Journal Name:
- International Journal of Science and Engineering Investigations
| Author Name | University of Author |
|---|---|
Abstract (2. Language):
Design of support system in weak rocks has some
special challenges to the geotechnical engineer because in these
rocks very large forces will be applied to support systems of
tunnels. The form and function of the support will vary
according to a wide range of factors and it would seem that for
every different tunnel there is a different lining solution. Using
the lining hinge, the lining will be free to rotate about the
hinge, and a zero bending moment condition will be enforced
at that point, but axial force and shear force in the lining can be
transmitted across the hinge location. The lining hinge can be
added to the beam elements. The effect of the lining hinge on
the lining of tunnels was analyzed by means of modeling the
circular and horseshoe tunnels in shale rocks using the finite
element program Phase2. The results of the evaluations show
that lining hinge has no effect on the axial force of lining of
tunnels, but it cause the shear force and bending moment of
lining to be reduced. Furthermore, in horseshoe tunnels the
effect of lining hinge in reducing loads on the lining is more
specific than circular tunnels.
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