重组竹的物理力学性能

Physical and Mechanical Properties of Bamboo Scrimber

重组竹是我国近十年自主研发的性能稳定具有良好应用前景的新材料,但至今未能在建筑结构领域得到较多应用,主要原因是在设计重组竹结构时,缺少重组竹材料符合设计要求的力学性能指标。论文对重组竹材料的物理力学性能进行了试验研究,得到了重组竹材料密度、含水率、吸水性/膨胀性、顺纹抗剪强度和顺纹抗压强度等性能参数,建立了重组竹材料符合工程要求的设计值,并与几种主要建筑材料进行了分析对比。研究表明,重组竹材料物理力学性能优,但密度较大,其材料参数接近《木结构设计标准》中TB20等级木材,可以用于建筑结构。但应用时要注意重组竹材料吸水性好、吸水膨胀率较大的不利影响。

Reorganized bamboo is a new material that has been developed and developed in China for nearly ten years and has good application prospects. However, it has not been widely used in the field of building structure. The main reason is that the lack of reconstituted bamboo material meets the design requirements when designing the restructured bamboo structure. The physico-mechanical properties of the reconstituted bamboo materials were studied experimentally. The performance parameters such as density, water content, water absorption/expansion, shear strength and grain compressive strength of the reconstituted bamboo materials were obtained. The design values required for the project were compared with several major building materials. Studies have shown that the reconstituted bamboo material has excellent physical and mechanical properties, but the density is large. The material parameters are close to the TB20 grade wood in the Wood Structure Design Code, which can be used in building structures. However, the application should pay attention to the adverse effects of the reconstituted bamboo material with good water absorption and large water swelling rate.