Transcript
Pr o j ec t : L o c at i o n : Cl i en t : J o b Ti t l e
Mad e B y: Ch ec k ed B y: Dat e: J o b .No / Rev .
OUTRIGGER PAD DESIGN
REF.
1. CRANE OUTRIGGER PAD GEOMETRY: sHP = Rect. unitless unitless Shape of the Outrigger Pad Distance along X-direction x_dim = 750.00 mm Distance along Y-direction y_dim = 750.00 mm A_p = 5.63E+05 mm² Area of the Outrigger pad
Concrete
Mobile Crane Manual
0 1 . 1
2. LOADINGS: Ps = = IM = Pu =
L
1137.62 1137.62 1.40 1.20 1365.14 1365.14
1.10
kN unitless unitless unitless unitless kN
Concentrated load from the Outrigger" Load factor Impact Factor Ps+0.40Ps+0.20Ps, Factored load
PLAN
1137.62
pre-calculated assumption assumption
3. BASE PROPERTIES: Type = Concrete unitless Type of Base for the Pads Base Bearing Capacity 981.00 kN/m² b = Area required AR = 1.160 m² 4. PAD SUPPORT DESIGN & ANALYSIS: 4.1 MAT PROPERTIES: Consider Douglas Fir- Larch, Select Structural Type = Timber unitless unitless Mat Material Fb = 1500.00 Mpa Bending Stress Shearing Stress Fv = 170.00 Mpa . Modulus of Elasticity E = 1.60E+06 Mpa Standard thickness d= 150.00 mm Standard width b= 200.00 mm Dressed thickness ds = 137.50 mm Dressed width bs = 187.50 mm A = 2.66E+04 mm² Gross Section Area Section Modulus along X-axis Sxx = 8.06E+05 mm³ Moment of Inertia along X-axis Ixx = 8.05E+07 mm4 Section Modulus along Y-axis Syy = 6.20E+05 mm³ Moment of Inertia along Y-axis Iyy = 4.33E+07 mm4 Weight of mat per meter wt = 12.813 kg/m 4.2 CALCULATE THE FORCES CONSIDERED IN DESIGN: AR = 1.16 m² Ps / b, Area required Base Area provided Ap = 1.20 m² Actual Mats effective base Length Lr = 1.10 m Actual Mats effective base Width Wr = 1.10 m (Lr-x_dim)/2, Actual Mats cantilever length Lc = 0.73 m (Pu/Ar)+(Wt of Mat) Factored Pressure on the base qu = 1177.31 kN/m² quWrLr²/2, Factored Bending Moment Mu = 783.5 kNm quWr(Lr-ds), Factored Shear Force Vu = 1246.48 1246.48 kN Compressive force for Bearing Check Ru = 1365.14 1365.14 kN
pre-calculated
Timber Beam Concrete
NDS - 2005 ELEVATION Y ds
X bs
CROSS SECTION
1365.14
Timber Beam
4.3 CALCULATE THE ADJUSTED STRENGTH OF THE MATS: 1177.31 Adjustment Factors for Bending, Shear & Bearing: 1.10 Cd = 1.00 unitless unitless Load duration factor (Conservative Value) Cm = 1.00 unitless unitless Wet service factor 783.5 Ct = 1.00 unitless unitless Temperature factor CL = 1.00 unitless unitless Beam stability factor Cf = 1.00 unitless unitless Size factor 1246.48 Cfu = 1.00 unitless unitless Flat use factor Ci = 0.80 unitless unitless incising factor (0.80 Fb,Fv, 1.0 Fcp) Cr = 1.00 unitless unitless Repetitive member factor Cb = 0.75 unitless unitless Bearing Area Factor 0.73 FbCdCmCtClCfCfuCiCr,Adjusted Bending Stress Fb' = 1200.00 Mpa FvCdCmCiCt, Adjusted Shearing Stress Fv' = 136.00 Mpa Fcp' = 468.75 Mpa FcpCmCtCiCb, Adjusted Compressive Stress (perpendicular to the grain)
D:\Cris Files\old drive d\Calculation Files\Excel Sheet File\Out rigger Pad Design
NDS - 2005 C2.3.2
Table M4.3-1
By: CGB
Project: Location: Client: Job Title
KAFD Monorail System 8475 Riyadh, Kingdom of Saudi Arabia KAFD OUTRIGGER PAD DESIGN
Made By: Checked By: Date: Job.No/ Rev.
CGB 10-May-15 000
OUTRIGGER PAD DESIGN
REF.
4.4 CALCULATE THE STRENGTH OF THE PROFILE SECTION:
NDS - 2005
A. Ben di ng Momen t: Fb' = 1200.00 Mpa Sxx = 8.06E+05 mm³ M' = 966.75 kNm Mu = 783.50 kNm
Adjusted Bending Stress Section Modulus along X-axis Fb'xSxx, Adjusted Bending Moment Factored Bending Moment
B. Shear Force: V' > Vu Fv' = 136.00 Mpa A = 2.66E+04 mm² V' = 2412.90 kN Vu = 1246.48 kN
Adjusted Shearing Stress Gross Section Area 2/3Fv'A, Adjusted Shear Capacity parallel to the grain Factored Shear Force
C. Bearing Capacity: Fcp' = 468.75 Mpa Ab = 1.41E+05 mm² R' = 65917.97 kN Ru = 1365.14 kN
Adjusted Compressive Stress (perpendicular to the grain) Bearing Area of 1 unit of Timber Fcp'A, Adjusted Compressive (perpendicular to the grain) Compressive force for Bearing Check
M3.3-2
M3.4-3
M3.10-2
5. SUMMARY RESULTS: A. Ben di ng Momen t: M' > Mu Rem = OK unitless Remarks Utiliz = 0.81 unitless Utilization Ratio . Rem = Utiliz =
NDS - 2005 M3.3-1
. -
' OK unitless 0.52 unitless
Remarks Utilization Ratio
C. Bearing Force: R' > Ru Rem = OK unitless Utiliz = 0.02 unitless
Remarks Utilization Ratio
M3.10-1
D. Base Support Bearing Capacity: Base Bearing Capacity 981.00 kN/m² b = 948.02 kN/m² Actual Base Bearing Stress ba = Rem = OK unitless Remarks Utiliz = 0.97 unitless Utilization Ratio RESULT =
OK
unitless OVERALL RESULTS
D:\Cris Files\old drive d\Calculation Files\Excel Sheet File\Outrigger Pad Design
By: CGB
