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All Journal PENDIPA Journal of Science Education Portal: Jurnal Teknik Sipil
Putri, Ananda Agneshia
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Chemistry Civil Engineering, Building, Construction & Architecture Education Mathematics

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Journal : PENDIPA Journal of Science Education

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Peningkatan Efisiensi Operasional Commuter Line Jogja-Solo Melalui Perbaikan Jadwal Putri, Ananda Agneshia; Oktavianto, Alfin; Pamursari, Nurmagita; Sari, Nurwanda
PendIPA Journal of Science Education Vol 8 No 2 (2024): June
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.2.368-376

Abstract

The Commuter Line is a train service that serves short routes within or between cities, mainly for daily commuters in urban areas. Launched on February 10, 2021 to replace KRD Prameks, KRL Jogja-Solo aims to improve the efficiency of intercity travel. Passenger numbers for KRL Jogja-Solo continue to increase, based on PT KAI Commuter Line's latest data, with passenger numbers per month in 2023 showing a significant increase. For example, in August there were 512,547 passengers, while in December it increased to 709,634 passengers. This increase creates pressure on the existing carrying capacity. This research aims to assess the challenges faced by KRL Jogja-Solo in accommodating the increasing number of passengers and find solutions to meet the growing demand. This research focuses on improving the operational efficiency of KRL Jogja-Solo through schedule improvements, assessing passenger volume, cross capacity, and passenger projections for the period 2024-2033. The Scott method is used for cross capacity analysis and the geometric growth formula for passenger projections, with optimal solutions based on optimistic, moderate, and pessimistic scenarios. Results show that the addition of four afternoon trips and skip-stop scheme is the best solution in the optimistic scenario, skip-stop scheme without additional trips in the moderate scenario, and improvement of the existing schedule in the pessimistic scenario. This research emphasizes the importance of long-term planning and regular evaluation to ensure the smoothness and convenience of the Jogja-Solo KRL service.
Analysis of Construction Operations for The Development of High Speed Railway Jakarta-Bandung (Project Team Section 3 using The Cement Fly- Ash Gravel Pile Methode) Putri, Ananda Agneshia; Pratama , Yuda Andika; Ginting, Emanuella; Abrar, Nisrina
PendIPA Journal of Science Education Vol 9 No 2 (2025): June
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.2.530-536

Abstract

Construction operation modeling is carried out to understand the behavior of the construction operating system better. Further, construction operation modeling can provide an overview of productivity and duration of completion, as well as make it easier to solve problems from the perspective of the whole model. In this paper, we conduct a CYCLONE modeling simulation in construction operations on the PT Kereta Cepat Indonesia China (KCIC) Project to build the Jakarta-Bandung High Speed Railway (Jakarta- Bandung / KCJB Fast Train using CFG Pile Construction operations. The CFG Pile construction in section 3 is carried out for 21,000 points and has repeated construction work so that it can perform a cyclone method simulation using productivity analysis with the help of MATLAB software (Simulink-Simevent). This simulation is executed for 30 cycles until the productivity results from the simulation have reached steady state conditions. Productivity result from both softwares produce almost the same results, respectively 0.675 from the COST program and 0.7427 from the MATLAB program. Based on the results of the sensitivity analysis, it can be concluded that the addition of resources such as number of drilling rigs, concrete pumps, and mixes truck will increase project productivity.
Analysis of the Effect of Rail Connection Failure Using the AHP, FMECA, WRPN Methods (Case Study of the Tanjung Karang Station – Rejosari Station Crossing) Febriyadi; Bustam, Hadyan Arifin; Setyaji, Arif; Melyta, Elyabet; Pamursari, Nurmagita; Putri, Ananda Agneshia
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.701-710

Abstract

Rail joints are critical points in railway track infrastructure that affect passenger train ride comfort and safety. This study analyzes their impact along the Tanjung Karang – Rejosari line through Track Quality Index (TQI) and International Roughness Index (IRI Roadbump) measurements, passenger perception surveys using the Analytic Hierarchy Process (AHP), and failure risk evaluation using Failure Mode, Effects, and Criticality Analysis (FMECA) with Weighted Risk Priority Number (WRPN). Results indicate that joints with high TQI and IRI values produce significant impacts, reducing comfort. AHP identified impacts as the dominant factor, while FMECA found the highest RPN in thermite welded joints with the failure mode of “joint corrosion.” The study recommends replacing thermite welding with flash butt welding and converting mechanical joints to permanent welded joints to improve track geometry, reduce failure risk, and enhance comfort and safety.
Co-Authors Abrar, Nisrina Alfarizi, Dava Bustam, Hadyan Arifin Febriyadi Ginting, Emanuella Melyta, Elyabet Nurmagita Pamursari Oktavianto, Alfin Pratama , Yuda Andika Sari, Nurwanda Setyaji, Arif Siti, Maulidina