In order to study the development and application of the strength composite piles and the prob-lems faced in the development process in recent years.In the paper,firstly,the development process of the strength composite piles is briefly described at home and abroad.And then,the four aspects of bearing per-formance,failure mode,interface characteristics and engineering application of the strength composite piles are discussed.It is concluded that the strength composite piles have been widely used in the pile foundation engineering in soft soil area.The composite piles present a double-layer load transfer mode,which show the characteristics of friction pile.The bearing performance of the pile body is better than that of a single pile type,and there is an optimal core pile length and area replacing ratio.The interface characteristics of the inner and outer core piles directly affect the bearing performance of the composite piles,and the prob-lems existing are pointed out in the research process of the composite piles.In the end,the future develop-ment trend of the strength composite piles is discussed,which provides reference value for the promotion and application of the strength composite piles in the future.
关键词
劲性复合桩/发展进程/承载特性/破坏模式/界面特性/工程应用
Key words
the strength composite pile/development process/beading performance/failure mode/inter-face characteristics/engineering application
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