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All Journal Construction and Material Journal Mitra Akademia: Jurnal Pengabdian Masyarakat Journal of Applied Civil Engineering and Infrastructure Technology (JACEIT) JURNAL POLI-TEKNOLOGI Journal of Research and Inovation in Civil Engineering as Applied Science
Andikanoza Pradiptiya
Poilteknik Negeri Jakarta
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Journal : JURNAL POLI-TEKNOLOGI

 1 
MOBILIZATION OF MINI PILE UPLIFT RESISTANCE IN SAND Andikanoza Pradiptiya; Yuwono Yuwono; Handi Sudardja; Istiatun Istiatun
Jurnal Poli-Teknologi Vol. 14 No. 1 (2015)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v14i1.728

Abstract

Abstract Shaft resistance of tension pile will be fully mobilized at certain displacement. Some structures impose limits to the displacement of pile with a relatively small value in order not to cause damage. Therefore, it is necessary to know the behavior of pile resistance reaction against load that works in every displacement. The study was conducted using the model of single pile made of concrete with a length of 0,2 m ; 0,3 m ; 0,4 m and each diameter 0,02 m ; 0,03 m ; 0,04 m. The model pile is jacked in sand that has been compacted in a box and then given uplift load that refers to the ASTM D3689-07 procedure E. Pile resistance reaction is shown by pile friction modulus and determined by mobilized unit shaft resistance and pile displacement relationship. The results showed that mobilization of uplift resistance of mini pile that has been counted using friction modulus can only approach the value of true observations, so that it requires further consideration as design parameter. Keywords : Mini pile, sand , uplift resistance.
UJI TAHANAN GESEK MODEL FONDASI TIANG TERHADAP PERPINDAHAN KECIL DI DALAM BOX UJI Andikanoza Pradiptiya; Yuwono Yuwono
Jurnal Poli-Teknologi Vol. 15 No. 1 (2016)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v15i1.779

Abstract

ABSTRACT Some buildings imposes limits to pile foundation displacement with relatively small value so as not to cause damage to the structure. Loading test directly in the field requires a very high cost. To overcome this problem, it can be approached with a more economical cost, that is to move it into a certain scale models. The method used is to create a media model as a test box testing, by simulating the actual model in the form of a scale model. This method is fairly cheap and efficient as it can be used for various models and can be used repeatedly. The study was conducted using models of reduced scale single pile foundation made of concrete with a length of 0.2 m, 0.3 m, 0.4 m and each diameter of 0.02 m, 0.03 m, 0.04 m. Pile model is jacked in clay soil that has been compacted in a box and then given a tensile load test referring to ASTM D3689-07 procedure E (Constant Rate of Uplift Test). Mobilization of frictional resistance is determined from the pile frictional resistance force and displacement of the pile. The results showed that the frictional resistance value is reduced to the value at a particular displacement or at critical displacement pile. Keywords : scaled pile foundation , test box , small displacement , clay ABSTRAK Beberapa konstruksi bangunan memberikan batasan kepada perpindahan tiang yang terjadi dengan nilai relatif kecil agar tidak menyebabkan kerusakan struktur. Uji pembebanan langsung di lapangan memerlukan biaya yang sangat tinggi. Untuk mengatasi masalah ini maka dapat dilakukan pendekatan dengan biaya yang lebih ekonomis yaitu dengan memindahkan media lapangan ke media laboratorium dengan skala model tertentu. Metode yang dipakai adalah membuat box uji model sebagai media pengujian, dengan mensimulasikan model yang sebenarnya ke dalam bentuk model skala. Metode ini cukup murah dan efisien karena dapat dipergunakan untuk berbagai model dan dapat dipergunakan secara berulang. Penelitian dilakukan menggunakan model fondasi tiang tunggal skala tereduksi yang terbuat dari beton dengan panjang 0,2 m, 0,3 m, 0,4 m dan masing-masing diameter 0,02 m, 0,03 m, 0,04 m. Model tiang dipasang dengan cara ditekan pada tanah lempung yang sudah dipadatkan dalam box uji kemudian diberikan beban tarik yang mengacu pada ASTM D3689-07 prosedur E (Constant Rate of Uplift Test). Mobilisasi tahanan gesek tiang ditentukan dari tahanan gesek satuan dan perpindahan tiang. Hasil penelitian menunjukkan bahwa nilai tahanan gesek berkurang pada nilai perpindahan tiang tertentu atau pada perpindahan tiang kritis. Kata kunci : model pondasi, box uji, perpindahan kecil, lempung
UJI TAHANAN TARIK MODEL FONDASI TIANG DALAM TANAH PASIR Andikanoza Pradiptiya; Yuwono Yuwono
Jurnal Poli-Teknologi Vol. 18 No. 1 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i1.1301

