摘要
我国依托项目的屏蔽厂房筒壁采用了不同于AP1000标准化设计的结构型式，再加上核岛模型依据设计变更所作的后续修改，导致硬基岩条件下的楼面反应谱无法被标准设计谱包络。从而显著影响后续管道和设备的抗震设计与复核。本文在AP1000核电厂标准化设计技术消化、吸收、复现的基础上，简要介绍了核岛结构的地震时程分析及反应谱的拓宽和包络等全过程，重点针对无法被标准设计谱包络的楼面反应谱，提出了两种切实可行的优化方法，分别为地震加速度输入时程重新匹配和楼面反应谱峰值折减，可将楼面反应谱对管道和设备抗震设计的超越影响降到最低．
The Shield Building cylindrical wall design of China Nuclear Power Plant（CPP） is evident- ly different from the standard AP1000 Nuclear Power Plant（APP）, and some latter modifications have been made to the nuclear island model, so that the generated floor response spectra （FRS） can not be enveloped by the standard design FRS, which affects the seismic design of piping and equipment supported by nu- clear island structures. After introducing the seismic time history analysis of nuclear island model and broadening and enveloping of FRS, this paper puts forward two optimization methods for dealing with the exceeded FRS, one is rematching for input seismic acceleration time history, the other is reducing in peak amplitude for FRS, which can reduce the impact on the seismic design of piping and equipment as much as possible.
出处
《核电工程与技术》
2013年第1期47-50,61,共5页
Nuclear Power Engineering and Technology
关键词
时程分析
楼面反应谱
优化
AP1000
time history analysis, floor response spectra, optimization, AP1000
