CN105780770B - A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile - Google Patents

A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile Download PDF

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Publication number
CN105780770B
CN105780770B CN201610308456.3A CN201610308456A CN105780770B CN 105780770 B CN105780770 B CN 105780770B CN 201610308456 A CN201610308456 A CN 201610308456A CN 105780770 B CN105780770 B CN 105780770B
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China
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pile body
stirrup
corrosion
concrete
reinforcement cage
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CN201610308456.3A
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CN105780770A (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

Abstract

The invention discloses a kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile, including concrete pile body, the steel reinforcement cage being arranged in concrete pile body and the end plate and cuff positioned at concrete pile body both ends；The pile body is provided with pile body hole；The cross section of the concrete pile body is the quadrangle with arc angle, and the cross section of the steel reinforcement cage is the rectangle with arc angle, and the steel reinforcement cage includes presstressed reinforcing steel and the inside spin stirrup and external spiral stirrup that are fixedly connected with the presstressed reinforcing steel；The coiling direction of the inside spin stirrup and external spiral stirrup on the contrary, the presstressed reinforcing steel be located on four sides of steel reinforcement cage and arc angle at.In the present invention, the coiling direction of inside spin stirrup and external spiral stirrup can greatly enhance the anti-seismic performance of pile pile on the contrary, form net structure.

