점착력 고려시의 수평토압 산정
주동토압
Pa = active lateral earth pressure resultant per unit width of wall.
W = weight of soil wedge plus the relevant surcharge loads.
δ = friction angle between backfill material and back of wall.
ø = effective friction angle of soil.
αn = failure plane angle with respect to horizontal.
C = soil cohesion.
Ln = length of the failure plane.
수동토압
Pp = passive lateral earth pressure resultant per unit width of wall.
Wn = weight of soil wedge plus the relevant surcharge loads.
δ = friction angle between backfill material and back of wall.
ø = effective friction angle of soil.
αn = failure plane angle with respect to horizontal.
C = soil cohesion.
Ln = length of the failure plane.
출처 : CT TRENCHING AND SHORING MANUAL
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