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All Journal Jurnal Ilmiah Rekayasa Sipil Construction and Material Journal Mitra Akademia: Jurnal Pengabdian Masyarakat Jurnal Warta Desa (JWD)
yelvi yelvi
Politeknik Negeri Jakarta
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PEDULI DAN PENCEGAHAN COVID-19 DI RT. 009, RW. 016, KELURAHAN BAKTI JAYA, KECAMATAN SUKMA JAYA, DEPOK yelvi yelvi
Mitra Akademia: Jurnal Pengabdian Masyarakat Vol. 3 No. 2 (2020): Mitra Akademia
Publisher : Unit Penelitian dan Pengabdian kepada Masyarakat (UP2M) Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/mapnj.v3i2.3478

Abstract

COVID-19 in Indonesia was first discovered in Depok, West Java. Two Depok Residents were declared positive COVID-19 on March 2, 2020. Since the announcement of the first case. Depok is now a city in West Java Province with the most COVID-19 positive cases. To suppress the spread of COVID-19, the Depok city government imposed large-scale social restrictions (PSBB) on April 15, 2020. The public’s impact is strongly felt due to the enactment of PSBB in terms of the economy. Many people have to lose their jobs. Public awareness in maintaining cleanliness and health is also still lacking due to the public’s inability to buy masks and hand soap whose prices soar. The Jakarta State Polytechnic Civil Engineering Department’s Road and Bridge Design Engineering Program (TPJJ) is motivated to participate in assisting communities affected by COVID-19 by holding community service activities. Sukmajaya sub-district is the area in Depok that is most infected with COVID-19. Based on this, TPJJ Study Program will assist in providing public sinks, the distribution of masks, hand soap, and food at RT 009 RW 016 Bakti Jaya subdistrict Sukmajaya Sub-District, Depok. It is hoped that this activity can reduce the spread of COVID-19 and can ease the burden on people who are experiencing economic hardship. 
Analisis Stabilitas Lereng Dengan Perkuatan Geotekstil (Studi Kasus: Proyek Pembangunan Jalan Tol Cibitung - Cilincing Seksi 2 STA 6+475) Pandu Graha Rizqullah; Yelvi Yelvi
Jurnal Ilmiah Rekayasa Sipil Vol 19 No 2 (2022): Oktober 2022
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v19i2.836

Abstract

Excavation and embankment work on toll roads is a routine work due to the difference of elevation between road and ground existing. This paper This paper will discuss slope stability during earth works at Cibitung - Cilincing Toll Road Project since there are a lot of excavation and embankment works. The slope stability has to be analyzed to determine safety factor (SF). On this paper, embankment slope at STA 6+475 is reinforced by geotextile system. The safety factor is calculated using before and after reinforced by geotextile using Bishop method and PLAXIS software program. The results shows that a safety factor of 1.47 (manually) and 1.201 (PLAXIS) in static condition. For dynamic condition with coefficient of horizontal earthquake of 0,18 is obtained average of safety factor of 0.95 (manually). While the safety factor for analysis with earthquake loads using PLAXIS software program cannot be calculated, then the lateral deformation value is sought, which is 0,505 m. From this result, the slope of existing condition has to be reinforced by geotextile system since SF is less than 1.25. Reinforcement of geotextile system designed is divided into 2 zones, such as: 1.0 m and 0.5 m. Analysis of slope stability of the embankment slopes with geotextile reinforcement system is obtained a safety factor of 1.880. It means that the condition of the existing embankment slopes reachs 64%. While the value of the lateral deformationnof the embankment slope using geotextile renforcement with an earthquake load is 0,034 m, so that this value meets the allowable deformation value.
PENERAPAN GEOTEKSTIL SEBAGAI INOVASI SUMUR RESAPAN UNTUK PENANGGULANGAN BANJIR DAN KETERSEDIAAN AIR TANAH Yelvi Yelvi; Aisyah Salimah; Rikki Sofyan Rizal; Istiatun Istiatun; Arliandy Pratama Arbad
Jurnal Warta Desa (JWD) Vol. 4 No. 3 (2022): Jurnal Warta Desa (JWD)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jwd.v4i3.200

