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Jurnal Teknik Sipil
Published by Universitas Atma Jaya Yogyakarta
ISSN : 1411660X     EISSN : 25492918     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture Transportation
Jurnal Teknik Sipil adalah wadah informasi bidang Teknik Sipil berupa hasil penelitian, studi kepustakaan maupun tulisan ilmiah terkait. Terbit pertama kali Oktober tahun 2000. Frekuensi terbit dua kali setahun pada bulan April dan Oktober. (ISSN 1411-660X).
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 406 Documents
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PREDIKSI BIDANG GELINCIR GERAKAN TANAH MENGGUNAKAN METODE ELECTRICAL RESISTIVITY TOMOGRAPHY (ERT) Achmad Sri Fadli; Teuku Faisal Fathani; Fikri Faris
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.5989

Abstract

Terjadi longsor di area tebing batu (Rocky Wall) jalan akses fasilitas produksi pipa penyalur uap dan brine Pembangkit Listrik Tenaga Panas bumi (PLTP) milik PT. Pertamina Gothermal Energy (PT.PGE) di Kabupaten Muara Enim, Provinsi Sumatera Selatan, yang menyebabkan terjadinya penurunan produksi (derating) di PLTP akibat rusaknya fasilitas produksi dari sumur produksi klaster 1 ke PLTP. Tujuan dari penelitian ini untuk mengidentifikasi struktur lapisan bawah permukaan longsoran di area rocky wall dan untuk memprediksi kedalaman bidang gelincir (slip surface) berdasarkan nilai resistivitas lapisan tanah dengan metode geofisika ERT, sehingga metode geoteknik yang dipilih untuk penanganan longsor adalah tepat. Penelitian ini dilakukan dengan metode geofisika Electrical Resistivity Tomography (ERT) konfigurasi Wenner, Schlumberger dan Dipole-dipole dengan Ares II (Automatic Resistivity System II) sebagai peralatan utama ERT yang digunakan dalam pengambilan data. Luas daerah penelitian adalah 150 m × 200 m dengan jumlah pengukuran sebanyak 4 lintasan. Dari hasil pengolahan data pengukuran resistivitas menggunakan perangkat lunak Res2dinv dan Zondres2D, hasilnya menunjukkan bahwa sebaran batuan di daerah longsor rocky wall didominasi oleh lapisan breksi andesit lapuk dan lanau berpasir berlempung. Berdasarkan back analysis dan analisis stabilitas lereng sebelum kondisi longsor terjadi dan setelah longsor terjadi menggunakan Slope/W, didapatkan lapisan yang berpotensi menjadi bidang gelincir berkesesuaian pada kedalaman 10,43 m di bawah permukaan lereng.
ANALISIS TINGKAT KEPUASAN MASYARAKAT SURAKARTA TERHADAP FLY OVER PURWOSARI SURAKARTA Yohannes Lulie; Hosea Endru Setiawan
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

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

Abstract

Abstract: Transportation is growing very rapidly along with the times, the development of transportation can cause traffic jams, especially land transportation. Surakarta is one of the cities experiencing severe congestion in the flow of traffic, due to the large number of railroad crossings that make traffic jammed, one of which is in Purwosari, Surakarta. Due to frequent traffic jams at that location, the Fly Over Purwosari Surakarta was built, the fly over itself is one of the structures that avoids traffic jams. During development, there are many pros and cons, therefore research on the satisfaction and comfort of fly over users is one thing that must be considered, so that the level of satisfaction can be a benchmark whether the fly over has succeeded in its function. This research was conducted by distributing a questionnaire form to 100 riders who crossed the Fly Over Purwosari Surakarta. Validity tests, reliability tests, and Importance Performance Analysis (IPA) tests were carried out with the help of the SPSS (Statistical Product and Service Solutions) version 25 program and Microsoft Excel 2016. In analyzing the satisfaction level, there are several aspects such as safety, road conditions, guarantees for road users, accessibility, and mobility. The results of this study are able to show that the driver is quite satisfied the completeness and clarity of road markings, the accessibility of the lane, as well as the completeness and clarity of traffic signs. Then for performance that needs to be improved again is street lighting.
Perkuatan Ikatan Plastik dan Matriks Semen Menggunakan Metode Soybean Crude Urease - Calcite Precipitation (SCU-CP) Heriansyah Putra; Rizki Amelia
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.6083

