CN111910909A - Heat insulation formwork applicable to overhead structure and construction method thereof - Google Patents
Heat insulation formwork applicable to overhead structure and construction method thereof Download PDFInfo
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- CN111910909A CN111910909A CN201910390860.3A CN201910390860A CN111910909A CN 111910909 A CN111910909 A CN 111910909A CN 201910390860 A CN201910390860 A CN 201910390860A CN 111910909 A CN111910909 A CN 111910909A
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- bottom plate
- cast
- heat insulation
- heat
- template
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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
- E04G9/00—Forming or shuttering elements for general use
- E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
- E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a heat-insulating template suitable for an overhead structure, which comprises a steel bar arranged in a cast-in-place bottom plate at the bottom of a house main body, and is characterized in that: the bottom of the cast-in-place bottom plate is provided with a heat insulation material, and hard anticorrosive materials are laid on the upper surface and the lower surface of the heat insulation material; the steel bars and the heat insulation material are connected together through fixing bolts. Meanwhile, the invention also discloses a construction method of the heat-insulation template. The invention has simple construction and high engineering efficiency, effectively solves the problems of difficult heat-insulating construction of the bottom plate and large workload of later maintenance, and can also obviously reduce the engineering cost.
Description
Technical Field
The invention relates to the field of engineering of permafrost regions, in particular to a heat-insulating template suitable for an overhead structure and a construction method thereof.
Background
In the permafrost region, in order to prevent that the heat of building self from transmitting to the underground through the earth's surface and leading to the permafrost to melt, thereby lead to the ground bearing layer to change, finally produce harm to the ground, consequently many buildings all adopt cast-in-place bottom plate and earth's surface to break away from and form built on stilts hollow structure, this kind of built on stilts hollow structure ventiduct can promote the heat dissipation of permafrost, have heat preservation thermal-insulated and sunshade effect simultaneously, can effectively reduce the earth's surface temperature, avoid the building to melt to the thermal interference of permafrost, thereby guarantee the stability of pile foundation.
Because the permafrost region has low environmental temperature, in order to improve the heat preservation effect and reduce the heating cost, the bottom plate heat preservation needs to be made, the distance between the overhead floor and the bottom plate is usually lower, the construction space for the bottom plate heat preservation is small, the difficulty is high, the heat preservation under the cast-in-place bottom plate is increased after the construction of the cast-in-place bottom plate is completed, the construction is inconvenient, the heat preservation material and the cast-in-place bottom plate are firm and difficult to stick together, and the subsequent maintenance work.
Disclosure of Invention
The invention aims to solve the technical problem of providing the heat-insulating template which effectively solves the problems of difficult heat-insulating construction of the bottom plate and large workload of later maintenance and is suitable for the overhead structure.
The invention also aims to provide a construction method of the heat-insulating template suitable for the overhead structure.
In order to solve the problems, the heat insulation template suitable for the overhead structure comprises a steel bar arranged in a cast-in-place bottom plate at the bottom of a house main body, and is characterized in that: the bottom of the cast-in-place bottom plate is provided with a heat insulation material, and hard anticorrosive materials are laid on the upper surface and the lower surface of the heat insulation material; the steel bars and the heat insulation material are connected together through fixing bolts.
And a male and female clamping groove is formed at the joint of the heat insulation material and the hard anticorrosive material.
The construction method of the heat preservation template suitable for the overhead structure comprises the following steps:
the method includes the steps that construction of a pile foundation is conducted on a permafrost layer, and an overhead hollow structure is formed on the ground surface;
the template bracket is well supported;
the high-density heat insulation material is clamped between the two layers of hard anticorrosive materials, and the male and female clamping grooves are reserved at the interface, so that the novel heat insulation template is obtained;
fourthly, the novel heat-preservation template is placed on the template bracket, and embedded steel bars are laid on the novel heat-preservation template and connected together through a plurality of fixing bolts;
fifthly, constructing a cast-in-place bottom plate supporting template at the bottom of the house main body;
sixthly, pouring concrete to complete the construction of the cast-in-place bottom plate;
and removing the template bracket when the concrete strength of the cast-in-place bottom plate reaches the design requirement, and forming an insulating layer and an anticorrosive layer on the cast-in-place bottom plate.
Compared with the prior art, the invention has the following advantages:
1. the joint of the heat insulation material and the hard anticorrosive material is provided with the male and female clamping grooves, so that tight connection is realized without gaps.
2. According to the invention, the bottom of the cast-in-place bottom plate is provided with the thermal insulation material, the upper surface and the lower surface of the thermal insulation material are both provided with the hard anticorrosive materials, and the steel bars in the cast-in-place bottom plate and the thermal insulation material are connected together through the fixing bolts, so that the traditional formwork work is replaced in the construction process, the cast-in-place bottom plate thermal insulation construction is completed at one time when the formwork is poured, the formwork does not need to be dismantled, the secondary construction of adding the bottom plate thermal insulation after the cast-in-place bottom plate is completed is avoided, the problems of difficult bottom plate thermal insulation construction, large later.
3. The invention has simple construction and high engineering efficiency.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is an enlarged view of a portion A of the present invention.
In the figure: 1-permafrost layer; 2, pile foundation; 3, the earth surface; 4, hollow in the air; 5, a house main body; 6, casting a bottom plate in situ; 7-hard anticorrosive material; 8, a heat insulation material; 9-fixing the bolt; and 10, reinforcing steel bars.
Detailed Description
As shown in figures 1-2, the heat-insulating template applicable to the overhead structure comprises a steel bar 10 arranged in a cast-in-place bottom plate 6 at the bottom of a house main body 5. The bottom of the cast-in-place bottom plate 6 is provided with a heat insulation material 8, and hard anticorrosive materials 7 are laid on the upper surface and the lower surface of the heat insulation material 8; the reinforcing steel bars 10 and the heat insulating material 8 are connected together through fixing bolts 9.
