CN110374086A - It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity - Google Patents
It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity Download PDFInfo
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- CN110374086A CN110374086A CN201910450022.0A CN201910450022A CN110374086A CN 110374086 A CN110374086 A CN 110374086A CN 201910450022 A CN201910450022 A CN 201910450022A CN 110374086 A CN110374086 A CN 110374086A
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- pile
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- small pile
- pier
- construction method
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- 238000010276 construction Methods 0.000 title claims abstract description 50
- 230000007480 spreading Effects 0.000 title claims abstract description 26
- 239000011435 rock Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 239000011162 core material Substances 0.000 claims abstract description 8
- 230000010412 perfusion Effects 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims description 23
- 238000005507 spraying Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of for improving the spreading construction method of existing pier, pile bearing capacity, it is characterised in that the spreading construction method forms vertical small pile stake holes the following steps are included: the progress drilling and forming hole operation in existing pier base；Small pile core material is set in the small pile stake holes, and pressure injection or perfusion injection cementitious material form small pile into the small pile stake holes, the small pile and the pier base rubber congeal into induration.The invention has the advantages that making full use of former pier, the foundation pile constructed, small pile of constructing inside it realizes the carrying and embedding rock requirement on demand of expected design to carry out effective spreading, reinforcement；The wasting of resources is avoided to the maximum extent, reduces environmental pollution；Continuous productive process, effectively save construction period can be intersected with other construction content realizations when small-sized pile driving construction.
Description
Technical field
The present invention relates to technical field of civil engineering, and in particular to it is a kind of for improving existing pier, pile bearing capacity connects
Long construction method.
Background technique
When natural foundation capability is unable to satisfy the load action of superstructure or structures or Deformation control requires,
Often compensated using pier, foundation pile or composite foundation processing.Wherein pier, foundation pile because design it is unreasonable or in the construction process by
It is unreasonable in the establishment such as management, lectotype selection, technical parameter, it often will cause the pier of construction molding, foundation pile cannot reach design
It is expected that requiring；Or because superstructure or the change of structures function, add-story reconstruction need, it is necessary to adopt an effective measure to above-mentioned
Pier, foundation pile are handled.Conventional treatment method specifically:
Method 1: superstructure or structures are not yet constructed
(1) on Yuan Dun, foundation pile periphery, construct again corresponding pier, foundation pile carries out all or part of replacement to it；
(2) Jiang Yuandun, foundation pile are carried out in situ broken or pull out, and re-start corresponding pier after backfill class undisturbed soil on demand, foundation pile is applied
Work.
Method 2: superstructure or structures have been constructed
(1) meet pile sinking counter-force in superstructure or structures load or enough pile sinking counter-forces can be provided by counterweight setting
In the case of, construction is compensated to former pier, foundation pile using anchor jacked pile (prefabricated pile, piling bar etc.) mode.
(2) in the case that pile sinking counter-force is unable to satisfy piling construction at the construction field (site), using in method 1 1. by the way of carry out
Compensation construction.
Above-mentioned processing mode all cannot sufficiently be recycled corresponding pier, foundation pile, and difficulty of construction is larger, the duration compared with
Long, higher cost, greatly causes the wasting of resources and environmental pollution.
Summary of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of for improving existing pier, base
The spreading construction method of pile bearing capacity, the spreading construction method by opening up small pile stake holes inside existing pier, foundation pile, and to
Wherein pour cementitious material formed small pile, while existing pier, foundation pile bottom pour or whirl spraying cementitious material formed small pile
Additional solid reaches to make the additional solid of small pile, small pile and existing pier, foundation pile that induration be collectively formed and improves it
Bearing capacity, socket length meet the purpose of design.
The object of the invention realization is completed by following technical scheme:
It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity, it is characterised in that the spreading construction method packet
It includes following steps: carrying out drilling and forming hole operation in existing pier base, form vertical small pile stake holes；In the small pile stake
Small pile core material is set in hole, and pressure injection or perfusion injection cementitious material form small pile into the small pile stake holes, it is described
Small pile and pier base rubber solidification knot form one.
Drilling depth is more than the elevation of bottom of the existing pier base in drilling and forming hole operation.
The spreading construction method is further comprising the steps of: the injection of bottom pressure injection or whirl spraying injection gelling of Xiang Suoshu pier base
Material forms the common glue in lower part of the additional solid of small pile, the additional solid of small pile and the pier base and the small pile
Congeal into one.
The small pile external reinforcement body is located in rock mass, and the additional solid of small pile is integrated with rock mass consolidation,
The lower end of the small pile is through the additional solid of the small pile and is embedded in rock mass.
The small pile external reinforcement body is located in non-rock-soil layer, and the lower end of the small pile is additional in the small pile
Solid interior.
The pier base is pier or foundation pile.
The cementitious material is one of cement slurry, cement mortar, concrete or grouting material or two or more combinations.
The quantity of the small pile is one or two or more.
The small pile is mini pile or non-mini pile.