Abstract

Plastic is widely used because it is light, strong, and stable. However, plastic will produce waste that is difficult to decompose. One effective way to manage plastic waste is to recycle it into plastic pellets. Besides being used as a raw material for making recycled plastic, plastic pellets can be used as a substitute for fine aggregate. The compressive strength test of plastic concrete decreases compressive strength. It is due to plastic’s slippery surface, which weakens the bond between plastic and cement matrix. Calcite deposition using Soybean Crude Urease Calcite Precipitation (SCU-CP) method is expected to provide a solution. This study discussed the effect of High-Density Polyethylene (HDPE) plastic pellets on concrete strength as the fine aggregate substitution. In addition, the impact of calcite on concrete with HDPE plastic substitution was also evaluated in this study. The results show that plastic substitution decreases the strength of concrete. On the other hand, adding calcite can improve compressive strength compared to plastic concrete without SCU-CP. The optimum compressive strength was obtained with a variation of 1% plastic and 5% SCU-CP, which increased 7.5% and 2.8% higher compared to the normal concrete and plastic concrete without calcite, respectively. This study elucidated that the adding SCU-CP method to plastic concrete has a great potential to optimize the concrete strength.
POTENSI PENGGUNAAN INTENSITAS HUJAN HASIL PENGAMATAN SATELIT UNTUK AMBANG HUJAN PEMICU TANAH LONGSOR Karina Aliya Nabila; Agus Setyo Muntohar; Ani Hairani; Nuriah Agrina
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.6125

Abstract

Kejadian longsor yang dipicu oleh hujan sangat berkaitan erat dengan intensitas dan durasi hujan. Informasi waktu terjadinya longsor memerlukan rekaman curah hujan yang akurat melalui pengukuran di lokasi longsor. Namun, seringkali rekaman curah hujan tidak diperoleh di area longsor. Naskah ini menyajikan hasil kajian curah hujan hasil pengukuran di stasiun hujan permukaan (ground station) dan pengukuran satelit. Penelitian bertujuan mengkaji hubungan data curah hujan hasil pengukuran dengan rain gauge (RG) dengan data hujan satelit Tropical Rainfall Masuring Mission (TRMM) dan Global Precipitation Measurement (GPM). Lokasi kajian berada di Kalibawang yang berada pada koordinat 7o40’33”LS/110o15’49”BT. Hasil kajian menyimpulkan bahwa hubungan antara rain gauge dengan data satelit termasuk dalam kategori sedang dengan nilai korelasi dari 0,50 hingga 0,55. Data satelit memiliki performa yang lebih baik dalam pengukuran curah hujan dibandingkan pengukuran curah hujan langsung di lapangan karena intensitas TRMM > intensitas GPM > intensitas rain gauge.
PERILAKU LENTUR BALOK LAMINASI KAYU GLUGU DAN SENGON DENGAN SAMBUNGAN EPOKSI DAN PAKU Henda Febrian Egatama; Haryanto Yoso Wigroho; Ade Lisantono
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.6335

Abstract

Kayu laminasi atau kayu glulam struktural (glued laminated timber) telah menjadi inovasi yang cukup berkembang dalam meningkatkan mutu kayu untuk digunakan sebagai elemen struktural suatu bangunan. Berbagai penelitian telah dilakukan sebagai upaya optimasi metode, antara lain dengan memvariasikan jenis kayu, dimensi, dan jumlah lamina. Penelitian untuk memeriksa pengaruh sambungan mekanis sebagai sambungan tambahan pada kayu laminasi dibutuhkan untuk memperluas inovasi metode, tetapi jumlah penelitian tersebut masih minim. Oleh karena itu, penelitian ini bertujuan untuk mempelajari pengaruh jarak antar paku sebagai sambungan mekanis tambahan pada perilaku lentur balok laminasi, yang sudah direkatkan dengan lem epoksi. Dalam penelitian ini, balok laminasi kayu glugu-sengon-glugu berdimensi 5 x 7 cm diuji lentur satu titik dengan variasi jarak antar paku sebesar 5, 10, 15, dan 20 cm. Berdasarkan hasil penelitian, penambahan sambungan paku dapat meningkatkan kekuatan lentur maksimum (MOR) sebesar 29% (47,67 MPa), 46% (54,01 MPa), 17% (43,12 MPa), dan 4% (38,49 MPa) pada variasi jarak antar paku 20 cm, 15 cm, 10 cm, dan 5 cm, dibandingkan dengan balok tanpa sambungan paku atau BK (36,91 MPa). Peningkatan nilai modulus elastisitas (MOE) terjadi pada variasi jarak antar paku 20 cm, 15 cm, dan 10 cm sebesar 19% (7213,22 MPa), 29% (7808,98 MPa), dan 16% (7016,08 MPa), sedangkan pada variasi jarak antar paku 5 cm terjadi penurunan sebesar 5% (5758,97 MPa), jika dibandingkan dengan BK (6042,20 MPa). Dari hasil tersebut, jarak optimal antar paku sebagai sambungan mekanis pada kayu laminasi adalah 15 cm. Lapisan kayu dengan kuat kelas yang lebih tinggi yang diletakkan pada bagian luar dapat memberikan penambahan kekuatan lapisan kayu dengan kuat kelas lebih rendah yang diletakkan di tengah.
EVALUASI MORFOLOGI DASAR SUNGAI WINONGO DENGAN HEC-RAS 5.0.7 Irfan Maulana Ibrahim; Puji Harsanto; Bayu Krisna Wisnulingga
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.6390