Description

A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile
Technical field
The invention belongs to pile pile field, especially a kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile.
Background technology
Existing PHC pile piles intensity is higher, but since internal main reinforcement is presstressed reinforcing steel, brittleness is big, is easily damaged, And the tensile capacity and shear resistance capacity of non-prestressing tendon are not improved, pile body is also easy to produce crack.Meanwhile existing pile tube Anti-seismic performance not enough, when receiving horizontal loading, easily occur fracture or crackle, so as to influence building safety.
The content of the invention
Goal of the invention：A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile is designed, to overcome existing skill Existing for art
Technical solution：A kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile, including concrete pile body, sets The steel reinforcement cage and the end plate and cuff positioned at concrete pile body both ends being placed in concrete pile body；The pile body is provided with stake Body hole；The cross section of the concrete pile body is the quadrangle with arc angle, and the cross section of the steel reinforcement cage is with arc angle Rectangle, the steel reinforcement cage include presstressed reinforcing steel and the inside spin stirrup and external spiral hoop that are fixedly connected with the presstressed reinforcing steel Muscle；The coiling direction of the inside spin stirrup and external spiral stirrup is on the contrary, the presstressed reinforcing steel is located on four sides of steel reinforcement cage At arc angle.
Preferably, in terms of parts by weight, the concrete proportioning in the 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, rosin 3-6, methylcellulose 5-10, sepiolite fibre 5-10, titanium dioxide 5-10.
Preferably, the auxiliary agent is made of the component of following parts by weight：Water-reducing agent 5-10, corrosion inhibitor 2-6, retarder 0.1-0.6、EVA 5-10。
Preferably, the structural formula of the water-reducing agent is：
In formula, R1、R2、R3And R7For H or CH3, R4And R5For one kind in H, CH3, isopropyl, R6And R8For H or OH, Ph For phenyl ring, A, B are bivalent organic group；M is H or Na, Z Na+Or K+Ion, when a, b, c, d are respectively synthetic copolymer monomer Molar fraction, i.e., (1~3)：(3~5)：(1~2)：(0.5~1.5)；Y is-CH2- or-CH2CH(CH3)-；M for 40~ 80。
Preferably, the retarder is one kind in hydroxycarboxylic acid, molasses retarder or lignin sulfonate retarder.
Preferably, the corrosion inhibitor is RI reinforcing steel bar corrosion inhibitors, JK-H2O compounded aminos alcohol, COR anti-corrosive rust inhibitors, calcium acetate Or at least one of sodium benzoate.
Preferably, the concrete pile body periphery is additionally provided with corrosion-inhibiting coating, and the corrosion-inhibiting coating is by following parts by weight Component composition：Polyvinyl alcohol 5-12, hydrolysis vinylon glue 45-55, blanc fixe 5-10, methylcellulose 2-5, ethoxy are fine Tie up element 3-5, methyl-silicone oil 3-8, elastic pure acrylate lotion 150-200, hydrophobically modified polyurethane association thickener 20- 25th, polyvinyl acetate emulsion 15-25, Lauryl Alcohol ester 1-5.
Advantageous effect：In the present invention, the coiling direction of inside spin stirrup and external spiral stirrup is on the contrary, form netted knot Structure can greatly enhance the anti-seismic performance of pile pile.In a further embodiment, the coagulation lost by using high-strength corrosion-resistant Soil also improves the physical property of pile pile, including intensity and durability.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Specific embodiment
In the following description, a large amount of concrete details are given in order to provide more thorough understanding of the invention.So And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to Implement.In other examples, in order to avoid with the present invention obscure, for some technical characteristics well known in the art not into Row description.The preferred embodiment of the present invention described in detail below, still, during present invention is not limited to the embodiments described above Detail within the scope of the technical concept of the present invention, can carry out a variety of equivalents to technical scheme, these Equivalents all belong to the scope of protection of the present invention.
As shown in Figure 1, the pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile of the present invention mainly includes coagulation Native pile body 1, the steel reinforcement cage 3 being arranged in concrete pile body and the end plate and cuff positioned at concrete pile body both ends；The stake Body is provided with pile body hole；The cross section of the concrete pile body is the quadrangle with arc angle 2, and the cross section of the steel reinforcement cage is Rectangle with arc angle, the steel reinforcement cage include presstressed reinforcing steel 4 and the inside spin stirrup being fixedly connected with the presstressed reinforcing steel With external spiral stirrup；The coiling direction of the inside spin stirrup 6 and external spiral stirrup 5 is on the contrary, the presstressed reinforcing steel is located at reinforcing bar On four sides of cage and at arc angle.
Specifically, in terms of parts by weight, the concrete proportioning in the 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, rosin 3-6, methylcellulose 5-10, sepiolite fibre 5-10, titanium dioxide 5-10.The auxiliary agent is by following heavy Measure the component composition of number：Water-reducing agent 5-10, corrosion inhibitor 2-6, retarder 0.1-0.6, EVA5-10.The structure of the water-reducing agent Formula is：
In formula, R1、R2、R3And R7For H or CH3, R4And R5For one kind in H, CH3, isopropyl, R6And R8For H or OH, Ph For phenyl ring, A, B are bivalent organic group；M is H or Na, Z Na+Or K+Ion, when a, b, c, d are respectively synthetic copolymer monomer Molar fraction, i.e., (1~3)：(3~5)：(1~2)：(0.5~1.5)；Y is-CH2- or-CH2CH(CH3)-；M for 40~ 80.The retarder is one kind in hydroxycarboxylic acid, molasses retarder or lignin sulfonate retarder.The corrosion inhibitor is At least one of RI reinforcing steel bar corrosion inhibitors, JK-H2O compounded aminos alcohol, COR anti-corrosive rust inhibitors, calcium acetate or sodium benzoate.It is described Concrete pile body periphery is additionally provided with corrosion-inhibiting coating, and the corrosion-inhibiting coating is made 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- 8th, elastic pure acrylate lotion 150-200, hydrophobically modified polyurethane association thickener 20-25, polyvinyl acetate emulsion 15- 25th, Lauryl Alcohol ester 1-5.
Pile pile 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
Rosin 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 that the other components of each embodiment in 1~5, N1 are identical, and the proportioning of auxiliary agent is different.
When N is 1~5, the proportioning difference of auxiliary agent is as follows：
Water-reducing agent 6.1, corrosion inhibitor (RI reinforcing steel bar corrosion inhibitors) 4.5, retarder (molasses retarder) 0.3, EVA 6.5.
Water-reducing agent 9.2, corrosion inhibitor (sodium benzoate) 3.2, retarder (hydroxycarboxylic acid) 0.1, EVA 7.5.
Water-reducing agent 5.1, corrosion inhibitor (RI reinforcing steel bar corrosion inhibitors) 5.1, retarder (molasses retarder) 0.2, EVA 8.5.
Water-reducing agent 7.3, corrosion inhibitor (sodium benzoate) 2.2, retarder (lignin sulfonate retarder) 0.4, EVA 5.5。
Water-reducing agent 10.3, corrosion inhibitor (JK-H2O compounded aminos alcohol) 6.2, retarder (lignin sulfonate retarder) 0.5、EVA 10.5。
The experimental result of embodiment 11 to 17：
Example 11 Example 12 Example 13 Example 14 Example 15 Example 16 Example 17 Control
Compression 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 coefficients 1.35 1.10 1.45 1.05 1.20 1.35 1.35 2.4
Freeze proof number 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 Control
Compression 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 coefficients 1.25 1.15 1.55 1.15 1.25 1.45 1.35 2.4
Freeze proof number 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 Control
Compression 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 coefficients 1.25 1.15 1.40 1.25 1.25 1.55 1.35 2.4
Freeze proof number 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-reducing agent of the present invention has comb shaped structure, after the long-chain in molecule is solvated by water, has significant space bit Resistance acts on；With sulfonic group/hydroxyl in molecular configurational electrostatic repulsion effect is provided for disperse cement particles.Both production had been ensure that The slump-loss of the higher water-reducing rate of product and concrete also ensures concrete high-strength degree and excellent endurance quality, comprehensive Performance is splendid.Alcoholic extract hydroxyl group on molecular side chain improves the solubility property of material, at the same can in its linear intermolecular bridging action, Layer structure is formed, improves the comprehensive performance of product.
Experiment two, corrosion-inhibiting coating performance test
It is tested according to the method for relevant criterion or specification, data are as follows：
The standard of alkali resistance experiment is not blistering, is not cracked, does not remove.

