Analisis Numerik Sambungan Balok-Kolom Beton Pracetak Tipe Bolted Connection Terhadap Kekakuan Lateral Pada Struktur Bangunan Gedung Bertingkat

Haryaz, Raditya Umar (2026) Analisis Numerik Sambungan Balok-Kolom Beton Pracetak Tipe Bolted Connection Terhadap Kekakuan Lateral Pada Struktur Bangunan Gedung Bertingkat. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan sistem beton pracetak pada bangunan gedung bertingkat menuntut perencanaan sambungan yang mampu menjamin kinerja struktur terhadap beban lateral, khususnya beban gempa. Sambungan balok–kolom merupakan komponen penting yang berperan dalam mentransfer gaya serta memengaruhi kekakuan lateral struktur secara keseluruhan. Pada praktiknya, sambungan baut (bolted connection) umumnya tidak berperilaku kaku sempurna, melainkan memiliki karakteristik semi-kaku yang dapat memengaruhi respons global struktur. Penelitian ini bertujuan untuk menganalisis pengaruh kekakuan rotasi sambungan balok–kolom beton pracetak tipe bolted connection terhadap respons lateral struktur gedung bertingkat. Penelitian dilakukan melalui analisis numerik menggunakan perangkat lunak ETABS dengan membandingkan model struktur yang diasumsikan memiliki sambungan kaku (rigid) dan semi-kaku (semi-rigid). Nilai kekakuan rotasi sambungan ditentukan menggunakan metode secant stiffness berdasarkan yield point yang diperoleh dari kurva backbone hasil penelitian terdahulu, kemudian dievaluasi berdasarkan ketentuan ACI 374.1-05 sebelum diimplementasikan sebagai kekakuan pegas rotasi (rotational spring) pada elemen link di ETABS. Parameter yang dianalisis meliputi periode getar alami, gaya geser dasar (base shear), dan simpangan antar lantai (interstory drift). Hasil analisis menunjukkan bahwa penggunaan sambungan semi-kaku menyebabkan periode getar alami meningkat sekitar 9%, gaya geser dasar menurun sekitar 5–6%, serta simpangan antar lantai meningkat sekitar 9% dibandingkan model sambungan kaku. Meskipun demikian, seluruh nilai simpangan antar lantai masih berada di bawah batas yang dipersyaratkan oleh SNI 1726:2019 sehingga kinerja struktur tetap memenuhi persyaratan. Hasil penelitian menunjukkan bahwa karakteristik kekakuan rotasi sambungan perlu dipertimbangkan dalam analisis struktur gedung pracetak agar perilaku struktur terhadap beban gempa dapat direpresentasikan secara lebih realistis.
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The development of precast concrete systems in multi-story buildings requires beam–column connections capable of ensuring adequate structural performance under lateral loads, particularly seismic loads. Beam–column connections play a critical role in transferring internal forces and significantly influence the overall lateral stiffness of a structure. In practice, bolted connections generally exhibit semi-rigid behavior rather than perfectly rigid behavior, which affects the global structural response. This study aims to investigate the influence of the rotational stiffness of precast concrete beam–column bolted connections on the lateral response of multi-story buildings. The study was conducted through numerical analysis using ETABS by comparing structural models with rigid and semi-rigid beam–column connections. The rotational stiffness was determined using the secant stiffness method based on the yield point obtained from the backbone curve reported in a previous experimental study. The connection performance was first evaluated according to ACI 374.1-05, after which the calculated rotational stiffness was assigned as a rotational spring in the ETABS link element. The evaluated structural responses include the natural period, base shear, and interstory drift. The analysis results indicate that the semi-rigid connection model increases the natural period by approximately 9%, reduces the base shear by approximately 5–6%, and increases the interstory drift by approximately 9% compared with the rigid connection model. Nevertheless, all interstory drift values remain below the allowable limit specified in SNI 1726:2019, indicating that the structural performance still satisfies the code requirements. The findings demonstrate that the rotational stiffness of beam–column connections should be considered in the structural analysis of precast buildings to achieve a more realistic representation of seismic behavior.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Beton Pracetak, Kekakuan Lateral, Analisis Numerik, Finite Elemen Method, Sambungan Baut.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method T Technology > TA Engineering (General). Civil engineering (General) > TA683 Precast concrete construction. Prestressed concrete construction.
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis
Depositing User:	Raditya Umar Haryaz
Date Deposited:	28 Jul 2026 06:37
Last Modified:	28 Jul 2026 06:37
URI:	http://repository.its.ac.id/id/eprint/137874

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