Alternative Design of the Soil Reinforcement for Cut and Fill Areas and Liquefaction Potential Analysis (Case Study: PT. Pertamina Grassroot Refinery & Petrochemical in Tuban, East Java)

Buana, Rizky Satria Surya (2024) Alternative Design of the Soil Reinforcement for Cut and Fill Areas and Liquefaction Potential Analysis (Case Study: PT. Pertamina Grassroot Refinery & Petrochemical in Tuban, East Java). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

PT. The Grassroot Refinery and Petrochemical Complex of Pertamina (PT. PRPP) in Tuban, East Java is situated in an area characterized by a diverse topography, with potential for liquefaction, particularly in Area 1. This topic is addressed in the final project, which defines the potential for liquefaction based on soil zonification. The potential for liquefaction must be considered in light of the seismic zones that occur in the coastal areas of Tuban, which reach up to 6.6 on the Richter scale. Given the high frequency of earthquakes in this area, such zones warrant particular attention. Moreover, this topic offers insights into alternative soil reinforcement methods for cut-and-fill operations in the oil refinery area.
In order to evaluate the problem and design the reinforcement, it is necessary to identify the soil zonification through a statistical method and determine the required geometry and levelling. Additionally, the potential for liquefaction must be assessed based on the initial conditions, and the slope stability must be evaluated to ascertain whether reinforcement is ecessary. In the event that the requisite criteria for slope stability are not met, the reinforcement must be designed in accordance with the specific type of fill and cut work involved. The soil reinforcement for fill areas employs gabion, while soil nailing and ground anchor are utilized for cut areas as an alternative.
In accordance with the principles of statistical theory, the soil data from this area can be visualized in three distinct zones, characterized by the presence of clay and limestone. The initial conditions indicate that there is no potential for liquefaction, and that no soil improvement is necessary. For the filling area, a three-layer gabion of 1 m x 1 m, and a one-layer gabion of 1 m x 0.5 m are used for embankment heights of 5 m, 4 m, and 1.5 m respectively. When the cutting height is between 8 and 10 meters in zone 2, and between 12 and 14 meters in zone 3, a landslide happens. In this case, the reinforcement is 6, 11 meters long, D36 soil nailing for zones 3, and 4 nails with 8 meters long, D32 soil nailing for zones 2. Alternatively, 3 ground anchor 14 meters long, D36 ground anchors and 2 ground anchors 12 meters long may be utilized, along with soldier beam WF 500x300x11x18 in zones 3 and 2 for ground anchor work.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Cut and Fill, Earthquake, Gabion, Ground Anchor, Potency of Liquefaction, Oil refinery, Soil Nailing, Tuban
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA455.S6 Soil (Materials of engineering and construction) T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization T Technology > TA Engineering (General). Civil engineering (General) > TA760+ Retaining walls T Technology > TA Engineering (General). Civil engineering (General) > TA775 Foundations. T Technology > TA Engineering (General). Civil engineering (General) > TA780 Piles and pile-driving
Divisions:	Faculty of Civil Engineering and Planning > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Rizky Satria Surya Buana
Date Deposited:	02 Aug 2024 06:45
Last Modified:	02 Aug 2024 06:45
URI:	http://repository.its.ac.id/id/eprint/110431

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