CN109702873A - A kind of magnetic force mounting device and the method for big height facade structures concrete curing - Google Patents
A kind of magnetic force mounting device and the method for big height facade structures concrete curing Download PDFInfo
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- CN109702873A CN109702873A CN201910093661.6A CN201910093661A CN109702873A CN 109702873 A CN109702873 A CN 109702873A CN 201910093661 A CN201910093661 A CN 201910093661A CN 109702873 A CN109702873 A CN 109702873A
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Abstract
The present invention relates to concrete curing technical fields, and in particular to a kind of magnetic force mounting device and the method conserved with it to big height facade structures concrete.A kind of magnetic force mounting device, including magnetic means and mobile device, mobile device are connect with magnetic means, and the mobile device drives magnetic means mobile.A kind of maintenance process of big height facade structures concrete is that the fixed surface for fitting in big height facade structures concrete of protection structure is rested by any of the above-described magnetic force mounting device；The maintenance structure includes insulating layer, moisturizing layer and self-adhesion structure.Magnetic force mounting device of the invention can form strong magnetic force cooperation with the reinforcing bar in concrete structure, in the case that magnetic force mounting device constantly moves, it is pressed together on concrete surface with can making concrete curing close structure, to make the self-adhesion structure preferably form sticky connection with concrete surface, especially in the environment of strong wind, it can complete to construct more conveniently.
Description
Technical field
The present invention relates to concrete curing technical fields, and in particular to a kind of magnetic force mounting device and vertical to big height with it
The method that face structural concrete is conserved.
Background technique
Main material one of of the concrete as engineering structure, the service life and safety of performance and quality concerning building body
Property, it therefore, in addition to the performance of optimised coagulation soil itself, also needs to carry out it reasonable maintenance within the construction time, for example, some big
Under the environment such as wind, strong sunshine, the cracking risk of concrete is larger.The heat and moisture preserving maintenance of planar structure concrete is comparatively just
Benefit, moisture-keeping maintaining can directly sprinkle water, water storage etc., and insulated curing can directly adopt thermal insulation material covering, but facade structures concrete
Maintenance it is then more difficult, facade structures can not water storage, and it is easy when hang thermal insulation material influenced by wind and rain etc., especially
Height is greater than the facade structures concrete of 4m, and maintenance construction is not easy, and is difficult to reach good maintenance effect, is with bridge main tower
Example, structure height is usually in 100m or more, and every layer of pouring construction height, in 4~6m, upper-level winds is big and sunshine is strong, mixes
Heat loss is extremely rapid after solidifying soil demoulding, and concrete water evaporation is also very fast, leads to the thermal cracking of king-tower structural concrete
It is commonplace with desciccation crack.
It is to overcome the influence of strong wind atmosphere for the key technology of the maintenance of the biggish facade structures concrete of height, and
Concrete surface can be made to keep higher humidity for a long time, currently available technology is not possible to realize, therefore very it is necessary to develop one
Kind can be used for facade structures, especially the maintenance facility of big height facade structures concrete of the height greater than 4m and maintenance process.
Summary of the invention
The invention proposes a kind of magnetic force mounting device and the sides conserved with it to big height facade structures concrete
Method efficiently solves the problems, such as that big height facade concrete structure maintenance work is difficult.
The specific technical solution of the present invention is as follows:
A kind of magnetic force mounting device, including magnetic means and mobile device, mobile device are connect with magnetic means, the shifting
Dynamic device drives magnetic means mobile.
Wherein, the magnetic force mounting device further includes shell, support rod, and the magnetic means, support rod are arranged in shell
Interior, the both ends of support rod are arranged in the magnetic means.
Wherein, the magnetic means is electromagnet or strong magnet.
It wherein, further include power supply when magnetic means is electromagnet.
Wherein, the power supply is remote circuit.
Wherein, the mobile device includes wire rope handling lifting hole(eyelet) and lifting rope, and the outside of shell is arranged in the wire rope handling lifting hole(eyelet), described
Lifting rope passes through wire rope handling lifting hole(eyelet) and is fixed, and the lifting rope passes through wire rope handling lifting hole(eyelet) and extends downwardly.
A kind of maintenance process of big height facade structures concrete is rested by any of the above-described magnetic force mounting device
The fixed surface for fitting in big height facade structures concrete of protection structure；The maintenance structure include insulating layer, moisturizing layer and from
Bond structure.
