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Tinjauan Kekuatan Sistem Penyangga Terowongan dengan Menggunakan Metode Elemen Hingga Apriyono, Arwan; Sumiyanto, Sumiyanto
Dinamika Rekayasa Vol 6, No 1 (2010): Dinamika Rekayasa - Februari 2010
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2010.6.1.32

In the developing countries like Indonesia, especially in the big cities like Jakarta, tunnel constructions should be considered to solve traffic problems. Besides, geological and topographical condition in Indonesia that is rich of mine materials making tunnel construction will be developed in the future. But then, to the present time, there are too many cases of failure of tunnel construction inÂ several countries. This failure caused by supporting system of tunnel doesnât capable to support the construction. Based on this Â phenomenon, it was necessary to research about review of supporting system strength of tunnel construction.Stability analysis of mine tunnel that belongs to P.T. Aneka Tambang Tbk, located in Pongkor Mountain, Bogor, West Java, would be done in this research. This analysis was conducted with numerical method using plaxis 3D tunnel software. Slice of tunnelÂ along 15 meters of length will be analyzed in this research. This slice would be divided into three step of excavation. Mohr Coloumb material model were used in soil material. Whereas linear elastic model were used in other materials likes shotcrete, rock bolt and steel sets. Three variation conditions of tunnels would be considered in this research namely tunnel without supporting system, tunnel with original supporting system (same as in the research location), and tunnel with Q system supporting system. In this research, examination would be done for the change of displacement of the tunnel construction in consequence of the three conditions above.The results of this research show that the installation of supporting system reduced displacement of the tunnel significantly.Â Average decreasing of displacement value as a result of the original supporting system is 12.5 cm (46.30 %). Whereas, average decreasingÂ of displacement as a result of the Q system supporting system is 9.25 cm (34.26%). Although not as strength as original supporting system,Â the Q system supporting system deserves to be considered in supporting system analysis.

Pengaruh Variasi Diameter Kolom Kapur untuk Stabilisasi Lempung Lunak pada Tinjauan Nilai Indeks Pemampatan Tanah (Cc) Apriyono, Arwan; Sumiyanto, Sumiyanto
Dinamika Rekayasa Vol 5, No 2 (2009): Dinamika Rekayasa - Agustus 2009
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2009.5.2.23

Mostly soil in java, especially in northern area is included in soft clay soil classification. The behavior of this soil, have large value of coefficient compression (Cc), so consolidation settlement potentially occur in this soil. In this research, this problem will beÂ handled by limes column. Â Limes columns were expected could reduce Cc value so consolidation settlement could be reduced too. This research wasÂ conducted through experimental in laboratory, with box that have 40 cm in diameters and this heights is 40 cm. Five various of diameters Â applied in this research and this affect to value of Cc would be examined. Those are 3 cm, 5 cm, 8 cm, 10 cm and 12 cm diameters.The result of this research show that limes column could reduce of Cc in significant value. The average change of Cc with limesÂ column is 0,095 (37,63 %) if compare with Cc without limes column stabilization. The results also show that increasing of limes columnÂ diameters have no affects to the value of coefficient compression.

Analisis Penyebab Tanah Longsor di Kalitlaga Banjarnegara Apriyono, Arwan
Dinamika Rekayasa Vol 5, No 1 (2009): Dinamika Rekayasa - Februari 2009
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2009.5.1.18

Indonesia is one country that has many areas vulnerable to landslides. To the present time, there are many victims of disastersÂ caused by landslides in Indonesia. To handle the landslide disaster, requires some knowledge about the causes, mechanisms andÂ appropriate mitigation efforts against disasters mentioned above. Causes and mechanisms of landslides is necessary in determining the Â mitigation in order to the victim can be minimized.This paper is an analytical study of the causes of landslides at Kalitlaga Village, Pagentan Sub district, Banjarnegara Regency. Causes of Â landslides determined by analyzing the results of field investigation and supporting data (topographic and geological maps at the researchÂ location). The analysis results, also be used to determine the proper method of handling landslides in the area. Based on the results investigation field, it can be concluded that the main cause of landslides at Kalitlaga is topographic factors. Kalitlaga Village is located in the mountain range with a fairly steep slope ranges from 20o - 45o. The other cause of landslides is a poor drainage system in the village. Besides, based on geological maps, geological structure in the area included breksi rock in tapak formation, which has a sandstone soil type, breksi andesite composition and the organic soil. The characteristics of this soil type have a low cohesion valueÂ with a high permeability, so that condition also supports the occurrence of landslides. Kalitlaga landslide in the village can be minimizedÂ by manage the drainage system. Besides, efforts such as cutting of the slopes also need to be done at some location.

