CN104589495B - A kind of manufacture method of seismic crack concrete square pile - Google Patents
A kind of manufacture method of seismic crack concrete square pile Download PDFInfo
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- CN104589495B CN104589495B CN201410730742.XA CN201410730742A CN104589495B CN 104589495 B CN104589495 B CN 104589495B CN 201410730742 A CN201410730742 A CN 201410730742A CN 104589495 B CN104589495 B CN 104589495B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Piles And Underground Anchors (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses the manufacture method of a kind of seismic crack concrete square pile, its innovative point is: includes the design concrete mixing ratio carried out successively, pour into a mould, wear muscle, stretch-draw, centrifugal forming and high-pressure curing step, described stretch-draw step uses sublevel segmentation gradient stretch-draw, first carries out natural curing step before high-pressure curing step.The manufacture method of the seismic crack concrete square pile of the present invention, including carry out successively design concrete mixing ratio, first cast, after wear muscle, stretch-draw, centrifugal forming and the sequencing of high-pressure curing step, stretch-draw step uses sublevel segmentation gradient stretch-draw, natural curing step is first carried out before high-pressure curing step, the bulk strength of square pile can be greatly improved, reducing the link cost of pile top assembly, that improves square pile penetrates ability.
Description
Technical field
The present invention relates to the manufacture method of a kind of seismic crack concrete square pile, belong to the realm of building construction.
Background technology
Precast concrete square pile except harbor work basis use pre-tensioning system technique pre-stressed concrete hollow square stake (inner chamber mainly uses preset inflated rubber mode, have two kinds of section forms of square or rectangular) outward, most of foundation engineerings mainly use manual work non-prestressed, vibro-moulding process is in the majority, concrete uses natural curing, and structure mostly is solid square sectional.This precast square pile is primarily present lower column defects: 1. production efficiency is low, and the production cycle is long；2. product quality is unstable, more containing pore in hardened concrete structure cross section；3. concrete strength is low, and bearing capacity of pile fails to give full play to；4. Concrete in Natural curing time is long, produces floor space big.
Pretensioning prestressed concrete hollow square pile is with deformed bar and high performance concrete as main material, uses pretensioned prestressing centrifugal molding process, and the one hollow square concrete prefabricated element made through steam curing.Such as Chinese patent CN 103317596 A discloses a kind of pretensioned prestressing and is centrifuged the manufacture method of corrosion resistant concrete hollow square pile, it is characterised in that step includes:
1) design the match ratio of concrete, and prepare corrosion resistant concrete by this match ratio；
2) pile top position and pile body position placing concrete simultaneously；
3) according to different corrosive environments and classification, the end plate of differently configured requirement of shelter, and carry out different process assembling；
4) according to different size pile-type and environment category requirement, select pile top type, and assemble different pile top dieplate；
5) prestressed stretch-draw, centrifugal forming, steam curing；
6) put, the demoulding, autoclave curing, obtain finished product.
Its advantage is that the pretensioned prestressing using above-mentioned technological process to prepare is centrifuged the corrosion-resistant of corrosion resistant concrete hollow square pile and endurance quality is obviously improved, and the service life in corrosive medium and environment is greatly prolonged.Its shortcoming is complex manufacturing, and making is wasted time and energy, and production cost is higher.
Summary of the invention
Present invention aims to deficiency of the prior art, it is provided that the manufacture method of a kind of seismic crack concrete square pile, it is possible to be greatly improved the bulk strength of square pile, reduce the link cost of pile top assembly, that improves square pile penetrates ability.
For solving above-mentioned technical problem, the technical solution used in the present invention is: the manufacture method of a kind of seismic crack concrete square pile, its innovative point is: includes the design concrete mixing ratio carried out successively, pour into a mould, wear muscle, stretch-draw, centrifugal forming and high-pressure curing step, described stretch-draw step uses sublevel segmentation gradient stretch-draw, first carries out natural curing step before high-pressure curing step.
