CN114717959A - Heat storage and heat preservation maintenance device for bridge wet joint concrete - Google Patents
Heat storage and heat preservation maintenance device for bridge wet joint concrete Download PDFInfo
- Publication number
- CN114717959A CN114717959A CN202210390763.6A CN202210390763A CN114717959A CN 114717959 A CN114717959 A CN 114717959A CN 202210390763 A CN202210390763 A CN 202210390763A CN 114717959 A CN114717959 A CN 114717959A
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- China
- Prior art keywords
- heat
- concrete
- preservation
- wet
- heat preservation
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Links
- 238000004321 preservation Methods 0.000 title claims abstract description 33
- 238000012423 maintenance Methods 0.000 title claims abstract description 17
- 238000005338 heat storage Methods 0.000 title claims abstract description 13
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 17
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 17
- 241001330002 Bambuseae Species 0.000 claims abstract description 17
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 17
- 239000011425 bamboo Substances 0.000 claims abstract description 17
- 239000011120 plywood Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 6
- -1 polyethylene Polymers 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims 2
- 230000036571 hydration Effects 0.000 abstract description 5
- 238000006703 hydration reaction Methods 0.000 abstract description 5
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a heat storage and preservation maintenance device for wet joint concrete of a bridge, which is used for providing heat storage and preservation measures for the pouring and maintenance process of the wet joint of a prefabricated T beam or a box beam, providing a heat source for concrete which is just put into a mould by utilizing a heat tracing band fixed on the surface of a template, realizing heat preservation and heat insulation of the wet joint concrete by utilizing a composite template made by sandwiching an extruded sheet in a double-layer bamboo plywood, avoiding the early freezing of the concrete and ensuring the normal hydration of the cement concrete; the invention ensures the stability of temperature and humidity in the concrete curing process to the utmost extent, improves the engineering quality, and has simple operation, repeated use and low cost.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a heat storage and preservation maintenance device for bridge wet joint concrete.
Background
The prefabricated assembly is a common construction process for small and medium-span bridges, roof plates of the bridges need to be connected in the width direction, and prefabricated T-shaped beams or box beams are connected through wet joints. The thickness of the wet joint is about 20cm, the width of the wet joint is 40-100 cm, the wet joint is as long as the beam, and the concrete is cast-in-place construction. During winter construction, if the concrete does not have a high enough mold-entering temperature or the template is not subjected to proper heat-insulating treatment, early freezing of the concrete is easy to occur. Once the concrete is frozen early, the structure of its hydration products is severely damaged and irrecoverable, and this problem is to be avoided. Aiming at the characteristics of small thickness, large surface area, low hydration heat release of concrete, quick heat dissipation and the like of wet joints, the heat storage and insulation curing device for the bridge wet joints needs to be developed to avoid early freezing of the concrete.
Disclosure of Invention
In order to solve the technical problems, the invention provides a heat storage and heat preservation maintenance device for bridge wet joint concrete, which aims to solve the problems that concrete is frozen early and the engineering quality is reduced during the existing pouring and maintenance of the bridge wet joint.
The utility model provides a wet seam of bridge is heat accumulation heat preservation curing means for concrete, wet seam arrangement provides heat accumulation heat preservation in between two prefabricated T roof beams or roof beam case, heat accumulation heat preservation curing means is used for the wet seam pouring maintenance process of prefabricated T roof beam or roof beam case, comprises last heat preservation and lower heat preservation, and waterproof cloth, cotton quilt and polyethylene film arrange in proper order top-down on the upper surface of wet seam constitutes the heat preservation, and first bamboo plywood, extruded sheet and second bamboo plywood top-down arrange in proper order constitute heat preservation under the lower surface of wet seam, polyethylene film and first bamboo plywood are close to concrete surface one side equipartition and are equipped with the heat tracing area that the interval is no longer than 30cm, and the heat tracing area surface is fixed and keep apart the bonding with the concrete through the transparent adhesive, starts the power of heat tracing area before the concrete placement.
Further, the width of the transparent adhesive tape is not less than 3 times of the width of the heat tracing tape.
Furthermore, the bottom of the second bamboo plywood is reinforced by square timber, and a tie rod or an expansion bolt penetrates through the square timber to fix the lower part of the second bamboo plywood for heat preservation.
Further, the width of the upper insulating layer and the lower insulating layer is larger than that of the wet joint, and the length of the upper insulating layer and the length of the insulating layer are equal to that of the wet joint.
Has the advantages that: the prefabricated T-shaped beam or box girder is connected through the wet joint, the wet joint concrete is in cast-in-place construction, if the concrete has not enough high mold-entering temperature or the template is not subjected to proper heat preservation treatment, the concrete is easily frozen in early stage, the structure of the hydration product is seriously damaged and can not be recovered, and the engineering quality is seriously influenced; the composite template made of the double-layer bamboo plywood with the extruded sheet clamped therein realizes heat preservation and heat insulation of wet joint concrete, avoids early freezing of the concrete, ensures normal hydration of cement concrete, ensures the stability of temperature and humidity in the concrete curing process to the maximum extent, and improves the engineering quality.
