会善寺大雄宝殿斗拱力学性能试验

会善寺大雄宝殿建于元代,为传统抬梁式木结构建筑,其建筑形制、技术对我国传统建筑研究有着重要的意义。以大雄宝殿斗拱为研究对象,基于斗拱的构造特征,制作了6个1∶1的足尺模型试件,其中2个进行竖向单调荷载试验,4个进行水平低周反复荷载试验。根据试验现象和试验数据的分析,探讨了斗拱的传力机理,研究了各组试件的破坏模式、刚度、变形和耗能等力学性能。结果表明,会善寺大雄宝殿斗拱在竖向荷载作用下具有良好的承载能力,栌斗与头昂、泥道拱交互处易发生剪切或承压破坏;在水平低周反复荷载作用下,破坏模式表现为各部件间联系的松散,斗拱表现出良好的变形和耗能能力,刚度退化明显,但具有较好的延性。

Experimental Study of Mechanical Performance of Dougong in Mahavira Hall of Huishan Temple

Mahavira Hall of Huishan Temple was built in the Yuan Dynasty. It is a traditional timber beam-lifting structure whose architectural form and structural technology are of great significance for study. Based on the component characteristics of the Dougong in the Mahavira Hall, six full-scale specimens were designed, two of which were tested in vertical monotonic loading while the other four were tested at cyclic loading. Failure modes and mechanical performance were studied based on the experiment and the test results. The results showed that the Dougong has a good vertical bearing capacity. However, the intersection joints of Ludou, Touang, and Nidaogong are the weak parts. In horizontal cyclic tests, failure modes were found to be the loose of the connections between components. Stiffness degradation was observed while deformation capacity, energy dissipation, and ductility were very decent.