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

A Method of Reducing Side Frictional Resistance of Pile Foundation

A technology of lateral friction resistance and pile foundation, applied in the field of geotechnical engineering, can solve the problems of adverse effects of slope stability, difficulty in slope reinforcement, and slope instability, so as to avoid reinforcement difficulties, reduce reinforcement costs, and reduce The effect of pile foundation side friction

Inactive Publication Date: 2020-11-24
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there may be a potential sliding surface on the high and steep slope, the side resistance of the pile on the slope will have an adverse effect on the stability of the slope, and even the side resistance of the pile to the surrounding soil will be too large, causing the slope to become unstable. Difficult reinforcement conditions can lead to accidents such as slope instability, large deformation, landslides, etc.

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
  • A Method of Reducing Side Frictional Resistance of Pile Foundation
  • A Method of Reducing Side Frictional Resistance of Pile Foundation
  • A Method of Reducing Side Frictional Resistance of Pile Foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] Please refer to figure 1 , the embodiment of the present invention provides a kind of method for reducing the side frictional resistance of pile foundation, comprises the following steps:

[0021] S1 makes multi-section isolation casing section 8, the material of isolation casing section 8 in this embodiment is steel, the length of the isolation casing section 8 is 4m, the thickness is 10-14mm, and the inner diameter is prefabricated diameter of the pile foundation 3, and smear asphalt coating 6 on the inner wall of each isolation casing section 8, the thickness of the asphalt coating 6 is 10mm, and before smearing the asphalt coating 6, the The surface of the isolated casing section 8 is cleaned and kept dry, so that the asphalt coating 6 and th...

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 provides a method for reducing side friction of a pile foundation. The method comprises the following steps of: S1, a plurality of isolation pile casing sections are manufactured, and anasphalt coating is pasted on the inner wall of each isolation pile casing section; S2, all the isolation pile casing sections are sequentially connected in a welded mode to form an isolation pile casing, the isolation pile casing is placed in a pile hole, a gap exists between the outer wall of the isolation pile casing and the inner wall of the pile hole, and the pile hole is vertically formed, penetrates through the slope body of a side slope and extends downwards into a stable stratum; S3, a concrete fixing layer is poured on the part, located in the stable stratum, of the gap, a gravel filling layer is filled in the space, on the concrete fixing layer, in the gap, and a flexible material filling layer is filled on the gravel filling layer; and S4, steel reinforcement cage welding and aconcrete guide pipe are arranged at the upper end of the isolation pile casing, pile body concrete is poured into the isolation pile casing, and a pile foundation is formed. The method has the beneficial effects that the load borne by rock-soil mass on the upper portion of the side slope is reduced, the situation that the side slope is difficult to reinforce is avoided, and side slope instability, large deformation, collapse and other disasters are prevented.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a method for reducing lateral frictional resistance of pile foundations. Background technique [0002] The rapid development of my country's national economy requires the construction of a large number of roads and bridges, high-rise buildings and other projects in the fields of transportation, water conservancy and hydropower. Due to the needs of site selection, when the pile foundation may be located on the slope, during the process of the upper vertical load being transmitted downward through the pile, the rock and soil on the upper part of the slope will be affected by the side friction of the pile. Because there may be a potential sliding surface on the high and steep slope, the side resistance of the pile on the slope will have an adverse effect on the stability of the slope, and even the side resistance of the pile to the surrounding soil will be too large...

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
Patent Type & Authority Patents(China)
IPC IPC(8): E02D33/00E02D5/38E02D17/20
CPCE02D5/38E02D17/207E02D33/00
Inventor 谭飞林大伟焦玉勇于锦程毅
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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