本文選題：抗震裕度評價　切入點：抗震裕度地震　出處：《地震地質(zhì)》2017年05期 　論文類型：期刊論文

【摘要】：福島核事故后,地震作為初始事件引發(fā)核電廠嚴重事故的問題引起了廣泛關注。在此背景下,中國核電廠相繼開展了抗震裕度評價,但在評價中選用了不同的地震譜形�；诿绹槍υ缙谶\行核電廠開展的抗震裕度評價方法和中國核電廠址的地震危險性背景分析,對比了中美兩國核電廠抗震設計基準的差異,針對中國目前的情況,建議優(yōu)先對采用二代加堆型的運行電廠進行抗震裕度評價。通過將RG1.60譜與歸一化廠址特定SL-2級加速度反應譜進行對比分析,發(fā)現(xiàn)部分核電廠址反應譜譜形在高頻部分超過了RG1.60譜,對于這類廠址,直接放大標準反應譜作為抗震裕度地震是不恰當?shù)�。對于采用二代加堆型的核電廠,選擇了某個廠址特定SL-2級地震動與標準設計比較接近的核電廠址進行了分析,采用不同方法確定其抗震裕度地震,結果表明0.3g標定的NUREG0098中值譜在平臺段和長周期部分明顯低于相同PGA水平的一致概率譜和設定地震譜,三者都能被0.3g標定的RG1.60譜所包絡�？紤]到中國運行電廠的抗震設計特點,為了評價核電廠實際抗震能力相對于廠址的抗震安全裕度,可以采用一致概率譜或設定地震譜;為了評價二代加運行核電廠實際抗震能力相對設計基準地震動的抗震安全裕度,建議采用給定PGA標定的RG1.60譜。
[Abstract]:After the Fukushima nuclear accident, the earthquake, as an initial event, caused serious accidents in nuclear power plants. In this context, the earthquake tolerance evaluation of nuclear power plants in China has been carried out one after another. However, different seismic spectrum forms are selected in the evaluation. Based on the seismic margin evaluation method for the early operating nuclear power plant in the United States and the seismic hazard background analysis of the nuclear power plant site in China, The differences of seismic design benchmarks for nuclear power plants between China and the United States are compared. In view of the current situation in China, It is suggested that priority should be given to the evaluation of the aseismic margin of the second generation plus reactor type power plant. By comparing and analyzing the RG1.60 spectrum and the specific SL-2 acceleration response spectrum of the normalized plant site, It is found that the response spectrum of some nuclear power plant sites exceeds the RG1.60 spectrum at high frequency. It is inappropriate for such sites to directly enlarge the standard response spectrum as an earthquake with seismic margin. The nuclear power plant site with specific SL-2 magnitude ground motion and standard design is selected for analysis, and the seismic margin earthquake is determined by different methods. The results show that the NUREG0098 median spectrum calibrated by 0.3g is obviously lower than the uniform probability spectrum and the set seismic spectrum of the same PGA level in the platform and the long-period section, and all three can be enveloped by the 0.3g RG1.60 spectrum. In order to evaluate the seismic safety margin of the actual seismic capacity of the nuclear power plant relative to the site, we can adopt the uniform probability spectrum or set the seismic spectrum, in order to evaluate the seismic safety margin of the actual seismic capacity of the second generation plus operation nuclear power plant relative to the design reference ground motion, The RG1.60 spectrum calibrated by given PGA is recommended.
【作者單位】： 中國地震局地球物理研究所;環(huán)境保護部核與輻射安全中心;
【基金】：國家重大科技專項子課題“核電廠工程場地地震影響及其適應性評價技術研究”(2013ZX06002001-09)資助
【分類號】：P315.9;TM623
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本文編號：1631203