CN219491308U - Bridge-cut-off heat insulation connecting piece for concrete slab - Google Patents
Bridge-cut-off heat insulation connecting piece for concrete slab Download PDFInfo
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- CN219491308U CN219491308U CN202320415449.9U CN202320415449U CN219491308U CN 219491308 U CN219491308 U CN 219491308U CN 202320415449 U CN202320415449 U CN 202320415449U CN 219491308 U CN219491308 U CN 219491308U
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- concrete slab
- steel bar
- connector
- heat insulation
- bridge
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- 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
Abstract
A concrete slab bridge cut-off heat insulation connector comprising: bridge cut-off thermal-insulated connecting portion, it includes: the steel bar part comprises a first steel bar and a second steel bar which are horizontally arranged, the first steel bar is parallel to the second steel bar and is positioned above the second steel bar, the first steel bar and the second steel bar are fixedly connected through a steel plate, the plastic heat preservation box is arranged in the plastic heat preservation box, and the heat insulation part is filled in a space between the plastic heat preservation box and the steel bar part; a concrete slab connecting part, wherein one end of the same side of the first steel bar and one end of the same side of the second steel bar extend horizontally to form the concrete slab connecting part; the building connecting part is formed by horizontally extending the other end of the first steel bar, then vertically extending downwards, and fixedly connecting the other end of the second steel bar with the first steel bar after horizontally extending; wherein, in the concrete slab connecting portion, the length that the second reinforcing bar extends horizontally is less than the length that the first reinforcing bar extends horizontally.
Description
Technical Field
The utility model relates to a concrete slab bridge-cut-off heat insulation connecting piece, and belongs to the technical field of building structure connection.
Background
In architectural design, it is often desirable to design concrete panels (including but not limited to overhanging panels, semi-overhanging panels, etc.) in a main structure for placement of air conditioning equipment and the like. As the concrete slab is connected to the main structure, a heat conduction channel is formed, thereby causing: indoor heat in winter heating period diffuses to the outdoor, and heating cost is increased; and the outdoor heat in the cooling period in summer is diffused to the indoor, so that the cooling cost is increased. Besides heat loss, the indoor side of the part can reduce the temperature due to the heat loss in the heating period, and enzyme change can occur, so that the indoor air quality is reduced, and the human health is affected. This phenomenon is called the "thermal bridge effect" and the heat transfer channel is called the "thermal bridge".
In order to eliminate the influence of the heat bridge, the current main bridge-breaking and heat-insulating mode of the building concrete slab is to completely wrap the concrete slab by using a heat-insulating plate. However, the construction process of the method is complicated, and when the air conditioner equipment is installed later, the heat insulation board is required to be destroyed to fix the equipment on the concrete slab, so that the heat insulation effect is weakened.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the concrete slab bridge-cut-off heat insulation connecting piece, which meets the requirement of concrete slab pre-arching by shortening the length of the lower side reinforcing steel bars in the concrete slab connecting part; the plastic heat preservation box with the sealing cover can reduce the influence of the construction process on the heat insulation part; the galvanized layer outside the steel bar can reduce the thickness of the protective layer, so that the bridge-cut-off heat insulation connecting piece for the concrete slab can meet the requirements of equipment bearing, energy conservation of outer protection of the building, attractive appearance and the like under the condition that the heat insulation board is not externally attached, and the connection between the building and the concrete slab is realized.
The technical problems to be solved by the utility model are realized by the following technical scheme:
a concrete slab bridge cut-off heat insulation connection, the concrete slab bridge cut-off heat insulation connection comprising:
bridge cut-off thermal-insulated connecting portion, it includes:
at least one steel bar part, wherein the steel bar part comprises a first steel bar and a second steel bar which are horizontally arranged, the first steel bar is parallel to the second steel bar and is positioned above the second steel bar, the first steel bar is fixedly connected with the second steel bar through a steel plate, the steel bar part is positioned in the plastic heat preservation box,
a heat insulating part filled in a space between the plastic insulation box and the reinforcing bar part;
a concrete slab connecting portion, wherein one end of the same side of the first steel bar and one end of the same side of the second steel bar extend horizontally to form the concrete slab connecting portion;
the building connecting part is characterized in that the other end of the first steel bar horizontally extends and then vertically extends downwards, and the other end of the second steel bar horizontally extends and then is fixedly connected with the first steel bar to form the building connecting part;
wherein, in the concrete slab connecting portion, the length that the second reinforcing bar extends horizontally is less than the length that the first reinforcing bar extends horizontally.
