意杨旋切板胶合木中式木框架抗侧性能研究

Research on the Lateral Resistance of Chinese Style Poplar Laminated Veneer Lumber Frames

梁柱式木框架又称中式木框架,是中国古建筑的主导结构形式。本文以意杨LVL为原材料,通过6榀中式木框架,研究了单调荷载下和低周反复荷载作用下,螺栓–钢填板木框架、植筋节点木框架、木框架剪力墙组合结构的抗侧性能,得出螺栓–钢填板木框架的抗侧刚度略小于植筋节点木框架,但最终承载力较之更大;木框架剪力墙组合结构在承载力、强度、刚度、耗能能力等方面均远优于纯框架;在低周反复荷载作用下,各构件呈现出明显的捏缩效应,其中以螺栓–钢填板木框架最明显;通过理论分析推导了意杨LVL纯框架和框架–剪力墙混合结构抗侧承载力计算公式。

Beam column wood frame, also known as Chinese style wooden frame, is the dominant structural form of Chinese ancient architecture. This paper studied the lateral resistance of six Chinese style frames under one-way and low reversed cyclic loading. The results prove that the bearing capacity of the Poplar LVL connection with bolt steel plate is better, but the lateral stiffness is slightly less than frame connecting rebar. Poplar LVL frame-shear wall is far better than pure frame in bearing capacity, strength, stiffness and energy dissipation capacity. The hysteresis curve of the frames presents obvious pinch effect, the frame connected with bolt steel plate behave the most obvious shrinkage effect. The lateral bearing capacity calculation formula of poplar LVL pure frame and frame shear wall structure are derived.