| Reinforced concrete drilled filling pile is the widely employed bridge foundation in Langfang city, by the statistics of bridge foundation now ,about 80% bridges have this foundation form. However, the construction quality is poor.Considering this condition, the whole construction technology of reinforced concrete drilled filling pile is analyzed in this paper, and the procedure that is liable to fail in construction is found out. Accordingly, sets of construction control method and construction failure treating measure are put forward. With this method employed, quality failures are extremely reduced.Inspection items of each stage stated in the specification are not perfect in pile inspection. Therefore, a new method-pile defect inspection using low strain pile gauge- is suggested in this paper, and a set of curve analysis method which have sound effect is obtained through a great deal of practices.
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