BEND-RESISTING BEHAVIORS OF LITHOID CULTURAL RELIC REINFORCED WITH CFRP
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摘要: 石质文物由于风化、人为等因素的破坏,在结构性加固保护方面一直是个难题,结合少昊之都石牌坊保护工程,采用碳纤维加固技术对石梁抗弯性能进行试验研究,从破坏模式、承载力、刚度及对梁截面应变的影响等几个方面进行对比分析。石质文物经碳纤维布加固,其破坏形式由原来的正截面脆性破坏转变为斜截面延性破坏,其抗弯承载力及变形能力也有很大提高,试验结果表明,碳纤维加固使石材的抗弯性能得到有效的改善。Abstract: The structural protection of the lithoid cultural relics is a difficult problem for destroys of wind erosion and man-made factors.The bend-resisting behavior of lithoid cultural relics reinforced with CFRP is studied through the test combined with the protective project of Shao Hao decorated archways.The destroyed mode,carrying capacity and rigidity are contrasted and analyzed.The destroyed mode of lithoid cultural relics is changed obviously from right section brittle destroy to oblique section ductile destroy.Its bend-resisting capacity and deformability are improved obviously.The tests results revealed that the bend-resisting capacity of lithoid cultural relics reinforced with CFRP can be enhanced greatly.
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Key words:
- CFRP /
- lithoid cultural relic /
- reinforcement /
- bend-resisting capacity
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Triantafillou T C,Deskovic N.Prestressed FRP Sheets as External Reinforcement of Wood Members.Journal of Structural Engineering,ASCE,1992,118(5):1 270~1 284 [2] 卜良桃,宋力.碳纤维板加固钢筋混凝土梁的抗弯试验和理论研究.建筑结构学报,2007(2):72-79 [3] Debaiky A S,Green M F,Hope B B.Carbon Fiber-Reinforced Polymer Wraps for Corrosion Control and Rehabilitation of Reinforced Concrete Columns.ACI Materials Journal,2002(2):129~137 [4] 赵彤,刘明国.碳纤维布用于改善斜向受力高强混凝土柱抗震性能的研究.土木工程学报,2002(6):13-19 [5] 祝金标,王柏生.碳纤维布加固破损木粱的试验研究.工业建筑,2005,35(10):86-89 [6] Max Schiafli,Eugen Bruhwiler.Fatigue of Existing Reinforced Concrete Bridge Deck Slabs.Engineering Structures,1998,20(11):991-998
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