積層した炭素繊維シートのVaRTM 成形・接着による面外ガセット溶接継手の疲労耐久性の向上
積層した炭素繊維シートのVaRTM 成形・接着による面外ガセット溶接継手の疲労耐久性の向上
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DOI：
10.11273/jssc.27.105_29
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发表时间：
2020-03
影响因子：
5.4
通讯作者：
タイ ウィサル;拓 小沢;一史 中村;孝洋 松井
中科院分区：
文献类型：
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作者：
タイ ウィサル;拓 小沢;一史 中村;孝洋 松井
采用真空辅助树脂传递模塑（VaRTM）技术，研究了碳纤维布加固钢桥典型焊接节点的疲劳耐久性。制作了焊接节点板的目标试件，并对其进行了循环荷载试验。在名义应力范围参数下，采用VaRTM技术对未加固和碳纤维布加固两种试件进行了疲劳试验，并在外加应力范围内对加固效果进行了评价。结果表明，采用碳纤维布对焊接节点进行VaRTM加固，可显著提高节点的疲劳寿命。
This paper deals with the fatigue durability of typical welded gusset joints in steel bridges strengthened by externally bonded carbon fiber (CF) sheets using Vacuum assisted Resin Transfer Molding (VaRTM) technique. The target specimens of welded gusset plates were fabricated and subjected to cyclic load. The fatigue tests of two types of specimens, non-strengthened and strengthened specimen with CF sheets using VaRTM technique, have been conducted in the parameter of nominal stress ranges and strengthened effects have been evaluated under applied stress ranges. The result shows that the fatigue durability of welded gusset joints strengthened by CF sheets using VaRTM technique can be remarkably improved.