Bariq, Muhammad Rafi Abhista and Dr. Eng. Yulvi Zaika, MT. and Prof. Dr. Ir. As’ad Munawiir, MT. (2021) Pengaruh perbedaan diameter pile terhadap stabilitas lereng dengan menggunakan kepadatan pasir Dr 88% Posisi lx 0.9 dan 0.4. Sarjana thesis, Universitas Brawijaya.
Abstract
Bencana merupakan suatu peristiwa yang mengancam dan mengganggu. Masyarakat yang tinggal di lereng gunung curam, menghadapi risiko kemungkinan terjadinya tanah longsor, Kondisi struktur yang beraneka seperti daerah lereng berpotensi menimbulkan kelongsoran akibat tanah yang kurang stabil. Sehingga diperlukan pencegahan – pencegahan terjadinya tanah longsor dengan menggunakan media pile. Hubungan pile dengan tanah mengalami pembebanan yang kompleks, oleh karena itu perlu dilakukan penelitian untuk mengetahui pengaruh perbedaan diameter pile terhadap stabilitas lereng Tujuan dari penelitian ini untuk mengetahui jenis kelongsoran yang terjadi pada lereng dengan jenis tanah berpasir, mengetahui pengaruh variasi diameter pile pada lereng dan analisis peningkatan faktor keamanan pada lereng, mengetahui diameter pile optimum yang dapat menahan kelongsoran pada beban maksimum sampai lereng mengalami keruntuhan, dan untuk mengetahui jumlah peningkatan faktor keamanan yang didapatkan dari pengaruh variasi diameter pada perkuatan lereng. Pada penelitian ini sarana pile digunakan sebagai media penahan longsor, dengan metode penelitian yang digunakan dengan cara memasukkan pasir ke box modelling sebanyak 7 lapis menggunakan ketebalan setiap lapis 10 cm, setelah itu dipadatkan menggunakan silinder beton sebanyak 15 lintasan dan dicek kembali menggunakan cawan agar kepadatan pasir sesuai dengan kepadatan rencana. Hasil kepadatan lereng kemudian diberikan pile sedalam 60 cm dengan jarak tiap pile setiap 10 cm, kemudian dilakukan pemotongan lereng dengan sudut 500. Kemudian dilakukan pengecekan dan pembacaan sebanyak 3 kali mengenai perubahan yang terjadi oleh alat. bantu dan diberi pondasi dengan jarak 5 cm dari tepi lereng. Hasil penelitian diperoleh jenis keruntuhan yang terjadi pada lereng dengan tanah jenis tanah berpasir tanpa perkuatan merupakan keruntuhan pada kaki lereng, sedangkan dengan perkuatan merupakan keruntuhan pada badan lereng. Sehingga dapat disimpulkan bahwa perkuatan pada lereng menggunakan tiang meningkatkan
English Abstract
Disaster is an event that threatens and disturbs. People living on steep mountain slopes are at risk of possible landslides. Various structural conditions such as slope areas have the potential to cause landslides due to unstable soil. So it is necessary to prevent the occurrence of landslides by using pile media. The pile relationship with the soil is subjected to complex loading, therefore it is necessary to conduct research to determine the effect of different pile diameters on slope stability The purpose of this study was to determine the types of landslides that occur on slopes with sandy soil types, to determine the effect of pile diameter variations on the slopes and to analyze the increase in safety factors on slopes, to determine the optimum pile diameter that can withstand landslides at maximum load until the slope collapses, and to determine the amount of increase in the safety factor obtained from the effect of diameter variations on slope reinforcement. In this study the pile facility was used as a landslide barrier media, with the research method used by inserting sand into the modeling box as much as 7 layers using a thickness of each layer of 10 cm, after that it was compacted using a concrete cylinder as many as 15 passes and checked again using a cup so that the density of the sand according to the density of the plan. The results of the slope density are then given a pile as deep as 60 cm with a distance of each pile every 10 cm, then the slope is cut at an angle of 500. Then checks and reads 3 times regarding the changes that occur by the tool. and given a foundation with a distance of 5 cm from the edge of the slope. The results showed that the type of failure that occurred on the slopes with sandy soil type soil without reinforcement was a failure at the foot of the slope, while with reinforcement was a failure on the slope body. So it can be concluded that the reinforcement of the slopes using piles increases the stability of the slopes. The optimum pile diameter is at the largest diameter at D2/D1 = 0.68, so the larger the pile diameter, the greater the safety factor. From the modeling obtained diameter D2/D1 = 0.68 at the largest maximum load of 0.851. So it is concluded that reinforcement on the slopes using piles can be used to increase the strength of the slopes against landslides. And in the 2D FEM application analysis, the slope safety value from the unreinforced slope to the 2-pillar reinforced slope increases to 0.321 in 3D FEM, so it can be concluded that slope reinforcement using 2 rows of piles can increase safet
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | 0521070262 |
| Uncontrolled Keywords: | Kata Kunci: Lereng, Longsor, Pile, FEM, Factor Of Safety |
| Subjects: | 600 Technology (Applied sciences) > 624 Civil engineering |
| Divisions: | Fakultas Teknik > Teknik Sipil |
| Depositing User: | yulia Chasanah |
| Date Deposited: | 10 Feb 2022 03:53 |
| Last Modified: | 22 Feb 2022 07:23 |
| URI: | http://repository.ub.ac.id/id/eprint/189667 |
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