Dynamic Vibration Absorber sebagai Peredam pada Fondasi Bangunan Tahan Gempa dalam Arah Tiga Dimensi

Pratama, Dhewangga (2019) Dynamic Vibration Absorber sebagai Peredam pada Fondasi Bangunan Tahan Gempa dalam Arah Tiga Dimensi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Laporan Tugas Akhir Dhewangga Pratama_02311440000060.pdf

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Abstract

Negara Kesatuan Republik Indonesia merupakan negara yang ada pada garis khatulistiwa yang dilewati oleh cincin api dunia. Cincin api inilah yang menyebabkan gempa vulkanik serta gempa tektonik pada negara Indonesia. Telah diketahui bahwa gempa merupakan bencana alam yang tidak dapat diprediksi saat kejadiannya, tetapi dapat dicegah kerusakan dan kerugian akibat gempa tersebut. Maka pada tugas akhir ini dibuatlah peredam fondasi bangunan berupa Dynamic Vibration Absorber (DVA) yang dapat mereduksi amplitudo akibat dari gempa. Permodelan sistem yang dilakukan berupa perlakuan pada sistem primer (fondasi) yang dipasang sistem sekunder (DVA dan Beam atau DVA saja). Input simpangan pada tugas akhir ini berupa Magnitudo Surface (Ms). Perhitungan dan simulasi dilakukan pada software tertentu. Perhitungan dan simulasi yang dilakukan adalah variasi input simpangan dan variasi nilai parameter DVA. Variasi input simpangan adalah gempa dengan magnitudo 6,4 SR, 5,7 SR, 5,0 SR. Sedangkan periode yang digunakan adalah 20 detik, 15 detik, 10 detik. Variasi nilai parameter DVA adalah DVA1 dengan massa 11,53 kg, konstanta redaman 4,4 Ns/m, dan kekakuan 168 N/m. DVA2 dengan massa 7,688 kg, konstanta redaman 2,934 Ns/m, dan kekakuan 112 N/m. DVA3 dengan massa 3,844 kg, konstanta redaman 1,467 Ns/m, dan kekakuan 56 N/m. Perubahan persentase resultan displacement pada sistem fondasi yang dipasang DVA dan Beam paling besar adalah 99,78%. Persentase ini menunjukkan bahwa pemasangan Beam menambah nilai amplitudo pada sistem. Perubahan persentase resultan displacement pada sistem fondasi yang dipasang DVA saja paling besar adalah 1167.76%. Persentase ini menunjukkan bahwa pemasangan DVA saja mereduksi nilai amplitudo pada sistem. ================================================================================================ The Unitary State of the Republic of Indonesia is a country that is on the equator which is passed by the ring of fire of the world. This ring of fire causes volcanic earthquakes and tectonic earthquakes in Indonesia. It is known that earthquakes are natural disasters that cannot be predicted when they occur, but can be prevented from damage and losses due to the earthquake. So in this final assignment a building damper is made in the form of Dynamic Vibration Absorber (DVA) which can reduce the amplitude of the earthquake. System modeling is carried out in the form of treatment on the primary system (foundation) which is installed by a secondary system (DVA and Beam or DVA only). The deviation input in this final project is in the form of a Magnitude Surface (Ms). Calculations and simulations are performed on certain software. The calculations and simulations carried out are variations in deviation inputs and variations in the values of DVA parameters. Variations in deviation input are earthquakes with magnitude 6.4 SR, 5.7 SR, 5.0 SR. While the period used is 20 seconds, 15 seconds, 10 seconds. Variations in DVA parameter values are DVA1 with a mass of 11.53 kg, attenuation constant 4.4 Ns / m, and stiffness 168 N / m. DVA2 with a mass of 7.688 kg, damping constant 2.934 Ns / m, and stiffness of 112 N / m. DVA3 with a mass of 3.844 kg, damping constant 1.467 Ns / m, and stiffness of 56 N / m. The percentage change resulting from the displacement in the foundation system installed by the largest DVA and Beam is 99.78%. This percentage indicates that the Beam installation adds the amplitude value to the system. The percentage change resulting from displacement in the foundation system installed by DVA alone was at most 1167.76%. This percentage indicates that the installation of DVA alone reduces the amplitude value in the system.

Item Type: Thesis (Undergraduate)
Additional Information: RSF 620.37 Pra d-1 2019
Uncontrolled Keywords: Gempa, Bangunan, Fondasi, DVA, Beam, Displacement
Subjects: Q Science > QA Mathematics > QA935 Vibration
T Technology > T Technology (General) > T57.62 Simulation
T Technology > TA Engineering (General). Civil engineering (General) > TA418.38 Materials--Fatigue.
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) > TA775 Foundations.
T Technology > TH Building construction
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Pratama Dhewangga
Date Deposited: 06 Apr 2022 02:54
Last Modified: 06 Apr 2022 02:54
URI: https://repository.its.ac.id/id/eprint/62254

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