ANALISIS PENANGGULANGAN KELONGSORAN TANAH PADA RUAS JALAN GUNUNG TUGEL PATIKRAJA BANYUMAS Apriyono, Arwan; Sumiyanto, Sumiyanto; Wariyatno, Nanang Gunawan
Jurnal Teknik Sipil Vol 14, No 1 (2016)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Gunung Tugel is an area that located Patikraja Region, Southern Banyumas. Thetopography of the area is mostly mountainous with a slope that varies from flat to steep. Thiscondition makes to many areas of this region potentially landslide. In 2015, a landslideoccurred in Jalan Gunung Tugel. The Landslide occurred along 70 meters on the half of theroad and causing traffic Patikraja-Purwokerto disturbed. To repair the damage of the road andavoid further landslides, necessary to analyze slope stability. This study is to analyze landslidereinforcement that occurred at Gunung Tugel and divides into 3 step. The first step is fieldinvestigation to determine the condition of the location and dimensions of landslides. Thesecond step is to know the soil parameters and analyzes data were obtained from the field. Andthe final step is analyzed of the landslide reinforcement by using data obtained from thepreceding step. In this research, will be applied three variations of reinforcement i.e. retainingwall, pile foundation and combine both of pile foundations and retaining wall. Slope stabilityanalysis was conducted using limit equilibrium method. Based on the analysis conducted onthe three variations reinforcement, combine both of pile foundations and retaining wall morerecommended. Application of and combine both of pile foundations and retaining wall is themost realistic option in consideration of ease of implementation at the field. From thecalculations have been done, in order to achieve stable conditions need retaining wall withdimensions of 2 meters high with 2,5 meters of width. DPT is supported by two piles of eachcross-section with 0.3 meters of diameter along 10 meters with 1-meter in space.Â Abstrak: Gunung Tugel adalah salah satu daerah yang terletak di Kecamatan PatikrajaKabupaten Banyumas bagian selatan. Kondisi topografi daerah tersebut sebagian besar berupapegunungan dengan kemiringan yang bervariasi dari landai sampai curam. Hal inimenyebabkan banyak daerah di wilayah Gunung Tugel yang berpotensi terjadi bencana tanahlongsor. Pada tahun 2015, peristiwa longsor kembali terjadi di ruas Jalan Gunung Tugel.Kelongsoran yang terjadi sepanjang 70 meter pada separuh badan jalan tersebut menyebabkanarus lalu lintas patikraja-purwokerto menjadi terganggu. Untuk memperbaiki kerusakan jalandan mencegah kelongsoran kembali, diperlukan analisis perkuatan tanah terhadap lerengtersebut. Studi analisis penanggulangan kelongsoran jalan yang terjadi di Gunung Tugel inidilakukan dengan tiga tahapan. Tahapan pertama adalah investigasi lapangan untukmengetahui kondisi lokasi dan dimensi longsor serta mengambil sampel tanah di lapangan.Tahap kedua adalah melakukan pengujian parameter tanah dan analisis data yang diperolehdari lapangan. Tahapan yang terakhir adalah analisis penanggulangan longsor denganmenggunakan data yang diperoleh dari tahapan sebelumnya. Pada penelitan ini, akanditerapkan tiga variasi perkuatan lereng yaitu dinding penahan tanah (DPT), turap dan DPTyang dikombinasikan dengan pondasi tiang. Analisis stabilitas lereng dilakukan dengan metodekeseimbangan batas. Berdasarkan hasil analisis yang dilakukan terhadap ketiga variasiperkuatan, DPT dengan kombinasi tiang pancang lebih direkomendasikan. Penerapan DPTyang dikombinasikan dengan minipile merupakan pilihan yang paling realistis denganpertimbangan tingkat kemudahan pelaksanaan di lapangan. Dari perhitungan yang telahdilakukan, untuk mencapai kondisi stabil diperlukan DPT dengan dimensi tinggi 2 meterdengan lebar bawah 2,5 meter. DPT tersebut ditopang oleh dua tiang tiap penampangmelintang dengan diameter 0,3 meter sepanjang 10 meter dengan jarak antar tiang 1 meter.kata kunci: tanah longsor, perkuatan tanah, metode keseimbangan batas