Wherein, the maintenance process of the concrete, includes the following steps,
1) the moisturizing layer for moistening the maintenance structure, rests protection structure and is covered on concrete structural surface；
2) protection structure is rested using any of the above-described magnetic force mounting device be pressed on concrete structural surface；
3) the mobile magnetic force mounting device of compaction is kept in maintenance body structure surface；
4) after maintenance structure is installed, magnetic force mounting device is removed.
Wherein, the step 1) is to rest protection structure by suspended structure and hang over concrete structure embedded bar outstanding
On, maintenance structure is unfolded to be covered on concrete structural surface because of self weight.
Wherein, the suspended structure includes conserving the hanging hole and hanger of structure top end setting, the hanger and outstanding
Hanging hole connection.
Wherein, the step 2) is,
When magnetic means is electromagnet, magnetic force mounting device is suspended on embedded bar by lifting rope；
Power supply is opened, the magnetic force mounting device is because magnetic-adsorption is pressed in concrete surface.
Wherein, the step 2) are as follows:
When magnetic means is strong magnet, magnetic force mounting device is suspended on embedded bar by lifting rope.
Wherein, the step 3) is, by pulling lifting rope, to keep magnetic force mounting device mobile.
Wherein, before step 1), can with the following steps are included:
Step 1: concrete surface layer temperature, concrete central temperature and environment temperature are obtained；
Step 2: reach Wen Fenghou in concrete central temperature and be no less than 10h, dismantling concrete template.
Wherein, the step 3) is, when the difference of the central temperature of concrete and environment temperature is less than 1.5 DEG C, to remove and support
Protection structure.
Wherein, in dismantling concrete template 2 hours, and the difference of the central temperature of concrete and skin temperature is not more than 25
In the case where DEG C, it is bonded the maintenance structure.
The utility model has the advantages that
A kind of method of big height facade structures concrete curing provided by the invention, efficiently solves big height facade knot
The maintenance problem of structure concrete.Wherein, magnetic force mounting device of the invention can be formed strong with the reinforcing bar in concrete structure
Magnetic force cooperation is pressed together on concrete table with can making concrete curing close structure in the case that magnetic force mounting device constantly moves
It face, can be compared with especially in the environment of strong wind so that the self-adhesion structure be made preferably to form sticky connection with concrete surface
Easily to complete to construct.
Detailed description of the invention
Fig. 1 is the schematic diagram of the magnetic force mounting device.
Fig. 2 is the schematic diagram of internal structure of the magnetic force mounting device.
Fig. 3 is the top view of the magnetic force mounting device.
Fig. 4 uses schematic diagram for magnetic force mounting device described in embodiment 5.
Fig. 5 is the maintenance situation of concrete described in embodiment 7.
Wherein, 1 is maintenance structure, and 2 be suspended structure, and 3 be embedded bar, and 7 be magnetic force mounting device, and 8 be lifting rope, and 21 are
Magnetic means, 22 be wire rope handling lifting hole(eyelet), and 23 be shell, and 24 be support rod, and 25 be remote circuit.
Specific embodiment
The following content is the method for big height facade structures concrete curing of the present invention is described in detail.
In the present embodiment, the maintenance structure setting to be mounted has insulating layer, moisturizing layer and self-adhesion structure, the self-adhesion
Structure can be seamless sticker, and the seamless sticker is a kind of polyurethane material, have the property that can be pasted repeatedly, and this
Comparable viscosity is still able to maintain in the case of getting wet.The present invention be directed to this, and the maintenance structure with self-adhesion structure carries out
Description.
Embodiment 1
A kind of magnetic force mounting device 7 of the present invention, including magnetic means 21 and mobile device, the mobile device with
Magnetic means 21 connects, and the mobile device drives magnetic means 21 mobile.Reinforcing bar in magnetic means 21 and concrete generates
Magnetic force, can make conserve close structure be pressed together on concrete surface.By mobile device, magnetic force mounting device 7 is tied in maintenance
1 surface of structure is constantly moved, to realize that all parts of maintenance structure 1 can be all compacted.
Such as Fig. 1, Fig. 2, shown in Fig. 3, the magnetic force mounting device 7 can also include shell 23, support rod 24, the magnetic force
Device 21, support rod 24 are arranged in shell 23, and the both ends of support rod 24 are arranged in the magnetic means 21.Being arranged such can be with
Preferably magnetic force mounting device 7 is pressed in maintenance structure.
