CN105625189B - Hollow high pier concrete placement heat preservation maintenance system - Google Patents
Hollow high pier concrete placement heat preservation maintenance system Download PDFInfo
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- CN105625189B CN105625189B CN201610046132.7A CN201610046132A CN105625189B CN 105625189 B CN105625189 B CN 105625189B CN 201610046132 A CN201610046132 A CN 201610046132A CN 105625189 B CN105625189 B CN 105625189B
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to the technical field of building bridges, in particular to a hollow high pier concrete pouring heat preservation maintenance system which can be applied to bridge construction design in severe cold areas. The system comprises a pier bottom bearing platform; the pier bottom bearing platform is provided with a poured concrete hollow section, and the heat preservation shed is arranged on the shed frame upright stanchion; the heat-insulation curtain is laid between the concrete to-be-poured area and the last section of the poured concrete hollow section and is positioned on the outer side of the template scaffold; the temperature control humidification warm air furnace is arranged at the hollow part of the bottom of the pier and is connected with a water vapor pipeline, a hot air pipeline and a chimney pipeline. The system solves the technical problems that when the outdoor temperature reaches below 5 ℃, the hollow high-pier concrete pouring environment temperature cannot meet the requirement and the high-pier body concrete cannot be constructed in the prior art.
Description
Technical Field
The invention relates to the technical field of building bridges, in particular to a hollow high pier concrete pouring heat preservation and maintenance system, and particularly relates to a hollow high pier concrete pouring heat preservation and maintenance system applicable to severe cold regions.
Background
In the construction of high-speed railways, most of the high-speed railways are mainly designed into bridges, and the bridges mainly comprise pier bodies and box girders. The bridge piers are divided into solid piers and hollow piers, the hollow piers are designed when the height of the bridge pier body is higher than 20 meters, and the solid piers are designed when the height of the bridge pier body is lower than 20 meters; the hollow height can be constructed when the temperature of the day and night environment reaches more than 5 ℃ in concrete pouring construction; in severe cold areas, due to too low temperature and large day and night temperature difference, the basic requirement of high pier body concrete pouring can not be met, in the existing construction method, a steel pipe net rack heat preservation shed is erected around a high pier, the upper surface and the outer surface of the heat preservation shed are covered and sealed by heat preservation cotton and geotextile, furnaces are arranged around the pier body in the shed, the periphery of the pier body is baked by the furnaces, and the humidity maintenance is carried out by drying water; according to the heat preservation method, when the outdoor temperature reaches below-5 ℃, the heat preservation construction method cannot meet the basic requirement of concrete pouring, and the high pier body concrete cannot be constructed; moreover, the heat preservation method has the quality problems of large occupied space, more material investment, poor heat preservation effect, more potential safety hazards, poor sealing effect, large heat dissipation, incapability of transferring the temperature inside the pier body, extremely easy frost damage to the concrete, reduced concrete strength and the like.
Disclosure of Invention
Technical problem to be solved
The invention provides a hollow high-pier concrete pouring heat-preservation maintenance system, and solves the technical problems that when the outdoor temperature reaches below 5 ℃, the hollow high-pier concrete pouring environment temperature cannot meet the requirement, and the high-pier body concrete cannot be constructed in the prior art.
(II) technical scheme
In order to solve the technical problem, the invention provides a hollow high pier concrete pouring heat preservation maintenance system, which comprises:
the high pier body comprises a pier bottom bearing platform; a poured concrete hollow section is arranged on the pier bottom bearing platform, a pier bottom inlet is arranged at the hollow part of the pier bottom of the poured concrete hollow section, a poured section outer side template is arranged on the outer side of the poured concrete hollow section, and a concrete region to be poured is arranged above the poured section outer side template; a template cantilever frame is arranged on a back ridge channel steel of the template at the outer side of the poured section, and a shed cloth supporting device is arranged on the template cantilever frame;
the heat-preservation building envelope comprises heat-preservation shed cloth and a heat-preservation curtain; the heat-preservation shed cloth is arranged on the shed cloth supporting device; the heat-insulation curtain is laid between the concrete to-be-poured area and the last section of the poured concrete hollow section and is positioned on the outer side of the template scaffold;
the temperature control humidifying warm air furnace is arranged at the hollow part of the pier bottom and is connected with a water vapor pipeline, a warm air pipeline and a chimney pipeline;
and the concrete conveying mechanism conveys the concrete to-be-poured area through a concrete conveying pipeline.
