Abstract:Testing conditions of three new-type CRG(concrete reinforced grouting) piles in a garden of Guangzhou City are introduced briefly. Combined with static loading test,low strain integrity testing and high strain dynamic testing piles,the bearing capacities of three testing piles are analyzed. The achieved results show that the new-type CRG piles can utilize comprehensively the high bearing capacity of rock on the bottom of piles and the high strength of the body of prefabricated pipe piles,so the bearing capacity of single pile can be improved. It is proven that the new-type CRG piles are suitable and practicable. The results also show that the bearing capacities of the new-type CRG piles are controlled by the strength of the material of pile bodies. In order to guarantee the high bearing capacity of the new-type CRG piles,the strength of piles bodies should be improved properly,especially the strength of shallow piles body. For the quality testing of the new-type CRG piles,low strain integrity testing on the integration testing aspect of piles body is considered,and the high strain dynamic testing piles on the bearing capacity testing aspect of CRG piles are adopted,if necessary,the static loading tests will be included for a few piles.