Second order analyses indicate end moments of bending

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Unformatted text preview: rigid frame (sway frame), (KL)xx=20,000 mm. Second-order analyses indicate end moments of bending about the xx-axis as: Mf(xx-top)≈ ± 150 kN.m(f) at the top, and Mf(xx-bott)≈ ±300 kN.m (f) at the bottom of the column. ● about the yy-axis shown, the beam-column is in a braced frame (non-sway frame) and (KL)yy=10,000 mm. Second-order analyses indicate end moments about the yy-axis of Mf(yy-top)≈ ± 50 kN.m(f) at the top, and Mf(yy-bott)≈ ± 100 kN.m(f) at the bottom. The steel is ASTM A992, Fy=345 MPa. For a single W460x177, the CISC Handbook (page 6-46) lists these values (please double-check before using): A= 22,600 mm2, Ixx= 910 x106 mm4, Iyy= 105 x106 mm4, rxx= 201 mm, ryy= 68.2 mm, Sxx= 3780 x103 mm3, Zxx= 4280 x103 mm3, Syy= 735 x103 mm3, Zyy= 1130 x103 mm3, J = 4410 x103 mm4 , Cw= 5440 x109 mm6 …etc… For a single S380x74, the CISC Handbook (page 6-62) lists these values (please double-check before using): A= 9,500 mm2, Ixx= 203 x106 mm4, Iyy= 6.49 x106 mm4, rxx= 146 mm, ryy= 26.1 mm, Sxx= 1060 x103 mm3, Zxx= 1270 x103 mm3, Syy= 90.8 x103 mm3, Zyy= 164 x103 mm3, J = 884 x103 mm4 , Cw= 217 x109 mm6 …etc… A=A1 + A2 + A3= 41,600 mm2 Figure 2: (page 3/6) CE 470: Final Exam (12 April 2010) –Structural Steel Design Question 2: Bea...
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This document was uploaded on 03/30/2014 for the course CE 470 at University of Saskatchewan- Management Area.

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