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All Journal Jurnal Transportasi BANGUN REKAPRIMA Teras Jurnal Jurnal Pengembangan Rekayasa dan Teknologi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) International Journal of Sustainable Building, Infrastructure and Environment
Galih Widyarini
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH., Tembalang Semarang 50275
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Mechanical Engineering Social Sciences Transportation Other

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Analysis of Level of Service at Jati Raya Street Semarang during New Normal Covid-19 Pandemic Suharyo, Seno; Widyarini, Galih; Pratiwi, Yesina Intan
International Journal of Sustainable Building, Infrastructure and Environment (IJOSBIE) Vol 2, No 1 (2021)
Publisher : Science and Technology Research Centre, Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/ijosbie.v2i1.9134

Abstract

Jati Raya Street is one of the streets in Banyumanik district, Semarang, where many vehicles pass. Before the Covid-19 pandemic, the traffic jam usually occurs at certain hours because of people activities passing through this street. The purpose of this research is to know the degree of saturation and the street level of service from the volume / capacity ratio during New Normal condition on Covid-19 pandemic. The primary data survey is by measuring the street width and counting the two-way traffic volume. The survey was held on Monday, 9 November 2020, at 06.15 – 08.15, 11.05 – 13.05, and 16.05 – 17.05. From the survey results, the maximum traffic flow is 784 pcu/hour, the time is at 07.15 – 08.15, and the traffic direction is from Pasar Jati toward Sukun Raya street. The street capacity is 2371 pcu/hour, with a 0,33 degree of saturation. The street level of service based on this survey is B, which means, steady traffic flow, the driver has enough option to control the vehicle speed. This research was done during New Normal condition on Covid-19 pandemic, where there is a decrease on the number of vehicles that passing through this street, for some reasons, which one of them is because the school activities is using an online methods, so that students can study from home, without the needs of parents taking them to school and picking them up from school.Keywords: capacity, degree of saturation, level of service
Pengaruh Pelapukan Lapisan Batuan Terhadap Stabilitas Lereng Situmorang, Adolf; Kusrin, Kusrin; Christa, Ngudi Hari; Pratiwi, Yesina Intan; Widyarini, Galih; Widiatmoko, Kukuh Wisnuaji
Teras Jurnal : Jurnal Teknik Sipil Vol. 12 No. 2 (2022): Volume 12 Nomor 2, September 2022
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v12i2.707

Abstract

Abstrak Longsor merupakan suatu proses perpindahan massa batuan atau tanah akibat pengaruh gravitasi sebagai respon terhadap aktivitas alam yang menyebabkan kerusakan morfologi permukaan lereng, dan longsor yang terjadi di Wonogiri kemungkinan karena pelapukan lapisan batuan akibat curah hujan yang sering terjadi di aera tersebut. Penelitian ini dilakukan dengan tahapan pengambilan sampel batuan, pengukuran dan pengumpulan data sekunder. Klasifikasi batuan menggunakan parameter RQD, RMR dan Q-system untuk mengetahui karakteristik batuan. Hasil dari klasifikasi tersebut menunjukkan bahwa lapisan batuan di lokasi longsor masuk dalam kategori sedang hingga sangat rentan mengalami pelapukan. Dengan mempertimbangkan siklus curah hujan dan jumlah hujan dalam hari yang dihitung dalam satu tahun diketahui ada pengurangan kekuatan batuan berdasarkan penelitian terdahulu. Hasil analisa metode element hingga menunjukkan terjadi pengurangan kekuatan batuan berdasarkan parameter geser yang berakibat pada stablititas lereng batuan tersebut, dan pada tahun ke-10 diindikasikan nilai Safety Factor (SF) <1,3. Kata kunci: Kuat geser, siklus basah-kering, batuan  Abstract Landslide is a process of mass transfer of rock or soil due to the influence of gravity in response to natural activities that cause damage to the surface morphology of the slopes, and the landslide that occurred in Wonogiri was probably due to weathering of rock layers due to frequent rainfall in the area. This research was conducted with the stages of taking rock samples, measuring and collecting secondary data. Rock classification uses RQD, RMR and Q-system parameters to determine rock characteristics. The results of the classification indicate that the rock layers at the landslide location are in the moderate to very vulnerable category to weathering. By considering the rainfall cycle and the amount of rain in days calculated in one year, it is known that there is a reduction in rock strength based on previous research. The results of the finite element method analysis showed that there was a reduction in rock strength based on shear parameters which resulted in the stability of the rock slopes, and 10th year indicated the value of Safety Factor (SF) <1.3. Keywords: Landslide, wet-dry cycle, rock 
Co-Authors Adolf Situmorang Agus Muldiyanto, Agus Anggraini, Nurti Kusuma Bagus Hario Setiadji Cholida, Nur Fithria Fatma Christa, Ngudi Hari Diah Rahmawati Enggartiasto, Lintang Etika Herdiarti Kukuh Wisnuaji Widiatmoko Kusrin, Kusrin Magenda, Cattelya Ester Mukti, Galang Wicaksono Nur Azizah pratiwi, yesina intan Priyono, Eko Yuli purwanti, hani Suharyo, Seno SUPRIYONO . sutik, sutik Trias Widorini