Method for detecting and reinforcing vertical bearing force of defective large-diameter socketed pile

A technology with large diameter and bearing capacity, which is used in the test of foundation structure, repair of foundation structure, construction, etc.

Active Publication Date: 2016-01-27
HUALAN DESIGN GRP CO LTD
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the construction process of large-diameter rock-socketed piles in the project, a relatively simp

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
  • Method for detecting and reinforcing vertical bearing force of defective large-diameter socketed pile
  • Method for detecting and reinforcing vertical bearing force of defective large-diameter socketed pile
  • Method for detecting and reinforcing vertical bearing force of defective large-diameter socketed pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0063] The following is an example of a project in Liuzhou City, Guangxi Zhuang Autonomous Region

[0064] Taking a certain project in Liuzhou City as an example, the building is a super high-rise apartment-style office building with a height of 208m above the ground. End resistance standard value is 20000kPa, and the characteristic value of the design single pile bearing capacity is 59000kN. If the static load test is adopted, the pile pressure force should not be less than 118000kN. Integrity testing of the pile body is carried out using the method, and no less than 10% of the total number of piles and no less than 10 engineering piles are randomly selected for core drilling inspection to detect the integrity of the pile body, concrete strength, thickness of pile tip sediment, and pile tip rock formation. Integrity and core strength etc. In view of the fact that the rock-socketed piles of this project are mainly end-bearing, if the sediment at the pile end is too thick, i...

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
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a method for detecting and reinforcing vertical bearing force of a large-diameter rock upper end bearing pile in construction of high-rise buildings and bridges. The method includes the specific steps that firstly, a large-diameter socketed pile is constructed, and in the pile center nearby a drilling core hole where a rock core cannot be taken out, holes with the diameter larger than or equal to 320 mm are drilled through a large-diameter drilling machine till the holes are drilled in the pile bottom; secondly, when it is tested that the ultimate tip resistance standard value of a rock-soil layer on the tip of the detected pile does not meet the design requirement through a small pressing plate, in the position of original detecting holes, a rotary drilling machine capable of drilling rock or a punching machine drills or punches holes again in the positions of original drilled holes; thirdly, the rotary drilling machine capable of drilling rock or the punching machine is directly used for drilling holes in the middle of an original pile till the holes are drilled in the pile bottom, and core pile design is calculated and determined through supplemented construction reconnaissance hole drilling; and fourthly, by additionally arranging a core pile and improving the pile tip bearing force and the pile body bearing force of the core pile, the situation that the bearing force of single piles is reduced because of local defects of a pile tip bearing stratum can be compensated for. The method is simple and feasible and is used when defects are found in the large-diameter socketed pile checking and accepting process, and the purpose of determining, reinforcing and checking and accepting the bearing force of a pile foundation is achieved.

Description

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

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
Owner HUALAN DESIGN GRP CO LTD
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.

© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap