Fuzzy Comprehensive Evaluation on the Failure Mode Having Initial Imperfection Shell
The two failure modes of shell structure, dynamic instability and intensive destruction, have no distinct boundary on their structural performance; they are fuzzy and are difficult to determine problems. By using the comprehensive evaluation method in fuzzy mathematics and taking the initial imperfection of the structure into consideration, this paper, taking Kiewitt spherical shell as an example, made parameter impact analysis to the structure, and investigated the influence of span ratios, the initial geometric imperfections and bar cross-section of the structure under earthquake failure mode. Ensuring the relations between a variety of response factors of the structure and fuzzy failure modes, the paper established a power failure mode shell structure of fuzzy comprehensive evaluation model and evaluation method, and described the application of the method in the discrimination of failure mode on Kiewitt monolayer Shell with initial defect; the consequences showed that this method can solve the problem of failure mode identification better with more realistic facts and possesses higher accuracy.
KeywordsShell structure initial imperfection dynamic instability strength failure fuzzy comprehensive evaluation
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- 1.Boqing, G., Wenfeng, D., Linchun, B.: Studies on the single-layer network shell power failure form and the characteristics. In: Fourth session of cross-Strait structure and ground project academic seminar collection (2007)Google Scholar
- 2.Shizhao, S., Xudong, Z.: Failure mechanism of Spherical surface network shell structure under macroseism. Civil Engineering Journal 38(1), 11–20 (2005)Google Scholar
- 3.Zhongxue, L.: Influence of initial geometry flaw on net shell structure static dynamically stable supporting capacity. Civil Engineering Journal 35(1), 11–14 (2002)Google Scholar
- 4.Yibo, S.: Studies on the Macroseism Failure Mechanism Of Damaged Single-Layer Spherical Surface Network Shell. Harbin Industry University, Harbin (2007)Google Scholar
- 5.Shifeng, L., Yaohua, L.: The Fuzzy Synthesis Distinction On Mine Pit (Wells Up) Water Source. Coal Project 9(1), 71–73 (2006)Google Scholar
- 6.Zheng, W.: The Application of Fuzzy Synthesis Distinction Method on Construction Base. Western mine exploration project 11(1), 21–23 (2009)Google Scholar
- 7.Hui, F., Chengbin, Y., Zhanghu, W.: Bridge Site Choice According To Fuzzy Comprehensive Judgment. Project and the construction 20(3), 186–187 (2006)Google Scholar
- 8.Yuntong, L., Jiangbi, H.: Fuzzy evaluation mathematical model and parameter estimation. Beijing Industrial university journal 27(1), 112–115 (2001)Google Scholar
- 9.Shuili, C., Jinggong, L., Xianggong, W.: The fuzzy set theory and its application. Scientific Publishing house, Beijing (2005)Google Scholar
- 10.Xudong, Z., Feng, F., Shizhao, S.: Studies on the Macroseism Failure Mechanism Based On The Fuzzy Comprehensive Evaluation. Engineering mechanics 27(1), 63–68 (2010)Google Scholar