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All Journal IPTEK The Journal of Engineering Jurnal Aplikasi Teknik Sipil
Kohar Yudoprasetyo
Department of Civil Infrastructure Engineering, Institut Teknologi Sepuluh Nopember
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering Mechanical Engineering

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Performance Evaluation of Fluid Viscous Dampers in a 13-Story Reinforced-Concrete Building on Soft Soil in Surabaya Ifarrel Rachmanda Hariyanto; Nur Ahmad Husin; Kohar Yudoprasetyo; Yosi Noviari Wibowo; Moh. Safii Mansur; Moh. Fadhlan Rosyidi
Jurnal Aplikasi Teknik Sipil Vol 24 No 3 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v24i3.10853

Abstract

Buildings on soft soil are prone to large lateral deformation, so drift control needs to be considered together with its structural and economic consequences. This study examines a 13-story reinforced-concrete building through three ETABS models: an SMRF with shear walls, an OMRF open frame, and an OMRF fitted with fluid viscous dampers (FVDs). Response-spectrum analysis followed SNI 1726:2019. The selected scheme used 14 linear FVDs, reducing maximum deformation from 442.02 mm to 315.62 mm and bringing the maximum interstory drift back within the adopted limit. Quantity take-offs showed reductions of 8.83%, 24.10%, 19.30%, and 42.08% in slab, beam, column, and pilecap reinforcement, while the number of piles fell by 45.09%. All connection demand-to-capacity ratios remained below 1.0, although tensile concrete breakout was critical at 0.97. Material cost rose from IDR 8.49 billion to IDR 38.44 billion because FVD procurement dominated the alternative.
Comparative Study of Piled Raft and Deep Foundation Systems for a 13-Storey Academic Building in Surabaya Ifarrel Hariyanto; Mohamad Khoiri; Muhammad Odi Ridho Illahi; Kohar Yudoprasetyo; Yosi Noviari Wibowo; Moh Safii Mansur; Moh Fadhlan Rosyidi
IPTEK The Journal of Engineering Vol. 12 No. 2 (2026)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j28075064.v12i2.10855

Abstract

Foundation selection for a multistorey building on soft ground is governed not only by pile capacity, but also by settlement, load sharing, construction constraints, and cost. This paper compares the original deep-foundation design for an academic building in Surabaya with two piled-raft alternatives. The building has 13 main floors, one roof level, and an overall height of 56 m. The original system comprises 251 driven piles, 0.60 m in diameter and 30 m long, connected by 1.20 m thick pile caps. Each piled-raft alternative uses a 1.00 m thick raft and 269 piles of the same diameter, but with a reduced length of 20 m and a spacing of 2.40 m. The alternatives differ only in pile type: bored or driven. Borehole BH-01 gives an average N-SPT value of 4.42, and the site is treated as Site Class SE. ETABS 21 was used to obtain the superstructure reactions, the Meyerhof method was applied to estimate axial pile capacity, and PLAXIS 2D was used to study soil-foundation deformation. The total vertical reaction is 17,232.02 tons, while the maximum pile reaction under gravity and earthquake loading is 163.92 tons. Allowable capacities are 173.87 tons for the bored pile and 189.48 tons for the driven pile. PLAXIS settlements are 37.5 mm and 36.7 mm for the two piled rafts, compared with 243.2 mm for the raft without piles. Within the reported cost scope, the driven-pile raft has the lowest estimate at IDR 7.79 billion and provides the most favourable overall result, although vibration, construction quality, and field verification remain important in the final selection.
Co-Authors Ifarrel Hariyanto Ifarrel Rachmanda Hariyanto Moh Fadhlan Rosyidi Moh Safii Mansur Moh. Fadhlan Rosyidi Moh. Safii Mansur Mohamad Khoiri Muhammad Odi Ridho Illahi Nur Ahmad Husin Yosi Noviari Wibowo