PERENCANAAN ULANG FONDASI TIANG BOR MENJADI TIANG PANCANG DENGAN VARIASI DIMENSI PADA JEMBATAN LOBAWANG PROYEK JALAN TOL PROBOLINGGO – BANYUWANGI PAKET 3

ABIDIN AL HABSYI, ALI ZAINAL (2025) PERENCANAAN ULANG FONDASI TIANG BOR MENJADI TIANG PANCANG DENGAN VARIASI DIMENSI PADA JEMBATAN LOBAWANG PROYEK JALAN TOL PROBOLINGGO – BANYUWANGI PAKET 3. Diploma thesis, Universitas Pembangunan Nasional Veteran Jawa Timur.

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Abstract

Foundation is a crucial element in ensuring the stability and safety of building structures, especially in infrastructure projects such as the Lobawang Bridge in the Probolinggo–Banyuwangi Toll Road Project Package 3. The soil conditions at the research location consist of a clay silt layer at the top and dense sand at the bottom up to a depth of 30 meters, thus requiring an effective and efficient foundation method. The pre-boring method becomes one of the good choices to overcome these soil conditions, by conducting initial drilling in the hard soil layer so that the pile can be installed easily and without the risk of structural damage. This method is able to accelerate the pile installation process, making it a good option to use. This study aims to evaluate the use of pre-bored piles as an alternative to bored piles, with diameter variations of 0.8 m, 1.0 m, and 1.2 m. The evaluation is carried out through bearing capacity calculations using the Nakazawa method, settlement analysis with the Vesic method, as well as numerical modelling using PLAXIS software. The results indicate that the most effective and efficient foundation configuration—based on bearing capacity, deflection, and settlement obtained from both analytical and numerical analyses—is a pre-bored pile foundation with a 1200 mm diameter and 24 piles. The group pile bearing capacity reached 7,071.45 tons, with deflection remaining within the safe limit (< 6 mm), and settlement from PLAXIS simulation recorded at 22.2 mm. Moreover, the total construction volume was 178,128 m² with a completion time of 32 working days, effectively reducing the construction duration by 64 days compared to the eksisting design. Keyowrds: Bearing Capacity, Bored Pile, Pre-Boring, Pile, Plaxis, Settlement

Item Type:

Thesis (Diploma)

Contributors:

Contribution	Contributors	NIDN/NIDK	Email
Thesis advisor	Solin, Dian Purnamawati	0004038907	diansolin.ts@upnjatim.ac.id
UNSPECIFIED	Farichah, Himatul	Dian Purnamawati	himatul_farichah.ts@upnjatim.ac.id,

Subjects:

T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TE Highway engineering. Roads and pavements
T Technology > TG Bridge engineering

Divisions:

Faculty of Engineering > Departement of Civil Engineering

Depositing User:

ALI ALHABSYI

Date Deposited:

20 Jun 2025 03:10

Last Modified:

20 Jun 2025 03:10

URI:

https://repository.upnjatim.ac.id/id/eprint/38787