竹重组材研究进展
摘要：竹材是环境友好、可循环使用的绿色建材，但原竹尺寸较小、刚度较低，从而制约了其推广应用。 竹重组材是将竹材重新组织并加以强化成型的一种竹质新材料，其优点在于原料利用率高、强度高、材质均匀、加工性能好。 目前的生产工艺可以灵活控制构件的尺寸和长度，具备良好的推广应用前景。本文首先介绍了国内外竹重组材的生产工艺研究和发展概况，指出研发耐久性较强而又不减弱竹重组材力学性能的方法，以及提高竹重组材产品生产的机械化自动化程度是生产工艺研究的主要发展方向；最后以FRP筋在混凝土以及竹木中的研究提出了内嵌FRP筋加固法增强竹重组材梁抗弯性能试验研究。
关键字：竹重组材，施工工艺，力学性能，内嵌FRP法
A review on development of parallel bamboo stand lumber
Abstract:Bamboo is a green construction material which has advantages of sustainability, environmental friendliness, and the capability of being reused or recycled. Although bamboo is a promising wood substitute, its application is limited by the diameter of the bamboo culm and the low rigidity. Parallel bamboo stand lumber(PBSL) is a bamboo new material that reorganizes and reinforces bamboo material. It has the advantages of high material utilization, high strength, uniform material, and good processing performance. The current production process can flexibly control the size and length of its components, and has a good prospect of popularization and application. Firstly，based on the introduction of research and development situation on PBSL manufacturing technology,two main research development directions were pointed out, which were strong durability PBSL products and production automation improvement. Secondly，the research about the basic mechanical properties of PBSL was elaborated from two aspects ，which were material performance and structural member behavior. Then the research problems needed to be solved were proposed，Finally, based on the study of FRP reinforcement in concrete and bamboo, the experimental research on strengthening the flexural behavior of bamboo composite beams reinforced with embedded FRP bars is put forward.
Key words：parallel bamboo stand lumber; production technology; mechanical properties; NMS
中国是竹类资源最为丰富，竹林面积最大、产量最多、栽培历史最悠久、经营管理水平较高的国家，素有“竹子王国”之美誉。
竹子是地球上生长最快的草本植物，其生长速度比长得最快的树木还要快1.3倍。一株毛竹从出笋到成竹只需2个月左右的时间，当年即可砍下用作造纸原料，如果用作竹材原料，也只需3～6年的加固生长而已，远比树木快。因此，开发和利用竹材资源，将竹材广泛应用于建筑结构领域是实现建筑环保，经济、社会可持续发展的重要举措，具有很高的实用价值和环保效益。在我国当前发展低碳经济的大环境下，绿色、环保、低碳的新型建筑材料是土木工程发展的必然方向。我国竹资源十分丰富，无论是竹子的种类、竹林的种植面积、储蓄量还是竹材的加工工艺，均居世界前列。竹材与木材相比具有经济性、灵活性、低技术、安全性、舒适性、耐用性和绿色、可持续性几点优势。
传统的竹建筑主要以原主材料为基本构建，由于原竹材料壁薄中空、直径较小、尖削度大、结构不均匀，其几何尺寸和力学性能具有很大的变异性[1-2]，因此，原竹构件不能满足现代建筑结构对材料物理力学性能及构件尺寸的要求。现代工业竹材为解决上述问题提供了有效的途径。
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