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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik Sipil Jurnal Teknik Sipil dan Perencanaan Jurnal Transportasi Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Semesta Teknika Dinamika Teknik Sipil Astonjadro JUITECH: Jurnal Ilmiah Fakultas Teknik Universitas Quality Makara Journal of Technology
Suprapto Siswosukarto
Universitas Gadjah Mada Yogyakarta
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Bridge Maintenance Strategy: Application of Bridge Condition Index (BCI) UK to Ngawi Kertasono Toll Road Bridge Sari, Halima Irianti Puspita; Siswosukarto, Suprapto; Aminullah, Akhmad
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.70211

Abstract

In the context of toll road infrastructure, bridges are essential for connecting two distinct sections and ensure the toll road functioning properly. Therefore, to accomplish that objective and, at the same time, optimize the allocation of limited funds for maintenance, bridges require a proper maintenance priority strategy. However, in Indonesia's Bridge Management System (BMS), the importance weight of the bridge elements has not yet been used and the final result still causes bias while assembling the rankings of handling priorities. The Bridge Condition Index (BCI), developed in the United Kingdom, offers a bridge handling priority system that is determined by the importance of each bridge element. To determine the effectiveness of the BCI UK method, an analysis was carried out using the results of a visual inspection of five river bridges located on the Ngawi Kertasono toll road. According to the handling ranking result, Kedungrejo Bridge appears to be on the first rank with the dominant defect occurred on the pier element. Sukoharjo Bridge, on the other hand, has the dominant defect happened in the carriageway surfacing and is ranked last. The outcomes itself indicate that bridges with defects in critical elements, which can affect the structural stability of the bridge, will be prioritized to be repaired prior to bridges with non-structural element damages. Moreover, suitable repair recommendations can be made based on the type and severity of the damage itself. Furthermore, this result is expected to be taken into account while developing the Indonesian bridge management system in the future.
Mix Design of Geopolymer No-fines Concrete with Fly Ash and Ground Granulated Blast Furnace Slag Yuhasnita, Angeline; Siswosukarto, Suprapto; Satyarno, Iman
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.74239

Abstract

The use of geopolymers as a cement replacement in no-fines concrete can be a solution to address the impact of cement production on global warming. The absence of standardized mix designs for geopolymer paste poses a challenge, particularly concerning workability in no-fines geopolymer concrete mixes, where insufficient workability can hinder compacting, while excessive workability may cause segregation. Additionally, geopolymer often exhibits a quick hardening time, necessitating the use of retarders such as borax. This study aims to evaluate the impact of varying the ratio of alkali activator to cementitious material (A) at 0.25, 0.30, and 0.35, with the addition of borax (C) at 3% and 5%, on the flow and hardening time of geopolymer paste. Additionally, the study aims to investigate the effect of the cement-to-aggregate volume ratio (P) on geopolymer no-fines concrete properties, particularly compressive strength and unit weight. In no-fines geopolymer concrete formulation, the absolute volume of geopolymer paste is equivalent to the volume of cement paste with a 0.4 water-to-cement (w/c) ratio, with a cement-to-aggregate volume ratio of 1:4 and 1:6. The geopolymer mixture consists of fly ash and GGBFS in a 50:50 ratio. The geopolymer activator consist of NaOH (10 M) and Na2SiO3 in a SS/SH (R) ratio of 2. The research results indicate that reducing the A ratio from 0.35 to 0.25 decreases flow and accelerates the hardening time of the geopolymer paste. Increasing the borax (C) content from 3% to 5% can prolong the hardening time and reduce flow (from 20.25 to 19.25 cm at an A ratio of 0.30). The test results of geopolymer no-fines concrete properties that increasing the volume ratio (P) from 1:4 to 1:6 can reduce the compressive strength from 30.95 to 13.27 MPa and the unit weight from 2158.83 to 1843.38 kg/m³ at (A) 0.35. However, in the concrete samples at this ratio, some voids were covered by paste. Therefore, it is recommended to use ratio (A) 0.30.
The Influence of Cement Type on Seawater-Affected Concrete Impermeability Arianto, Niky; Saputra, Ashar; Siswosukarto, Suprapto
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 2 (2024): December
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i2.75738

