Studi Perilaku Dari Short Link, Intermediate Link Dan Long Link Pada Sistem Struktur Eccentrically Braced Frame (EBF)

Rafael, Jusuf Wilson Meyerd (2017) Studi Perilaku Dari Short Link, Intermediate Link Dan Long Link Pada Sistem Struktur Eccentrically Braced Frame (EBF). Masters thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Sistem struktur Eccentrically Braced Frame (EBF) merupakan sistem yang mensyaratkan perilaku inelastik hanya terjadi pada balok link selama pembebanan gempa sehingga link akan mengalami rotasi inelastik sedangkan komponen lainnya dari EBF tetap elastik. Terdapat tiga kriteria balok link yang dimungkinkan dalam sistem struktur EBF yaitu; short link, intermediate link dan long link yang ditentukan dari normalisasi panjang link dengan rasio antara kapasitas momen plastis (Mp) dan kapasitas geser plastis (Vp). Struktur portal baja EBF tipe Split K-Braces dengan tiga kriteria balok link dimodelkan dalam penelitian ini menggunakan perangkat lunak ABAQUS dengan pembebanan diberikan secara siklik melalui kontrol perpindahan. Web stiffener pada setiap model balok link didesain dengan jarak pengaku sesuai dengan ketentuan AISC 2010 (standar) dan dengan modifikasi web stiffener yaitu penambahan diagonal web stiffener. Hasil penelitian menunjukkan bahwa model portal EBF tipe Split K-Braces yang menggunakan short link lebih baik dan dianjurkan dalam penggunaannya pada struktur dibandingkan intermediate link maupun long link. Hal ini ditunjukkan dengan mekanisme keruntuhan pada link lebih dulu tercapai pada short link dibandingkan model yang lainnya. Penambahan diagonal web stiffener pada link dapat meningkatkan kapasitas dari link tetapi satu sisi dapat memberikan kekuatan lebih pada link sehingga menyebabkan link berperilaku seperti balok terutama pada long link. ================================================================================================================== The paper disccuses an analysis study on the design of Eccentrically Braced Frame (EBF) i.e. short link, intermediate link and long link. The analysis aimed at examining the influence of inelastic performance, particularly the effect of geometrical factors that occurred by its link and seismic hazard on the design performance of EBFs. The performance conditions are obtained from the link normalization to ratio capacity of plastic moment (Mp) and plastic shear (Vp). A numerical investigation was conducted on EBF portal system, Split KBraces under three links condition. Subsequently, the analysis is performed by using ABAQUS and the loading method is based on displacement control under the influence of siclic parameter. In fact, to allocate the link parameters, spaccing of web stiffener on each model is followed by using AISC-2010. It is also added a diagonal web stiffener in each link shceme. The results indicate that the short link model considered in this study have on a higher over strength value and used as a proposed model when compared to intermediate link and long link model. It is stated by the failure mechanism as well, the failure is well-occurred in the short link condition. In addition, the added of diagonal web stiffener is possibly increase the link capacity. However, it could affect the performance behavior of link that typically proceed as a beam especially for a long link model.

Item Type: Thesis (Masters)
Uncontrolled Keywords: perilaku link, short link, intermediate link, long link, eccentrically braced frame
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering)
Divisions: Faculty of Civil Engineering and Planning > Civil Engineering > 22101-(S2) Master Thesis
Depositing User: JUSUF WILSON MEYNERD RAFAEL
Date Deposited: 30 Mar 2017 01:55
Last Modified: 05 Mar 2019 08:38
URI: http://repository.its.ac.id/id/eprint/2470

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