The inner side and the periphery of the concrete area to be poured are provided with inner templates of the area to be poured, and the outer side and the periphery of the outer side of the concrete area to be poured, corresponding to the inner templates of the area to be poured, are provided with outer templates of the area to be poured.
The cast concrete hollow section is divided into a plurality of sections, and a cast section ventilation opening is formed in each section of the cast concrete hollow section.
The temperature control humidifying warm air furnace is provided with a water inlet and a water vapor outlet respectively, one end of the water vapor pipeline is connected with the water vapor outlet through a pipeline with a hole in the lower part, and the other end of the water vapor pipeline extends upwards and is arranged at a vent of the poured section.
The temperature control humidifying warm air furnace is provided with a warm air port, a layer of flame-retardant heat preservation cotton wraps the outside of the warm air pipeline, one end of the warm air pipeline is connected with the warm air port, and the other end of the warm air pipeline penetrates through the last section of the poured section of the ventilation opening and extends upwards along the inner side of the heat preservation curtain.
The chimney pipeline extends upwards along the poured concrete hollow section and penetrates through the heat-insulation shed cloth to be communicated with the outside.
And a gap is reserved between the external template of the area to be poured and the heat-insulating curtain.
One end of the concrete conveying pipeline is located on the outer side of the bottom of the pier, the other end of the concrete conveying pipeline enters the hollow pier through the first section of the pier body and the air vent of the poured section, and the other end of the concrete conveying pipeline extends upwards to the inner side of the concrete area to be poured.
The hollow high pier concrete pouring heat preservation maintenance system further comprises an electric fan heater, wherein the electric fan heater is arranged on a formwork cantilever frame of a top concrete pouring area.
The heat-preservation shed cloth comprises a transparent plastic film, a heat-preservation cotton quilt and color strip cloth which are sequentially arranged; the heat preservation curtain comprises a heat preservation cotton quilt and color strip cloth which are arranged in sequence.
(III) advantageous effects
The technical scheme of the invention has the following beneficial effects: the hollow high-pier concrete pouring heat-preservation maintenance system can be applied to concrete construction in severe cold areas, and solves the technical problems that when the outdoor temperature reaches below 5 ℃, the hollow high-pier concrete pouring environment temperature cannot meet the requirements, and high-pier body concrete cannot be constructed in the prior art. Moreover, the hollow high pier concrete pouring heat preservation maintenance system has the advantages of small space, less material investment, good heat preservation effect, low potential safety hazard, good sealing effect, low heat dissipation, timely in-place temperature transmission inside the pier body and the like, and is beneficial to popularization and application.
Drawings
FIG. 1 is a schematic elevation structure view of a hollow high pier concrete pouring heat preservation maintenance system according to an embodiment of the invention;
wherein, 1: a pier bottom bearing platform; 2: pouring concrete hollow sections; 3: pouring a section outer side template; 4: a concrete area to be poured; 5: an inner template of the area to be poured; 6: an external template of the area to be poured; 7: a template cantilever frame; 8: erecting a shed frame; 9: heat preservation shed cloth; 10: a heat-insulating curtain; 11: a cast section vent; 12: a hollow part at the bottom of the pier; 13: a temperature control humidifying warm air furnace; 14: a water inlet; 15: a water vapor outlet; 16: a water vapor conduit; 17: a hot air port; 18: a hot air duct; 19: a void; 20: a chimney duct; 21: flame-retardant heat-preservation cotton; 23: a concrete conveying pipeline; 24: a pipeline with a hole at the lower part; 25: an electric warm-air machine.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.