Abstract

Sungai Winongo merupakan salah satu sungai yang berhulu di Gunung Merapi. Gunung Merapi merupakan salah satu gunung paling aktif di Indonesia sehingga sering kali memuntahkan material batuan dan pasir yang mengalir melalui aliran sungai. Dengan banyaknya material yang terbawa oleh aliran sungai, akan menyebabkan agradasi dan degradasi yang dapat mengubah morfologi dasar sungai. Jika terjadi secara terus menerus, hal tersebut dapat mengakibatkan kerusakan pada pengaman tebing sungai yang dapat berpotensi membahayakan wilayah sekitar. Untuk mencegah hal tersebut, dilakukan penelitian analisis angkutan sedimen dasar dengan menggunakan perangkat lunak komputer HEC-RAS 5.0.7. Dari hasil analisis yang didapat, aliran sungai yang mengalami agradasi tertinggi Q2 yaitu pada bagian hilir di cross section 1 sebesar 1,36 m, sedangkan Q50 yaitu pada bagian hulu di cross section 760 sebesar 2,093 m. Degradasi terbesar Q2 terjadi pada bagian hulu di cross section 748 sebesar 0,998 m, sedangkan Q50 yaitu pada bagian hulu di cross section 748 sebesar 0,996 m.
Cover Vol. 17, No. 1, Oct 2022 Jurnal Teknik Sipil
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.6448

Abstract

Cover
Front Matter Vol. 17, No. 1, Oct 2022 Jurnal Teknik Sipil
Jurnal Teknik Sipil Vol. 17 No. 1 (2022)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i1.6449

Abstract

Front matter
PENGARUH RENCANA PENINGKATAN VOLUME TAMPUNGAN TERHADAP STABILITAS TUBUH BENDUNGAN KEDUNG OMBO Gerald Guntur Pandapotan Siregar
Jurnal Teknik Sipil Vol. 17 No. 2 (2023)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i2.5881

Abstract

The strategy to meet the water demands of Semarang and Demak Regencies involves enhancing the storage capacity of the Kedung Ombo Dam. This augmentation will inevitably alter the typical water level, thereby affecting the stability of the dam structure as it bears a greater load. Furthermore, the Kedung Ombo Dam, which is nearly 32 years old, necessitates re-evaluation since it lacks the full benefit of contemporary design methods. This study is confined to examining the slope stability, both static and pseudostatic, at a steady state flow, with the highest normal water level elevation (elevation +92.00) as the focal point. The slope stability analysis was conducted via the finite element method using the Slope/W in Geo-Studio software. The outcome of the static slope stability analysis indicates that the safety factor of the Kedung Ombo Dam body remains above the minimum allowable safety factor. In the pseudostatic analysis, the safety factor during the Operating Basic Earthquake (OBE) remains above the minimum allowable safety factor. However, during the Maximum Design Earthquake (MDE), the safety factor demonstrates a value that is lower than the minimum allowable safety factor. Nevertheless, the analysis of fixed displacement or permanent deformation reveals that the maximum settlement that occurs during the MDE earthquake does not exceed 50% of the available freeboard.
NUMERICAL MODELING OF APPLIED NEAR-SURFACE MOUNTED ON REINFORCEMENT SLAB WITH ABAQUS CAE Irkhas Bayu Faveryan; Andreas Triwiyono; Suprapto Siswosukarto
Jurnal Teknik Sipil Vol. 17 No. 2 (2023)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v17i2.6183

Abstract

Reinforced concrete (RC) is the most applied material in modern construction. Research on strengthening RC concrete members has also been widely carried out. Over time, concrete elements might deteriorate due to several factors, such as load, creep, or any other environmental aspects, leading to stiffness or strength reduction. Following the rapid development of studies on RC, the development of strengthening of concrete structure Reinforced Polymer (FRP) is also the case to overcome concrete deterioration. To improve the strength capacity of the concrete beams, Ega (2020) investigated the effect of epoxy adhesive length on the bonding strength of rebar using several laboratory tests. The result of the study yielded that the optimum length for the epoxy was 150 mm with a strength increase of up to 165.3%. The laboratory tests were modeled numerically using Abaqus CAE to simulate the behavior of the RC beam. Investigating the ideal mesh size and crack model behavior was the first stage of modeling. An RC beam previously experimentally tested by Ega (2020) was used for validation. Therefore, this research compares the numerical results from the Abaqus simulation with experimental data results. The specimen tested for this research was a concrete beam of 1200 mm x 450 mm x 120 mm subjected to 3-point loading. This study aims to develop a suitable numerical model for one of the tested beams and facilitate the design of NSM that follows the character of the previous research.

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