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EVALUASI SEISMIK GEDUNG PERKULIAHAN 3 DAN 6 LANTAI EKSISTING DI KOTA YOGYAKARTA Septhia Irawati, Inggar; Heriawati, Isnaini; Setiawan, Angga Fajar
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.v18i1.10168

Abstract

The three-story reinforced concrete building as a college building was built in the city of Yogyakarta in 2011. The building was originally designed to have 6 floors using SNI 1726-2002 and SNI 2847-2002. With the development of construction standards in Indonesia, both regulations have been updated to SNI 1726-2019 and SNI 2847-2019. As a consequence of the updated regulations, re-evaluation of building structures against earthquake loads is important to do. This study aims to evaluate the performance of the existing building structure. The buildings are analyzed under two scenarios: the existing three-story condition and the planned six-story construction according to the Detailed Engineering Design (DED). The analysis employs a nonlinear static procedure based on ASCE 41-23 standards, with seismic load distribution derived from the Indonesian Earthquake Hazard Deaggregation Map. The seismic loading considers two levels of seismic hazard: BSE-1E and BSE-2E. Results indicate that both the three-story and six-story buildings fail to meet the performance criteria stipulated in ASCE 41-23. The evaluation results show that neither the three-story nor the six-story building achieves the Immediate Occupancy (IO) performance level under design earthquake BSE-1E, nor do they meet the Life Safety (LS) performance level under earthquake BSE-2E. Additionally, neither structure meets the maximum allowable horizontal displacement requirements.
A Cyclic Behavior of Multidirectional Box-Shaped Shearing Damper: Experimental Study Setiawan, Angga Fajar; Awaludin, Ali; Satyarno, Iman; Md Nor, Noorsuhada; Haroki, Yusuf; Darmawan, M. Fauzi; Purnomo, Sidiq; Sumartono, Ignatius Harry
Journal of the Civil Engineering Forum Vol. 11 No. 2 (May 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.14550

Abstract

This paper discusses an experimental study investigating the behavior of the multidirectional box-shaped shearing damper (MBSD) proposed for a bridge structures application. The MBSD consisted of a box-shaped steel plate hot coil (SPHC) material with an effective dimension of 100 x100 mm2 designed to dissipate earthquake excitation energy under combined resultant from longitudinal and transversal directions. The specimens varied with two different web slendernesses, i.e., 58.8 and 27.0. Furthermore, to investigate the different load direction effects, four different loading angles with respect to one of the web planes, i.e., 0°, 15°, 30°, and 45° to be implemented. The specimens were subjected to cyclic loading according to AISC/ANSI 341-22. In the experiment, the shear yield strength, ultimate state behavior, and energy dissipation achievement were evaluated. The result was that MBSD could achieve shear strength and sufficient energy dissipation under different angles of loading direction ranging from yielding to ultimate deformation state. The yielding and ultimate characteristics of MBSD were coincident with the ordinary shear panel damper. A stockier web resulted in a more stable stiffness after the yield point and less buckling of the web but also a slightly earlier strength degradation due to the earlier fracture damage to the welded joint. Finally, the MBSD device had visibility for application on bridge structure as a seismic device by considering appropriate strength and deformation capacity compatibility adjustment with the ultimate displacement limit of 0.11 rad drift angle. In addition, the recommendation for using a better elongation capacity steel material and less welding assembly will improve the behavior and seismic performance of the MBSD.
EVALUASI SEISMIK GEDUNG PERKULIAHAN 3 DAN 6 LANTAI EKSISTING DI KOTA YOGYAKARTA Septhia Irawati, Inggar; Heriawati, Isnaini; Setiawan, Angga Fajar
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.v18i1.10168

Abstract

The three-story reinforced concrete building as a college building was built in the city of Yogyakarta in 2011. The building was originally designed to have 6 floors using SNI 1726-2002 and SNI 2847-2002. With the development of construction standards in Indonesia, both regulations have been updated to SNI 1726-2019 and SNI 2847-2019. As a consequence of the updated regulations, re-evaluation of building structures against earthquake loads is important to do. This study aims to evaluate the performance of the existing building structure. The buildings are analyzed under two scenarios: the existing three-story condition and the planned six-story construction according to the Detailed Engineering Design (DED). The analysis employs a nonlinear static procedure based on ASCE 41-23 standards, with seismic load distribution derived from the Indonesian Earthquake Hazard Deaggregation Map. The seismic loading considers two levels of seismic hazard: BSE-1E and BSE-2E. Results indicate that both the three-story and six-story buildings fail to meet the performance criteria stipulated in ASCE 41-23. The evaluation results show that neither the three-story nor the six-story building achieves the Immediate Occupancy (IO) performance level under design earthquake BSE-1E, nor do they meet the Life Safety (LS) performance level under earthquake BSE-2E. Additionally, neither structure meets the maximum allowable horizontal displacement requirements.