As shown in fig. 1, the present embodiment provides a hollow high pier concrete pouring heat preservation and maintenance system, which includes:
the high pier comprises a high pier body, a high pier body and a high pier body, wherein the high pier body comprises a pier bottom bearing platform 1; a poured concrete hollow section 2 is arranged on the pier bottom bearing platform 1, a pier bottom inlet is arranged at a pier bottom hollow part 12 of the poured concrete hollow section 2, a poured section outer side template 3 is arranged on the outer side of the poured concrete hollow section 2, and a concrete area to be poured 4 is arranged above the poured section outer side template 3; a template cantilever frame 7 is arranged on a back ridge channel steel of the template 3 at the outer side of the poured section, and a shed cloth supporting device is arranged on the template cantilever frame 7, preferably, the shed cloth supporting device comprises a shed frame upright rod 8 and a shed frame movable frame rod, the shed frame movable frame rod is provided with a pulley, and when concrete is poured from the upper part, the pulley is driven by a hand to pull the shed to push the shed away by pouring the concrete; in addition, the concrete is treated and is pour the district and also can be equipped with the template outrigger, and electric warm braw machine sets up on the template outrigger in the district is treated and is pour to top concrete.
The top of the template cantilever frame 7 can be also provided with an electric heating fan 25 which can ensure the air humidity in the environment by heating air.
The heat-preservation building envelope comprises heat-preservation shed cloth 9 and a heat-preservation curtain 10; the heat-preservation shed cloth 9 is arranged on the shed frame upright stanchion 8 and the shed frame movable frame pole; the heat-insulating curtain 10 is laid between the concrete to-be-poured area 4 and the last section of poured concrete hollow section 2 (which can be understood as the uppermost poured concrete hollow section 2), and the heat-insulating curtain 10 is positioned outside the template scaffold 7;
the device comprises a temperature-control humidifying warm air furnace 13, wherein the temperature-control humidifying warm air furnace 13 is arranged at a hollow part 12 at the bottom of a pier, and the temperature-control humidifying warm air furnace 13 is connected with a water vapor pipeline 16, a warm air pipeline 18 and a chimney pipeline 20; the specific locations of the steam pipe 16, the hot air pipe 18 and the chimney pipe 20 are not limited, and can be flexibly set according to actual needs.
And the concrete conveying mechanism conveys the concrete to-be-poured area 4 through a concrete conveying pipeline 23.
It can be seen that the hollow high pier concrete pouring heat preservation maintenance system of this embodiment can be applied to the severe cold area that the difference in temperature is big round clock. When the outdoor temperature reaches below-5 ℃, the basic requirements of the concrete pouring can be met, and the advantages of small space, less material investment, good heat preservation effect, low potential safety hazard, good sealing effect, low heat dissipation, in-place and in-time temperature transmission inside the pier body and the like are achieved.
Specifically, an inner formwork 5 of the area to be poured is arranged on the periphery of the inner side of the area 4 to be poured, and an outer formwork 6 of the area to be poured is arranged on the periphery of the outer side of the area 4 to be poured, corresponding to the position of the inner formwork 5 of the area to be poured. Furthermore, a gap 19 is left between the external form 6 of the area to be cast and the thermal insulating curtain 10. The heat-insulation building enclosure (the heat-insulation shed cloth 9 and the heat-insulation curtain 10) is arranged at the relevant position of the concrete to-be-poured area 4, so that heat is not easy to dissipate, the heat-insulation effect is good, and the concrete is not easy to freeze.
The cast concrete hollow section 2 is divided into a plurality of sections, and a cast section vent 11 is arranged on each section of the cast concrete hollow section 2.