The heat storage and preservation maintenance device has the advantages of simple operation of workers, convenient assembly and disassembly, low cost of the device and the like; the materials used in the method can be recycled, and the method is free of regenerated garbage and environment-friendly.
Drawings
FIG. 1 is an overall view of the heat-accumulating and heat-preserving curing apparatus according to the present invention;
FIG. 2 is a perspective view of the thermal storage and maintenance device of the present invention;
FIG. 3 is an overall perspective view of the heat-accumulating and heat-preserving curing apparatus of the present invention;
FIG. 4 is an overall front view of the thermal storage and maintenance device of the present invention;
fig. 5 is an isometric view of the thermal storage and insulation form of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
The utility model provides a wet seam concrete of bridge is with heat accumulation heat preservation curing means, pours the maintenance process and provides the heat accumulation heat preservation measure for the wet seam of prefabricated T roof beam 1 including being used for, and heat accumulation heat preservation device 2 includes: the waterproof cloth 201, the quilt 202, the polyethylene film 203, the first bamboo plywood 204, the extruded sheet 205, the second bamboo plywood 206, the counter-pull rod 207, the square timber 208 and the heat tracing band 209; the bridge wet joint 3 is arranged between the two prefabricated T-shaped beams 1, and the heat storage and preservation maintenance method provides a heat storage and preservation function for the bridge wet joint; the upper heat-insulating layer consisting of the waterproof cloth 201, the quilt 202 and the polyethylene film 203 is arranged on the upper surface of the wet joint 3 for heat insulation; a lower heat insulation layer consisting of a first bamboo plywood 204, an extruded sheet 205 and a second bamboo plywood 206 is arranged on the lower surface of the wet joint 3 for heat insulation; the upper heat-insulating layer and the lower heat-insulating layer of the wet joint are provided with heat tracing bands 209 at intervals of no more than 30cm on the sides close to the concrete surface, the surfaces of the heat tracing bands 209 are fixed by transparent adhesive and are isolated from the concrete adhesion, and the power supply of the heat tracing bands 209 is started before the concrete is poured; the back of the first bamboo plywood 204 at the bottom of the wet joint concrete is reinforced by square timbers 208, and a pull rod 207 or an expansion bolt penetrates through the square timbers 208 to realize fixation, so that the template is firm during the concrete pouring process;
the heat tracing band 209 is adhered to the first bamboo plywood 204 by using a transparent adhesive tape, and the width of the transparent adhesive tape is not less than 3 times of the width of the heat tracing band, so that the effective fixation of the heat tracing band 209 and the formwork and the effective isolation of the heat tracing band 209 and the concrete are ensured.
The width of the upper heat-insulating layer and the width of the lower heat-insulating layer are larger than the width of the wet joint, and the length of the upper heat-insulating layer and the length of the heat-insulating layer are equal to the length of the wet joint.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make modifications, alterations, additions or substitutions within the spirit and scope of the present invention.
Claims (4)
1. The utility model provides a wet seam of bridge is heat accumulation heat preservation curing means for concrete, its characterized in that, wet seam arrangement provides heat accumulation heat preservation between two prefabricated T roof beams or roof beam case, heat accumulation heat preservation curing means is used for the wet seam pouring maintenance process of prefabricated T roof beam or roof beam case, comprises last heat preservation and lower heat preservation, and waterproof cloth, cotton-wadded quilt and polyethylene film in proper order top-down arrange constitute last heat preservation in the upper surface of wet seam, and first bamboo plywood, extruded sheet and second bamboo plywood top-down arrange in proper order under the lower surface of wet seam constitutes the heat preservation, polyethylene film and first bamboo plywood are close to concrete surface one side equipartition and are equipped with the heat tracing area that the interval is no longer than 30cm, and the heat tracing area surface is fixed and keeps apart the bonding with the concrete through the transparent adhesive, and the power of start-up heat tracing area before the concrete pouring.
2. The heat storage and preservation maintenance device for the wet bridge joint concrete according to claim 1, characterized in that: the width of the transparent adhesive tape is not less than 3 times of the width of the heat tracing tape.
3. The heat storage and preservation maintenance device for the wet bridge joint concrete according to claim 1, characterized in that: the bottom of the second bamboo plywood is reinforced by square wood, and a tie rod or an expansion bolt penetrates through the square wood to fix the lower heat insulation part.
