Analysis of Seismic Soil-Structure Interaction for a Nuclear Power Plant (HTR-10). (13th June 2017)

• Record Type: Journal Article
• Authors: Wang, Xiaoxin; Zhou, Qin; Zhu, Kaixin; Shi, Li; Li, Xiaotian; Wang, Haitao
• Other Names: Ojovan Michael I. Academic Editor.
• Is Part Of: Science and technology of nuclear installations. Volume 2017(2017)
• Publication Date: 2017-06-13
• Subjects: Nuclear engineering -- Periodicals; Nuclear facilities -- Periodicals; Nuclear engineering; Nuclear facilities; Electronic journals; Periodicals; 621.48
• DOI: 10.1155/2017/2358403
• Languages: English
• ISSNs: 1687-6075

Abstract

Abstract : The response of nuclear power plants (NPPs) to seismic events is affected by soil-structure interactions (SSI). In the present paper, a finite element (FE) model with transmitting boundaries is used to analyse the SSI effect on the response of NPP buildings subjected to vertically incident seismic excitation. Analysis parameters that affect the accuracy of the calculations, including the dimension of the domain and artificial boundary types, are investigated through a set of models. A numerical SSI analysis for the 10 MW High Temperature Gas Cooled Test Reactor (HTR-10) under seismic excitation was carried out using the developed model. The floor response spectra (FRS) produced by the SSI analysis are compared with a fixed-base model to investigate the SSI effect on the dynamic response of the reactor building. The results show that the FRS at foundation level are reduced and those at higher floor levels are altered significantly when taking SSI into account. The peak frequencies of the FRS are reduced due to the SSI, whereas the acceleration at high floor levels is increased at a certain frequency range. The seismic response of the primary system components, however, is reduced by the analysed SSI for the HTR-10 on the current soil site.