FRP布增强竹木重组材结构的研究现状
摘要：近年来，随着建筑领域的不断扩展下，木材资源逐渐匮乏，而竹材资源目前来说很丰富，竹材是一种可循环利用的绿色环保型建材，因此如何合理并且有效的利用好竹材资源就显得很重要。但由于原竹尺寸小，刚度也远远不如原木，因此近年来对竹材的力学性能、发展前景概况等各项研究都有所进展。市场上绝大多数的竹产品皆是以大径级的原竹为原料，而小径级的竹材的应用很少。针对这一问题，以竹束为单元制备的重组竹材的出现正好可以缓解，因为对竹材的径级重组竹材没有特殊要求，并且在加工过程中没有打乱竹材的纤维排列方向，保留了竹材的优良性能。首先介绍重组竹的发展由来以及近年来国内外学者对重组竹木材的力学性能的相关研究概况，随后介绍国内外FRP布能进一步增强重组木的力学性能的研究概况，指出FRP布同样能应用在重组竹材上以进一步加强其力学性能且具有重要的理论意义和应用价值。
关键词：竹材；FRP；重组竹；增强；力学性能
Research status of the structure of bamboo and wood restructure reinforced by FRP cloth
Abstract：In recent years, with the continuous expansion of the field of architecture, wood resources are gradually deficient, and bamboo resources are very rich. Bamboo is a green and environment-friendly building material which can be recycled. Therefore, it is very important to make use of bamboo resources reasonably and effectively. However, due to the small size and stiffness of the original bamboo, the research on the mechanical properties and development prospects of bamboo has made some progress in recent years. Most of the bamboo products in the market are raw materials of large diameter bamboo, while the application of small diameter bamboo is very few. In order to solve this problem, the emergence of the bamboo bundle as the unit of the recombinant bamboo can be relieved, because there is no special requirement for the bamboo material, and the bamboo fiber arrangement direction is not disturbed during the processing, and the excellent performance of the bamboo is preserved. This paper first introduces the development of recombinant bamboos and the related research on the mechanical properties of recombined bamboo wood at home and abroad in recent years, and then introduces the general situation of the research on the mechanical properties of the recombinant wood which can be further strengthened by FRP cloth at home and abroad, and points out that the FRP cloth can be applied to the recombinant bamboo to further strengthen its mechanical properties.
Key words: Bamboo; FRP; Reconstituted Bamboo; Enhancement; Mechanical Properties.
在我国,经济的飞速发展对木材的供应产生了巨大的压力,使得目前的研究及企业生产必须以可持续的发展观为基础,以提高资源利用效率和降低成本为目标,重新制定经营战略,以适应国际化的需要。因此合理有效的利用木材与竹材就显得尤其重要。我国地处世界竹子分布中心,是世界上竹类资源最丰富的国家,现有纯竹林总面积420万hm2,其中毛竹林300万hm2,小径杂竹120万hm2[1]。目前总共有90%的竹产品以大径级的毛竹为原材料,但是小径级竹材还没有得到很广泛的应用。对于这个问题，以竹束为单元制备的重组竹材的出现正好可以缓解。因为对于竹材的径级重组竹并没有特殊的要求,并且在加工过程中没有打乱竹材的纤维排列方向,所以竹材的优良性能得以保留[2]。国内外很多的学者对于竹重组材的制造、加工及基本力学性能展开了初步的研究，但是目前来说重组竹相关试验标准及建筑设计标准在国内外是缺乏的，应用研究在建筑上的例子较少，没有建立大量的基本理论。而FRP具有抗拉强度高、抗疲劳、抗腐蚀、易施工、重量轻等特点，虽国内外对FRP加固木梁、FRP加固混凝土梁已有相关研究，但目前国内外对FRP布增强重组竹梁力学性能的研究很少。因此本实验就FRP布增强竹重组材梁进行反复荷载下的试验研究。
1.重组竹的发展由来及生产工艺概况
1.1重组竹材原始材料的运用
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