Direct analysis of high-strength concrete-filled-tubular columns with circular & octagonal sections

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• 作者：Si-Wei Liu^a ; ^{siwei.liu@connect.polyu.hk} ; Tak-Ming Chan^a ; ^{tak-ming.chan@polyu.edu.hk} ; Siu-Lai Chan^a ; ^{ceslchan@polyu.edu.hk} ; Derek Kwok-Leung So^b ; ^{derek_so@hiphing.com.hk}
• 关键词：Direct analysis ; Element ; High-strength concrete ; Nonlinear ; Octagonal ; Steel
• 刊名：Journal of Constructional Steel Research
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：129
• 期：Complete
• 页码：301-314
• 全文大小：2779 K
• 卷排序：129

文摘

High-strength concrete-filled-tubular (HCFT) columns are studied. Confined concrete in circular and octagonal sections are investigated. A curved-piecewise-Hermite (CPH) element is developed for HCFT columns. A plastic fiber hinge model using yield surfaces is proposed. Material models for confined concrete in circular and octagonal tubes are proposed.