ANALISIS PENANGGULANGAN KELONGSORAN TANAH PADA RUAS JALAN GUNUNG TUGEL PATIKRAJA BANYUMAS Arwan Apriyono; Sumiyanto Sumiyanto; Nanang Gunawan Wariyatno
Jurnal Teknik Sipil Vol. 14 No. 1 (2016)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Gunung Tugel is an area that located Patikraja Region, Southern Banyumas. Thetopography of the area is mostly mountainous with a slope that varies from flat to steep. Thiscondition makes to many areas of this region potentially landslide. In 2015, a landslideoccurred in Jalan Gunung Tugel. The Landslide occurred along 70 meters on the half of theroad and causing traffic Patikraja-Purwokerto disturbed. To repair the damage of the road andavoid further landslides, necessary to analyze slope stability. This study is to analyze landslidereinforcement that occurred at Gunung Tugel and divides into 3 step. The first step is fieldinvestigation to determine the condition of the location and dimensions of landslides. Thesecond step is to know the soil parameters and analyzes data were obtained from the field. Andthe final step is analyzed of the landslide reinforcement by using data obtained from thepreceding step. In this research, will be applied three variations of reinforcement i.e. retainingwall, pile foundation and combine both of pile foundations and retaining wall. Slope stabilityanalysis was conducted using limit equilibrium method. Based on the analysis conducted onthe three variations reinforcement, combine both of pile foundations and retaining wall morerecommended. Application of and combine both of pile foundations and retaining wall is themost realistic option in consideration of ease of implementation at the field. From thecalculations have been done, in order to achieve stable conditions need retaining wall withdimensions of 2 meters high with 2,5 meters of width. DPT is supported by two piles of eachcross-section with 0.3 meters of diameter along 10 meters with 1-meter in space. Abstrak: Gunung Tugel adalah salah satu daerah yang terletak di Kecamatan PatikrajaKabupaten Banyumas bagian selatan. Kondisi topografi daerah tersebut sebagian besar berupapegunungan dengan kemiringan yang bervariasi dari landai sampai curam. Hal inimenyebabkan banyak daerah di wilayah Gunung Tugel yang berpotensi terjadi bencana tanahlongsor. Pada tahun 2015, peristiwa longsor kembali terjadi di ruas Jalan Gunung Tugel.Kelongsoran yang terjadi sepanjang 70 meter pada separuh badan jalan tersebut menyebabkanarus lalu lintas patikraja-purwokerto menjadi terganggu. Untuk memperbaiki kerusakan jalandan mencegah kelongsoran kembali, diperlukan analisis perkuatan tanah terhadap lerengtersebut. Studi analisis penanggulangan kelongsoran jalan yang terjadi di Gunung Tugel inidilakukan dengan tiga tahapan. Tahapan pertama adalah investigasi lapangan untukmengetahui kondisi lokasi dan dimensi longsor serta mengambil sampel tanah di lapangan.Tahap kedua adalah melakukan pengujian parameter tanah dan analisis data yang diperolehdari lapangan. Tahapan yang terakhir adalah analisis penanggulangan longsor denganmenggunakan data yang diperoleh dari tahapan sebelumnya. Pada penelitan ini, akanditerapkan tiga variasi perkuatan lereng yaitu dinding penahan tanah (DPT), turap dan DPTyang dikombinasikan dengan pondasi tiang. Analisis stabilitas lereng dilakukan dengan metodekeseimbangan batas. Berdasarkan hasil analisis yang dilakukan terhadap ketiga variasiperkuatan, DPT dengan kombinasi tiang pancang lebih direkomendasikan. Penerapan DPTyang dikombinasikan dengan minipile merupakan pilihan yang paling realistis denganpertimbangan tingkat kemudahan pelaksanaan di lapangan. Dari perhitungan yang telahdilakukan, untuk mencapai kondisi stabil diperlukan DPT dengan dimensi tinggi 2 meterdengan lebar bawah 2,5 meter. DPT tersebut ditopang oleh dua tiang tiap penampangmelintang dengan diameter 0,3 meter sepanjang 10 meter dengan jarak antar tiang 1 meter.kata kunci: tanah longsor, perkuatan tanah, metode keseimbangan batas

