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All Journal Jurnal Ilmiah Poli Rekayasa Jurnal Rekayasa Sipil Jurnal Ilmiah Rekayasa Sipil Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat
Sari, Desnila
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Languange, Linguistic, Communication & Media Transportation

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PENGARUH INTERAKSI TANAH-STRUKTUR PADA TANAH LUNAK TERHADAP DILATASI DARI DUA BANGUNAN TINGGI AKIBAT GEMPA Sari, Desnila; Murdiansyah, Lukman; Yurisman, Yurisman; Guspari, Oni
Jurnal Ilmiah Poli Rekayasa Vol 18, No 2 (2023): April
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.18.2.244

Abstract

Earthquakes that occur in buildings can lead to collision force with the next building if the initial gap between the two buildings is not sufficient for its free vibration responses. Collisions can cause amplification of the internal forces in the structural elements and the collision force on the contact zone is usually not considered in the initial design so that it can lead to damage and collapse of buildings. This study aime to determine the effect of Soil-Structure Interaction in the dilatation of two structures in soft soil with consideration of the collision to the next building. The structure is modeled as a structural system with multi degree of freedom (MDOF). The upper structure is considered linear elastic model and does not have damping as well as the lower structure (foundation). The collision can only occur on the floor level of the two buildings in which the contact zone is modeled as an elastic element. The rheological model for Soil-Structure Interaction are taken as a horizontal spring and a rotational spring. Structural dynamic equations was solved by using the Houbolt integration method. The resolution of numerical program was solved by the Matlab software. The results of study showed that soil-strucutre interaction increases the relative displacement under the condition of initial distance (gap) between the two buildings was reduced.
Desain Furniture Teknik Rustic Sari, Desnila; Natalia, Monika; Mirani, Zulfira; Partawijaya, Yan; Atmaja, Jajang
Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat Vol 6 No 2 (2024)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jppm.v6i2.1264

Abstract

The use of waste can be a surefire alternative to making furniture at less cost. It can be commercial ideas, and profitable business, processing wasted materials into unique furniture, without losing naturalness. The concept of rustic is utilizes natural resources. Rustic style can be interpreted as a style in architectural and interior design the impression of natural and beautiful. In processing finishing it is done imperfectly it must remain in a rough texture. Finishing is done only to protect weather materials and termites. The application of independent community science and technology about rustic technique furniture design has been carried out at Panti Sasuhan Khusus Anak Mentawai, Purus 4 Padang, on Sunday, August 27, 2023. This activity was carried out by socializing about waste materials to how to make rustic technique furniture, by discussion and question and answer. The success of this activity can be seen from the enthusiasm of participants in discussions and questions and answers as well as their interest in trying to make their own later. This activity, it is expected to increase the insight, knowledge and skills of orphanage children to be able to become independent entrepreneurs by utilizing unused natural materials into beautiful furniture that is selling.
Kajian Numerik Perilaku Seismik Link Geser Pada Sistem Struktur Baja Tahan Gempa Tipe EBF Yurisman, Yurisman; Army, Buyung; Sari, Desnila; Chairi, Maiyozzi
Jurnal Rekayasa Sipil Vol. 17 No. 3 (2021)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.17.3.204-217.2021

Abstract

Artikel ini memaparkan hasil studi numerik terhadap perilaku link geser (shear link) pada sistem struktur baja tahan gempa tipe Eccentrically Braced Frame (EBF). Rangka baja berpengaku eksentrik (EBF) mempunyai kekakuan elastik yang sangat baik dibawah pembebanan lateral sedang dan mempunyai daktilitas yang tinggi saat dibebani beban gempa yang besar. Dibawah kondisi pembebanan ekstrim perilaku inelastik direncanakan untuk ditahan oleh Link. Kinerja dari system struktur EBF sangat tergantung dari perilaku elemen link yang berfungsi sebagai sekring pada sistem struktur tersebut. Dalam kajian ini telah diteliti terhadap beberapa parameter yang berpengaruh secara signifikan terhadap perilaku seismik elemen Link. Kajian ini bertujuan untuk mendapatkan Link dengan kinerja seismic (kekuatan, kekakuan, daktilitas dan dissipasi energi) yang lebih tinggi dibandingkan dengan link standar AISC sehingga diharapkan  pada akhirnya akan mendapatkan sstem EBF dengan kinerja yang lebih baik. Kinerja Link diukur dalam nilai kekuatan (strength), kekakuan (stiffness), daktilitas (ductility) serta kemampuan Link dalam melakukan dissipasi energi. Kajian dilakukan secara numerik dengan menggunakan program applikasi Patran_Nastran   dimana Link dimodelkan sebagai balok yang terpisah dari system EBF (sub assembly) yang dikekang pada kedua ujungnya sementara pada salah satu ujung tersebut diberikan beban perpindahan secara siklik dan monotonik dengan kontrol perpindahan (displacement control). Beberapa parameter yang diteliti mencakup parameter penampang, modifikasi terhadap pengaku dibagian badan. Parameter penampang yang diteliti adalah yang terkait dengan kelansingan penampang (h/tw, bf/tf) sedangkan modifikasi terhadap pengaku badan dilakukan dalam bentuk pemasangan pengaku dalam arah diagonal. Hasil penelitian menunjukkan bahwa parameter kelansingan badan (h/tw) , kelansingan sayap (bf/2tf), dan penempatan pengaku secara diagonal mempunyai pengaruh yang signifikan terhadap kinerja Link, sedangkan jarak plat pengaku lateral tidak mempunyai pengaruh yang berarti. Hasil analisis terhadap perilaku seismik Link geser dinyatakan dalam bentuk kurva beban vs perpindahan. Dari hasil kajian ini dapat disimpulkan bahwa untuk mendapatkan Link dengan kinerja yang lebih baik dapat dilakukan dengan cara modifikasi terhadap penampang dan melakukan rekayasa terhadap geometrik pengaku badan (pengaku vertikal dan diagonal).
Evaluasi Kapasitas Eksisting Sungai Batang Mangor di Hulu Bendung Ladang Laweh Dengan Peningkatan Debit Banjir Rencana 25 Tahun Hartati, Hartati; Dalrino, Dalrino; Sari, Desnila; Mafriyal, Mafriyal; Hanwar, Suhendrik; Sadtim, Sadtim; Desvani, Maulia; Putri, Nadhia Hanifah
Jurnal Ilmiah Rekayasa Sipil Vol 21 No 2 (2024): Oktober 2024
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v21i2.1611

