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All Journal Civil Engineering Dimension
Jimmy Chandra
Petra Christian University
Civil Engineering, Building, Construction & Architecture

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Journal : civil engineering dimension

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Seismic Performance of Precast Concrete Special Moment Frames with Hybrid Connection System in Five and Ten Story Buildings Jimmy Chandra; Vito Nathaniel Lokito; Jonathan Aurelius Tambuna
Civil Engineering Dimension Vol. 25 No. 2 (2023): SEPTEMBER 2023
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.25.2.85-95

Abstract

Precast concrete has been widely implemented in various construction projects due to shorter construction duration and consistent quality. In a previous study, Solberg et al. (2008) conducted an experiment on hybrid beam-column connections with Damage Avoidance Design concept to improve the seismic performance of precast concrete special moment frames. The objective of this study is to further evaluate the seismic performance of precast concrete special moment frames with the hybrid beam-column connections in five and ten story buildings. The evaluation was done through non-linear dynamic time history analysis using OpenSees. The analysis results show that precast concrete frame buildings exhibit insignificant difference in maximum interstory drift ratios and roof displacements as compared to conventional concrete frame buildings. However, with significantly smaller residual displacements which indicates less structural damage, precast concrete frame buildings could be preferred in the long run as they require less structural repairs after a strong earthquake event.
Evaluation of Shear-Flexure Interaction Behavior of Reinforced Concrete Wall Jimmy Chandra; Gata Milla; Jonathan Aurelius Tambuna
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.26.1.11-20

Abstract

Reinforced concrete (RC) wall is a critical structural member that resists lateral loadings, such as earthquake and wind. RC wall having moderate height to length ratio, 1.50-2.50, has the altered shear-flexure interaction (SFI) behavior, so shear and flexural failure mechanisms occur almost concurrently. Therefore, an experimental study of a moderate RC wall was conducted as a comprehensive study of the wall’s coupled nonlinear shear-flexure behavior under cyclic loading. The experimental results show that the RC wall failed in flexure mechanism, indicated by crushing of the flexural compression zone, and followed by immediate shear failure, notified by the occurrence of web crushing. In addition to the experiment, an analytical model using SFI-MVLEM element in OpenSees software was performed to verify the experimental results. The analytical results show that the model is able to simulate reasonably well the coupled nonlinear shear-flexure behavior of the RC wall subjected to cyclic loading.
Experimental Study of Bond Strength of Embedded Steel Reinforcement in Vibration-Based 3D Printed Concrete Mortar Jimmy Chandra; Alvin Halim; Franky Budiman; Pamuda Pudjisuryadi; Antoni Antoni
Civil Engineering Dimension Vol. 26 No. 2 (2024): SEPTEMBER 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.26.2.130-137

Abstract

Many new construction techniques have been developed in recent years, one of them is Three-Dimensional Concrete Printing (3DCP). It offers many advantages such as reduced human error, minimum manpower usage, and shorter construction period. This technique, however, still needs to be studied further to ensure good quality of constructions. This experimental study aims to investigate the bond strength of embedded steel reinforcement in vibration-based 3DCP mortar. The parameters varied are reinforcement diameter and direction of printing. It is found that average bond stress decreases as reinforcement diameter increases. Furthermore, 3DCP specimens with bars placed parallel to the printing direction have relatively higher bond stresses as compared to the ones with bars placed perpendicularly. As compared to conventional cast specimens, 3DCP specimens have higher bond stresses which might be due to vibration-based 3DCP mortar. Moreover, building code formulas significantly underestimate the bond stresses of vibration-based 3DCP specimens tested in this study.
Experimental Investigation on Seismic Performance of Precast Column-Foundation Connection using Combined Anchor and Pocket System Jaka Propika; Pamuda Pudjisuryadi; Jimmy Chandra
Civil Engineering Dimension Vol. 28 No. 1 (2026): MARCH 2026
Publisher : Institute of Research and Community Outreach - Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/ced.28.1.69-82

Abstract

Connections between precast concrete elements play a crucial role in ensuring structural integrity and facilitating effective force transfer. Among various connection types, the column–foundation connection is the most critical component, as it is designed to resist the combined effects of axial load, bending moment, and shear force. In this study, the pocket connection was modified with anchored reinforcement (BPC) to improve seismic performance. An experimental program was conducted on three specimens: a monolithic cast-in-place connection (MC) as the control, a conventional pocket connection (PC), and the modified pocket connection (BPC). Each specimen was subjected to combined axial and cyclic loading to evaluate the seismic performance of the column–foundation connection. The results showed that the MC specimen demonstrated the best performance, while the PC specimen, although meeting the ACI 374.1-05 acceptance criteria, failed to achieve the required probable moment capacity. The BPC specimen demonstrated improvement in seismic performance compared to the PC and was considered suitable for use in precast structural systems designed for seismic area.
Co-Authors Alvin Halim Antoni Antoni Franky Budiman Gata Milla Jaka Propika Jonathan Aurelius Tambuna Pamuda Pudjisuryadi Vito Nathaniel Lokito