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All Journal Jurnal Ilmiah MITSU (Media Informasi Teknik Sipil Universitas Wiraraja) Rekayasa Sipil UNEJ e-Proceeding Jurnal Rekayasa Sipil dan Lingkungan U Karst Jurnal Jalan Jembatan FROPIL (Forum Profesional Teknik Sipil) BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Aplikasi Teknik Sipil Portal: Jurnal Teknik Sipil Lowland Technology International Jurnal Difusi Jurnal Jalan Jembatan Jurnal Teknik Sipil Berkala Forum Studi Transportasi antar Perguruan Tinggi
Indra Nurtjahjaningtyas
University Of Jember
Humanities Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Engineering Environmental Science Social Sciences Transportation

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ANALISIS STABILITAS SOIL NAILING SEBAGAI ALTERNATIF PENANGANAN LONGSOR DI JALUR NASIONAL PIKET NOL LUMAJANG JAWA TIMUR Ibrahim, Muhammad Fahmi; Putra, Paksitya Purnama; Nurtjahjaningtyas, Indra
Jurnal Jalan-Jembatan Vol 38 No 1 (2021)
Publisher : Direktorat Bina Teknik Jalan dan Jembatan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The Piket Nol national route is an alternative route across the southern island of Java that connects the Lumajang Regency with the Malang Regency. Landslide-prone areas are starting from KM Turen 53 to KM Turen 59 on this route. The Simplified Bishop method is used in analyzing slope stability and modeling soil nailing reinforcement with numerical modeling. Slope and soil nailing stability control are applied following SNI 8460 2017. The average value of the safety factor for the natural slope's stability at the top of the road is 0.269 or less than 1.07 (unstable). Whereas the stability of the lower slope of the road in most locations shows a stable condition (SF>1.25), except for KM 57+100, KM 58+100, and KM 58+900 with an average SF value of 1,183 (critical). The average value of the safety factor for the top slope stability after reinforcement using soil nailing is 1,728, whereas for the lower slope stability is 1,853. Soil nailing is designed as slope improvement at KM 57+900, other than that in anticipation of the potential for landslides at KM 56+900-KM 57+700 and KM 58+100-KM 59+100. The results of all stability control of slope reinforcement using soil nailing have met the SNI 8460 2017 criteria. Therefore, soil nailing can be an alternative solution in dealing or anticipating with landslides on The Piket Nol national route. Key words: landslide, slope stability, safety factor, soil nailing, soil nailing stability.
Analisis Perkuatan Soil Nailing pada Lereng Bawah Jembatan Gantung Alas Bayur Kecamatan Mlandingan Kabupaten Situbondo Hadi Hamid Abdullah; Paksitya Purnama Putra; Indra Nurtjahjaningtyas
Portal: Jurnal Teknik Sipil Vol 13, No 1 (2021): Edisi April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/portal.v13i1.2117

Abstract

Studi ini bertujuan untuk menganalisis stabilitas lereng kondisi eksisting dan setelah mengalami perkuatan soil nailing. Analisis stabilitas lereng kondisi eksisting dilakukan dengan perhitungan rumus metode fellenius dan program Slope/W. Perkuatan soil nailing dianalisis terhadap stabilitas eksternal yakni terhadap keruntuhan global, gaya geser dan daya dukung tanah, serta terhadap stabilitas internal terhadap putus dan cabut tulangan. Analisis dilakukan dengan dan tanpa adanya pengaruh gempa, serta dalam kondisi tanah jenuh. Dari hasil analisis stabilitas eksisting lereng didapatkan bahwa lereng dalam kondisi labil/longsor sering terjadi karena memiliki nilai faktor keamanan 1,07. Dari hasil analisis perkuatan soil nailing didapatkan desain yang memenuhi kriteria aman yakni soil nailing dengan 13 nail bar berdiameter 32 mm, fy 520 MPa, panjang 6 meter, diameter lubang bor  20 cm dan sudut pemasangan sebesar 10° dengan nilai faktor keamanannya yakni; (1) stabilitas eksternal; (a) terhadap keruntuhan global, FSG(Slope/W) = 1,513 , FSG(Slope/W) = 1,305 (kondisi gempa), FSG(rumus) = 1,515 , FSG(rumus) = 1,389 (kondisi gempa); (b) terhadap gaya geser, FSSL = 2,163; (c) terhadap daya dukung tanah, FSH = 15,344, dan (2) stabilitas internal, (a) terhadap cabut tulangan; FSP = 2,404, (b) terhadap putus tulangan, FSST = 3,125.
ANALISIS PERKUATAN LERENG AKIBAT LONGSOR DI DESA DOMPYONG Endah Nurhidayah; Paksitya Purnama Putra; Indra Nurtjahjaningtyas
Rekayasa Sipil Vol. 16 No. 1 (2022): Rekayasa Sipil Vol.16. No.1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2022.016.01.2

