CN106884443A - The construction method for grouting reinforcement that foundation bottom is come to nothing - Google Patents
The construction method for grouting reinforcement that foundation bottom is come to nothing Download PDFInfo
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- CN106884443A CN106884443A CN201710143253.8A CN201710143253A CN106884443A CN 106884443 A CN106884443 A CN 106884443A CN 201710143253 A CN201710143253 A CN 201710143253A CN 106884443 A CN106884443 A CN 106884443A
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- China
- Prior art keywords
- grouting
- slip casting
- basis
- construction
- pipe
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0023—Slurry
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- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to the construction method for grouting reinforcement that a kind of foundation bottom is come to nothing, according to job specfication requirement, ground line is released in measurement, and releasing needs to pick the size that chisel removes basis；Surface of base cutting is carried out, the new equipment basis reconstructed according to operation normal construction；Grouting Pipe is made, is buried as requested, carry out slip casting protection of pipe；Earthwork compaction in layers backfill；Proceed basic Superstructure Construction, to crack under the original basis below whole closing basis, cave in, the defect area such as hollowing carries out slip casing by pressure；Cut to exposing the unnecessary Grouting Pipe of surface of base, blocked, surface reconditioning.The construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing, basic grouting behind shaft or drift lining of first constructing, foundation construction can be accelerated；Confined pressure slip casting, significantly, quality is guaranteed for slip casting effect；Avoid structure construction and grouting with plunger cross-operation；Technological process is simple, and workman is easily operated；Injecting paste material ground materials, save construction cost, improve efficiency of construction.
Description
Technical field
It is to be related to a kind of foundation bottom to take off specifically the present invention relates to a kind of construction method of concrete foundation treatment
Empty construction method for grouting reinforcement.
Background technology
At present, the limitation with country to some production capacity surplus projects, advocates low-carbon environment-friendly, energy-saving and emission-reduction, green energetically
Construct, therefore numerous items have to carry out technique adjustment or upgrading, it is necessary to some the equipment bases on production line
Plinth carries out technological transformation, meets existing process requirement.During basic technological transformation, often a part is to remove original equipment basis top,
Take bar planting or be attached mode with original basis bar splicing and reconstruct, and the deeper basis of many generally requires whole dismountings
Drill through（Thoroughly）Original equipment sole plate, i.e., open up reserved construction hole equivalent in original basis upper plate, new basis of constructing again,
It is connected to form new Equipment Foundations with original basis again.But picking when chisel removes large equipment base carried out using machinery
（Hydraulic pick or pneumatic pick, electric pick etc.）, the vibrations at this moment producing often cause near surrounding that ground beneath the earthwork occurs and caves in, splits
The phenomenons such as seam, the bottom of foundation come to nothing, hollowing, and vibrations will also result in surrounding soil body landslide, sedimentation in elementary process is transformed
Situations such as, the particularly soil property such as such as mud is in bad order, even more serious when level of ground water is higher.When new foundation construction is finished back
The earthwork filled out can not cause that original basis bottom is closely knit, cannot also tamp, even if foundation ditch has gib measure, the soil body also can be right
Supporting construction produces lateral pressure, causes sole plate to come to nothing, and it is safe to cause foundation bearing capacity deficiency to have influence on using for structure.
The content of the invention
For above-mentioned deficiency of the prior art, the present invention provides a kind of technological process simply, and easy construction improves construction
Efficiency, reduces construction cost, it is ensured that the construction method for grouting reinforcement that the foundation bottom of construction quality is come to nothing.
