SUKMANA, ABIMANYU NADITRA JAMALU (2025) ANALISA PERBANDINGAN DAYA DUKUNG FONDASI MENGGUNAKAN DATA STANDART PENETRATION TEST DENGAN PILE DRIVING ANALYZER DAN PENURUNAN (STUDI KASUS JEMBATAN CHIASEM PADA PROYEK JALAN TOL AKSES PATIMBAN PAKET 1). S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
The construction of toll road infrastructure, such as the Chiasem Bridge on the Patimban access toll road project, demands a meticulous geotechnical analysis of its pile foundation to ensure the structure's safety and stability. This research aims to comprehensively analyze the axial and lateral bearing capacity, settlement, and liquefaction potential of the bridge's pile foundation. The analysis was conducted by comparing the single pile bearing capacity using theoretical methods (Meyerhof 1976, Schmertmann 1967, and Brown 2001) with the results of a Pile Driving Analyzer (PDA) field test, calculating the pile group bearing capacity and efficiency, analyzing elastic and consolidation settlement, assessing the lateral capacity using Broms' (1964) method, and identifying liquefaction potential. The results show that the Schmertmann (386.44 tons) and Brown (410.10 tons) methods provide axial bearing capacity estimates that most closely approximate the PDA test results, while the Meyerhof (231.54 tons) method was the most conservative estimation. After analyzing the pile group capacity, it was found that the pile configuration in the initial Detail Engineering Design (DED), after considering group efficiency, was insufficient to support the entire structural load. However, the analysis of settlement due to service load reveals that the settlement satisfies the allowable criteria based on SNI 8460:2017. Meanwhile, the lateral capacity analysis shows that the resulting deflection is within safe limits, and the research location was identified as having no potential for liquefaction. This study produces a recommended alternative for the foundation design modification of the Chiasem Bridge. Keywords: Pile bearing capacity, Group pile, settlement, PDA, Lateral deflection, liquefaction Pembangunan infrastruktur jalan tol, seperti Jembatan Chiasem pada proyek jalan tol akses Patimban, menuntut analisis geoteknik yang cermat pada fondasi tiang pancang untuk menjamin keamanan dan stabilitas struktur. Penelitian ini bertujuan untuk menganalisis secara komprehensif kapasitas daya dukung aksial dan lateral, penurunan, serta potensi likuifaksi pada fondasi tiang pancang jembatan tersebut. Analisis dilakukan dengan membandingkan kapasitas dukung tiang tunggal menggunakan metode teoritis (Meyerhof 1976, Schmertmann 1967, dan Brown 2001) dengan hasil uji lapangan Pile Driving Analyzer (PDA), menghitung daya dukung dan efisiensi tiang kelompok, menganalisis penurunan elastis dan konsolidasi, mengkaji kapasitas lateral dengan metode Broms (1964), dan mengidentifikasi potensi likuifaksi. Hasil analisis menunjukkan bahwa metode Schmertmann (386.44 ton) dan Brown (410.10 ton) memberikan estimasi daya dukung aksial yang paling mendekati hasil uji PDA sementara metode Meyerhof (231.54 ton) menjadi metode estimasi daya dukung yang paling konservatif. Setelah menganalisa daya dukung tiang kelompok ditemukan bahwa konfigurasi tiang pada Detail Engineering Design (DED) awal, setelah mempertimbangkan efisiensi kelompok, belum mampu memikul beban struktur secara keseluruhan. Namun, analisis penurunan akibat beban layan menunjukkan bahwa penurunan yang terjadi sudah memenuhi batas izin berdasarkan SNI 8460:2017. Sementara itu, analisis daya dukung lateral menunjukkan defleksi yang terjadi masih dalam batas aman, dan lokasi penelitian teridentifikasi tidak berpotensi mengalami likuifaksi. Penelitian ini menghasilkan rekomendasi alternatif perubahan desain fondasi pada Jembatan Chiasem. Kata Kunci: Daya dukung tiang, Tiang kelompok, Penurunan fondasi, PDA, Defleksi lateral, likuifaksi
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