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Experimental study on flexural performance of glued-laminated-timber-bamboo beams

机译：胶合层合竹木梁抗弯性能的试验研究

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摘要

Engineered bamboo, produced through the technique of gluing and reconstituting, has better mechanical properties than round bamboo and some wood products. This paper studies the flexural performance of laminated beams produced with timber and engineered bamboo. The six-layer beams were made from Douglas fir, spruce, bamboo scrimber and laminated bamboo, or a combination of these. It is confirmed that glued-laminated wood beams produced with wood of weak strength, like spruce, can be strengthened by gluing engineered bamboo lumbers on the outer faces, thus achieving better utilization of the fast growing economic wood species. Flexural failure of the laminated beams was primarily triggered by tensile fracture of the bottom fiber in mid-span, followed by horizontal tearing beside the broken surface. No relative slip between layers was observed before failure, therefore the flexural capacity of the laminated beams can be predicted using equilibrium and compatibility conditions according to the plane section assumption.
机译：通过粘合和重构技术生产的人造竹具有比圆形竹和某些木制品更好的机械性能。本文研究了用木材和人造竹制作的层压梁的抗弯性能。六层横梁由花旗松，云杉，竹和层压竹子或它们的组合制成。可以确定的是，通过将人造竹材粘合在外表面上，可以加固强度较弱的木材（如云杉）制成的胶合层压木梁，从而更好地利用了快速增长的经济型木材。叠层梁的弯曲破坏主要是由中跨底部纤维的拉伸断裂引起的，然后在断裂表面旁边水平撕裂。在破坏之前没有观察到层之间的相对滑动，因此可以根据平面截面假设使用平衡和相容性条件来预测层压梁的挠曲能力。

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  • 来源
    《Materials and structures》 |2018年第1期|9.1-9.14|共14页
  • 作者

    Xu Qingfeng; Leng Yubing; Chen Xi; Harries Kent A.; Chen Lingzhu; Wang Zhuolin;

  • 作者单位

    Shanghai Res Inst Bldg Sci, Shanghai Key Lab Engn Struct Safety, 75 South Wanping Rd, Shanghai 200032, Peoples R China;

    Shanghai Res Inst Bldg Sci, Shanghai Key Lab Engn Struct Safety, 75 South Wanping Rd, Shanghai 200032, Peoples R China;

    Shanghai Res Inst Bldg Sci, Shanghai Key Lab Engn Struct Safety, 75 South Wanping Rd, Shanghai 200032, Peoples R China;

    Univ Pittsburgh, Dept Civil & Environm Engn, Pittsburgh, PA 15261 USA;

    Shanghai Res Inst Bldg Sci, Shanghai Key Lab Engn Struct Safety, 75 South Wanping Rd, Shanghai 200032, Peoples R China;

    Shanghai Res Inst Bldg Sci, Shanghai Key Lab Engn Struct Safety, 75 South Wanping Rd, Shanghai 200032, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Engineered bamboo; Bamboo scrimber; Timber; Laminated beams; Flexural performance;

    机译：人造竹;竹;木材;层压横梁;抗弯性能;

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