CN107269019A - The device and method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column - Google Patents
The device and method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column Download PDFInfo
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- CN107269019A CN107269019A CN201710557559.8A CN201710557559A CN107269019A CN 107269019 A CN107269019 A CN 107269019A CN 201710557559 A CN201710557559 A CN 201710557559A CN 107269019 A CN107269019 A CN 107269019A
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- prefabricated pipe
- pipe section
- reinforced
- hoop
- high performance
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- 239000004567 concrete Substances 0.000 title claims abstract description 39
- 229920006253 high performance fiber Polymers 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000009958 sewing Methods 0.000 claims description 3
- 238000007906 compression Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007796 conventional method Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 7
- 230000002787 reinforcement Effects 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0225—Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing
Abstract
The invention discloses a kind of device and method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column.It is bolted to form hoop using nearly semicircular very-high performance fiber concrete (UHPFRC) prefabricated pipe section of two panels in post transverse direction, tightly parcel is reinforced on the outside of post, certain hoop constraint is provided, the vertical compression ability of reinforced column is improved indirectly；The longitudinally disposed rebate in section of jurisdiction, longitudinal hoop assembled from bottom to up, forms integral coating.The method for the UHPFRC prefabricated pipe section hoop constraint reinforced concrete columns that the present invention is provided has the advantages that small high capacity, sectional dimension, ductility and durability height, easy construction, cheap, easy to maintenance compared with conventional method.
Description
Technical field
The invention belongs to technical field of civil engineering, and in particular to a kind of very-high performance fiber concrete prefabricated pipe section ring
The device and method of restrained reinforcement concrete column.
Background technology
Reinforced concrete structure is during long-term use, internally, under the effect of outside and human factor, over time
Passage, by the aging of generating material and structural damage, the accumulation of this damage will cause under structural behaviour deterioration, bearing capacity
Drop, endurance quality reduction.In order that structure remains to meet requirement of the design specification on bearing capacity and normal usage energy, it is necessary to
These structures are reinforced and reinforcement.
At present, the reinforcing of concrete column generally has two methods：One is the method for the direct vertical compression ability for improving post,
Such as Enlargement of Section or steel bonding repairing method, certain vertical load is directly born by the section of increase or the shaped steel of stickup,
Therefore the overall anti-pressure ability for reinforcing rear pillar is improved.Two be the constraint by applying ring to concrete column, is improved indirectly
The method of the vertical compression ability of post, for example, paste high strength fibre cloth in shaft and reinforce.The fiber cloth of stickup is not born directly
Vertical pressure, but the circumferential expansion deformation that limitation concrete column occurs after being vertically pressurized, so as to produce the restraining force of ring.This
Planting restraining force can cause concrete column to be in three dimension stress state, and the vertical compression ability of the concrete column of three dimension stress can be obtained
To significantly improving, therefore reinforce the overall anti-pressure ability of rear pillar and be also improved.
There are constructional difficulties in existing reinforcement means, Enlargement of Section, steel bonding repairing method has durability using cast in situs
Difference, the reinforcing low deficiency of efficiency, need further to improve and develop.
Very-high performance fiber concrete (UHPFRC) is a kind of cement base steel fibre composite wood with superelevation mechanical property
Material, its compression strength is up to 200MPa, and tensile strength is up to 10MPa, and fracture toughness can match in excellence or beauty with metal, in the absence of steel bar corrosion
Problem, and with performances such as extremely strong corrosion resistance of chloride ion, anti-carbonation, freeze thawing resistance circulation and shock resistance blasts, it is conducted oneself with dignity and general
Logical concrete is more or less the same, and is a kind of preferable structural reinforcing material.Particularly in coastal area and extremely frigid zones, UHPFRC surpasses
High chloride resisting properties and freeze thawing resistance circulation ability, can be greatly enhanced the durability and service life of structure.
The content of the invention
It is an object of the invention to solve prior art to there is the reinforcement means of concrete column poor durability, reinforcing efficiency
Low defect, and a kind of device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column is provided, it is not
Be only capable of providing certain hoop constraint, and with it is economical, from heavy and light, reliable in quality, durability is strong, construction is simple, maintenance side
The series of advantages such as just.
Concrete technical scheme of the present invention is as follows：
A kind of device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column, if including dry plate by
The prefabricated pipe section that very-high performance fiber concrete is made, some prefabricated pipe sections head and the tail be spliced to form one can lock ring in being reinforced post
Outside hoop；The stitching portion of different prefabricated pipe sections is provided with the connector for being used for being coupled both sides prefabricated pipe section on hoop；Prefabricated pipe
Tenon shape structure is processed at the top of piece, bottom is processed into can be engaged fixed fourth of the twelve Earthly Branches shape structure with the tenon shape structure.
