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                |本期目錄/Table of Contents|

                [1]楊榮華,吳志銘,連宇新.加肋薄壁鋼管混凝土柱局部屈曲與承載力分析[J].廈門理工學院學報,2020,(5):53-59.[doi:1019697/jcnki16734432202005009]
                 YANG Ronghua,WU Zhiming,LIAN Yuxin.Analysis of Local Buckling and Bearing Capacity ofConcreteFilled Stiffened Thin Walled Steel Tubular Columns[J].Journal of JOURNAL OF XIAMEN,2020,(5):53-59.[doi:1019697/jcnki16734432202005009]
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                加肋薄壁鋼管混凝土柱局部屈曲與承載力分析(PDF/HTML)
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                《廈門理工學院學報》[ISSN:1673-4432/CN:35-1289/Z]

                卷:
                期數:
                2020年第5期
                頁碼:
                53-59
                欄目:
                建筑與土木工程
                出版日期:
                2020-10-30

                文章信息/Info

                Title:
                Analysis of Local Buckling and Bearing Capacity of ConcreteFilled Stiffened Thin Walled Steel Tubular Columns
                文章編號:
                16734432(2020)05005307
                作者:
                楊榮華12吳志銘1連宇新1
                (1廈門理工學院土木工程與建筑學院, 福建 廈門 361024; 2華僑大學土木工程學院, 福建 廈門 361021)
                Author(s):
                YANG Ronghua12WU Zhiming1LIAN Yuxin1
                (1. School of Civil Engineering & Architecture,Xiamen University of Technology,Xiamen 361024,China 2. Collge of Civil Engineering,Huaqiao University,Xiamen 361021,China)
                關鍵詞:
                加肋薄壁方鋼管核心混凝土局部屈曲承載力能量法
                Keywords:
                stiffened thin walled square steel tubecore concretelocal buckingbearing capacityenergy approach
                分類號:
                TU398
                DOI:
                1019697/jcnki16734432202005009
                文獻標志碼:
                A
                摘要:
                采用能量法分析加肋薄壁方形鋼管局部屈曲,探討加勁肋的數量和剛度對屈曲系數的影響,以及加肋薄壁鋼管混凝土柱的承載力;同時,在考慮構件屈曲作用及管壁對核心混凝土承載力提高的基礎上,提出帶肋薄壁方鋼管混凝土軸壓短柱的極限承載力公式,并用試驗數據驗證其合理性。研究表明:在薄壁鋼管中設置加勁肋,使鋼管的局部屈曲系數變大、核心混凝土約束增強,構件極限承載力也相應得到增加;鋼管局部屈曲系數隨著加勁肋的剛度和數量的增加而增大,合理設置加勁肋可防止構件提早屈曲,提高構件承載力;提出的極限承載力公式和試驗結果有較好的吻合度,與實際受力情況更符合。
                Abstract:
                The energy approach is used to analyze the local buckling of the stiffened thin walled square steel tubular columns,the influence of the number and stiffness of stiffener on the buckling coefficient, and the bearing capacity of stiffened thinwalled concretefilled steel tube.At the same time,based on the consideration of the buckling effect of the member and the improvement of the bearing capacity of the core concrete by tubular wall,a ultimate bearing capacity formula of the short column with stiffened thinwalled square steel tube under axial compression is proposed,with feasibility verification by relevant test data.The results show that the local buckling coefficient of the thinwalled steel tube increases with the increase of the stiffness and number of stiffeners,so that the ultimate bearing capacity of the member is also increasedthe local buckling coefficient of the steel tube increases with the increase of the stiffness and number of stiffeners,and proper setting of stiffeners can prevent early buckling of members and improve their bearing capacity.The formula is in good agreement with the experimental results and better consistence with the actual stress bearing state.

                參考文獻/References:

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                備注/Memo

                備注/Memo:
                收稿日期:20200602修回日期:20200620 基金項目:國家自然科學基金項目(51808474);福建省自然科學基金項目(2017J01725) 通信作者:楊榮華,女,副教授,碩士,研究方向為結構工程與施工管理,Email:rhyang@xmut.edu.cn。
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