Research on Large-diameter Cast-in-place Pile Post Grouting Technology for Beam Bridge in Karst Area
Taking the bored pile of a bridge project in deep karst area as the research object,the bearing characteristics of bored pile are analyzed by field static load test method.The results show that adopting post grouting technology can significantly improve the bearing capacity of single bored pile and reduce the settlement of pile foundation.The post grouting technology at the pile end is better than the gradual effect at the pile side.The use of post grouting technology at the pile end in karst area can significantly shorten the pile length,reduce the construction difficulty and construction cost.
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