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发布时间：2019-03-11

论文类型：期刊论文

发表时间：2017-11-01

发表刊物：STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS

收录刊物：EI、SCIE、Scopus

卷号：26

期号：16,SI

ISSN号：1541-7794

关键字：numerical substructure method; large-scale computation; local nonlinearity; nonlinear force corrector; CS technique; seismic analysis

摘要：It is a challenging task to perform large-scale nonlinear analysis for complicated tall building structures due to the trade-off between computational efficiency and numerical accuracy. Existing methods cannot satisfactorily meet the demands of engineering practices because they require predetermining local yielded regions or adaptively refining models during the analysis. This paper presents a modified numerical substructure method (NSM) in which the difficult task is divided into seismic analysis of a linear elastic "master" structure and static nonlinear analyses of a limited quantity of substructures for local yielded regions. A "nonlinear force corrector" is calculated in the substructure and applied on the master structure to consider the contribution of the yielded region's nonlinearity. A 32-story reinforced concrete frame shear-wall building under earthquake is analyzed to verify the NSM and investigate its accuracy and efficiency. In addition, a reinforced concrete frame shake-table test is simulated using the modified NSM, and local damage behaviors and improved accuracy can be obtained using the refined substructure model.