CN106436588A - Concrete pier/column reinforcing device based on aluminum alloy and construction method thereof - Google Patents
Concrete pier/column reinforcing device based on aluminum alloy and construction method thereof Download PDFInfo
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- CN106436588A CN106436588A CN201610890874.8A CN201610890874A CN106436588A CN 106436588 A CN106436588 A CN 106436588A CN 201610890874 A CN201610890874 A CN 201610890874A CN 106436588 A CN106436588 A CN 106436588A
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- aluminium alloy
- concrete pier
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a concrete pier/column reinforcing device based on aluminum alloy. The reinforcing device is of a rectangular structure defined by four special-shaped hollow aluminum alloy plates and is arranged outside a concrete pier/column in a sleeving mode. Every two adjacent special-shaped hollow aluminum alloy plates are in welded or bolt connection. Structural adhesives are poured between the inner wall of the rectangular structure and the outer wall of the concrete pier/column. The rectangular structure and the concrete pier/column are fastened through bolts. The reinforcing device is diversified in structural form, has good corrosion resistance and durability, and is low in weight, high in strength, convenient to manufacture, machine, transport and mount, easy to construct and low in cost.
Description
Technical field
The invention belongs to bridge structure technical field, reinforce dress particularly to a kind of concrete pier/post based on aluminium alloy
Put and its construction method.
Background technology
The advantages of concrete is with its superior pressure-bearing, the cost performance of fire prevention, abundant material source and economy becomes to be worked as
Modern most widely used construction material, but in Practical Project, usually because design is inconsiderate, construction quality is poor, job site pipe
Reason such as is not good at the reason, leads to reinforcing bar mix knoll/columns bearing capacity not enough, also has fire to make reinforcing bar mixed the reason cause Lack of support
The concrete of solidifying earth pillar and reinforced steel bar strength reduce, or so that the load that post bears is increased using function etc. due to change structure
Deng.When this occurs, reinforced column need to be reinforced.The reinforcing mode of reinforced concrete knoll/post has a lot,
And conventional traditional reinforcing mode has external wrapping concrete method for strengthening and outside steel pipe method for strengthening.
External wrapping concrete method for strengthening, pours certain thickness concrete around pier, post, pier, post is wrapped up, and is formed
, there is shortcoming or problem in overall stress：Bearing capacity raising to pier, post is limited；The resistance to compression that concrete can not be given full play to is excellent
Gesture；There are endurance issues, especially coastal area in external wrapping concrete；The connection of new-old concrete is difficult to ensure that；After reinforcing, no
Facilitate pier, the secondary maintenance in the post service life cycle.
Outside steel pipe method for strengthening, pours certain thickness concrete around pier, post, and Covered with Angles outside concrete
Pipe, forms entirety and carries out stress, there is shortcoming or problem：There are endurance issues in outside steel pipe, the later stage needs more expense
Carry out Corrosion Maintenance, especially coastal area；It has not been convenient to pier, the secondary maintenance in the post service life cycle after reinforcing；Structure shape
Formula is single, and bearing power increase is limited.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of variation of version, has good corrosion resistance and resistance to
Property long, high-strength light, lightweight, it is easy to make, process, transport and install, construction is simple, the mixing based on aluminium alloy of low cost
Solidifying knoll/post bracing means and its construction method.
The present invention employs the following technical solutions solution above-mentioned technical problem：
A kind of concrete pier/post bracing means based on aluminium alloy, described bracing means is four blocks of special-shaped hollow aluminium alloys
Plate surrounds a rectangular configuration, is enclosed within outside described concrete pier/post, welding or spiral shell between adjacent two pieces special-shaped hollow aluminium alloy plates
Tether and connect；Reperfusion structure glue between rectangular configuration inwall and described concrete pier/column outer wall, rectangular configuration and described concrete
Pier/post is fastened by bolts.
Described abnormity hollow aluminium alloy plate, its cross sectional shape is abnormity, filling concrete in special-shaped hollow aluminium alloy plate.
