古建筑榫卯节点抗震加固试验
|
摘要
为探究中国古代大木作结构抗震加固的有效方法,分别采用马口铁和CFRP加固榫卯节点,研究了节点加固前后构架的抗震性能。制作了1∶8缩尺比例的木结构空间模型,通过进行低周反复加载试验,获得了构架加固前后的力-侧移曲线,并对比分析了相应的骨架曲线、耗能能力、刚度退化、变形能力等抗震指标。结果表明:马口铁和CFRP均可提高构架的刚度和承载力,且加固后的构架仍有很好的变形性能,但是耗能能力则不如加固前;另一方面,CFRP加固榫卯节点的效果优于马口铁。
To get effective strengthening method for Chinese ancient wooden structures,both iron hook and CFRP are considered to strengthen tenon-mortise joints of Chinese ancient structures,and aseismic behaviors of them after strengthened are studied.Models with a scale of 1:8 of the prototype structure are built considering tenon-mortise connections.By low cyclic reversed loading tests,load-displacement hysteretic curves of the structures are obtained;By analysis their skeleton curves,energy dissipation capability,stiffiness degradation as well as deformation performance are also studied.Results show that both iron hook and CFRP can enhance strength and stiffness of the structure,which remains good deformation performance after strengthened,but energy dissipation capability decreases;On the other hand,CFPR performs better than iron hook in strengthening tenon-mortise joint.
To get effective strengthening method for Chinese ancient wooden structures,both iron hook and CFRP are considered to strengthen tenon-mortise joints of Chinese ancient structures,and aseismic behaviors of them after strengthened are studied.Models with a scale of 1:8 of the prototype structure are built considering tenon-mortise connections.By low cyclic reversed loading tests,load-displacement hysteretic curves of the structures are obtained;By analysis their skeleton curves,energy dissipation capability,stiffiness degradation as well as deformation performance are also studied.Results show that both iron hook and CFRP can enhance strength and stiffness of the structure,which remains good deformation performance after strengthened,but energy dissipation capability decreases;On the other hand,CFPR performs better than iron hook in strengthening tenon-mortise joint.
引文
[1]肖萍.纤维增强复合材料(FRP)在工程结构加固中的应用[J].福建信息技术教育,2007,3:1～3Xiao Ping.Fiber reinforced polymer(FRP)reinforcement in the application of engineering structures[J].Fujian Education of Information Technology,2007,3:1～3(in Chinese)
[2]Liu Wei-qing,Yang Hui-feng.Advanced glued laminatedconstruction and its engineering applications[A].The8th International Symposium on Structural Engineeringfor Young Experts(ISS-EYE-8)[C].Beijing:[sn],2004,698～703
[3]Gentilec,Svecovad,Rizkallash.Timber beamsstrengthened with GFRP bars:devel-opment andapplications[J].Journal of Composites forConstruction,ASCE,2002,6(1):11～20
[4]Micellif,Scialpiv,Tegolaal.Flexural reinforcement ofglulam timber beams and joints with carbon fiber-rein-forced polymerrods[J].Journal of Composites forConstruction,ASCE,2005,9(4):337～347
[5]Gilfillanjr,Gilbertsg,Patrickg.The improved performanceof homegrown timber glulam beams using fiberreinforcement[J].Journal of the Institute of WoodScience,2001,15(6):307～317
[6]王增春,何艳丽,等.FRP加固木结构的应用和研究[J].建筑技术开发,2004,31(3):13～14Wang Zeng-chun,He Yan-li,et al.Research andapplication on FRP[J].Building TechniqueDevelopment,2004,31(3):13～14(in Chinese)
[7]于业栓,薛建阳,赵鸿铁.碳纤维布及扁钢加固古建筑榫卯节点抗震性能试验研究[J].世界地震工程,2008,9(3)Yu Ye-shuan,Xue Jian-yang,Zhao Hong-tie.Experimental study on seismic behavior of mortise-tenonjoints of Chinese ancient wooden building strengthenedwith CFRP sheets and flat steel[J].World EarthquakeEngineering,2008,9(3)(in Chinese)
[2]Liu Wei-qing,Yang Hui-feng.Advanced glued laminatedconstruction and its engineering applications[A].The8th International Symposium on Structural Engineeringfor Young Experts(ISS-EYE-8)[C].Beijing:[sn],2004,698～703
[3]Gentilec,Svecovad,Rizkallash.Timber beamsstrengthened with GFRP bars:devel-opment andapplications[J].Journal of Composites forConstruction,ASCE,2002,6(1):11～20
[4]Micellif,Scialpiv,Tegolaal.Flexural reinforcement ofglulam timber beams and joints with carbon fiber-rein-forced polymerrods[J].Journal of Composites forConstruction,ASCE,2005,9(4):337～347
[5]Gilfillanjr,Gilbertsg,Patrickg.The improved performanceof homegrown timber glulam beams using fiberreinforcement[J].Journal of the Institute of WoodScience,2001,15(6):307～317
[6]王增春,何艳丽,等.FRP加固木结构的应用和研究[J].建筑技术开发,2004,31(3):13～14Wang Zeng-chun,He Yan-li,et al.Research andapplication on FRP[J].Building TechniqueDevelopment,2004,31(3):13～14(in Chinese)
[7]于业栓,薛建阳,赵鸿铁.碳纤维布及扁钢加固古建筑榫卯节点抗震性能试验研究[J].世界地震工程,2008,9(3)Yu Ye-shuan,Xue Jian-yang,Zhao Hong-tie.Experimental study on seismic behavior of mortise-tenonjoints of Chinese ancient wooden building strengthenedwith CFRP sheets and flat steel[J].World EarthquakeEngineering,2008,9(3)(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心