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Modifikasi Perencanaan Struktur Apartemen Alessandro Vittorio dengan Metode Beton Pracetak Mahendra, Zein Farid Vicky; Sutrisno, Wahyuniarsih; Habieb, Ahmad Basshofi
Jurnal Teknik ITS Vol 12, No 2 (2023)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373539.v12i2.114560

Gedung Apartemen Alessandro Vittorio merupakan gedung yang berlokasi di Surabaya dan memiliki 28 lantai. Dalam pembangunannya, Gedung Apartemen Alessandro Vittorio masih menggunakan metode konvensional berupa metode cor in situ pada struktur balok, kolom, dan pelatnya. Atas dasar ini penulis merencanakan ulang gedung Apartemen Alessandro Vittorio, dengan menggunakan metode beton pracetak dengan maksud untuk menghasilkan sebuah rancangan baru yang dapat lebih cepat dan efisien dilaksanakan tanpa mengurangi mutu dari rancangan aslinya. Dalam perencanaan ulang gedung Apartemen Alessandro Vittorio, penulis mengubah denah dari Tower A dimana akan dipisah dengan tower yang lain. Namun, sistem gedung yang digunakan tetap sama, yaitu sistem struktur ganda dengan rangka pemikul khusus momen disertai dengan dinding geser beton bertulang. Hasil dari modifikasi Gedung Apartemen Alessandro Vittorio dengan metode pracetak ini meliputi ukuran balok induk 30/45, 35/60, dan 45/70, ukuran balok anak 25/40 dan 30/45, serta ukuran kolom 110/90, 90/70, 80/60, dan 50/50. Modifikasi gedung ini juga menggunakan shear wall serta sambungan antar elemen pracetak menggunakan sambungan basah dan konsol pendek.

Modifikasi Struktur Jembatan Kereta Api Elevated Simpang Joglo dengan Sistem Cabled-Stayed Double Plane Bridge Sianipar, Koresy Kevin Hamonangan; Sugihardjo, Hidajat; Habieb, Ahmad Basshofi
Jurnal Teknik ITS Vol 12, No 2 (2023)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373539.v12i2.121494

Jembatan adalah suatu konstruksi yang meneruskan jalan melalui suatu rintangan yang permukaannya lebih rendah. Jembatan cable-stayed adalah salah satu jenis jembatan bentang panjang dengan sistem cable suported dengan bentang lebih dari 150 m. Jenis jembatan ini sudah banyak dibangun di berbagai belahan dunia karena terbukti efektif dan efisien untuk bentang jembatan lebih 150 m. Struktur jembatan cable-stayed terdiri atas gelagar utama sebagai dek lantai kendaraan, kabel yang berfungi menyalurkan beban dari gelagar utama menuju pilon, dan pilon sebagai penahan kabel. Perencanaan ini membahas “Modifikasi Struktur Jembatan Kereta Api Elevated Simpang Joglo dengan Sistem Cable-stayed Double Plane Bridge” yang melintasi simpang tujuh Joglo di Kecamatan Banjarsari, Kota Surakarta. Jembatan ini memiliki bentang 271,4 m terbagi dalam 2 bentang dengan lebar 9 m dan jumlah pylon berjumlah 2 buah. Konfigurasi kabel jembatan arah memanjang menggunakan tipe semi harp pattern dan arah melintang menggunakan sistem double plane. Gelagar utama direncanakan menggunakan twin rectangular box girder. Metode pelaksanaan pembangunan jembatan menggunakan metode balanced cantilever yang dianalisis dengan backward analysis. Perencanaan modifikasi dimulai dari studi literatur dan pengumpulan data, preliminary design, perhitungan pembebanan, desain struktur lantai kendaraan , desain struktur utama (box girder, pylon dan kabel), kontrol statis dan dinamis, kontrol perilaku aerodinamis, analisis staging, desain angker dan sambungan, perencanaan perletakan, hingga pembuatan gambar rencana. Hasil dari perencanaan ini didapatkan dimensi lantai kendaraan, dimensi box girder, dimensi kabel, dimensi pylon, dimensi angkur dan sambungan, dan dimensi perletakan jembatan. Perencanaan modifikasi dibantu dengan software MidasCivil, SAP2000 dan Autocad. Peraturan yang digunakan adalah PM. 60 Tahun 2012, SNI 2833:2016, SNI 1729 : 2020 dan SNI 2847:2019.