Preferably, described prefabricated pipe section is two panels, in semi-circular shape.
Further, described hoop internal diameter is slightly less than the external diameter for being reinforced post, hoop was formed with being reinforced post
It is full of cooperation.
Preferably, described connector includes projection and bolt, the sidepiece link position of prefabricated pipe section is provided with convex
For the projection of section of jurisdiction outer surface, bolt hole is opened up on projection, for inserting bolt to be coupled adjacent two panels prefabricated pipe section.
Preferably, described hoop has multiple, different hoops are longitudinally continuous splicing by joinery and its construction, are formed to quilt
The integral coating of reinforced column.
Further, the connecting sewing up and down on two continuous hoops staggers setting.
Preferably, it is that section is circular or rectangle to be reinforced post.
Another object of the present invention is to provide a kind of very-high performance fiber concrete prefabricated pipe section hoop constraint to reinforce mixed
The method of solidifying earth pillar, step is as follows：
S1, using very-high performance fiber concrete as material, be slightly less than according to the prefabricated internal diameter of the size for being reinforced post and be reinforced
The prefabricated pipe section of post external diameter, the surface for being reinforced post is carried out polishing processing, if then being close to be reinforced by dry plate prefabricated pipe section
Post one lock ring of formation is connected with two-by-two in the hoop being reinforced on post, and by the prefabricated pipe section in prefabricated pipe section, to quilt
Reinforced column applies certain hoop constraint；
S2, tenon shape structure and fourth of the twelve Earthly Branches shape structure by being respectively arranged at hoop top surface and bottom surface, according to S1 method under
Supreme simultaneously integral coating of continuously splicing several hoops is reinforced post.
The invention discloses a kind of device of prefabricated high-performance fiber concrete pipe sheet hoop constraint reinforced concrete column and
Method, is bolted to form hoop using some very-high performance fiber concrete (UHPFRC) prefabricated pipe sections, constrain in by
On the outside of reinforced column；Section of jurisdiction longitudinal direction sets rebate, and assembled hoop, forms close integral coating from bottom to up；Hoop
Diameter is slightly less than the diameter for being reinforced post, and specific size is determined according to design, applies certain hoop constraint by connecting bolt,
So that hoop is brought into close contact with being reinforced post, the vertical compression ability of reinforced column is improved indirectly.The UHPFRC that the present invention is provided
The method of prefabricated pipe section hoop constraint reinforced concrete column is compared with traditional reinforcement means, with high capacity, sectional dimension
The advantages of small, ductility and good endurance, easy construction, low cost.
Brief description of the drawings
Fig. 1 is is reinforced the structural representation of post in the present invention；
Fig. 2 is the structural representation of UHPFRC prefabricated pipe section hoop constraint reinforced concrete columns in the present invention；
Fig. 3 is the structural representation of single UHPFRC prefabricated pipe sections in the present invention；
Fig. 4 is is used to connect the screw rod schematic diagrames of UHPFRC prefabricated pipe sections in the present invention；
Fig. 5 connects into the structural representation of hoop for UHPFRC prefabricated pipe section rings in the present invention；
Fig. 6 is the structural representation of UHPFRC prefabricated pipe section prepared screw-bolt holes in the present invention；
Marginal data：It is reinforced post 1, prefabricated pipe section 2, hoop 3, tenon shape structure 4, bolt hole 5.
Embodiment
The present invention is further elaborated and illustrated with reference to the accompanying drawings and detailed description.Each in the present invention is implemented
The technical characteristic of mode can carry out respective combination on the premise of not colliding with each other.
As shown in figure 1, in the present embodiment, being reinforced post 1 in cylinder.As shown in Fig. 2 the very-high performance of the present invention is fine
The device for tieing up Concrete precast pipe element hoop constraint reinforced concrete column is tightly to be enclosed in be reinforced outside post 1 by several
Hoop 3 realize that each hoop 3 includes the prefabricated pipe section 2 that is made up of very-high performance fiber concrete of two panels.As shown in figure 3,
Prefabricated pipe section 2 is in be provided with the strip for protruding from section of jurisdiction outer surface on semi-circular shape, the arcuate end side wall of prefabricated pipe section 2
Bolt hole 5 is opened up on projection, projection, for inserting bolt to be coupled adjacent two panels prefabricated pipe section 2.Bolt and nut such as Fig. 4 institutes
Show.In use, two panels prefabricated pipe section 2 splices from beginning to end, formed one can lock ring in the annular hoop 3 being reinforced outside post.So
Bolt is inserted in backward bolt hole 5, nut is screwed on, the fixation to prefabricated pipe section 2 is realized, and ultimately form knot as shown in Figure 5
Structure.
