CN108239985A - Artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method - Google Patents

Artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method Download PDF

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Publication number
CN108239985A
CN108239985A CN201611271925.5A CN201611271925A CN108239985A CN 108239985 A CN108239985 A CN 108239985A CN 201611271925 A CN201611271925 A CN 201611271925A CN 108239985 A CN108239985 A CN 108239985A
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CN
China
Prior art keywords
digging pile
artificial digging
drilling
construction
slip casting
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201611271925.5A
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Chinese (zh)
Inventor
张双平
黄旭生
刘炜
Original Assignee
张双平
黄旭生
刘炜
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Publication date
Application filed by 张双平, 黄旭生, 刘炜 filed Critical 张双平
Priority to CN201611271925.5A priority Critical patent/CN108239985A/en
Publication of CN108239985A publication Critical patent/CN108239985A/en
Withdrawn legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/06Foundation trenches ditches or narrow shafts
    • E02D17/08Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/66Mould-pipes or other moulds
    • E02D5/68Mould-pipes or other moulds for making bulkheads or elements thereof

Abstract

The present invention provides a kind of artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method, is the construction method for using for reference constructing tunnel small-lead-tube advanced slip-casting retaining wall.When artificial digging pile encounters soft layer or drift sand formation, phenomena such as stake pore-forming operation will appear collapse hole, shrinkage cavity, influence pore-forming operation, the method can be used, slip casting is carried out to caisson surrounding soft layer or drift sand formation, make slurries integral with soil solidifying, so as to play the role of Gu Bi, ensure the smooth construction of artificial digging pile.The present invention has many advantages, such as safe, at low cost, effect is good, and simple for process, materials are easy, and the geological disaster that soft layer or drift sand formation are met suitable for artificial digging pile is handled for manual digging pile construction operation.

