JOURNAL OF ROCK MECHANICS

JOURNAL OF ROCK MECHANICS

Distribution function of random variable of shotcrete lining thickness in temporary tunnel support

Document Type : Original Article

Authors
Farnoosh Basaligheh
Ali Keyhani
Faculty of Civil Engineering, Shahrood University of Technology, Iran.
Abstract
One of the most important issues in the reliability analysis of any structure is the correct knowledge of the distribution of the random variables of this analysis subset, which is obtained based on the realities of the construction of this type of structure in executive projects. In this research, an attempt has been made to propose an appropriate distribution function for the thickness of shotcrete cover in temporary maintenance of tunnels, based on the available statistical information obtained from the impressions of a project under construction in Iran. For this purpose, different distribution functions have been determined using three methods of goodness-of-fit tests, evaluation and best-fit distribution functions. Considering the results obtained from all three methods, the Generalized Extreme Value distribution for the thickness of shotcrete is proposed.
Keywords
Tunnel
Temporary Storage
Reliability
Shotcrete
Probability Density Function
Random Variable
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JOURNAL OF ROCK MECHANICS
Volume 1, Issue 1
Spring 2017
Pages 55-67