Pile Design and Construction Practice, Fifth edition

actions can also occur from transversely applied loads such as those on piles supporting bridge abutments caused by surcharge fr ...

or parameters derived from in-situ tests. They are shown in Table 4.6. As described below when Rckis obtained from static pile l ...

Table 4.2Partial factors for soil parameters (M) Soil parameter Symbol Set M1 M2 Angle of shearing resistancea 1.0 1.25 Effecti ...

structural actions and A2 to geotechnical actions. The R3 factors in the DA3 approach are all unity requiring the ground resista ...

Pile loading testsusing procedures described in Section 11.4.2 can be used directly to obtain design resistance values or to ver ...

Geometrical dataare concerned with the cross-sectional dimensions of piles. In the case of precast concrete and manufactured ste ...

as they are related to the effective overburden pressure (the total overburden pressure minus the pore water pressure), are only ...

Resistance of piles to compressive loads 153 Failure surface in shaft friction Failure surface in end bearing Figure 4.3Failure ...

soil swells at the time of drilling the hole, but it increases as concrete is placed in the shaft. Because of these constantly c ...

the gap is removed when excavating for the pile cap. The gap may be significant for relatively short piles with shallow capping ...

is calculated from the peak value of cu. To allow for the flexibility and slenderness ratio of the pile it is necessary to reduc ...

closed piles were 1160 and 1400 kN respectively. Evaluation of the ultimate shaft friction and base resistances showed that the ...

formation of a dragged-down soft clay or sand skin has not been studied. A gap has been observed around all flange and web surfa ...

borehole or test profile over the penetration depth of the pile. Rc cal minis calculated from equation 4.11 using the values of ...

length of the driving tube if an enlarged detachable shoe is used to close its base) becomes filled with concrete. The tube, whi ...

form a slurry with the clay as the drilling tools are lowered down or raised from the hole. Water can also soften the clay if it ...

Fleming and Sliwinski(4.12)reported no difference in the adhesion factor between bored piles drilled into clays in bentonite-fil ...

Piles for marine structures are sometimes installed by driving a steel tube to a limited penetration below sea bed, followed by ...

Bjerrum(4.15)has reported on the effects of time on the shaft friction of piles driven into soft clays. He observed that if a pi ...

4.3 Piles in coarse-grained soils 4.3.1 General The classic formulae for calculating the resistance of piles in coarse soils fol ...