suggest the proposed stabilizing technique including slope stabilizing piles. Of concern at that
time, was the piling construction technique. CFA (Continuous Flight Auger) piles will not assure
hindering the caving of the soft soil inside the bored pile. However, hammer driving will induce
vibrations that will cause local or general failure in the embankment body. On the one hand, using
full displacement piles will compress and consequently improve the soft soil behavior laterally,
while, displacement piles remain mainly driven piles. Thus, it was decided to use steel casing in
the driving to induce the displacement pile effect, and the driving process is performed using
vibratory drivers. Keeping the frequency of vibrations lower than the natural frequency of the soil
in which the piles are being driven, along with minimizing the driving amplitude have
successfully accomplished both tasks. These tasks are employing displacement piles, and prevent
caving of the soil in case of using CFA piles, while excluding the pile driving effects.
The embankment stabilization using piles is initially assessed using the simplified Janbu
method, followed by another assessment using the wedge method. Both solution techniques using
two slope stabilizing pile rows led to safety factors of more than 1.50, satisfying the requirements
of the Egyptian Code (2001). Therefore, in this study the effect of slope stabilizing piles in
increasing the safety factor of the embankment is exclusively studied in this research using the
finite element software Phase2.
suggest the proposed stabilizing technique including slope stabilizing piles. Of concern at thattime, was the piling construction technique. CFA (Continuous Flight Auger) piles will not assurehindering the caving of the soft soil inside the bored pile. However, hammer driving will inducevibrations that will cause local or general failure in the embankment body. On the one hand, usingfull displacement piles will compress and consequently improve the soft soil behavior laterally,while, displacement piles remain mainly driven piles. Thus, it was decided to use steel casing inthe driving to induce the displacement pile effect, and the driving process is performed usingvibratory drivers. Keeping the frequency of vibrations lower than the natural frequency of the soilin which the piles are being driven, along with minimizing the driving amplitude havesuccessfully accomplished both tasks. These tasks are employing displacement piles, and preventcaving of the soil in case of using CFA piles, while excluding the pile driving effects.The embankment stabilization using piles is initially assessed using the simplified Janbumethod, followed by another assessment using the wedge method. Both solution techniques usingtwo slope stabilizing pile rows led to safety factors of more than 1.50, satisfying the requirementsof the Egyptian Code (2001). Therefore, in this study the effect of slope stabilizing piles inincreasing the safety factor of the embankment is exclusively studied in this research using thefinite element software Phase2.
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