For the temperature-controlled humidifying warm air furnace 13: a water inlet 14 and a steam outlet 15 are respectively arranged on the temperature-controlled humidifying warm air furnace 13, one end of a steam pipeline 16 is connected with the steam outlet 15 through a pipeline 24 with a hole at the lower part, and the other end extends upwards and is arranged at the vent 11 of the poured section. As shown in fig. 1, two water vapor pipes 16 are respectively disposed on two sides of the temperature-controlled humidifying warm air furnace 13, and the two water vapor pipes 16 respectively extend upwards in close contact with the inner side of the cast concrete hollow section 2, and preferably extend to the last but one stage of the cast section vent 11. Of course, this is only a preferred way, and other arrangements are within the scope of the invention.
In addition, a hot air port 17 is arranged on the temperature control humidifying warm air furnace 13, and a layer of flame-retardant heat-preservation cotton 21 is wrapped on the hot air pipeline 18; one end of the hot air duct 18 is connected to the hot air port 17, and the other end passes through the last cast section vent 11 and extends upward along the inner side of the thermal insulation curtain 10. As shown in fig. 1, two hot air pipes 18 may be provided, each extending upward along the center of the cast concrete hollow section 2, and extending upward after passing through the vent 11 of the last cast section for providing hot air.
At the same time, the chimney pipe 20 extends upwards along the cast concrete hollow section 2, preferably along its central axis; moreover, the chimney pipe 20 passes through the heat preservation shed cloth 9 upwards to be communicated with the outside.
Moreover, the concrete conveying pipe 23 may be variously provided, specifically: one end of the concrete conveying pipeline 23 is located on the outer side of the bottom of the pier, and the other end of the concrete conveying pipeline enters the hollow pier through the first section of the pier body and the air vent of the poured section and extends upwards to the inner side of the concrete area 4 to be poured for conveying the concrete to the concrete area 4 to be poured.
Preferably, the heat-insulating shed cloth 9 comprises a transparent plastic film, a heat-insulating quilt and color strip cloth which are arranged in sequence; the heat-insulating curtain 10 comprises a heat-insulating cotton quilt and color stripe cloth which are arranged in sequence. Good heat preservation effect, convenient material taking and low manufacturing cost.
Of course, those skilled in the art can further modify and adapt the embodiments based on the above description. For example, to better monitor the temperature of the internal environment, a temperature control device may be added; or, in order to better improve the humidity of the internal environment, a humidity detection device can be added; of course, the construction equipment also comprises necessary construction equipment, such as a lighting system, the lighting system can adopt power supply, wind power generation or solar power generation and the like, other construction equipment is not repeated, and the construction equipment can be flexibly arranged according to actual conditions.
In conclusion, the hollow high-pier concrete pouring heat-preservation maintenance system can be applied to concrete construction in severe cold areas, and solves the technical problems that when the outdoor temperature reaches below 5 ℃, the hollow high-pier concrete pouring environment temperature cannot meet the requirements, and the high-pier body concrete cannot be constructed in the prior art. Moreover, the hollow high pier concrete pouring heat preservation maintenance system has the advantages of small space, less material investment, good heat preservation effect, low potential safety hazard, good sealing effect, low heat dissipation, timely in-place temperature transmission inside the pier body and the like, and is beneficial to popularization and application.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. The utility model provides a hollow high mound concrete placement heat preservation maintenance system which characterized in that includes:
the high pier body comprises a pier bottom bearing platform; a poured concrete hollow section is arranged on the pier bottom bearing platform, a pier bottom inlet is arranged at the hollow part of the pier bottom of the poured concrete hollow section, a poured section outer side template is arranged on the outer side of the poured concrete hollow section, and a concrete region to be poured is arranged above the poured section outer side template; a template cantilever frame is arranged on a back ridge channel steel of the template at the outer side of the poured section, and a shed cloth supporting device is arranged on the template cantilever frame;
