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Astonjadro
Published by Universitas Ibn Khaldun Bogor
ISSN : 23024240     EISSN : 26552086     DOI : http://dx.doi.org/10.32832/astonjadro
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
Astonjadro: Jurnal Rekayasa Sipil adalah jurnal ilmiah dibidang teknik sipil p-ISSN : 2302-4240 dan e-ISSN : 2655-2086. Jurnal Rekayasa Sipil Astonjadro diterbitkan untuk mengapresiasi dan memberikan informasi ilmiah bagi peneliti, dosen serta para profesional. termasuk dalamnya pengembangan model dan konsep penelitian yang mengacu secara berkesinambungan. Jurnal Astonjadro diterbitkan oleh Fakultas Teknik dan Sains Universitas Ibn Khaldun Bogor, terbit dua kali dalam satu tahun yaitu bulan Juni dan Desember.
Arjuna Subject : Teknik (semua kategori) - Teknik Sipil dan Struktur
Articles 507 Documents
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Seismic Performance Evaluation of Simple Reinforced Masonry Houses with Brick Walls: Experimental and Numerical Approaches Pasya, Namira Risza; Saputra, Ashar; Setiawan, Angga Fajar; Priyosulistyo, Henricus
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19253

Abstract

This study aims to evaluate the performance of brick houses against earthquakes through experimental and numerical approaches. The research objects include two single-story houses located at University of Gadjah Mada (UGM) and Turi, Sleman, Yogyakarta. Microtremor measurement was carried out using accelerometers to record building vibrations, which were then analyzed using Fast Fourier Transform (FFT) to obtain the natural frequency on site of the structure. Numerical modeling was carried out using finite element analysis to validate and asses the building’s frequency response to earthquake loads based on Service Level Earthquake (SLE), Design Basis Earthquake (DBE), and Maximum Considered Earthquake (MCE). The results of the study indicate that the modeling can be validated based on the natural frequency approach from field and numerical evaluate. The maximum displacement that occured at the SLE, DBE, and MCE levels exceeded the allowable limits, indicating that both houses are in an unsafe condition. The structural performance evaluation based on Federal Emergency Management Agency (FEMA 356) shows that the houses in UGM and Turi fall into the Collapse Prevention (CP) category, which mean that the building can no longer be used as houses on the verge of collapse. Although the maximum acceleration analysis of the houses indicates that the values are lower than the design peak ground acceleration (PGAM), structural failure may still occur. The results of this study are expected to provide insights into earthquake-resistant house design as well as recommendations for improving structural resistance to seismic load.
Comparative Analysis of Total Station and Mobile Base Station Accuracy in Determining Land Plot Volume (Case Study of Metland Land Plot) Abadiyah, Siti; Ramadhan, Fajar
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19264

Abstract

Measurement of land using extraterrestrial methods has developed quite rapidly due to the increasingly sophisticated measuring instruments used in measurements using these methods. The problem lies in the long baseline that causes the rover to take a long time to reach a fixed solution. Mobile Base Station can be used as an alternative solution to the problem because it can bring the base station closer to the measurement location, thus increasing measurement efficiency. The purpose of this study was to determine the accuracy of the aspects of coordinate differences and differences in land area and to determine the efficiency of land area measurement time using Mobile Base Station South Type Galaxy G1. The research method used is a comparative experiment with a quantitative approach. The samples selected were 89 residential land parcels in 1 (one) block. Sample measurements were carried out twice, namely using Mobile Base Station South Type Galaxy G1 with extraterrestrial methods and using Total Station as comparison data. The analysis used is the t test with a significance level (α) of 5%. The results showed that there was a significant difference between the coordinates of the land plot measured by the Mobile Base Station and the coordinates measured by the Total Station. The length of time needed to complete the work in this study with the Total Station tool is 585 minutes or or 9 hours 45 minutes and for the Mobile Base Station South tool it takes 476 minutes or 7 hours 56 minutes. And based on the results of the calculation of the time efficiency of these measurements that have been carried out combined with the time efficiency with the implementation of measurements during practical work is 37.24%.
Effect of Bolt Preload and Friction Coefficient on Slip Capacity and Yield in Steel Truss Bridge Connections Tologana, Ricky Nofrianto; Triwiyono, Andreas; Sulistiyo, Djoko
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19267

Abstract

This study analyzes the effect of bolt preload and friction coefficient on slip capacity and yield in steel truss bridge connections using the finite element method (FEM) through Abaqus software. Preload variations ranging from 0.2 to 0.9 and friction coefficients between 0.3 and 0.5 were applied to find the relationship between these factors. The results indicate that increasing preload and friction coefficient enhances slip capacity. Specifically, at a preload of 0.2 and friction coefficient of 0.3, slip occurred at 1549.07 kN, whereas at a preload of 0.9 and friction coefficient of 0.5, the slip capacity reached 11354.1 kN. However, excessive preload (>0.7 ) can lead to local failure due to stress concentration around the bolt hole. Validation using the AISC analytical method showed an average difference of only 1.6% with a maximum error of 5.28%, indicating a high level of accuracy in the FEM model. These findings provide recommendations for optimal connection design, suggesting a preload of 0.7 and a friction coefficient of 0.5 to enhance connection capacity while mitigating the risk of premature failure
Experimental Study of Screw Withdrawal in Acacia Cross-Laminated Timber (CLT) Ferry, Ferry; Awaludin, Ali; Irawati, Inggar Septhia
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19268

