CN105780770A - Pre-tensioning method prestressed concrete high-strength anticorrosion anti-seismic hollow square pile - Google Patents

Pre-tensioning method prestressed concrete high-strength anticorrosion anti-seismic hollow square pile Download PDF

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Publication number
CN105780770A
CN105780770A CN201610308456.3A CN201610308456A CN105780770A CN 105780770 A CN105780770 A CN 105780770A CN 201610308456 A CN201610308456 A CN 201610308456A CN 105780770 A CN105780770 A CN 105780770A
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pile body
hollow square
concrete
corrosion
prestressed concrete
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CN201610308456.3A
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CN105780770B (en
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颜成华
颜井意
谭学立
王寿彬
霍永业
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Lianyungang craftsman Engineering Design Institute Co., Ltd
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JIANGSU DONGPU TUBULAR PILE CO Ltd
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    • 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
    • E02D5/58—Prestressed concrete piles

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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)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a pre-tensioning method prestressed concrete high-strength anticorrosion anti-seismic hollow square pile which comprises a concrete pile body, a reinforcement cage arranged in the concrete pile body an end plate and a hoop, wherein the end plate and the hoop are located at the two ends of the concrete pile body. A pile body hole is formed in the pile body. The cross section of the concrete pile body is a quadrangle with arc angles. The cross section of the reinforcement cage is a rectangle with arc angles. The reinforcement cage comprises prestressed ribs, an inner spiral hooping and an outer spiral hooping, wherein the inner spiral hooping and the outer spiral hooping are fixedly connected with the prestressed ribs. The winding direction of the inner spiral hooping is opposite to that of the outer spiral hooping. The prestressed ribs are located on the four edges and the arc angles of the reinforcement cage. According to the pre-tensioning method prestressed concrete high-strength anticorrosion anti-seismic hollow square pile, the winding direction of the inner spiral hooping is opposite to that of the outer spiral hooping, a net-shaped structure is formed, and the anti-seismic performance of the pipe pile can be enhanced greatly.