Efektivitas Injeksi Larutan Kapur untuk Menurunkan Plastisitas Tanah Lempung sebagai Upaya Mengatasi Kerusakan Jalan Raya Sumiyanto Sumiyanto; Arwan Apriyono
Dinamika Rekayasa Vol 8, No 1 (2012): Dinamika Rekayasa - Februari 2012
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2012.8.1.51

Highway built on high plasticity clay will be easily damaged by groundshrinkage flower essence. Stabilization of clayby mixing lime is a repairement method that has been proven quite effective. However, this method is difficult to be applied in existing road because demolition must be done. Stabilization of clay using lime solution injection is the method proposed toovercome the problems of expansive clay under the existing highway, therefore demolition is not required. This study was conducted to obtain effective parameters influencing the distance lime solution injection sites and time required for complete stabilization process. This research was conductedin labotarorium by injection experiments. Test results shows indications of soil plasticity decrease, especially the value of plasticity index (PI) and liquid limit (LL). PI decreases from 24.74% to 19.5% and LL decrease from 52.32% to 45%. Based on data analysis it appears that the time required for complete lime solution injection (effective time) has not been obtained in this test. Based on test data, until the day 28 value of soil plasticity index is still low. In this study obtained effective distance influencing the injectionsolution of lime is 100 cm. The distance is still need to be enlarged by increasing the high pressure.

Pengaruh Variasi JarakKolom Kapur dalam Stabilisasi Tanah Lempung Lunak pada Tinjauan Nilai Indek Pemampatan Tanah(Cc) Arwan Apriyono; Sumiyanto Sumiyanto
Dinamika Rekayasa Vol 7, No 2 (2011): Dinamika Rekayasa - Agustus 2011
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2011.7.2.46

Numerousbuildingslocated in north area of Java Island encountersettlement problem. The settlementoccurs because most ofsoil in the areais soft clay soil. The behavior of this soilis characterized by the large value of coefficient compression (Cc) and small valueof bearing capacity. This condition causes potentially great consolidation settlement. In this research, limes column stabilization method will be applied to make soft clay soil better. Limes columns were expected to reduce Cc value therefore consolidation settlement decreases. This research was conducted throughlaboratory experiment, usingbox100 cm in lengths, 40 cm in wide, and 40 cmin height. Three variations of diameters (5 cm, 10 cm, 15 cm) and three variations of distance of sample taken from outside of the limes column mould (10 cm,20 cm, 30 cm) was applied in this research. Influence of limes column to the value of Ccwasexamined. The result of this research showsthat limescolumn couldsignificantlyreduceCcvalue. TheCc valuedecreases when thedistance of sample taking placedecreases. The average of Ccdeclineon three variationsdistance of column (10 cm, 20 cm, 30 cm)are 17.28%, 44.97%, 52.24%respectively. The most efficient distance of thelimes column is 20 cm.