An Experimental Study on Axial Stress-Strain Behaviour of FRP-Confined Square Lightweight Aggregate Concrete Columns Butje Alfonsius Louk Fanggi; Budi Suswanto; Yuyun Tajunnisa; Jusuf Wilson Meynerd Rafael; Jonatan Lassa; Ahmad Basshofi Habieb
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.v7i1.865

This article presents the results of a research project that aimed to evaluate how the number of fiber-reinforced polymer (FRP) layers and the compressive strength of concrete affect the stress-strain behaviors of concrete columns produced from artificial lightweight aggregate with square cross-sectional shapes. Eighteen test specimens were manufactured and wrapped with glass fiber-reinforced polymer (GFRP) material. The specimens were later subjected to concentric compression for experimental evaluation. The experimental results suggest that GFRP efficiently confines square lightweight aggregate concrete columns. Furthermore, the test results indicate that adding FRP layers augments the ultimate stress and strain. Finally, the results suggest that an increase in the compressive strength of concrete leads to a corresponding increase in the ultimate stress. On the other hand, it has been observed that the ultimate strain decreases as compressive strength increases. The research findings reveal the behaviour of FRP-confined square lightweight aggregate concrete columns, which may also be utilized to formulate a new design-oriented model for these columns.

NUMERICAL ANALYSIS OF SHEAR CAPACITY OF DOUBLE CORRUGATED WEB GIRDER INFILLED Mahzumah, Cindy; Kristijanto, Heppy; Habieb, Ahmad Basshofi; Ghifari, Fikri
Journal of Civil Engineering Vol 40, No 1 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v40i1.21662

This research investigates the shear capacity of double corrugated web steel I- girders filled with concrete using finite element analysis. The study examines the influence of the corrugation angle and the thickness of the concrete filling on the strength capacity of the girder beams. Four beams were designed to fail in shear along a 1500 mm span from the left support of the beam, enabling the determination of shear failure conditions. Each beam had identical properties with a flange width (B) of 250 mm, a web height (H) of 1000 mm, a span length of 3500 mm, a flange thickness (tf) of 15 mm, and a web thickness (tw) of 1 mm. The research employed a 3-point bending method, applying a single load point 1500 mm from the left support. The tests were conducted by varying the corrugation angles and the thickness of the concrete filling in the corrugated web, which served as the research variables. The study aimed to determine the peak load-deflection curve, the failure mode diagram, and the shear capacity of the girder beams. The results of the tests showed that the double corrugated web steel I-girder filled with concrete, with a corrugation angle of 45 degrees and a concrete thickness of 65 mm, exhibited the best load-bearing strength among the three variations tested. It demonstrated a 52.65% increase in load capacity and a 53.49% reduction in deflection compared to the finite element validation test values. In contrast, the other three variations showed a decrease in shear strength.

A Study on the Effects of Implementing Base Isolation System for Existing RC Buildings on Soft Soil Firmansyah, Muhammad Farhan; Habieb, Ahmad Basshofi; Faimun, Faimun
Journal of Civil Engineering Vol 40, No 1 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v40i1.19925

The occurrence of earthquakes is frequent in Indonesia due to its position in a highly active tectonic zone. One approach to improve the seismic performance of existing buildings is through the use of base isolation. The concept of using base isolation systems aims to increase the natural period of structures and provide additional damping to reduce seismic forces on the structures. A comparative study was performed between a fixed base system and base isolated system in a 13-story reinforced concrete building located in Surabaya on soft soil. Subsequently, these models were evaluated for their structural response using the nonlinear time history analysis. The results demonstrate that the use of base isolation systems can significantly elongate the building’s natural period, resulting in a significant decrease in the base shear, acceleration response, drift, and the plastic hinge formed. This study proves that this technology is suitable to be applied to existing buildings with satisfactory results.

Experimental Study of Two-way Half Slab Precast Concrete using Rextangular Rigid Connection Djoko Irawan; Ahmad Basshofi Habieb; Data Iranata; Priyo Suprobo; I Gusti Putu Raka
Civil Engineering Dimension Vol. 26 No. 1 (2024): MARCH 2024
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.26.1.63-70

A half-slab precast concrete (HSPC) system with precast bottom layers and in-situ cast top layers has been widely applied in various constructions. It generally behaves as a one-way slab due to the absence of positive-flexural reinforcements in the perpendicular direction to the precast component. However, in some cases, the HSPC was also applied in a two-way slab system. Consequently, a particular design and treatment in the connection between precast members was required, so that the bending moment in two orthogonal directions could be accommodated. In the present study, an innovative rectangular rigid connection (RRC) in a two-way HSPC system was investigated through an experimental test. It was found that the RRC-HSPC presented only a 9.13% reduction of the load at the crack, a 16.44% reduction of the ultimate load, and a 6.06% increase of the deflection at the crack when compared to the monolithic one.