Abstract

An unstable slope is identical to the low value of their factor of safety (FS). Slope with low FS are in critical condition, which can cause landslides. On the other hand, the presence of triggering factor such as rain and human activities will increase the percentage of landslide. It has happened in Dompyong village. The Rocscience Slide Program, used to analyze slope stability in Dompyong village based on the simplified – bishop method. Based on the analysis, the FS value of the initial condition of slope is 0,85. Therefore, the slope is in critical condition because the FS value is less than 1,07. A combination method of retaining wall and micropiles is used to strengthen slope stability. This method can increase the FS value to 1,370. The slope is in a stable condition relatively because the FS value is more than 1,25.
Perbandingan Kebutuhan Material Diaphragm Wall dan Secant Pile pada Proyek Grand Dharmahusada Lagoon Surabaya Fajar Hardianto; Luthfi Amri Wicaksono; Indra Nurtjahjaningtyas
Jurnal Rekayasa Sipil dan Lingkungan Vol 5 No 1 (2021): Jurnal Rekayasa Sipil dan Lingkungan
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jrsl.v5i1.12418

Abstract

The construction of the Grand Dharmahusada Lagoon Apartment on Dharmahusada Mas, Mulyorejo, had a detrimental effect on the homes of local residents. Damage that occurs in general is cracks on the walls of the house ranging. Reinforcement using Diaphragm Wall and Secant Pile are designed for the Grand Dharmahusada Lagoon Surabaya project. Diaphragm wall and secant pile is a type of retaining wall that has the same advantages, the construction not noisy in workmanship, thickness and depth that can be adjusted as needed. The purpose of this thesis is to know and compare effectiveness of each plan. The results obtained in the calculation are material dimensions, wall depth, and maximum deformation. The Diaphragm wall has a thickness of 2.7 meters and a depth of 31 meters with a maximum deformation of 4.98 cm. In secant pile, the diameter of the pile is 1.2 meters with a depth of 31 meters and a maximum deformation of 4.93 cm. Based on the results of the planning comparison 2 of this method which includes maximum deformation, depth of excavation, wall thickness and estimated cost, planning was chosen using secant pile as a retaining wall. ABSTRAK Pembangunan Apartemen Grand Dharmahusada Lagoon di Jalan Dharmahusada Mas, Mulyorejo, membawa dampak buruk bagi rumah warga sekitar. Kerusakan yang terjadi pada umumnya adalah retak pada tembok rumah. Perencanaan perkuatan pada proyek Grand Dharmahusada Lagoon Surabaya menggunakan Diaphragm wall dan secant pile. Diaphragm wall dan secant pile merupakan jenis dinding penahan tanah memiliki keunggulan yang sama yaitu tidak bising dalam pengerjaan, ketebalan dan kedalaman yang dapat diatur sesuai kebutuhan. Tujuan perbandingan perencanaan dalam skripsi ini untuk mengetahui dan membandingkan keefektifan dari masing – masing perencanaan.. Hasil yang didapatkan pada perhitungan adalah dimensi material, kedalaman dinding, dan deformasi maksimum. Pada Diaphragm wall didapatkan ketebalan 2,7 meter dan kedalaman 31 meter dengan deformasi maksimum 4,98 cm. Pada secant pile didapatkan diameter pile sebesar 1,2 meter dengan kedalaman 31 meter dan deformasi maksimum 4,93 cm. Berdasarkan hasil perbandingan perencanaan 2 metode ini yang meliputi deformasi maksimum, kedalaman galian, ketebalan dinding dan estimasi biaya, dipilih perencanaan dengan menggunakan secant pile sebagai dinding penahan tanah.
EFFECT OF EARTHQUAKE LOAD ON THE STRUCTURE OF THE HIGHWAY BRIDGE WITH I-GIRDER PRESTRESSED CONCRETE IN THE EVENT OF INACCURACIES IN PRESTRESSING LOSS PREDICTIONS Pujo Priyono; Indra Nurtjahjaningtyas
Jurnal Rekayasa Sipil dan Lingkungan Vol 2 No 02 (2018): JURNAL REKAYASA SIPIL DAN LINGKUNGAN
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (257.569 KB) | DOI: 10.19184/jrsl.v2i02.8016

