Experimental and Numerical Study on the Mechanical Performance of Dou-Gong Bracket at the Corner under Vertical Load

刚度 斜格 流离失所(心理学) 材料科学 支架 结构工程 变形(气象学) 抗压强度 有限元法 弹性模量 压力(语言学) 复合材料 工程类 心理学 哲学 语言学 心理治疗师
作者
Chenwei Wu,Jianyang Xue,Dejun Song
出处
期刊:International Journal of Architectural Heritage [Taylor & Francis]
卷期号:18 (4): 526-550 被引量:3
标识
DOI:10.1080/15583058.2023.2169209
摘要

This paper is focused on the mechanical performance of the Dou-Gong bracket at the corner under vertical load. A full-scaled specimen was tested under the static compressive load. The load-displacement curves, load distribution law and displacement of components were discussed. A finite element model was established and validated with test results. The deformation and stress of the whole Dou-Gong bracket and main components were analyzed, and the influence of the wood properties and friction coefficients was studied. The results show that there are four stages in the load-displacement curve and the plastic stiffness is 76.36% lower than that in the elastic stage. The components in the oblique 45° direction mainly transfer the force, while the load distribution ratios in the width and oblique 45° directions of the lower layer is closer to 1. The displacements of the components in oblique 45° direction in the No. 2 and No. 3 layers are smaller than those of the components in width direction. With the increase of the compressive strength, the elastic moduli in the radial direction and the friction coefficients, the stiffness in the plastic stage increases and the maximum displacement decreases. However, the compressive strength and the elastic moduli in the longitudinal direction have little effect on the load-displacement curves.
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