CN211645918U - Box girder curing means - Google Patents
Box girder curing means Download PDFInfo
- Publication number
- CN211645918U CN211645918U CN201922219628.1U CN201922219628U CN211645918U CN 211645918 U CN211645918 U CN 211645918U CN 201922219628 U CN201922219628 U CN 201922219628U CN 211645918 U CN211645918 U CN 211645918U
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- China
- Prior art keywords
- heated board
- roof beam
- case roof
- box girder
- heat preservation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004321 preservation Methods 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000012423 maintenance Methods 0.000 claims abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000009413 insulation Methods 0.000 claims description 16
- 238000010276 construction Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 7
- 239000004567 concrete Substances 0.000 abstract description 7
- 230000003028 elevating effect Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The utility model relates to a concrete winter construction maintenance and heat preservation technical field specifically discloses a case roof beam curing means, including the vertical lateral part heated board of locating the case roof beam left and right sides, both sides are equipped with the tip heated board around the case roof beam, the tip heated board is including locating the web heated board of case roof beam edge of a wing lower part and locating the basic heated board between the system roof beam pedestal, web heated board and basic heated board combination assemble back and case roof beam cross sectional shape assorted tip heated board, articulated formation heat preservation room between tip heated board and the lateral part heated board, both ends are equipped with automatic lifting mechanism around the heat preservation room, automatic lifting mechanism seals the heat preservation to two tip around the case roof beam, inserts in the bottom of case roof beam and evaporates the mechanism of curing. Can realize heat preservation cloth automatic rising through elevating system, effectively carry out closed heat preservation maintenance to the case roof beam, have advantages such as simple structure, make things convenient for the later stage dismouting to accomodate, can effectual improvement work efficiency, convenient to popularize and use.
Description
Technical Field
The utility model relates to a concrete winter construction maintenance and heat preservation technical field specifically discloses a case roof beam curing means.
Background
The box girder is one of the middle girders in bridge engineering, the inner part of the box girder is hollow, and flanges are arranged on two sides of the upper part of the box girder and are similar to a box, so that the box girder is named. Single boxes, multiple boxes, etc. The box girder of the reinforced concrete structure is divided into a prefabricated box girder and a cast-in-place box girder. Cast-in-place box girders are mostly used for large continuous bridges.
With the development of railway construction engineering, the structural design of the large box girder tends to be mature, and the large box girder is produced in a large scale and centralized manner and is widely applied to railway bridges in China. In order to ensure that the strength of the concrete of the box girder constructed in the winter period reaches the designed strength value and avoid the shrinkage cracks on the surface of the girder body caused by the temperature difference between the environment and the box girder being more than 15 ℃, heat preservation measures are required to be carried out on the box girder in the steam curing process. However, up to now, the box girder construction in winter needs to adopt heat preservation measures, and the prior art adopts the manual work to cover the box girder with the heat preservation film to finish heat preservation, and the method not only increases the labor intensity, but also has slower power and can not meet the preset heat preservation requirement.
Notice No. CN 208815421U's utility model provides a cast-in-place case roof beam heat preservation system, including the body frame body, the setting element, keep warm outer quilt and supplementary fastener, the body frame body is including outer support body and inlayer support body, be connected through the connecting piece between outer support body and the inlayer support body, the top at inlayer support body is installed to the setting element, keep warm outer quilt is including cotton quilt main part and mounting, the mounting is installed on the length direction's of cotton quilt main part a side, the mounting is connected with two adjacent setting elements, every cotton quilt main part is laid in one and is laid the passageway, adjacent cotton quilt main part overlaps, the cotton quilt main part has been laid respectively at the length direction's of the body frame body both ends, the body frame body passes through supplementary fastener fixed connection with. This cast-in-place box girder heat preservation system can keep warm to cast-in-place box girder and handle, and cast-in-place box girder is difficult in the maintenance process because ambient temperature crosses lowly and appear the infirm problem that the concrete condenses, has guaranteed cast-in-place box girder's construction quality when the construction in winter equally.
Above-mentioned technical scheme structure is complicated, and the dismouting step is comparatively loaded down with trivial details, is unfavorable for promoting.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide a case roof beam curing means.
In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a case roof beam curing means, includes the vertical lateral part heated board of locating the case roof beam left and right sides, both sides are equipped with the tip heated board around the case roof beam, the tip heated board is including locating the web heated board of case beam flange lower part and locating the basic heated board between the system beam pedestal, web heated board and basic heated board combination assemble back and case roof beam cross sectional shape assorted tip heated board, articulated formation heat preservation room between tip heated board and the lateral part heated board, both ends are equipped with automatic lifting mechanism around the heat preservation room, automatic lifting mechanism seals two tip in the front and back of case roof beam and keeps warm, inserts in the bottom of case roof beam and evaporates foster mechanism.
