scholarly journals POST ELASTIC-PLASTIC LATERAL-TORSIONAL BUCKLING BEHAVIOR AND STRENGTH OF H-SHAPED STEEL BEAM-COLUMNS PERMITTED TO SWAY

1985 ◽  
Vol 351 (0) ◽  
pp. 84-93
Author(s):  
JUNICHI KIMURA ◽  
CHIAKI MATSUI ◽  
SHOSUKE MORINO
Keyword(s):  
Steel Beam ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Beam Columns ◽  
Elastic Plastic ◽  
Buckling Behavior

scholarly journals PERILAKU BALOK BAJA I BUILT-UP

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
Titin Sundari
Keyword(s):  
Steel Plate ◽  
Steel Beam ◽  
Live Load ◽  
Dead Load ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Concentrated Load ◽  
Buckling Behavior ◽  
Plate Elements ◽  
Bending Capacity

AbstrakBalok adalah komponen struktur lentur yang memikul beban gravitasi, beban gravitasi ini berupa beban mati danbeban hidup yang bekerja tegak lurus dengan sumbu longitudinal balok. Salah satu bentuk balok yang efisienadalah balok profil I yang dibentuk dengan pengelasan atau yang dikenal dengan sebutan balok baja I built-up. Dalam penelitian eksperimental ini, balok baja dibuat dengan memotong lembaran pelat baja menjadi elemenelemenpelat sayap dan pelat badan dengan menggunakan pengelasan sehingga membentuk suatu balok bajaprofil I (balok baja I built-up). Sedangkan konstruksi balok yang digunakan adalah konstruksi balok sederhana(simple beam) dengan beban terpusat di tengah bentang. Penelitian ini bertujuan menganalisis kapasitas lenturdan mengetahui perilaku tekuk balok baja I built-up. Hasil dari ekeperimen ini dibandingkan dengan perhitungansesuai SNI 03-1729-2002 dan validasi dengan menggunakan software ANSYS. Dari penelitian ini didapatkan kapasitas lentur beradasarkan eksperimen lebih tinggi dibanding dengan SNI 031729-2002danANSYS.Sedangkankeruntuhanyangterjadiadalahkeruntuhantekuktorsilateral.Katakunci:built-up,momenkapasitas,tekuktorsilateralAbstract Beam is a structural member that carries a dead load or live load that works perpendicular to its longitudinal axisis beam. One form of an efficient beam is a beam profile I which is formed by welding or known as I built-upbeam.In this experimental study, the steel beam is made by cutting the sheet of steel plate into wing plate elements andbody plate by using welding to form a steel profile I (steel beam I built-up). The construction of beam is used asimple beam with concentrated load in the middle of the span. This study aims to obtain bending capacity andknow the buckling behavior of I built-up steel beam. The result of this experiment is compared with thecalculation according to SNI 03-1729-2002 and validation using ANSYS software.From this research, the bending capacity based on experiments is higher than that of SNI 03-1729-2002 andANSYS. While the collapse that occurs is the collapse of lateral torsional buckling.Keywords : built-up, bending capacity, lateral torsional buckling

scholarly journals A comparative study of beam design curves against lateral torsional buckling using AISC, EC and SP

2019 ◽  
Vol 15 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Vera V Galishnikova ◽  
Tesfaldet H Gebre
Keyword(s):  
Steel Structures ◽  
Reduction Factor ◽  
Steel Beams ◽  
Steel Beam ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Vertical Loading ◽  
Beam Design ◽  
Overall Stability

Introduction. Structural stability is an essential part of design process for steel structures and checking the overall stability is very important for the determination of the optimum steel beams section. Lateral torsional buckling (LTB) normally associated with beams subject to vertical loading, buckling out of the plane of the applied loads and it is a primary consideration in the design of steel structures, consequently it may reduce the load currying capacity. Methods. There are several national codes to verify the steel beam against LTB. All specifications have different approach for the treatment of LTB and this paper is concentrated on three different methods: America Institute of Steel Construction (AISC), Eurocode (EC) and Russian Code (SP). The attention is focused to the methods of developing LTB curves and their characteristics. Results. AISC specification identifies three regimes of buckling depending on the unbraced length of the member ( Lb ). However, EC and SP utilize a reduction factor (χ LT ) to treat lateral torsional buckling problem. In general, flexural capacities according to AISC are higher than those of EC and SP for non-compact sections.

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