Specifically, the concrete slab connecting part is embedded in the concrete slab, the building connecting part is embedded in the building, and the broken bridge heat insulation connecting part is positioned between the concrete slab and the building and is respectively attached to the concrete slab and the building.
In order to increase the bearing capacity of the reinforcement parts, the diameters of the first reinforcement and the second reinforcement are 10mm or 12mm.
In order to meet the pre-arching design of the concrete slab, the pre-arching value is increased, and in the concrete slab connecting part, the second reinforcing steel bar horizontally extends for 70% of the length of the first reinforcing steel bar horizontally.
Preferably, the material of the heat insulation part is grade A rock wool.
In order to prevent water, mortar or the like from entering the plastic heat preservation box in the construction process, the plastic heat preservation box comprises an upper end cover, a lower end cover and a sealing cover; the upper end cover and the lower end cover are provided with grooves for enabling the first steel bars and the second steel bars to penetrate through, and the sealing cover is used for sealing the grooves.
In order to realize that the concrete slab bridge-cut-off heat insulation connecting piece can be suitable for concrete slabs with different thicknesses, the upper end cover and the lower end cover are connected through a self-locking structure, the self-locking structure is a boss and a clamping groove which are respectively and correspondingly arranged on the upper end cover and the lower end cover, and the boss and the clamping groove extend along the length direction of the plastic heat insulation box. The outer side of each side face of the upper end cover is provided with two bosses which are arranged at intervals in parallel, and the inner side of each side face of the lower end cover is provided with two clamping grooves which are arranged at intervals in parallel.
In order to prevent corrosion and reduce the thickness of the protective layer, the steel bar part, the concrete slab connecting part and the building connecting part are externally provided with a galvanized layer.
In summary, the length of the lower steel bars in the concrete slab connecting part is shortened, so that the requirement of pre-arching of the concrete slab is met; the plastic heat preservation box with the sealing cover can reduce the influence of the construction process on the heat insulation part; the galvanized layer outside the steel bar can reduce the thickness of the protective layer, so that the bridge-cut-off heat insulation connecting piece for the concrete slab can meet the requirements of equipment bearing, energy conservation of outer protection of the building, attractive appearance and the like under the condition that the heat insulation board is not externally attached, and the connection between the building and the concrete slab is realized.
The technical scheme of the utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a partial cross-sectional view of a concrete slab bridge cut-off insulation connector of the present utility model;
FIG. 2 is a schematic illustration of the concrete slab bridge cut-off insulation connector of the present utility model after installation;
FIG. 3 is a schematic view of the structure of the concrete slab bridge-cut-off insulation connector of the present utility model with the insulation portion and plastic insulation box removed;
FIG. 4 is a schematic view of the structure of the upper end cap, the lower end cap and the cover of the present utility model;
fig. 5 is a cross-sectional view of the upper and lower end caps of the present utility model engaged by a self-locking structure.
Detailed Description
FIG. 1 is a partial cross-sectional view of a concrete slab bridge cut-off insulation connector of the present utility model; FIG. 2 is a schematic illustration of the concrete slab bridge cut-off insulation connector of the present utility model after installation; fig. 3 is a schematic view of the structure of the bridge cut-off insulation connector of the present utility model after removal of the insulation and plastic insulation box. As shown in fig. 1 to 3, the concrete slab bridge-cut-off heat insulation connector of the present utility model includes a bridge-cut-off heat insulation connector 100, a concrete slab connector 200, and a building connector 300. The concrete slab connecting portion 200 is embedded in the concrete slab 400, the building connecting portion 300 is embedded in the building 500, and the broken bridge heat insulation connecting portion 100 is located between the concrete slab 400 and the building 500 and is respectively attached to the concrete slab 400 and the building 500, thereby connecting the concrete slab 400 to the building 500.
