CN109403337A - Basalt fiber reinforced TRD (Top-grade direct-fired) underground continuous wall and construction method thereof - Google Patents
Basalt fiber reinforced TRD (Top-grade direct-fired) underground continuous wall and construction method thereof Download PDFInfo
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- CN109403337A CN109403337A CN201811190333.XA CN201811190333A CN109403337A CN 109403337 A CN109403337 A CN 109403337A CN 201811190333 A CN201811190333 A CN 201811190333A CN 109403337 A CN109403337 A CN 109403337A
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- cement
- trd
- basalt fibre
- mixed
- basalt fiber
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- 229920002748 Basalt fiber Polymers 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 29
- 230000002787 reinforcement Effects 0.000 claims abstract description 23
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 11
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 229940080314 sodium bentonite Drugs 0.000 claims abstract description 7
- 229910000280 sodium bentonite Inorganic materials 0.000 claims abstract description 7
- 238000007580 dry-mixing Methods 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 239000011398 Portland cement Substances 0.000 claims abstract description 3
- 210000002966 serum Anatomy 0.000 claims description 19
- 238000012407 engineering method Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000001467 acupuncture Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 239000011268 mixed slurry Substances 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a basalt fiber reinforced TRD (blast furnace top dead wall) construction method underground continuous wall and a construction method thereof, wherein the basalt fiber reinforced TRD construction method underground continuous wall comprises cement-soil stirring mixed slurry, and the cement-soil stirring mixed slurry comprises the following components in parts by mass: 25% of P.O42.5-grade ordinary portland cement, wherein the water cement ratio is 1.2-1.5; the mixing amount of the sodium bentonite is 100kg/m3The water-cement ratio is 3.3-20; basalt fiber, the mixing amount is 0.4%; the construction method of the basalt fiber reinforced and stirred TRD continuous wall comprises the following steps: mixing basalt fibers and sodium bentonite according to a ratio of 20: 1, carrying out dry mixing; after being uniformly mixed, adding the basalt fiber cement slurry into a cement slurry machine for mixing and stirring to form basalt fiber cement mixed slurry; and finally, pouring the mixed slurry into a pumping aggregate bin, and then performing stirring pile construction according to a normal TRD construction process. After the reinforcement, the tensile strength and the shear strength of the underground continuous wall material are greatly improved, and the hydraulic fracture resistance of the novel underground continuous wall under a high water head is effectively improved.
Description
Technical field
The invention belongs to geotechnical engineering pattern foundation pit supporting structure fields, and in particular to a kind of basalt fibre reinforcement TRD engineering method underground
Diaphragm wall and its construction method.
Background technique
Traditional diaphram wall is constructed using framing, is the weak link of sealing at Construction Joint, working procedure mostly with week
Phase is long, if cannot be combined into one with underground structure side wall, cost is excessively high, this also constrains what it was applied in general base pit engineering
Restriction condition.TRD engineering method changes conventional soil cement stirring wall as equal thickness cement mixing wall Choice of Construction Technique of Water Stop Curtain
Single solum horizontal stirring mode, but the vertical stirring mode of different soil is realized by cutting box, have construction depth is big (can
Up to 60m), adapt to stratum is wide, mixing effect is good, seamless connection high at wall precision, suitable for height-limited operating environment.