Further, described design concrete mixing ratio is specially 125 parts～135 parts of stone, yellow ground 350 parts～480 parts, water reducer 98 parts～102 parts, cement 210 parts～250 parts, antidetonation compound 34 parts～45 parts and 20 parts～80 parts of anticracking polymer fiber mixture.
Further, each raw material weight component during preparation of described antidetonation compound is: the industrial aluminum sulphate of 16～26 parts, the sodium lauryl sulphate of 1～5 part, the silicon ash of 18～35 parts, the anhydrite of 20～38 parts, the sulfoaluminate clinker of 14～25 parts.
Further, described anticracking polymer fiber mixture preparation raw material component and POLYPROPYLENE GLYCOL fiber that weight portion is 70～80 parts thereof and the polybutene fiber of 20～30 parts.
Further, described sublevel segmentation gradient stretch-draw step is particularly as follows: carry out sublevel segmentation stretch-draw by carrying out the main muscle after wearing muscle step, first 5～8% to main muscle stretch-draw to stretch-draw dynamics, then pitch fixes 10～12min, unplugs pitch the most again, the 10～20% of the main muscle of stretch-draw to stretch-draw dynamics, pitch fixes 3～5min, finally, other main muscle of stretch-draw, to the 100～110% of stretch-draw dynamics, carry out grappling.
Further, described natural curing step is in atmospheric conditions, and controlling curing time is 2～4h, and curing temperature is 80～100 DEG C.
Beneficial effects of the present invention is as follows:
(1) manufacture method of the seismic crack concrete square pile of the present invention, including carry out successively design concrete mixing ratio, first cast, after wear muscle, stretch-draw, centrifugal forming and the sequencing of high-pressure curing step, stretch-draw step uses sublevel segmentation gradient stretch-draw, natural curing step is first carried out before high-pressure curing step, the bulk strength of square pile can be greatly improved, reducing the link cost of pile top assembly, that improves square pile penetrates ability.
(2) manufacture method of the seismic crack concrete square pile of the present invention, design concrete mixing ratio is specially 125 parts～135 parts of stone, yellow ground 350 parts～480 parts, water reducer 98 parts～102 parts, cement 210 parts～250 parts, antidetonation compound 34 parts～45 parts and 20 parts～80 parts of anticracking polymer fiber mixture, improve the seismic crack performance of concrete, thus improve prefabricated pile and the antidetonation of pile foundation, the anti crack performance using this concrete, and the service life in corrosive medium or environment, ensure the safety of building.
(3) manufacture method of the seismic crack concrete square pile of the present invention, improve the seismic crack performance of concrete, thus improve prefabricated pile and the antidetonation of pile foundation, the anti crack performance using this concrete, and the service life in corrosive medium or environment, ensure the safety of building.
(4) manufacture method of the seismic crack concrete square pile of the present invention, each raw material during specific selection antidetonation compound preparation and suitable composition by weight proportioning thereof, anticracking polymer fiber mixture preparation raw material component and parts by weight of polypropylene alcohol fiber thereof and polybutene fiber, anticracking degree more than 8 degree, meets relevant speciality specification and the requirement of code and the environment of foundation engineering, the requirement of geological conditions reply concrete square pile.
(5) manufacture method of the seismic crack concrete square pile of the present invention, use sublevel segmentation gradient stretch-draw, can be while the hollow pile of prefabricated all size, deadweight can also be alleviated, save steel, overall without pile extension, bigger improves pile body vertical bearing capacity and the tensile capacity of structure own, the deformation of pile body and cracking during preventing from erectting.
(6) manufacture method of the seismic crack concrete square pile of the present invention, increases natural curing step, it is possible to reduce the time of high-pressure curing, relaxes the condition of high-pressure curing, reduces and produces maintenance cost, is conducive to strengthening popularization.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme is elaborated.
Embodiment 1
A kind of manufacture method of seismic crack concrete square pile:
1, design concrete mixing ratio.125 parts of stone, yellow ground 350 parts, water reducer 98 parts, cement 210 parts, antidetonation compound 34 parts and 20 parts of anticracking polymer fiber mixture.Prepared by concrete: being sequentially placed into according to the concrete mixing ratio preparation order of design, add water mix homogeneously, stirs 100s.
