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All Journal Journal of Engineering and Technological Sciences Jurnal Teknik Sipil
Muslinang Moestopo
Kelompok Keahlian Rekayasa Struktur, Fakultas Teknik Sipil dan Lingkungan/ Pusat Rekayasa Industri-Laboratorium Mekanika Struktur Institut Teknologi Bandung Jl. Ganesa No. 10 Bandung, 40132.
Civil Engineering, Building, Construction & Architecture Engineering

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Behavior of Shear Link of WFSection with Diagonal Web Stiffener of Eccentrically Braced Frame (EBF) of Steel Structure Yurisman, Yurisman; Budiono, Bambang; Moestopo, Muslinang; Suarjana, Made
Journal of Engineering and Technological Sciences Vol 42, No 2 (2010)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.101 KB) | DOI: 10.5614/itbj.eng.sci.2010.42.2.1

Abstract

This paper presents results of numerical and experimental study of shear link behavior, utilizing diagonal stiffener on web of steel profile to increase shear link performance in an eccentric braced frame (EBF) of a steel structure system. The specimen is to examine the behavior of shear link by using diagonal stiffener on web part under static monotonic and cyclic load. The cyclic loading pattern conducted in the experiment is adjusted according to AISC loading standards 2005. Analysis was carried out using non-linear finite element method using MSC/NASTRAN software. Link was modeled as CQUAD shell element. Along the boundary of the loading area the nodal are constraint to produce only one direction loading. The length of the link in this analysis is 400mm of the steel profile of WF 200.100. Important parameters considered to effect significantly to the performance of shear link have been analyzed, namely flange and web thicknesses, thickness and length of web stiffener, thickness of diagonal stiffener and geometric of diagonal stiffener. The behavior of shear link with diagonal web stiffener was compared with the behavior of standard link designed based on AISC 2005 criteria. Analysis results show that diagonal web stiffener is capable to increase shear link performance in terms of stiffness, strength and energy dissipation in supporting lateral load. However, differences in displacement ductility’s between shear links with diagonal stiffener and shear links based on AISC standards have not shown to be significant. Analysis results also show thickness of diagonal stiffener and geometric model of stiffener to have a significant influence on the performance of shear links. To perform validation of the numerical study, the research is followed by experimental work conducted in Structural Mechanic Laboratory Center for Industrial Engineering ITB. The Structures and Mechanics Lab rotary PAU-ITB. The experiments were carried out using three test specimens with model and dimension identical to the model in the numerical study. Experimental testing apparently has shown results of the same behavior as predicted in the numerical study. However, when it is compared to the shape of the hysterical curve, a slight difference is apparent. This is due to the influence of stiffness of bolt joints and the supports which is difficult to model precisely in the numerical studies. 
Studi Eksperimental terhadap Parameter Daktilitas Struktur Baja Yurisman, Yurisman; Moestopo, Muslinang
Jurnal Teknik Sipil Vol 10, No 4 (2003)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.802 KB)

Abstract

Abstrak. Makalah ini menyajikan studi eksperimental terhadap daktilitas struktur baja berupa portal sederhana dengan tujuan meneliti parameter-parameter yang berpengaruh terhadap daktilitas struktur baja, dan melakukan validasi terhadap usulan formula daktilitas struktur yang sedang dikembangkan melalui studi numerik. Sebelum dilakukan pengujian di Laboratorium terlebih dahulu dilakukan penelusuran teori-teori serta data-data dari hasil-hasil penelitian sebelumnya. Selanjutnya dilakukan simulasi komputer dengan menggunakan paket program analisis nonlinier MSC/NASTRAN untuk mengetahui parameter-parameter yang berpengaruh secara signifikan terhadap daktilitas struktur portal baja sederhana. Hasil penelitian menunjukkan bahwa properti penampang (bf/2tf, h/bf), perbandingan tinggi kolom struktur dengan tinggi profil (H/h), serta tinggi kolom dengan lebar bentang struktur (H/L) merupakan parameter yang sangat berpengaruh terhadap nilai daktilitas. Validasi terhadap formula daktilitas yang diusulkan melalui studi numerik menunjukkan bahwa hasil numerik lebih bersifat konservatif, namun hasil analisis numerik dan eksperimen menunjukkan pola kurva daktilitas yang sama.Abstract. This paper presents experimental study of ductility parametric of steel structure. The purpose of this research to investigate the parametric influencing ductility of steel structure and to validate ductility formula obtained from numerical study. For this purpose, experimental data and modeling of specimen obtained from previous study and through simulation by nonlinear program MSC/NASTRAN. The result of investigation shows that: behavior of cross section (bf/2tf, h/bf), ratio height and width of structure (H/L) have great influence on the available ductility of steel structure. Validation of ductility formula show that the ductility the ductility value by experimental study is higher than numerical study, but the curve of ductility ratio shows the same behavior between experimental and numerical result.
Kajian Eksperimental Bresing Tahan Tekuk pada Bangunan Tahan Gempa di Indonesia Andarini, Rhonita Dea; Moestopo, Muslinang
Jurnal Teknik Sipil Vol 20, No 3 (2013)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (561.584 KB)

