CN109779149A - A kind of seawater sea sand concrete columns - Google Patents
A kind of seawater sea sand concrete columns Download PDFInfo
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- CN109779149A CN109779149A CN201910036888.7A CN201910036888A CN109779149A CN 109779149 A CN109779149 A CN 109779149A CN 201910036888 A CN201910036888 A CN 201910036888A CN 109779149 A CN109779149 A CN 109779149A
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- 239000004567 concrete Substances 0.000 title claims abstract description 55
- 239000004576 sand Substances 0.000 title claims abstract description 55
- 239000013535 sea water Substances 0.000 title claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 239000002131 composite material Substances 0.000 claims abstract description 34
- 239000004568 cement Substances 0.000 claims abstract description 22
- 239000004698 Polyethylene Substances 0.000 claims abstract description 19
- -1 polyethylene Polymers 0.000 claims abstract description 19
- 229920000573 polyethylene Polymers 0.000 claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 12
- 229920001903 high density polyethylene Polymers 0.000 claims description 7
- 239000004700 high-density polyethylene Substances 0.000 claims description 7
- 210000003205 muscle Anatomy 0.000 claims description 7
- 235000014653 Carica parviflora Nutrition 0.000 claims description 4
- 241000243321 Cnidaria Species 0.000 claims description 4
- 102000002322 Egg Proteins Human genes 0.000 claims 1
- 108010000912 Egg Proteins Proteins 0.000 claims 1
- 210000004681 ovum Anatomy 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 5
- 230000035939 shock Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 11
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- 208000002740 Muscle Rigidity Diseases 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
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- 230000009977 dual effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
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Abstract
A kind of seawater sea sand concrete columns, including polyethylene pipe and several FRP- steel composite reinforcings, several described FRP- steel composite reinforcings are vertically located in polyethylene pipe, several described FRP- steel composite reinforcings are uniformly arranged to equal radians along a circumferencial direction, several described FRP- steel composite reinforcings are externally provided with FRP- steel compound stirrup, concrete is filled in the polyethylene pipe, the concrete is made of sea sand, seawater, cement and coarse aggregate.The present invention is carried out under constraining jointly using the concrete that outer polyethylene pipe and interior FRP- steel composite reinforcing constitute sea sand and seawater, the bearing capacity of concrete column is improved, ductility and shock resistance are improved, anticorrosive property is prominent, to which the sectional dimension of column is reduced, building usable floor area is increased, and anti-bending strength is good.
Description
Technical field
The present invention relates to technical field of concrete, and in particular to a kind of seawater sea sand concrete columns.
Background technique
Concrete structure, steel construction and steel-concrete combined structure, these structures suffer from respective advantage, also exist
Be widely used in civil engineering, but also expose some problems in engineering practice, most distinct issues be due to
The corrosion of reinforcing bar or steel causes structure premature degradation or structure function insufficient.In the U.S., 40% or more bridge is had confirmed that
Belong to structure durability deficiency or functional deterioration, this requires effective structure Enhancement Method and the novel height of should developing the economy as early as possible
Performance structure material improves structural behaviour with extending structure shelf life.
It builds island national defence and military infrastructure, Development of Marine Economy Potential necessity builds many oceans and port structure
And structures, a large amount of civil engineering, basic material concrete certainty dosage is considerable, and building sand is as the fine aggregate in concrete
Also necessity increases significantly.Currently, the sand and water in concrete are mainly the light sand of fresh, for some apart from distant
Island construction on the one hand influence construction if needed using traditional concrete from a large amount of river sand of inland transport and fresh water
Duration, while increasing construction cost, thus if a kind of method can be found, concrete can be configured with the sea sand of seawater and original state,
The problem of fresh water light sand shortage of resources can not only be mitigated, the mixing cost of concrete can also be reduced to a certain extent, it is right
Meeting marine economy development and island national defense construction has extraordinary meaning.