The technical solution used in the present invention is：
The construction method for grouting reinforcement that a kind of foundation bottom is come to nothing, comprises the following steps：
The first step：According to design drawing and job specfication requirement, ground line is released in measurement, needs is then released in original basis and is picked
Dig the size removed；
Second step：Cut according to pay-out rule little progress row surface of base with emery wheel or toothless saw, basis is entered with mechanical-hydraulic pick
Row protective demolition；
3rd step：The new equipment basis reconstructed according to operation normal construction；
4th step：Equipment Foundations health, form removable cleaning；
5th step：Grouting Pipe is made, is buried as requested, carry out slip casting protection of pipe；
6th step：Earthwork compaction in layers backfill；
7th step：Proceed basic Superstructure Construction, basis is carried out into overall company with original equipment basis dismounting face on request
Connect closure；
8th step：To crack under the original basis below whole closing basis, cave in, the defect area such as hollowing carries out slip casing by pressure；
9th step：Cut to exposing the unnecessary Grouting Pipe of surface of base, blocked, surface reconditioning.
The slip casing by pressure uses cement mortar.
The Grouting Pipe upper end is connected region welding steel seal ring with basis.
The slip casting comprises the following steps：
1st, pump line is connected；
Grouting pump one end is connected with Grouting Pipe, is fixed with thin wire and Grouting Pipe and is tightened, Grouting Pipe jumps during preventing slip casting
Support；The other end and mixer lower section pulp storage tank are connected, and stretch into pipe port dense mesh or screen pack in pulp storage tank and encase；
2nd, cement mortar is made；
Mechanical agitation is carried out with mixer, the ratio of mud is controlled 1:1~0.65:Between 1；
First toward a certain amount of water is added in mixer, cement is subsequently poured into, finally adds water order, 3-5 bags of cement is stirred every time, stirred
Time control is mixed at 5 minutes or so；
3rd, turn on pump starts slip casting；
Start grouting pump and start slip casting, grouting pump is adjusted to low grade when starting slip casting, be adjusted to for grouting pump when smooth by slurries flowing
Top grade, notes observing the pressure of slip casting table and the torsional deformation of slip casting flexible pipe；
4th, voltage stabilizing, end slip casting；
Gage pressure tends towards stability and reaches design pressure, terminates slip casting.Found during slip casting around adjacent hole or injected hole
Hole and crack have slurries to overflow, and to block in time, and closure stops slip casting without effect.First time grouting serous fluid will be answered during initial set
Carry out second or third time mends slurry.
Present invention beneficial effect compared with the prior art：
The construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing, rear bored grouting is not used and Grouting Pipe is buried in advance to original
, to fill, permeate and the mode such as compacted, drive away ground by slip casing by pressure in sole plate cave in loosening, crack of phenomenon, the soil body of coming to nothing
Moisture and gas in slabbing gap or between soil particle, and its position is filled, the soil body is cemented to an entirety after hardening, so that
Ground is reinforced, in addition under the closing of whole sole plate（Equivalent under enclosed environment）Slip casing by pressure so that slip casting effect
Greatly improve.Secondly Grouting Pipe tip is solved because working space is narrow in also can be inserted into lower section soil layer, and section is removed not in basis
Neatly, the backfill earthwork cannot cal rolling it is closely knit and roll less than region so that whole the old and new basis surrounding slip casting hardening
A veneer for closing is formed afterwards, serves water-stop curtain effect.
The construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing, basic grouting behind shaft or drift lining of first constructing, foundation construction can add
Hurry up；Confined pressure slip casting, significantly, quality is guaranteed for slip casting effect；Avoid structure construction and grouting with plunger cross-operation；Technique
Flow is simple, and workman is easily operated；Injecting paste material ground materials, save construction cost, improve efficiency of construction.
Brief description of the drawings
The structural representation of the construction method for grouting reinforcement that Fig. 1 foundation bottoms of the present invention are come to nothing；
Fig. 2 is the original basis generalized section of the construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing；
Fig. 3 is that the original basis of the construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing remove earth excavation generalized section；
Fig. 4 is the basis embedded generalized section of reconstruction Grouting Pipe of the construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing；
Fig. 5 is the grouting and reinforcing zone profile schematic diagram of the construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing.
