Middle and small span bridge grouting miniature steel pipe pile, pile foundation and construction methods thereof

A construction method and technology of steel pipe piles, which are applied in basic structure engineering, sheet pile walls, buildings, etc., can solve the problems of unrestricted use scope, incomplete construction process, and many operation steps, so as to solve the damage to the pile body and improve the Construction efficiency, simple operation effect

Inactive Publication Date: 2020-01-17
HEBEI UNIV OF TECH
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not limit the scope of use, there are many operating steps, and three special grouting processes are requir

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
  • Middle and small span bridge grouting miniature steel pipe pile, pile foundation and construction methods thereof
  • Middle and small span bridge grouting miniature steel pipe pile, pile foundation and construction methods thereof
  • Middle and small span bridge grouting miniature steel pipe pile, pile foundation and construction methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0048] Example

[0049] (1) Geological survey: use geological survey tools to find out the type and distribution of each rock layer of the construction foundation, measure the bearing capacity, porosity and water content of the strata traversed by the designed pile length, and calculate the highest range of river erosion;

[0050] (2) Fixed-point drilling: According to the results of the geological survey, clean up and level the construction site, use measuring instruments to accurately locate and number the pile holes according to the position of the piles, determine the construction sequence, and choose skip hole grouting; use a hole diameter of 150mm According to the design of the small drilling machine, the pile diameter is 150mm and the pile length L=10m, and the hole is drilled smoothly and vertically. The hole position deviation does not exceed 20mm, and the vertical inclination does not exceed 1°;

[0051] (3) Hole cleaning: After drilling the hole to the design mark, after c...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a middle and small span bridge grouting miniature steel pipe pile, a pile foundation and construction methods thereof. The pile construction method comprises the following steps of geological exploration; fixed-point drilling; hole cleaning; machining and manufacturing of a miniature steel pipe; welding of a centering frame; lowering of the miniature steel pipe and a grouting pipe; secondary hole cleaning; primary grouting; secondary grouting; and obtaining of the grouting miniature steel pipe pile with sealing and flattening. The pile foundation construction method comprises the following steps that the outer surfaces of the side walls of the pile tops are provided with a cushion layer, and group piles are connected into a whole through the cushion layer; and the outer surface of the side wall of the pile top of each pile above the cushion layer is uniformly welded with at least three reinforcing steel bars, and the reinforcing steel bars extend into a bearingplatform at at least 30 times of the diameter of the steel bars to obtain the grouting miniature steel pipe pile foundation. By combining the miniature steel pipe piles with a tunnel pipe shed grouting technology, the construction methods are simple to operate and high in pile forming quality, can solve the problems that surrounding buildings are influenced by pile body damages and static pressuretype pile pressing caused by traditional hammer type pile sinking and the like can be effectively solved and is capable of obviously improving the construction efficiency, reducing pollution and lowering the cost at the same time.

Description

technical field [0001] The invention relates to the technical field of bridge pile foundation construction, in particular to a small and medium-sized span bridge grouting miniature steel pipe pile and pile foundation and a construction method. Background technique [0002] Small and medium-sized span bridges refer to bridges with a total porous span length of 8-100m and a single-hole span within the range of 5-40m. With the vigorous development of highway traffic construction in our country, the importance of small and medium-sized bridge construction has attracted attention. Commonly used bridge foundations include enlarged foundations, bored pile foundations, and steel pipe pile foundations. When the ground conditions are complex and it is difficult to excavate construction, the traditional pile type can no longer meet the current needs. [0003] Micro steel pipe pile refers to a new type of steel pipe pile with a diameter of no more than 300mm and an aspect ratio of no l...

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): E02D5/38E02D13/00E02D27/12E02D27/16
CPCE02D5/38E02D13/00E02D27/12E02D27/16
Inventor 肖成志司雨李立书吴洪波马文华
Owner HEBEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap