A fuzzy computational framework for the train-bridge system based on Chebyshev polynomials method

被引：1
|
作者：
Zeng, Yingying [1 ]
Zhao, Han [1 ]
Hu, Huifang [1 ]
Zhang, Peng [1 ]
Xiang, Ping [1 ,2 ]
机构：
[1] Cent South Univ, Sch Civil Engn, Changsha, Peoples R China
[2] Taishan Univ, Schoo Civil Engn, Tai An 271000, Shandong, Peoples R China
来源：
STRUCTURES | 2024年 / 70卷
关键词：
Fuzzy; Chebyshev polynomials method; Membership density function; Train-bridge system; Dynamic response; FINITE-ELEMENT-ANALYSIS; DYNAMIC-RESPONSE ANALYSIS; INTERVAL-ANALYSIS METHOD; EIGENVALUE ANALYSIS; STRUCTURAL-ANALYSIS; NATURAL FREQUENCY; MODE SHAPE; APPROXIMATION; UNCERTAINTY; OPTIMIZATION;
D O I：
10.1016/j.istruc.2024.107771
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper proposes a fuzzy computational framework for dynamic response of the train-bridge system based on Chebyshev Polynomials Method (CM), and puts forward the concept of membership density function for the first time. The membership density function of fuzzy response can be conveniently and quickly calculated, according to the characteristics of the CM. The confidence level is conservatively set to 80 %, which means that the response has an 80 % membership degree as the confidence interval at this confidence level. In this paper, The CM is applied to analyze the fuzzy dynamic responses of the train-bridge coupled system with fuzzy train speed. Moreover, the influences of earthquake and large range uncertainty are also discussed. The conventional Scanning Method (SM) is used to verify the accuracy and feasibility of the CM. The results show that the CM can be combined with fuzzy system accurately and efficiently.
引用
收藏
页数：16
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