the heat-preservation building envelope comprises heat-preservation shed cloth and a heat-preservation curtain; the heat-preservation shed cloth is arranged on the shed cloth supporting device; the heat-insulation curtain is laid between the concrete to-be-poured area and the last section of the poured concrete hollow section and is positioned on the outer side of the template scaffold;
the temperature control humidifying warm air furnace is arranged at the hollow part of the pier bottom and is connected with a water vapor pipeline, a warm air pipeline and a chimney pipeline;
the concrete conveying mechanism conveys concrete to the concrete to-be-poured area through a concrete conveying pipeline;
the cast concrete hollow section is divided into a plurality of sections, and a cast section ventilation opening is formed in each section of the cast concrete hollow section;
a hot air port is arranged on the temperature control humidifying hot air furnace, a layer of flame-retardant heat-preservation cotton is wrapped outside the hot air pipeline, one end of the hot air pipeline is connected with the hot air port, and the other end of the hot air pipeline penetrates through the last section of the poured section of the ventilation opening and extends upwards along the inner side of the heat-preservation curtain;
a water inlet and a water vapor outlet are respectively arranged on the temperature control humidifying air heating furnace, one end of the water vapor pipeline is connected with the water vapor outlet through a pipeline with a hole at the lower part, and the other end of the water vapor pipeline extends upwards to the vent of the poured section at the last but one stage;
the bottom end of the heat-insulating curtain is connected to the position below a cast section ventilation opening of the penultimate section of the cast concrete hollow section.
2. The hollow high pier concrete pouring heat preservation and maintenance system according to claim 1, characterized in that an area-to-be-poured inner formwork is provided around the inner side of the area to be poured, and an area-to-be-poured outer formwork is provided around the outer side of the area to be poured corresponding to the position of the area-to-be-poured inner formwork.
3. The hollow high pier concrete pouring heat preservation and maintenance system according to claim 1, wherein the chimney pipe extends upwards along the poured concrete hollow section and is communicated with the outside through heat preservation shed cloth.
4. The hollow high pier concrete pouring heat preservation maintenance system according to claim 2, wherein a gap is left between the external formwork of the area to be poured and the heat preservation curtain.
5. The hollow high pier concrete pouring heat preservation and maintenance system according to claim 1, wherein one end of the concrete conveying pipeline is located outside the bottom of the pier, and the other end of the concrete conveying pipeline enters the hollow pier through the poured section ventilation opening of the first section of the pier body and extends upwards to the inner side of the concrete pouring area.
6. The hollow high pier concrete pouring heat preservation and maintenance system of claim 1, further comprising an electric heater fan, wherein the electric heater fan is arranged on a formwork cantilever frame of a top concrete pouring area.
7. The hollow high pier concrete pouring heat preservation maintenance system according to claim 1, wherein the heat preservation shed cloth comprises a transparent plastic film, a heat preservation cotton quilt and a color strip cloth which are arranged in sequence; the heat preservation curtain comprises a heat preservation cotton quilt and color strip cloth which are arranged in sequence.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610046132.7A CN105625189B (en) | 2016-01-25 | 2016-01-25 | Hollow high pier concrete placement heat preservation maintenance system |
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| CN201610046132.7A CN105625189B (en) | 2016-01-25 | 2016-01-25 | Hollow high pier concrete placement heat preservation maintenance system |
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| CN105625189A CN105625189A (en) | 2016-06-01 |
| CN105625189B true CN105625189B (en) | 2020-05-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108385528B (en) * | 2016-09-18 | 2019-06-28 | 山东省交通科学研究院 | A kind of application method of low temperature season pier stud concrete heat-insulating health preserving equipment |
| CN106522106B (en) * | 2016-12-22 | 2019-04-09 | 中交路桥华南工程有限公司 | High tower steam curing system |
| CN112813805B (en) * | 2021-01-06 | 2022-10-25 | 四川路桥盛通建筑工程有限公司 | Construction method of variable-section thin-wall hollow high pier of stiffened framework |
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