Abstract

In planning a highway bridge girder using prestressed concrete, it must pay attention to two design categories, namely strength and service. Problems have arisen since the existence of earthquake resistance regulations for road bridges, so planners must calculate the amount of deflection and stress that occurs in the upper structure due to earthquake loads, which must be smaller than the deflection and voltage permits required by regulations. All of that was also greatly influenced by the accuracy of the predicted loss losses for prestressed concrete girders. The purpose of this study was to conduct a study which could be a solution for how to actually treat a good design, for the I-Girder design of prestressed concrete used as a highway bridge girder in the event of inaccurate prediction of loss of pressure during an earthquake, resulting in two design categories strength and service ability can be considered all well. The methodology of this study is to make as a starting point the prestressed concrete I girder whose dimensions are capable of being a highway bridge girder with a span of 30 m to 40 meters with standard loading for loading BM 100. For span bridges that have 100% prediction accuracy, use as a basic benchmark of deflection and stress values that occur for the type of combination of loads that have earthquake loads, then with the same span, varied values of inaccurate predictions lose pre-stress and analyzed deflection and stress values that occur for types of load combinations that have earthquake loads varied earthquake regions 1,2, 3 and 4, for medium soil types. The results of the study show that the greater the percentage of inaccurate prediction of loss of pressure, the greater the deviation ratio of deviations both deflection, upper fiber stress and lower fiber stress occur in the field. Which, if the prediction of losing pre-pressures is smaller than the actual one, then the level of the deviation ratio of the allowable deviation increases as well as vice versa. Also, predicting pre-suppression voltage loss that is located on the side greater than the actual loss of pressure that occurs will be on the part of the party that is harmful to the ability of service and the permissible power, when an earthquake occurs.
Analisis Pondasi Tiang Pancang Dengan Variasi Diameter Dan Kedalaman Menggunakan Program 3D Berbasis FEM Rizal Mutowaf Al Fatah; Indra Nurtjahjaningtyas; Paksitya Purnama Putra
Jurnal Aplikasi Teknik Sipil Vol 19, No 1 (2021)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1614.314 KB) | DOI: 10.12962/j2579-891X.v19i1.8449

Abstract

Pondasi tiang pancang pada suatu konstruksi sangat perlu dilakukan analisa dengan menggunakan beberapa metode. Salah satu metode yang dapat digunakan adalah program analisis Finite Element Method (FEM) 3D. Pada metode ini dapat mengatasi keterbatasan metode P–Y yang ada untuk area yang luas dan mendekati kombinasi perilaku yang sesungguhnya. Pada penelitian ini dilakukan simulasi program 3D pada diameter dan kedalaman tiang yang diinterpretasikan pada hasil uji PDA dengan CAPWAP. Dari hasil perhitungan daya dukung ijin menggunakan 6 pemodelan pada program 3D FEM yang telah diinterpretasikan, didapatkan analisis dan perhitungan yang terbaik yaitu pondasi tiang dengan diameter 0,6 meter dan kedalaman ± 54 meter yang menghasilkan nilai keamanan 2,721, Qijin 220,67 ton, dan penurunan total 0,2907 meter. Penulangan pilecap D25-100 mm dan raft D32-100 mm.
Risk Factor Classification Effect on Sematok Dam Slopes Stability Indra Nurtjahjaningtyas; Paksitya Purnama Putra; Sholeh Huda Taufiqurohman
Lowland Technology International Vol 23 No 1 (2021): Lowland Technology International Journal
Publisher : International Association of Lowland Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.0001/ialt_lti.v23i1.852