Abstract

Abstrak. Sistem rangka bresing tahan tekuk merupakan pengembangan dari sistem rangka bresing konsentrik dengan bresing tahan tekuk sebagai elemen utama penyerap energi gempa yang direncanakan leleh pada seluruh inti bajanya. Kajian eksperimental dilakukan terhadap tiga spesimen bresing dengan variasi ukuran diameter pipa pengekang (pipa PVC) dan mortar. Pembebanan siklik secara kuasi-statik dengan kontrol perpindahan dilakukan terhadap ketiga spesimen bresing hingga mencapai keruntuhan. Kinerja yang paling baik dihasilkan oleh bresing berdiameter 216 mm dalam hal kekuatan, kurva histeresis dan kurva backbone. Beberapa kegagalan diamati pada  spesimen bresing tahan tekuk dalam hal perilaku leleh pada daerah peralihan inti bresing yang tidak terkontrol dan keterbatasan kemampuan sistem penahan tekuk. Abstract. Buckling-restrained brace frame is developed from concentrically-braced frame. Buckling restrained brace is the major seismic energy dissipating element that expected to yield in its entire steel core. Experimental work was carried out on three brace specimens with PVC pipe and mortar diameter variations. Quasi-static loading with displacement control was applied to each brace until its failure. The 216-mm diameter brace shows the best performance on its strength, hysteretic curve and backbone curve. Several failures are observed from specimens on uncontrolled-steel-core-yielding behavior and limited buckling-restrained mechanism ability.
Kajian Numerik Terhadap Kinerja Link Geser dengan Pengaku Diagonal pada Struktur Rangka Baja Berpenopang Eksentrik (EBF) Yurisman, Yurisman; Budiono, Bambang; Moestopo, Muslinang; Suarjana, Made
Jurnal Teknik Sipil Vol 17, No 1 (2010)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (929.264 KB)

