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为研究梁柱式胶合木结构在加固后的抗侧力性能,对9榀单层单跨梁柱式木框架足尺试件进行了低周反复荷载试验,其中3榀为未损坏对照组试件,6榀为加固组试件.考虑了节点区域包裹碳纤维布(FRP)和植入自攻螺钉2种加固方法,及纯框架和隅撑框架2种结构体系形式.根据试验现象和试验数据的分析,探讨了木结构加固方法的可行性,对比了不同方法的效果和差异,研究了各组试件在反复荷载作用下的破坏模式、刚度、变形和耗能等力学性能.结果表明,2种加固方法均可以有效地抑制裂缝开展,并能够恢复结构的强度、刚度、耗能等力学性能;受损的梁柱式木结构框架,采用节点区域加固并增设隅撑,结构的抗侧力性能可以得到显著的提高.
In order to study the anti-side force performance of the beam-column glued timber structure after reinforcement, the low-cycle repeated load test was carried out on the full-length test specimen of 9 榀 single-span beam-column wooden frame, of which 3 榀 was the control group Pieces and 6 榀 are the specimens of reinforcement group.The two kinds of reinforcement methods including FRP and self-tapping screws in the node area and two kinds of structural system forms of pure frame and supporting frame are considered.According to the test phenomenon and test data The feasibility and effectiveness of the methods for strengthening timber structures are discussed and the effects and differences of different methods are compared.The mechanical properties of the specimens such as failure mode, stiffness, deformation and energy dissipation under repeated load are studied.The results show that, The two kinds of reinforcement methods can effectively suppress the development of cracks and restore the mechanical properties such as strength, stiffness and energy dissipation of the structure. The damaged beam-column wooden frame is reinforced by the node area and the corner support is added, Force performance can be significantly improved.