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林业科学 ›› 2013, Vol. 49 ›› Issue (3): 122-128.doi: 10.11707/j.1001-7488.20130317

• 论文 • 上一篇    下一篇

现代竹结构中重组竹销的槽承压强度

李霞镇, 钟永, 任海青   

  1. 中国林业科学研究院木材工业研究所 北京 100091
  • 收稿日期:2012-06-11 修回日期:2012-09-03 出版日期:2013-03-25 发布日期:2013-03-25
  • 通讯作者: 任海青

Dowel-Bearing Strength of Recombinant Bamboo in Modern Bamboo Structure

Li Xiazhen, Zhong Yong, Ren Haiqing   

  1. Research Institute of Wood Industry, CAF Beijing 100091
  • Received:2012-06-11 Revised:2012-09-03 Online:2013-03-25 Published:2013-03-25

摘要: 选取试样尺寸、螺栓直径等因素对重组竹销槽承压强度进行分析,评价NDS/LRFD和Eurocode 5中销槽承压设计公式对重组竹销槽承压强度预测的适用性,分析2个加载方向试样的破坏形态。结果表明:试样尺寸在满足设计最小值的前提下,对销槽承压性能无显著影响,销槽承压强度值在104.40~169.77MPa范围内波动; 2个加载方向的销槽承压强度从数值上看,随螺栓直径的增大呈下降的趋势; NDS/LRFD和Eurocode 5对重组竹销槽承压强度的预测值偏小; 加载方向的不同对试样的破坏形式影响较大。

关键词: 重组竹, 销槽承压强度, 试样尺寸, 螺栓直径, 破坏形式

Abstract: The dowel-bearing property is very important in compression yield strength calculation of bolted connections and is a critical component of wood or bamboo connection design. In this paper, the dowel-bearing strength was studied based on dimension, bolt diameter as test parameters. The application of NDS/LRFD and Eurocode 5 in dowel-bearing strength prediction was assessed. Besides, the damage modes in two loading directions were analyzed. It showed no dimension effect on dowel-bearing strength which ranged between 104.40 MPa and 169.77 MPa in either direction, if the dimension reaches the minimum requirements. The dowel-bearing strength test values showed a decreasing trend with the bolt diameter increasing. NDS/LRF and Eurocode 5 all under predicted the dowel-bearing strength of recombinant bamboo. The damage modes of the two loading direction samples were obviously different.

Key words: recombinant bamboo, dowel-bearing strength, dimension, bolt diameter, damage mode

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