Analysis on the Reinforcement Strategies for Bridge Pile Foundation with Composite Bolt Piles

In this paper,by taking the tunnel on Line 14 of Beijing metro traversing under Fengbei bridge as an example,a finite element model for the project was developed based on FLAC3D software. Through the monitoring and analyzing the settlement data of the bridge pile foundation,the reinforcing strategies for the bridge pile foundation of Fengbei bridge using composite bolt piles were optimized. It was shown by the actual settlement data recorded in- situ that the optimized reinforcing strategies controlled the settlements of the bridge pile foundation effectively,which satisfied the controlled technical indexes of the settlement of the bridge pile foundation. The reinforcing strategies can be taken for reference by similar engineering projects.