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Yanisfa Septiarsilia
Adhi Tama Institute Of Technology
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences Transportation Other

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Seismic Performance Evaluation Of Building Structures Modified With Special Concentrically Braced Frames (SCBF) Septiarsilia, Yanisfa; Susanti, Eka; Fitriyah, Dita Kamarul; Dewi Pertiwi; Umbu Miron
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 11 No 1 (2026): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v11i1.1617

Abstract

The Concentrically Braced Frame (CBF) system utilizes diagonal steel bracing members to enhance structural stiffness and dissipate seismic energy, thereby reducing potential damage to primary structural elements. CBF systems are classified into Special Concentrically Braced Frames (SCBF) and Ordinary Concentrically Braced Frames (OCBF), which are applied in high and moderate-to-low seismic regions, respectively. This study evaluates the modification of an existing 13-story hotel building into an SCBF system in accordance with the latest Indonesian seismic design provisions. The research methodology includes a literature review on SCBF design principles and the most recent SNI standards, preliminary design, numerical modeling, and dynamic analysis using SAP2000. The structural behavior parameters evaluated in this study include mass participation, fundamental period (time period), and interstory drift. The results indicate that both the existing structure with a Dual System (SMRF and shear wall) and the SCBF-modified structure satisfy the minimum 90% mass participation requirement specified in SNI 1726:2019, with the SCBF system achieving this criterion using fewer vibration modes. However, the evaluation of the fundamental period shows that the existing structure remains within the allowable code limits, whereas the SCBF-modified structure exceeds the maximum permitted fundamental period, indicating increased structural flexibility and insufficient lateral stiffness. In terms of interstory drift performance, both structural systems comply with the drift limits specified in SNI 1726:2019; nevertheless, the Dual System demonstrates superior lateral deformation control compared to the SCBF system. Therefore, it can be concluded that the structural modification using the SCBF system in this study was not successful in replacing or outperforming the existing Dual System. Although the SCBF configuration meets certain code requirements, it does not provide adequate lateral stiffness nor improved seismic performance compared to the original structural system.
Perbandingan Kuat Tekan Beton dengan Subtitusi Fly Ash Ditinjau dari Air Laut dan Air Tawar pada Proses Curing Dewi Pertiwi; Dewi Kusumaningrum; Yanisfa Septiarsilia; Jaka Propika; Eka Susanti; Heri Istiono
Jurnal Teknik Sipil Vol 6, No 2 (2025)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jts.2025.v6i2.8511

Abstract

Curing plays a vital role in concrete production, as proper treatment is essential before conducting a compressive strength test to ensure optimal results. Concrete cured in seawater often exhibits different strength characteristics due to the salt content. This study examines the effects of curing with both seawater and freshwater on concrete containing fly ash. The research aims to compare the compressive strength of concrete with fly ash substitution under two different curing conditions. Using an experimental approach, the study incorporated 40% fly ash and 1% polycarboxylate admixture into the concrete mix to target a high compressive strength of K-500. Results indicate that concrete with fly ash cured in seawater achieved an average compressive strength of 807.40 kg/cm² at 28 days, while concrete cured in freshwater reached only 667.94 kg/cm².
Co-Authors Aniendhita Rizki Amalia Apriyanto, Arie Fauzi Arintha Indah Dwi Syafiarti Budi Suswanto Data Iranata Dewi Kusumaningrum Dewi Pertiwi dewi pertiwi Dita Kamarul Fitriyah Eka Susanti Eka Susanti Eka susanti Felicia Tria Nuciferani Hendra Wijayana Heri Istiono I Gusti Putu Raka Indra Komara Indra Komara, Indra Istiono, Heri Jaka Propika Jaka Propika Jenny Caroline Kartiko, Andi Susilo Katon Putra Baskara Kurnia Hadi Putra Kurnia Hadi Putra, Kurnia Hadi Laras Laila Lestari Mila Kusuma Wardani Prasetyo, Agus Edy Putra Tri Yudhatama Risky Murinda Sekartadji, Ratih Siti Choiriyah Siti Choiriyah Tavio, Tavio Theresia Maria CA Umbu Miron Wijayana, Hendra Yudhatama, Putra Tri Yuyun Tajunnisa