Claims (3)

1. a kind of pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile, which is characterized in that including concrete pile body, set The steel reinforcement cage and the end plate and cuff positioned at concrete pile body both ends being placed in concrete pile body；The pile body is provided with stake Body hole；The cross section of the concrete pile body is the quadrangle with arc angle, and the cross section of the steel reinforcement cage is with arc angle Rectangle, the steel reinforcement cage include presstressed reinforcing steel and the inside spin stirrup and external spiral hoop that are fixedly connected with the presstressed reinforcing steel Muscle；On the contrary, forming net structure, the presstressed reinforcing steel is located at reinforcing bar in the coiling direction of the inside spin stirrup and external spiral stirrup On four sides of cage and at arc angle；
In terms of parts by weight, the concrete proportioning in the 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, rosin 3-6, methylcellulose 5-10, sepiolite fibre 5-10, titanium dioxide 5-10；
The auxiliary agent is made of the component of following parts by weight：Water-reducing agent 5-10, corrosion inhibitor 2-6, retarder 0.1-0.6, EVA 5-10；
The structural formula of the water-reducing agent is：
In formula, R1、R2、R3And R7For H or CH3, R4And R5For one kind in H, CH3, isopropyl, R6And R8It is benzene for H or OH, Ph Ring, A, B are bivalent organic group；M is H or Na, Z Na+Or K+Ion, rubbing when a, b, c, d are respectively synthetic copolymer monomer That fraction, i.e., (1~3)：(3~5)：(1~2)：(0.5~1.5)；Y is-CH2- or-CH2CH(CH3)-；M is 40~80；
The retarder is one kind in hydroxycarboxylic acid, molasses retarder or lignin sulfonate retarder.
2. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 1, which is characterized in that institute State corrosion inhibitor in RI reinforcing steel bar corrosion inhibitors, JK-H2O compounded aminos alcohol, COR anti-corrosive rust inhibitors, calcium acetate or sodium benzoate extremely Few one kind.
3. pretensioning prestressed concrete high-intensity corrosion vibration proof hollow square pile according to claim 1, which is characterized in that institute It states concrete pile body periphery and is additionally provided with corrosion-inhibiting coating, the corrosion-inhibiting coating is made of the component of following parts by weight：Polyethylene 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 lotion 150-200, hydrophobically modified polyurethane association 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 (1)

* 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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110398429B (en) * 2019-06-24 2020-06-09 武汉大学 Steel pipe concrete anti-seismic performance test device and test method considering influence of construction process

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Publication number Priority date Publication date Assignee Title
CN102979086B (en) * 2012-12-17 2013-09-04 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
CN104909599B (en) * 2015-06-08 2017-06-06 江苏东浦管桩有限公司 Polycarboxylate water-reducer, its preparation method and diminishing composition and concrete

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
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

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