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Pile foundation negative friction eliminating device
The pile foundation negative friction eliminating device comprises an upper pile body with a hole in the middle, a lower pile body and a negative friction eliminating piece arranged between the upper pile body and the lower pile body, the pile end of the lower pile body is fixedly embedded in a bearing layer, and the negative friction eliminating piece is arranged at the position 300 mm-500 mm above and below the neutral point of the pile body. When soil around the pile generates negative friction on the upper pile body, the negative friction eliminating piece generates upward hydraulic pressure equal to the negative friction, and then the upward hydraulic pressure and the negative friction counteract each other. The negative friction eliminating part comprises an annular load box, a plurality of through holes are distributed in the annular load box along the circumference, hydraulic devices are embedded in the through holes, oil inlets of the hydraulic devices are jointly connected with an external oil cylinder and pressurizing equipment through conveying parts, and oil outlets of the hydraulic devices are jointly connected with the external oil cylinder through output parts. Hydraulic rods in the hydraulic devices are jointly connected with a titanium alloy push plate, the titanium alloy push plate makes contact with the lower end face of the upper pile body, when the device is subjected to negative friction resistance in the operation process, vertical upward force can be generated, then the negative friction resistance is eliminated, and therefore settlement of a pile foundation is reduced.
本发明公开了一种桩基负摩阻力消除装置，包括中部带有孔洞的上桩体、下桩体及设置在上桩体和下桩体之间的负摩阻力消除件，所述下桩体桩端嵌固在持力层，负摩阻力消除件设置在桩体中性点上下300mm‑500mm处，当桩周土对上桩体产生负摩阻力时，负摩阻力消除件产生与负摩阻力同等向上液压力进而相互抵消；负摩阻力消除件包括环形荷载箱，环形荷载箱沿着圆周分布有多个通孔且通孔均嵌设有液压器，液压器的进油口共同通过输送件与外部的油缸和加压设备连接，液压器的出油口共同通过输出件与外部的油缸连接，液压器内的液压杆共同连接有钛合金推板，钛合金推板与上桩体下端面接触，该装置通过在运行过程中在受到负摩阻力时，会产生一个竖直向上的力，进而消除负摩阻力，从而减小桩基的沉降。
Pile foundation negative friction eliminating device
The pile foundation negative friction eliminating device comprises an upper pile body with a hole in the middle, a lower pile body and a negative friction eliminating piece arranged between the upper pile body and the lower pile body, the pile end of the lower pile body is fixedly embedded in a bearing layer, and the negative friction eliminating piece is arranged at the position 300 mm-500 mm above and below the neutral point of the pile body. When soil around the pile generates negative friction on the upper pile body, the negative friction eliminating piece generates upward hydraulic pressure equal to the negative friction, and then the upward hydraulic pressure and the negative friction counteract each other. The negative friction eliminating part comprises an annular load box, a plurality of through holes are distributed in the annular load box along the circumference, hydraulic devices are embedded in the through holes, oil inlets of the hydraulic devices are jointly connected with an external oil cylinder and pressurizing equipment through conveying parts, and oil outlets of the hydraulic devices are jointly connected with the external oil cylinder through output parts. Hydraulic rods in the hydraulic devices are jointly connected with a titanium alloy push plate, the titanium alloy push plate makes contact with the lower end face of the upper pile body, when the device is subjected to negative friction resistance in the operation process, vertical upward force can be generated, then the negative friction resistance is eliminated, and therefore settlement of a pile foundation is reduced.
本发明公开了一种桩基负摩阻力消除装置，包括中部带有孔洞的上桩体、下桩体及设置在上桩体和下桩体之间的负摩阻力消除件，所述下桩体桩端嵌固在持力层，负摩阻力消除件设置在桩体中性点上下300mm‑500mm处，当桩周土对上桩体产生负摩阻力时，负摩阻力消除件产生与负摩阻力同等向上液压力进而相互抵消；负摩阻力消除件包括环形荷载箱，环形荷载箱沿着圆周分布有多个通孔且通孔均嵌设有液压器，液压器的进油口共同通过输送件与外部的油缸和加压设备连接，液压器的出油口共同通过输出件与外部的油缸连接，液压器内的液压杆共同连接有钛合金推板，钛合金推板与上桩体下端面接触，该装置通过在运行过程中在受到负摩阻力时，会产生一个竖直向上的力，进而消除负摩阻力，从而减小桩基的沉降。
Pile foundation negative friction eliminating device
一种桩基负摩阻力消除装置
QIN WEI (author) / HE KUN (author) / TANIKAWA (author) / WANG JUN (author) / CHEN YONGWEI (author) / YI XIAOHUI (author)
2024-07-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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