A refined cellular automata method for predicting failure patterns of masonry wall panels

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Li, Pengcheng^1^2 ; Ma, Xiuli^3 ; Du, Bei^1^2

Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin

150090, China^1

Key Lab of Smart Prev. and Mitigation of Civ. Eng. Disasters of the Min. of Indust. and Info. Technol., Harbin Institute of Technology, Harbin

150090, China^2

School of Electronics and Information Engineering, Harbin Vocation and Technical College, Harbin

150081, China^3

关键词: Cellular Automata method;    Difference functions;    Failure patterns;    Masonry walls;    Matching criterion;    Post processing;    State values;    Taylor expansions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/2/022037/pdf
DOI  :  10.1088/1755-1315/233/2/022037

来源: IOP

【 摘 要 】

In view of the inaccuracy of the existing cellular automata (CA) technique in predicting failure patterns of masonry wall panels, this paper proposed a refined CA method which contains two measures to promote the precision of results. The optimization of matching criterion based on Taylor expansion updates the definition of state values for the CA model of wall panels and improves the accuracy of predicting the failure patterns of wall panels with opening. Besides, the post-processing of noise reduction explains the discontinuity of cracks in wall panels from the perspective of noise based on two proposed theorems, which improves the prediction of the failure patterns in appearance, continuity and clarity of cracks. Meanwhile, the difference functions and similarity of wall panels are introduced to evaluate the predicting results. Moreover, the combination of two measures shows the brilliant capacity in enhancing the accuracy and efficiency of prediction.