Prefabricated pipe section 2 is when making, and contraposition deviation will be controlled in certain limit when reserved bolt hole 5 splices, in order to
Fixation is tightened with high intensity nut and nut.It should be designed for Bolt sizes according to different operating modes, meeting bonding strength will
Ask.
The internal diameter of hoop 3 should be slightly less than the external diameter for being reinforced post, hoop 3 is formed interference fit with being reinforced post, to quilt
Reinforced column 1 applies certain hoop constraint, improves the vertical compression ability for being reinforced post.The internal diameter of hoop 3 specifically can be according to required
The restraining force size of application is determined.
The integral coating of trying one's best of hoop 3 is reinforced the alien invasion of post, it is specific needed for number need to regard body height and hoop dimension
Depending on.It should keep tightly fitting between prefabricated pipe section inner surface and the outer surface for being reinforced post.And for hoop 3 above and below realizing
It is connected, the top of prefabricated pipe section 2 can be processed into tenon shape structure, bottom is processed into can be engaged admittedly with tenon shape structure
Fixed fourth of the twelve Earthly Branches shape structure, by joinery and its construction carry out above and below hoop 3 assembly.
In another embodiment, the connecting sewing up and down on two continuous hoops 3, which staggers, sets such as 90 degree differences, with the company of avoiding
Seam insertion, influences structural strength.
In the above-described embodiments, it is circle to be reinforced the section of post 1, but in a further embodiment, section can be other
The concrete column (such as rectangle) of shape, UHPFRC prefabricated pipe sections should make according to post section configuration is reinforced.Its inner surface should be able to
Enough it is close to the outer surface for being reinforced post 1, and interference fit can be realized after being bolted, pressure is applied to being reinforced post 1.
In the above-described embodiments, realized and connected by bolt between prefabricated pipe section 2, but in a further embodiment, can be with
Realized and connected by other connectors, such as buckle, Tenon, as long as the convenience of prefabricated pipe section 2, firm head and the tail can be realized
Connect.
In the above-described embodiments, prefabricated pipe section 2 is the two panels in semi-circular shape, but in a further embodiment, can be with
3 or the annular prefabricated pipe section of multi-disc fan are set, and head and the tail connection forms hoop.
UHPFRC can be prepared using method of the prior art.In one embodiment, UHPFRC component formula is：Water
Mud：Blast-furnace cinder micro-powder：Silica flour：Quartz sand：High efficiency water reducing agent：Water：Steel fibre=657： 418：119：1051：40：185：
157.UHPFRC material can be prepared via a method which：First by cement-based material dry mixing two minutes, be then slowly added into water and
Water reducer, after cement mortar stirs, is slowly added to steel fibre and stirs 10 minutes or so to being evenly distributed；Then pour in mould
In tool, and shaken 1 minute or so in shake table；Form removal after hardening one day at room temperature, such as needs higher early strength, can
To conserve a couple of days in 90 DEG C of curing boxes.It should be noted however that herein UHPFRC formula and preparation method only for ease of
Skilled artisan understands that and provide, be not intended to limit the present invention.
Based on above-mentioned bracing means, present invention also offers very-high performance fiber concrete prefabricated pipe section adaptable therewith
The method of hoop constraint reinforced concrete column, its step is as follows：
S1, using very-high performance fiber concrete as material, be slightly less than according to the prefabricated internal diameter of the size for being reinforced post and be reinforced
The prefabricated pipe section 2 of post external diameter, the surface for being reinforced post is carried out polishing processing (in order to closely connect with the inner surface of prefabricated pipe section 2
Touch), if dry plate prefabricated pipe section 2 then is close to be reinforced post one lock ring of formation in the hoop 3 being reinforced on post, and will be prefabricated
Prefabricated pipe section 2 in section of jurisdiction 2 is connected with two-by-two, and certain hoop constraint is applied to being reinforced post；
S2, tenon shape structure and fourth of the twelve Earthly Branches shape structure by being respectively arranged at the top surface of hoop 3 and bottom surface, according to S1 method under
It is supreme to be constructed, the continuously splicing and integral coating is reinforced post of several hoops 3 needs reinforcement position from being reinforced post
Bottom open up parcel prefabricated pipe section 2, be connected with into after hoop 3, based on the hoop 3, up pass through tenon
Fourth of the twelve Earthly Branches structure connects the other blending bolt of two panels prefabricated pipe section 2 and connects into second hoop 3, and construction is until integral coating owns successively
Treat reinforcing area.
Using the anti-carbonation of UHPFRC material superelevation, chloride resisting properties and freeze thawing resistance circulation ability, to being reinforced
Post is carried out after integral coating, can increase substantially the durability and service life of structure so that the reinforcement means is especially suitable for
Used in coastal and extremely frigid zones.