The invention has the advantages that making full use of former pier, the foundation pile constructed, small pile is constructed inside it to carry out effectively
Spreading, reinforcement realize carrying, the embedding rock requirement of expected design；The wasting of resources is avoided to the maximum extent, reduces environment dirt
Dye；Continuous productive process, effectively save construction period can be intersected with other construction content realizations when small-sized pile driving construction.
Detailed description of the invention
Fig. 1 is the plan view of multiple existing piers in the present invention, the small pile in foundation pile；
Fig. 2 is the plan view of single existing pier in the present invention, the small pile in foundation pile；
Fig. 3 is the diagrammatic cross-section of single non-embedding rock small pile in the present invention；
Fig. 4 is the diagrammatic cross-section of two non-embedding rock small piles in the present invention；
Fig. 5 is the diagrammatic cross-section of single embedding rock small pile in the present invention；
Fig. 6 is the diagrammatic cross-section of two embedding rock small piles in the present invention.
Specific embodiment
Feature of the invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with
Convenient for the understanding of technical staff of the same trade:
Such as Fig. 1-6, label 1-7 is respectively as follows: cushion cap 1, structural column 2, foundation beam 3, pier base 4, small pile 5, small pile core material in figure
6, the additional solid 7 of small pile.
Embodiment: as shown in figures 1 to 6, the present embodiment more particularly to it is a kind of for improving existing pier, pile bearing capacity connects
Long construction method, which forms small pile stake holes by creeping into inside pier base 4, and pours gelling material thereto
Material forms small pile 5, while pouring cementitious material in 4 bottom of pier base and being formed outside small pile plus solid 7, to make small pile 5, small
Induration is collectively formed in the additional solid 7 of type stake and pier base 4, achievees the purpose that improve its bearing capacity, socket length satisfaction design；
Wherein, small pile 5 includes mini pile and non-mini pile.
As shown in figures 1 to 6, one of the present embodiment is used to improve the spreading construction method packet of existing pier, pile bearing capacity
Include following steps:
(1) design document, the engineering geological data of existing pier base 4 learnt, be familiar with, make an on-the-spot survey construction site, just used
Small pile spreading scheme carries out comprehensive feasibility analysis, proposes specific implementation designing and consuftng report.
(2) original design unit or special designing unit determine specific design document according to consultation report progress Deepen Design,
And complete feasibility study.
(3) according to the design document determined after design demonstration, the property of incorporation engineering geological conditions and existing pier base 4
Suitable construction equipment is selected, further determines that construction parameter, formulates Specific construction scheme.
(4) before Specific construction, scene must first carry out examination bore forming, further determine that the construction parameter of construction site, mend
Charge kind construction embodiment.
(5) according to the position of small pile 5, using the professional tool superstructure to pier base 4 or structures knot on demand
Structure basis, that is, cushion cap 1, structural column 2 or foundation beam 3 drill, and drilling depth must be more than structure original pier base elevation of top with next
Determine range, that is, penetrates superstructure or structure structure basis.
(6) 5 pore-forming operation of small pile is carried out according to construction embodiment, i.e., using pore-forming equipment in existing pier base 4
Pore-forming operation is carried out, the depth of drilling is more than the elevation of bottom of existing pier base 4, so that small pile 5 runs through 4 bottom of pier base, accordingly
It needs to reduce the adverse effect to original structure to the greatest extent in operation process；The diameter and quantity in the hole of small pile 5 are carried according to design
The combined factors such as power, the diameter of pier base 4, surrounding geological environment determine, a hole can be crept into a pier base 4, can also be with
Drilling two, three is multiple, by opening up the hole of different number, diameter, can pour to obtain different number, diameter with the later period
Small pile 5 can flexibly make and change so that the parameters such as the long, bearing capacity of stake of existing pier base 4 be made to meet different design requirements
Become.
(7) after 5 pore-forming operation of small pile meets design requirement, according to design document dispose small pile 5 pile body component,
Pre-buried professional institution, i.e. small pile core material 6, small pile core material 6 can be steel reinforcement cage, be also possible to other metal core materials or non-gold
Belong to core material, to improve the bearing capacity etc. of small pile 5, enhances self structure intensity.
(8) it is poured cementitious material in the drilling into pier base 4, completes pouring for the pile body of small pile 5, cementitious material can be with
It is one of cement slurry, cement mortar, concrete or grouting material etc. or two or more combinations, the side injected using pressure injection
Formula uses perfusion pressurization note mode, keeps 5 structure of small pile to be formed closely knit, intensity is high, and sufficiently extends out, and connects with surrounding structure
It is integrated to enhance its bearing capacity, and the bottom of pier base 4 is equally poured or whirl spraying cementitious material, bottom, small pile in pier base 4
5 lower periphery condenses to form the additional solid 7 of small pile, as a result, the lower part of small pile 5, the lower end of pier base 4 and small pile
Additional 7 three of solid is gelled mutually integral induration, and spreading construction is completed.
(9) pile body of small pile 5 and its additional solid 7 of the small pile in outside are completed to conserve, be detected by design requirement, finally
Obtained induration structural strength is high, bearing capacity is strong, and socket length etc. meets expected design requirement, and corresponding engineering delivery uses.
