Bo=0.6m a=60° B=1.2m Figure Q2. The cross section of a deep under-reamed footing. (Note (i): You may assume in your ca
Posted: Sat May 21, 2022 1:15 pm
- Bo 0 6m A 60 B 1 2m Figure Q2 The Cross Section Of A Deep Under Reamed Footing Note I You May Assume In Your Ca 1 (18.53 KiB) Viewed 42 times
rests on a clay, assumed to be weightless, with an undrained shear
strength 𝜏𝑢 = 60 kPa. Estimate the maximum value of the vertical
load before failure of the footing occurs. Illustrate clearly the
active and passive zone for this problem together with directions
of major principal stresses in each zone. Draw corresponding Mohr
circles indicating the major principal stresses. What are the
main advantages of using deep under-reamed footings? In which type
of soils are under-reamed deep footings normally used? Provide a
brief explanation in your answer.
- Bo 0 6m A 60 B 1 2m Figure Q2 The Cross Section Of A Deep Under Reamed Footing Note I You May Assume In Your Ca 2 (29.83 KiB) Viewed 42 times
(Note (i): You may assume in your calculations that vertical load is applied at the base of the footing and resulting stresses are uniformly distributed over the base of the footing. Note (ii): It may be assumed without proof that the difference of average principal total stress between two uniform stress zones separated by a fan zone of angle is given by $2 - = 27,0, and that the rotation of the direction of major principal total stress is 6.)