CN101050662A - High density polypropylene pipe concrete pole - Google Patents
High density polypropylene pipe concrete pole Download PDFInfo
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- CN101050662A CN101050662A CN 200710027719 CN200710027719A CN101050662A CN 101050662 A CN101050662 A CN 101050662A CN 200710027719 CN200710027719 CN 200710027719 CN 200710027719 A CN200710027719 A CN 200710027719A CN 101050662 A CN101050662 A CN 101050662A
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- concrete
- high density
- density polyethylene
- pipe
- density polypropylene
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Abstract
The present invention discloses a high-density polyethylene pipe concrete column. Said structure column is made up by filling high-density polyethylene pipe with concrete, and is formed into the invented high-density polyethylene pipe concrete column. The wall thickness of above-mentioned high-density polyethylene pipe can be changed according to the different circumferential hoping force and deformation dimension requirements of structure member in structural engineering, and according to the compressive resistance of said structure member the concrete strength grade can be defined.
Description
Technical field:
The invention belongs to the structural element of construction work, relate to a kind of corrosive environment, construction work post member---high density polypropylene pipe concrete pole that deformation requirements is big of being applied to.
Background technology:
The steel core concrete column that penetration concrete forms in steel pipe belongs to the hoop concrete member.Steel pipe not only bears longitudinal loading, simultaneously core concrete is applied horizontal restrain, makes it be in the three dimension stress state, delays the generation and the development of its vertical microcrack, thereby improves its compressive strength and compression deformation ability.And outer steel pipe column is because the existence of core concrete, prevented the cripling of thin-wall steel tube to a certain extent, strengthen the geometrical stability of steel pipe walls, change the unstability mode of empty steel pipe, steel core concrete column should be used as axis compression member and compression member with small eccentricity.But steel core concrete column itself also has some outstanding defectives, specifically has: the poor corrosion resistance of (1) steel, and maintenance cost is very high; (2) though steel core concrete column destruction deformability increases than the ordinary concrete post, the raising degree is limited, especially when the large eccentric pressuring load action, improves not obvious.
Summary of the invention:
The objective of the invention is: the problem that exists at prior art, under the prerequisite that does not increase engineering cost, proposes a kind of can improve the mechanical property of concrete column and antiseptic property is superior, destroy deformability by force, a kind of building structure post of easy construction.
Content of the present invention is a high density polypropylene pipe concrete pole.
The present invention is a fill concrete in high density polyethylene pipe, forms high density polypropylene pipe concrete pole, as shown in Figure 1.
Size requirements is different changes with distortion according to the circumferential tightening force of member in the Structural Engineering for above-specified high density polyethylene pipe wall thickness.
Above-mentioned strength grade of concrete adopts the different intensity grades concrete according to member anti-pressure ability difference in the Structural Engineering.
Compare with concrete column traditional in the prior art, beneficial effect of the present invention is:
(1) mechanical property effectively improves.After fill concrete formed HDPE pipe confined concrete post in high density polyethylene pipe (HDPE), the HDPE pipe had retrained concrete, under the axial compression load action, and concrete three dimension stress, the longitudinal cracking when having delayed pressurized.And the too early generation cripling of HDPE pipe can be avoided or delay to concrete existence, two kinds of materials have remedied weakness each other mutually, can give full play to strong point each other, thereby make this new structural member have very high bearing capacity, be higher than HDPE pipe and the independent bearing capacity sum of core concrete of forming new structural member.
(2) economic benefit is given full play to.As a kind of comparatively reasonable structure form, adopt HDPE pipe confined concrete can bring into play high density polyethylene (HDPE) and two kinds of properties of materials of concrete and potentiality well, make material obtain more abundant and rational application.And HDPE pipe confined concrete and concrete filled steel tube are similar, engineering is actual in a large number shows, adopt the compression-member of concrete filled steel tube can save concrete 50% than the auspicious pact of ordinary reinforced concrete pressure-bearing structure, alleviate dead load about 50%, rolled steel dosage is slightly high or rough equal; Compare with steel work, can save steel about 50%.HDPE pipe confined concrete post has the advantage the same with steel core concrete column, has good economic effect.