Each raw material weight component during the preparation of antidetonation compound is: the industrial aluminum sulphate of 16 parts, the sodium lauryl sulphate of 1 part, the silicon ash of 18 parts, the anhydrite of 20 parts, the sulfoaluminate clinker of 14 parts.
Anticracking polymer fiber mixture preparation raw material component and POLYPROPYLENE GLYCOL fiber that weight portion is 70 parts thereof and the polybutene fiber of 30 parts.
2, cast.Including the artificial cloth of die sinking, matched moulds pumping cloth, matched moulds helical feed cloth etc..The artificial cloth of die sinking, charge car is wanted held stationary, to be made the uniform cloth of material in pipe die by the program cloth of " in the middle of elder generation, rear head end, then tail end, then centre " during blanking.Charge car get the raw materials ready must reach corresponding stake specification use doses can cloth, its sub-material car sub-material amount should control at error≤0.5%.Cloth should be uniform, the slotting material at two ends, it is desirable to whole heap pries into, fuller, must not too insert real, and ensure that sandstone separates.The material fallen down to scoop up in time, but get wet, be stained with oily and scattered material and must not use again.When termination pries into material, must not note and spiral bar sled is dissipated.With steel shovel by good for neat for shovel heap, the cleanest two side form limit hairbrush, put shelves slurry straw rope well, close die cap, tights a bolt with wind big gun, from both sides, one end simultaneously to the urgent die bolt of the other end, it is ensured that joint close is tight.Matched moulds pumping cloth and matched moulds helical feed cloth use full-automatic control system, ensure that pipe die inner concrete material is the most reliable, it is to avoid manual operation causes error.Matched moulds pumping cloth uses concrete pump machine, is transported in mould by concrete pump pipe by concrete.Matched moulds helical feed cloth is by concrete conveyance to mould by spiral conveying tube.
3, muscle is worn.First on pretensioniog bed, put corner, anistree tie hoop and precast pile tip, then according to the main muscle of octagonal is worn in interior anistree tie hoop in broken end pattern hole position, anistree main muscle in being formed, then the main muscle in corner Chu Chuan corner in the stirrup of corner, forming the main muscle of outer tetragon, two ends anchorage is locked.
4, stretch-draw.Use sublevel segmentation stretch-draw, it is specially and carries out sublevel segmentation stretch-draw by carrying out the main muscle after wearing muscle step, first 5～8% to main muscle stretch-draw to stretch-draw dynamics, then pitch fixes 10～12min, unplugs pitch the most again, the 10～20% of the main muscle of stretch-draw to stretch-draw dynamics, pitch fixes 3～5min, finally, other main muscle of stretch-draw, to the 100～110% of stretch-draw dynamics, carry out grappling.
5, centrifugal forming.Carrying out according to conventional centrifugal forming method, general centrifugal have four-stage, five stages and six stages etc., it should be ensured that centrifugal steadily, speed uniformly increases and declines, it is ensured that the quality of centrifugal concrete.
6, natural curing.In atmospheric conditions, controlling curing time is 2～4h, and curing temperature is 80～100 DEG C.
7, high-pressure curing.Conventional high-pressure curing step, maintenance processes be divided into quiet stop, heat up, constant temperature and cooling four-stage.Constant temperature phase temperature can be 80 DEG C and 60 DEG C of two kinds of techniques.Finally put, the demoulding.
Embodiment 2
On the basis of embodiment 1, change design concrete mixing ratio: be specially 135 parts of stone, yellow ground 480 parts, water reducer 102 parts, cement 250 parts, antidetonation compound 45 parts and 80 parts of anticracking polymer fiber mixture.Prepared by concrete: being sequentially placed into according to the concrete mixing ratio preparation order of design, add water mix homogeneously, stirs 100s.