Seismic Evaluation of Graha 10 Nopember Building Using Indonesian Earthquake Hazard Deaggregation Map 2022 Aini, Khusniatul; Habieb, Ahmad B. Habieb Basshofi
Journal of Civil Engineering Vol 40, No 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20861206.v40i2.20180

The occurrence of large-scale earthquakes in Indonesia is still one of the phenomena that often occurs, this can cause damage to buildings, so applying standardization of earthquake-resistant buildings during construction is necessary. This study review was carried out on Graha Sepuluh Nopember building using evaluation method to earthquake-resistant buildings regulated in Indonesian Earthquake Hazard Deaggregation Map (Pusgen, 2022). The model was evaluated using nonlinear time history analysis in order to obtain behavior in post-elastic conditions. The result of this research uses parameters of displacement and plastic hinge, indicates that the building has immediate occupancy performance level means that the building structure is safe, structural failure is not significantly damaged and can be used again immediately.Keywords Nonlinear time history analysis, Indonesian earthquake hazard deaggregation map, earthquake-resistant building, ground motion

An Experimental Study on Axial Stress-Strain Behaviour of FRP-Confined Square Lightweight Aggregate Concrete Columns Louk Fanggi, Butje Alfonsius; Budi Suswanto; Yuyun Tajunnisa; Jusuf Wilson Meynerd Rafael; Jonatan Lassa; Ahmad Basshofi Habieb
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.v7i1.865

This article presents the results of a research project that aimed to evaluate how the number of fiber-reinforced polymer (FRP) layers and the compressive strength of concrete affect the stress-strain behaviors of concrete columns produced from artificial lightweight aggregate with square cross-sectional shapes. Eighteen test specimens were manufactured and wrapped with glass fiber-reinforced polymer (GFRP) material. The specimens were later subjected to concentric compression for experimental evaluation. The experimental results suggest that GFRP efficiently confines square lightweight aggregate concrete columns. Furthermore, the test results indicate that adding FRP layers augments the ultimate stress and strain. Finally, the results suggest that an increase in the compressive strength of concrete leads to a corresponding increase in the ultimate stress. On the other hand, it has been observed that the ultimate strain decreases as compressive strength increases. The research findings reveal the behaviour of FRP-confined square lightweight aggregate concrete columns, which may also be utilized to formulate a new design-oriented model for these columns.

Damage Detection in Gusset Plates of Steel Truss Bridges using Modal Parameters: Experimental and Numerical Study Kristijanto, Heppy; Fitriyah, Dita Kamarul; Habieb, Ahmad Basshofi
Civil Engineering Dimension Vol. 27 No. 2 (2025): SEPTEMBER 2025
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.27.2.225-238

Corrosion in gusset plate elements has become a critical factor in bridge structural failures, emphasizing the need for more accurate and reliable damage detection methods. Conventional visual inspections are limited in precision and cannot provide real-time monitoring, underscoring the importance of advanced techniques. This study proposes a vibration-based Structural Health Monitoring (SHM) approach employing modal parameter indices, namely Mode Shape (MS), Mode Shape Curvature (MSC), Mode Shape Slope (MSS), and Mode Shape Curvature Square (MSCS), to detect damage in bridge components. Damage scenarios were simulated by introducing gusset plate cuts of 5%, 10%, and 20% to represent different levels of corrosion. The results indicate that MSC and MSCS are the most reliable methods for identifying damage locations in complex structural systems, as they capture mode shape alterations with high sensitivity. Furthermore, the accuracy of modal parameter analysis improves with increasing damage severity. These findings confirm MSC and MSCS as robust tools for early-stage corrosion detection in SHM applications.

Perilaku tegangan-regangan beton yang terbuat dari agregat ringan buatan yang diperkuat dengan carbon fiber reinforced polymer Louk Fanggi, Butje Alfonsius; Suswanto, Budi; Tajunnisa, Yuyun; Basshofi Habieb, Ahmad; Meynerd Rafael, Jusuf Wilson; Habibillah Asyari, Yudhistira; Rijiyawanto, Adetya; Syifaul Ummah, Galih
JURNAL TEKNIK SIPIL Vol 12, No 2 (2023): Volume 12 Nomor 2 November 2023
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v12i2.35175

This paper describes the findings of a research study aimed at evaluating the impact of various parameters on the stress-strain behavior of concrete composed of artificial lightweight aggregates with rectangular cross-sections. The factors that were evaluated include the number of fiber-reinforced polymer (FRP) layers, the compressive strength of the concrete, and the cross-sectional shape of the concrete. A total of twenty-two test specimens were fabricated, wrapped with Fiber Reinforced Polymer (FRP), and subjected to concentric compressive loading for experimental evaluation. The experimental findings indicate that Fiber Reinforced Polymer (FRP) demonstrates an excellent wrapping technique for lightweight concrete composed of lightweight aggregate. In addition to this, the test findings indicate a positive correlation between the number of fiber-reinforced polymer (FRP) layers employed and the resultant ultimate stress and strain shown by concrete composed of artificial lightweight aggregate. The test results additionally demonstrate a clear relationship between the rise in ultimate stress and the compressive strength of concrete, while showing an inverse relationship with the ultimate strain observed. Similarly, the test results indicate that the utilization of Fiber Reinforced Polymer (FRP) wrapping has more efficacy when applied to round cross-sectional shapes as opposed to rectangular cross-sectional shapes.

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