A construction method of pre-reinforcement and hole-forming cast-in-situ piles in easily collapsed strata

A construction method and pre-reinforcement technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problems of poor self-stability of geological conditions, difficulty in forming holes for cast-in-place piles, and over-square concrete pouring, so as to improve construction efficiency, The effect of improving hole-forming quality and increasing hole-forming efficiency

Active Publication Date: 2022-03-25
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above-mentioned technical solutions still do not solve the problem of poor self-stability in geological conditions, easy to collapse when exposed to water, and relatively loose ground. When the cast-in-situ pile is constructed, it often occurs that the cast-in-place pile is difficult to form holes, the hole is seriously collapsed, and the concrete pouring is seriously oversized. And other issues

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 construction method of pre-reinforcement and hole-forming cast-in-situ piles in easily collapsed strata

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] Such as figure 1 Shown, a kind of collapsible stratum pre-reinforcement of the present invention forms the construction method of perforated pile again, carries out according to the following steps:

[0035] (1) Determination of the depth range of bored pile collapse;

[0036] Combined with the geological survey situation, find out the range of weak soil layers with poor self-stability, easy to collapse when exposed to water, and relatively loose, that is, the range of the collapse depth of bored piles:

[0037] A) Combined with the actual drilling situation on site, roughly determine the depth of the collapsed hole by observing the amount of soil lifte...

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 discloses a construction method for pre-reinforced and then hole-forming cast-in-situ piles in easily collapsed strata, which is carried out according to the following steps: (1) the range of the depth of the bored pile's collapsed hole is determined; (2) the soft soil stratum is reinforced within the range of the depth of the collapsed hole; 3) Form holes according to normal construction procedures. The invention can effectively solve the problems such as difficulty in forming holes for bored piles, serious collapse of holes, and serious over-square concrete pouring in the construction of bored piles in the weak and easy-to-collapse hole soil layer. At the same time, it can also make reasonable use of on-site machinery and reduce equipment In and out, reduce costs and improve construction efficiency.

Description

technical field [0001] The invention relates to the technical field of stratum pre-reinforcement construction engineering before bored piles are formed, in particular to a construction method for pre-reinforced and then bored cast-in-situ piles in easily collapsed strata. Background technique [0002] Domestic urban subway engineering construction is developing very rapidly. In the construction of subway tunnels and stations, the main construction methods include open-cut method, shield method and spray-anchor concealed excavation method. Due to the high safety factor of the open-cut method, it is often used as an urban subway Preferred method for stations. In the construction of the open cut method, the bored pile is the most common form of the enclosure structure of the two-story station. Compared with other pile technologies, the bored pile has a wide range of applications, fast construction speed, low noise, and low noise. The impact caused by the lives of the surroundi...

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): E02D3/12E02D5/46
CPCE02D3/126E02D5/46
Inventor 杨艳玲何进江刘学霸王坤王康胜吕高乐杨成春范东升宋康年张卫中谭建兵范国亮刘波汪建卫林兵杨建礼冯飞李少贤王帅张随涛
Owner ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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