Application of Post-grouting on Pile End Technology in Existing Pile Foundation Usage

The key point is to control the differential settlement of new-building and existing pile foundations when using existing pile foundation in new bridge construction.With the specific requirements for the control of pile foundation deformation,post-grouting on pile end technology can be used to improve the stress performance of bored pile.Combined with a practical engineering case,the effects of post-grouting on pile end technology for improving of bearing capacity and reducing of settlement deformation are introduced in the paper.Then,the strengthening mechanism is put forward briefly.Finally,the construction plan and strengthening result are mentioned.