Scholarlink

<p>Historical earthquake records indicate that aftershocks often follow a strong mainshock, impacting NPP structures. A comprehensive parametric study of these structures is required to highlight the influence of varying structural and loading circumstances, specifically the effect of steel liners and buttresses when subjected to earthquake shocks. This will describe the effective ground and structural conditions to be considered while designing of such structures. This study evaluates the seismic behaviour of an NPP building and examines the influence of various earthquake parameters, including epicentral distance, peak ground acceleration, and earthquake duration. Additionally, the presence of a steel liner and the buttress on the outer containment of NPP structure have been investigated. A detailed 3D model has been developed using the finite element software ABAQUS (User documentation, 2014) to facilitate the present analysis. A nonlinear dynamic time-history analysis is executed utilising the robust motion database provided by the PEER Centre. Subsequently, the reliability analysis employing the FOSM theorem utilises the nonlinear dynamic time history results as input to calculate the probability of failure of the NPP structure. The NPP structure with steel liner describes 34.4% and 47.4% lower principal stresses than the structure without steel liner for a given mainshock and aftershock, respectively. While, the NPP structure with a buttress unfolds 27.2% and 26% lower principal stresses than the structure without a buttress for a given mainshock and aftershock, respectively. Therefore, the steel liner and buttress provides additional strength to the structure, which can withstand and resist more earthquake shocks.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Reliability Analysis of Nuclear Power Plant Subjected to Earthquake Shocks

  • 期刊论文

  • 发表日期：

    2025年4月22日

查看全文
  • Prateek,
  • Kamran,
  • Rehan A. Khan,
  • Shakeel Ahmad

摘要

Historical earthquake records indicate that aftershocks often follow a strong mainshock, impacting NPP structures. A comprehensive parametric study of these structures is required to highlight the influence of varying structural and loading circumstances, specifically the effect of steel liners and buttresses when subjected to earthquake shocks. This will describe the effective ground and structural conditions to be considered while designing of such structures. This study evaluates the seismic behaviour of an NPP building and examines the influence of various earthquake parameters, including epicentral distance, peak ground acceleration, and earthquake duration. Additionally, the presence of a steel liner and the buttress on the outer containment of NPP structure have been investigated. A detailed 3D model has been developed using the finite element software ABAQUS (User documentation, 2014) to facilitate the present analysis. A nonlinear dynamic time-history analysis is executed utilising the robust motion database provided by the PEER Centre. Subsequently, the reliability analysis employing the FOSM theorem utilises the nonlinear dynamic time history results as input to calculate the probability of failure of the NPP structure. The NPP structure with steel liner describes 34.4% and 47.4% lower principal stresses than the structure without steel liner for a given mainshock and aftershock, respectively. While, the NPP structure with a buttress unfolds 27.2% and 26% lower principal stresses than the structure without a buttress for a given mainshock and aftershock, respectively. Therefore, the steel liner and buttress provides additional strength to the structure, which can withstand and resist more earthquake shocks.