摘要
为研究不同加固方式对榫卯节点应力和挠度的影响,提出6种加固方式,采用ABAQUS软件建模分析节点加固后性能提升情况。结果表明:双侧弧形软钢加固、钢箍加固、双侧弧形软钢和钢箍组合加固、扒钉加固、钢夹板加固、扒钉和钢夹板组合加固时,榫卯接头根部的最大米泽斯应力分别为35.2、10.6、10.6、2.6、3.0、1.6 MPa,梁最大挠度分别为0.8、0.54、0.51、0.7、0.83、0.67 mm,榫卯节点加固后最大应力和最大挠度均得到有效降低,最大应力减少率分别为55.27%、86.53%、86.53%、96.70%、96.19%、97.97%,最大挠度减少率为79.54%、86.19%、86.96%、82.10%、78.77%、82.86%,双侧弧形软钢加固对节点应力减少最少,6种加固方案均能使最大挠度得到有效降低。研究结论为木结构房屋抗震预加固和受损后修缮提供参考。
In order to study the influence of different reinforcement methods on the stress and deflection of mortise tenon joints,six reinforcement methods were proposed,and the performance improvement of joints after reinforcement was analyzed by using ABAQUS software.The results showed that the maximum Mises stress at the root of mortise tenon joint was 35.2,10.6,10.6,2.6,3.0 MPa and 1.6 MPa respectively,and the maximum deflection of beam was 0.8,0.54,0.51,0.7,0.83 MPa and 0.67 MPa respectively.The maximum stress reduction rates were 55.27%,86.53%,86.53%,96.70%,96.19%and 97.97%respectively,and the maximum deflection reduction rates were 79.54%,86.19%,86.96%,82.10%,78.77%and 82.86%respectively.The joint stress was reduced least by the reinforcement of double curved mild steel.The maximum deflection could be effectively reduced by six reinforcement schemes.The research results could provide reference for seismic prereinforcement and repair of damaged timber buildings.
作者
石若利
李其伦
SHI Ruo-li;LI Qi-lun(School of Architecture and Planning,Yunnan University,Kunming 650500,Yunnan,P.R.China)
出处
《林产工业》
北大核心
2021年第9期35-42,共8页
China Forest Products Industry
基金
国家自然科学基金项目(11862024,51264037)
云南大学科研创新基金项目(2020226)。
关键词
木结构
榫卯节点
建筑结构
结构加固
有限元分析
Timber building
Mortise tenon joint
Building structure
Structural reinforcement
Finite element analysis
