MEMBANDINGKAN FAKTOR KEAMANAN DAYA DUKUNG FONDASI BORED PILE MENGGUNAKAN DATA CPT DAN DATA UJI LABORATORIUM (studi kasus: pada proyek pengendalian banjir kali bekasi paket 7)

NAYLA, SYAFA ADISTY SUKMA (2025) MEMBANDINGKAN FAKTOR KEAMANAN DAYA DUKUNG FONDASI BORED PILE MENGGUNAKAN DATA CPT DAN DATA UJI LABORATORIUM (studi kasus: pada proyek pengendalian banjir kali bekasi paket 7). S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

This study compares the safety factor (SF) analysis of bored pile foundation bearing capacity using Cone Penetration Test (CPT) data and soil laboratory testing at the Bekasi River Flood Control Project Package 7, with verification through Pile Driving Analyzer (PDA) tests. A sample consisting of one borehole point was selected via purposive sampling from secondary data of soil investigation reports and PDA tests. Analysis employed both Meyerhof and Tomlinson methods for both data sources. Ultimate bearing capacity (Qu) results showed: laboratory (Meyerhof/Tomlinson) = 1,383.10 kN, CPT Meyerhof = 4,280.55 kN, CPT Tomlinson = 4,814.205 kN, and PDA = 3,200 kN. Elastic settlement values for all methods were below the 80 mm safety threshold (laboratory: 22.581 mm; CPT Meyerhof: 25.093 mm; CPT Tomlinson: 24.481 mm; PDA: 11.5 mm). Safety factor analysis revealed that using SF=0.4 based on laboratory data resulted in bearing capacity underestimation compared to PDA data, potentially leading to structural overdesign, while CPT-based SF values were more accurate (Meyerhof: 1.220; Tomlinson: 1.053). Critical conclusions indicate: (1) The CPT-based Meyerhof method delivered optimal results (Qu=4,280.55 kN) with 25.093 mm settlement, (2) The Meyerhof approach most closely approximates PDA test results under elastic conditions, and (3) CPT-based safety factors demonstrate a stronger correlation with PDA data. Recommendations include conducting multi-point PDA validation up to maximum load, along with Pile Integrity Tests (PIT) and loading tests. The research confirms CPT methodology provides more accurate and conservative bearing capacity evaluations for bored pile foundations in the soft soil conditions of Bekasi River. Keywords: Bored Pile Foundation, Bearing Capacity, CPT, Laboratory Testing, Safety Factor Penelitian ini membandingkan faktor keamanan (FK) analisis daya dukung fondasi bored pile berdasarkan data Cone Penetration Test (CPT) dan pengujian laboratorium tanah pada Proyek Pengendalian Banjir Kali Bekasi Paket 7, dengan verifikasi uji Pile Driving Analyzer (PDA). Sampel berupa satu titik bor dipilih secara purposive sampling dari data sekunder laporan penyelidikan tanah dan PDA. Analisis menggunakan metode Meyerhof dan Tomlinson untuk kedua sumber data. Hasil perhitungan daya dukung ultimit (Qu) menunjukkan: laboratorium (Meyerhof/Tomlinson) = 1383,10 kN, CPT Meyerhof = 4280,55 kN, CPT Tomlinson = 4814,205 kN, dan PDA = 3200 kN. Nilai penurunan elastis seluruh metode berada di bawah batas aman 80 mm (laboratorium: 22,581 mm; CPT Meyerhof: 25,093 mm; CPT Tomlinson: 24,481 mm; PDA: 11,5 mm). Analisis faktor keamanan mengungkap bahwa penggunaan SF=0,4 berbasis data laboratorium menghasilkan underestimate daya dukung dengan data PDA yang berpotensi menyebabkan overdesign, sementara FK berbasis CPT lebih akurat (Meyerhof: 1,220; Tomlinson: 1,053). Kesimpulan kritis menunjukkan: (1) Metode Meyerhof berbasis CPT memberikan hasil optimal (Qu=4280,55 kN) dengan penurunan 25,093 mm, (2) Pendekatan Meyerhof paling mendekati realitas uji PDA pada kondisi elastis, dan (3) Faktor keamanan CPT berkorelasi lebih baik dengan PDA. Disarankan dilakukan pembandingan multi-data PDA hingga beban maksimum, serta uji integritas tiang (PIT) dan loading test untuk validasi. Penelitian membuktikan metode CPT lebih akurat dan konservatif untuk evaluasi daya dukung fondasi bored pile pada tanah lunak Kali Bekasi. Kata Kunci: Fondasi Bored Pile, Daya Dukung, CPT, Pengujian Laboratorium, Faktor Keamanan

Item Type:	Thesis (S1)
Call Number CD:	FT/SIP. 25 178
NIM/NIDN Creators:	41123120061
Uncontrolled Keywords:	Fondasi Bored Pile, Daya Dukung, CPT, Pengujian Laboratorium, Faktor Keamanan
Subjects:	100 Philosophy and Psychology/Filsafat dan Psikologi > 150 Psychology/Psikologi > 155 Differential and Developmental Psychology/Psikologi Diferensial dan Psikologi Perkembangan > 155.9 Environmental Psychology/Psikologi Lingkungan > 155.96 Influence of Restrictive Environments/Pengaruh Lingkungan Perbatasan > 155.964 Subterranean Structures/Struktur Rahasia, Struktur Bawah Tanah 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil > 624.1 Structural Engineering and Underground Construction/Teknik Struktural dan Konstruksi Bawah Tanah 600 Technology/Teknologi > 650 Management, Public Relations, Business and Auxiliary Service/Manajemen, Hubungan Masyarakat, Bisnis dan Ilmu yang Berkaitan > 658 General Management/Manajemen Umum
Divisions:	Fakultas Teknik > Teknik Sipil
Depositing User:	khalimah
Date Deposited:	10 Oct 2025 07:59
Last Modified:	10 Oct 2025 07:59
URI:	http://repository.mercubuana.ac.id/id/eprint/99013

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