Require impervious barrier should qualified barrier properties in the curtain leakage preventing structure of hypertonic pressure and high-moisture silt soil strata
Can, while structure being required to have certain non-deformability, guarantee that hydraulic fracture effect does not occur inside impervious barrier.It is expected that by
Soil cement mixes reinforcement material to improve the intensity of soil cement, and raising prevents hydraulic fracture and non-deformability.It is stirred in reinforcement
At in wall construction technology, routinely under the conditions of that basalt fibre and cement slurry are directly stirred mixed effect is unsatisfactory,
Basalt fibre reunion is distributed in the form of sheets, is easily precipitated, and fibre bundle is unsuitable fully dispersed, the basalt fibre that is formed in this way and
The mixed serum of cement slurry is pumped directly to deep mixer and carries out bore forming, and the sheet basalt fibre of precipitating easily concentrates on
Partial-depth position in wall, cut agitator tank stirring action can not make basalt fibre it is fully dispersed uniformly in wall not
With depth position；And last precipitating and the basalt fibre concentrated easily block and pump out slurry mouth, cause construction operation without
Method is normally carried out.All preparation methods and rational proportion for only changing basalt fiber cement soil mixed serum, could ensure
Nodule or precipitating do not occur in mixed serum for basalt fibre, to just can guarantee that basalt fibre is equably stirred to ground
In lower diaphragm wall body, basalt fibre tensile characteristics can be just given full play to, improve the anti-hydraulic fracture and resistance of diaphram wall
Shape ability.
Summary of the invention
The present invention provides a kind of basalt fibre reinforcement TRD engineering method diaphram wall and its construction methods, solve ground
Lower diaphragm wall non-deformability is weak, Yi Fasheng hydraulic fracture and Wu Yan fiber cannot be uniformly dispersed in the different depth portion of wall
The problem of position.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: a kind of basalt fibre reinforcement TRD work
Method diaphram wall, which is characterized in that including Soil-cement mixed serum, the Soil-cement mixed serum is according to quality
The component of part meter includes: P.O42.5 grades of ordinary portland cements, volume 25%, the ratio of mud 1.2~1.5；Sodium bentonite is mixed
Measure 100kg/m3, the ratio of mud 3.3~20；Basalt fibre, volume 0.4%.
Further, the basalt fibre is the pencil monofilament that fibre length is 6mm~24mm.
Further, it is 12mm that the basalt fibre, which selects fibre length,.
A kind of construction method of basalt fibre reinforcement TRD engineering method diaphram wall, which is characterized in that including following step
It is rapid:
S1, basalt fibre is mixed according to 20:1 mass parts than carrying out dry mixing with sodium bentonite；
S2, it is to be mixed uniformly after, cement slurry is added and carries out mixing mix, forms the finely dispersed basalt fibre of fiber and cement
Mixed serum is starched, mixed serum is poured into pumping aggregate bin；
S3, according to the design drawing of TRD diaphram wall, surveying setting-out；
After S4, cell wall reinforce center line setting-out, Reinforcement Measures are carried out to place, so that place is met mechanical equipment and ground is held
Carry the requirement of power, it is ensured that the stability of stake machine；
S5, hang that stake machine is carried out after provided box is in place；
S6, cutting box is hung paragraph by paragraph into pre-buried cave with crane, is fixed using supporting table；It sets at TRD host mobility to pre-buried acupuncture point
Cutting box is connected, host returns again to predetermined construction location progress cutting box and voluntarily squeezes into excavation to projected depth；
S7, it excavates in advance: mixed serum being injected as liquid, cutting box is excavated by mudjack and is pushed ahead, excavate and loosen original soil
Layer, cutting grooving a trip；Withdraw excavation: according to operation work efficiency, after the completion of the grooving of a trip, cutting box withdraw again to
Cut starting point；Stir at wall: cutting box exchanges slurries after withdrawing to cutting starting point, and it is solid to inject mixed serum by mudjack
Change, cutting box is pushed ahead and is mixed with liquid mixing mud is excavated, and uniform thickness Soil-cement Wall is formed.
Further, it in the step S1 and S2, is mixed by rotary mixer.
Further, in the step S4, Reinforcement Measures include carrying out laying steel plate to construction site.
Further, in the step S2, the ratio of mud of cement slurry is 0.5.