The bridge-cut-off heat insulation connection part 100 comprises a heat insulation part 110, a plastic heat insulation box 120 and at least one steel bar part 130. The reinforcement part 130 includes a first reinforcement 131 and a second reinforcement 132 horizontally disposed, wherein the first reinforcement 131 is parallel to the second reinforcement 132 and is located above the second reinforcement 132, and the first reinforcement 131 and the second reinforcement 132 are fixedly connected (welded, etc.) through a steel plate 150.
In order to increase the bearing capacity of the reinforcement part 130, the diameters of the first reinforcement 131 and the second reinforcement 132 are preferably 10mm or 12mm. Further, in order to improve the bending load capacity of the connector, the distance between the first steel bar 131 and the second steel bar 132 is preferably set as follows:
the distance between the first reinforcement 131 and the second reinforcement 132=the thickness of the concrete slab 400-30 mm-2 times the reinforcement diameter.
In the present utility model, the structure in which the first and second reinforcing bars 131 and 132 are fixedly connected with the steel plate 150 is used to transfer concrete slabs and external loads, wherein the steel plate 150 is used to bear vertical shearing force and can increase the rigidity of the connection portion, reduce the vertical displacement of the end of the concrete slab under the load, and the first and second reinforcing bars 131 and 132 are used to bear bending moment, when the bending moment occurs, the upper reinforcing bars are pulled, the lower reinforcing bars are pressed, and the anchoring lengths of the upper and lower reinforcing bars are obtained according to national standard calculation.
The heat insulating part 110 is disposed around at least one reinforcing bar part 130, and its periphery is wrapped by the plastic insulation case 120. In other words, the heat insulating part 110 is filled in the space between the plastic thermal insulation box 120 and the reinforcing bar part 130.
In order to keep the heat transfer between the concrete slab 400 and the building 500 as small as possible, the heat insulation part 110 is preferably made of a material with low heat conductivity, for example, when the concrete slab bridge-cut-off heat insulation connector needs to have a fireproof function, the material of the heat insulation part 110 may be rock wool with low heat conductivity and a combustion performance of class a (i.e., class a rock wool), at this time, the concrete slab bridge-cut-off heat insulation connector has good heat insulation effect and also plays a fireproof role, so as to prevent the bearing capacity of the stress part of the connection part from being weakened under the condition of fire; when the fireproof requirement is not high, a molded polystyrene board (EPS), an extruded polystyrene board (XPS), a rigid polyurethane heat-insulating board (PU) and the like with lower heat conductivity coefficient can be selected to improve the thermal performance. The material of the heat insulating part 110 is not limited in the present utility model, and one skilled in the art may select according to circumstances as long as it can reduce heat conduction between the concrete slab 400 and the building 500.
FIG. 4 is a schematic view of the structure of the upper end cap, the lower end cap and the cover of the present utility model; fig. 5 is a cross-sectional view of the upper and lower end caps of the present utility model engaged by a self-locking structure. As shown in fig. 4 and 5, the plastic thermal insulation box 120 is a cuboid or a substantially cuboid, and includes an upper end cover 121, a lower end cover 122, and a cover 123. The upper and lower end caps 121 and 122 are provided with grooves 124 for passing the first and second reinforcing bars 131 and 132 therethrough. The upper end cover 121 and the lower end cover 122 are connected by a self-locking structure, the utility model is not limited to the type of the self-locking structure, and a person skilled in the art can use the self-locking structure in the prior art to clamp the upper end cover 121 and the lower end cover 122. The width of the grooves 124 is preferably the same as the diameters of the first and second reinforcing bars 131 and 132, and the number of the grooves 124 corresponds to the number of the reinforcing bar parts 130.
The height (length in the vertical direction) of the plastic thermal insulation box 120 is preferably 100mm to 120mm so as to conform to the plate thickness commonly used in engineering.
Specifically, the upper end cap 121 includes a top surface and two opposite side surfaces, and the lower end cap 122 includes a bottom surface and two opposite side surfaces.