FRP tendons (Fiber Reinforced Plastics Bars fibrous composite) have corrosion-resistant, tensile strength
It is high, density is small, light weight, the advantages that solenoid isolation is good, damping property is good, but there is also material fragilities and price height etc. to lack
Point.The elasticity modulus of existing FRP tendons (in addition to high-strength CFRP tendons) is lower compared with the elasticity modulus of reinforcing bar, stress-strain relation
Linear section leads to the brittleness of FRP tendons concrete component when it is individually used in concrete structure without yield point elongation
Excessive fracture width and amount of deflection under destructive characteristics and use state, these disadvantages limit its pushing away in field of civil engineering
Wide and application.
Summary of the invention
Present invention aims to overcome that the shortcomings that prior art and deficiency, provide a kind of seawater sea sand concrete columns, it can
Overcome the influence of corrosion and replace ordinary reinforced concrete, especially suitable under the adverse circumstances such as moist and salt-soda soil building,
The special constructions such as bridge, hydraulic structure, sea port dock.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of seawater sea sand concrete columns, including polyethylene pipe and several FRP- steel composite reinforcings, several described FRP-
Steel composite reinforcing is vertically located in polyethylene pipe, several described FRP- steel composite reinforcings are radians are waited along a circumferencial direction uniform
Setting, several described FRP- steel composite reinforcings are externally provided with FRP- steel compound stirrup, are filled with concrete, institute in the polyethylene pipe
Concrete is stated to be made of sea sand, seawater, cement and coarse aggregate.
From the foregoing, it will be observed that the concrete that the present invention is constituted sea sand and seawater using outer polyethylene pipe and interior FRP- steel composite reinforcing
It carries out under constraining jointly, the bearing capacity of concrete column is improved, ductility and shock resistance are improved, and anticorrosive property is prominent
Out, so that the sectional dimension of column is reduced, building usable floor area is increased, and anti-bending strength is good.
FRP- steel composite reinforcing of the invention is by the FRP material of reinforcing bar outer layer by internal reinforcing bar and external aggressivity ring
Border separates, to improve the corrosion resistance of muscle material, FRP material and the common stress of reinforcing bar have complementary advantages, both improve reinforcing bar
Performance after surrender, while the ductility for also compensating for FRP tendons is insufficient: the cost of FRP- steel composite reinforcing is far below pure FRP tendons, with reinforcing bar
It compares, the mechanics and corrosion resistance of muscle material can be significantly improved by only increasing less cost, and cost performance is high.When FRP- steel is compound
When muscle is biased active force, FRP- steel composite reinforcing is stretching stress, and stress-strain diagram shows bright before fibrous fracture
Aobvious dual slope, FRP- steel composite reinforcing has stable secondary rigidity after reinforcement yielding, and stress-strain diagram can be divided into 3rd area
Section: the first section is the co-operation deformation stage of FRP fiber cloth and reinforcing bar；Second section is FRP fiber cloth after reinforcement yielding
The stage of stress increment is provided, this segmental stiffness becomes smaller compared with the first section；Third section is after FRP fiber cloth is destroyed, and reinforcing bar is only
From the stage of bearing load.
In conclusion the present invention can overcome the influence of corrosion and replace ordinary reinforced concrete, especially suitable for moist and
The special constructions such as building, bridge, hydraulic structure, sea port dock under the adverse circumstances such as salt-soda soil.
As an improvement of the present invention, the cement that the cement is 42.5 grades, the sea sand, seawater, cement and thick bone
The weight ratio of material is 15.54:27.33:48.59:8.54.
As an improvement of the present invention, the cement that the cement is 52.5 grades, the sea sand, seawater, cement and thick bone
The weight ratio of material is 27.56:20.9:44.38:7.16.
As an improvement of the present invention, the FRP- steel compound stirrup is spring helical form stirrup.
As an improvement of the present invention, the FRP- steel compound stirrup is circular stirrup, the annular shape stirrup
Quantity is several, several circular stirrups are distributed from the bottom to top and are fixedly connected with FRP- steel composite reinforcing.
As an improvement of the present invention, the polyethylene pipe is that SRTP is managed or HDPE is managed.
Further, the coarse aggregate is natural rubble or cobble or coral.