Advantageous effects of the invention: the present invention passes through the rational proportion of Soil-cement mixed serum, water is realized
Soil is mixed with the reinforcement of basalt fibre, its tension of the soil cement after reinforcement is remarkably reinforced with shearing strength, so that profound
The fiber and steel bar reinforced TRD engineering method diaphram wall of Wu Yan resists waterpower under high water head relative to traditional TRD cement-earth underground continuous wall
It cleaves and is greatly improved with the ability of resistance to deformation；By improve mixed serum preparation method, make military rock fiber can be uniformly dispersed in
The different depth position of wall.
Specific embodiment
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
1, the construction method of basalt fibre reinforcement TRD engineering method diaphram wall, comprising the following steps:
Step 1: it is mixed to be carried out dry mixing using rotary mixer according to 20:1 mass parts ratio for basalt fibre and sodium bentonite
It closes；
Step 2: the cement slurry that the ratio of mud 0.5 is added carries out mixing mix using rotary mixer after mix is uniform, formed
The finely dispersed basalt fibre of fiber and cement mixing slurries pour into mixed serum in pumping aggregate bin；
Step 3: according to the design drawing of TRD diaphram wall, surveying setting-out；
Step 4: carrying out being laid with the Reinforcement Measures such as steel plate to construction site, it is ensured that construction after cell wall reinforces center line setting-out
Place meets requirement of the mechanical equipment to foundation bearing capacity, it is ensured that the stability of stake machine；
Step 5: hanging provided box；
Step 6: stake machine is in place；
Step 7: being hung cutting box into pre-buried cave paragraph by paragraph with crane, fixed using supporting table；TRD host mobility is to pre-buried cave
Position connects cutting box, and host returns again to predetermined construction location progress cutting box and voluntarily squeezes into excavation to projected depth；
Step 8: excavating in advance: injecting mixed serum as liquid, cutting box is excavated by mudjack and push ahead, excavate and loosen
Native soil layer, cutting grooving a trip.Withdraw excavation: according to operation work efficiency, after the completion of the grooving of a trip, cutting box returns again
Withdraw cutting starting point to.Stir at wall: cutting box exchanges slurries after withdrawing to cutting starting point, injects mixing slurry by mudjack
Liquid solidification, cutting box are pushed ahead and are mixed with liquid mixing mud is excavated, and uniform thickness Soil-cement Wall is formed.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of basalt fibre reinforcement TRD engineering method diaphram wall, which is characterized in that including Soil-cement mixed serum,
The Soil-cement mixed serum includes: P.O42.5 grades of ordinary portland cements, volume according to the component of mass parts meter
25%, the ratio of mud 1.2~1.5；Sodium bentonite, volume 100kg/m3, the ratio of mud 3.3~20；Basalt fibre, volume
0.4%。
2. a kind of basalt fibre reinforcement TRD engineering method diaphram wall according to claim 1, which is characterized in that described
Basalt fibre is the pencil monofilament that fibre length is 6mm~24mm.
3. a kind of basalt fibre reinforcement TRD engineering method diaphram wall according to claim 2, which is characterized in that described
It is 12mm that basalt fibre, which selects fibre length,.
4. a kind of construction party of basalt fibre reinforcement TRD engineering method diaphram wall according to any one of claims 1 to 3
Method, which comprises the following steps:
S1, basalt fibre is mixed according to 20:1 mass parts than carrying out dry mixing with sodium bentonite；
S2, it is to be mixed uniformly after, cement slurry is added and carries out mixing mix, forms the finely dispersed basalt fibre of fiber and cement
Mixed serum is starched, mixed serum is poured into pumping aggregate bin；
S3, according to the design drawing of TRD diaphram wall, surveying setting-out；
After S4, cell wall reinforce center line setting-out, Reinforcement Measures are carried out to place, so that place is met mechanical equipment and ground is held
Carry the requirement of power, it is ensured that the stability of stake machine；
S5, hang that stake machine is carried out after provided box is in place；
S6, cutting box is hung paragraph by paragraph into pre-buried cave with crane, is fixed using supporting table；It sets at TRD host mobility to pre-buried acupuncture point
Cutting box is connected, host returns again to predetermined construction location progress cutting box and voluntarily squeezes into excavation to projected depth；
S7, it excavates in advance: mixed serum being injected as liquid, cutting box is excavated by mudjack and is pushed ahead, excavate and loosen original soil
Layer, cutting grooving a trip；Withdraw excavation: according to operation work efficiency, after the completion of the grooving of a trip, cutting box withdraw again to
Cut starting point；Stir at wall: cutting box exchanges slurries after withdrawing to cutting starting point, and it is solid to inject mixed serum by mudjack
Change, cutting box is pushed ahead and is mixed with liquid mixing mud is excavated, and uniform thickness Soil-cement Wall is formed.