Illustratively, in this embodiment, the self-locking structure is a boss and a slot respectively disposed on the upper end cover 121 and the lower end cover 122, and the boss and the slot extend along the length direction of the plastic thermal insulation box 120, and when the boss is clamped into the slot, the upper end cover 121 and the lower end cover 122 are clamped together. Alternatively, the cross sections of the boss and the clamping groove can be square, trapezoid, triangle or round, etc.
The present utility model is not limited to the number of bosses and slots, which are two for the purpose of flexible application of the plastic insulation box 120 to concrete slabs of different thickness, as shown in the drawings. Specifically, the outer side of each side of the upper end cover 121 has two parallel and spaced bosses, and the inner side of each side of the lower end cover 122 has two parallel and spaced slots, so that the height of the plastic thermal insulation box 120 can be changed by clamping different bosses with different slots, so that the plastic thermal insulation box surrounds the thermal insulation parts 110 with different thicknesses, and is applied to concrete slabs with different thicknesses.
The cover 123 is used for sealing the slot 124 to prevent water or mortar from entering the plastic insulation box during construction. The present utility model is not limited to the structure of the cover 123 as long as it can block the slot 124. I.e. the slot 124 is co-sealed by the cover 123 and the first and second rebars 131, 132.
The present utility model is not limited to the number of the reinforcing bar parts 130, and one skilled in the art may select a design according to the structure of the concrete slab 400, etc.
One end of the first reinforcement bar 131 on the same side as the second reinforcement bar 132 extends horizontally to form a concrete slab connecting portion 200.
Since the portion of the concrete slab 400 requires the pre-arching design, the second reinforcing bar 132 has a horizontally extending length less than that of the first reinforcing bar 131 in order to increase the pre-arching value. Preferably, the second reinforcement bar 132 has a horizontally extending length of 70% of the horizontally extending length of the first reinforcement bar 131. It has been proved by experiments that the concrete slab 400 can be pre-arched by only 3mm in case that the length of the horizontal extension of the second reinforcement 132 is the same as the length of the horizontal extension of the first reinforcement 131, and that the concrete slab 400 can be pre-arched by 7mm in case that the length of the horizontal extension of the second reinforcement 132 is 70% of the length of the horizontal extension of the first reinforcement 131.
Since the concrete structural design specification (GB 50010-2002) specifies that the thickness of the pressed reinforcing bar cover (the distance from the outermost side of the reinforcing bar to the bottom edge of the concrete slab) is not less than one time the diameter of the reinforcing bar, the reinforcing bar can be made to meet the standard design while satisfying the mechanical strength by shortening the length of the second reinforcing bar 132 extending horizontally and appropriately increasing the diameter of the reinforcing bar (e.g., 12 mm).
The other end of the first reinforcement bar 131 extends horizontally and then extends vertically downward, and the other end of the second reinforcement bar 132 extends horizontally and then is fixedly connected (e.g., welded, etc.) with the first reinforcement bar 131 to form the building connection part 300. Namely, the building connection part 300 is formed of F-shaped reinforcing bars.
The concrete structural design Specification (GB 50010-2002) also specifies that the thickness of the protective layer of carbon steel reinforcement of an open air environment concrete member is at a minimum 20mm, but the protective layer thickness can be properly reduced when anti-corrosion measures are taken, but the minimum cannot be lower than the diameter of the reinforcement. In order to optimize the concrete protection layer to a lower value and further increase the distance between the upper and lower reinforcement bars and improve the bending resistance of the concrete slab bridge-cutoff heat insulation connector under the condition that the design life is satisfied, in the present utility model, a galvanized layer (not shown in the drawing) is provided outside the reinforcement portion 130, the concrete slab connection portion 200 and the building connection portion 300.
By arranging the galvanized layer, the thickness of the concrete protective layer can be reduced, so that the load of the concrete slab bridge-cut-off heat insulation connecting piece is reduced, thinner reinforcing steel bars can be used, the heat-insulation bridge effect can be effectively improved by reducing the using amount of the reinforcing steel bars, and the concrete slab is not required to be wrapped by using a heat-insulation board when the concrete slab bridge-cut-off heat insulation connecting piece is used for connecting a building and a concrete slab, so that the concrete slab bridge-cut-off heat insulation connecting piece is simpler and more convenient to use in comparison with the traditional mode, and the heat-insulation board attached to the concrete slab is not required to be checked and replaced regularly in the life cycle of the building, thereby achieving the aim of saving cost.