Pier base 4 in the present embodiment refers to pier or foundation pile, when the additional solid 7 of small pile is located in rock mass, small pile 5
Lower end should run through the additional solid 7 of small pile, end is embedded in rock mass on demand, depth is met the requirements, at this point, small pile 5 is embedding
Rock stake form, wherein the additional solid 7 in rock mass is formed using dedicated high-pressure slip-casting equipment slip casting in rock mass
's；And when the additional solid 7 of small pile is not in rock mass, the lower end of small pile 5, which is then arranged in outside small pile, to be added in solid 7
Portion can effectively improve the stabilization of stake at this point, small pile 5 is non rock rooted pile form not through the additional solid 7 of small pile in this way
Property and bearing capacity etc..
The beneficial effect of the present embodiment is: (1) making full use of former pier, the foundation pile constructed, small pile of constructing inside it
To carry out effective spreading, reinforcement, the requirement such as bearing capacity, embedding rock of expected design is realized；(2) small pile (non-small pile) construction effect
Rate is higher, and can intersect continuous productive process, effectively save construction period with other construction content realizations when its construction；(3) maximum limit
Avoids the wasting of resources, reduces environmental pollution to degree；(4) economic benefit, social benefit are obvious.
Claims (9)
1. a kind of for improving the spreading construction method of existing pier, pile bearing capacity, it is characterised in that the spreading construction method
The following steps are included: carrying out drilling and forming hole operation in existing pier base, vertical small pile stake holes is formed；In the small pile
Small pile core material is set in stake holes, and pressure injection or perfusion injection cementitious material form small pile, institute into the small pile stake holes
It states small pile and pier base rubber solidification knot forms one.
2. according to claim 1 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
Drilling depth is more than the elevation of bottom of the existing pier base in drilling and forming hole operation.
3. according to claim 1 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
Further comprising the steps of in the spreading construction method: cementitious material shape is injected in the injection of bottom pressure injection or whirl spraying of Xiang Suoshu pier base
At the additional solid of small pile, the lower part of the additional solid of small pile and the pier base and the small pile is gelled into one jointly
Body.
4. according to claim 3 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
It is located in rock mass in the small pile external reinforcement body, the additional solid of small pile is integrated with rock mass consolidation, described small
The lower end of type stake is through the additional solid of the small pile and is embedded in rock mass.
5. according to claim 3 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
It is located in non-rock-soil layer in the small pile external reinforcement body, the lower end of the small pile is in the small pile external reinforcement body
Portion.
6. according to claim 1 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
In the pier base be pier or foundation pile.
7. according to claim 1 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
In the cementitious material be one of cement slurry, cement mortar, concrete or grouting material or two or more combinations.
8. according to claim 1 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
In the small pile quantity be one or two or more.
9. according to claim 1 a kind of for improving the spreading construction method of existing pier, pile bearing capacity, feature exists
In the small pile be mini pile or non-mini pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450022.0A CN110374086A (en) | 2019-05-28 | 2019-05-28 | It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910450022.0A CN110374086A (en) | 2019-05-28 | 2019-05-28 | It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110374086A true CN110374086A (en) | 2019-10-25 |
Family
ID=68248863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910450022.0A Pending CN110374086A (en) | 2019-05-28 | 2019-05-28 | It is a kind of for improving the spreading construction method of existing pier, pile bearing capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110374086A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7334966B2 (en) * | 2002-10-28 | 2008-02-26 | Intelligent Engineering (Bahamas) Limited | Reinforcement of tubular structures |
| CN103790190A (en) * | 2014-02-19 | 2014-05-14 | 中铁第四勘察设计院集团有限公司 | Remedying and reinforcing method for precast hollow driven piles |
| CN105625418A (en) * | 2016-02-05 | 2016-06-01 | 云南建工基础工程有限责任公司 | Cast-in-place pile structure provided with cored expanded head jet grouting piles and construction method of cast-in-place pile structure |
| CN105714770A (en) * | 2016-02-05 | 2016-06-29 | 云南建工基础工程有限责任公司 | Reinforced type cast-in-situ bored pile structure and construction method thereof |
-
2019
- 2019-05-28 CN CN201910450022.0A patent/CN110374086A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7334966B2 (en) * | 2002-10-28 | 2008-02-26 | Intelligent Engineering (Bahamas) Limited | Reinforcement of tubular structures |
| CN103790190A (en) * | 2014-02-19 | 2014-05-14 | 中铁第四勘察设计院集团有限公司 | Remedying and reinforcing method for precast hollow driven piles |
| CN105625418A (en) * | 2016-02-05 | 2016-06-01 | 云南建工基础工程有限责任公司 | Cast-in-place pile structure provided with cored expanded head jet grouting piles and construction method of cast-in-place pile structure |
| CN105714770A (en) * | 2016-02-05 | 2016-06-29 | 云南建工基础工程有限责任公司 | Reinforced type cast-in-situ bored pile structure and construction method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191025 |
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| RJ01 | Rejection of invention patent application after publication |