earth pr
TRANSCRIPT
![Page 1: Earth pr](https://reader036.vdocuments.net/reader036/viewer/2022062710/55a826911a28abfd6f8b486f/html5/thumbnails/1.jpg)
Lateral Earth Pressure
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Sheet pile wall
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Types of retaining walls
1. Gravity retaining walls
2. Cantilever retaining walls
3. Counter fort retaining walls.
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Gravity Wall
![Page 10: Earth pr](https://reader036.vdocuments.net/reader036/viewer/2022062710/55a826911a28abfd6f8b486f/html5/thumbnails/10.jpg)
Cantilever wall
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Earth Pressure Theories
Rankine Earth Pressure Theory
Coulomb Earth Pressure Theory
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Rankine’s Theory • Soil mass is semi-infinite, homogeneous, dry and
cohesionless
• Friction between the wall and soil is neglected
• Lateral pressure is limited to vertical walls
• Failure along an assumed failure plane defined by φ.
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Rankine’s Theory Lateral pressure varies linearly with depth and
the resultant pressure is located
one-third of the height (H) above the base of the wall
Resultant force is parallel to the backfill surface
The wall yields about the base sufficiently for the active pressure conditions to develop
![Page 19: Earth pr](https://reader036.vdocuments.net/reader036/viewer/2022062710/55a826911a28abfd6f8b486f/html5/thumbnails/19.jpg)
Effect of uniform surcharge on lateral pressure
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Submerged Backfill and Stratified Backfill
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Inclined Surcharge or Sloping Backfill
![Page 22: Earth pr](https://reader036.vdocuments.net/reader036/viewer/2022062710/55a826911a28abfd6f8b486f/html5/thumbnails/22.jpg)
Inclined Back of Wall
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Earth Pressure of Cohesive Soil
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Rebhann’s graphical method
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Fig: Culmann’s graphical method for active thrust
Culmann’s graphical method