Abstract

The Semantok Dam was built with extreme classified risk factors. These conditions require a more detailed review of its stability with the imposition of Operationing Basic Earthquake (OBE) at the 200-year return period, as well as the imposition of Maximum Design Earthquake (MDE) at the 10000-year return period. This study aimed to determine the response of the dam due to the earthquake load in addition to the influence of pore pressure values under rapid drawdown conditions. Results of analysis using load Maximum Design Earthquake (MDE) of 0.6 g show a significant effect on the slope stability of the dam. In these conditions, there is a failure in maintaining the dam slope stability. Further examination for permanent deformation due to the influence of the earthquake load still meets the required criteria.
Desain Ulang Dinding Penahan Tanah Menggunakan Dinding Diafragma dan Angkur pada Tanah Lunak (Studi Kasus: Grand Dharmahusada Lagoon) Tiara Maharani; Indra Nurtjahjaningtyas; Luthfi Amri Wicaksono
Jurnal Rekayasa Sipil dan Lingkungan Vol 5 No 2 (2021): Jurnal Rekayasa Sipil dan Lingkungan
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jrsl.v5i2.19035

Abstract

In some cases, basement wall work still often occurs as a construction failure with a variety of causes. One of them is a basement construction project for an apartment and mall in Grand Dharmahusada Lagoon. The first plan of the basement wall didn’t strong enough to resist a lateral movement of the soil. The previous studies have been carried out by redesigning the retaining wall using a diaphragm wall and ground anchor as a support system. The results are obtained that the use of diaphragm walls can decrease the value of displacement that occurs on the wall. However, previous studies have only conducted a review of the diaphragm wall thickness. This study adds several numbers of anchors as research variables to find effective and efficient combinations. This study compares the effect of diaphragm wall dimensions with a different number of anchors on the deformation value and safety factor. Based on the results of the study, a wall thickness of 1.75 m with a depth of 33 m using 3 anchors a deformation occurred are 3.63 m while using 4 anchors a deformation occurred are 2.37 m. The difference in deformation is 1.26 m. Because the value of deformation was still large, it carried out a re-design for the anchor position, and diaphragm wall dimension with the same number of anchors, and the deformation results were reduced to 15.81 cm with a safety factor of 1.3. ABSTRAK Pada beberapa kasus, pekerjaan dinding basement masih sering mengalami kegagalan konstruksi dengan berbagai macam penyebab. Salah satu diantaranya pada proyek pekerjaan dinding basement apartemen dan mall Grand Dharmahusada Lagoon. Dinding basement yang direncanakan diawal ternyata tidak cukup kuat untuk menahan pergerakan lateral tanah. Telah dilakukan pada penelitian sebelumnya dengan merencanakan ulang dinding penahan tanah menggunakan dinding diafragma dan sistem penunjang angkur tanah. Kemudian didapatkan hasil yaitu penggunaan dinding diafragma mampu memperkecil displacement yang terjadi pada dinding. Namun penelitian sebelumnya hanya melakukan tinjauan pada ketebalan dinding diafragma. Penelitian ini menambahkan jumlah angkur sebagai variabel penelitian untuk mencari kombinasi yang efektif dan efisien. Penelitian ini membandingkan pengaruh penggunaan dimensi dinding diafragma dengan jumlah angkur yang berbeda terhadap nilai deformasi dan faktor keamanan. Berdasarkan hasil analisa menggunakan PLAXIS V8.6, pada ketebalan dinding 1,75 m dengan kedalaman 33 m menggunakan 3 angkur terjadi deformasi sebesar 3,63 m sedangkan dengan penggunaan 4 angkur terjadi deformasi 2,37 m. Selisih deformasi yang terjadi sebesar 1,26 m. Direncanakan ulang untuk penempatan angkur, dimensi dinding pada jumlah angkur yang sama maka didapatkan hasil deformasi berkurang hingga 15,81 cm dengan faktor keamanan 1,3.
PELAKSANAAN PENGUJIAN ROKET AIR PADA PESANTREN KREATIF YATIM MANDIRI KABUPATEN JEMBER Intan Hardiatama; Indra Nurtjahjaningtyas; Muhammad Trifiananto
Jurnal Difusi Vol 3 No 2 (2020): Jurnal Difusi
Publisher : Pusat Penelitian dan Pengabdian Masyarakat (P3M) Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (491.69 KB) | DOI: 10.35313/difusi.v3i2.1900

