第39泰第3期 2017年6月
土水建筑与环境工程
Journal of Civil,Architectural &.Environmental Engineering
doi;10.11835/j.issn. 1674-4764. 2017.03. 006
Vol. 39 No. 3 2znn
木节对轴心受压胶合木柱稳定承载力的影响
郭宇航，周淑容，翟佳，黄宗明
（重庆大学山地城镇建设与新技术教育部重点实验室；土木工程学院，重庆400045）
摘要：采用压杆挠曲线法分析了木节对轴心受压胶合木柱稳定承载力的影响，分析时考虑了初弯水节区、木节影响区和无影响区，3个区域分别采用不同的本构模型，木节区的位置由自编程序随机产生，以模拟实际工程中木节在构件中的随机分布。分别计算了木节率为2%、6%和9%时的稳定系数9。计算结果表明，木节会在一定程度上降低轴心受压胶合木柱的稳定承载力。数值计算
结果和试验数据的对比表明，数值计算结果与试验结果吻合较好。关键词：胶合本柱；压杆挠曲线法；稳定性；水节影响
中图分类号：TU366.3
文献标志码：A
文章编号：1674-4764(2017)03-0044-06
Effect of knot on stability of glulam column under axial
compressiveloading
Guo Yuhang,Zhou Shurong,Cui Jia，Huang Zongming
(Key Laboratory of New Technology for Construction of Cities in Mountain Area,
Ministry of Education; School of Civil Engineering, Chongqing University, Chongqing 400045, P. R. China)
Abstract: The effect of knot was analyzed on stability of glulam column under Axial Compressive Loading, using the column deflection curve method (CDC method). The initial bending, eccentricity, wood knots and elastic-plasticity of wood were considered for analysis. The member in the model was divided into three areas: knot area knot influence area and no influence area, and three related constitutive relations were adopted in the process of analyzing. The locations of knots were randomly generated by designed program to simulate the randomly distributed knots in practical components. The stability coefficient was calculated considering knot at the rate of 2%, 6% and 9%, respectively. The results showed that the knots could reduce the stability capacity of the glulam column in axial compression in some degree. The numerical data was further compared with the test data and they were fit well each other.
Keywords:glulam column; column deflection curve method; stability; effect of knot
收稿日期：2016-01-03
基金项目：国家自然科学基金（51208536）
作者简介：郭宇航（1990-），男，主要从事结构工程研究，（E-mail)gyh32290991@163.com。
周淑容（通信作者），女，副教投，（E-mail)zsr_cqu@163.com。
Received:2016-01-03
Foundation item: National Natural Science Foundation of China (No. 51208536)
Author brief:Guo Yuhang (1990-), main research interest: structural engineering, (E-mail)gyh32290991@163. com.
Zhou Shurong(corresponding author), associate professor, (E-mail)zsr_cqu@163. com.
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