Description

Artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method
Technical field
The present invention relates to a kind of auxiliary pre-add solid method of stake holes pore-forming operation during pile foundation construction, especially with weakness Under the geological conditions of soil layer or drift sand formation, auxiliary pre-add solid method during using manually digging hole.
Background technology
In pile foundation manually digging hole work progress, usually per certain depth is excavated downwards, one is poured on stake holes inner wall Layer concrete retaining wall.But it is frequently encountered soft layer or drift sand formation during borehole, it may appear that phenomena such as collapse hole, shrinkage cavity, Pore-forming is relatively difficult, can not pour retaining wall, and be easy to cause safety accident.
This method is to use for reference the construction method of constructing tunnel small-lead-tube advanced slip-casting retaining wall, is bored in the surrounding of stake holes from ground Hole passes through soft layer or drift sand formation, and steel floral tube (surrounding of steel pipe is drilled with some apertures) is then descended from drilling to bad soil layer Carry out high-pressure slip-casting so that the soft layer or drift sand formation and slurry consolidation around stake holes are into a closely knit entirety, so as to protect Borehole job safety normally completes in card stake.It will be apparent that being handled compared to common stratum consolidation, equipment needed for the method is simple, It can gather materials on the spot, effect is high, investment reduction.
Invention content
The purpose of the present invention is to provide a kind of pile foundation borehole auxiliary under soft layer or drift sand formation geological conditions Pre-reinforcing construction method while to geological disaster effectively prevent and block, can improve borehole construction efficiency, save into This.
The particular content of the present invention is as follows:
(1) according to artificial digging pile stake diameter, annular bore position is measured along stake diameter periphery suitable distance;
(2) adjustment drilling machine is in place, carries out bore operation;
(3) conduit is buried toward the hole that drills;
(4) conduit arranges the high-pressure slip-casting in conduit after the completion;
(5) it treats that slurries reach intensity with adverse soil mass solidification, detects slip casting result;
(6) after slip casting retaining wall reaches requirement, start common artificial digging pile pore-forming operation;
(7) the usual pore-forming way of artificial digging pile, i.e., per certain depth (being usually no more than 1m) is excavated downwards, around stake inner wall One layer of reinforced concrete core-tube is poured, so cycle carries out, until pore-forming is completed.
Above-mentioned construction method further includes following technical characteristic:
(1) the ductule arrangement spacing need to be computed determining;
(2) socket mode spreading need to be used when the ductule length is inadequate, the length of ductule is to enter one depthkeeping of rock stratum Subject to degree;
(3) ductule is laid using drilling, and drilling depth is more than catheter length, is headed into using hammering or drilling machine, is inserted into length Degree is not less than the 90% of pipe range;
(4) grouting with small pipe Mortar mix proportion must be computed and test and is determining;
It (5) should be periodically to underground water sampling laboratory examination during grouting with small pipe;
(6) ductule pipe shaft presses quincunx laying slurry discharging hole, and end of conduit is processed into tip, is vertically inserted along stake holes periphery Enter.
Description of the drawings
(1) Fig. 1 is the construction process figure of this grouting with small pipe
(2) Fig. 2 is the geologic structure schematic diagram containing soft layer or drift sand formation
(3) Fig. 3 is along stake holes periphery drilling schematic diagram one
(4) Fig. 4 is along stake holes periphery drilling schematic diagram two
(5) Fig. 5 is ductule full figure
(6) Fig. 6 is single fluid grouting machine schematic diagram
(7) Fig. 7 is that cross-section diagram is completed in conduit slip casting
Specific embodiment
Below in conjunction with attached drawing, and pass through specific embodiment, the present invention is described in detail:
(1) Fig. 2 show a kind of geologic structure schematic diagram containing soft layer or drift sand formation, and top 1 is soil layer or rock Layer, middle part 2 are soft layer or drift sand formation, and lower part is still soil layer or lithosphere.
(2) the first round position is measured along stake holes periphery, as shown in Figure 3.
(3) according to the 2nd round position of grouting and reinforcing scheme arrangement, as shown in Figure 4.
(4) hole position is 800mm along pile body week back gauge stake well edge 800mm, circumferential spacing, is determined by calculation.
(5) conduit usesSeamless steel pipe, pipe shaft press quincunx laying slurry discharging hole, aperture 6-8mm, spacing 20cm-30cm;Tip is processed into ductule end, is inserted perpendicularly into along ground.
(6) using the slip casting in multiple ductules simultaneously of more single-pipe grouting machines, the height of slip casting is greater than soft layer Or the upper and lower each about 0.5m of drift sand formation, slip casting completion are cleared out a gathering place immediately, exit all grouting equipments.
(7) it is detected after slip casting reaches design strength, artificial digging pile is excavated after qualified.
(8) usual method is pressed in the operation of artificial digging pile pore-forming, i.e., per certain depth is excavated downwards, is poured along stake inner wall One layer concrete retaining wall, sequentially cycle construction are completed.

Claims (7)

1. artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method, which is characterized in that include the following steps:
(1) according to artificial digging pile stake diameter, annular bore position is measured along stake diameter periphery suitable distance;
(2) adjustment drilling machine is in place, carries out bore operation;
(3) conduit is buried toward the hole that drills;
(4) conduit arranges the high-pressure slip-casting in conduit after the completion;
(5) it treats that slurries reach intensity with adverse soil mass solidification, detects slip casting result;
(6) after slip casting retaining wall reaches requirement, start common artificial digging pile pore-forming operation;
(7) artificial digging pile is into usual pore-forming way:I.e. per certain depth (being usually no more than 1m) is excavated downwards, poured around stake inner wall One layer of reinforced concrete core-tube is built, so cycle carries out, until pore-forming is completed.
2. according to the method described in claim 1, it is characterized in that:Distance of the drilling away from stake holes periphery is 500~1000mm, is bored Orifice ring is 500~1000mm to spacing, and stake holes peripheral distance and the circumferential spacing of drilling can be determined by calculation;It separately can be according to soil layer Situation and reinforcing needs, and is computed applying second row looping pit, and the distance between the second row hole drilling and the first row hole drilling be 500~ 1000mm。
3. according to the method described in claim 1, it is characterized in that:The ductule usesSeamless steel pipe, pipe Body presses quincunx laying slurry discharging hole, aperture 6-8mm, spacing 20cm-30cm.
4. according to the method described in claim 3, it is characterized in that:Tip is processed into ductule end, is inserted perpendicularly into along ground.
5. according to the method described in claim 3, it is characterized in that:It is connect by the way of socket when the length of ductule is inadequate Long, the length of ductule, which is subject to, reaches rock stratum certain depth.
6. according to the method described in claim 2, it is characterized in that:Drilling depth is more than catheter length, using hammering or drilling machine It heads into, intubating length is not less than the 90% of pipe range.
7. according to the method described in claim 1, it is characterized in that:Grouting with small pipe Mortar mix proportion must be tests determined, The ratio of mud is generally 1.5: 1.O, 1.0: 1.0,0.8: 1.0 three grades.In view of needing to excavate as early as possible after slip casting, slip casting is preferably used general Water flowing mud or high-early (strength) cement, and waterglass etc. can be added according to soil layer property and forms double slurries, it is answered using single fluid grouting or biliquid Close slip casting.
CN201611271925.5A 2016-12-27 2016-12-27 Artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method Withdrawn CN108239985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611271925.5A CN108239985A (en) 2016-12-27 2016-12-27 Artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611271925.5A CN108239985A (en) 2016-12-27 2016-12-27 Artificial digging pile per-fore pouring liquid with small pipe pre-reinforcing construction method

Publications (1)

Publication Number Publication Date
CN108239985A true CN108239985A (en) 2018-07-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110258551A (en) * 2019-06-27 2019-09-20 四川公路桥梁建设集团有限公司 A kind of vertical ductule pipe curtain supporting construction of friction pile pore digging and construction method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103031839A (en) * 2013-01-10 2013-04-10 中铁七局集团第三工程有限公司 Construction method of hand-dug piles
US20140050531A1 (en) * 2012-08-17 2014-02-20 Ric-Man Construction, Inc. Shaft construction in the earth and method thereof
CN104499479A (en) * 2014-12-19 2015-04-08 上海申元岩土工程有限公司 Dig-hole pile construction method based on penetration of sand gravel backfilling layer
CN105464074A (en) * 2015-11-22 2016-04-06 合肥工业大学 Manual hole digging pile high polymer grouting protection structure and construction method thereof
CN105822327A (en) * 2016-05-20 2016-08-03 中国电建集团铁路建设有限公司 Lateral advance reinforcement construction method with underground excavation small pilot tunnels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140050531A1 (en) * 2012-08-17 2014-02-20 Ric-Man Construction, Inc. Shaft construction in the earth and method thereof
CN103031839A (en) * 2013-01-10 2013-04-10 中铁七局集团第三工程有限公司 Construction method of hand-dug piles
CN104499479A (en) * 2014-12-19 2015-04-08 上海申元岩土工程有限公司 Dig-hole pile construction method based on penetration of sand gravel backfilling layer
CN105464074A (en) * 2015-11-22 2016-04-06 合肥工业大学 Manual hole digging pile high polymer grouting protection structure and construction method thereof
CN105822327A (en) * 2016-05-20 2016-08-03 中国电建集团铁路建设有限公司 Lateral advance reinforcement construction method with underground excavation small pilot tunnels

Non-Patent Citations (1)

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Title
北京土木建筑学会主编: "《市政基础设施工程施工组织设计与施工方案》", 30 November 2015, 北京土木建筑学会主编 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110258551A (en) * 2019-06-27 2019-09-20 四川公路桥梁建设集团有限公司 A kind of vertical ductule pipe curtain supporting construction of friction pile pore digging and construction method

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Application publication date: 20180703

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