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http://dx.doi.org/10.9711/KTAJ.2016.18.5.377

Experimental analysis for the effect of integrated pipe-roof in trenchless method  

Sim, Youngjong (Land and Housing Institute)
Jin, Kyu-Nam (Land and Housing Institute)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.18, no.5, 2016 , pp. 377-387 More about this Journal
Abstract
In recent, in case that the underpass is constructed by trenchless method, its stability increases by reinforcing steel pipe with re-bar and mortar after propulsion into the ground to form pipe-roof. Therefore, it can be predicted that the integrated pipe-roof decreases the stress acting on the underpass by sharing load. In this study, to analyze the effect of integrated pipe-roof and behavior of stress around underpass, experimental tests for the rectangular and arch cross section of the underpass are performed using soil chamber. As a result, stress and strain acting on the underpass decrease due to sharing load by integrated pipe-roof. This phenomenon is more pronounced by increasing the stiffness of pipe-roof. Furthermore it can be expected that cross-section of underpass can be economically designed.
Keywords
Trenchless method; Integrated pipe-roof; Stiffness; Soil chamber;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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