4. The heat storage and preservation maintenance device for the wet bridge joint concrete according to claim 1, characterized in that: the width of the upper heat-insulating layer and the width of the lower heat-insulating layer are larger than the width of the wet joint, and the length of the upper heat-insulating layer and the length of the heat-insulating layer are equal to the length of the wet joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390763.6A CN114717959A (en) | 2022-04-14 | 2022-04-14 | Heat storage and heat preservation maintenance device for bridge wet joint concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390763.6A CN114717959A (en) | 2022-04-14 | 2022-04-14 | Heat storage and heat preservation maintenance device for bridge wet joint concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114717959A true CN114717959A (en) | 2022-07-08 |
Family
ID=82244467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210390763.6A Pending CN114717959A (en) | 2022-04-14 | 2022-04-14 | Heat storage and heat preservation maintenance device for bridge wet joint concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114717959A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116591042A (en) * | 2023-03-13 | 2023-08-15 | 中交一公局第二工程有限公司 | UHPC bridge deck wet joint winter construction maintenance device and maintenance method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129095A (en) * | 1992-09-25 | 1994-05-10 | Toda Constr Co Ltd | Mat for curing concrete |
| JP2004027572A (en) * | 2002-06-24 | 2004-01-29 | Taisei Corp | Curing device for cement mixing material and its use |
| CN203097276U (en) * | 2013-02-26 | 2013-07-31 | 中国十七冶集团有限公司 | Electric-heating heat preservation formwork |
| CN104652835A (en) * | 2015-01-29 | 2015-05-27 | 中交第二航务工程局有限公司 | Electric-tracing heat preservation method for winter construction of wet joint of composite beam |
| CN105525569A (en) * | 2014-10-22 | 2016-04-27 | 五冶集团上海有限公司 | Bridge flange plate wet joint suspended formwork construction method |
| CN107881894A (en) * | 2017-10-19 | 2018-04-06 | 清华大学 | Severe cold area concrete extension joint construction and maintenance method |
| CN208618271U (en) * | 2018-06-14 | 2019-03-19 | 中铁三局集团有限公司 | It is a kind of to heat template for the wet seam maintenance of beam sections |
| CN209144034U (en) * | 2018-11-23 | 2019-07-23 | 中交第三航务工程局有限公司 | A kind of concrete Maintenance in Winter device |
| CN110983974A (en) * | 2019-11-21 | 2020-04-10 | 中交第二航务工程局有限公司 | Comprehensive maintenance method for concrete box girder construction in winter |
| CN111851310A (en) * | 2020-08-14 | 2020-10-30 | 中铁二局集团有限公司 | Heating and heat-insulating system, heat-insulating method and construction method for winter construction pouring template |
| CN113265946A (en) * | 2021-04-17 | 2021-08-17 | 北京市市政二建设工程有限责任公司 | Self-heating template capable of being rapidly installed at wet joint of bridge |
-
2022
- 2022-04-14 CN CN202210390763.6A patent/CN114717959A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06129095A (en) * | 1992-09-25 | 1994-05-10 | Toda Constr Co Ltd | Mat for curing concrete |
| JP2004027572A (en) * | 2002-06-24 | 2004-01-29 | Taisei Corp | Curing device for cement mixing material and its use |
| CN203097276U (en) * | 2013-02-26 | 2013-07-31 | 中国十七冶集团有限公司 | Electric-heating heat preservation formwork |
| CN105525569A (en) * | 2014-10-22 | 2016-04-27 | 五冶集团上海有限公司 | Bridge flange plate wet joint suspended formwork construction method |
| CN104652835A (en) * | 2015-01-29 | 2015-05-27 | 中交第二航务工程局有限公司 | Electric-tracing heat preservation method for winter construction of wet joint of composite beam |
| CN107881894A (en) * | 2017-10-19 | 2018-04-06 | 清华大学 | Severe cold area concrete extension joint construction and maintenance method |
| CN208618271U (en) * | 2018-06-14 | 2019-03-19 | 中铁三局集团有限公司 | It is a kind of to heat template for the wet seam maintenance of beam sections |
| CN209144034U (en) * | 2018-11-23 | 2019-07-23 | 中交第三航务工程局有限公司 | A kind of concrete Maintenance in Winter device |
| CN110983974A (en) * | 2019-11-21 | 2020-04-10 | 中交第二航务工程局有限公司 | Comprehensive maintenance method for concrete box girder construction in winter |
| CN111851310A (en) * | 2020-08-14 | 2020-10-30 | 中铁二局集团有限公司 | Heating and heat-insulating system, heat-insulating method and construction method for winter construction pouring template |
| CN113265946A (en) * | 2021-04-17 | 2021-08-17 | 北京市市政二建设工程有限责任公司 | Self-heating template capable of being rapidly installed at wet joint of bridge |
Non-Patent Citations (1)
| Title |
|---|
| 魏强等: "《铁路工程冬期施工技术管理手册》", 31 July 2021, 中国铁道出版社有限公司, pages: 102 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116591042A (en) * | 2023-03-13 | 2023-08-15 | 中交一公局第二工程有限公司 | UHPC bridge deck wet joint winter construction maintenance device and maintenance method |
| CN116591042B (en) * | 2023-03-13 | 2024-05-28 | 中交一公局第二工程有限公司 | UHPC bridge deck wet joint winter construction maintenance device and maintenance method |
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