建筑结构学报2024，Vol.45Issue(6)：178-191,14.DOI:10.14006/j.jzjgxb.2023.0374
考虑建筑不规则性的适度精细化区域震害模拟方法
A moderately refined regional seismic damage simulation method considering building irregularity
摘要
Abstract
At present,there are a large number of irregular buildings in region which will have lateral-torsional coupling effect when subjected to earthquake actions resulting in serious damage.However,current seismic damage simulation methods are mainly based on two-dimensional inter-story models,which do not take into account the spatial irregularity of buildings.In addition,the refined finite element simulation methods are unsuitable for the simulation of large number of buildings with high degree of data ambiguity.This paper proposes a moderately refined and efficient analysis method which considers the irregular characteristics of structures and is suitable for regional scale seismic damage simulation of building groups.A moderately-refined-layer-element(MRLE)model is established to simulate the lateral stiffness irregularities in layer level,and the vertical irregularities of the structure are simulated by combining different layer elements in series.Considering the large number of buildings in region,a two-level accelerated dynamic analysis method is proposed to reduce computation time for seismic damage simulation.At the single structure level,a perturbation inelasticity-separated nonlinear dynamic control equation of structure is constructed to improve the efficiency of seismic damage simulation.Furthermore,the OpenMP parallel method is used to simulate the seismic damage of regional buildings,and the computational efficiency of the regional level is accelerated.The numerical calculations and a regional seismic damage simulation show that the proposed method is reliably accurate and efficient,and that the lateral-torsional coupling effects of irregular structures lead to increased damage in regional building seismic damage.关键词
不规则建筑/平扭耦联效应/适度精细化层单元/两级加速动力分析方法/区域震害模拟Key words
irregular building/lateral-torsional coupling effect/moderately-refined-layer-element/two-level accelerated dynamic analysis method/regional seismic damage simulation分类
建筑与水利引用本文复制引用
陈文越,余丁浩,李钢..考虑建筑不规则性的适度精细化区域震害模拟方法[J].建筑结构学报,2024,45(6):178-191,14.基金项目
国家自然科学基金项目(52225804,52008075),辽宁省博士科研启动基金项目(2022-BS-089). （52225804,52008075）
