Modeling and Analysis for Seismic Evaluation of Nuclear Structures

摘要

Nuclear structures are typically reinforced concrete shear wall buildings constructed either embedded in or on the ground surface. Nuclear structures contain equipment, systems, and components that are safety-related and generally require seismic qualification by either full-scale testing or analysis. Evaluation of a safety-related nuclear structure is typically performed by dynamic analysis of a finite element model of the structure considering three orthogonal components of input motion. The paper addresses updates to ASCE 4 in the areas of finite element modeling, damping for multiple levels of response, modal response combination, frequency domain response methods, multi-step analyses, and nonlinear seismic analysis.