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http://dx.doi.org/10.14481/jkges.2011.12.11.3

Modification of Terzaghi's Earth Pressure Formula on Tunnel Considering Dilatancy of Soil  

Han, Heui-Soo (금오공과대학교 토목공학과)
Cho, Jae-Ho (금오공과대학교 대학원 토목공학과)
Yang, Nam-Yong (금오공과대학교 대학원 토목공학과)
Shin, Baek-Chul (금오공과대학교 대학원 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.12, no.11, 2011 , pp. 23-30 More about this Journal
Abstract
In this study, Terzaghi's formula was modified to solve problems considering the dilatancy effect of the soil for estimating the earth pressure acting on tunnel. It is performed for the comparison with Terzaghi's formula and modified Terzaghi's formula, tunnel model test result of Kobe University Rock Mechanics Laboratory. From comparison results of the earth pressure acting on tunnel, the earth pressure calculated by the Terzaghi's formula was estimated largest value. The earth pressure measured through the tunnel model test was least value. The difference between the earth pressure derived from Terzaghi's original formula and that derived from the modified formula was caused by the dilation effect, which was caused by the soil volume change. The difference between the earth pressure derived from the modified formula and the earth pressure measured through the tunnel model test, earth pressure results from the energy making failure surface. The results of FEM analysis were almost consistent with the results of mathematical analysis.
Keywords
Shallow tunnel; Terzaghi's earth pressure formula; Arching effect; Finite element method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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