Abstract

The impermeability of concrete exposed to seawater is key in maintaining long-term structural integrity. In an exposed environment, concrete must be able to protect itself from seawater penetration which can potentially cause damage, corrosion and material degradation. This study aims to investigate the effect of different types of cement on the impermeability of concrete using Ground Granulated Blast-furnace (GGBFS) as concrete filler based on gradation to obtain dense concrete, especially when exposed to seawater during the maintenance period with age variations of 7, 28, and 56 days. Three types of cement available in the general public were used, namely, type V, Portland Composite Cement (PCC), Portland Pozzolan Cement (PPC). The research method used was experimental testing with 6 variations with the dimensions of a cylinder measuring 15x15x30 cm 3 and a cube measuring 15x15x15 cm3. The results obtained in the form of compressive strength test with the highest elastic modulus is cement type V GGBFS of 48.12 MPa with elastic modulus 38153.21 MPa while the smallest is Portland Pozzolan Cement (PPC) 35.93 MPa and 26339.61 MPa for elastic modulus. In this study, concrete mixes with Ground Granulated Blast Furnace Slag (GGBFS) showed a significant increase in compressive strength over time, despite initially having lower strength than regular cement mixes. The use of GGBFS in concrete offers long-term benefits, with the potential to achieve higher compressive strengths. This study demonstrates the importance of considering treatment time and the use of GGBFS in designing more durable and robust concrete mixes.
PENEMPATAN SENSOR AKSELEROMETER PADA JEMBATAN MERAH PUTIH Lautan Wijaya Nusantara, Johan; Aminullah, Akhmad; Siswosukarto, Suprapto
Jurnal Teknik Sipil Vol. 18 No. 1 (2024)
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jts.v18i1.10354

Abstract

Kegiatan monitoring pada jembatan perlu dilakukan sebagai upaya dalam menjamin keamanan jembatan. Secara umum terdapat dua metode monitoring kesehatan struktur jembatan yaitu dengan melakukan Loading Test secara langsung dan melalui Structural Health Monitoring System (SHMS) yang dapat dipantau secara real time dan kontinu. Salah satu sensor yang penting dan populer dalam kegiatan SHMS adalah akselerometer. Data dari sensor tersebut dapat diproses lebih lanjut untuk mengetahui nilai frekuensi struktur, mode shape, dan displacement yang terjadi. Hal tersebut bermanfaat dalam pemantauan kesehatan struktur jembatan secara keseluruhan dan dapat dijadikan dasar penetapan kebijakan untuk pemeliharaan jembatan, serta penyusunan tindakan preventif dan kuratif. Penempatan sensor yang baik dengan jumlah sensor yang tepat harus ditentukan untuk mengetahui perilaku struktur yang sebenarnya dengan biaya yang minimal. Penelitian ini bertujuan untuk mengevaluasi penempatan sensor akselerometer pada dek Jembatan Merah-Putih yang memiliki tipe double pylon cable stayed dengan bentang 300 m yang terletak di Kota Ambon, Provinsi Maluku, Indonesia. Empat metode Optimal Sensor Placement (OSP) telah dilakukan yaitu dengan Effective Independence (EI) Method, Eigenvalue Component Product (ECP), Mode Shape Summation Plot (MSSP) Method, serta Effective Independence – Drive Point Residu (EI-DPR) Method. Dari keempat metode tersebut, didapatkan bahwa penempatan sensor yang paling optimal didapatkan dari metode EI dengan jumlah sensor yang optimal adalah berjumlah 10. Konfigurasi sensor tersebut memiliki performa yang sedikit lebih baik dari konfigurasi sensor eksisting.
Evaluation of the Effectiveness of Swimming Pool Position as a Tuned Liquid Damper in Reducing the Drift Rasio Due to Earthquake Excitation with Response Spectrum Analysis Tuasikal, Nur Risa Cahyana; Supriadi, Bambang; Siswosukarto, Suprapto
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.17774

Abstract

Swimming pools integrated with the main structure are increasingly popular in modern high-rise buildings due to their aesthetic appeal and recreational value. As a result, there has been much research into the influence of swimming pools, which were previously considered as additional masses, now function as passive dampers, Tuned Liquid Dampers (TLD). The focus of the research is the optimal placement of the swimming pool position because the swimming pool can increase the eccentricity to the center of mass, which affects the dynamic behavior of the building. This study analyzes the position of the swimming pool to affect the TLD's effectiveness in reducing the drift ratio. The study was conducted numerically with ETABS at a 10-story hotel with two basements and a total building height of 39.6 meters. The swimming pool measuring 16.25 x 4.85 x 1.5 meters was analyzed in empty conditions and two positions, namely Pool P1 (existing pool) with a mass eccentricity of 20.679 m. In contrast, pool P2 is a pool with a position that is moved closer to the center of mass, with a mass eccentricity of 10.650 m. The swimming pool is modeled with a spring-mass model as a dynamic load, and the damping ratio is 5%. The analysis used the mass spectrum response method based on SNI 1726:2019.
Investigating the Influence of Rooftop Swimming Pool Depth as a Tuned Liquid Damper on Seismic Building Deflection Using Response Spectrum Analysis Rosediana, Risky Andayani; Supriadi, Bambang; Siswosukarto, Suprapto
ASTONJADRO Vol. 14 No. 2 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i2.17783