Critical piece symbol description in accompanying drawing：
In figure：
1st, newly-built basic 2, original basis 3, blinding layer 4, connection reinforcing bar 5, Grouting Pipe 6, steel plate water-stopping ring 7,
Slurries perforation 8, injection slurry
9th, bottom foundation soil
10th, original basis base plate comes to nothing region, loose region, crack area, settling zone
11st, unreal region, narrow space region are backfilled.
Specific embodiment
Referring to the drawings and embodiment the present invention will be described in detail：
Knowable to accompanying drawing 1-5,
The construction method for grouting reinforcement that a kind of foundation bottom is come to nothing,
The first step：According to design drawing and job specfication requirement, ground line is released in measurement, needs is then released in original basis and is picked
Dig the size removed；
Second step：Cut according to pay-out rule little progress row surface of base with emery wheel or toothless saw, use mechanical-hydraulic pick（Hydraulic hammer or
Pneumatic pick）Protective demolition is carried out to basis；Whether reinforcing bar in basis is retained according to design requirement, it is such as direct with gas welding without reservation
Slice off, manual cleaning removes building waste in surface of base and foundation ditch；
3rd step：The new equipment basis reconstructed according to operation normal construction；I.e.：Earth excavation → bed course → reinforcing bar colligation → template
Closing → concreting；
4th step：Equipment Foundations health, form removable cleaning；
5th step：Grouting Pipe is made, is buried as requested, carry out slip casting protection of pipe；
Grouting Pipe can use common 4 steel splitting pipe：Φ22mm；According to the parameter determination slip casting length of tube such as original basis bottom depth, will
Grouting Pipe toothless saw cuts into certain length, and tip sledgehammer pounds tapered, and the sophisticated certain distance of distance starts up spacing
Surrounding sets Ф 5mm slip casting holes；Upper end is connected region with basis（In basis or terrace）Welding steel seal ring.Grouting Pipe
With machinery（Or sledgehammer）Squeeze into need original basis bottom to be processed soil layer；
6th step：Basic surrounding cubic metre of earth compaction in layers backfill；
7th step：Proceed basic Superstructure Construction, basis is carried out into overall company with original equipment basis dismounting face on request
Connect closure；
8th step：To whole closing basis（Ground）Crack under following original basis, cave in, the defect area such as hollowing carries out pressure
Slip casting, improving improves foundation bearing capacity.
Slip casting step：
1st, pump line is connected；
By grouting pump one end and steel（Penetrate）Pipe is connected, tightened with thin wire and steel pipe colligation, and Grouting Pipe jumps during preventing slip casting
Support；The other end and mixer lower section pulp storage tank are connected, and stretch into pipe port dense mesh or screen pack in pulp storage tank and encase；
2nd, cement mortar is made；
Mechanical agitation is carried out with mixer, the ratio of mud is controlled 1:1~0.65:Between 1；
First toward a certain amount of water is added in mixer, cement is subsequently poured into, adds water order, 3-5 bags of cement is stirred every time, during stirring
Between control at 5 minutes or so；
Cement uses 32.5# Portland cements；
3rd, turn on pump starts slip casting；
Start grouting pump and start slip casting, grouting pump is adjusted to low grade when starting slip casting, be adjusted to for grouting pump when smooth by slurries flowing
Top grade, notes observing the pressure of slip casting table and the torsional deformation of slip casting flexible pipe；
4th, voltage stabilizing, end slip casting
Gage pressure tends towards stability and reaches design pressure, terminates slip casting.Found during slip casting around adjacent hole or injected hole
Hole and crack have slurries to overflow, and to block in time, and closure stops slip casting without effect.First time grouting serous fluid will be answered during initial set
Carry out second or third time mends slurry；
9th step：Cut to exposing the unnecessary Grouting Pipe of surface of base, blocked, surface reconditioning
Technological process：Surveying setting-out（Pick chisel line in basis）→ basic cutting, dismounting, cleaning → newly-built foundation construction → health, mould
Plate dismounting → Grouting Pipe is made, embedded → backfilling of earthwork → top foundation structure construction and original basis connection closing → pressure are noted
Slurry → slip casting terminates, cutting is blocked.
