【摘要】 以压水堆核电站反应堆厂房结构为分析对象,利用功率谱密度函数法(PSDF)建立了楼层反应谱(FRS),研究了在增加隔震装置情况下,土-结构相互作用(SSI)、主次结构耦合作用和次结构阻尼比等因素对FRS计算的影响,定量分析了厂房结构FRS对这几种因素的敏感性。研究结果表明,隔震后FRS峰值下降明显,并且主要出现在隔震频率附近;同时隔震作用、SSI和主次结构耦合作用交叉影响,厂房设计时必需综合考虑这几种作用。更多还原

【Abstract】 Based on the reactor building of a 1 000 MW Pressurized Water Reactor(PWR) nuclear power station,the floor response spectra in the use of power spectrum density functions has been generated,the main factors(such as soil-structure interaction,second-primary structure interaction and damping ration of secondary system) which have great effect on FRS is investigated with the base-isolation devices added in reactor building,and the sensitivity of the floor acceleration response spectra of the reactor building to the change of this main factors is quantitatively analyzed.The result show that the peak acceleration of FRS is effectively decreased with additional base-isolation devices,and it mainly appears near the base-isolation frequency;in the same time,the base-isolation effect,SSI and second-primary structure interaction are with cross effect,and it is necessary to consider all the effects in the design of nuclear reactor buildings.更多还原