PENULANGAN LENTUR KOLOM BIAKSIAL Pertemuan 20 Matakuliah : S0084 / Teori dan Perancangan Struktur Beton Tahun : 2007 PENULANGAN LENTUR KOLOM BIAKSIAL Pertemuan 20
Learning Outcomes Mahasiswa akan dapat mendesign penulangan lentur kolom biaksial Bina Nusantara
Outline Materi • Diagram Ineraksi • Metode Bresler Bina Nusantara
KOLOM BIAXIAL Kolom yang mengalami Momen dalam dua arah yang tegak lurus ( Mx dan My) Bina Nusantara
KOLOM BIAXIAL Unaxial bending about y-axis Bina Nusantara
KOLOM BIAXIAL The biaxial bending moments Mx = P*ey My = P*ex Bina Nusantara
METODE PENDEKATAN Bina Nusantara
METODE PENDEKATAN P0 = Axial Load Strength under pure axial compression (corresponds to point C ) Mnx = Mny = 0 P0x = Axial Load Strength under uniaxial eccentricity, ey (corresponds to point B ) Mnx = Pney P0y = Axial Load Strength under uniaxial eccentricity, ex (corresponds to point A ) Mny = Pnex Bina Nusantara
METODE PENDEKATAN Design: Pu Muy, Mux Pu, Puex, Puey Bina Nusantara
METODE PENDEKATAN Pn = Nominal axial load strength at eccentricities, ex & ey Limited to cases when Bina Nusantara
Analysis Procedure: Reciprocal Load Method Bresler’s Formula: TAHAPAN PERENCANAAN 1) Calculate P0 2) Calculate P0y ( Pn for e = ex, ey = 0 ) 3)Calculate P0x ( Pn for ex= 0, e = ey ) 4) Calculate Pn (from Bresler’s Formula ) Analysis Procedure: Reciprocal Load Method Bresler’s Formula: Steps: Bina Nusantara
TAHAPAN PERENCANAAN Bina Nusantara