Calculation of structural bearing capacity according to Eurocodes with Swedish national annex (EKS 11). Recommendations of the Commission on Pile Research apply.

Centrum pile element
Centrum pile dimension, b 235mm
Centrum pile type Type 4
Centrum pile joint type CPG-K2
Centrum rock point CP-RP 235-25
Yield load of pile element, Fstuk 1554 kN
Nominal cover, c / production tolerance 25 / 10 mm
Concrete recipe S1 - Standard
Class of lifespan L100
Exposure classes of pile element XC2, XF1








Calculation conditions
Influence of pile installation
Reduction factors for material strengths
Concrete, μc
0,8
Compression reinforcement, μsc
0,8
Tension reinforcement, μst
0,9
Eccentricity on rock point
Øtip/10
Ultimate limit state, ULS
Long-term load percentage
80%
Calculate MRd at normal force, N =
0 kN
Serviceability limit state, SLS
Permitted crack width, wmax
0,40 mm
Exposure class(es), crack width
XC2
Calculate MRd at normal force, N =
0 kN


Soil strength
Cohesive soil
The deflection resistance of normally consolidated cohesive soil is determined according to the Swedish Commission on Pile research Report 96:1 supplement 2.
Mean undrained shear strength, cum
10 kPa
Conversion factor, η
0,95
cuk = η · cum
9,5 kPa
cud = 1/γcu · η · cum
6,33 kPa
Long-term load percentage, alt
80 %
 
Relative resistance modulus, k·d
Limit resistance, qy
Relative deflection at lim. res. yy/d
SLS
475 kPa
57 kPa
0,120 m/m
ULS
373 kPa
42 kPa
0,112 m/m


Calculation results ULS
Compression resistance
Pile section
Nc,Rd,pile
= kN
Pile joint section
Nc,Rd,pilejoint
= kN
Rock point*
Nc,Rd,rockpoint
= kN
Pile element
Nc,Rd
= kN
*Capacity of rock point is determined for standard concrete C50/60
Tension resistance
Pile section
Nt,Rd,pile
= kN
Pile joint section
Nt,Rd,pilejoint
= kN
Pile element
Nt,Rd
= kN
Moment capacity at N = 0
Pile section
MRd,pile
= kNm
Pile joint section
MRd,pilejoint
= kNm
Pile element
MRd
= kNm
Buckling length at Nc,Rd = kN
lcr
=


Calculation results SLS
Compression resistance
Pile section
Nc,Rd,pile
= kN
Pile joint section
Nc,Rd,pilejoint
= kN
Rock point*
Nc,Rd,rockpoint
= kN
Pile element
Nc,Rd
= kN
*Capacity of rock point is determined for standard concrete C50/60
Tension resistance
Pile section
Nt,Rd,pile
= kN
Pile joint section
Nt,Rd,pilejoint
= kN
Pile element
Nt,Rd
= kN
Moment capacity at N = 0
Pile section
MRd,pile
= kNm
Pile joint section
MRd,pilejoint
= kNm
Pile element
MRd
= kNm
Buckling length at Nc,Rd = kN
lcr
=


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The static structural bearing capacity of a selected pile element in selected calculation conditions is calculated. Be aware that important pile analyses, such as driveability and geotechnical bearing capacity, are not taken into account. These must be considered separately.