Analisis Stabilitas Dinding Corrugated Concrete Sheet Pile (CCSP) dengan Variasi Muka Air Tanah pada Galian Basement

Desandana, Wiweka (2026) Analisis Stabilitas Dinding Corrugated Concrete Sheet Pile (CCSP) dengan Variasi Muka Air Tanah pada Galian Basement. Undergraduate thesis, UPN Veteran Jawa Timur.

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Abstract

The construction of high-rise buildings in urban areas has increased the utilization of underground space through the construction of basements, which requires deep excavation work. In deep excavations with vertical excavation walls, wall stability becomes a critical aspect to consider, particularly due to the effects of lateral earth pressure and groundwater level conditions. One of the retaining systems used in basement excavation projects is the Corrugated Concrete Sheet Pile (CCSP). This study aims to analyze the stability of CCSP walls against variations in the groundwater level (GWL) in a 5 m deep basement excavation with a CCSP embedment depth of 14 m, using two sets of soil investigation data N-SPT and CPTu, and two analysis methods: the manual limit equilibrium method (LEM) and the finite element method (FEM) using PLAXIS 2D, across three GWL scenarios (0,5 m; 2,0 m; 6,0 m). For the BH-2 data, the LEM results show strutting forces of 109,36 – 134,16 kN/m with a capacity of ≤ 122,4 kN/m, and a maximum bending moment of 322,65 - 415,92 kN.m/m with a capacity of ≤ 307 kN·m/m, and a global safety factor (SF) of 1,365 – 1,826 with a minimum requirement of ≥ 1,5; the constant basal heave safety factor is 1,890 with a minimum requirement of 1,25; while the FEM results show strutting forces of 104,92 – 125,90 kN/m, a maximum bending moment of 161,80 – 179,30 kN·m/m, a global safety factor of 2,361 – 2,421, and lateral deformation of 0,02016 – 0,02294 m with a requirement of ≤ 0,02500 m. For the CPTu-2 data, the LEM results show strut forces of 108,61 – 134,29 kN/m, a maximum bending moment of 296,24 – 390,96 kN·m/m, and a global safety factor of 1,029 – 1,415, with the piping safety factor ranging from 2,490 to 3,185; while the FEM results show strutting forces of 132,06 – 140,96 kN/m, maximum bending moments of 236,20 – 251,30 kN·m/m, a global safety factor of 1,624 – 1,661, and lateral deformations of 0,02560 – 0,02638 m. Variations in GWL consistently affect all stability parameters in both methods and for both soil datasets, with GWL of 0,5 m representing the most critical condition and GWL of 6,0 m representing the most stable condition.

Item Type:

Thesis (Undergraduate)

Contributors:

Contribution	Contributors	NIDN/NIDK	Email
Thesis advisor	Firmansyah, Yerry Kahaditu	NIDN0029018601	yerry.kahaditu.ts@upnjatim.ac.id
Thesis advisor	Aryaseta, Bagas	NIDN0025129302	bagas.aryaseta.ts@upnjatim.ac.id

Subjects:

T Technology > TA Engineering (General). Civil engineering (General)

Divisions:

Faculty of Engineering > Departement of Civil Engineering

Depositing User:

Wiweka Desandana

Date Deposited:

09 Sep 2026 02:23

Last Modified:

09 Sep 2026 03:06

URI:

https://repository.upnjatim.ac.id/id/eprint/60089