Preferably, the top of the end heat-insulation plate and the top of the side heat-insulation plate are hung with heat-insulation sheds for top heat insulation.
Preferably, all be equipped with vertical arrangement's guiding axle on the side on the lateral part heated board of case roof beam, automatic lifting mechanism passes through the guiding axle and is connected with the lateral part heated board.
Preferably, the automatic lifting mechanism comprises heat-insulating cloth, a row of sliding rings are uniformly distributed on the left side and the right side of the heat-insulating cloth respectively, the two sides of the heat-insulating cloth are connected with the guide shaft in a sliding mode through the sliding rings, and the end portion of the heat-insulating cloth is connected with the lifting mechanism.
Preferably, a steel wire rope is arranged at the end parts of the two guide shafts and fixedly connected with the guide shafts through positioning pins.
Preferably, the top of the guide shaft is provided with an inward bending section, and the length of the inward bending section is 80cm-100 cm.
Preferably, the sliding shaft has a diameter of 30 to 50 mm.
Preferably, the heat-insulating cloth is waterproof heat-insulating cloth.
The utility model has the advantages that: the heat-insulating cloth of the utility model can realize automatic lifting through the lifting mechanism, can accelerate the working efficiency, is convenient to disassemble and assemble, and has the advantages of convenient construction and manpower reduction; the heat-insulating plates are assembled in a combined mode, different heat-insulating plates can be selected according to the sizes of different box girders for combined installation, and more working conditions are met; the utility model discloses effectively carry out closed heat preservation maintenance to the case roof beam, have advantages such as simple structure, make things convenient for the later stage dismouting to accomodate, can effectual improvement work efficiency, convenient to popularize and use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a usage state diagram of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1 and 2, a case roof beam curing means, including the vertical lateral part heated board 1 of locating the case roof beam left and right sides, the bottom and the ground of lateral part heated board 1 are connected fixedly, and both sides are equipped with tip heated board 2 around the case roof beam, tip heated board 2 is including locating the web heated board 21 of case roof beam edge of a wing lower part and locating the basic heated board 22 between the system roof beam pedestal, web heated board 21 and basic heated board 22 make up assemble back and case roof beam cross sectional shape assorted tip heated board 2, the articulated insulating chamber that forms between lateral part heated board 1 and tip heated board 2, both ends are equipped with automatic lifting mechanism around the insulating chamber, automatic lifting mechanism seals two tip in the front and back of case roof beam and keeps warm, inserts the mechanism of evaporating to support in the bottom of case roof beam.
Furthermore, a heat insulation shed is hung on the top of the end heat insulation plate 2 and the top of the side heat insulation plate 1 for top heat insulation.
Further, all be equipped with vertical arrangement's guiding axle 11 on the side of the lateral part heated board 1 of case roof beam, automatic lifting mechanism passes through guiding axle 11 and is connected with lateral part heated board 1.
Further, the automatic lifting mechanism comprises heat-insulating cloth 31, a row of sliding rings 32 are respectively and evenly distributed on the left side and the right side of the heat-insulating cloth 31, the two sides of the heat-insulating cloth 31 are in sliding connection with the guide shaft 11 through the sliding rings 32, the end part of the heat-insulating cloth 31 is connected with a lifting mechanism 33, and the lifting mechanism 33 adopts a 500kg crane to lift and spread the heat-insulating cloth 31.
Further, in order to increase the distance between the heat insulation cloth 31 and the steel strand of the box girder, the width of the side heat insulation board 1 is 20cm-40cm longer than the actual leakage length of the steel strand, so that the situation that the steel strand of the box girder scratches the waterproof heat insulation cloth to increase maintenance cost and affect the heat insulation effect is prevented.
Furthermore, a steel wire rope 12 is arranged at the end parts of the two guide shafts 11, the steel wire rope 12 is fixedly connected with the guide shafts 11 through a positioning pin 13, and the heat-insulating cloth 31 is lifted upwards and then turned over from the steel wire rope 12, so that the heat-insulating cloth 31 is prevented from being scratched after dropping and contacting with a steel strand.
Further, in order to achieve a fully-closed heat preservation effect, the top of the guide shaft 11 is provided with an inward bending section, so that the top of the heat preservation cloth 31 is covered inwards to form a section after rising, the heat preservation cloth is effectively lapped with the top surface of the box girder, and the length of the inward bending section is 80cm-100 cm.
