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All Journal EPI International Journal of Engineering Paulus Civil Engineering Journal Jurnal Surya Teknika
Rizki Amaliah
Universitas Tadulako
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Transportation

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Journal : Paulus Civil Engineering Journal

 1 
Evaluasi Perilaku Tanah Dasar Embung Rano Tadulako terhadap Pengaruh Gempa Rodiah , Fiisyatin; Sarika , Hardiyanti; Amaliah , Rizki; Warliawati , Sri; Andjani, Ni Made Ayu Juli
Paulus Civil Engineering Journal Vol. 7 No. 4 (2025): Paulus Civil Engineering Journal, Vol.7, No.4
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/zj8j2t19

Abstract

Palu City is an earthquake-prone area, notably marked by the September 28, 2018 earthquake (Mw 7.4) which caused significant damage. Rano Tadulako Reservoir serves as a crucial raw water supply for Tadulako University, necessitating evaluation of its subgrade stability against seismic effects. This study evaluates subgrade stability through dynamic bearing capacity analysis using the pseudostatic method. Primary data includes Cone Penetration Tests at 4 points across 20 cross-sections, while secondary data comprises seismic parameters showing PGA = 0.919 g. Analysis involved calculating horizontal seismic coefficient (kh = 0.46), ultimate bearing capacity using Terzaghi's method, and seismic capacity reduction. Results show 84% of the reservoir (16 of 19 segments) meets safety criteria with SF ≥ 1.5, ranging from 0.150 to 7.402. Critical points were identified at segments 9-10 with SF = 0.150. Overall, the subgrade is relatively safe, though local reinforcement and continuous monitoring are essential for long-term stability.
Tinjauan Literatur Sistem Peringatan Fase Hijau: Efisiensi dan Keselamatan pada Simpang Bersinyal Ratnasari Ramlan; Jurair Patunrangi; Ismadarni; Rizki Amaliah; Tri Wahyuningsih
Paulus Civil Engineering Journal Vol. 7 No. 4 (2025): Paulus Civil Engineering Journal, Vol.7, No.4
Publisher : Universitas Kristen Indonesia Paulus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52722/x80hc005

Abstract

Signalized intersections are critical components of urban traffic systems. However, inefficiencies caused by start-up lost time (SULT) and increased accident risks remain major challenges. Green Phase Warning Systems (GPWS) have emerged as an Intelligent Transportation System (ITS) innovation to reduce SULT and improve traffic safety. This paper presents a literature review of GPWS research published from 2010 to 2025. Findings show that GPWS reduces driver reaction time by 15–25%, increases intersection throughput up to 20%, and decreases rear-end collision risks. However, its effectiveness in heterogeneous traffic contexts, particularly in Indonesia where motorcycles dominate, remains limited. Future studies should focus on adaptive GPWS designs tailored for mixed traffic and explore policy frameworks supporting large-scale adoption.
Co-Authors Fiisyatin Rodiah Firhansyah Hardiyanti Sarika Hera Widyastuti Ismadarni Jurair Patunrangi Ni Made Ayu Juli Andjani Ratnasari Ramlan Sarika , Hardiyanti Tri Wahyuningsih Warliawati , Sri Warliawati, Sri