Wherein: and a male and female clamping groove is formed at the joint of the heat insulation material 8 and the hard anticorrosive material 7.
The hard anticorrosive material 7 is a plastic steel material, has anticorrosive property and certain rigidity strength.
A construction method of a heat preservation template suitable for an overhead structure comprises the following steps:
the construction method comprises the steps of constructing a pile foundation 2 on a permafrost layer 1, and forming an overhead hollow 4 on the ground surface 3;
the template bracket is well supported;
the high-density heat insulation material 8 is clamped between the two layers of hard anticorrosive materials 7, and male and female clamping grooves are reserved at the interface, so that the novel heat insulation template is obtained;
fourthly, the novel heat preservation template is placed on the template bracket, and embedded steel bars 10 are laid on the novel heat preservation template and connected together through a plurality of fixing bolts 9;
fifthly, constructing a cast-in-place bottom plate 6 formwork at the bottom of the house main body 5;
sixthly, pouring concrete to complete the construction of the cast-in-place bottom plate 6;
and (3) after the strength of the concrete of the cast-in-place bottom plate 6 reaches the design requirement, removing the template bracket, and forming an insulating layer and an anticorrosive layer on the cast-in-place bottom plate 6. An overhead sunshade structure is formed between the building and the ground surface 3, so that heat transfer from the building to a foundation is effectively isolated, the ventilation structure layer also promotes heat dissipation of the ground surface, and the heating effect of solar radiation on the ground surface is blocked.
The embodiment is that a research station for frozen soil engineering and environmental comprehensive observation of the north foot river of the Tibet plateau of the academy of sciences of China (located in the abdominal region of the Tibet plateau, 34 degrees of north latitude 51.2', 92 degrees of east longitude 56.4', and 4628 meters of altitude) is located in a permafrost region. The area of the bottom plate of the house built in 2017 is 600m2In the above way, the heat preservation template in the invention is adopted in the bottom plate heat preservation mode, and the heat preservation effect is better after trial. Meanwhile, the thickness of the insulation board is assumed to be 0.1m according to the field situation, and the density is 50kg/m3Coefficient of thermal conductivity 0.028W/(m).DEG C) and specific heat capacity of 1500J/(kg).deg.C); the concrete bottom plate has a thickness of 0.15m and a density of 2400 kg/m3Thermal conductivity coefficient of 1.74W/(m).Temperature is lower than that of the molten steel, and the specific heat capacity is 970J/(kg).deg.C); the bottom temperature of the heat-insulating plate is fitted into
In the formulatAs a matter of time, the time is,φis the initial phase. Both initial temperatures were 5 ℃. The finite element software is used for simulating the temperature difference, and the result shows that the temperature difference between two sides of the current year in 11 months can reach 2 ℃, and the temperature difference between two sides of the current year in 12 months can reach 1.5 ℃. Therefore, the method has better heat preservation effect.
Claims (3)
1. The utility model provides a heat preservation template suitable for overhead structure, is including placing reinforcing bar (10) in cast-in-place bottom plate (6) of house main part (5) bottom in, its characterized in that: the bottom of the cast-in-place bottom plate (6) is provided with a heat insulation material (8), and hard anticorrosive materials (7) are laid on the upper surface and the lower surface of the heat insulation material (8); the steel bar (10) and the heat insulation material (8) are connected together through a fixing bolt (9).
2. An insulation form suitable for use in an overhead structure as claimed in claim 1, wherein: and a male and female clamping groove is formed at the joint of the heat insulation material (8) and the hard anticorrosive material (7).
3. The construction method of the insulation formwork for the overhead structure as claimed in claim 1, comprising the steps of:
the construction method comprises the steps of constructing a pile foundation (2) on a permafrost layer (1), and forming an overhead hollow (4) on the ground surface (3);
the template bracket is well supported;
thirdly, a high-density heat insulation material (8) is clamped between the two layers of hard anticorrosive materials (7), and male and female clamping grooves are reserved at the interface, so that the novel heat insulation template is obtained;
fourthly, the novel heat-preservation template is placed on the template bracket, embedded steel bars (10) are laid on the novel heat-preservation template and connected together through a plurality of fixing bolts (9);
carrying out construction on a formwork of the cast-in-place bottom plate (6) at the bottom of the house main body (5);
sixthly, pouring concrete to complete the construction of the cast-in-place bottom plate (6);
and removing the template bracket when the strength of the concrete of the cast-in-place bottom plate (6) reaches the design requirement, and forming an insulating layer and an anticorrosive layer on the cast-in-place bottom plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390860.3A CN111910909A (en) | 2019-05-10 | 2019-05-10 | Heat insulation formwork applicable to overhead structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910390860.3A CN111910909A (en) | 2019-05-10 | 2019-05-10 | Heat insulation formwork applicable to overhead structure and construction method thereof |
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| Publication Number | Publication Date |
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| CN111910909A true CN111910909A (en) | 2020-11-10 |
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| CN201910390860.3A Pending CN111910909A (en) | 2019-05-10 | 2019-05-10 | Heat insulation formwork applicable to overhead structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680005A (en) * | 2022-10-09 | 2023-02-03 | 中交第一公路勘察设计研究院有限公司 | Assembled overhead structure of highway in high-intensity permafrost region and construction method |
-
2019
- 2019-05-10 CN CN201910390860.3A patent/CN111910909A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115680005A (en) * | 2022-10-09 | 2023-02-03 | 中交第一公路勘察设计研究院有限公司 | Assembled overhead structure of highway in high-intensity permafrost region and construction method |
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