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CIE3032 지반공학및실험 lecture 03 lateral earth pressure 1

LECTURE 03

Lateral earth pressure

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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

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At-rest, Active, and Passive pressure

Active and passive pressures

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At-rest earth pressure

Assuming frictionless wall

Jacky’s equation (1944)

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Earth pressure at-rest for partially submerged soil

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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

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Rankine’s active earth pressure

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Rankine’s active earth pressure

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Rankine’s active earth pressure

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Rankine’s active earth pressure - Undrained

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Rankine’s passive earth pressure

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Rankine’s passive earth pressure

CIE3032 지반공학및실험 lecture 03 lateral earth pressure 14

Lateral earth pressure distribution against retaining walls

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Lateral earth pressure distribution against retaining walls

Partially submerged cohesionless soil supporting a surcharge: active

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Lateral earth pressure distribution against retaining walls

Partially submerged cohesionless soil supporting a surcharge: passive

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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