Chapter
Jun 20, 2012
Application of Deep Dynamic Compaction to U.S. Route 44 Relocation Project
Publication: Geotechnical Earthquake Engineering and Soil Dynamics IV
Abstract
In order to reduce potential settlements and liquefaction susceptibility, two passes of deep dynamic compaction (DDC) were adopted to density the loose, saturated granular backfill between steel sheet pile walls in peat bogs at the relocated U.S. Route 44 in Carver, Massachusetts. Piezocone penetration tests (CPTu) were performed before and after DDC to verify compaction effects. The comparison of pre- and post-compaction CPTu results indicated that the strength and stiffness of the backfill were significantly improved after each pass of dynamic compaction. Under the design load, around 40 percent of the estimated settlements in the backfill could be reduced after one pass of DDC, and up to 84 percent after two passes. At the same time, the backfill was densified to the level of resisting potential liquefaction under the design earthquake motions.
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Copyright
© 2008 American Society of Civil Engineers.
History
Published online: Jun 20, 2012
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ASCE Technical Topics:
- Backfills
- Compaction (material)
- Construction engineering
- Construction management
- Construction methods
- Engineering materials (by type)
- Excavation
- Foundations
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Granular materials
- Ground motion
- Materials characterization
- Materials engineering
- Pile foundations
- Pile settlement
- Piles
- Project management
- Soil liquefaction
- Soil mechanics
- Soil properties
- Steel piles
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WPC, Inc., 2201 Rowland Avenue, Savannah, GA 31404. E-mail: [email protected]
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