Abstract

Ladang Laweh Irrigation District Dam is located in Sicincin nagari, Padang Pariaman Regency with an irrigation service area of 1,140 Ha. The Ladang Laweh Irrigation Area weir receives flow from the Batang Mangor river which is included in the Batang Mangor watershed. On September 22, 2021 a flood occurred on September 22, 2021 resulting in an overflow with a height of 2.5 m above the lighthouse with an estimated discharge of 141.946 m3 /dt resulting in runoff flow in the area upstream of the bending. Analysis of the capacity of the existing river upstream of the weir was carried out with a 25-year plan flood discharge. Modeling is done by analyzing 15 years of rain data and catchment area starting from the location point of the weir upstream. The validation results under full bank capacity conditions obtained the closest match to the theoretical flood discharge value of the Nakayasu method. The simulation results show that the existing cross section of segments P1 to P19 at the Korong Gadang location is inundated during flood events with river capacity in several locations exceeding the maximum capacity. The results also provide recommendations for flood management by suggesting the addition of river embankments at locations that experience inundation.
PERBANDINGAN BIAYA PEMBANGUNAN RUMAH SEDERHANA DENGAN RUMAH KONSEP AMAN GEMPA BERDASARKAN ANALISA BENEFIT COST RATIO SKENARIO GEMPA 50 TAHUN Natalia, Monika; Mirani, Zulfira; Mafriyal, Mafriyal; Sari, Desnila; Hanum, Riska Fauziah
Jurnal Ilmiah Poli Rekayasa Vol 19, No 2 (2024): April
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.19.2.361

Abstract

In mitigation to minimize the risk of earthquakes, protection is needed to reduce the impacts. Damage caused by earthquakes can be minimized by planning and building earthquake-resistant houses. To get an earthquake-resistant house, by adding earthquake-strengthening components based “Pedoman Teknis Rumah dan Bangunan Gedung Tahan Gempa and SNI 1726-2019”. This research aims to design earthquake-resistant houses concept for an earthquake period of 50 years and analyze the benefit-cost ratio by comparing residential houses designed with earthquake-safe features to conventional residential houses. The concept of earthquake-resistant houses is carried out in conventional type 120 residential houses. The research results that the cost for a conventional residence is IDR 387,223,000 and the cost of an earthquake house concept is IDR. 407,593,000, where there is a cost difference of IDR 20,370,000 or 5% (more expensive). Benefit-cost ratio value for conventional residential houses for the 50-year earthquake scenario is 0.64; 0.71; 0.77; 0.82; and 0.87 where the value of BCR <1, then this residential house is not effective in facing a 50-year earthquake scenario. Benefit-cost ratio for earthquake-safe housing was 1.12; 1.34; 1.58; 1.84; and 2.09. The BCR>1 and the value moves up until the 50th year. So with an additional cost of 5% for earthquake-safe features, this house is considered very effective for the 50-year earthquake period scenario.
Co-Authors Buyung Army Chairi, Maiyozzi Dalrino Dalrino Desvani, Maulia Hanum, Riska Fauziah Hartati Hartati Jajang Atmaja Lukman Murdiansyah, Lukman Mafriyal Mafriyal Natalia, Monika Oni Guspari Putri, Nadhia Hanifah Sadtim Sadtim Suhendrik Hanwar Yan Partawijaya Yurisman Yurisman Zulfira Mirani