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EVALUATION OF THE USE OF AUTOCLAVED AERATED CONCRETE (AAC) FLOOR PANELS ON THE STRUCTURAL LOADS OF A MARKET BUILDING firdaus kurniawan; antonius antonius; abdul rochim
Jurnal Kajian Ruang Vol. 6 No. 2 (2026): September
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v6i2.52432

Abstract

Penelitian ini mengevaluasi efektivitas penggunaan panel lantai Autoclaved Aerated Concrete (AAC) sebagai pengganti pelat beton konvensional pada Gedung Pasar Kedungwuni Blok I. Tujuan penelitian meliputi pemodelan struktur menggunakan ETABS, penentuan kapasitas beban maksimum panel AAC, serta analisis perubahan kinerja struktur setelah modifikasi sistem lantai. Analisis dilakukan sesuai SNI 1727:2020, SNI 1726:2019, dan SNI 2847:2019 melalui pemodelan 3D menggunakan ETABS, validasi self-weight, analisis respons spektrum, dan incremental loading pada elemen pelat dan balok.Hasil penelitian menunjukkan bahwa penggunaan panel AAC menurunkan total beban mati struktur sebesar 27% (dari 2.163,99 ton menjadi 1.707,61 ton). Kapasitas beban hidup juga meningkat dari 13,44 kN/m² pada struktur eksisting menjadi 14,88 kN/m² pada struktur dengan panel AAC, atau peningkatan 11%. Reduksi beban mati turut menurunkan gaya dalam, momen lentur, dan simpangan lantai, sehingga respons struktur terhadap pembebanan gravitasi maupun gempa menjadi lebih baik. Penelitian ini menyimpulkan bahwa panel lantai AAC memberikan peningkatan kinerja struktural sekaligus efisiensi berat bangunan, sehingga layak dipertimbangkan sebagai alternatif sistem lantai pada bangunan publik dengan beban tinggi seperti gedung pasar.
PERENCANAAN PERKUATAN STRUKTUR GEDUNG RSUD SURADADI AKIBAT PENAMBAHAN LANTAI DENGAN FIBER REINFORCED POLYMER Irkham Fauzi; antonius antonius; abdul rochim
Jurnal Kajian Ruang Vol. 6 No. 2 (2026): September
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v6i2.52433

Abstract

ABSTRAKPenelitian ini menganalisis kinerja struktur Gedung ICU–PICU–NICU RSUD Suradadi akibat penambahan lantai dari tiga menjadi lima lantai serta menentukan kebutuhan perkuatan menggunakan Carbon Fiber Reinforced Polymer (CFRP). Pemodelan dilakukan dengan ETABS v20.10 mengacu pada SNI 2847:2019, SNI 1727:2020, dan SNI 1726:2019. Hasil analisis menunjukkan peningkatan gaya aksial kolom sebesar 48%–52% akibat penambahan lantai, yang menyebabkan rasio kapasitas (demand-to-capacity ratio) kolom K1, K2, dan K3 melampaui 1,0 sehingga struktur eksisting tidak lagi memenuhi persyaratan kekuatan. Penerapan CFRP melalui mekanisme confinement terbukti meningkatkan kapasitas aksial kolom sebesar 23,5%–30,6% tergantung jumlah lapisan, sehingga rasio kapasitas turun menjadi kurang dari 1,0 dan elemen kembali ke kondisi aman. Evaluasi konfigurasi menunjukkan bahwa jumlah lapisan CFRP yang dibutuhkan berbeda antar tipe kolom, bergantung pada tingkat rasio kapasitas awal. Dengan demikian, perkuatan CFRP dinilai mampu mengatasi kegagalan elemen akibat penambahan lantai dan layak diterapkan untuk memastikan keamanan struktur, dengan catatan bahwa penelitian ini terbatas pada elemen kolom dan tidak menganalisis fondasi serta elemen struktur lainnya secara rinci.Kata Kunci: CFRP, penambahan lantai, ETABS, perkuatan, kolom ABSTRACTThis study analyzes the structural performance of the Suradadi Regional General Hospital (RSUD) ICU–PICU–NICU building following an expansion from three to five stories and determines the strengthening requirements using Carbon Fiber Reinforced Polymer (CFRP). Modeling was conducted using ETABS v20.10 in accordance with SNI 2847:2019, SNI 1727:2020, and SNI 1726:2019. Analysis results indicate a 48%–52% increase in column axial loads due to the additional stories; this caused the demand-to-capacity ratios of columns K1, K2, and K3 to exceed 1.0, meaning the existing structure no longer met strength requirements. The application of CFRP via a confinement mechanism was shown to increase column axial capacity by 23.5%–30.6%, depending on the number of layers; consequently, the demand-to-capacity ratio dropped below 1.0, restoring the elements to a safe condition. Configuration evaluations revealed that the required number of CFRP layers varied by column type, depending on the initial demand-to-capacity ratio. Thus, CFRP strengthening is considered capable of addressing element failure resulting from the additional stories and is a viable solution for ensuring structural safety, noting that this study was limited to column elements and did not analyze the foundation or other structural elements in detail.Keywords: CFRP, additional stories, ETABS, strengthening, column
ANALISIS STABILITAS DAN PENURUNAN TIMBUNAN MENGGUNAKAN EPS GEOFOAM DENGAN VARIASI KONFIGURASI JALAN TOL BAYUNG LENCIR–TEMPINO tommy diaz iskandar; abdul rochim; rifqi Brilyant
Jurnal Kajian Ruang Vol. 6 No. 2 (2026): September
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jkr.v6i2.52455

Abstract

Embankments constructed on soft soil commonly experience excessive settlement and low stability due to limited bearing capacity. The use of lightweight materials such as Expanded Polystyrene (EPS) Geofoam has been proposed to reduce vertical stress and improve embankment performance. This study aims to evaluate the effect of EPS Geofoam configuration on settlement and stability of embankments on soft soil. The analysis was conducted on Section 3 of the Bayung Lencir–Tempino Toll Road using the Finite Element Method with Plaxis 2D and the Mohr-Coulomb model. Three EPS configurations were analyzed: 0% (without EPS), 50%, and 100% of the embankment height. The simulation considered static and pseudostatic loading, as well as short-term and long-term consolidation behavior. The results indicate that EPS Geofoam significantly reduces settlement and increases the safety factor. The embankment without EPS shows a settlement of approximately 2.15 m with a safety factor of 1.4. The use of 50% EPS reduces settlement to about 1.4 m and increases the safety factor to 1.8, while 100% EPS results in the lowest settlement of approximately 1.06 m and the highest safety factor of 2.26. Therefore, the 100% EPS Geofoam configuration provides the most optimal performance in improving embankment stability and reducing settlement on soft soil.