11/22/2017
Slurry Wall (2)
Soldier Beams and Lagging (1) • Temporary and permanent excavation support systems. • Piles can be drilled in place or driven. • Lateral bracing can consist of: ▫ Tieback Anchors ▫ Deadman Anchors ▫ Internal Bracing • Does not cut off groundwater flow into the site.
• A trench is excavated to create a form for each wall ▫ The trench is kept full of slurry at all times • The slurry prevents the trench from collapsing • Provides outward pressure ▫ Balances the inward hydraulic forces ▫ Prevents water flow into the trench • Reinforcement is then lowered in and the trench is filled with concrete
Soldier Beams and Lagging (2)
Sheeting Piling (1)
Tieback and Deadman Anchors
Bracing
• Horizontal wire or rod, or a helical anchor used to reinforce retaining walls for stability
• Internal ▫ Support provided within the retaining wall • External ▫ Support provided externally • Cross ▫ Internal and external
• Typically applications: ▫ Trench shoring
▫ Culvert head and cut-off walls ▫ Freshwater shore protection ▫ Freshwater docks ▫ Loading ramps • Advantages of using steel sheet piling: ▫ High impact strength and
uniform properties Dynamic loading
experienced when sheet piles are driven into soil ▫ No site preparation required
Sheeting Piling (2)
Slurry Wall (1)
• Installation of Sheet Pile • Equipment ▫ Driving Hammers ▫ Jetting equipment • Placing and Driving
• Technique used to build reinforced-concrete walls • Areas of soft earth close to open water or with a high ground water table. • Typically used to build
▫ Guide structures carried ▫ Ensure correct alignment ▫ Jetting machine drives piles • Splicing ▫ If additional penetration needed • Inspection ▫ Check interlocking of joints • Pulling and Redriving ▫ Pile replaced is stability comprised during installation
diaphragm (water-blocking) walls surrounding tunnels and open cuts, and to lay foundations.
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