Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pile foundation structure for reducing side friction force

A technology of side friction resistance and pile foundation, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems that hidden safety hazards cannot be discovered and eliminated in time, high operation and maintenance costs, and cannot be applied at the same time, so as to achieve good benefits, The effect of clear principle and simple construction

Pending Publication Date: 2017-09-22
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
View PDF10 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned problems encountered in the use of friction piles, at present, the method of repairing and deforming the road surface and buildings deformed due to settlement is generally adopted. However, the existing operation and maintenance are all under the condition that the deformation has already occurred. Therefore, the following problems still exist: (1) The potential safety hazards caused by settlement deformation cannot be discovered and eliminated in time, which may easily lead to accidents; (2) Due to the repeated occurrence of settlement deformation, the investment in later operation and maintenance will be large, High operation and maintenance costs
However, the technical solutions provided in the above-mentioned patents can only deal with the impact of negative frictional resistance, and cannot eliminate the impact of positive frictional resistance on the side of the pile foundation, and positive frictional resistance is the same as negative frictional resistance. The condition of the pile foundation and surrounding buildings is affected, so it is also important to eliminate the effect of positive friction
In addition, and the subject of the above-mentioned technical scheme is relatively single, it cannot be applied to prefabricated piles and cast-in-situ piles at the same time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pile foundation structure for reducing side friction force
  • Pile foundation structure for reducing side friction force
  • Pile foundation structure for reducing side friction force

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as figure 1 Shown, is a kind of pile foundation structure that reduces side frictional resistance, and it comprises pile body main body and outer sleeve 2, and lubricant 4, wherein,

[0048] The main body of the pile body adopts a preformed prefabricated pile 3, the top of the main body of the pile body is connected with the supporting platform, and the bottom of the main body of the pile body extends into the bearing layer to play a supporting role;

[0049] The outer sleeve 2 is sleeved on the periphery of the main body of the pile, and the soil layer on the side is separated from the main body of the pile, and the bottom ends of the outer sleeve 2 are extended into the bearing layer and fixed;

[0050] The gap between the main body of the pile body and the outer sleeve 2 is filled with a lubricant 4 for reducing the friction between the outer sleeve and the main body of the pile body,

[0051] The outer sleeve 2 and the prefabricated pile 3 are made of glass fi...

Embodiment 2

[0057] Such as figure 2 Shown, is a kind of pile foundation structure that reduces side frictional resistance, and it comprises pile body main body and outer sleeve 2, and lubricant 4, wherein,

[0058] The main body of the pile adopts a pile structure formed by on-site pouring, the top of the main body of the pile is connected to the supporting platform, and the bottom of the main body extends into the bearing layer to play a supporting role;

[0059] The outer sleeve 2 is sleeved on the periphery of the main body of the pile, and the soil layer on the side is separated from the main body of the pile, and the bottom ends of the outer sleeve 2 are extended into the bearing layer and fixed;

[0060] The gap between the main body of the pile body and the outer sleeve 2 is filled with a lubricant 4 for reducing the friction between the outer sleeve and the main body of the pile body,

[0061] The pile structure formed by pouring on site includes an inner sleeve 6 and poured con...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of track traffic projects, building construction engineering and the like, and particularly relates to a pile foundation structure for reducing side friction force. The pile foundation structure comprises a pile body main body, an outer sleeve and a lubricating agent, wherein the pile body main body is a preformed pile which is formed in advance or is of a pile structure which is poured on site, the top of the pile body main body is connected with a support platform, and the bottom of the pile body main body extends into a supporting layer so as to achieve a support effect; the outer sleeve sleeves the periphery of the pile body main body, and the bottom end of the outer sleeve extends into the supporting layer and is fixed; and a gap between the pile body main body and the outer sleeve is filled with the lubricating agent. The pile foundation structure can resist the influence of positive friction force and negative friction force at the same time, the deformation of the pile foundation structure and surrounding buildings is controlled from two aspects, and the pile foundation structure is suitable for the preformed pile and the filling pile, has the advantages of simplicity and convenience in construction, safe and reliable structure and the like and is especially suitable for protection engineering of sensitive buildings (structures).

Description

technical field [0001] The invention belongs to the technical fields of rail transit engineering, housing construction engineering, etc., and more specifically relates to a pile foundation structure for reducing lateral frictional resistance. Background technique [0002] Pile foundations can be divided into friction piles and end-bearing piles according to the principle of bearing capacity. Among them, the vertical load on the top of the friction pile is mainly borne by the friction force on the pile side, and the bearing force at the pile end is relatively small. Generally, after the pile is subjected to axial load, it will displace downward relative to the soil on the side of the pile, so the soil will produce upward frictional resistance on the pile, which is called positive frictional resistance; however, when the soil around the pile occurs for some reason When the settlement rate of the soil is greater than the sinking rate of the pile, the soil on the side of the pil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): E02D27/14E02D5/66E02D5/38E02D5/24
CPCE02D5/24E02D5/38E02D5/665E02D27/14
Inventor 朱炎兵赵星徐军林王鹏
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products