Abstract

ABSTRACTCertain buildings limit displacement of pile foundation with relatively small value so as not to cause damage to the structure. Loading test directly in the field requires a very high cost. To overcome this problem, it can be approached with a more economical cost, that is to move it into a certain scale models. The method used is to create a media model as a test box testing, by simulating the actual model in the form of a scale model. This method is fairly cheap and efficient as it can be used for various models and can be used repeatedly. The study was conducted using models of reduced scale single pile foundation made of concrete with a length of 0.2 m, 0.3 m, 0.4 m and each diameter of 0.02 m, 0.03 m, 0.04 m. Pile model is jacked in clay soil that has been compacted in a box and then given a tensile load test referring to ASTM D3689-07 procedure E (Constant Rate of Uplift Test). Mobilization of uplift resistance is determined from the pile frictional resistance force and displacement of the pile. The results showed that the frictional resistance value is reduced to the value at a particular displacement or at critical displacement pile.Key words : uplift resistance , sand, mini pile.ABSTRAKBeberapa konstruksi bangunan memberikan batasan kepada perpindahan tiang yang terjadi dengan nilai yang relatif kecil supaya tidak menyebabkan kerusakan struktur. Metode uji yang dipakai adalah membuat box uji model sebagai media pengujian, dengan mensimulasikan model yang sebenarnya ke dalam bentuk model skala. Penelitian dilakukan menggunakan model fondasi tiang tunggal skala tereduksi yang terbuat dari beton dengan panjang 0,2 m, 0,3 m, 0,4 m dan masing-masing diameter 0,02 m, 0,03 m, 0,04 m. Model tiang dipasang dengan cara ditekan pada tanah pasir yang sudah dipadatkan dalam box uji kemudian diberikan beban tarik yang mengacu pada ASTM D3689-07 prosedur E (Constant Rate of Uplift Test). Tahanan tarik tiang ditentukan tahanan gesek satuan dan perpindahan tiang berdasarkan variasi pengaruh diameter dan panjang tiang. Hasil penelitian menunjukkan bahwa nilai tahanan gesek satuan ultimit (fs) dan perpindahan kritis (δc) relatif menurun dengan bertambahnya ukuran diameter (d) tiang tetapi sebaliknya nilai fs tiang meningkat dengan dengan bertambahnya ukuran panjang (L) tiang. Semakin besar panjang tiang memperlihatkan kecenderungan bahwa pengaruh tekanan tanah lateral pasir terhadap selimut tiang meningkat sehingga memberikan kontribusi tahanan gesek yang lebih besar, sedangkan penambahan diameter tiang tidak meningkatkan tekanan tanah lateral pasir terhadap tiang.Katakunci : Tahanan tarik, pasir, Model Fondasi tiang.
Co-Authors A’isyah Salimah Fadilla, Rahma Nur Handi Sudardja Hendriyansyah, Rafly Istiatun Istiatun Muhammad Fathur Rouf Hasan Putera Agung Maha Agung Salimah, A’isyah Yuwono Yuwono Yuwono Yuwono Yuwono Yuwono