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INDONESIA
Rekayasa Sipil
Published by Universitas Brawijaya
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Civil Engineering, Building, Construction & Architecture
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Articles 536 Documents
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Curved Damper as Structural Retrofitting Element to Improve the Performance of Steel Truss Bridge Ummati, Alfinna Mahya; Wirawan, Nugraha Bintang; Halim, Hendra
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.1

Abstract

The curved damper can control the structure movement by a physical approach to reduce the lateral deformation under the earthquake, which previously proved to be a significant improvement when applied on a moment-resisting frame in a laboratory scale experiment. With the same idea, a curved damper is considered a passive control to reduce the excessive deformation for a single span of a steel truss bridge, which is analyzed by finite element modeling to evaluate the role of the curved damper in a complex structure. The study of curved dampers applied in this typical bridge showed that mid-span deformation can be mitigated by up to 62% under an earthquake. Hence, a structure with a curved damper is recommended for application in high seismic locations.
The Effect of The Addition of Bagasse Ash on The Making of Paving Block Agustapraja, Hammam Rofiqi; Pramono, Djoko Heru; Wahab, Izudinshah Abd.
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.2

Abstract

Paving Concrete is a composite of building materials made from a mixture of Portland cement or adhesive, water, and aggregate with or without other additives, which do not reduce the quality of the Concrete. In the research, fc' K-175 kg/cm2 of bagasse ash was added with variations of 0%, 6%, 8%, and 12% bagasse ash; the weight is based on the weight of the cement. This study aimed to determine the compressive strength of Concrete obtained from a mixture of bagasse ash in K-175 kg/cm2. The concrete mix design refers to SNI-03-0691-1996. Test samples prepared for each additional percentage of bagasse ash were three samples in the form of cubes with a length of 20 cm, a height of 8 cm, and a width of 10 cm. The results showed a decrease in strength with each addition of bagasse ash. It is known that the average compressive strength of Concrete after 28 days is 176.66%. Kg/m2 and the lowest compressive strength were obtained by adding 12% ash from bagasse aged 28 days, which was 73.33 kg/m2.
Integration of Java Programming-Based Pert and Earned Value Management Methods Based on Residential Precast Case Study to Improve Project Cost Efficiency Citra, Zel; Wibowo, Paksi Dwiyanto; Malinda, Yosie; Pranoto, Rodliyan Yusuf; Pitaloka, Fanny
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.3

Abstract

The need for residential houses is still high for property and construction commodities. The availability of land and market prices for residential houses continue to increase yearly. Only 45.04% of Jakarta residents had a home ownership status in 2020. 2021 is the precast building mode. It is justified that precast construction structures can save 35% on construction costs and are 27.33% more reliable than ordinary concrete structures. The research examines the integration of the PERT method and earned value management (EVM) based on Java programming in residential precast case studies. The results of this study are that the implementation of the PERT method can increase the efficiency of project duration by 6%, and the implementation of the EVM method can increase project cost efficiency by 7% with the indicators Schedule Performance Index (SPI) = 1.01 (under schedule) and Cost Performance Index = 1, 07 (Under Budget)
Management Strategies for On-street Parking Facility at Gen. Sudirman Street Kuanino Kupang Pedo, Krisantus Satrio Wibowo; Pattiraja , Agustinus Haryanto
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.1

Abstract

Poor performance of on-street parking facilities at Gen. Sudirman Kuanino Street, Kupang, can disrupt traffic flow and cause various problems. The research method is to evaluate the performance of on-street parking facilities and their impact on road performance, transportation costs, and the environment. The results show that the parking index exceeds the parking space capacity, with the highest values of 150% (left) and 138% (right). This is due to the parking volume of building material store operational vehicles (pick-ups and trucks). The resulting impact is a decrease in road performance with a degree of saturation (DS) at 1.22. Hence, it affects transportation costs and vehicle exhaust emissions exceeding regulatory limits. The recommended structuring strategy is the application of rules to control the volume, space, and time of parking by prohibiting parking from building material store operational vehicles, requiring minimum availability of off-street parking spaces by every store, applying a progressive parking fee system, and planting green plants. If the structuring strategy is implemented, the highest parking index results are 84% (left) and 96% (right), and the road performance results increase from the DS value of 1.22 to 0.71.
Evaluation of Pile Cap Reinforcement Design Using Conventional and Finite Element with Strut and The Method Based on SNI 2847-2019 Fajri Yusmar; Isda, Raiyyan Rahmi
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.4

Abstract

The Strut and Tie Method (STM) is one effective method for predicting the ultimate strength, failure modes, and behavior of reinforced concrete pile caps. However, the use of the strut and tie method in pile cap design in Indonesia is not as popular as the use of conventional methods. This study aims to evaluate the reinforcement design of pile caps using conventional methods and the finite element method (FEM) approach, utilizing the strut and tie method specified in SNI 2847 2019. The analysis results show that the required area of longitudinal reinforcement in the conventional method does not meet the criteria when evaluated using the STM method. The deficiency in the longitudinal reinforcement area amounts to 40.13% compared to the design results obtained using the STM method. Meanwhile, the use of the FEM method results in a required reinforcement area that exceeds the required area for the STM method. The difference in reinforcement is even greater, reaching up to 7.85% for the FEM method.
Increasing The Bearing Capacity of Foundations on Sandy Soil with High Water Levels Using Mini-pile Moh. Ilham Farihi; Agata Iwan Candra; Dwifi Aprillia Karisma; Nur Addin Fatkunada; Malik Ibrahim; Bagas Naga Pratala Haryadi; Rahadi Reswara
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.2

