CD Tesis

pengaruh bentuk massa struktur terhadap perilaku dinamik

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he rapid growth of high-rise building construction in earthquake-prone regions such as Indonesia presents significant challenges in structural planning, particularly regarding increasingly complex and asymmetrical building forms. This study aims to examine the influence of structural mass configurations on the dynamic behavior of multi-story buildings located in high seismic risk zones. The main focus is on six types of asymmetrical mass configurations L, T, U, V, X, and Y with consistent building areas and floor counts.
The objectives of this study include analyzing the influence of mass shapes on natural vibration periods, evaluating mass participation in translational and rotational motion, assessing inter-story drifts as an indicator of structural stability, and identifying the most effective mass configuration for earthquake resistance. The findings are expected to serve as a reference for structural design decisions in earthquake-resistant buildings within active seismic zones.
The methodology applied is a numerical analysis using the response spectrum approach in SAP2000 software. The models consist of six asymmetrical building shapes, each with five stories, a total height of 25 meters, and a floor area of 252 m² per level. Earthquake load data were obtained from the official Indonesian response spectrum website (rsa.ciptakarya.pu.go.id), assuming the building is located in Pekanbaru with medium soil classification. The structures were modeled using steel (fy = 245 MPa) and concrete (fc’ = 25 MPa) materials, utilizing a medium moment-resisting steel frame system. Key parameters analyzed include natural periods, mass participation, inter-story drift, and the number of modes required to reach the minimum 90% mass participation threshold.
The analysis shows that structural mass configurations significantly affect a building’s dynamic response. L- and T-shaped models exhibited longer natural periods and required more vibration modes to meet the mass participation criteria. In contrast, X- and Y-shaped models performed better with shorter natural periods, quicker mass participation achievement, and inter-story drifts within the allowable limits of SNI 1726:2019. Therefore, the X and Y configurations are recommended as optimal structural mass shapes in terms of dynamic efficiency and seismic safety.
This study concludes that the shape of structural mass plays a vital role in a building’s earthquake resilience and can guide efficient and safe high-rise building design in Indonesia.
Keywords: Dynamic response, structural mass configuration, SAP2000, natural period, mass participation, earthquake load, multi-story building, SNI 1726:2019.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

2010241875

Penerbit

Pekanbaru : UNRI – PASCA – Magister Teknik Sipil., 2025

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

2010241875

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

Magister Teknik Sipil

Info Detail Spesifik

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Pernyataan Tanggungjawab

Rahmat

Versi lain/terkait

Lampiran Berkas

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