|تعداد مشاهده مقاله||103,614,284|
|تعداد دریافت فایل اصل مقاله||81,460,504|
Reliability Assessment of Shallow Domes Using a Semi-Empirical Evaluation Procedure
|Civil Engineering Infrastructures Journal|
|مقاله 5، دوره 52، شماره 2، اسفند 2019، صفحه 277-293 اصل مقاله (1003.36 K)|
|نوع مقاله: Research Papers|
|شناسه دیجیتال (DOI): 10.22059/ceij.2019.261794.1500|
|Hossein Karimi1؛ Iradj Mahmoudzadeh Kani 2|
|1Ph.D. Candidate of Structural Engineering, School of Civil Engineering, Faculty of Engineering, Univ. of Tehran|
|Like other structures, shallow domes have imperfections from the prescribed values obtained by specifications during the construction process. Specifications define some tolerance values for imperfections. Despite consideration of these values, the critical load of a dome varies for each imperfection pattern. So the reliability plays an important role in domes safety. Theoretical evaluation procedure is the most accurate one to obtain reliability function, but it is only applicable to small structures. Semi-empirical evaluation procedure, on the other hand, is more implemented. In the present research reliability of real domes with stochastic initial imperfections has been investigated by comparing finite elements method, theoretical and semi-empirical results. Also, it has been shown that the automatic perturbed analysis is not sufficiently reliable for domes. So it is recommend that a suitable safety factor be applied on the automatic perturbed load or the method utilized in this paper be used to obtain the critical load – reliability diagram.|
|Bifurcation؛ Finite Elements Method؛ Monte Carlo Method؛ Reliability؛ Shallow Domes|
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