building demonstrated enough aseismatic capacity against each of the parameters considered in this study.