基于时间历程响应的核电站环吊抗震分析

Seismic Analysis of Nuclear Power Plant Polar Crane Basedon Time History Response

针对地震反应谱分析法的不足,以某三代核电站环吊为研究对象,建立了环吊抗震计算模型,研究其在SSE地震发生过程中的抗震性能。运用ANSYS对环节进行地震时程响应分析,计算评估在SSE地震中吊车结构受力、变形等在地震载荷作用下的响应情况。抗震计算结果也表明,对核电站大吨位环吊进行地震时程分析,实施抗震性能设计校核,是非常重要和必要的,同时也为其他类似产品结构的抗震性能校核、设计优化提供了参考。

Aiming at the deficiencies of the seismic response spectrum analysis method,this paper takes a third-generation nuclear power plant ring crane as the research object,establishes a seismic calculation model of the ring crane,and studies its seismic performance during the SSE earthquake.ANSYS is used to analyze seismic time history response of the ring crane,and calculate and evaluate the response of the ring crane under the action of seismic load.The seismic calculation results also show that it is very important and necessary to carry out seismic time history analysis and seismic performance design verification for large tonnage ring crane of nuclear power plant.At the same time,it also provides a reference for seismic performance verification and design optimization of other similar product structures.