The reinforcement and repair of historical wooden structures is very important because they reflect the socio-economic structure and architectural construction techniques of the period it was built. In this study, carbon fiber-reinforced polymer (CFRP) strips were used to improve the mechanical behaviors of old wood (OW) samples that were damaged over time because of various environmental effects and biological factors. To determine the effect of reinforcement on the strength values of OW and new wood (NW) samples under bending and compression loads, CFRP strips were applied at tension surfaces of bending samples and around the perimeter of compression samples. The effect of reinforcement on mechanical properties of OW and NW samples was evaluated with a statistical analysis program. Moreover, the ductility and energy dissipation capacities of experimental samples was calculated from the load-deflection curve obtained under bending loading. Reinforcement with CFRP has significantly improved the mechanical strength and stiffness of OW samples. The bending strength values increased 28%, 34% and 59% for new wood (NW), reinforced old wood (FROW) and reinforced new wood (FRNW) with respect to the non-reinforced OW, respectively. The modulus of elasticity values of NW, FROW and FRNW were 15%, 19% and 34% higher than OW, respectively. The 3-dimensional numerical model was developed and validated by experimental tests carried out on wood samples with and without reinforcement arrangements. Wood behaviors were modeled using uniaxial stress-strain curves. In numerical analysis, load-deflection curves, equivalent stresses and normal stresses of the beams were obtained. A good correlation was obtained between numerical and experimental results.

加强和修复历史悠久的木结构非常重要，因为它们反映了建木时期的社会经济结构和建筑施工技术。在这项研究中，碳纤维增强聚合物（CFRP）条用于改善由于各种环境影响和生物因素而随时间而受损的旧木（OW）样品的机械性能。为了确定在弯曲和压缩载荷下加固对OW和新木材（NW）样品的强度值的影响，将CFRP条带施加到弯曲样品的受拉表面和压缩样品的周围。用统计分析程序评估了增强对OW和NW样品力学性能的影响。而且，根据弯曲载荷下的载荷-挠度曲线计算出了实验样品的延展性和能量耗散能力。CFRP加固显着提高了OW样品的机械强度和刚度。相对于非增强型OW，新木（NW），增强的旧木（FROW）和增强的新木（FRNW）的抗弯强度值分别增加了28％，34％和59％。NW，FROW和FRNW的弹性模量值分别比OW高15％，19％和34％。通过对带有和不带有钢筋布置的木材样品进行的实验测试，开发并验证了三维数值模型。使用单轴应力-应变曲线对木材行为进行建模。在数值分析中，载荷-挠度曲线 得到梁的等效应力和法向应力。在数值和实验结果之间获得了良好的相关性。