Embodiment 2
On the basis of embodiment 1, the magnetic means 21 can choose electromagnet or strong magnet.It is wherein preferred, we
Source of the electromagnet as magnetic force is selected, electromagnet compares strong magnet, ferromagnetism is generated when being powered, when power is off then without strong
It is magnetic, it is ensured that its magnetic means can generate at work it is ferromagnetic under the premise of, avoid magnetic means and be adsorbed onto other gold
Belong to the problem of leading to not smooth construction in structure.
When magnetic means 21 is electromagnet, the magnetic force mounting device 7 further includes power supply 25.Wherein preferably, the electricity
Source 25 is remote circuit, and remote control operation can increase convenience for electromagnet power supply, simplify the use step of magnetic force mounting device 7
Suddenly.
Embodiment 3
According to magnetic force mounting device 7 described in embodiment 1, such as Fig. 3, shown in Fig. 4, the mobile device includes wire rope handling lifting hole(eyelet)
22 and lifting rope 8, the wire rope handling lifting hole(eyelet) 22 outside of shell 23 is set, the lifting rope 8 is passed through and is bundled on wire rope handling lifting hole(eyelet) 22.Institute
Lifting rope 8 is stated after fixed wire rope handling lifting hole(eyelet) 22, continues to extend downwardly.By the pulling of lifting rope 8, magnetic force mounting device can be adjusted
7 position.This mobile device structure is simple, easy to use, is convenient for execute-in-place.
Embodiment 4
For the prior art due to big height facade structures, wind is too big, and maintenance structure is blown up, and can not fit in concrete table
Face, traditional maintenance process are not available at all at this time.For this purpose, using any magnetic force described in embodiment 1-3 in the present embodiment
Mounting device 7 rests protection structure and is fitted in concrete surface, successfully solves the problems, such as big height facade structures concrete curing.
The method of the big height facade structures concrete curing specifically includes following steps,
1) the moisturizing layer for moistening the maintenance structure, rests protection structure and is covered on concrete structural surface；
2) protection structure is rested using the magnetic force mounting device 7 in above-described embodiment be pressed on concrete structural surface；
3) the mobile magnetic force mounting device 7 of compaction is kept in maintenance body structure surface；
4) after maintenance structure is installed, magnetic force mounting device 7 is removed.
By pressing for magnetic force mounting device 7, realizes and rest the seamless sticker of protection structure 1 and be pressed on concrete surface
Effect, so as to properly complete the maintenance of big height facade structures concrete.
Embodiment 5
According to the method for big height facade structures concrete curing as described in example 4, structure 1 is conserved in the step 1)
It is covered on concrete structural surface to refer to, the mixed of big height facade is hung over by suspended structure 2 as shown in figure 4, resting protection structure 1
On solidifying soil embedded bar 3 outstanding, the suspended structure 2 includes the hanging hole and hanger of maintenance 1 top of structure setting, described
Hanger one end tangles the hanging hole of maintenance structure 1, and the other end is hung on embedded bar 3.The hanger can for suspension hook or
Person's iron wire.Maintenance structure 1 is draped down by gravity and is fully deployed and is covered on the concrete structural surface of big height facade.
The mode of this suspension covering more adapts to engineering reality, easy to operate.
The step 2) refers to, is put down magnetic force mounting device 7 along maintenance structure 1 by lifting rope 8, magnetic means 21 produces
Raw ferromagnetism, forms strong magnetic connection with the bar construction in concrete.When magnetic means 21 is electromagnet, magnetic force is installed
Device 7 is suspended on embedded bar 3 by lifting rope 8；Power supply 25 is opened, the magnetic force mounting device 7 is because magnetic-adsorption presses
In concrete surface.
When magnetic means 21 is strong magnet, magnetic force mounting device 7 is suspended on embedded bar 3 by lifting rope 8, and tight
It is pressed in concrete surface.
Technical staff on ground pulls the lifting rope 8 extended downwardly, pulls magnetic force mounting device 7, magnetic force installation dress downwards
It sets 7 to move in maintenance structure 1, so that maintenance structure 1 is by tightly compacting from top to down in concrete surface.Similarly, by it
The maintenance structure that his left and right is arranged side by side is mounted on concrete surface also by this mode, realizes covering completely for concrete surface
Lid.
It is described by remote closing remote circuit when completing concrete heat-insulating moisture-keeping maintaining blanket with concrete after fitting
Magnetic means loses ferromagnetism, packs up, spare.
