碳纤维布及扁钢加固古建筑榫卯节点抗震性能试验研究
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摘要
通过对2个严格按照宋代《营造法式》有关大木作要求制作的木构架模型及其分别用CFRP布和扁钢加固榫卯节点的构架模型在低周反复荷载作用下的试验研究,深入分析了加固前后木构架榫卯节点滞回性能、骨架曲线特性、延性、耗能、刚度退化等抗震性能。从对试验结果分析看,榫卯节点采用CFRP布和扁钢加固都取得良好的效果,为古建筑的抗震设计和加固提供理论依据。
Based on low-cyclic reversed loading experiments of two wooden frame models which were made in accordance with the requirements by Ying Zao Fa Shi(Building Standards) of Song dynasty,the seismic behavior of 4 joints strengthened respectively with CFRP sheets and with flat steels plates was tested,and then hysteresis behavior,skeleton curves characteristic,ductility,energy dissipation and rigidity degeneration of the joints are studied systematically.The tested results are shown that a good effect can be achieved with the joints reinforced by CFRP sheets and flat steel plate,which provide the theoretical basis for the seismic design and strengthened method of ancient wooden buildings.
Based on low-cyclic reversed loading experiments of two wooden frame models which were made in accordance with the requirements by Ying Zao Fa Shi(Building Standards) of Song dynasty,the seismic behavior of 4 joints strengthened respectively with CFRP sheets and with flat steels plates was tested,and then hysteresis behavior,skeleton curves characteristic,ductility,energy dissipation and rigidity degeneration of the joints are studied systematically.The tested results are shown that a good effect can be achieved with the joints reinforced by CFRP sheets and flat steel plate,which provide the theoretical basis for the seismic design and strengthened method of ancient wooden buildings.
引文
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[2]赵均海,俞茂宏,高大峰.中国古代木结构的弹塑性有限元分析[J].西安建筑科技大学学报,1999,31(2):131-133.
[3]李大华,徐扬,郑鹄.对山西应县木塔采用纳米复合纤维加固的建议[J].山西地震,2001,107(4):24-25.
[4]王来,王铁成,陈倩.低周反复荷载下方钢管混凝土框架抗震性能的试验研究[J].地震工程与工程震动,2003,23(3):113-117.
[5]陈勇.型钢混凝土梁柱节点低周反复荷载下的抗震试验及理论研究[D].长沙:湖南大学,2004.
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