Elsantio, Raynard Vincent (2025) Comparison Of A 10-Story Steel Building In Taipei Zone Two With Lead Rubber Bearings And Fixed Base Supports Using Linear Response Spectrum & Nonlinear Time Series Methods With Modified Section Designs. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Base isolation systems are a technique used to enhance the structural performance of buildings during an earthquake by applying flexible elements at the base. This system significantly increases the natural damping period and structural damping, thereby reducing the level of damage to the structure during an earthquake. This study models the 幸运四叶 公寓楼 (Lucky Clover Apartment Tower), a 10 story steel building located in the Taipei Basin Zone 2, with a lead rubber bearing (LRB) base isolation system, and compares its performance to a fixed base structure. The LRB used in this study is a product from Bridgestone, model LT120G4-J, with a thickness of 248mm. Structural modelling was performed using nonlinear time series analysis and linear response spectrum analysis with the ETABS and SAP2000 software, in accordance with the ASCE 7-2016 Chapter 17 design criteria. This analysis produced outputs such as the building's natural period, inter-story displacement, and seismic base shear, which were then evaluated to assess the effectiveness and reliability of the LRB base isolation system. The results show that the average base shear for the structure with LRB is reduced by more than 50% compared to the fixed base structure. Additionally, the steel section of the structure can be reduced, potentially resulting in significant cost savings. The ground motion data used in the analysis were derived from Chi-Chi earthquake event in 1999, sourced from the NGAWest database.
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Sistem isolasi dasar adalah teknik yang digunakan untuk meningkatkan kinerja struktural terhadap gempa dengan menerapkan elemen fleksibel di dasar bangunan. Sistem ini secara signifikan meningkatkan periode redaman alami serta redaman struktur, yang dapat mengurangi tingkat kerusakan pada struktur selama gempa. Penelitian ini memodelkan 幸运四叶草公寓楼 (Lucky Clover Apartment Tower), sebuah gedung baja 10 lantai yang terletak di Zona dua Taipei, dengan sistem isolasi dasar menggunakan lead rubber bearing (LRB), dan membandingkan kinerjanya dengan struktur dengan fixed base. LRB yang digunakan dalam penelitian ini adalah produk dari Bridgestone, tipe LT120G4- J dengan ketebalan 248mm. Pemodelan struktur dianalisis menggunakan analisa nonlinear response history dan analisa linear response spectrum menggunakan perangkat lunak ETABS dan SAP2000, sesuai dengan kriteria desain ASCE 7-2016 Bab 17. Analisis ini menghasilkan output seperti periode alami struktur, simpangan antar lantai, dan gaya geser gempa yang kemudian dievaluasi untuk menilai keefektifan serta keandalan sistem isolasi dasar LRB. Hasil penelitian menunjukkan bahwa rata-rata base shear untuk struktur dengan LRB berkurang lebih dari 50% dibandingkan dengan struktur fixed base. Selain itu, penampang baja struktur dapat diperkecil, yang berpotensi menghemat biaya secara signifikan. Data gerakan tanah yang digunakan dalam analisis ini diambil dari kejadian gempa Chi-Chi pada tahun 1999, bersumber dari NGAWest.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | LRB, ASCE 7-2016, Linear Response Spectrum Analysis, Nonlinear Response History Analysis |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA169.6 Fault location (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design T Technology > TA Engineering (General). Civil engineering (General) > TA660.F7 Structural frames. T Technology > TH Building construction > TH1095 Earthquakes and building T Technology > TH Building construction > TH3000 Basements--Remodeling. |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22201-(S1) Undergraduate Thesis |
| Depositing User: | Raynard Vincent Elsantio |
| Date Deposited: | 03 Feb 2025 03:11 |
| Last Modified: | 03 Feb 2025 03:11 |
| URI: | http://repository.its.ac.id/id/eprint/117641 |
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