19 June 2001
SR-5: COMPLETE REPLACEMENT OF STEEL PILE
to heavy deterioration (greater than
of the cross
sectional area, or damage has occurred to a steel H-pile.
Description of Repairs:
Using Existing Pile Cap. Cut an opening in the concrete deck
adjacent to the damaged pile. Drive the new steel pile and cut to fit under the
existing pile cap. Pull the pile laterally into place (see Figure 8-5). Shim between
the pile and pile cap and secure the pile to the pile cap using 32-mm (1 -inch)
With New Pile Cap. Cut an opening in the concrete deck between
existing pile locations. Drive the new steel pile through the hole cut in the deck
and cut off below the top of the concrete deck (see Figure 8-5). Weld horizontal
reinforcing bars to the top of the steel replacement pile or provide suitable
reinforcing steel transitions with concrete piles, to ensure load transfer. Form the
pile capital under the deck and around the new pile, and fill the form and deck
space with concrete. Ensure that new and existing piles are electrically isolated
otherwise accelerated corrosion may be experienced with the new piles.
Application: This method restores the structural strength lost with the
deteriorated pile. The same corrosion can occur, however, with the new pile.
Concrete encasement or cathodic protection can be used to extend life
expectancy. Economics will govern approach.
Future Inspection Requirement: Same as for new steel or concrete pile