Bamboo has attracted much attention and gained economic and environmental values for its excellent properties such as fast growth, short rotation, sustainability, and high strength. One of the bamboo engineering products most widely used in construction, furniture, etc. is the laminated bamboo board which is made of bamboo strips. However, the arc-shape makes bamboo strips must be planed on four sides to be rectangular before assembling and gluing. After the quadrilateral planning process, a large part (60–70%) is removed. On the other hand, due to the non-uniform distribution of vascular bundles, bamboo is characterized by heterogeneity confined to decreased density and mechanical strength from the outer to the inner part, which causes the difficulty of stable quality control of engineered bamboo products. To increase the rate of bamboo utilization and achieve the goal of homogenization, this study proposed an integrated thermo-hydro-mechanical treatment combining flattening and homogenization on arc-shaped bamboo strips. Fresh bamboo strips with 70% moisture content were compressed at 170 °C with customized vapor releasers for 20 min. After the integrated treatment, arc-shaped bamboo strips were flattened and densified with a compression set of around 44%. The average density reached up to 1.10 g/cm³ from 0.67 g/cm³. And treated bamboo exhibited a relatively uniform density throughout its thickness. The increases of fiber bundle fraction and the density of parenchyma tissues were basic reasons for the density homogenization. The longitudinal tensile tests showed that the treated bamboo had remarkable mechanical performances. After treatment, tensile strength and modulus of elasticity (MOE) of bamboo increased by 52.6% and 35.4%, respectively.

竹子以其生长快、轮作短、可持续性强、强度高等优良特性而备受关注，并获得了经济和环境价值。在建筑、家具等方面应用最广泛的竹类工程产品之一是由竹条制成的层压竹板。然而，弧形使竹条在组装和粘合之前必须在四个侧面上刨成矩形。在四边形规划过程之后，大部分（60-70%）被删除。另一方面，由于维管束分布不均匀，竹材的异质性仅限于由外向内降低密度和机械强度，导致工程竹产品的质量难以稳定控制。为提高竹材的利用率，达到均质化的目标，本研究提出了一种将弧形竹条压扁与均质化相结合的热-液-机械一体化处理方法。含水量为 70% 的新鲜竹条在 170°C 下用定制的蒸汽释放器压缩 20 分钟。综合处理后，弧形竹条被压扁并致密化，压缩变形为44%左右。平均密度达到1.10 g/cm 弧形竹条被压扁并致密，压缩变形约为 44%。平均密度达到1.10 g/cm 弧形竹条被压扁并致密，压缩变形约为 44%。平均密度达到1.10 g/cm³从 0.67 g/cm ³。处理过的竹子在其整个厚度上表现出相对均匀的密度。纤维束分数的增加和实质组织密度的增加是密度均匀化的基本原因。纵向拉伸试验表明，处理后的竹材具有显着的力学性能。处理后竹材的抗拉强度和弹性模量（MOE）分别提高了52.6%和35.4%。