Embodiment 6
It, can be the following steps are included: step 1 before step 1) on the basis of embodiment 5: obtaining concrete table
Layer temperature, concrete central temperature and environment temperature；Step 2: it after concrete central temperature, which reaches warm peak, is no less than 10h, tears open
Except concrete blinding.The two steps are to guarantee coagulation to accurately obtain concrete blinding and conserve the fitting opportunity of structure 1
The maintenance effect of soil.
It is removed in 2 hours in concrete blinding, and ensures that the central temperature of concrete and the difference of skin temperature are not more than 25
In the case where DEG C, concrete heat-insulating moisture-keeping maintaining blanket is bonded with concrete surface.So that it is guaranteed that concrete curing is in best
Opportunity.
And in step 3), when the difference of the central temperature of concrete and environment temperature is less than 1.5 DEG C, i.e., dismountable maintenance knot
Structure 1, concrete curing terminates.
The following contents be magnetic force mounting device 7 of the present invention, and using its to big height facade structures concrete into
The method of row maintenance.
Embodiment 7
Certain bridge main tower concrete structure, design height about 330m, construction height are 224~230m, and primary concreting is high
Degree is 6m, this section of king-tower structure perimeter is about 58m, and concrete molding temperature is about 11 DEG C, and environment mean temperature is 8 DEG C, wind speed
Rank is 6~storm, and the temperature at the structure centre temperature and surface layer 5cm to concrete carries out real-time monitoring, using this hair
Bright technology carries out heat and moisture preserving maintenance, specific steps to structural concrete are as follows:
(1) when concrete central temperature reaches Wen Fenghou for 24 hours, dismantling concrete template；
(2) curing fluid will be contained in sprinkler, the moisturizing layer of the maintenance structure 1 is sprayed water using sprinkler and is moistened
It is wet；In the present embodiment, the suspended structure 2 is suspension hook or iron wire, is cooperated with the hanging hole on maintenance 1 top of structure, suspension
2 one end of structure is fixed on concrete and is tied on the embedded bar 3 of layer, and the other end rests protection structure and hangs on concrete structure table
Face.
(3) lifting rope 8 and the wire rope handling lifting hole(eyelet) 22 of magnetic force mounting device 7 are cooperated, enables magnetic force mounting device 7 from concrete
Superstructure is sling toward decentralization, while can be pulled by lifting rope 8 below concrete structure, and magnetic means is moved down；
(4) magnetic force mounting device 7 is pressed on maintenance body structure surface, magnetic means 21 is electromagnet, is beaten by remote control
Remote circuit is opened, so that the bar construction in electromagnet generation ferromagnetism, with concrete is formed strong magnetic force and cooperates, under concrete structure
Square staff makes maintenance structure 1 closely be pressed on concrete surface, and make from top to bottom described seamless by pulling lifting rope 8
Sticker and concrete surface form secure fit, and left and right gradually makes maintenance structure fit in concrete surface completely；In coagulation
When native form removable 1h, completes maintenance structure and be bonded with the complete of structural concrete；
(4) after completing being bonded of maintenance structure 1 and concrete, by remote closing remote circuit, the electromagnet is lost
Ferromagnetism packs up magnetic force mounting device, spare；
(5) when the difference of the central temperature of concrete and environment temperature is 1.5 DEG C, maintenance structure is removed, and by seamless glue
The dust sticked is cleaned out, and is packed up, spare.
Engineering construction effect
After concrete blinding removes out, establishment officer rests protection structure and fits in structural concrete surface immediately.Such as Fig. 5 institute
Show, after concrete blinding is removed, sudden drop phenomenon occurs in concrete surface layer temperature, but after conserving structure covering, skin temperature is fast
Speed is gone up, and is gradually intended to balance with central temperature, and the inner table temperature difference is gradually reduced, and realizes good heat insulation effect.Using
The concrete impedance hygrometer of Tramex company, Switzerland production, carries out humidity measurement to concrete surface daily, the results showed that, it mixes
For solidifying soil during maintenance, surface relative humidity is not less than 96%, and moistening effect is good.
Comparative example 1
The object or the bridge main tower structural concrete in embodiment 2 of comparative example, design height about 330m, construction height
For 212~218m, primary concreting height is 6m, this section of king-tower structure perimeter is about 60m, and concrete molding temperature is about 12
DEG C, environment mean temperature is 9.5 DEG C, and wind speed rank is 6~storm, at the structure centre temperature and surface layer 5cm to concrete
Temperature carry out real-time monitoring, structural concrete 5 days dismantling concrete templates after pouring can not take due to big wind effect
Maintenance measure.