Compared with prior art, the invention has the following advantages that
The present invention is carried out common using the concrete that outer polyethylene pipe and interior FRP- steel composite reinforcing constitute sea sand and seawater
Under constraint, the bearing capacity of concrete column is improved, ductility and shock resistance are improved, and anticorrosive property is prominent, thus column
Sectional dimension reduced, building usable floor area increased, anti-bending strength is good；
Original sea sand can be used directly in the present invention, without carrying out desalt processing to original sea sand, can be used directly to be made
Marine sand concrete and carry out column component and pour, saved freshwater resources, omitted and the treatment process of desalted sea sand, greatlyd improve
The utilization rate of sea sand can effectively solve the problems, such as that coastal area or surrounding islands and reefs area river sand construction material lack, also keep away
Exhaustive exploitation river sand bring ecological environment problem is exempted from；
The present invention is easy for construction, and HDPE pipe is the template of resistance to side pressure, in placing concrete, can be used as permanent template, and
Therefore installation technology can be simplified, shorten the construction period by being suitable for advanced pump filling concrete making technology.
Detailed description of the invention
Fig. 1 is the sectional view of seawater sea sand concrete columns embodiment 1 of the present invention；
Fig. 2 is the internal structure chart of seawater sea sand concrete columns embodiment 1 of the present invention；
Fig. 3 is the sectional view of seawater sea sand concrete columns embodiment 2 of the present invention；
Fig. 4 is the internal structure chart of seawater sea sand concrete columns embodiment 2 of the present invention.
Specific embodiment
To keep the purposes, technical schemes and advantages of the invention implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing the technical scheme of the present invention will be further described explanation, it is clear that described embodiment is only of the invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1
Seawater sea sand concrete columns as depicted in figs. 1 and 2 are the embodiment of the present invention 1, a kind of seawater marine sand concrete
Column, including polyethylene pipe 10 and several FRP- steel composite reinforcings 20, several described FRP- steel composite reinforcings 20 are vertically located at poly-
In ethylene tube 10, several described FRP- steel composite reinforcings 20 are uniformly arranged to equal radians along a circumferencial direction, it is described several
FRP- steel composite reinforcing 20 is externally provided with FRP- steel compound stirrup 30, is filled with concrete 40, the coagulation in the polyethylene pipe 10
Soil 40 is made of sea sand, seawater, cement and coarse aggregate.
From the foregoing, it will be observed that the concrete that the present invention is constituted sea sand and seawater using outer polyethylene pipe and interior FRP- steel composite reinforcing
It carries out under constraining jointly, the bearing capacity of concrete column is improved, ductility and shock resistance are improved, and anticorrosive property is prominent
Out, so that the sectional dimension of column is reduced, building usable floor area is increased, and anti-bending strength is good.
FRP- steel composite reinforcing of the invention is by the FRP material of reinforcing bar outer layer by internal reinforcing bar and external aggressivity ring
Border separates, to improve the corrosion resistance of muscle material, FRP material and the common stress of reinforcing bar have complementary advantages, both improve reinforcing bar
Performance after surrender, while the ductility for also compensating for FRP tendons is insufficient: the cost of FRP- steel composite reinforcing is far below pure FRP tendons, with reinforcing bar
It compares, the mechanics and corrosion resistance of muscle material can be significantly improved by only increasing less cost, and cost performance is high.When FRP- steel is compound
When muscle is biased active force, FRP- steel composite reinforcing is stretching stress, and stress-strain diagram shows bright before fibrous fracture
Aobvious dual slope, FRP- steel composite reinforcing has stable secondary rigidity after reinforcement yielding, and stress-strain diagram can be divided into 3rd area
Section: the first section is the co-operation deformation stage of FRP fiber cloth and reinforcing bar；Second section is FRP fiber cloth after reinforcement yielding
The stage of stress increment is provided, this segmental stiffness becomes smaller compared with the first section；Third section is after FRP fiber cloth is destroyed, and reinforcing bar is only
From the stage of bearing load.
In conclusion the present invention can overcome the influence of corrosion and replace ordinary reinforced concrete, especially suitable for moist and
The special constructions such as building, bridge, hydraulic structure, sea port dock under the adverse circumstances such as salt-soda soil.
