螺栓及T型钢板连接木梁-木柱节点耐火极限有限元分析  

Finite Element Analysis of Fire Endurance of Timber Beam-Timber Column Joints Connected by Bolts and T-shaped Steel Plates

作　　者：姚悦 刘永军[1] 陈洋 YAO Yue;LIU Yongjun;CHEN Yang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168;School of Management,Shenyang Jianzhu University,Shenyang 110168)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳建筑大学管理学院,辽宁沈阳110168

出　　处：《常州工学院学报》2022年第5期1-6,共6页Journal of Changzhou Institute of Technology

基　　金：“十三五”国家重点研发计划项目(2018YFD1100403-03)。

摘　　要：为了研究采用螺栓及T型钢板连接的现代木结构木梁-木柱节点的耐火极限性能,文章依据相关试验,采用Abaqus软件建立了有限元分析模型,考虑持荷水平为10%、20%以及30%对节点耐火极限的影响,所得耐火极限有限元计算值分别为31、21.3、12.5 min,与试验所得数据对比,误差分别为10.7%、8.2%和6.7%。该有限元分析方法的结果符合试验所得结果,并进一步验证了试验所得“持荷水平越大,节点耐火极限时间越短”这一结论,为今后研究此类连接节点的耐火性能提供技术参考。In order to study the fire endurance of timber beam-timber column joints of modern timber structures connected by bolts and T-shaped steel plates, according to relevant tests, a finite element analysis model is established by means of Abaqus software. Considering the influence of load holding levels of 10%, 20% and 30% on the fire endurance of joints, the obtained finite element calculation values of the fire endurance are respectively 31 min, 21.3 min and 12.5 min. Compared with the test data, the errors are respectively 10.7%, 8.2% and 6.7%. The results of the finite element analysis method conform to the test results, and further verify the conclusion obtained from the test that “the larger the load holding level, the shorter the fire endurance time of the joints”, which provides technical reference for the future study on the fire endurance of such connection joints.

关 键 词：木结构 木梁-木柱节点 螺栓及T型钢板 耐火极限 有限元分析 

分 类 号：TU366.2[建筑科学—结构工程]