Reliability Assessment of Shear in Shortlink Beam

Publish Year: 1394
نوع سند: مقاله کنفرانسی
زبان: English
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ICCE10_0249

تاریخ نمایه سازی: 19 تیر 1394

Abstract:

This paper presents the results of research in reliability of short seismic links in shear based on experiments. Four types of short links were analyzed, each having the same cross section and the same length, but with different number of web stiffeners. The main purpose of the stiffeners is to preserve buckling of the seismic link web, i.e. to achieve plastification of the cross section by shear. The design model of shear resistance according to Euro code 8 is applicable only to short links without web stiffeners. By adding the web stiffeners nonlinear inelastic behavior of short seismic links differs depending on the number of stiffeners, so that the calculation model of shear resistance according to Euro code 8 for short seismic link with stiffeners must be corrected. This fact is considered by introducing the correction factors that were determined from the laboratory tests conducted on 16 specimens. On the base of experiments in the second part of this paper the reliability of short seismic link is performed by forming limit state equations. These equations are formed by using the stochastic model, i.e. by describing the statistical nature of basic variables calculating the reliability index as an operational value of failure probability. The reliability level was determined by using the probabilistic analysis based on the first order reliability method (FORM) which resulted with the conclusion that the short seismic links with two and three couples of web stiffeners designed according to requirements of Euro code 8 have enough reliability for the reliability class RC2 and the mean recurrence interval (MRI) of 50

Authors

Saeed Bozorgmehrnia

PhD Candidate of Structure Engineering, Semnan University, Semnan, Iran

Majid GHolhaki

Assistant Professor at Civil Engineering Faculty of Semnan University, Semnan, Iran

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