Test result shows that the temperature drop prompt drop of concrete is noticeably greater than the temperature drop rate of concrete in embodiment 2, and when mixed
After solidifying soil form removable, concrete surface layer rapid drop in temperature, and in the table temperature difference it is increasing, cause concrete degree occur
Different thermal cracking, and due to the sunshine of environment strong wind, concrete surface relative humidity, from the 90% of demoulding, 6
It has been rapidly decreased to 55% in hour, has led to the appearance of a large amount of desciccation cracks.
Claims (16)
1. a kind of magnetic force mounting device (7), which is characterized in that including magnetic means (21) and mobile device, mobile device and magnetic
Power device (21) connection, the mobile device drive magnetic means (21) mobile.
2. magnetic force mounting device (7) according to claim 1, which is characterized in that the magnetic force mounting device (7) further includes
Shell (23), support rod (24), the magnetic means (21), support rod (24) setting are in shell (23), the magnetic means
(21) it is arranged at the both ends of support rod (24).
3. magnetic force mounting device (7) according to claim 1, which is characterized in that the magnetic means (21) is electromagnet
Or strong magnet.
4. magnetic force mounting device (7) according to claim 3, which is characterized in that when magnetic means (21) are electromagnet,
It further include power supply (25).
5. magnetic force mounting device (7) according to claim 4, which is characterized in that the power supply (25) is remote circuit.
6. magnetic force mounting device (7) according to claim 1, which is characterized in that the mobile device includes wire rope handling lifting hole(eyelet)
(22) it is arranged with lifting rope (8), the wire rope handling lifting hole(eyelet) (22) in the outside of shell (23), the lifting rope (8) passes through wire rope handling lifting hole(eyelet)
(22) it and is fixed, the lifting rope (8) passes through wire rope handling lifting hole(eyelet) (22) and extends downwardly.
7. a kind of maintenance process of big height facade structures concrete, which is characterized in that by any described in claim 1-6
Magnetic force mounting device (7) rest the fixed surface for fitting in big height facade structures concrete of protection structure；The maintenance structure
Including insulating layer, moisturizing layer and self-adhesion structure.
8. the maintenance process of concrete according to claim 7, which is characterized in that include the following steps,
1) the moisturizing layer for moistening the maintenance structure, rests protection structure and is covered on concrete structural surface；
2) protection structure is rested using the magnetic force mounting device (7) any in claim 1-6 be pressed on concrete structure table
Face；
3) keep compaction mobile magnetic force mounting device (7) in maintenance body structure surface；
4) after maintenance structure is installed, magnetic force mounting device (7) are removed.
9. the method for concrete curing according to claim 8, which is characterized in that the step 1) is to be tied by suspension
Structure (2) is rested protection structure and is hung on concrete structure embedded bar outstanding (3), and maintenance structure is unfolded to be covered on because of self weight
Concrete structural surface.
10. the method for concrete curing according to claim 9, which is characterized in that the suspended structure (2) includes maintenance
The hanging hole and hanger, the hanger of structure (1) top setting are connect with hanging hole.
11. the method for concrete curing according to claim 8, which is characterized in that the step 2) is,
When magnetic means (21) are electromagnet, magnetic force mounting device (7) are suspended on embedded bar (3) by lifting rope (8)；
It opens power supply (25), the magnetic force mounting device (7) is because magnetic-adsorption is pressed in concrete surface.
12. the method for concrete curing according to claim 8, which is characterized in that the step 2) are as follows:
When magnetic means (21) are strong magnet, magnetic force mounting device (7) are suspended on embedded bar (3) by lifting rope (8).
13. the method for concrete curing according to claim 8, which is characterized in that the step 3) is to be hung by pulling
It restricts (8), keeps magnetic force mounting device (7) mobile.
14. the method for concrete curing according to claim 8, which is characterized in that before step 1), can also include
Following steps:
Step 1: concrete surface layer temperature, concrete central temperature and environment temperature are obtained；
Step 2: reach Wen Fenghou in concrete central temperature and be no less than 10h, dismantling concrete template.
15. the method for concrete curing according to claim 14, which is characterized in that the step 3) is to work as concrete
Central temperature and environment temperature difference less than 1.5 DEG C when, remove maintenance structure (1).
16. the method for concrete curing according to claim 14, which is characterized in that at dismantling concrete template 2 hours
It is interior, and the difference of the central temperature of concrete and skin temperature is bonded the maintenance structure (1) no more than in the case where 25 DEG C.
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