Abstract

Perguruan Tinggi hendaknya melaksanakan fungsi Tiga Dharma Perguruan Tinggi, yaitu fungsi belajar/mengajar, penelitian dan pengabdian masyarakat secara terpadu. Pelaksanaan pengabdian masyarakat oleh dosen-dosen dari suatu perguruan tinggi memiliki peran strategis, karena adanya transfer iptek yang diperlukan masyarakat, dengan prioritas yang berlatar belakang ekonomi dan pendidikan rendah.. Yatim Mandiri merupakan sebuah Lembaga Amil Zakat Nasional (LAZNAS) milik masyarakat Indonesia yang memiliki misi mengangkat harkat sosial kemanusiaan yatim dhuafa dengan dana ZISWAF (Zakat, Infaq, Shadaqah, Wakaf) serta pendanaan lainnya yang halal dan legal dari perusahaan / lembaga perorangan, kelompok, (http://yatimmandiri.org/page/kilas-sejarah.html). Yayasan Yatim Mandiri Kabupaten Jember pada bulan Ramadhan 1439 H mengadakan “Pesantren Ramadhan Kreatif”dengan peserta anak–anak yatim dari berbagai wilayah di Kabupaten Jember. UNEJ bekerjasama dengan Yatim mandiri untuk terselenggaranya pelatihan roket air dngan konsep fun learning ini. Pada acara ini juga sekaligus dilaksanakan pengabdian berupa pengenalan konsep roket air dan penerapannya. Tujuan dari pengabdian ini antara lain dapat meningkatkan kemandirian anak yatim, meningkatkan pengetahuan tentang sains beserta aplikasinya, meningkatkan antusiasme siswa untuk belajar sains, dan meningkatkan motivasi ibadah di bulan suci ramadhan dengan kegiatan positif. Metode quisioner digunakan untuk mengavaluasi hasil kegiatan ini. Kegiatan yang dilakukan berupa praktek pembuatan, pengujian , pemberian materi, dan Tanya jawab roket air . Dari hasil quisioner pelatihan ini menarik bagi seluruh peserta. Serta antusiasme peserta untuk belajar roket dan ilmu sains lebih lanjut sangat tinggi. Hasil dari kegiatan ini, para peserta kegiatan lebih memahami prinsip kerja roket air dan launchernya. Kata kunci: Pengabdian, roket air, yatim mandiri
Evaluasi Kegagalan Dinding Penahan Tanah Pada Lereng Jalan Raya Rembangan Kabupaten Jember Ayu Dwi Lestari; Paksitya Purnama Putra; Indra Nurtjahjaningtyas
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 10 No 2 (2022): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2022)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v10i2.4414

Abstract

A reinforced concrete type retaining wall was built in 2017 to strengthen the slope stability of Rembangan highway, Jember Regency, Indonesia. However, in 2018 the building was damage. Until now, the cause of the failure of the retaining wall is still unknown. This study aims to evaluate the causes of the failure of retaining walls and the stability of retaining walls on the slopes of the Rembangan highway, Jember Regency. The research methodology begins with primary and secondary data collection before processing the data using conventional methods and auxiliary software. After data processing, data analysis was carried out to find conclusions about the cause of the failure of the retaining wall. Result analysis showed that the retaining walls have a low level of safety factor for rolling stability, shear stability, and bearing capacity stability. In addition, the factor of safety for the bearing capacity of the group pile foundation as a reinforcement of retaining walls also shows a smaller value than that charged. In addition, the group pile foundation can suffer a total settlement of 1.28 m.
Co-Authors Adelia Daud Lalita Anita Trisiana Ayu Dwi Lestari Devi Naning Endah Nurhidayah Entin Hidayah Fajar Hardianto Gatrawan Muchammad Albirru Hadi Hamid Abdullah Holis Nurshinta Ibrahim, Muhammad Fahmi Intan Hardiatama Luthfi Amri Wicaksono Muhammad Fahmi Ibrahim Muhammad Trifiananto Paksitya Purnama Putra Pujo Priyono Raffio Rasta Darmawan Restu Farina Rohmawati Retno Utami Agung Wiyono Risqi Sofiana Rizal Mutowaf Al Fatah Sholeh Huda Taufiqurohman Tatang Maulana Maliq Tiara Maharani