It is basic grouting behind shaft or drift lining of first constructing, foundation construction can be accelerated；Confined pressure slip casting, slip casting effect is notable, quality
It is guaranteed；Carried out after slip casting, it is to avoid structure construction and grouting with plunger cross-operation；Technological process is simple, and workman is easily operated；Note
Pulp material（Steel pipe, cement）Gather materials on the spot, easily buying, cost-effective.
The construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing, rear bored grouting is not used and Grouting Pipe is buried in advance
Cave in loosening, crack of phenomenon, the soil body of being come to nothing to original basis base plate, to fill, permeate and the mode such as compacted, is driven by slip casing by pressure
The moisture and gas in the crack of stratum or between soil particle are walked, and fills its position, the soil body is cemented to an entirety after hardening, from
And ground is reinforced, in addition under the closing of whole sole plate（Equivalent under enclosed environment）Slip casing by pressure so that slip casting
Effect is greatly improved.Secondly Grouting Pipe tip is solved because working space is narrow in also can be inserted into lower section soil layer, and basis is removed disconnected
Face is irregular, the backfill earthwork cannot cal rolling it is closely knit and roll less than region so that the surrounding slip casting of whole the old and new basis
A veneer for closing is formed after hardening, water-stop curtain effect is served.
The construction method for grouting reinforcement that foundation bottom of the present invention is come to nothing, basic grouting behind shaft or drift lining of first constructing, foundation construction can add
Hurry up；Confined pressure slip casting, significantly, quality is guaranteed for slip casting effect；Avoid structure construction and grouting with plunger cross-operation；Technique
Flow is simple, and workman is easily operated；Injecting paste material ground materials, save construction cost, improve efficiency of construction.
The above, is only presently preferred embodiments of the present invention, not makees any formal to structure of the invention
Limitation.Every any simple modification, equivalent variations and modification made to above example according to technical spirit of the invention,
Belong in the range of technical scheme.
Claims (4)
1. the construction method for grouting reinforcement that a kind of foundation bottom is come to nothing, it is characterised in that
The first step：According to design drawing and job specfication requirement, ground line is released in measurement, needs is then released in original basis and is picked
Dig the size removed；
Second step：Cut according to pay-out rule little progress row surface of base with emery wheel or toothless saw, basis is entered with mechanical-hydraulic pick
Row protective demolition；
3rd step：The new equipment basis reconstructed according to operation normal construction；
4th step：Equipment Foundations health, form removable cleaning；
5th step：Grouting Pipe is made, is buried as requested, carry out slip casting protection of pipe；
6th step：Earthwork compaction in layers backfill；
7th step：Proceed basic Superstructure Construction, basis is carried out into overall company with original equipment basis dismounting face on request
Connect closure；
8th step：To crack under the original basis below whole closing basis, cave in, the defect area such as hollowing carries out slip casing by pressure；
9th step：Cut to exposing the unnecessary Grouting Pipe of surface of base, blocked, surface reconditioning.
2. the construction method for grouting reinforcement that foundation bottom is come to nothing according to claim 1, it is characterised in that：The slip casing by pressure
Using cement mortar.
3. the construction method for grouting reinforcement that foundation bottom is come to nothing according to claim 1, it is characterised in that：In the Grouting Pipe
Hold the region welding steel seal ring that is connected with basis.