Abstract

Pemukiman di Kelurahan Beji Timur semakin padat sehingga lahan terbuka hijau semakin sedikit. Akibatnya resapan air ke dalam tanah semakin berkurang. Sehingga pada musim hujan terjadi limpasan air permukaan dan dapat mengakibatkan banjir. Sedangkan pada musim kemarau ketersediaan air tanah menjadi berkurang. Perlu adanya upaya inovatif untuk merekayasa model resapan air yang berkelanjutan, salah satunya melalui sumur resapan. Sumur resapan merupakan salah satu alternatif untuk perlindungan air tanah dan meminimalkan limpasan permukaan, karena sumur resapan mudah diaplikasikan di pemukiman penduduk dan dapat menyeimbangkan penggunaan air tanah. Pada kegiatan ini sumur resapan dibuat ditempat wudhu laki-laki dan perempuan dalam rangka meresapkan air wudhu ke dalam tanah agar dapat menjadi cadangan air tanah. Sumur resapan inovatif ini dibuat dengan memasang geotekstil diseluruh dinding dan dasar sumur resapan sehingga luas penyerapan air lebih banyak dibanding dengan sumur resapan konvensional. Agar posisi geotekstil menjadi kokoh, sekitar 50 cm dari dasar sumur dimasukkan batu kali dan di bagian atas dinding sumur dibuat lebih lebar dan dipasang pasangan bata untuk menahan geotekstil. Warga masyarakat terlibat pada saat persiapan, pelaksanaan maupun pasca pelaksanaan untuk mengetahui bagaimana program ini dapat berjalan dan sesuai dengan yang diharapkan. Luaran yang dihasilkan dalam kegiatan ini adalah Buku dan Paten Sederhana.
PERBANDINGAN DAYA DUKUNG FONDASI TIANG BOR MENGGUNAKAN METODE REESE & WRIGHT DAN MEYERHOF Yelvi Yelvi; Muchsin Farid Habibie; Putera Agung Maha Agung
Construction and Material Journal Vol. 4 No. 3 (2022): Construction and Material Journal Vol. 4 No. 3 November 2022
Publisher : Politeknik Negeri Jakarta

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

Abstract

The Serang-Panimbang Toll Road Construction Project is one of the National Strategic Projects (PSN) with a total length of 83,677 km. The main bridge 18, which is one of the projects on the toll road section, has a drill pile foundation for its substructure. The drill pile foundation is a pile foundation that is installed by drilling the ground first, then filling it with reinforcement that has been assembled and cast in concrete. The foundation has a slope that is less than the permitted slope to support the load above it and is built to withstand both vertical and horizontal stresses. This study compared the Reese & Wright method with the Meyerhof method, two bearing capacity estimation techniques. The comparison aims to determine whether the outcomes of the two approaches utilized significantly differ from one another. The findings of the SPT test were used to conduct the analysis of bearing capacity. In this work, drill piles with a 1 m diameter and 15 m depth were used. According to the analysis's findings, the permit's bearing capacity using the Reese & Wright approach was 246.20 tons, however the permit's bearing capacity using the Meyerhof method was found to be 541.87 tons. For the Reese & Wright approach, the single drill pile decreased by 9,07 mm, and the group pile decreased by 25,7 mm; for the Meyerhof method, the single drill pile decreased by 9,17 mm, and the group pile decreased by 25,34 mm. Furthermore, it was found from both methods of calculating the bearing capacity that both stable static loads and dynamic loads work so that the foundation can be categorized (P max < Q single permit). The ratio of the bearing capacity of the single mast permit on the Reese & Wright method compared to the Meyerhof method is 0.478:1. Keywords: Bearing Capacity, Drilled Pile, Stability.
Penerapan Soil Preloading, PVD, dan PHD untuk Analisis Penurunan Konsolidasi Tanah Citra Kusuma Andini; Yelvi Yelvi; Azmi Lisani Wahyu; Handi Sudardja; Merley Misriani
Jurnal Ilmiah Rekayasa Sipil Vol 20 No 2 (2023): Oktober 2023
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v20i2.1158

Abstract

Soft clay has a low bearing capacity, high compressibility and low permeability. This condition causes soft clay soil to have a long settlement time. To overcome this soft soil condition, soil improvement methods are needed. One of the efforts is to use a combination of soil preloading methods, Prefabricated Vertical Drain (PVD), and Prefabricated Horizontal Drain (PHD) methods. Calculating soil settlement with soil improvement is carried out using the Asaoka method, which is a field observation method, and the theoretical method using the Terzaghi method. Based on the calculation results of field observations using the Asaoka method, the average degree of soil settlement is 93.5%. The calculation results of the Asaoka method are recalculated using a back calculation to produce a new parameter value, namely the horizontal consolidation (Ch) value, which is then compared with the Ch value in the previous plan. In the Terzaghi method, the average soil settlement value is 1.205 meters. The results of soil settlement value are used to analyze the height of the embankment based on the load ratio requirement in SNI 8460: 2017, where the load ratio on the ground is ≥ 1.3 times the planned load under service conditions. Based on the monitoring results, a load ratio value of 0.875 was obtained so that the SNI requirements carried out a re-planning of the landfill. Then, proceed with the design of PVD and PHD. The results obtained in planning use triangular PVD patterns with a distance between PVDs of 1 meter.
Co-Authors Aisyah Salimah Arliandy Pratama Arbad Azmi Lisani Wahyu Citra Kusuma Andini Handi Sudardja Istiatun Istiatun Muchsin Farid Habibie Pandu Graha Rizqullah Putera Agung Maha Agung Rizal, Rikki Sofyan