A kind of construction method of described concrete pier/post bracing means based on aluminium alloy, step is as follows：
1. concrete pier/post stabilization zone surface treatment：
Cut the top layer mortar of concrete pier/post stabilization zone, form smooth matsurface and simultaneously clean out, again with toluene or
Industrial acetone wipes stabilization zone surface；
2. hole：Concrete pier/post is holed and planted and buries bolt；
3. bracing means is installed：
According to design requirement processing described abnormity hollow aluminium alloy plate, the sticking veneer of special-shaped hollow aluminium alloy plate is removed
Rust processes and cleans out with coarse；Special-shaped hollow aluminium alloy plate is installed to step 2. concrete pier/post after supporting punching
Plant on the bolt burying；After described concrete pier/post is surrounded by four pieces of installation above-mentioned abnormity hollow aluminium alloy plates, four pieces of abnormity
It is welded or bolted between hollow aluminium alloy plate and couple together；Outside the sticking veneer of special-shaped hollow aluminium alloy plate and concrete pier/post
The gap of 1～3mm is left between surface；
4. edge sealing：Hole for injecting glue is bored on step 3. mounted bracing means；Insert in the aluminium alloy plate apical margin of bracing means
Enter exhaustor, with closing the aluminium alloy plate edge of glue closed reinforcement device；
5. prepare structure glue；
6. reperfusion structure glue：By step, hole for injecting glue 4. is filled into special-shaped hollow aluminum to the structure glue that 5. step is prepared
In gap between the sticking veneer of alloy sheets and concrete pier/outer surface of column, until exhaustor has glue to flow out；
7. concrete perfusion
To using the bracing means of special-shaped hollow aluminium alloy plate and need concrete perfusion, concrete is filled from below to up
Note in the special-shaped hollow aluminium alloy plate of bracing means it is ensured that tight, no cavity.
Described step 1. in cut the thick top layer mortar of concrete pier/post stabilization zone 2～5mm.
The beneficial effects of the present invention is：
(1) present invention forms the bracing means of concrete pier/post using special-shaped hollow aluminium alloy plate, makes concrete pier/post
Cross sectional shape variation, enables different consolidation effects；
(2) bracing means of the present invention adopts aluminium alloy plate, has good corrosion resistance and durability, is especially suitable for coastal
The concrete pier in area, post etc., can save substantial amounts of later stage Corrosion Maintenance expense；
(3) present invention forms the bracing means of concrete pier/post using special-shaped hollow aluminium alloy plate, and filling in aluminium alloy mixes
Solidifying soil, the two be combined with each other, and can each play the advantage of oneself, realizes having complementary advantages；
(4) bracing means of the present invention adopts aluminium alloy plate, and density is the 1/3 of steel density, and high-strength light is lightweight, just
In making, processing, transport and installation.
Brief description
Fig. 1 to Fig. 5 is the bracing means schematic cross-section that is installed on concrete pier of different cross section shape of the present invention,
In figure,
1：Bracing means；2nd, bolt；3：Concrete pier；4：Concrete.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the specific embodiment of the present invention is elaborated, but do not constitute to this
Inventor's patent right
The restriction of the claimed scope of profit.
Embodiment 1：
As shown in figure 1, a kind of concrete pier bracing means based on aluminium alloy, it is that four pieces of special-shaped hollow aluminium alloy plates enclose
Become a rectangular configuration, be enclosed within outside described concrete pier 3, between adjacent two pieces special-shaped hollow aluminium alloy plates, welding or bolt connect
Connect；Reperfusion structure glue between rectangular configuration inwall and described concrete pier 3 outer wall, rectangular configuration is passed through with described concrete pier 3
Bolt 2 fastens.
As shown in Figures 1 to 5, the cross sectional shape of special-shaped hollow aluminium alloy plate is different abnormity, to realize different adding
Gu the version of concrete pier, obtain different consolidation effects.
Construction method is as follows：
1. concrete surface is processed
Release on the surface needing reinforced concrete bridge pier and reinforce position full-page proof, cut stabilization zone concrete surface 2～5mm thick
Top layer mortar, make exposed concrete, and form smooth matsurface, at uneven surface application diamond bit soft peening leveling.Use steel again
Silk wheel removes surface laitance, rejects top layer loose matter, finally blows off surface dust with compressed air, and with toluene or industrial acetone
Wipe stabilization zone surface.Layer inferior to larger area, is repaired with polymer cement mortar smooth, uses acetone before reinforcing after rejecting
Scrub.
2. hole
Prepare：Check whether concrete pier surface is intact, visit instrument detection with reinforcing bar and find out that reinforcing bar is distributed, check labelling anchor
Spigot position；
Boring：Data requirement according to the diameter of bolt according to technical parameter table, according to the corresponding depth of diameter in concrete
Punch on bridge pier, check that aperture and hole depth meet design requirement；
Borehole cleaning：Using compressed air borehole cleaning, with hairbrush brush three times, blow three times it is ensured that hole wall is dustless.Can use clean if necessary
Cotton is stained with a small amount of acetone or wipes of alcohol clear opening wall.
Confirm the abnormal phenomenas such as damaged, the medicament solidification of anchoring bag no outward appearance, put it into hole and be pushed into bottom hole.
Using electric hammer or electric drill and special installs fixture, bolt strength is rotatably inserted into until bottom hole, smashes glass to reach
Glass pipe the purpose of strength mixing anchoring medicament.The rotating speed of electric hammer or electric drill should be adjusted to shelves at a slow speed, and should not adopt impact mode.
