Evaluasi Perkuatan Tanah Eksisting dan Perencanaan Perkuatan Tanah Alternatif dengan Micropiles dan Mortar Busa Studi Kasus: Proyek Jalan Tol Pasuruan–Probolinggo Seksi 4 STA 37+800–STA 38+250

Yulistio, Nanda Arya (2024) Evaluasi Perkuatan Tanah Eksisting dan Perencanaan Perkuatan Tanah Alternatif dengan Micropiles dan Mortar Busa Studi Kasus: Proyek Jalan Tol Pasuruan–Probolinggo Seksi 4 STA 37+800–STA 38+250. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

menghubungkan Pasuruan dan Probolinggo di Jawa Timur dengan panjang total 43,75 km. Pada seksi 4 jalan tol Pasuruan-Probolinggo STA 37+800 – 38+250 terdapat pekerjaan timbunan setinggi 2,5 m – 8,4 m. Ketika proses penimbunan, terjadi masalah yaitu tanah ambles yang berlebih setelah dilewati alat berat yang diduga akibat perbedaan kualitas tanah pada beberapa tempat. Dilakukan uji N-SPT ulang pada STA 37+800 – 38+250 yang menunjukan bahwa terdapat lapisan tanah sangat lunak pada kedalaman yang bervariasi. Oleh karena itu, diperlukan perkuatan tanah untuk sepanjang STA 37+800 – 38+250 yang mampu menahan beban-beban di atasnya. Pada STA 37+800 – 38+250, telah direncanakan penggantian tanah dengan perkuatan geotekstile. Pada tugas akhir ini akan mengevaluasi perencanaan perkuatan eksisting dan merencanakan alternatif perkuatan tanah yang aman dan stabil. Proses perencanaan perkuatan diawali studi literatur dan pengumpulan data sekunder yang meliputi data umum proyek, site layout, desain perencanaan timbunan, dan data tanah. Dari data sekunder yang diperoleh, dilakukan analisis data tanah dan analisis pembebanan untuk perencanaan perbaikan. Alternatif perkuatan yang akan direncanakan adalah memasang perkuatan Micropiles dan mortar busa. Perencanaan perkuatan dikontrol dengan cek stabilitas timbunan dan rate of settlement. Setelah stabilitas timbunan dan rate of settlement dinilai aman, dilakukan perhitungan volume dan biaya untuk setiap perencanaan perkuatan untuk membandingkan efisiensi perkuatan dari aspek biaya untuk tiap zona. Mortar busa direncanakan dengan mengganti komposisi timbunan menjadi 50% Mortar Busa 50% Tanah sirtu dan 100% Mortar Busa. Micropiles digunakan dengan spun piles diameter 80 cm. 6. Biaya material paling efisien untuk setiap zona yaitu pada zona 1, 4, dan 5 dengan timbunan tanah sirtu tanpa perkuatan tambahan. Pada zona 2 dan 3 dengan perkuatan eksisting berupa timbunan tanah sirtu, penggantian tanah asli, dan geotekstile.
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The Pasuruan – Probolinggo toll road is part of the Trans Java toll road that connects Pasuruan and Probolinggo in East Java with a total length of 43.75 km. In section 4 of the Pasuruan-Probolinggo toll road STA 37+800 – 38+250, there are embankment works ranging from 2.5 m to 8.4 m high. During the embankment process, there was a problem of excessive soil settlement after heavy equipment passed through, suspected to be due to differences in soil quality in some places. Repeated N-SPT tests were conducted at STA 37+800 – 38+250, indicating the presence of very soft soil layers at varying depths. Therefore, soil reinforcement is needed along STA 37+800 – 38+250 capable of supporting the loads above it. At STA 37+800 – 38+250, soil replacement with geotextile reinforcement has been planned. This thesis will evaluate the existing reinforcement planning and design alternative safe and stable soil reinforcement. The reinforcement planning process begins with literature study and secondary data collection including project general data, site layout, embankment planning design, and soil data. From the obtained secondary data, soil data analysis and loading analysis for improvement planning are performed. The planned reinforcement alternative is to install micro piles and foam mortar reinforcement. Reinforcement planning will include embankment stability checks and rate of settlement analysis. Once embankment stability and settlement rate are deemed safe, volume and cost calculations will be made for each reinforcement planning to compare reinforcement efficiency from a cost perspective. The foam mortar is planned by replacing the embankment composition to 50% Foam Mortar 50% Sandy Soil and 100% Foam Mortar. Piles are used with spun piles of 80 cm diameter. The most cost-efficient material for each zone is in Zones 1, 4, and 5 using gravel soil embankments without additional reinforcement. In Zones 2 and 3, the existing reinforcement consists of gravel soil embankments, replacement of original soil, and geotextiles.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Stabilitas Timbunan, Timbunan Jalan Tol, Micropiles, Mortar Busa, Embankment Stability, Toll Road Embankment, Micro Piles, Foam Mortar
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA749 Soil stabilization
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Nanda Arya Yulistio
Date Deposited:	05 Aug 2024 02:57
Last Modified:	05 Aug 2024 02:57
URI:	http://repository.its.ac.id/id/eprint/111181

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