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

A construction method of steel pressure grouting cement-soil curtain curtain support pile

A construction method and technology for supporting piles, which are used in excavation, infrastructure engineering, construction, etc., can solve the problems of inability to form cement-soil aggregates, good impermeability, etc., and achieve improved occlusion effect, low pile strength, and reduced Effects of small perturbations and disruptions

Active Publication Date: 2020-05-19
北京建材地质工程有限公司 +2
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a construction method of section steel pressure grouting cement-soil curtain support piles, which can be applied to strata that cannot react with cement such as peat soil; it can solve the problem that effective cement-soil condensation cannot be formed after the reaction of groundwater and cement The construction of the support pile achieves the effect of combining water stop and support, and the inserted section steel can be recycled, saving and environmental protection; the support pile formed by pressure irrigation does not rely on the undisturbed soil, and the quality of the pile is good and Good anti-seepage effect

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 steel pressure grouting cement-soil curtain curtain support pile
  • A construction method of steel pressure grouting cement-soil curtain curtain support pile
  • A construction method of steel pressure grouting cement-soil curtain curtain support pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 2 Shown, a kind of construction method of section steel pressure grouting cement-soil curtain curtain support pile, comprises following construction steps:

[0046] Step a, measurement and setting out: measure and set out on a flat site, insert wooden sticks or steel bar sticks at the released pile positions for identification; in addition, make leading piles next to the pile positions so that they can be reviewed at any time when there is a deviation in the pile positions; leading piles It is two identification piles that form a straight line with the center of the pile position. The usual method for leading piles is to drill a deep hole on the ground with a steel drill or a hole puncher, and pour white lime powder into it;

[0047] Step b, the rotary drilling rig is in place: the operator controls the movement of the drilling rig according to the released pile position to ensure that the drilling axis is in place, and uses the self-contained device of ...

Embodiment 2

[0057] The difference from Embodiment 1 is that in step i, when the ground space is narrow and the special lifting machine has no operating space, the section steel is pre-lifted with a jack, and after reaching a certain height, such as after pulling out 1m, use a tower crane or The crane pulls up the whole section steel for recycling.

Embodiment 3

[0059] The difference from Example 1 is: replace step e with the following step e1: hang the perfusion conduit with a crane, connect the feed port of the conduit to the ground pump with a sealed hose; replace step f with the following step f1: Pressure grouting cement-soil pile construction: there is a valve at the bottom of the pouring conduit. When the conduit is put into the bottom of the hole, the valve is closed to prevent the mud in the hole from entering the conduit; Pump, start the ground pump, the ground pump will press the cement-soil slurry to the bottom of the hole through the conduit, and the cement-soil slurry will open the valve at the bottom of the conduit and enter the hole; lift the conduit while pressing and filling, and always keep the length of the conduit buried in the cement-soil slurry Not less than 2m until the pressure filling reaches the design elevation.

[0060] In addition, in order to further improve the reliability of the water-stop curtain, aft...

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
compressive strengthaaaaaaaaaa
osmotic coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a construction method of steel-grown cement-soil curtain curtain support piles. The main point of the technical plan is that the construction method includes the following construction steps: measurement and lofting, rotary drilling rig in place, drilling, cement-soil slurry preparation, long auger drilling rig in place, pressure grouting cement-soil pile body construction, inserting section steel, crown beam construction and Pull out the steel. This method can be applied to strata that cannot react with cement, such as peat soil; it can solve the problem that effective cement-soil aggregates cannot be formed after the reaction between groundwater and cement; As a result, the inserted section steel can be recycled, saving and environmental protection; the support pile formed by pressure irrigation does not depend on the undisturbed soil, and the pile quality is good and the anti-seepage effect is good.

Description

technical field [0001] The invention relates to the field of foundation pit water-stop curtain engineering, in particular to a construction method for a section steel pressure grouting cement-soil curtain support pile. Background technique [0002] Such as figure 1 As shown, the water-stop curtain refers to a continuous water-stop body arranged on the periphery of the building foundation pit 1 to ensure the excavation of the foundation pit 1 and to prevent or reduce the flow of groundwater at the side wall of the foundation pit and at the bottom of the foundation pit. The commonly used structure of the water-stop curtain is that the support piles 2 and the water-stop piles 3 are arranged at intervals in a row, and partially overlap each other to form a joint 4 . The support pile 2 mainly plays the role of retaining soil, and the water stop pile 3 plays the role of blocking the water layer outside the foundation pit from flowing into the foundation pit. [0003] The water-s...

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): E02D17/04E02D19/16C04B28/02C04B111/27
CPCC04B28/02C04B2111/00017C04B2111/00146C04B2111/00293C04B2111/00732C04B2111/27C04B2201/50E02D17/04E02D19/16E02D2250/003E02D2300/0023E02D2300/0029C04B14/10C04B14/02C04B18/08C04B2103/0068
Inventor 何世鸣李江田震远周与诚张明中陈辉贾城梁成华司呈庆黄鑫峰王建明王海宁郁河坤洪伟郭跃龙陈鹏
Owner 北京建材地质工程有限公司
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

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com