Experimental studies on roof trusses made of glubam

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• 作者：Y. Xiao (1) (2)
  G. Chen (3)
  L. Feng (4)
  
• 关键词：Bamboo ; Laminated ; Glubam ; Trusses ; Joints ; Semi ; rigid
• 刊名：Materials and Structures
• 出版年：2014
• 出版时间：November 2014
• 年：2014
• 卷：47
• 期：11
• 页码：1879-1890
• 全文大小：1,451 KB
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• 作者单位：Y. Xiao (1) (2)
  G. Chen (3)
  L. Feng (4)
  
  1. China Ministry of Education Key Laboratory of Building Safety and Energy Efficiency, Hunan University, Changsha, 410082, Hunan, China
  2. Department of Civil and Environmental Engineering, University of Southern California, Los Angeles, CA, 90089, USA
  3. Civil Engineering College, Nanjing University of Forestry Science and Technology, Nanjing, 210037, Jiangsu, China
  4. College of Civil Engineering, Hunan University, Changsha, 410082, Hunan, China
  
• ISSN：1871-6873

文摘

This paper presents experimental and analytical studies on trusses made of glue-laminated bamboo or glubam, which is a new type of structural material unlike conventional steel or timber. Six full-scale model trusses with two types of configurations and sizes were tested to failure under gradually increased vertical load. The failure of the model trusses was caused by lateral buckling of the top compressive chords. Tests show that the model glubam trusses have adequate stiffness and strength. Analyses were also conducted to model the truss behavior with considering different joint conditions, such as pinned, rigid as well as semi-rigid joint using fictitious members. The analytical results for deformation at the design load level agree with the test results favorably well using all types of joint models. The semi-rigid joint model provides a slightly better prediction to the load carrying capacities of the model trusses. However, the analytical truss model based on pinned joints generally provides conservative prediction to load carrying capacities.