In summary, the length of the lower steel bars in the concrete slab connecting part is shortened, so that the requirement of pre-arching of the concrete slab is met; the plastic heat preservation box with the sealing cover can reduce the influence of the construction process on the heat insulation part; the galvanized layer outside the steel bar can reduce the thickness of the protective layer, so that the bridge-cut-off heat insulation connecting piece for the concrete slab can meet the requirements of equipment bearing, energy conservation of outer protection of the building, attractive appearance and the like under the condition that the heat insulation board is not externally attached, and the connection between the building and the concrete slab is realized.
Claims (9)
1. A concrete slab bridge cut-off heat insulation connector, characterized in that the concrete slab bridge cut-off heat insulation connector comprises:
bridge cut-off thermal-insulated connecting portion, it includes:
at least one steel bar part, wherein the steel bar part comprises a first steel bar and a second steel bar which are horizontally arranged, the first steel bar is parallel to the second steel bar and is positioned above the second steel bar, the first steel bar is fixedly connected with the second steel bar through a steel plate,
the steel bar part is positioned in the plastic heat preservation box,
a heat insulating part filled in a space between the plastic insulation box and the reinforcing bar part;
a concrete slab connecting portion, wherein one end of the same side of the first steel bar and one end of the same side of the second steel bar extend horizontally to form the concrete slab connecting portion;
the building connecting part is characterized in that the other end of the first steel bar horizontally extends and then vertically extends downwards, and the other end of the second steel bar horizontally extends and then is fixedly connected with the first steel bar to form the building connecting part;
wherein, in the concrete slab connecting portion, the length that the second reinforcing bar extends horizontally is less than the length that the first reinforcing bar extends horizontally.
2. The concrete slab break bridge insulated connector of claim 1, wherein said concrete slab connector is embedded in a concrete slab, said building connector is embedded in a building, and said break bridge insulated connector is positioned between and in respective engagement with said concrete slab and said building.
3. The concrete slab bridge cut-off heat insulation joint of claim 1, wherein the first rebar and the second rebar have a diameter of 10mm or 12mm.
4. The concrete slab bridge cut-off heat insulating joint of claim 3, wherein in the concrete slab joint, the second rebar extends horizontally 70% of the length of the first rebar.
5. The concrete slab bridge cut-off heat insulation joint of claim 1, wherein the insulation is of class a rock wool.
6. The concrete slab bridge-cut-off heat insulation connector of claim 1, wherein the plastic insulation box comprises an upper end cap, a lower end cap, and a cover; the upper end cover and the lower end cover are provided with grooves for enabling the first steel bars and the second steel bars to penetrate through, and the sealing cover is used for sealing the grooves.
7. The concrete slab bridge-cutoff heat insulation connector as recited in claim 6, wherein the upper end cover and the lower end cover are connected by a self-locking structure, the self-locking structure is a boss and a clamping groove which are respectively and correspondingly arranged on the upper end cover and the lower end cover, and the boss and the clamping groove extend along the length direction of the plastic heat insulation box.
8. The concrete slab bridge-cutoff thermal insulation connector as recited in claim 7, wherein each lateral side of the upper end cap has two parallel spaced bosses and each lateral side of the lower end cap has two parallel spaced slots.
9. The concrete slab break bridge insulation connector of claim 1, wherein a galvanized layer is disposed outside of the rebar portion, the concrete slab connector portion, and the building connector portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320415449.9U CN219491308U (en) | 2023-03-07 | 2023-03-07 | Bridge-cut-off heat insulation connecting piece for concrete slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320415449.9U CN219491308U (en) | 2023-03-07 | 2023-03-07 | Bridge-cut-off heat insulation connecting piece for concrete slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219491308U true CN219491308U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320415449.9U Active CN219491308U (en) | 2023-03-07 | 2023-03-07 | Bridge-cut-off heat insulation connecting piece for concrete slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219491308U (en) |
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2023
- 2023-03-07 CN CN202320415449.9U patent/CN219491308U/en active Active
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