Further, in order to ensure the lifting stability of the heat-insulating cloth 31, the diameter of the sliding shaft 11 is 30-50 mm.
Furthermore, the heat-insulating cloth 31 is made of waterproof heat-insulating cloth, so that water vapor can be prevented from volatilizing in the heat-insulating process, and the influence of rainwater on the maintenance of the box girder can be prevented in severe weather.
After box girder prefabrication is completed, the curing device is spliced and installed according to the size of the box girder, and after the installation is completed, a steam curing mechanism is connected to the bottom of the box girder to cure the box girder. And a steam pipeline of the steam curing mechanism extends into the space between the bases of the box girder to perform constant-temperature curing on the box girder, the constant temperature is a main increasing stage of the concrete strength, the temperature in the curing device is controlled to be about 40 ℃, and after the steam curing time is reached, steam supply can be stopped, and the curing device is detached.
When the maintenance device is dismantled, the maintenance device cannot be immediately opened so as to avoid shrinkage cracks on the surface of the concrete caused by overlarge temperature difference between the inside and the outside of the concrete, particularly under the condition of strong wind or low outside temperature. At first open the heat preservation cloth 31 at curing means's both ends through elevating system 33, carry out the outdoor inside ventilation of case roof beam, among the ventilation process, the staff can open and get into the heat preservation indoor with lateral part heated board 1 articulated tip heated board 2 and look over the case roof beam maintenance condition, through the ventilation, slowly natural falls to the difference of ambient temperature with roof beam body surface temperature and can demolish curing means when not being greater than 15 ℃.
The utility model discloses a cloth 31 that keeps warm can realize automatic rising through elevating system 33, can accelerate work efficiency to make things convenient for the dismouting, it is convenient to have the construction, reduces the advantage of manpower. The heat-insulating plates are assembled in a combined mode, different heat-insulating plates can be selected according to the sizes of different box girders to be assembled, and more working conditions are met. The utility model discloses effectively carry out closed heat preservation maintenance to the case roof beam, have advantages such as simple structure, make things convenient for the later stage dismouting to accomodate, can effectual improvement work efficiency, convenient to popularize and use.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.
Where the words "first", "second", etc. are used in this patent to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words above have no special meaning.
Claims (8)
1. The utility model provides a case roof beam curing means, its characterized in that, includes the vertical lateral part heated board of locating the case roof beam left and right sides, both sides are equipped with the tip heated board around the case roof beam, the tip heated board is including locating the web heated board of case roof beam edge of a wing lower part and locating the basic heated board between the system roof beam pedestal, web heated board and basic heated board combination assemble back and case roof beam cross-sectional shape assorted tip heated board, articulated formation heat preservation room between tip heated board and the lateral part heated board, both ends are equipped with automatic lifting mechanism around the heat preservation room, automatic lifting mechanism seals the heat preservation to two tip around the case roof beam, inserts in the bottom of case roof beam and evaporates foster the mechanism.
2. A box girder curing apparatus according to claim 1, wherein a thermal insulation shed is hung on top of the end thermal insulation boards and the side thermal insulation boards for top thermal insulation.
3. A box girder curing device according to claim 1, wherein vertically arranged guide shafts are provided on the side edges of the side heat-insulating plates of the box girder, and the automatic lifting mechanism is connected with the side heat-insulating plates through the guide shafts.
4. The box girder curing device of claim 3, wherein the automatic lifting mechanism comprises a row of slip rings distributed on the left and right sides of the thermal cloth, the two sides of the thermal cloth are connected with the guide shaft in a sliding manner through the slip rings, and the end of the thermal cloth is connected with the lifting mechanism.
5. A box girder curing device according to claim 4, wherein a wire rope is provided at the end of the two guide shafts, and the wire rope is fixedly connected to the guide shafts by means of positioning pins.
6. A box girder curing device according to claim 5, wherein the guide shaft is provided at the top thereof with an inwardly bent section having a length of 80cm to 100 cm.
7. A box beam maintenance device according to claim 6, characterized in that the diameter of the guiding axle is 30-50 mm.
8. A box girder curing device according to claim 4, wherein the heat-insulating cloth is waterproof heat-insulating cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922219628.1U CN211645918U (en) | 2019-12-12 | 2019-12-12 | Box girder curing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922219628.1U CN211645918U (en) | 2019-12-12 | 2019-12-12 | Box girder curing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211645918U true CN211645918U (en) | 2020-10-09 |
Family
ID=72695704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922219628.1U Expired - Fee Related CN211645918U (en) | 2019-12-12 | 2019-12-12 | Box girder curing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211645918U (en) |
-
2019
- 2019-12-12 CN CN201922219628.1U patent/CN211645918U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |