塔吊基础计算(品茗英文版).docVIP

CALCULATION FOR PILE FOUNDATION OF TOWER CRANE Tower crane TC1 1. Parameter information Type of tower crane: FM2555K, self-weight (include the pressure) F1=635.70kN, maximum lifting loadF2=100.00kN Overturning moment of tower crane M=2945.91kN.m,lifting height of tower crane H=47.80m, Width of tower crane B=2m Strength of concrete: C30, steel grade: Ⅲ, length of pile cap Lc or width Bc=6.00m Diameter of pile or piles length d=0.40m Pile space a=5.80m, thickness of pile cap Hc=1.50m Embedded depth of foundation D=0.00m,stirrup space of pile cap S=200mm Thickness of protection layer: 50mm; 2. Calculation for vertical force and bending moment of pile caps top surface of the tower crane foundation Self-weight of tower crane(include pressure)F1=635.70kN Maximum lifting load of tower crane F2=100.00kN Vertical force acting upon the top surface of piles foundation F=1.2×(F1+F2)=882.84kN Overturning moment of tower crane M=1.4×2945.91=4124.27kN.m; 3. Calculation for the bending moment of rectangular pile cap Calculation for vertical force of the top of pile (Refer to《Technical Standard for construction pile》JGJ94-94 No 5.1.1) In which n──number of single pile,n=4； F──Design value of vertical force acting on the top surface of the pile cap，F=1.2×=882.84kN; G──Self-weight of pile cap, G=1.2×（25.0×Bc×Bc×Hc+20.0×Bc×Bc×D)=1620.00kN； Mx,My──Design value of bending moment of pile caps bottom surface(kN.m)； xi,yi──Space of single pile relatively to the direction of XY of the axis of pile caps center(m); Ni──Design value of vertical force of the single piles top(kN)。 Design value of the vertical force of single pile top according to the calculation: Maximum pressure: N=(882.84+1620.00)/4+4124.27?(4.80?1.414/2)/[2?(4.80?1.414/2)2]=1233.36Kn Withdrawal resistance calculation N=(882.84+1620.00)/4-4124.27?(4.80/2)/[4*(4.80/2)2]=196.1Kn0 Without uplift force! Calculation for the bending mom