Abstract

Tuned Liquid Damper (TLD) is a control system used to reduce structural vibrations in buildings or other structures (Hochrainer & Ziegler, 2006). One innovative use of this control system is a rooftop swimming pool (JIN et al., 2023). Research on utilizing pools as TLDs has been conducted, but no study has specifically focused on selecting the optimal depth of a rectangular rooftop swimming pool in irregular buildings. This study aims to analyze the influence of the selection of rooftop swimming pool depth on an irregular building structure's deflection. The analysis was conducted using ETABS, with the object being a 10-story hotel building with 2 basements. The existing swimming pool, measuring 16.25 x 4.85 meters and located on the rooftop, was analyzed with 3 different depth variations. The swimming pool was modeled using a spring mass model as a dynamic load according to ACI 350.3-2020. The analysis was carried out using the response spectrum method with parameters based on the building's location. The analytical findings reveal that the swimming pool depth can influence its performance as a tuned liquid damper (TLD) in an uneven building construction. The research revealed that model 3 had the least maximum displacement, with a reduction of 2.72% in the x-direction and 3.27% in the y-direction. It can be inferred that in the examined building, a swimming pool with a depth of 2 meters (model 3) is more successful at decreasing displacement, particularly in the y-direction.
Numerical Analysis of Infill Plate Performance on Steel Plate Shear Wall (SPSW) Yobelita, Naomi; Siswosukarto, Suprapto; Muslikh, Muslikh; Purba, Ronny
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 19 No. 1 (2023): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v19i1.55973

Abstract

Steel Plate Shear Wall (SPSW) is one of the systems that can be used to minimize the effect of earthquakes on buildings. The main energy-absorbing element of the steel plate shear wall system is on the thin steel plate that are located on the center of the steel frame. This thin steel plate is called infill plates. This infill plate will later experience buckling and form a series of tension field action. This paper will prove that the infill plates in the steel plate shear wall system provides significant strength contribution in resisting lateral loads.The analysis was carried out by comparing the strength provided by steel plate shear wall system and simple beam-column steel frame system (without infill plate) with some aspect ratio variation (width per height). The material used for the infill plates was low yield strength (LYS) steel plate of 1.30 mm thick, while the column (vertical boundary element) used WF 400.200.8.12, and the beam (horizontal boundary element) used WF 350.175.7.11. The loading used a monotonic pushover loading of 2% drift (68.8 mm) for each specimen.The analysis result proved that the steel plate shear wall system (frame with infill plates) had significant strength advantage compared to the plateless frame system. The aspect ratio (L/h) on infill plates were also affects the strength of the entire system, where the greater the aspect ratio, the greater the strength. The strength value of the SPSW specimen at 2% drift loading on aspect ratio L/h = 1.00, 1.50, 2.00, 2.50 respectively was 614.95 kN, 634.88 kN, 646.69 kN, and 688.03 kN. Meanwhile, the strength increment percentage between steel plate shear wall systems compared to plateless frame systems in each aspect ratio was 21.67%, 32.39%, 42.48%, and 54.20%.
Co-Authors Achmad Basuki Ali Awaludin Aminullah, Akhmad Arianto, Niky Ashar Saputra Asman, Hasbi Bambang Suhendro Bambang Supriadi Bambang Supriyadi Endita Prima Ari Pratiwi Iman Satyarno Latif Budi Suparma Lautan Wijaya Nusantara, Johan Muda, Johanes B Muslikh Muslikh Niken Palaeowati Pasapan, Richard Marcelenus Purba, Ronny Rosediana, Risky Andayani Sari, Ardystia Maha Sari, Halima Irianti Puspita Syawal, Jus Tantisaputri, Intan Archita Tuasikal, Nur Risa Cahyana Umi Khoiroh, Umi Widiana, Niza Yobelita, Naomi Yuhasnita, Angeline