结构工程师2025，Vol.41Issue(4)：80-90,11.DOI:10.15935/j.cnki.jggcs.202504.0010
非岩性地基钍基熔盐堆厂房楼层反应谱分析与优化
Analysis and Optimization of Floor Response Spectra of Thorium-based Molten Salt Reactor Buildings Built on Non-Lithological Foundations
摘要
Abstract
A hybrid simulation method for artificial seismic waves was developed to match target response spectra while enveloping specified power spectral densities.The equivalent stress magnitudes and orientations on five artificial boundary surfaces were quantified under both horizontal and vertical seismic excitations.Soil response analyses were conducted using EERA software to compute free-field seismic motions at varying depths.A finite element model integrating the thorium-based molten salt reactor(TMSR)building with underlying soil strata was established,and seismic response analyses incorporating soil-structure interaction(SSI)effects were performed.Additionally,a vertical floor response spectrum(VFRS)optimization methodology was proposed.The results demonstrate that:The hybrid simulation method achieves high accuracy in matching target design response spectra and effectively envelops target power spectral densities;Due to distinct local vibrational characteristics of floor slabs,the vertical response spectrum may exhibit amplification peaks near local natural frequencies—unlike horizontal spectra—which adversely impacts seismic assessments of nuclear equipment;Adjusting the structural layout to modify local vibrational characteristics improves the vertical response spectrum of the targeted floor slab sections.关键词
钍基熔盐堆/人工地震波混合模拟/地震波动输入/土-结构相互作用/楼层谱优化Key words
thorium molten salt reactor/mixed simulation of artificial seismic waves/earthquake wave input/soil-structure interaction/floor spectrum optimization分类
建筑与水利引用本文复制引用
吕方宏,陈晓明,何军..非岩性地基钍基熔盐堆厂房楼层反应谱分析与优化[J].结构工程师,2025,41(4):80-90,11.基金项目
国家重点研发计划项目(2023YFC3806100) （2023YFC3806100）
上海建工集团基础研究项目(24JCYJ-05) （24JCYJ-05）