Abstract

This study examines the screw withdrawal strength in Acacia Cross-Laminated Timber (CLT) using screws of 5 mm diameter. CLT, typically made from softwoods, is gaining interest with hardwoods like Acacia for enhanced structural performance. The study evaluated screw withdrawal resistance across face, edge, and end grain orientations, following EN 1382 standards. The results showed that the face grain orientation exhibited the highest average withdrawal strength of 6.7 kN with a specific strength of 10.6 N/mm², while the edge grain had 6.5 kN and 10.3 N/mm². The end grain had the lowest strength with an average of 4.0 kN and 6.3 N/mm². Additionally, higher wood density was found to increase withdrawal strength, with heavier samples showing greater performance. These findings emphasize Acacia’s potential for structurally optimized CLT applications.
Typology and Transformation of Traditional Spatial Planning in Balinese Indigenous Villages: The Case of Blahbatuh Gunawan, I Gusti Ngurah Anom; Sari, Suzanna Ratih; Hasritanto, Bangun IR.; Sukawi , Sukawi
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.19272

Abstract

The spatial planning of traditional Balinese villages embodies a profound cultural and religious philosophy, ensuring a balance between sacred spaces, residential areas, and public domains. This study investigates the implementation of the Ulu Teben concept within the spatial structure of traditional villages in Blahbatuh, Bali, and its adaptation to modernization and economic shifts. The primary objective is to assess the extent to which Ulu Teben principles have been maintained and to identify key factors driving spatial transformations. A qualitative approach with a case study method is employed, integrating field observations, in-depth interviews with customary leaders and local communities, and document analysis. The research utilizes thematic and spatial analysis, supported by Geographic Information System (GIS)-based mapping to track spatial alterations. Findings indicate that while Ulu Teben remains a foundational principle in traditional village spatial planning, various adaptations have emerged due to population growth, economic pressures, and the expansion of the tourism sector. These changes have led to shifts in land use, including the conversion of sacred zones into residential and commercial areas. The degree of adaptation varies across different traditional villages, demonstrating flexibility in the application of traditional spatial structures. This study concludes that safeguarding traditional spatial planning necessitates a balanced strategy that integrates indigenous wisdom with modern urban planning policies. Strengthening customary regulations, leveraging digital mapping technologies, and promoting active community involvement are crucial measures in preserving the integrity of the Ulu Teben concept amid modernization challenges.
Study on Public Satisfaction With Using Public Facilities (Kebun Bunga Stadium Complex, Medan City) Adiniati, Fiska Mira; Hasibuan , Gina Cynthia Raphita; Anas , Muhammad Ridwan; Bangun , Emma Patricia; Mardianta , Anthoni Veery
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.20472

Abstract

Rapid urban growth demands the availability of comfortable, safe, and functional public open spaces as part of the quality of life for urban communities. The Kebun Bunga Stadium Complex in Medan is one such public space used for various social, sports, and recreational activities. This study uses the Customer Satisfaction Index (CSI) and Importance Performance Analysis (IPA) methods to evaluate the level of public satisfaction with the utilization of public facilities at the Kebun Bunga Stadium Complex. Primary data was collected through the distribution of questionnaires to 130 randomly selected respondents. The results of the importance analysis (MIS) identified the highest importance values, reflecting the most dominant customer expectations or perceptions, in terms of comfort with very high importance (up to 4.64), visitor activities receiving significant attention (up to 4.61), and sociability, which respondents rated as very important (up to 4.59). This confirms that comfort and visitor activities are the primary focus areas that need to be addressed and improved to meet visitor expectations. The analysis results showed a CSI value of 76.89%, which falls into the “satisfied” category. However, based on the IPA mapping, several important attributes were identified, such as inadequate gym facilities, cleanliness and comfort, as well as access to public transportation and dedicated pathways for people with disabilities, which are not yet adequate. These are the main focus areas because they have a high level of importance but low performance. The results of this study serve as the basis for recommendations for the government to improve the management and service of public facilities, thereby providing optimal comfort and satisfaction for the community.
Dialectics of Low Energy Design, Accessibility, and Materiality in Tropical Urban Crisis Young, Hepi Duchovny; Setyowati , Erni; Prianto, Eddy; Dwiyanto, Agung
ASTONJADRO Vol. 14 No. 4 (2025): ASTONJADRO
Publisher : Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/astonjadro.v14i4.21183

Abstract

This research examines the development of tropical buildings that address the challenges of climate change and population growth by integrating accessibility for all and designing buildings that consume less energy. This research aims to assess the social and technical conflicts between accessibility and energy efficiency, and to develop an evaluation framework based on optimization algorithms that finds a balance between the two. Testing phase change materials (PCMs), energy modelling using Energy Plus, and critical policy analysis employing Critical Discourse Analysis (CDA) are all integral components of the mixed-methods approach. The primary result is that PCMs can help maintain more stable temperatures without requiring significant insulation; however, issues with regulations and design persist. Standard designs may exceed energy limits, but generally make it more challenging to achieve places. Research indicates that to create inclusive and sustainable tropical architecture, it is essential to establish integrated criteria and employ a transdisciplinary approach.

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