When being threaded to mark position on bottom hole or bolt, stop the rotation at once, take off installs fixture, to completely solid after gel
Disturbance is avoided before change.Time-out rotation will lead to glue to run off, and affect anchor force.
Whether visual examination solidification is normal.The bolt of significant points need to carry out live pullout tests, checks its anchor force to be
No meet design requirement, qualified after can carry out the construction of next process.
3. bracing means is installed
According to the actual setting-out of on-site concrete bridge pier carry out the special-shaped hollow aluminium alloy plate blanking of described bracing means with
Processing, and plant, according to scene, the bolt burying, supporting punching is carried out to described abnormity hollow aluminium alloy plate, then by described abnormity
The sticking veneer of empty aluminium alloy plate with polishing abrasive machine or steel wire brush grinding machine carry out rust cleaning and coarse process, polishing roughness more big more
Good, polishing lines should be vertical with bracing means Impact direction.Being stained with acetone with absorbent cotton will be clean for bracing means surface wipes.By four
Block abnormity hollow aluminium alloy plate is respectively fixed to step and 2. plants to be wrapped concrete pier on the bolt burying, four pieces of special-shaped hollows
Welding between aluminium alloy plate it is ensured that the gap of the sticking veneer of special-shaped hollow aluminium alloy plate and concrete pier outer surface be 1～
3mm, to guarantee to irrigate the thickness of glue-line.
4. edge sealing
Hole for injecting glue is bored on bracing means；Injecting socket is bonded on the hole for injecting glue hole of bracing means, in bracing means
Aluminium alloy plate apical margin inserts exhaustor, and exhaust outlet should be higher than that the bracing means position of this perfusion section；Bolt head is smeared
Closing glue simultaneously covers teabowl with a cover, then uses the aluminium alloy plate edge of edge sealing adhesive closed reinforcement device, completes edge sealing.
5. structure glue is prepared
Prepare structure glue on request, structure glue low-speed agitator stirs, is finished within working life.Structure glue
Should complete in edge sealing, and bracing means edge sealing adhesive reaches and prepared after being fully cured enough intensity again and use.
6. irrigate
5. from step, hole for injecting glue 4. is filled into the viscous of special-shaped hollow aluminium alloy plate to the structure glue being prepared step with pump
In the gap of veneer and concrete pier outer surface, until all exhaustors all have glue to flow out.In filling process, use rubber
It is closely knit to be confirmed whether to irrigate that hammer beats special-shaped hollow aluminium alloy plate.First ventilate pressure testing before requiring grouting, with 0.2～0.4MPa
Pressure structure glue is pressed into from injecting socket, stop pressurization after serosity in exhaustor, with edge sealing adhesive plug-hole, then with compared with low pressure
Power maintains more than 10 minutes, until serosity flows out from the top hole for injecting glue or exhaustor.
7. concrete perfusion
As shown in Figures 3 to 5, to the bracing means concrete perfusion needing concrete perfusion, the perfusion of concrete adopts
Method from below to up is it is ensured that tight, no empty.
Consolidation effect：
1st, force analysis is carried out to bracing means as shown in Figure 4, reinforced using the little example of 10m high diplopore Thin-Wall Piers
Recruitment evaluation, sets up structural finite element model using ANSYS finite element software.
(1) material behavior
Former bridge pier structure concrete adopts C30, density 2500kg/m3, Poisson's ratio 0.3, elastic modelling quantity 30GPa；
In aluminium alloy, concrete perfusion adopts C50, density 2500kg/m3, Poisson's ratio 0.3, elastic modelling quantity 34.5GPa；
Aluminium alloy is 6061-T6, and thickness is 1cm, density 2710kg/m3, Poisson's ratio 0.3, elastic modelling quantity 72GPa.
(2) the way of restraint
Bridge pier bottom enters row constraint in the form of fixing end.
(3) load
Dead load, acceleration of gravity 9.8m/s2；
Vertical load suffered by bridge pier is 1000KN.
(4) model cross sectional shape：As shown in Figure 4.
2 result of calculations
Before and after reinforcing, self-vibration characteristic comparing result is shown in Table 1, and as can be seen from Table 1, after reinforcing, the natural frequency of vibration of T beam obtains
Different degrees of raising, that is, the rigidity of pier stud be improved.
Before and after table 1 is reinforced, self-vibration characteristic result of calculation contrasts
Amount of deflection contrast before and after reinforcing：
Main Function due to pier stud is subject to vertical load, in gravity load and 1000KN vertical load collective effect
Under, carry out static analysis, the results are shown in Table 2.
Before and after table 2 is reinforced, amount of deflection calculates Comparative result
Stress contrast before and after reinforcing：
Main Function due to pier stud is subject to vertical load, in gravity load and 1000KN vertical load collective effect
Under, carry out static analysis, the results are shown in Table 3.
