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All Journal Jurnal Proyek Teknik Sipil International Journal of Engineering, Science and Information Technology Scientica: Jurnal Ilmiah Sains dan Teknologi Advance Sustainable Science, Engineering and Technology (ASSET)
Alghiffary, Rizqi
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PENGERJAAN TIMBUNAN MENGGUNAKAN METODE TRAP PADA PROYEK JALAN TOL SOLO – YOGYAKARTA – NYIA KULON PROGO PAKET 1.2 Pratama, Ananda Adi; Firmansyah, Fadil; Alghiffary, Rizqi
Scientica: Jurnal Ilmiah Sains dan Teknologi Vol. 3 No. 2 (2024): Scientica: Jurnal Ilmiah Sains dan Teknologi
Publisher : Komunitas Menulis dan Meneliti (Kolibi)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.572349/scientica.v3i2.4584

Abstract

Timbunan merupakan elemen penting dalam proyek konstruksi, terutama dalam konteks stabilitas tanah dan daya dukung struktur. Pada proyek Jalan Tol Solo – Yogyakarta – NYIA Kulon Progo Paket 1.2, metode TRAP diterapkan untuk mengatasi tantangan geoteknik, seperti risiko longsor dan ketidakstabilan tanah. Penelitian ini menggunakan kajian literatur dan observasi lapangan untuk menganalisis efektivitas metode TRAP. Hasil penelitian menunjukkan bahwa metode TRAP secara signifikan meningkatkan kepadatan tanah, memperkuat daya dukung tanah dasar, serta mengurangi risiko longsor. Meskipun demikian, penerapannya menghadapi kendala seperti pengelolaan drainase di daerah berpasir dan wilayah dengan curah hujan tinggi. Dengan perencanaan dan pengawasan yang baik, metode TRAP dapat menjadi solusi andal dalam meningkatkan stabilitas dan keberlanjutan proyek konstruksi.
Financial Performance Assessment of Flat Buildings Using Life Cycle Cost and Cost–Benefit Analysis Velantika, Griselda Junianda; Mikhail, Reguel; Putri, Karina Meilawati Eka; Widowati, Elok Dewi; Alghiffary, Rizqi; Akbari, Muhamad Fauzan
Advance Sustainable Science Engineering and Technology Vol. 7 No. 1 (2025): November-January
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i1.1005

Abstract

Buildings resulting from construction projects are durable assets and decisions related to construction projects have enduring impacts. In many cases, building owners prioritize only the initial costs, such as building design, construction, and equipment costs, while neglecting the future operation and maintenance costs. This research studies life cycle costing (LCC) analysis to evaluate the financial feasibility of urban housing. The LCC calculates all the costs incurred and benefits during the building's operation. The cost is generated from construction, operational, and maintenance costs. At the same time, the benefit breaks down into flat rental costs, retail rental costs, and parking costs. The costs incurred are estimated over 25 years, and the parameters of feasibility are net Present Value (NPV), Benefit-Cost Ratio (BCR), and Internal Rate of Return (IRR). The study generates negative NPV, BCR < 1, and 0.61% of IRR. It indicates that the project is not feasible. This research gives alternatives to make the project feasible. This study employed a trial-and-error approach to ascertain the viability of investing in flat rentals by systematically adjusting rental rates. Incremental adjustments to rental rates are tested by a series of rate hikes of 50%, 100%, 150%, and 200% using a trial-and-error approach. The project will become feasible if the flat rate increases to 150-200% of the initial rental rate.
Design of Semujur Bridge with Diagonal Steel Box Arch Bridge Alghiffary, Rizqi; Junianda Velantika, Griselda; Eka Putri, Karina Melawati; Dewi Widowati, Elok; Fauzan Akbari, Muhamad
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.900

Abstract

Transportation is an integral part of social life. One of the structures that can support transportation is the bridge. The construction of the Semujur Bridge will be planned to meet and support transportation needs. This bridge is expected to be a new connecting bridge to cut travel time in Pangkal Pinang City. Semujur Bridge, with a width of 20 meters and a total length of 100 meters, is planned to use a steel arch bridge because the arch bridge can reduce the bending moment on the bridge. The bridge uses a box girder cross section because the arch bridge with a steel box cross-section is considered more economical and has higher flexural strength and torsional stiffness. Semujur Bridge will also have a diagonal arch. With the new construction design, it is expected to be a structurally strong bridge, both against earthquake loads and bridge dynamic loads. As a result, in this study, it was found that the longitudinal girder WF 600x300x14x23, transverse girder GIRDER 1500x400x30x30, tie beam BOX GIRDER2500x2000x40x40, and Macalloy 520 (M100) hanging cable with a diameter of 97 mm.
Analisis dan Desain Modifikasi Jembatan Rangka Busur Baja dengan Fluid Viscous Damper Menggunakan SAP2000 Akbari, Muhamad Fauzan; Saputra, Yohanes Hadi; Alghiffary, Rizqi; Velantika, Griselda Junianda; Eka Putri, Karina Melawati; Widowati, Elok Dewi
Jurnal Proyek Teknik Sipil Vol 8, No 2 (2025): September
Publisher : Civil Infrastructure Engineering and Architectural Design

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/potensi.2025.29068

Abstract

ABSTRACT The bridge design modification presented in this study focuses on implementing a steel arch truss system combined with Fluid Viscous Dampers (FVDs) to improve structural efficiency and seismic resilience. The steel arch truss enables a longer main span with fewer intermediate supports, offering construction advantages, enhanced stability, and improved aesthetics. Additionally, the integration of FVDs aims to reduce structural displacements during seismic events, thereby minimizing potential post-earthquake damage.The object of this study is referred to as Bridge XYZ, assumed to be one of the key bridges in Gresik Regency, serving as a vital connection between Gresik and Lamongan. This bridge plays a strategic role in supporting mobility and logistics distribution in the region, making structural optimization and seismic mitigation essential. The research methodology includes data collection and literature review, followed by the structural redesign process. Structural modeling and analysis were conducted using SAP2000 software, adhering to Indonesian bridge and seismic design standards. The primary objective is to develop a single-span bridge configuration using steel orthotropic decks for a lighter superstructure and to evaluate the effectiveness of FVDs in reducing seismic-induced displacements. The analysis results show that the redesigned bridge utilizes BJ55 steel orthotropic deck plates with T-profile ribs, cross girders with WF profiles, tie beams with box girders, and Macalloy suspension cables. The application of FVDs successfully reduced seismic displacement by 3% to 45%, demonstrating their effectiveness in enhancing the bridge’s structural resilience.KEYWORDS Fluid Viscous Damper; SAP2000; Steel Arch Truss.
Co-Authors Akbari, Muhamad Fauzan Dewi Widowati, Elok Eka Putri, Karina Melawati Fauzan Akbari, Muhamad Firmansyah, Fadil Junianda Velantika, Griselda Mikhail, Reguel Pratama, Ananda Adi Putri, Karina Meilawati Eka Saputra, Yohanes Hadi Velantika, Griselda Junianda Widowati, Elok Dewi