Study On Pile-Soil Interaction Of Inclined-Pile Bulkhead Structure In The Deep Water High-Pile Wharf

Inclined pile and sheet piles with platform bulkhead structure (which is referred as inclined pile bulkhead structure in this paper) is a new type shore approach structure of high-pile wharf, which mainly adapt the case of high filling behind wharf structure. The interaction between inclined pile bulkhead structure and high filling is a typical passive pile-soil interaction problem, and the interaction process is very complicated. This paper bases on certain deep-water port that has used inclined pile bulkhead structure, to study the interaction between bulkhead and filling under the high-filling on back.The new type structure of deep water port is inducted in a brief, and the characteristics of different structure are analyzed. While the features of inclined pile bulkhead structure are introduced, the research status of interaction between structure and soil in pile-support wharf are summarized systematically.The numerical simulation of pile-soil interaction has been discussed. According to the project example, the numerical models, which of Back Vertical pile inclined pile bulkhead structure, Front Vertical pile inclined pile bulkhead structure and Double inclined pile bulkhead structure, are established.Construction simulate have been used in three types of inclined pile bulkhead. Analyzing the numerical results and comparing the numerical simulation result to the prototype observation data, the compared results show a good anatomist.Through analyzing the platform deformation, the displacement field of soil, the lateral displacement of piles, and the distribution of earth pressure on sheet piles' sides, the interaction between bulkhead and soil has been researched. Yet the internal force of piles and platform has been analyzed, such as the shaft force, moment of piles, and the firstly main stress of platform. And the characteristics of different inclined pile bulkhead structure have been compared and analyzed .Comprehensively analyzing the pile-soil interaction of different inclined pile bulkhead structure, it obtains the characteristics of different bulkhead structures, and puts forward some suggestions on structure type selection. The conclusion of this paper can be referenced by inclined bulkhead structure designation and construction.