ANALISIS PERILAKU TIMBUNAN DENGAN PERKUATAN GEOSINTETIK MENGGUNAKAN SOFTWARE PLAXIS
The problems on the road embankment soil structure located above the soft soil with high water table require practical and effective solutions. The high operational loading and the soft base soil with its soaked condition causing nonuniform settlement which endanger the stabilization of the road. Ge...
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| Main Authors: | , |
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| Format: | Theses and Dissertations NonPeerReviewed |
| Published: |
[Yogyakarta] : Universitas Gadjah Mada
2012
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| Subjects: | |
| Online Access: | https://repository.ugm.ac.id/99506/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=55330 |
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| Institution: | Universitas Gadjah Mada |
| Summary: | The problems on the road embankment soil structure located above the
soft soil with high water table require practical and effective solutions. The high
operational loading and the soft base soil with its soaked condition causing nonuniform
settlement which endanger the stabilization of the road. Geosynthetic
reinforcement expected to be the best solution by relying on the ability of tensile
strength. Stability of reinforced embankment structure influenced by several
aspects, namely the design based on the collapse analysis and selection of
appropriate reinforcing material, control in field either during the installation of
reinforcing materials, stockpiling and maintenance for a certain period.
This analysis reviewed stress-strain behavior of geosynthtic as
reinforcement and safety factor analysis that happens to construction of
embankment Toll Road Semarang � Solo especially on the Stage I in Part
Semarang � Bawen Section I: Tembalang � Gedawang based on finite element
method using software PLAXIS. The soil and geosynthetiic modeled two
dimensional as plane strain with Mohr � Coulomb material model as elastoplastic
non linear. Comparison made between embankment with and without
reinforcement to determine the effectiveness of the geosynthetic use. This analysis
was done with variations of the reinforcement strength and value of interface
based on variations of geosynthetic type. Traffic load and earthquake simulated to
determine the stability of embankment on the operational condition.
The bearing capacity of subgrade in this construction equals to 1035,524
kN/m2. It is compared with the embankment load, the subgrade is capable of
receiving 4 meters of embankment height, but the embankment carried out in
stages to easier implementation. 164,76 days as result of the duration
consolidation is used as a validation data of the finite element analysis.
Installation of reinforcement can replace the low shear strength when
consolidation process or during increasing of pore water pressure, but did not
reduce total settlement due to the embankment load. Variations in the value of
normal stiffness and an interface based on the variations of materials type greatly
influence the results of the analysis and output of the PLAXIS software. In this
study, geotextile non woven reinforcement able to rely on the stability stress and
strain of the material as well as increase the safety factor significantly, from 1,27
as safety factor of embankment without reinforcement to 1,35. |
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