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教研室：College of Civil Engineering, Huaqiao University

发表刊物：Journal of Structural Engineering, ASCE

刊物所在地：United States of America

关键字：Masonry Infilled RC Frames, Central Window Openings, Strength and Stiffness Empirical Model

摘要：Lateral load behavior of reinforced concrete frames infilled with fly ash brick masonry having various sizes of central openings was investigated experimentally. Results showed that the infilled frames with openings exhibited significantly different lateral load behavior than the corresponding infilled frames without openings. The drift limit states corresponding to commencement of major events during the lateral loading (initiation of major cracks in frame members, peak load, and 80% of post-peak load) were found to improve significantly due to presence of openings when designed in accordance with current earthquake standards. Presence of openings in masonry infills modifies two of the most important design parameters - lateral stiffness and strength, for which nonlinear prediction models were developed by carrying out statistical analyses of the experimental results. The empirical models were used to estimate the stiffness and strength of frames tested in the past studies, and were found to be more accurate and consistent compared to several existing predictive relations. A normalized lateral load-drift relationship for different performance levels of such frames was also propounded based on the observed damage events. The empirical equations can be utilized very conveniently to simulate the variation of stiffness and strength (global response) of the infilled frames with openings under lateral loads.

论文类型：期刊论文

学科门类：工学

一级学科：土木工程

文献类型：J

卷号：146

期号：4

页面范围：04020021

ISSN号：0733-9445

是否译文：是

发表时间：2020-01-22

收录刊物：SCI

DOI码：10.1061/(ASCE)ST.1943-541X.0002562

发布期刊链接：https://ascelibrary.org/toc/jsendh/146/4