CAJ | 학술논문

已有研究表明时程动力法中阻尼矩阵的确定对复杂结构工程的地震响应有明显的影响，而核电厂安全相关结构在抗震分析时通常采用时程动力法。为研究阻尼矩阵的选取对核电厂结构的地震响应的影响，从比例阻尼拟合的精度出发，基于结构不同振型对结构产生的影响程度入手，建立更为精确的结构阻尼模型，即等效比例阻尼，并进一步考虑结构自振特性以加权最小二乘法拟合确定等效比例阻尼系数，提出了核电厂结构地震响应分析相应的计算方法。计算结果表明，该方法较传统比例阻尼的方法更接近精确解，是核电工程抗震分析的一个实用参考应用。
이유연구표명시정동역법중조니구진적학정대복잡결구공정적지진향응유명현적영향，이핵전엄안전상관결구재항진분석시통상채용시정동역법。위연구조니구진적선취대핵전엄결구적지진향응적영향，종비례조니의합적정도출발，기우결구불동진형대결구산생적영향정도입수，건립경위정학적결구조니모형，즉등효비례조니，병진일보고필결구자진특성이가권최소이승법의합학정등효비례조니계수，제출료핵전엄결구지진향응분석상응적계산방법。계산결과표명，해방법교전통비례조니적방법경접근정학해，시핵전공정항진분석적일개실용삼고응용。
To study the effect of determination of damping matrix on the seismic response of nuclear power plant structures,fitting accuracy of the proportional damping of nuclear power plant structures and the influence of different shape of structures were considered.On this basis,a more precise model,that is,an equivalent proportional damping model was set up.Furthermore,a corresponding method for the seismic response analysis of nuclear power plant structures was proposed based on determining the proportional damping coefficient by weighted least square fitting method.The application and analysis show that the results by the proposed method are closer to the exact solutions than by the method with traditional damping coefficient,and it is suitable for the seismic response of nuclear power plant structures.