In connection with common accidents in constructive pr ocess of steel bar & concrete prefabricated pile,it analyzes cause of its accide nts from aspects of split on top of the pile?broken body of the pile?slippery or translocation of the pile & gush of the pile and puts forward concrete handli ng methods & preventive measures so as to be references.

It analyses the reasons which causes the common quality problems including pile cracks,pile-top breakage,substandard sinking-pile design requirements and splitting joint,and brings forward the protecting measures and solving plan,so as to ensure the constructing quality and the safety of top structure.