Each raw material weight component during the preparation of antidetonation compound is: the industrial aluminum sulphate of 26 parts, the sodium lauryl sulphate of 5 parts, the silicon ash of 35 parts, the anhydrite of 38 parts, the sulfoaluminate clinker of 25 parts.
Anticracking polymer fiber mixture preparation raw material component and POLYPROPYLENE GLYCOL fiber that weight portion is 80 parts thereof and the polybutene fiber of 20 parts.
Carry out making finished product according to the manufacture method of embodiment 1.
The seismic crack technical specification of the hollow square pile that above example 1,2 makes is as follows:
As seen from the above table, using the hollow square pile of the concrete for making of the present embodiment, its seismic crack performance have also been obtained and is obviously improved, and service life in the environment is also greatly prolonged.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (3)
1. the manufacture method of a seismic crack concrete square pile, it is characterized in that: include the design concrete mixing ratio carried out successively, pour into a mould, wear muscle, stretch-draw, centrifugal forming and high-pressure curing step, described stretch-draw step uses sublevel segmentation gradient stretch-draw, first carries out natural curing step before high-pressure curing step；Described design concrete mixing ratio is specially 125 parts～135 parts of stone, yellow ground 350 parts～480 parts, water reducer 98 parts～102 parts, cement 210 parts～250 parts, antidetonation compound 34 parts～45 parts and 20 parts～80 parts of anticracking polymer fiber mixture；Each raw material weight component during the preparation of described antidetonation compound is: the industrial aluminum sulphate of 16～26 parts, the sodium lauryl sulphate of 1～5 part, the silicon ash of 18～35 parts, the anhydrite of 20～38 parts, the sulfoaluminate clinker of 14～25 parts；Described anticracking polymer fiber mixture preparation raw material component and POLYPROPYLENE GLYCOL fiber that weight portion is 70～80 parts thereof and the polybutene fiber of 20～30 parts.
The manufacture method of seismic crack concrete square pile the most according to claim 1, it is characterized in that: described sublevel segmentation gradient stretch-draw step is particularly as follows: carry out sublevel segmentation stretch-draw by carrying out the main muscle after wearing muscle step, first 5～8% to main muscle stretch-draw to stretch-draw dynamics, then pitch fixes 10～12min, unplugs pitch the most again, the 10～20% of the main muscle of stretch-draw to stretch-draw dynamics, pitch fixes 3～5min, finally, other main muscle of stretch-draw, to the 100～110% of stretch-draw dynamics, carry out grappling.
The manufacture method of seismic crack concrete square pile the most according to claim 1, it is characterised in that: described natural curing step is in atmospheric conditions, and controlling curing time is 2～4h, and curing temperature is 80～100 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730742.XA CN104589495B (en) | 2014-12-05 | 2014-12-05 | A kind of manufacture method of seismic crack concrete square pile |
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| CN201410730742.XA CN104589495B (en) | 2014-12-05 | 2014-12-05 | A kind of manufacture method of seismic crack concrete square pile |
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| CN104589495A CN104589495A (en) | 2015-05-06 |
| CN104589495B true CN104589495B (en) | 2016-11-02 |
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| CN108516757A (en) * | 2018-03-30 | 2018-09-11 | 湖州五石科技有限公司 | A kind of seismic crack concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1401857A (en) * | 2002-09-27 | 2003-03-12 | 蒋元海 | Polyacrylic fibre reinforced pretensioning prestressed concrete pipe pile |
| CN1410238A (en) * | 2002-11-18 | 2003-04-16 | 蒋元海 | Manufacturing method of polypropylene fiber reinforced prefabricated steel concrete square pole |
| CN100336649C (en) * | 2004-09-16 | 2007-09-12 | 颜小荣 | Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method |
| CN101302758B (en) * | 2008-07-02 | 2010-07-28 | 大连大金马基础建设有限公司 | Method for processing prestress square pile |
| CN103193413A (en) * | 2013-04-19 | 2013-07-10 | 上海武冠新材料有限公司 | Concrete anti-seismic impact-resistant anti-cracking agent |
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