5. a kind of construction method of basalt fibre reinforcement TRD engineering method diaphram wall according to claim 4, feature
It is, in the step S1 and S2, is mixed by rotary mixer.
6. a kind of construction method of basalt fibre reinforcement TRD engineering method diaphram wall according to claim 4, feature
It is, in the step S4, Reinforcement Measures include carrying out laying steel plate to construction site.
7. a kind of construction method of basalt fibre reinforcement TRD engineering method diaphram wall according to claim 4, feature
It is, in the step S2, the ratio of mud of cement slurry is 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190333.XA CN109403337A (en) | 2018-10-12 | 2018-10-12 | Basalt fiber reinforced TRD (Top-grade direct-fired) underground continuous wall and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811190333.XA CN109403337A (en) | 2018-10-12 | 2018-10-12 | Basalt fiber reinforced TRD (Top-grade direct-fired) underground continuous wall and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109403337A true CN109403337A (en) | 2019-03-01 |
Family
ID=65467784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811190333.XA Pending CN109403337A (en) | 2018-10-12 | 2018-10-12 | Basalt fiber reinforced TRD (Top-grade direct-fired) underground continuous wall and construction method thereof |
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| CN (1) | CN109403337A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424409A (en) * | 2019-08-16 | 2019-11-08 | 上海建工集团股份有限公司 | A kind of foundation pit enclosure method being adapted to high water level low clearance |
| CN111021338A (en) * | 2019-12-30 | 2020-04-17 | 深圳市市政设计研究院有限公司 | Occlusive pile and construction method thereof |
| CN111042249A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Construction method of ultra-deep equal-thickness cement-soil mixing wall under complex geological condition |
| CN112299796A (en) * | 2020-12-01 | 2021-02-02 | 宁波中淳高科股份有限公司 | Wall pile inter-pile grouting material for building envelope and construction method thereof |
| CN112707692A (en) * | 2021-01-06 | 2021-04-27 | 上海智平基础工程有限公司 | Cutting fluid for TRD construction, preparation method and construction method |
| CN115286311A (en) * | 2022-06-30 | 2022-11-04 | 西南大学 | Seepage-proof anti-cracking cement mortar material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424409A (en) * | 2019-08-16 | 2019-11-08 | 上海建工集团股份有限公司 | A kind of foundation pit enclosure method being adapted to high water level low clearance |
| CN111042249A (en) * | 2019-12-27 | 2020-04-21 | 上海建工四建集团有限公司 | Construction method of ultra-deep equal-thickness cement-soil mixing wall under complex geological condition |
| CN111021338A (en) * | 2019-12-30 | 2020-04-17 | 深圳市市政设计研究院有限公司 | Occlusive pile and construction method thereof |
| CN112299796A (en) * | 2020-12-01 | 2021-02-02 | 宁波中淳高科股份有限公司 | Wall pile inter-pile grouting material for building envelope and construction method thereof |
| CN112707692A (en) * | 2021-01-06 | 2021-04-27 | 上海智平基础工程有限公司 | Cutting fluid for TRD construction, preparation method and construction method |
| CN115286311A (en) * | 2022-06-30 | 2022-11-04 | 西南大学 | Seepage-proof anti-cracking cement mortar material and preparation method thereof |
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Application publication date: 20190301 |
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