铺作层是唐代殿堂型古建筑木结构的典型特征，约为柱高一半的硕大体量、多层拱枋构件及暗榫相连的框格状构造使其在木构架抗侧过程中发挥了重要作用。学界研究较多的宋及明清时期木构架因斗拱体量减小及斗拱间联系减弱，结构抗侧主要由柱网层提供。不同构造与受力特征导致目前已有研究成果无法适用于唐代殿堂型古建筑木结构。本项目以理论研究为创新突破，结合局部结构单元及整体构架模型的拟静力试验和数值模拟分析，系统研究唐代殿堂型古建筑木结构的基本受力性能，获得木构架及铺作层结构的传力机制、变形特征、破坏机理、滞回性能、抗侧刚度以及耗能与延性特征；着重分析铺作层多朵斗拱与梁架组合的协同抗力机理及柱摇摆抗侧过程中管脚榫与馒头榫的销栓抗力作用；建立能够考虑构件几何尺寸及组件间摩擦、滑移和暗销剪切的铺作层多层叠合梁单元模型和管脚榫浮搁柱脚-馒头榫铺作柱头转动柱模型，为唐代殿堂型古建筑木结构整体性能分析及保护修缮提供科学依据。

Palace-style timber structure in Tang Dynasty is the earliest and precious cultural heritage of existing historic timber buildings. The integrated structure layer composed of Dougong brackets and beams with hidden tenons, namely Puzuo layer, is the most important structural feature and plays an important role in structural lateral resistance. Present researches are mainly focus on the historic timber structures in Song, Ming and Qing Dynasty. Because of the reduction of the volume of Dougong brackets and the weakening connections between adjacent Dougong brackets, the lateral resistance of this kind of structure is mainly provided by the column layer. Different structural and mechanical characteristics lead to that the existing research results on wooden frame and Dougong brackets can not be applied on the palace-style timber structure in Tang Dynasty and it limits the in-depth study of the structure and its scientific protection. The project will study the mechanical properties of the palace-style timber structure in Tang Dynasty through theoretical analysis, laboratory tests and numerical simulations to obtain the force transmission mechanism, deformation characteristics, failure mechanism, hysteretic performance, lateral stiffness, energy dissipation and ductility characteristics of the wooden frame and Puzuo layer. The mechanism of synergistic resistance by Dougong brackets and beams as well as the dowel action resistance of tenons on column foot and head will be analyzed. The multi-layer composite beam element model of Puzuo layer and the rotating column model with consideration of the tenons on column foot and head will be established. The two models can take into account the geometric dimensions of components as well as friction, slip, and hidden dowel shear actions between components, providing basis for the analysis of the overall structural performances and scientific protection of the structure.