【摘要】 为研究高温作用后齿板连接节点承载力退化问题，设计制作了88个轻型木结构齿板连接节点。采用马弗炉对齿板节点进行高温热处理，将自然冷却后的齿板节点进行单向静力拉伸试验，以研究不同温度作用对齿板节点力学性能的弱化作用。结果表明：高温作用后齿板节点以板齿拔出破坏为主，承载力和初始刚度随温度升高呈指数形式下降。基于试验，采用Foschi模型拟合分析得到了高温作用后齿板节点承载力计算公式，计算结果表明该公式能较准确计算高温作用后齿板节点承载力。更多还原

【Abstract】 In order to study the bearing capacity degradation of the metal-plate connection joints after high temperature action, 88 light-duty wood structure metal-plate connection joints were designed and fabricated. A muffle furnace was used to conduct high-temperature heat treatment on the metal-plate joints, and the unidirectional static tensile test was performed on the metal-plate joints after natural cooling to study the weakening effect of different temperatures on the mechanical properties of the metal-plate joints. The results show that the metal-plate joints are mainly damaged by the tooth extraction after high temperature action. The bearing capacity and initial stiffness of the metal-plate joints decreased exponentially with the increase of temperature action. Based on the test, the formula for calculating the bearing capacity of the metal-plate joint after high temperature was obtained by fitting and analysis of the Foschi model. The calculation results show that the formula can accurately calculate the bearing capacity of the metal-plate joints after high temperature action.更多还原