Before and after table 3 is reinforced, stress calculating results contrast
Claims (4)
1. a kind of concrete pier/post bracing means based on aluminium alloy it is characterised in that：Described bracing means is in four pieces of abnormity
Empty aluminium alloy plate surrounds a rectangular configuration, is enclosed within outside described concrete pier/post, between adjacent two pieces special-shaped hollow aluminium alloy plates
Welding or bolt connection；Reperfusion structure glue between rectangular configuration inwall and described concrete pier/column outer wall, rectangular configuration with described
Concrete pier/post is fastened by bolts.
2. as claimed in claim 1 a kind of concrete pier/post bracing means based on aluminium alloy it is characterised in that：Described different
Shape hollow aluminium alloy plate, its cross sectional shape is abnormity, filling concrete in special-shaped hollow aluminium alloy plate.
3. a kind of construction method of the concrete pier/post bracing means based on aluminium alloy as claimed in claim 1 or 2, it is special
Levy and be, step is as follows：
1. concrete pier/post stabilization zone surface treatment：
Cut the top layer mortar of concrete pier/post stabilization zone, form smooth matsurface and simultaneously clean out, again with toluene or industry
Acetone wipes stabilization zone surface；
2. hole：Concrete pier/post is holed and planted and buries bolt；
3. bracing means is installed：
According to design requirement processing described abnormity hollow aluminium alloy plate, by the sticking veneer of special-shaped hollow aluminium alloy plate carry out rust cleaning and
Coarse process and clean out；2. concrete pier/post plant is buried to be installed to step after supporting punching on special-shaped hollow aluminium alloy plate
Bolt on；After described concrete pier/post is surrounded by four pieces of installation above-mentioned abnormity hollow aluminium alloy plates, four pieces of special-shaped hollows
It is welded or bolted between aluminium alloy plate and couple together；The sticking veneer of special-shaped hollow aluminium alloy plate and concrete pier/outer surface of column
Between leave the gap of 1～3mm；
4. edge sealing：Hole for injecting glue is bored on step 3. mounted bracing means；Aluminium alloy plate apical margin insertion row in bracing means
Trachea, with closing the aluminium alloy plate edge of glue closed reinforcement device；
5. prepare structure glue；
6. reperfusion structure glue：By step, hole for injecting glue 4. is filled into special-shaped hollow aluminium alloy to the structure glue that 5. step is prepared
In gap between the sticking veneer of plate and concrete pier/outer surface of column, until exhaustor has glue to flow out；
7. concrete perfusion
To using the bracing means of special-shaped hollow aluminium alloy plate and need concrete perfusion, concrete is poured into from below to up
In the special-shaped hollow aluminium alloy plate of bracing means it is ensured that tight, no cavity.
4. as claimed in claim 3 a kind of construction method of the special-shaped bracing means of beams of concrete it is characterised in that described step
Rapid 1. in cut the thick top layer mortar of concrete pier/post stabilization zone 2～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610890874.8A CN106436588B (en) | 2016-10-12 | 2016-10-12 | A kind of concrete pier based on aluminium alloy/column bracing means and its construction method |
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| CN201610890874.8A CN106436588B (en) | 2016-10-12 | 2016-10-12 | A kind of concrete pier based on aluminium alloy/column bracing means and its construction method |
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| CN106436588B CN106436588B (en) | 2019-03-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824227A (en) * | 2018-08-28 | 2018-11-16 | 南京林业大学 | A kind of aluminum alloy coiled materials reinforcing pillarwork |
| CN108824225A (en) * | 2018-08-09 | 2018-11-16 | 长安大学 | A kind of hardened system and reinforcement means of reinforced column |
| CN109596113A (en) * | 2019-01-14 | 2019-04-09 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of guard method and device for protecting concrete face rockfill dam Three-direction gap detector |
| CN109856143A (en) * | 2019-03-07 | 2019-06-07 | 通标标准技术服务(上海)有限公司 | A method of detection prefabricated concrete structure sleeve grouting quality |
| CN113638325A (en) * | 2021-08-06 | 2021-11-12 | 广西大学 | Steel structure fatigue crack reinforcing structure and reinforcing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824225A (en) * | 2018-08-09 | 2018-11-16 | 长安大学 | A kind of hardened system and reinforcement means of reinforced column |
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| CN109856143A (en) * | 2019-03-07 | 2019-06-07 | 通标标准技术服务(上海)有限公司 | A method of detection prefabricated concrete structure sleeve grouting quality |
| CN109856143B (en) * | 2019-03-07 | 2023-09-19 | 通标标准技术服务(上海)有限公司 | Method for detecting grouting quality of sleeve of fabricated concrete structure |
| CN113638325A (en) * | 2021-08-06 | 2021-11-12 | 广西大学 | Steel structure fatigue crack reinforcing structure and reinforcing method thereof |
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| CN106436588B (en) | 2019-03-26 |
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