In the present embodiment, the FRP- steel compound stirrup 30 is spring helical form stirrup.Spring helical form stirrup is being pacified
It is very convenient when dress, spring helical form stirrup need to only be covered in FRP- steel composite reinforcing.
In the present embodiment, the polyethylene pipe 10 is HDPE pipe.HDPE pipe has good heat resistance and cold resistance, changes
Stability is good, rigidity and toughness also with higher, and mechanical strength is good；The hardness of HDPE pipe, tensile strength and creep properties are excellent
In low density polyethylene (LDPE)；Chemical stability is good, at room temperature, does not dissolve in any organic solvent, acid and alkali resistance and various salts
Corrosion；Film is small to the permeability of vapor and air, water imbibition is low.
In the present embodiment, the coarse aggregate can be using natural rubble or cobble or coral, can be according to practice of construction
The actual conditions at scene choose the type of coarse aggregate according to economic benefit, and natural rubble, cobble and coral are able to satisfy reality
The requirement of engineering strength.
In the present embodiment, according to the test of multiple object test it is found that if the cement that the cement is 42.5 grades, institute
The weight ratio for stating sea sand, seawater, cement and coarse aggregate is 15.54:27.33:48.59:8.54.If the cement is 52.5 grades
Cement, then the weight ratio of the sea sand, seawater, cement and coarse aggregate be 27.56:20.9:44.38:7.16.At this time above-mentioned two
It is best respectively that kind scheme, which obtains the comprehensive performances such as the corrosion resistance of concrete, tensile strength height and density,.
Compared with prior art, the invention has the following advantages that
The present invention is carried out common using the concrete that outer polyethylene pipe and interior FRP- steel composite reinforcing constitute sea sand and seawater
Under constraint, the bearing capacity of concrete column is improved, ductility and shock resistance are improved, and anticorrosive property is prominent, thus column
Sectional dimension reduced, building usable floor area increased, anti-bending strength is good；
Original sea sand can be used directly in the present invention, without carrying out desalt processing to original sea sand, can be used directly to be made
Marine sand concrete and carry out column component and pour, saved freshwater resources, omitted and the treatment process of desalted sea sand, greatlyd improve
The utilization rate of sea sand can effectively solve the problems, such as that coastal area or surrounding islands and reefs area river sand construction material lack, also keep away
Exhaustive exploitation river sand bring ecological environment problem is exempted from；
The present invention is easy for construction, and HDPE pipe is the template of resistance to side pressure, in placing concrete, can be used as permanent template, and
Therefore installation technology can be simplified, shorten the construction period by being suitable for advanced pump filling concrete making technology.
Embodiment 2
Seawater sea sand concrete columns as shown in Figure 3 and Figure 4 are the embodiment of the present invention 2, different from embodiment 1
It is that the FRP- steel compound stirrup 30 is circular stirrup, the quantity of the annular shape stirrup is several, several are circular
Stirrup is distributed from the bottom to top and is fixedly connected with FRP- steel composite reinforcing 20.Circular stirrup fixes company with FRP- steel composite reinforcing
It connects, is more fastened in conjunction with obtaining.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (7)
1. a kind of seawater sea sand concrete columns, it is characterised in that: including polyethylene pipe and several FRP- steel composite reinforcings, if described
A dry FRP- steel composite reinforcing is vertically located in polyethylene pipe, several described FRP- steel composite reinforcings wait arcs along a circumferencial direction
It is uniformly arranged to degree, several described FRP- steel composite reinforcings are externally provided with FRP- steel compound stirrup, are filled in the polyethylene pipe
Concrete, the concrete are made of sea sand, seawater, cement and coarse aggregate.
2. seawater sea sand concrete columns according to claim 1, it is characterised in that: the cement that the cement is 42.5 grades,
The sea sand, seawater, cement and coarse aggregate weight ratio be 15.54:27.33:48.59:8.54.
3. seawater sea sand concrete columns according to claim 1, it is characterised in that: the cement that the cement is 52.5 grades,
The sea sand, seawater, cement and coarse aggregate weight ratio be 27.56:20.9:44.38:7.16.
4. seawater sea sand concrete columns according to claim 1, it is characterised in that: the FRP- steel compound stirrup is spring
Helical form stirrup.