Description

A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile
Technical field
The invention belongs to pile tube field, especially a kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile.
Background technology
Existing PHC pile tube intensity is higher, but owing to internal main muscle is presstressed reinforcing steel, fragility is big, it is easy to damaging, and the tensile capacity of non-prestressing tendon and shear resistance capacity do not improve, pile body is easily generated crack.Meanwhile, the anti-seismic performance of existing pile tube not enough, when receiving horizontal loading, it is easy to occur fracture or crackle, thus affecting the safety of building.
Summary of the invention
Goal of the invention: a kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile of design, to overcome prior art to exist
Technical scheme: a kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile, including concrete pile body, the steel reinforcement cage that is arranged in concrete pile body, and is positioned at end plate and the cuff at concrete pile body two ends；Described pile body is provided with pile body hole；The cross section of described concrete pile body is the tetragon with arc angle, and the cross section of described steel reinforcement cage is the rectangle with arc angle, and described steel reinforcement cage includes presstressed reinforcing steel, and fixes the internal coiling stirrup being connected and external spiral stirrup with described presstressed reinforcing steel；The coiling of described internal coiling stirrup and external spiral stirrup is in opposite direction, and described presstressed reinforcing steel is positioned on four limits of steel reinforcement cage and arc angle place.
Preferably, in parts by weight, the concrete proportioning in described concrete pile body is: cement 380-620, silicon ash 90-150, flyash 75-125, sand 420-580, stone 980-1100, agstone 11-23, auxiliary agent 8-15, water 240-280, haydite 15-35, Colophonium 3-6, methylcellulose 5-10, sepiolite fibre 5-10, titanium dioxide 5-10.
Preferably, described auxiliary agent is made up of the component of following parts by weight: water reducer 5-10, corrosion inhibitor 2-6, retarder 0.1-0.6, EVA5-10.
Preferably, the structural formula of described water reducer is:
In formula, R1、R2、R3And R7For H or CH3, R4And R5For the one in H, CH3, isopropyl, R6And R8Being phenyl ring for H or OH, Ph, A, B are divalent organic group；M is H or Na, Z is Na+Or K+Ion, molar fraction during a, b, c, d respectively synthetic copolymer monomer, i.e. (1～3): (3～5): (1～2): (0.5～1.5)；Y is-CH2-, or-CH2CH(CH3)-；M is 40～80.
Preferably, described retarder is the one in hydroxy carboxylic acid, molasses retarder or lignin sulfonate retarder.
Preferably, described corrosion inhibitor is at least one in RI reinforcing steel bar corrosion inhibitor, JK-H2O compounded amino alcohol, COR anti-corrosive rust inhibitor, calcium acetate or sodium benzoate.
Preferably, described concrete pile body periphery is additionally provided with corrosion-inhibiting coating, and described corrosion-inhibiting coating is made up of the component of following parts by weight: polyvinyl alcohol 5-12, hydrolysis vinylon glue 45-55, blanc fixe 5-10, methylcellulose 2-5, hydroxyethyl cellulose 3-5, methyl-silicone oil 3-8, elastic pure acrylate emulsion 150-200, hydrophobically modified polyurethane associative thickener 20-25, polyvinyl acetate emulsion 15-25, Lauryl Alcohol ester 1-5.
Beneficial effect: in the present invention, the coiling of internal coiling stirrup and external spiral stirrup is in opposite direction, forms network structure, it is possible to greatly strengthen the anti-seismic performance of pile tube.In a further embodiment, by adopting the concrete of high-strength corrosion-resistant erosion, the physical property of pile tube is also improved, including intensity and durability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
In the following description, a large amount of concrete details is given to provide more thorough understanding of the invention.It is, however, obvious to a person skilled in the art that the present invention can be carried out without these details one or more.In other example, in order to avoid obscuring with the present invention, technical characteristics more well known in the art are not described.The preferred embodiment of the present invention described in detail below; but, the present invention is not limited to the detail in above-mentioned embodiment, in the technology concept of the present invention; technical scheme can being carried out multiple equivalents, these equivalents belong to protection scope of the present invention.
As it is shown in figure 1, the steel reinforcement cage 3 that the pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile of the present invention mainly includes concrete pile body 1, is arranged in concrete pile body, and it is positioned at end plate and the cuff at concrete pile body two ends；Described pile body is provided with pile body hole；The cross section of described concrete pile body is the tetragon with arc angle 2, and the cross section of described steel reinforcement cage is the rectangle with arc angle, and described steel reinforcement cage includes presstressed reinforcing steel 4, and fixes the internal coiling stirrup being connected and external spiral stirrup with described presstressed reinforcing steel；The coiling of described internal coiling stirrup 6 and external spiral stirrup 5 is in opposite direction, and described presstressed reinforcing steel is positioned on four limits of steel reinforcement cage and arc angle place.
