Two-way slab with four simply-supported edges Bending moments M - Deflections f - Shear forces V - Equivalent uniform reactions p Example 1: lx=4.0 m, ly=5.0 m, p=11.44 kN/m2, h=170 mm, C30/37 (E=32.80 GPa) → ε=5.00/4.00=1.25 → kx=0.709, ky=0.291, vx=vy=0.622, am=0.0689, ρxr=0.500, ρyr=0.500, υxr=0.300, υyr=0.250 → fm=0.0689· 11.44· 103N/m2· 4.04m4/(32.80· 109N/m2· 1.0m· 0.173m3)=1252· 10-6m=1.252 mm, px=0.709· 11.44=8.11 kN/m, py=0.291· 11.44=3.33 kN/m, Mx= 0.622· 8.11· 4.02/8=10.09 kNm/m, My=0.622· 3.33· 5.02/8=6.47 kNm/m, Vxr= Vyr =0.500· 11.44· 4.0=22.88 kN, p xr=0.300· 11.44· 4.0=13.73 kN/m, pyr =0.250· 11.44· 4.0=11.44 kN/m. Example 2: lx=5.0 m, ly=4.0 m, p=11.44 kN/m2, h=170 mm, C30/37 (E=32.80 GPa) → ε=4.00/5.00=0.80 → kx=0.291, ky=0.709, vx=vy=0.622, am=0.0282, ρxr=0.400, ρyr=0.400, υxr=0.200, υyr=0.240 → fm=0.0282· 11.44· 103N/m2· 5.04m4/(32.80· 109N/m2· 1.0m· 0.173m 3)=1251· 10-6m=1.251 mm, px=0.291· 11.44=3.33 kN/m, py=0.709· 11.44=8.11 kN/m, Mx= My=0.622· 3.33· 5.02/8=6.47 kNm/m, My=0.622· 8.11· 4.02/8=10.09 kNm/m, Vxr= Vyr =0.400· 11.44· 5.0=22.88 kN , pxr=0.200· 11.44· 5.0=11.44 kN/m, pyr =0.240· 11.44· 5.0=13.73 kN/m.
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