Studi Pengaruh Stabilisasi Tanah Lempung Lunak Menggunakan Kolom Kapur Terhadap Parameter Kecepatan Penurunan Tanah Arwan Apriyono; Sumiyanto Sumiyanto; Adhe Noor Patria SH
Dinamika Rekayasa Vol 4, No 1 (2008): Dinamika Rekayasa - Februari 2008
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2008.4.1.127

Soft clay is kind of problem in building and highway foundation design. This type of soils, have low coefficient consolidation (Cv) parameter. This condition will cause that soils have very long duration in consolidation process. Limes column stabilization method can be applicable to solve this problem.This research be conducted to analyzed coefficient consolidation behavior in limes column stabilization method. The change variety of coefficient consolidation w ill be observe due to variation of limes column diameter. The limes column stabilization method be wished to increase the value of coefficient consolidation so settlement process of the soil get more rapidly. This research was conducted through experimentalin laboratory, with box that have 40 cm in diameters and this height is 40 cm. Five various of diameters applied in this research and this affect to value of Cv would be examined. Those are 3 cm, 5 cm, 8 cm, 10 cm and 12 cm diameters The result of this research show that limes column could increasing the value of coefficient consolidation. The average change of Cv is 0,000051 (6,38 %) compare w i th Cv without limes column stabilization. However, increasing of limes column diameters have no significant affects to the value of coefficient consolidation.

Studi Kapasitas Lateral Pondasi Tiang Ujung Bebas Dengan Variasi Diameter Dan Jarak Beban Sampai Muka Tanah Pada Tanah Pasir Di Laboratorium Arwan Apriyono
Dinamika Rekayasa Vol 2, No 1 (2006): Dinamika Rekayasa - Februari 2006
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2006.2.1.10

The aim of this research is to study behavior of single free-end pile under lateral loads due to various of diameters and distance load from ground surface in cohesion less soil. The research was conducted through experimental in laboratory. Three various of diameters are: 1cm, 1.25cm and 1.5cm are used, and five various of distance load from ground surface are: 15cm, 17.5cm, 20cm, 22.5cm and 25cm. The value of ultimate lateral capacity (Pu) is determined by using interpretation method and compared to Brom's analysis method. The result of this this research is that value of the lateral capacity will increase with increasing of diameters, but it will decrease while distance load from ground surface increase.

Pengaruh Pemasangan Anyaman Karet Ban Bekas Pada Tanah Pasir dengan Pembebanan Berulang Sumiyanto Sumiyanto; Arwan Apriyono; Tri Ayuk Mistiyani; Reza Nanda Pradana
Dinamika Rekayasa Vol 18, No 1 (2022): Jurnal Ilmiah Dinamika Rekayasa - Februari 2022
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2022.18.1.409

Perkuatan tanah pasir dengan anyaman karet ban bekas merupakan upaya mengatasi permasalahan kapasitas dukung jalan raya, dengan mamanfaatkan limbah ban bekas. Anyaman ban bekas berfungsi sebagai tulangan tanah pengganti geogrid. Anyaman dibuat dengan ukuran 3 cm x 2 mm dengan spasi 10 cm, yang dipasang 10 cm di bawah permukaan tanah. Efektifitas anyaman karet ban bekas dikaji pada pembebanan statis dan pembebanan berulang. Pembebanan berulang dilakukan untuk menirukan perilaku beban kendaraan yang sifatnya berulang. Penelitian dilakukan di laboratorium dengan melakukan pengujian pembebanan di dalam kotak uji. Tanah yang digunakan berupa tanah pasir denngan pemadatan rendah, yaitu 5% dari energi pemadatan proctor standard. Pembebanan berulang dilakukan sebanyak 12 kali, yang masing-masing untuk beban 45 kg, 90 kg, 135 kg, dan 180 kg. Setelah beban berulang dilakukan, pembebanan dilanjutkan untuk mendapatkan kuat dukungnya. Hasil penelitian menunjukan bahwa pemasangan anyaman karet ban bekas mampu meningkatkan kapasitas dukung tanah, baik pada pembebanan statis, maupun pasca pembebanan berulang. Pada penelitian ini tidak terjadi efek fatique akibat beban berulang

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