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Date of Publication:2022-10-09

Journal:自然灾害学报

Affiliation of Author(s):建设工程学部

Volume:26

Issue:4

Page Number:29-38

ISSN No.:1004-4574

Abstract:In view of evaluation about the effect of base isolation on the seismic
   performance of the nuclear power plant building,this paper,for the first
   time,explores division of seismic performance indexes of nuclear power
   plant auxiliary building,establishes numerical model of isolated and
   non-isolated nuclear power plant building on hard soil ground,obtains
   vulnerability curves based on IDA and MAS methods respectively,carries
   out seismic vulnerability comparative study of isolated and non-isolated
   structures based on the indexes and demonstrates the higher
   anti-collapse safety reserve of the isolation measure. The results show
   that: the results obtained by the two methods are basically
   consistent,which proves the rationality of the results. Isolation
   bearing can significantly reduce the failure probability of nuclear
   power plant building and maximum of decrease amplitude can reach 23%,and
   collapse probability of isolated factory building under major earthquake
   can reduce 80% than that of non-isolated factory building. The safety
   reserve coefficient is increased by 11% and failure probability of
   concrete plays a controlling role in the overall failure probability of
   the two kinds of factory building.

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