Client requirement
Foundation strengthening, underpinning and correction addressed differential settlement and overall tilt.
Engineering challenge
Analysis considered water-induced disintegration of soft rock, sloping bearing strata and pile-tip support, requiring coordination of new piles with the existing foundation.
Technical approach
New anchor-reaction jacked grouted steel pipe piles provided partial underpinning, with pilot holes, pile-tip grouting and pile-head sealing. Pile cutting enabled controlled-settlement correction, followed by restoration of the cut piles' load-bearing capacity.
Project value
The project connected underpinning, tilt correction and restored pile capacity under complex bearing-stratum conditions.