Concrete, in parts by weight, the concrete proportioning in described concrete pile body is: cement 380-620, silicon ash 90-150, flyash 75-125, sand 420-580, stone 980-1100, agstone 11-23, auxiliary agent 8-15, water 240-280, haydite 15-35, Colophonium 3-6, methylcellulose 5-10, sepiolite fibre 5-10, titanium dioxide 5-10.Described auxiliary agent is made up of the component of following parts by weight: water reducer 5-10, corrosion inhibitor 2-6, retarder 0.1-0.6, EVA5-10.The structural formula of described water reducer is:
In formula, R1、R2、R3And R7For H or CH3, R4And R5For the one in H, CH3, isopropyl, R6And R8Being phenyl ring for H or OH, Ph, A, B are divalent organic group；M is H or Na, Z is Na+Or K+Ion, molar fraction during a, b, c, d respectively synthetic copolymer monomer, i.e. (1～3): (3～5): (1～2): (0.5～1.5)；Y is-CH2-, or-CH2CH(CH3)-；M is 40～80.Described retarder is the one in hydroxy carboxylic acid, molasses retarder or lignin sulfonate retarder.Described corrosion inhibitor is at least one in RI reinforcing steel bar corrosion inhibitor, JK-H2O compounded amino alcohol, COR anti-corrosive rust inhibitor, calcium acetate or sodium benzoate.Described concrete pile body periphery is additionally provided with corrosion-inhibiting coating, and described corrosion-inhibiting coating is made up of the component of following parts by weight: polyvinyl alcohol 5-12, hydrolysis vinylon glue 45-55, blanc fixe 5-10, methylcellulose 2-5, hydroxyethyl cellulose 3-5, methyl-silicone oil 3-8, elastic pure acrylate emulsion 150-200, hydrophobically modified polyurethane associative thickener 20-25, polyvinyl acetate emulsion 15-25, Lauryl Alcohol ester 1-5.
Pile tube performance test
Experiment 1～experiment 6
Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7
Cement 450 382 480 520 580 622 410
Silicon ash 110 92 145 136 152 124 105
Flyash 115 95 83 74 126 105 120
Sand 420 575 445 550 480 525 505
Stone 1005 990 985 1105 995 1100 980
Agstone 11.5 13.5 23 18.5 21.5 22.5 20.5
Auxiliary agent 9 12 15 10 8 14 13
Water 250 265 278 242 283 240 270
Haydite 18 25 22 15 28 35 32
Colophonium 3.5 5.5 4.5 3.2 4.8 5.8 6.0
Methylcellulose 6 8.8 7.5 5.2 9.5 10.1 6.5
Sepiolite fibre 6.5 8.2 7.6 9.5 7.8 5.5 8.8
Titanium oxide 6.8 7.5 8.3 9.2 10.1 6.2 9.6
Embodiment N1～embodiment N7, N is 1～5, and in N1, other components of each embodiment are identical, and the proportioning of auxiliary agent is different.
When N is 1～5, the proportioning of auxiliary agent is as follows respectively:
Water reducer 6.1, corrosion inhibitor (RI reinforcing steel bar corrosion inhibitor) 4.5, retarder (molasses retarder) 0.3, EVA6.5.
Water reducer 9.2, corrosion inhibitor (sodium benzoate) 3.2, retarder (hydroxy carboxylic acid) 0.1, EVA7.5.
Water reducer 5.1, corrosion inhibitor (RI reinforcing steel bar corrosion inhibitor) 5.1, retarder (molasses retarder) 0.2, EVA8.5.
Water reducer 7.3, corrosion inhibitor (sodium benzoate) 2.2, retarder (lignin sulfonate retarder) 0.4, EVA5.5.
Water reducer 10.3, corrosion inhibitor (JK-H2O compounded amino alcohol) 6.2, retarder (lignin sulfonate retarder) 0.5, EVA10.5.
The experimental result of embodiment 11 to 17:
Example 11 Example 12 Example 13 Example 14 Example 15 Example 16 Example 17 Comparison
Comprcssive strength 120 115 145 130 160 180 155 65
Anti-folding rigidity 18.5 25.5 32.5 16.5 20.5 22.5 18.5 6.2
Ultimate bending moment 350 450 550 480 380 370 420 175
Tensile strength 5.65 6.75 7.25 8.50 7.55 5.55 8.25 4.3
Energy to failure 250 245 270.5 255 280 340 320 185
Anti-sulphates corrosive 220 130 190 180 150 220 175 50
Cl diffusion coefficient 1.35 1.10 1.45 1.05 1.20 1.35 1.35 2.4
Freeze proof number of times 180 175 165 150 170 155 160 66
Electric flux 450 620 480 380 420 550 580 850
The experimental result of embodiment 21 to 27:
The experimental result of embodiment 31 to 37:
Example 31 Example 32 Example 33 Example 34 Example 35 Example 36 Example 37 Comparison
Comprcssive strength 130 125 145 130 160 170 160 65
Anti-folding rigidity 18.5 22.5 32.5 20.5 20.5 22.5 26.5 6.2
Ultimate bending moment 380 445 570 540 380 420 480 175
Tensile strength 5.60 6.45 7.25 8.55 7.65 5.35 8.25 4.3
Energy to failure 260 255 270 255 280 325 340 185
Anti-sulphates corrosive 225 140 180 185 160 210 180 50
Cl diffusion coefficient 1.25 1.15 1.55 1.15 1.25 1.45 1.35 2.4
Freeze proof number of times 170 175 185 160 180 170 185 66
Electric flux 330 540 450 410 450 525 550 850
The experimental result of embodiment 41 to 47:
Example 41 Example 42 Example 43 Example 44 Example 45 Example 46 Example 47 Comparison
Comprcssive strength 130 125 145 140 170 180 165 65
Anti-folding rigidity 16.5 25.5 31.5 20.5 23.5 22.5 25.5 6.2
Ultimate bending moment 375 445 565 510 380 400 445 175
Tensile strength 5.25 6.35 7.25 8.55 7.25 6.25 8.25 4.3
Energy to failure 260 255 270 260 290 340 350 185
Anti-sulphates corrosive 240 150 210 190 165 240 210 50
Cl diffusion coefficient 1.25 1.15 1.40 1.25 1.25 1.55 1.35 2.4
Freeze proof number of times 155 175 170 160 170 180 155 66
Electric flux 325 560 440 395 450 540 580 850
The experimental result of embodiment 51 to 57:
The water reducer of the present invention has comb shaped structure, after the long-chain in molecule is solvated by water, has significant sterically hindered effect；It is that disperse cement particles provides electrostatic repulsion effect with the sulfonic group/hydroxyl in molecular configurational.Both having ensure that water-reducing rate and concrete slump-loss that product is higher, and also ensure that concrete high-strength degree and excellent endurance quality, combination property is splendid.Alcoholic extract hydroxyl group on molecular side chain improves the solubility property of material, at linearly its bridging action intermolecular, can form layer structure simultaneously, improve the combination property of product.
Experiment two, corrosion-inhibiting coating performance test
Method according to relevant criterion or specification is tested, and data are as follows:
The standard of alkali resistance experiment be non-foaming, do not chap, do not peel off.