5. seawater sea sand concrete columns according to claim 1, it is characterised in that: the FRP- steel compound stirrup is annulus
The quantity of shape stirrup, the annular shape stirrup is several, several circular stirrups are distributed from the bottom to top and answer with FRP- steel
Muscle is closed to be fixedly connected.
6. seawater sea sand concrete columns according to claim 1, it is characterised in that: the polyethylene pipe be SRTP manage or
HDPE pipe.
7. seawater sea sand concrete columns according to claim 1, it is characterised in that: the coarse aggregate is natural rubble or ovum
Stone or coral.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910036888.7A CN109779149A (en) | 2019-01-15 | 2019-01-15 | A kind of seawater sea sand concrete columns |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910036888.7A CN109779149A (en) | 2019-01-15 | 2019-01-15 | A kind of seawater sea sand concrete columns |
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| CN109779149A true CN109779149A (en) | 2019-05-21 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318495A (en) * | 2019-07-10 | 2019-10-11 | 中国矿业大学 | One kind can assembled permanent formwork overlapping FRP tendons seawater sea sand Recycled Concrete Beams and preparation method thereof |
| CN110714577A (en) * | 2019-11-08 | 2020-01-21 | 南京林业大学 | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete |
| CN111270668A (en) * | 2020-02-27 | 2020-06-12 | 深圳市粤通建设工程有限公司 | Engineering pile based on recycled aggregate seawater sea sand FPR composite material rib |
| CN111851400A (en) * | 2020-05-26 | 2020-10-30 | 河海大学 | Confined concrete column based on sea sand seawater TRC prefabricated shell and preparation method |
| CN111962758A (en) * | 2020-08-21 | 2020-11-20 | 山东农业大学 | Method for building wall by using plate type light energy-saving building blocks |
| WO2021129019A1 (en) * | 2019-12-27 | 2021-07-01 | 尹世平 | Seawater coral aggregate concrete building block with built-in frp rib skeleton and construction method |
| CN113152791A (en) * | 2021-04-08 | 2021-07-23 | 扬州大学 | Combined column and construction method thereof |
| CN113374175A (en) * | 2021-06-28 | 2021-09-10 | 广西大学 | Corrosion-resistant CFRP-high-strength steel composite pipe sea aggregate seawater concrete combined column |
| CN115522686A (en) * | 2022-10-11 | 2022-12-27 | 暨南大学 | FRP anti-sliding composite pipe confined seawater sea sand concrete column and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318495A (en) * | 2019-07-10 | 2019-10-11 | 中国矿业大学 | One kind can assembled permanent formwork overlapping FRP tendons seawater sea sand Recycled Concrete Beams and preparation method thereof |
| CN110714577A (en) * | 2019-11-08 | 2020-01-21 | 南京林业大学 | Steel pipe concrete structure with built-in composite pipe seawater sea sand concrete |
| WO2021129019A1 (en) * | 2019-12-27 | 2021-07-01 | 尹世平 | Seawater coral aggregate concrete building block with built-in frp rib skeleton and construction method |
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| CN111270668B (en) * | 2020-02-27 | 2021-10-01 | 深圳市粤通建设工程有限公司 | Engineering pile based on recycled aggregate seawater sea sand FPR composite material rib |
| CN111851400A (en) * | 2020-05-26 | 2020-10-30 | 河海大学 | Confined concrete column based on sea sand seawater TRC prefabricated shell and preparation method |
| CN111962758A (en) * | 2020-08-21 | 2020-11-20 | 山东农业大学 | Method for building wall by using plate type light energy-saving building blocks |
| CN113152791A (en) * | 2021-04-08 | 2021-07-23 | 扬州大学 | Combined column and construction method thereof |
| CN113374175A (en) * | 2021-06-28 | 2021-09-10 | 广西大学 | Corrosion-resistant CFRP-high-strength steel composite pipe sea aggregate seawater concrete combined column |
| CN115522686A (en) * | 2022-10-11 | 2022-12-27 | 暨南大学 | FRP anti-sliding composite pipe confined seawater sea sand concrete column and construction method |
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Application publication date: 20190521 |