|
|
|
|
|
|
|
Interstate 78/ State Route 33 Interchange
Slope Stabilization Project
Pennsylvania Department of Transportation
Easton, Pennsylvania |
Back to Project List
|
|
|
 |
|
|
Jet Grouting |
|
Patented, reinforced jet grouted columns installed
within the slope wall intercept deep and shallow sliding failure
surfaces. |
|
|
Project Overview: |
|
Layne GeoConstruction designed and constructed a soil-cement column cut-off wall utilizing patented,
reinforced jet grouted columns to facilitate the construction of a new highway interchange between
Interstate 78 and State Route 33 in eastern Pennsylvania. Construction of the interchange required
excavation of deep cut sections through soil, and the need for special treatment to provide slope
stability was identified through the course of subsurface analyses of the site.
The jet grouted columns extend from the top of the bedrock surface to the finished slope surface
level. Owing to the dense nature of the subsurface materials found within the slope, the double-fluid
jet grouting technique was utilized. The use of the patented, reinforced jet grouted columns achieved
construction of the jet grouted columns and internal reinforcement, keyed into the bedrock,
simultaneously. The result is a monolithic reinforced column.
The project is in an area of carbonate rock geology, and the presence of open and soil-filled solution
features in the bedrock presented challenges for the jet grouting operations. Horizontal drains located
near the base of the slope were installed to relieve hydrostatic pressure against the cut-off walls.
|
|
|
Value of Work Performed: |
|
$1,000,000 |
|
Project Duration: |
|
6 months |
|
Project Completion Date: |
|
March 2001 |
|
Project Reference: |
General Contractor:
Allan A. Myers
Patrick Day
(610) 584-3422
|
Project Designer:
URS Greiner
John Meyers
(610) 337-3666
|
|
|
|
|
|