Claims (7)

1. a pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile, it is characterised in that the steel reinforcement cage including concrete pile body, being arranged in concrete pile body, and it is positioned at end plate and the cuff at concrete pile body two ends；Described pile body is provided with pile body hole；The cross section of described concrete pile body is the tetragon with arc angle, and the cross section of described steel reinforcement cage is the rectangle with arc angle, and described steel reinforcement cage includes presstressed reinforcing steel, and fixes the internal coiling stirrup being connected and external spiral stirrup with described presstressed reinforcing steel；The coiling of described internal coiling stirrup and external spiral stirrup is in opposite direction, and described presstressed reinforcing steel is positioned on four limits of steel reinforcement cage and arc angle place.
2. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 1, it is characterized in that, in parts by weight, the concrete proportioning in described concrete pile body is: cement 380-620, silicon ash 90-150, flyash 75-125, sand 420-580, stone 980-1100, agstone 11-23, auxiliary agent 8-15, water 240-280, haydite 15-35, Colophonium 3-6, methylcellulose 5-10, sepiolite fibre 5-10, titanium dioxide 5-10.
3. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 2, it is characterised in that described auxiliary agent is made up of the component of following parts by weight: water reducer 5-10, corrosion inhibitor 2-6, retarder 0.1-0.6, EVA5-10.
4. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 3, it is characterised in that the structural formula of described water reducer is:
In formula, R1、R2、R3And R7For H or CH3, R4And R5For the one in H, CH3, isopropyl, R6And R8Being phenyl ring for H or OH, Ph, A, B are divalent organic group；M is H or Na, Z is Na+Or K+Ion, molar fraction during a, b, c, d respectively synthetic copolymer monomer, i.e. (1～3): (3～5): (1～2): (0.5～1.5)；Y is-CH2-, or-CH2CH(CH3)-；M is 40～80.
5. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 3, it is characterised in that described retarder is the one in hydroxy carboxylic acid, molasses retarder or lignin sulfonate retarder.
6. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 3, it is characterised in that described corrosion inhibitor is at least one in RI reinforcing steel bar corrosion inhibitor, JK-H2O compounded amino alcohol, COR anti-corrosive rust inhibitor, calcium acetate or sodium benzoate.
7. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 3, it is characterized in that, described concrete pile body periphery is additionally provided with corrosion-inhibiting coating, and described corrosion-inhibiting coating is made up of the component of following parts by weight: polyvinyl alcohol 5-12, hydrolysis vinylon glue 45-55, blanc fixe 5-10, methylcellulose 2-5, hydroxyethyl cellulose 3-5, methyl-silicone oil 3-8, elastic pure acrylate emulsion 150-200, hydrophobically modified polyurethane associative thickener 20-25, polyvinyl acetate emulsion 15-25, Lauryl Alcohol ester 1-5.
CN201610308456.3A 2016-04-01 2016-05-10 A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile Active CN105780770B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106917400A (en) * 2017-03-03 2017-07-04 苏州中材建设有限公司 A kind of antidetonation corrosion resistant pile for prestressed pipe and preparation method thereof
CN110398429A (en) * 2019-06-24 2019-11-01 武汉大学 A kind of concrete filled steel tube Experimental Study on Seismic Behavior device and test method considering that work progress influences

