The interaction mechanics among the endsuspended
pile, rock shoulder and footlock anchor should be
studied. Hence, the calculation methods of preloaded axial force of the footlock anchor are proposed based on the positions of endsuspended pile at the bottom of potential sliding surface of rock
slope. When the endsuspended pile is located below the
potential sliding surface, the preloaded axial force of footlock anchor is equal to the passive zone combined force minus rock
shoulder reaction force when the rock foundation pit is not excavated. When the
endsuspended pile is above the potential sliding
surface, the preloading axial force of footlock anchor
is equal to the passive zone combined force plus the thrust of endsuspended pile when the rock foundation pit is not excavated. And
the calculation formulas of the preloaded axial force of footlock anchor under two conditions are given. Finally, the results are
verified by the finite element method. The results show that the calculation
results of the preloaded axial force of footlock
anchor according to the calculation methods are basically rational.
CHEN Cheng
,
YANG Honglin
. Study on Calculation Method of Preloaded Axial Force
of Footlock Anchor in Support System of Soil and
Rock Dualistic Foundation Pit EndSuspended Pile[J]. Tunnel Construction, 2020
, 40(10)
: 1441
-1447
.
DOI: 10.3973/j.issn.2096-4498.2020.10.007
