ANALISIS PERILAKU SIKLIK DEFLEKSI KEPALA TIANG DENGAN MENGGUNAKAN PROGRAM LPILE

RAMADHANY, NADINE (2026) ANALISIS PERILAKU SIKLIK DEFLEKSI KEPALA TIANG DENGAN MENGGUNAKAN PROGRAM LPILE. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

Fondasi tiang tidak hanya menerima beban aksial, tetapi juga Gaya Lateral akibat gempa, angin, dan tekanan tanah. Gaya Lateral dapat bekerja secara statik maupun siklik, yang memengaruhi respons deformasi dan kapasitas lateral tiang akibat interaksi tanah–struktur. Penelitian ini bertujuan menganalisis pengaruh diameter, panjang, jenis tiang (tiang pancang dan tiang bor), jenis tanah (lempung dan pasir), serta jenis pembebanan terhadap respons lateral fondasi tiang. Variasi diameter yang digunakan adalah 400 mm, 500 mm, 600 mm, 800 mm, 1000 mm, dan 1200 mm, dengan panjang tiang 10 m, 20 m, 40 m, dan 60 m. Analisis dilakukan menggunakan program LPILE berbasis metode p–y curve dan teori balok pada media elastis. Output utama yang dianalisis meliputi hubungan gaya lateral– defleksi serta perbandingan respons pada kondisi free head dan fixed head. Hasil penelitian menunjukkan bahwa peningkatan diameter secara signifikan menurunkan defleksi dan meningkatkan kapasitas lateral. Pengaruh panjang tiang cenderung signifikan hingga mencapai panjang kritis, setelah itu peningkatan panjang tidak memberikan perubahan berarti. Kondisi fixed head menghasilkan defleksi lebih kecil dibandingkan free head. Pembebanan siklik menunjukkan defleksi sedikit lebih besar dibandingkan statik akibat degradasi kekakuan tanah. Pile foundations are subjected not only to axial loads but also to lateral loads caused by earthquakes, wind, and earth pressure. Lateral loads may act under static or cyclic conditions, influencing pile deformation and lateral capacity due to soil–structure interaction. This study analyzes the effects of pile diameter, pile length, pile type (driven and bored piles), soil type (clay and sand), and loading conditions on the lateral behavior of piles. Pile diameters of 400 mm, 500 mm, 600 mm, 800 mm, 1000 mm, and 1200 mm were evaluated with lengths of 10 m, 20 m, 40 m, and 60 m. The analysis was performed using the LPILE program based on the p–y curve method and beam on elastic foundation theory. The main outputs include load–deflection relationships and comparisons between free head and fixed head conditions. The results indicate that increasing pile diameter significantly reduces lateral deflection and increases lateral capacity. The influence of pile length is significant up to the critical length, beyond which additional length provides minimal improvement. Fixed head conditions produce smaller deflections than free head conditions. Cyclic loading results in slightly larger deflections compared to static loading due to soil stiffness degradation.

Item Type:	Thesis (S1)
NIM/NIDN Creators:	41122010086
Uncontrolled Keywords:	fondasi tiang, beban lateral, LPILE, pembebanan siklik, defleksi.
Subjects:	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
Divisions:	Fakultas Teknik > Teknik Sipil
Depositing User:	Haqi ar rachma nur
Date Deposited:	02 Apr 2026 03:53
Last Modified:	02 Apr 2026 03:53
URI:	http://repository.mercubuana.ac.id/id/eprint/101375

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