木结构榫卯节点耗能加固有限元分析
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摘要
我国西南、西北等地区存在着量大面广、危险性大的木构架承重建筑,严重威胁人民生命财产安全,急需进行加固修复。本文提出了一种新型木结构榫卯节点的加固方式:耗能软钢加固,并采用大型有限元软件ABAQUS对其在低周反复荷载作用下的抗震性能进行研究。通过对比加固前后榫卯节点的滞回曲线、骨架曲线等参数,可知加固后的节点刚度增大,耗能能力更强。
There are many timber structures distributed throughout the southwest and northwest of China,frequently stricken by the earthquake.People's lives and property are in danger.Strengthening and repairing should be employed immediately in these places.A new reinforcing method,named energy dissipation soft steel reinforcement,is presented in this paper.The software ABAQUS was used to analyze its seismic performance under the low reversed cyclical loads.Parameters,such as hysteresis curves and skeleton curves,were used to evaluate the new reinforcing method.After reinforcement,the joint stiffness and seismic performance are better.
There are many timber structures distributed throughout the southwest and northwest of China,frequently stricken by the earthquake.People's lives and property are in danger.Strengthening and repairing should be employed immediately in these places.A new reinforcing method,named energy dissipation soft steel reinforcement,is presented in this paper.The software ABAQUS was used to analyze its seismic performance under the low reversed cyclical loads.Parameters,such as hysteresis curves and skeleton curves,were used to evaluate the new reinforcing method.After reinforcement,the joint stiffness and seismic performance are better.
引文
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[4]周楠楠,何敏娟.轻型木结构剪力墙有限元分析[J].结构工程师2,010(6):37-41.Zhou N N,He M J.Finite element analysis of shearwalls in light wood-framed houses[J].StructuralEngineers2,010(6):37-41.(in Chinese)
[5]Hibbitt,Karlsson,Sorensen.ABAQUS theory manual[M].Pawtucket,R.I.,2000.
[6]伊思慈.木材学[M].北京:中国林业出版社1,996.Yi S C.Wood Science[M].Beijing:China ForestryPublishing House,1996.(in Chinese)
[7]熊海贝,化明星,康加华,等.轻型木结构钉节点低周反复试验研究[J].结构工程师,2011(S1):195-200.Xiong H B,Hua M X,Kang J H,et al.Cyclic testsresearch on nail joints of light wood frame structures[J].Structural Engineers.2011(S1):195-200.(inChinese)
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