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The EXPERIMENTAL STUDY OF COLD-FORMED STEEL CLOSED BOX SECTION 32 MM X 31 MM X 0,3 MM BEAM ON 4-POINT FLEXURAL LOADING
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ABSTRAK
Penelitian ini mengevaluasi pengaruh panjang balok dan posisi lipatan terhadap kinerja lentur, lendutan dan pola kegagalan balok baja canai dingin boks tertutup berukuran 32 mm × 31 mm × 0,3 mm terhadap pengujian lentur empat titik. Sebanyak 18 spesimen diuji dengan metode tersebut dengan dua variasi panjang yaitu 500 mm dan 1100 mm serta memvariasikan posisi lipatan di sayap atas atau di sayap bawah, atau di badan samping. Hasil menunjukkan bahwa balok 500 mm mampu menerima beban vertikal lebih besar dibandingkan dengan 1100 mm, dengan penurunan tengah bentang yang lebih kecil dan menunjukkan rotasi yang relatif kecil. Sebaliknya pada balok 1100 mm penurunan tengah bentang dan rotasi yang terjadi lebih signifikan dibandingkan balok 500 mm. Keberadaan lipatan di sayap atas ataupun di sayap bawah meningkatkan besarnya kemampuan balok untuk menerima beban vertikal hingga 10% sampai 15% dibandingkan jika lipatan berada di badan samping. Pola kegagalan balok pendek didominasi oleh deformasi eksesif bagian atas balok akibat beban vertikal dan pada balok panjang hal yang sama terjadi pula. Deformasi eksesif tersebut terjadi di bawah lokasi beban vertikal yang berada dekat dengan perletakan rol.
Title: The EXPERIMENTAL STUDY OF COLD-FORMED STEEL CLOSED BOX SECTION 32 MM X 31 MM X 0,3 MM BEAM ON 4-POINT FLEXURAL LOADING
Description:
ABSTRAK
Penelitian ini mengevaluasi pengaruh panjang balok dan posisi lipatan terhadap kinerja lentur, lendutan dan pola kegagalan balok baja canai dingin boks tertutup berukuran 32 mm × 31 mm × 0,3 mm terhadap pengujian lentur empat titik.
Sebanyak 18 spesimen diuji dengan metode tersebut dengan dua variasi panjang yaitu 500 mm dan 1100 mm serta memvariasikan posisi lipatan di sayap atas atau di sayap bawah, atau di badan samping.
Hasil menunjukkan bahwa balok 500 mm mampu menerima beban vertikal lebih besar dibandingkan dengan 1100 mm, dengan penurunan tengah bentang yang lebih kecil dan menunjukkan rotasi yang relatif kecil.
Sebaliknya pada balok 1100 mm penurunan tengah bentang dan rotasi yang terjadi lebih signifikan dibandingkan balok 500 mm.
Keberadaan lipatan di sayap atas ataupun di sayap bawah meningkatkan besarnya kemampuan balok untuk menerima beban vertikal hingga 10% sampai 15% dibandingkan jika lipatan berada di badan samping.
Pola kegagalan balok pendek didominasi oleh deformasi eksesif bagian atas balok akibat beban vertikal dan pada balok panjang hal yang sama terjadi pula.
Deformasi eksesif tersebut terjadi di bawah lokasi beban vertikal yang berada dekat dengan perletakan rol.
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