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All Journal Teras Jurnal International Journal of Engineering, Science and Information Technology Jurnal Teknik Sipil (JUTSI)
said jalalul akbar
Universitas Malikussaleh
Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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RELIABILITY-BASED APPROACH FOR RESIDUAL LIFE PREDICTION OF BRIDGES SUBJECTED TO EARTHQUAKE SHOCKS DEGRADATION Maizuar Maizuar; said jalalul akbar; Wesli Wesli
TERAS JURNAL Vol 9, No 1 (2019): Volume 9, Nomor 1, Maret 2019
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.729 KB) | DOI: 10.29103/tj.v9i1.189

Abstract

Structural degradation caused by sudden damaging extreme events (e.g. earthquake) has significant impact on residual life of bridges and ultimately the collapse of bridges. This paper presents a reliability-based approach of a bridge subjected to shock degradation caused by earthquake events. In particular, this study develops a numerical procedure for assessing time dependent probability of failure to estimate the residual life a bridge. Key factors that govern the residual life of a bridge (e.g., damage size caused by earthquake shocks and loss of initial structural capacity) were investigated. The results of study show that both damage size caused by earthquake shocks and loss of initial structural capacity are key factors that govern residual life of a bridge. Keywords: residual life, earthquake, shock degradation, bridge.
Monitoring the Dynamic Behavior of PCI Bridges Using Short Period Seismograph and CSI Bridge Modeling Said Jalalul Akbar; Maizuar Maizuar; Khairullah Yusuf; Joni Arfiandi
International Journal of Engineering, Science and Information Technology Vol 1, No 4 (2021)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (581.345 KB) | DOI: 10.52088/ijesty.v1i4.168

Abstract

Bridges are a critical part of transport infrastructure networks for social activities and economics of human life. Dynamic analysis of bridge is very important to perform in order to ensure the ability of the bridge to withstand loads and maintain the sustainability of transport infrastructure. This paper presents a methodological framework for monitoring dynamic behavior of the bridge (e.g., natural frequencies, displacement time history) by using civil engineering micro-tremor technique and numerical modeling. The study was conducted at the Alue Raya Bridge located in Lhokseumawe City, Aceh Province, Indonesia. To capture the dynamic behavior of the bridge under traffic loading, the micro-tremor techniques, e.g., Short Period Seismograph (SPS) sensor was placed underneath the bridge at the mid span of the bridge girder. The obtained vibration data were processed using Geopsy software. A three dimensional (3D) model of the bridge was then developed by using CSI Bridge software. The modal analysis was conducted to obtain the modal natural frequencies of the bridge due to traffic loads. The natural frequency measurements using SPS were compared with the simulation results. Through analyzing the measured results, it was found that the natural frequency of the bridge is around 4,3275 Hz which is very close to those obtained from numerical modeling using CSI bridge software. The measured maximum vertical displacement of the bridge girders is below 5mm under normal traffic condition which is under the allowable serviceability limit state requirements of the bridge. The outcomes of this study could have the potential to enable maintenance and capital works decisions which are an important component of the sustainability of transport infrastructure.
Karakterisitik Marshall Campuran Aspal AC-WC Dengan Bahan Tambah Graphene Yang Dipapar Pada Ambient temperature Wahyu Pulungan; Said Jalalul Akbar; Maizuar
Jurnal Teknik Sipil Vol 1 No 2 (2025): Jurnal Teknik Sipil (JUTSI)
Publisher : Universitas Sulawesi Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/jutsi.v2i2.5576

Abstract

Peningkatan suhu permukaan bumi dan kondisi iklim tropis yang fluktuatif dapat mempercepat penuaan aspal dan menurunkan performa perkerasan jalan, khususnya pada lapisan Asphalt Concrete–Wearing Course (AC-WC). Salah satu pendekatan untuk mengurangi dampak ini adalah penambahan graphene , nanomaterial yang mampu meningkatkan ikatan antara aspal dan agregat. Penelitian ini mengevaluasi pengaruh graphene sebesar 0,04% terhadap karakteristik Marshall campuran AC-WC yang dipaparkan pada ambient temperature dengan suhu rata-rata harian 27°C (23,9–31,8°C) dan kelembapan rata-rata 87,93%. Hasil pengujian menunjukkan bahwa campuran dengan graphene mempertahankan stabilitas lebih lama dibanding campuran normal, dengan peningkatan awal hingga 12,87%, sedangkan flow meningkat 15,68% secara bertahap dengan laju lebih rendah, dan Marshall quotient lebih tinggi pada awal hingga pertengahan pemaparan. Penambahan graphene secara keseluruhan memperlambat degradasi campuran AC-WC akibat fluktuasi suhu dan kelembapan tinggi, sehingga meningkatkan ketahanan dan ketegaran struktural campuran pada kondisi tropis.
Co-Authors Burhanuddin Burhanuddin Futri Habibah Afriandani Joni Arfiandi Khairullah Yusuf M. Jamil Maizuar Maizuar Wahyu Pulungan Wesli Wesli