In general, the present invention can reduce site operation difficulty, on the premise of certain hoop constraint is provided, after reinforcing
Concrete column has excellent fire resistance, the high-durability of superelevation and the low feature of later maintenance cost, and is improving concrete
Its antidetonation, shock resistance and the capability of antidetonance are improved while columns bearing capacity.Meanwhile, reinforced construction method of the present invention is simple to operate, effect
Rate is high, and quality is easily guaranteed that.
Embodiment described above is a kind of preferably scheme of the present invention, and so it is not intended to limiting the invention.Have
The those of ordinary skill for closing technical field, without departing from the spirit and scope of the present invention, can also make various changes
Change and modification.Therefore the technical scheme that all modes for taking equivalent substitution or equivalent transformation are obtained, all falls within the guarantor of the present invention
In the range of shield.
Claims (8)
1. a kind of device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column, it is characterised in that bag
If including the prefabricated pipe section (2) that dry plate is made up of very-high performance fiber concrete, some prefabricated pipe sections (2) are spliced to form one from beginning to end
Can lock ring in being reinforced the outside hoop (3) of post (1)；The stitching portion of different prefabricated pipe sections (2), which is provided with, on hoop (3) is used to be coupled
The connector of both sides prefabricated pipe section (2)；Be processed into tenon shape structure at the top of prefabricated pipe section (2), bottom be processed into can with it is described
Tenon shape structure is engaged fixed fourth of the twelve Earthly Branches shape structure.
2. the device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column as claimed in claim 1,
Characterized in that, described prefabricated pipe section (2) is two panels, in semi-circular shape.
3. the device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column as claimed in claim 2,
Characterized in that, described hoop (3) internal diameter is slightly less than the external diameter for being reinforced post (1), makes hoop (3) and be reinforced post (1) energy
Form interference fit.
4. the device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column as claimed in claim 1,
Characterized in that, described connector includes projection and bolt, the sidepiece link position of prefabricated pipe section (2), which is provided with, to be protruded from
Bolt hole (5) is opened up on the projection of section of jurisdiction outer surface, projection, for inserting bolt to be coupled adjacent two panels prefabricated pipe section (2).
5. the device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column as claimed in claim 1,
Characterized in that, described hoop (3) has multiple, different hoops (3) are longitudinally continuous splicing by joinery and its construction, are formed to quilt
The integral coating of reinforced column (1).
6. the device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column as claimed in claim 5,
Characterized in that, the connecting sewing on two continuous hoops (3) staggers setting up and down.
7. the device of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column as claimed in claim 1,
Characterized in that, it is that section is circular or rectangle to be reinforced post (1).
8. a kind of method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column, it is characterised in that step
It is rapid as follows：
S1, using very-high performance fiber concrete as material, be slightly less than according to the prefabricated internal diameter of size for being reinforced post (1) and be reinforced post
(1) prefabricated pipe section (2) of external diameter, the surface for being reinforced post (1) is carried out polishing processing, if then by dry plate prefabricated pipe section (2)
It is close to be reinforced post (1) one lock ring of formation in the hoop (3) being reinforced on post (1), and by the prefabricated pipe in prefabricated pipe section (2)
Piece (2) is connected with two-by-two, and certain hoop constraint is applied to being reinforced post (1)；
S2, tenon shape structure and fourth of the twelve Earthly Branches shape structure by being respectively arranged at hoop (3) top surface and bottom surface, according to S1 method by it is lower extremely
On by several hoops (3) continuously splicing and integral coating be reinforced post (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557559.8A CN107269019A (en) | 2017-07-10 | 2017-07-10 | The device and method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710557559.8A CN107269019A (en) | 2017-07-10 | 2017-07-10 | The device and method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column |
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| Publication Number | Publication Date |
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| CN107269019A true CN107269019A (en) | 2017-10-20 |
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ID=60072436
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710557559.8A Pending CN107269019A (en) | 2017-07-10 | 2017-07-10 | The device and method of very-high performance fiber concrete prefabricated pipe section hoop constraint reinforced concrete column |
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| Country | Link |
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| CN (1) | CN107269019A (en) |
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| CN108547468A (en) * | 2018-03-27 | 2018-09-18 | 福建工程学院 | A kind of reinforced steel concrete column and its construction method |
| CN108894432A (en) * | 2018-07-19 | 2018-11-27 | 浙江大学 | A kind of very-high performance steel fiber concrete pipe constraint regeneration monolith column |
| CN113323429A (en) * | 2021-01-26 | 2021-08-31 | 上海交通大学 | Device and method for fully prefabricated reinforced concrete structure |
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Application publication date: 20171020 |
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