地震荷载作用下钢筋混凝土安全壳的可靠性分析  

Seismic reliability analysis of reinforced concrete containment

作　　者：卢文达[1,2] 廖汶[1,2] 张强[1,2] 

机构地区：[1]上海理工大学 [2]同济大学

出　　处：《上海理工大学学报》1998年第1期10-14,共5页Journal of University of Shanghai For Science and Technology

基　　金：国家自然科学基金

摘　　要：对秦山核电站的钢筋混凝土安全壳进行了地震可靠性分析．结构系统极限破坏的可靠度采用稳定构形法（ＳＣＡ）和三维有限元法的应力分析（ＦＥＭ）来估计．结构系统的破坏定义为所有可能的稳定构形破坏事件的交集．用２ＳＳＥ地震作为输入地震荷载．地面运动假设为具有田治见洪－金井清谱的零平均平稳高斯过程．基于在不同峰地面加速度下计算的条件破坏概率，给出了系统极限状态的破坏概率以及初始屈服时的年破坏概率．The reliability analysis of a reinforced concrete containment of Qinshan Nuclear Power Plant under seismic excitation is carried out.The system reliability against ultimate failure is evaluated by the stable configuration approach (SGA) and the three dimensional finite element mehtod (FEM) of stress analysis. The failure of the structural system is formulated as the intersection of damages to the stable configuration. The input seismics loading is chosen corresponding to 2SSE earthquake. The ground motion is assumed to be a zero mean stationary Gaussian process with a Kanai Tajimi spectrum. Based on the computed conditional failure probabilities of containment under various peak ground accelerations, the probabilities of ultimate system failure as well as initial yielding per year are given.

关 键 词：地震可靠性 钢筋混凝土 安全壳 稳定构形法 

分 类 号：TL364.3[核科学技术—核技术及应用]