The Research Of Squeezed Pile With Expanded Branches About The Dish Formation And The Bearing Capability Of Vertical Load

The squeezed pile with expanded branches developed from the common cast－in－place pile,the branches or the dishes established in the pile for different position of body are formed through a kind of equipments which skillfully squeezed the soil in the hole of the common concrete pile. At the same time, we can make the stake attain the designed ability through control the liquidPresses. In this paper we analyzed two process for the formation of the dish which afford the presses, compared two kinds of dishes which formed through two kind of equipment. Make out the method to draw the outline of two kinds of dishes respectively. At the same time, we also point out that the shape of the dish is curves instead of straight line and analyzed the suffering of soil in the process of squeezing. Through the quiescent test in Dongying city Shandong province,We analyzed the ability of the squeezed pile with expanded branches in the proceed of affording the load. We appointed that the ability of the pile is twice as the common pile. We simulate the pile of the test by the software of FLAC and got the process of the load transfer and appointed the function of the dish in the process of the load transfer. At the same time, the stress field and the displacement field of the dish in the process of affording the load is studied, the top range of the stress field is at the boundary of the dish and pile. There are 0.5m to 0.6m between the bottom of the range and the boundary. The stress field does not change with the load and the position of the dish.