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102979086A (en) * 2012-12-17 2013-03-20 青岛兴河建材有限公司 Prestressed concrete square pile and manufacturing method thereof
CN103031841A (en) * 2012-12-31 2013-04-10 中国建筑西南勘察设计研究院有限公司 Post-tensioned prestressing rectangular hollow foundation pit support pile
CN103233461A (en) * 2013-04-13 2013-08-07 向洋 Non-prestressed concrete solid square pile and production method thereof
CN203334276U (en) * 2013-01-28 2013-12-11 杨发 Full prestressed reinforced concrete solid round pile
CN104420464A (en) * 2013-08-26 2015-03-18 青岛兴河建材有限公司 Preparation method of prestressed concrete square pile
CN104909599A (en) * 2015-06-08 2015-09-16 江苏东浦管桩有限公司 Novel polycarboxylic acid water reducing agent and preparation method thereof, water reducing composition and concrete
CN204645032U (en) * 2015-04-30 2015-09-16 四川省建筑科学研究院 A kind of cracking resistance prestress high intensity concrete preformed pile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102979086A (en) * 2012-12-17 2013-03-20 青岛兴河建材有限公司 Prestressed concrete square pile and manufacturing method thereof
CN103031841A (en) * 2012-12-31 2013-04-10 中国建筑西南勘察设计研究院有限公司 Post-tensioned prestressing rectangular hollow foundation pit support pile
CN203334276U (en) * 2013-01-28 2013-12-11 杨发 Full prestressed reinforced concrete solid round pile
CN103233461A (en) * 2013-04-13 2013-08-07 向洋 Non-prestressed concrete solid square pile and production method thereof
CN104420464A (en) * 2013-08-26 2015-03-18 青岛兴河建材有限公司 Preparation method of prestressed concrete square pile
CN204645032U (en) * 2015-04-30 2015-09-16 四川省建筑科学研究院 A kind of cracking resistance prestress high intensity concrete preformed pile
CN104909599A (en) * 2015-06-08 2015-09-16 江苏东浦管桩有限公司 Novel polycarboxylic acid water reducing agent and preparation method thereof, water reducing composition and concrete

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106917400A (en) * 2017-03-03 2017-07-04 苏州中材建设有限公司 A kind of antidetonation corrosion resistant pile for prestressed pipe and preparation method thereof
CN106917400B (en) * 2017-03-03 2018-09-07 苏州中材建设有限公司 A kind of antidetonation corrosion resistant pile for prestressed pipe and preparation method thereof
CN110398429A (en) * 2019-06-24 2019-11-01 武汉大学 A kind of concrete filled steel tube Experimental Study on Seismic Behavior device and test method considering that work progress influences

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Address after: 222000 912, building a, Shangdong modern city, No. 86, Julong South Road, Haizhou District, Lianyungang City, Jiangsu Province

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Address before: 222346, Jiangsu Province, Haizhou District, Lianyungang City, South China Town, 310 State Road on the west side of the flood gate

Patentee before: JIANGSU DONGPU PILE. Co.,Ltd.