Construction of Cast-in-place Pile Inserted in the Bedrock for Railway Bridge Foundation Reinforcement

Abstract:

In the reinforcement for a bridge pier foundation, rotary drilling method and its construction order were taken according to the technical specification of mechanical vibration and the amount of open hole. And according to the engineering geology conditions, the key technology, wall-building by pressure grouting with two phase liquid, hole completion by drilling with cone-base roller bit and high quality, high viscosity slurry, were adopted to get good result.

Key words:reinforcement for railway bridge pier; bored cast-in-place pile; hard basic rock; pressure grouting with two phase liquid system; roller bit with cone base