Abstract

In the Kediri Regency area, it is planned to build a 3-story shophouse as one of the supporting facilities and the community’s economic needs. This area has sandy soil conditions and a high-water table. The purpose of this study was to calculate the carrying capacity of the soil in constructing a 3-story shophouse using the Terzaghi, Mayerhof, and Hansen methods. The condition of the soil with a relatively high groundwater table made the implementation of the footplate foundation less effective, so a modification of the foundation was made, which added three mini-piles measuring 0.4x0.4x1.5m, with a design load supported by the foundation of 100 t/m². Calculations with the Mayerhof and Hansen methods have nearly identical results but have not fulfilled the planned load. At a foundation depth of up to 3 m with an SF value of 3, for the Terzaghi method: 107.75 t/m2, the Mayerhof method: 92.51 t/m2, and the Hansen method: 94.68 t/m2. The results can be used as an alternative in constructing a 3-story shophouse with sandy soil conditions and high groundwater levels. This research can also be a reference for other regions facing similar problems.
Implementation of Construction Safety Plan in The Building Project Hadi, Patria Yoga Pratama; Soetjipto, Jojok Widodo; Trisiana, Anita
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.5

Abstract

Data on work accidents in the construction industry in Indonesia is still relatively high, so the government issued a Construction Safety Management System (CSMS) regulation in 2021. However, many middle to lower-class contractors still need help compiling it. Contractors still use job safety analysis as a substitute for the Construction Safety Plan (CSP) with minimal analysis. Therefore, it is necessary to research the preparation of CSP, which is integrated with the project technique method. The research method used is to describe CSP implementation in selected project cases. The study results show that contractors already have good resources and commitment to carrying out CSP but have limitations in understanding the techniques for preparing CSP documents accompanied by sound risk management analysis.
Performance Analysis of Shear Wall Joint Connection in Highrise Building Using Finite Element Sarasanty, Diah; Ali Wafa Baidowi, Ahmad
Rekayasa Sipil Vol. 18 No. 2 (2024): Rekayasa Sipil Vol. 18 No. 2
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.02.3

Abstract

Multi-story buildings have a risk of structural failure, especially at joint connections, including raft elements and shear walls, due to the interaction behavior of the shear joints. The problem raised in this research is how to analyze the performance of raft foundation shear wall structural connections in high-rise buildings. The researchers started by simulating the initial model using the element method to find out the detailed capabilities of the raft foundation and shear walls and obtain values that could measure the capabilities of the substructure used. The results of this research explain the results of the evaluation of connection performance, namely, the pile raft phase with fc' 35 MPa and the shear wall phase with fc' 50 MPa. From the analysis in this research, visualization from the ABAQUS program of the force conditions acting on the connection structure was obtained, namely compression damage of 0.0021 at an ultimate compressive stress of 43 MPa and 0.0006 at an ultimate compressive stress of 57.97 MPa. We also perform analytical calculations to determine the tensile and compressive strain values. In the future, it is hoped that it will be possible to make part of the reference the use of connections with similar models and sizes at project work stages with the same characteristics as a contribution to developing building structural safety requirements.
Seismic Risk Analysis of Government Buildings in the City of Tembilahan using FEMA P-58 Rofriantona; Ridwan; Djauhari, Zulfikar
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.6

Abstract

Research in estimating losses and harm experienced by structures in the high seismic zone had been conducted in previous studies. Yet there is limited study carried out in low-moderate seismic areas. Therefore, an accurate method for calculating losses incurred due to earthquake events is needed in assessing the performance of building structures. This study aims to analyze the seismic risk of government buildings in Indragiri Hilir Regency Riau Province according to FEMA P-58. Seismic risk analysis was carried out on four reinforced concrete buildings. The four buildings reviewed in this study were categorized as low-rise buildings (Immigration Office) and medium-rise buildings (Regent's Office, Puri Husada Hospital, and Rusunawa). The buildings’ location according to SNI 1726-2019 was categorized as soft soil class. The results showed that the Immigration Office, Regent's Office, Puri Husada Hospital and Rusunawa were in a safe state. This is drawn by the value of the collapse probability in the current search condition, which is lower than the value of the collapse probability in the upper bound condition. Regent's Office and Rusunawa were the most vulnerable buildings where the value of the mean loss probability was the highest, namely 23.2%.
Shear Reinforcement of Existing Reinforced Concrete Beam Using Deep Embedment Method Ilham Akbar; Ridwan; Muhammad Ikhsan
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.7

Abstract

The load capacity of old reinforced concrete structures must be increased to meet current standards. This might be due to increased load needs, inadequate shear provisions in the original design, material degradation, or rising demands for shear capacity related to flexural strengthening. This research demonstrates a method that effectively repairs RC beams using embedded steel bars. Loading history was reproduced in the form of cracking within the elastic range in 2000 x 150 x 200 mm beam. The beam was repaired and then reloaded to failure in the experimental test. The results show that the contribution of steel bars embedded in the core of the RC beam to the load capacity can be significant. The highest initial stiffness of the strengthened beam was 13,07 kN/mm, which was 69% higher than the control beam, while the maximum load of the strengthened beam was 43 kN with the deflection at 13,00 mm, 43% higher than the control beam. The cracks developed during the reinforced beam’s second load phase were identical to the first, and the shear capacity increased more than the control beam.

Page 46 of 54 | Total Record : 536

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