R

Design base resistance R^d =

Total resistance is Rd = Rbd + Rsd = 1208 kN

Verification of compressive resistance Design values Vd = 1307 kN and Rd = 1208 kN

Degree of utilization

Design is unacceptable if degree of utilization is > 100%

Degree of utilization

Design is unacceptable if degree of utilization is > 100%

Design Approach 3

Actions and effects

Partial factors from set A1: yg = 1-35 and yq = 1.5

Design vertical action is Vd = Yg x (W^k + V^k) + Yq x Vq^ = 1307 kN

Material properties

Partial factors from set M2: y^ = 1-25 , yc = 1-25 , and Ycu = 1-4 ©

Design undrained strength of clay is cud =-= 32.1 kPa ycu

Design shearing resistance of sand is 9>d = tan

Design constant volume angle of shearing resistance of sand is 9Cv.d = min(cv.k, <Pd) = 30-2°©

Design effective cohesion of sand is c'd --- 0kPa yc

Resistance

Partial factors from set R3: Yb = 1-0 and Ys = 1-0 ©

Bearing capacity factor (Berezantzev): basic value Bk = 35-4 , slenderness correction at = 0-78 , giving Nq = Bkx at = 27-8 ©

Characteristic base resistance is:

YRd ax cudx As

Characteristic shaft resistance in clay Rsk =-= 192 kN

sk1 YRd

Earth pressure coefficient for sand Ks =-= 0.56

s 50

Shaft friction in sand 5 = 9cvd = 30.2° Equivalent beta factor p = Kstan(5) = 0.32

Average skin friction in sand is

Tav = P x CT'vk.av = 28-9kPa

©

Characteristic shaft resistance

Tavx As2

2 YRd

Totals

0 0

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