(3) easy construction.The HDPE pipe concrete belongs to hoop concrete in itself, and the HDPE pipe itself is exactly the template of anti-side pressure, when placing of concrete, can save the construction of template, and can adapt to advanced pump concrete placing technology.Therefore HDPE pipe constraint high performance concrete post can be simplified installation technology, reduce construction land tenure and reduction of erection time.
Compare with steel core concrete column, beneficial effect of the present invention is:
(1) antiseptic property is good.High density polyethylene (HDPE) (HDPE) is as member external maintenance material, and its abrasion resistance and tough elasticity are good, and the HDPE molecule does not have polarity, so chemical stability is good, the corrosion of the various acid of ability, alkali, cold-resistant, anti-solarization, wear-resistant is guaranteed more than 50 years application life.
(2) deformability of high density polyethylene pipe material is very strong, if concrete is poured into formation HDPE pipe confined concrete post in the HDPE pipe, has not only improved its elastic property in operational phase, and have very big plastic deformation ability when destroying.
(3) high density polyethylene pipe has obtained in fields such as combustion gas conveying, water supply, heat supply, building water supply and drainages using widely, has formed large-scale production, and compare the structure manufacture cost with steel pipe low.
Description of drawings:
Fig. 1 is the present invention---the cross-sectional view of high density polyethylene pipe post.
Number in the figure explanation: 1-high density polyethylene pipe; The 2-concrete.
Fig. 2 is the single shaft tension stress of two test specimens of high-density polyethylene material of the present invention---a strain empirical curve.
Fig. 3 is the contrast photo of member of the present invention at the forward and backward member of compression damage.
Fig. 4 be member of the present invention under pressurized, enter the plastic stage after, produce the photo of small deformation.
Fig. 5 be member of the present invention under pressurized, enter the plastic stage after, produce the photo of large deformation.
The specific embodiment:
The structure of high density polypropylene pipe concrete pole 1 of the present invention as shown in Figure 1, be followed successively by high density polyethylene pipe, concrete from outside to inside, it can be according to requirement of engineering, and choose reasonable high density polyethylene pipe wall thickness, member section size and length can be prefabricated in the factory.
High density polypropylene pipe concrete pole of the present invention has the advantage that deformability is strong, antiseptic property is good, has bigger application value, is particularly useful in the big building structure of abominable area of environment and deformation of member requirement.
Claims (3)
1. a high density polypropylene pipe concrete pole is characterized in that: fill concrete in high density polyethylene pipe, formation high density polypropylene pipe concrete pole.
2. high density polypropylene pipe concrete pole according to claim 1 is characterized in that: size requirements is different changes with distortion according to the circumferential tightening force of member in the Structural Engineering for above-specified high density polyethylene pipe wall thickness.
3. high density polypropylene pipe concrete pole according to claim 1 is characterized in that: above-mentioned strength grade of concrete adopts the different intensity grades concrete according to member anti-pressure ability difference in the Structural Engineering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027719 CN101050662A (en) | 2007-04-26 | 2007-04-26 | High density polypropylene pipe concrete pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710027719 CN101050662A (en) | 2007-04-26 | 2007-04-26 | High density polypropylene pipe concrete pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101050662A true CN101050662A (en) | 2007-10-10 |
Family
ID=38782242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710027719 Pending CN101050662A (en) | 2007-04-26 | 2007-04-26 | High density polypropylene pipe concrete pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101050662A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222374A (en) * | 2018-03-20 | 2018-06-29 | 广东工业大学 | A kind of concrete combination column |
| CN109779149A (en) * | 2019-01-15 | 2019-05-21 | 广东工业大学 | A kind of seawater sea sand concrete columns |
-
2007
- 2007-04-26 CN CN 200710027719 patent/CN101050662A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108222374A (en) * | 2018-03-20 | 2018-06-29 | 广东工业大学 | A kind of concrete combination column |
| CN109779149A (en) * | 2019-01-15 | 2019-05-21 | 广东工业大学 | A kind of seawater sea sand concrete columns |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |