核动力管道抗震完整性试验及分析研究

Test and Research for Integrity Evaluation of Nuclear Pipe System under Seismic Effect

对于偶发性地震载荷过分保守的处理导致核电厂管道系统使用大量的阻尼器、支吊架而使管道系统刚性过大,使核电厂的制造、安装、在役检查及维修等费用增加。依托主管道先进设计技术和试验验证项目,完成了核动力管道系统的抗震极限承载能力试验。将试验和计算分析结果与现行规范对比,明确了当前管道设计标准的安全裕量,提出了管道系统阻尼比值与应力评价准则等参数的取值建议。

For the conservative treatment of sporadic seismic load, a lot of dampers and drop frames were used in the nuclear power plant piping system, which lead to the high cost for the manufactory, installation, in-service inspection and repair. According to the research scheme for integrity evaluation of pipe system under seismic effect, this paper completed the ultimate anti-seismic capacity test of nuclear pipes. Through the comparative study of the test and calculation results and the current specification, the safety margin of current pipeline design standard is clarified. A recommend value of damping ratio and stress evaluation of nuclear piping system is given.