Method for jacking steel casting of bored pile by using jacks

A technology of bored cast-in-place piles and steel casings, which is applied to sheet pile walls, buildings, and foundation structure engineering. It can solve the problems that the working face may not meet the requirements, the static friction resistance is large, and there is no lifting force, so as to achieve turnover The effect of high utilization rate, easy control and slow stroke

Inactive Publication Date: 2010-09-15
CHINA FIRST METALLURGICAL GROUP
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the steel casing is buried too deep, the static friction resistance is very large, generally more than 100 tons. Existing equipment, such as a crane or other lifting equipment for pulling out the steel casing, generally does not have such a large lifting force. , At the same time, the working face may not be able to meet the requirements, often resulting in the failure to pull out the steel casing, and sometimes causing serious economic losses

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 jacking steel casting of bored pile by using jacks
  • Method for jacking steel casting of bored pile by using jacks
  • Method for jacking steel casting of bored pile by using jacks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] See Figure 1-2 , A method for pulling out the steel casing of a bored pile with a jack, which includes the following steps: a) Place two smooth sleepers 8 horizontally on the ground 7 on both sides of the steel casing 4 being pulled out, so The connecting line of the two lifting lugs 5 of the steel protective tube that the two sleepers are pulled up vertically; b) A jack 6 is placed on each sleeper, and a beam 1 is set on the two jacks (I-steel can be selected), each A steel wire rope 3 is provided on the beam above the lifting lugs. The steel wire rope passes through the lifting lugs of the steel casing and is fixedly connected to the two free ends of the steel wire rope; The two free ends are connected; c) Two people shake the jack at the same time, the jack lifts up the beam, and the beam pulls up the steel protective tube through the wire rope. The steel guard tube only needs to be pulled out. After the pull out, the static friction resistance is converted into dyn...

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 relates to a method for jacking a steel casting of a bored pile by using jacks, which comprises the flowing steps of: placing two smooth sleepers horizontally on the ground on two sides of the jacket steel casting, wherein the two sleepers are vertical to the connecting line of two lifting lugs of the steel casting; (b) placing a jacket on each sleeper; arranging a cross beam on the two jackets; arranging a steel wire rope on the cross beam above each lifting lug, wherein the steel wires pass through the lifting lugs of the steel casting and the two free ends of the steel wire ropes are fixedly jointed; and (c) turning the jackets by two persons at the same time to jack the cross beam up so that the steel casting is pulled up by the cross beam through the steel wire ropes. The invention has the advantages of simple structure, convenient and simple operation, high safety and reliability, no limit by places, fast construction and low cost.

Description

Technical field [0001] The invention relates to a jacking device, in particular to a method for pulling out a steel casing of a bored pile with a jack. Background technique [0002] In view of the bad geological conditions, bored piles are needed to bore holes that are easy to collapse. Generally speaking, it is necessary to adopt extra-long steel casing for support before drilling. However, because the steel protective tube is buried too deeply, the static friction resistance is very large, generally above 100 tons. The existing equipment, such as the steel protective tube using crane or other lifting equipment, generally does not have such a large lifting force. , At the same time, the working face may not meet the requirements, which often results in the failure to pull out the steel protective cylinder, and sometimes causes serious economic losses. Summary of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems and provide a me...

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 Applications(China)
IPC IPC(8): E02D9/02E02D5/38
Inventor 邵正东尹传斌李少辉吴宗庆王春兰
Owner CHINA FIRST METALLURGICAL GROUP
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