Structural Interpretation Of Brackets And Study On Force Transfer Mechanism Of Braket Sets On The Second Floor Eave Column In Yingxian Wooden Pagoda

Dougong is also named Bracket, which is a unique characteristic of the ancient Chinese timber buildings. The Bracket is well known for its aesthetic values,decorative functions, especially, excellent bearing capacity,seismic isolation and seismic absorption. It is of special significance to understand the structural characteristics of Brackets and its fabrication technology, further the research studies on force transfer mechanism of the Brackets under vertical loading. However, there is little research on mechanical properties of Bracket and no report on its full scale experiment for the engineering projects. The paper provides a detailed explanation of its composition, structural characteristics, and describes the research studies on the experimental study and FE-based analysis of the representative Brackets in the Yingxian wooden Pagoda. The main achievements can be summarized as follow:(1) Based on the naming rules of "Ying Zao Fa Shi", was interpreted the structural characteristics of Brackets in the Yingxian wooden Pagoda in detail and selected the Bracket sets on the second floor eave column to give a gravity load calculation about its superstructure and reveal its hidden structure. Simultaneously, the typical Brackets server as the subject of experimental research and finite element analysis.(2) It discussed the design proposal of the second floor braket sets on column and the art of the fabrication, which serves as the test specimen, described the construction technology of Brackets in details, formed the experience of craftsmanship and calculating the material utilization for Brackets, which can be served as the basis of the construction of Brackets for related projects.(3) The experimental studies on force transfer mechanical and deformation characteristics under vertical loading of the second floor bracket sets on column in full size were conducted for the first time, which was also designed to provided the basis for making a security assessment.(4) A FE-based model considering frictional contacts and wood orthotropic properties was conducted for the bracket sets on column to analysis their force transfer mechanism and displacement variation. The finite element analysis results shows deformation tendency is in good in accordance with the experiment.