Abstract

Abstrak. Makalah ini menyajikan hasil studi numerik yang meneliti perilaku link geser dengan menggunakan pengaku diagonal pada bagian badan untuk meningkatkan kinerjanya, pada sistem struktur baja berpengaku eksentrik (EBF). Penelitian ini bertujuan untuk meneliti perilaku link geser dengan menggunakan pengaku diagonal pada bagian badan dibawah pembebanan statik monotonik dan siklik dengan kontrol perpindahan, riwayat pembebanan yang diberikan dalam pengujian ini sesuai dengan standar pembebanan AISC 2005. Analisis dilakukan dengan pendekatan elemen hingga Non-Linier dengan menggunakan perangkat lunak komputer MSC/NASTRAN. Link dimodelkan sebagai elemen shell yang ditumpu pada kedua ujungnya sedangkan beberapa nodal pada posisi pembebanan diperbolehkan untuk bertranslasi dalam satu arah saja (sumbu-y).. Beberapa parameter penting yang dianggap berpengaruh secara signifikan terhadap kinerja link geser telah dianalisa mencakup: tebal sayap, tebal badan, tebal dan jarak pengaku badan, tebal pengaku diagonal dan geometrik pengaku diagonal. Perilaku link geser dengan pengaku diagonal badan dibandingkan dengan perilaku link standar yang direncanakan sesuai dengan ketentuan AISC 2005. Hasil analisis menunjukkan bahwa pengaku diagonal badan dapat meningkatkan kinerja link geser dalam hal: kekuatan kekakuan dan dissipasi energi dalam menahan beban lateral. Namun, perbedaan nilai daktilitas antara link geser dengan pengaku diagonal badan dan link geser yang direncanakan sesuai standar AISC tidak begitu signifikan. Hasil analisis juga menunjukkan bahwa ketebalan pengaku diagonal dan model geometrik pengaku tersebut berpengaruh secara signifikan terhadap kinerja link geser. Abstract. This paper presents a numerical study to investigate the behaviour of shear link in case of enhancement of the shear link performance of Eccentrically Braced Frames (EBF) of steel structures by using diagonal web stiffenner. This research aims to investigate the behaviour of shear link with diagonal stiffenner under monotonic and cyclic of loading with displacement control, the loading hystory is applied to the model of link accordance with standard of AISC 2005. Non-Linier Finite Element Method is applied using the computer software of MSC/NASTRAN. Link is modeled as shell element and fixed at its both ends except for degree of freedom of the vertical displacement (y-direction) at the one end where the load is applied. Several important parameters of shear link has ben investigated: the thickness of flange, web and web stiffener, the space of web stiffner, the thickness of diagonal web stiffner and its geometric. The behaviour of shear link with diagonal  web stiffener is compared to the behaviour of the link designed in accordance with the AISC 2005 Standard Code of Practice. The results of the analysis show that the diagonal web stiffener increases the performance of the shear link in terms of strength, stiffness, energy dissipation to resist lateral load. However, the difference between the ductilities of the link with diagonal web stiffenner and standard link of AISC Code is not significant. Parameters which are significantly influencing the performance of the shear link are the thickness of diagonal web stiffener and its geometry.
Kajian Eksperimental Peningkatan Kinerja Link Geser pada Sistem Rangka Baja Berpengaku Eksentrik Moestopo, Muslinang; Panjaitan, M. Arief Rahman
Jurnal Teknik Sipil Vol 19, No 2 (2012)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1186.375 KB)

Abstract

Abstrak. Link geser pada sistem rangka baja berpengaku eksentrik (SRBE) merupakan elemen utama penyerap energi gempa yang direncanakan mengalami leleh pada seluruh pelat badannya. Kinerja link geser dengan sambungan baut yang berkurang akibat terjadinya kegagalan pada pelat sayap, diperbaiki dengan dua cara: (1) memperlebar pelat sayap pada bagian ujung link, dan (2) meningkatkan mutu pelat sayap. Kajian eksperimental dilakukan terhadap tiga buah link geser yaitu link bench-mark, link dengan pelebaran sayap, dan link dengan peningkatan mutu pelat sayap. Pembebanan siklik secara kuasi-statik dengan kontrol perpindahan dilakukan terhadap ketiga spesimen link hingga mencapai keruntuhan. Kurva histeretik yang dihasilkan menunjukkan peningkatan kinerja yang signifikan pada kedua upaya perbaikan, meliputi: kekuatan, daktilitas, dan disipasi energi.Abstract. Shear link of the eccentrically braced steel frames is the major seismic energy dissipating element which is expected to yield in its entire web. The decreasing performance of bolt-connected shear link due to failure of its flange, is improved by two methods: (1) widening the flange at link ends, and (2) increase the grade of flange. Experimental work was carried out on bench-mark link, link with wing plate, and link with flange of higher grade. Series of quasi-static cyclic loading with displacement control were applied to each link until its failure. Hysteretic curve shows increasing performance by both improvement methods, which includes: strength, ductility, and energy dissipation.
Co-Authors Arief Panjaitan Bambang Budiono Bambang Budiono Made Suarjana Made Suarjana Rhonita Dea Andarini, Rhonita Dea Yurisman Yurisman Yurisman Yurisman