Research on Flexural Behavior of Dovetail Mortise Tenon Joint Based on Fractional Factorial Design(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年05期
- Page:
- 32-38
- Research Field:
- Publishing date:
Info
- Title:
- Research on Flexural Behavior of Dovetail Mortise Tenon Joint Based on Fractional Factorial Design
- Author(s):
- YANG Na; ZHONG Kai; QIN Shu-jie
- School of Civil Engineering, Beijing Jiaotong University
- Keywords:
- dovetail mortisetenon joint; fractional factorial design; flexural behavior; finite element simulation; mathematical statistics
- PACS:
- -
- DOI:
- -
- Abstract:
- To study the effect of the factors including joint size, material property and friction coefficient etc. on the flexural behavior of dovetail mortisetenon joint under monotonic load, the fractional factorial design method and finite element simulation technology were used to obtain 32 sets of sample values of initial rotational stiffness and ultimate moment bearing capacity under different working conditions. On the basis of statistical analysis, the significance degree quantitative indexes of the dovetail mortisetenon joint under different influence factors were given, and the regression models of the notability factors of initial rotational stiffness and ultimate moment bearing capacity of dovetail mortise joints were established respectively. Finally, combined with the regression model, the threeparameter power function model of dovetail joint, which could be directly used in the overall structure calculation of traditional timber structure, was established. The results show that there are some differences in the significance degree of each factor under different indexes. Overall, the tenon height, the tenon length and friction coefficient have the most significant effect on the initial rotational stiffness and ultimate moment of the joint. Within a certain range, the threeparameter power model based on the regression model has certain reliability. The momentrotation curve of dovetail mortisetenon joint can be directly calculated by using the formula, and the calculation is simple and its convenient for application. The research results can provide a reference and basis for analysis of the flexural behavior of dovetail mortisetenon joint in the existing traditional timber structure.
Last Update: 2018-09-03