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CIE3032 지반공학및실험 lecture 03 lateral earth pressure 1
LECTURE 03
Lateral earth pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 2
At-rest, Active, and Passive pressure
Ratio of horizontal stress to vertical stress
Static: earth pressure at rest
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 3
At-rest, Active, and Passive pressure
Active pressure
Passive pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 4
At-rest, Active, and Passive pressure
Active and passive pressures
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 5
At-rest earth pressure
Assuming frictionless wall
Jacky’s equation (1944)
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 6
Earth pressure at-rest for partially submerged soil
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 7
Rankine’s earth pressure
Plastic equilibrium in soil: every point in a soil mass in on the verge of failureRankine (1857) investigated stress conditions in soil at a state of plastic equilibriumRankine’s active pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 8
Rankine’s active earth pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 9
Rankine’s active earth pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 10
Rankine’s active earth pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 11
Rankine’s active earth pressure - Undrained
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 12
Rankine’s passive earth pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 13
Rankine’s passive earth pressure
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 14
Lateral earth pressure distribution against retaining walls
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 15
Lateral earth pressure distribution against retaining walls
Partially submerged cohesionless soil supporting a surcharge: active
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 16
Lateral earth pressure distribution against retaining walls
Partially submerged cohesionless soil supporting a surcharge: passive
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 17
Lateral earth pressure distribution against retaining walls
Cohesive soil: active
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 18
Lateral earth pressure distribution against retaining walls
Cohesive soil – considering tensile crack After tensile crack develops, no contact exists up to depth of zo
CIE3032 지반공학및실험 lecture 03 lateral earth pressure 19
Lateral earth pressure distribution against retaining walls
Cohesive soil – Undrained – passive