APPLICATION OF EXPANSION METHOD TO REMOVE PILE HEAD OF BRIDGE PILE FOUNDATION IN CONSTRUCTION
The construction of bridge pile foundation breaking pile heads has always been a technical difficulty.During construction,the steel bars at the pile heads are often damaged,which affects the quality of the pile foundation.Moreover,the pile head breaking project is time-consuming and laborious.Taking the construction of breaking the pile head of a certain pile foundation on Gannan Avenue Expressway as an example,the static expansion method is used to break the pile head of the bridge cast-in-place pile.The use of this technology can effectively achieve micro horizontal cracks on the cutting surface of the pile head,which is conducive to the overall breaking of the pile head.The steel bars at the pile head are clean and undamaged,and there is no dust or noise during the construction process.It is green,environmentally friendly,and cost-effective,which can effectively save construction costs and improve construction efficiency.
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