Analisis Perilaku Vertical Eccentrically Braced Frame Menggunakan Profil Tubular Ganda

Kaffah, Silmi (2021) Analisis Perilaku Vertical Eccentrically Braced Frame Menggunakan Profil Tubular Ganda. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem struktur Eccentrically Braced Frame (EBF) membatasi perilaku inelastis pada link balok yang terletak di antara dua bracing eksentrik. Ada dua jenis link yang umum digunakan, yaitu link Wide Flange (WF) dan tubular. Link berfungsi sebagai sekering daktail selama terjadinya beban gempa sehingga link akan mengalami rotasi inelastis sementara komponen lainnya tetap elastis. Link vertikal sangat memungkinkan untuk melakukan rehabilitasi bangunan tanpa adanya perubahan besar pada struktur utama karena saat struktur mengalami deformasi inelastis, balok akan tetap pada tempatnya tanpa bergeser secara vertikal. Link geser tubular memiliki daktilitas yang lebih baik dari link geser WF. Hal ini menunjukkan bahwa link tubular lebih stabil menahan beban siklik. Analisis histeresis menunjukkan bahwa semua kurva histeresis pada link geser ganda memiliki area yang lebih besar di bawah kurva untuk dibandingkan dengan link geser tunggal pada EBF. Dalam penelitian ini, dilakukan evaluasi perilaku sistem rangka bresing eksentrik vertikal menggunakan profil tubular ganda dengan variasi jarak antar link vertikal. Analisis beban siklik menggunakan Abaqus. Hasil penelitian menunjukkan bahwa semakin besar jarak antar link maka rasio daktilitas dan kemampuan struktur dalam menyerap gaya geser serta disipasi energi akan semakin besar. Spesimen yang digunakan adalah V-EBF 1, V-EBF 2, dan V-EBF 3 dengan jarak antar link vertikal 400 mm, 600 mm, dan 800 mm. V-EBF 3 memiliki rasio daktilitas 0.16% dan 0.8% lebih besar daripada dua spesimen lainnya. Gaya geser terbesar yang diserap struktur terjadi pada spesimen V-EBF 3 dengan selisih 0.03% dan 3.13% dengan spesimen V-EBF 2 dan V-EBF 1. Spesimen V-EBF 3 juga mampu mendisipasi energi terbesar, yaitu 0.08% di atas V-EBF 2 dan 3.7% di atas V-EBF1. =================================================================================================== The Eccentrically Braced Frame (EBF) system limits the inelastic behavior of the beam links between two eccentric bracings. There are two types of links that are commonly used, namely Wide Flange (WF) and tubular links. The link acts as a ductile fuse during earthquake loads so that the link will undergo inelastic rotation while the other components remain elastic. The vertical link is very possible to carry out the rehabilitation of the building without any major changes to the main structure which undergoes inelastic deformation, the beam will remain in place without shifting vertically. Tubular shear links have better ductility than WF shear links. This indicates that tubular links are more stable to withstand cyclic loads. Hysteresis analysis shows that all hysteresis curves on double shear links have a larger area under the curve to compare with single shear links on EBF. In this study, the behavior of the vertical eccentrically braced frame system was evaluated using a double tubular profile with varying distances between vertical links. Cyclic load analysis using Abaqus. The study showed that the greater distance between the links results the greater ductility ratio, the ability of the structure to absorb the shear forces, and the energy dissipation. The specimens used were V-EBF 1, V-EBF 2, and V-EBF 3 with a distance between links of 400 mm, 600 mm, and 800 mm. V-EBF 3 has a ductility ratio of 0.16% and 0.8% greater than the other two specimens. The largest base shear force absorbed by the structure occurred in the V-EBF 3 specimen with a difference of 0.03% and 3.13% with the V-EBF 2 and V-EBF 1 specimens. The V-EBF 3 specimen was also able to dissipate the largest energy, namely 0.08% above V-EBF 2 and 3.7% above V-EBF 1.

Item Type: Thesis (Masters)
Uncontrolled Keywords: rangka bresing eksentrik vertikal, tubular ganda, metode elemen hingga, beban gempa, vertical eccentrically braced frame, double tubular, finite element method, earthquake loads
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA347 Finite Element Method
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 > TH Building construction > TH1095 Earthquakes and building
Divisions: Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Civil Engineering > 22101-(S2) Master Thesis
Depositing User: Silmi Kaffah
Date Deposited: 22 Jul 2021 05:53
Last Modified: 22 Jul 2021 05:53
URI: https://repository.its.ac.id/id/eprint/84357

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