鋼管混凝土管節(jié)點疲勞試驗研究
刁硯1，范文理2
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刁硯1，范文理2（1 西華大學建筑與土木工程學院， 成都 610039； 2 西南交通大學橋梁系， 成都 610031）［摘要］為深入研究鋼管混凝土管節(jié)點的應力集中及疲勞性能，設計了鋼管混凝土管節(jié)點的疲勞試驗，并結合有限元的計算，對管節(jié)點的應力集中、疲勞裂紋的開裂源、裂紋擴展規(guī)律等疲勞相關特性進行了研究，對于變幅加載情況下的壽命進行了等效計算，并通過試驗進行驗證，在焊接接頭良好的情況下，疲勞強度可達到較高的水平。［關鍵詞］管節(jié)點； 疲勞試驗； 有限元； 疲勞壽命中圖分類號：TU392.3，U448.38 文獻標識碼：A 文章編號：1002-848X(2013)05-0045-03Experimental research on fatigue of tubular joints in concrete-filled steel tubeDiao Yan1, Fan Wenli2(1 School of Architecture and Civil Engineering, Xihua University, Chengdu 610039, China; 2 Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China)Abstract: For the further research on the stress concentration and fatigue property of tubular joints in concrete-filled steel tube, and the fatigue test was carried out, and the finite element was used to study the stress concentration, cracking source of fatigue, the rule of crack expansion and related features of fatigue. The life of changed load was calculated. The result verifies that the fatigue strength can achieve higher levels of performance if the welded joints are in a good condition.Keywords: tubular joint; fatigue test; finite element; fatigue life參考文獻［1］范文理.管結構節(jié)點疲勞設計［C］//中國土木工程學會橋梁及結構工程學會第十四屆年會論文集. 南京，2000.［2］袁慧芳.橋梁管道結構節(jié)點應力集中及疲勞壽命［D］.成都:四川大學，2000.［3］錢永久，蒲黔輝.鋼管混凝土桁架的疲勞性能試驗研究［C］//四川省公路學會橋梁員會98年橋梁學術討論會論文集.成都，1998：86-90.［4］Department of Energy(Den). Offshore installations:Guidance on design and construction［S］.HMSO,UK,1984.［5］VAN WINGERDE A M, WARDENIER J, PACKER J A. Commentary on the draft specification for fatigue design of hollow section joints［C］//Proceedings of 8th International Symposium on Tubular Structures. Singapore. 1998：117-127.［6］International Institute of Welding (IIW). Recommended fatigue design procedure for hollow section joints: Part I-Hot spot stress method for hollow section joints. International Institute of Welding, Subcommission XV-E,IIW Doc.XV-582-85［M］.IIW Assembly, Strasbourg, France, 1985.［7］ANSI/AWS D1.1M—2008 Standard specification for welded highway and railway bridges［S］.American Welding Society,2008.