4. the construction method for grouting reinforcement that foundation bottom is come to nothing according to claim 1, it is characterised in that：The slip casting includes
Following steps：
1st, pump line is connected；
Grouting pump one end is connected with Grouting Pipe, is fixed with thin wire and Grouting Pipe and is tightened, Grouting Pipe jumps during preventing slip casting
Support；The other end and mixer lower section pulp storage tank are connected, and stretch into pipe port dense mesh or screen pack in pulp storage tank and encase；
2nd, cement mortar is made；
Mechanical agitation is carried out with mixer, the ratio of mud is controlled 1:1~0.65:Between 1；
First toward a certain amount of water is added in mixer, cement is subsequently poured into, finally added water order again, and 3-5 bags of cement is stirred every time,
Mixing time is controlled at 5 minutes or so；
3rd, turn on pump starts slip casting；
Start grouting pump and start slip casting, grouting pump is adjusted to low grade when starting slip casting, be adjusted to for grouting pump when smooth by slurries flowing
Top grade, notes observing the pressure of slip casting table and the torsional deformation of slip casting flexible pipe；
4th, voltage stabilizing, end slip casting；
Gage pressure tends towards stability and reaches design pressure, terminates slip casting；
Find that hole and crack there are slurries to overflow around adjacent hole or injected hole, block in time during slip casting, block without effect
Stop slip casting；
First time grouting serous fluid will should be carried out second or third time benefit slurry during initial set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710143253.8A CN106884443B (en) | 2017-03-11 | 2017-03-11 | The construction method for grouting reinforcement that foundation bottom is come to nothing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710143253.8A CN106884443B (en) | 2017-03-11 | 2017-03-11 | The construction method for grouting reinforcement that foundation bottom is come to nothing |
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| CN106884443A true CN106884443A (en) | 2017-06-23 |
| CN106884443B CN106884443B (en) | 2019-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680722A (en) * | 2019-01-24 | 2019-04-26 | 江苏南通三建集团股份有限公司 | The construction method for setting external building access port is directly stayed on outer wall of basement body |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168957A (en) * | 2007-10-01 | 2008-04-30 | 于心然 | Bridge brow plate emptying shallow layer grouting reinforcement technique |
| CN101994325A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing resistance of existing building rigid foundation |
| CN101994324A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing capacity of existing building rigid foundation |
| CN203487547U (en) * | 2013-09-26 | 2014-03-19 | 中国化学工程第六建设有限公司 | Equipment foundation reinforcing device |
| CN103741963A (en) * | 2014-01-06 | 2014-04-23 | 北京筑福国际工程技术有限责任公司 | Industrial plant foundation strengthening method |
| CN105604340A (en) * | 2015-12-28 | 2016-05-25 | 长春工程学院 | Old house floor adding modifying method capable of improving seismic capacity and prolonging safe life |
| KR20160107431A (en) * | 2015-03-04 | 2016-09-19 | 윤종현 | Underwater structure construction apparatus and construction method |
-
2017
- 2017-03-11 CN CN201710143253.8A patent/CN106884443B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101168957A (en) * | 2007-10-01 | 2008-04-30 | 于心然 | Bridge brow plate emptying shallow layer grouting reinforcement technique |
| CN101994325A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing resistance of existing building rigid foundation |
| CN101994324A (en) * | 2010-12-22 | 2011-03-30 | 建研地基基础工程有限责任公司 | Reinforced foundation and method for improving bending and shearing capacity of existing building rigid foundation |
| CN203487547U (en) * | 2013-09-26 | 2014-03-19 | 中国化学工程第六建设有限公司 | Equipment foundation reinforcing device |
| CN103741963A (en) * | 2014-01-06 | 2014-04-23 | 北京筑福国际工程技术有限责任公司 | Industrial plant foundation strengthening method |
| KR20160107431A (en) * | 2015-03-04 | 2016-09-19 | 윤종현 | Underwater structure construction apparatus and construction method |
| CN105604340A (en) * | 2015-12-28 | 2016-05-25 | 长春工程学院 | Old house floor adding modifying method capable of improving seismic capacity and prolonging safe life |
Non-Patent Citations (2)
| Title |
|---|
| 王鹏: "《某转炉基础地基处理及基坑支护施工技术》", 《施工技术》 * |
| 赵志民: "《某厂房改造工程新增柱和设备基础与既有基础之间的地基关系处理》", 《工程质量》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109680722A (en) * | 2019-01-24 | 2019-04-26 | 江苏南通三建集团股份有限公司 | The construction method for setting external building access port is directly stayed on outer wall of basement body |
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| Publication number | Publication date |
|---|---|
| CN106884443B (en) | 2019-01-18 |
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