CN209958607U - Heat preservation connection structure of prefabricated sandwich wallboard - Google Patents
Heat preservation connection structure of prefabricated sandwich wallboard Download PDFInfo
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- CN209958607U CN209958607U CN201920581383.4U CN201920581383U CN209958607U CN 209958607 U CN209958607 U CN 209958607U CN 201920581383 U CN201920581383 U CN 201920581383U CN 209958607 U CN209958607 U CN 209958607U
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Abstract
The utility model discloses a heat preservation connection structure of a prefabricated sandwich wallboard, which comprises a plurality of metal connecting pieces and non-metal connecting pieces; the non-metal connecting pieces are uniformly distributed among the outer leaf concrete wallboard, the insulation board and the inner leaf concrete wallboard according to the requirement of horizontal drawing force, and each non-metal connecting piece consists of an outer leaf concrete wallboard anchoring end, an insulation board connecting sleeve and an inner leaf concrete wallboard anchoring end; a plurality of metal connecting pieces are arranged between the nonmetal connecting pieces according to the vertical load requirement, and are equally divided into triangular or trapezoidal structures which are formed by oblique pull rods, horizontal pull rods and anchoring ends, the common ends of the oblique pull rods and the horizontal pull rods are fixedly connected with a transverse and longitudinal steel bar net framework in the outer leaf concrete wallboard, and the anchoring ends are anchored in the inner leaf concrete wallboard. The utility model discloses the mechanics characteristics of two kinds of connecting pieces of full play have good thermal property simultaneously, greatly reduced metal connecting piece's use quantity, guarantee the energy-conserving heat insulating ability of wallboard.
Description
Technical Field
The utility model belongs to the technical field of the precast concrete outer wall, in particular to heat preservation joint construction of prefabricated sandwich wallboard.
Background
With the continuous development of assembly type buildings, the precast concrete sandwich heat-insulating wall panel is gradually becoming the development trend of the outer wall of the assembly type building due to the good energy-saving heat-insulating performance, durability and fireproof performance. The heat-insulating connector of the prefabricated concrete sandwich heat-insulating wall board is a key structure for connecting the inner and outer reinforced concrete wall boards and the heat-insulating board, so that the performance of the heat-insulating connector plays a crucial role in improving the performance of the prefabricated sandwich heat-insulating wall body. At present, the heat-insulating connecting piece at home and abroad mainly comprises a metal connecting piece and a nonmetal connecting piece; the metal connecting piece has good shear resistance and bending resistance, and also has good ductility and deformation adaptability, but the heat insulation performance of the heat insulation wallboard is influenced due to the high heat conductivity coefficient of the metal; the nonmetal connecting pieces (such as FRP connecting pieces) generally have lower heat conductivity coefficient and good corrosion resistance, the thermal expansion coefficient is close to that of reinforced concrete, so that the relatively larger sliding between the heat-insulating connecting pieces and the inner and outer reinforced concrete wallboards can be avoided, but the defects of small tensile elastic modulus, low shearing strength and the like of the nonmetal connecting pieces can cause the interlaminar shearing damage of the inner and outer reinforced concrete wallboards at the heat-insulating connecting pieces.
Due to the performance defects of the metal connecting pieces and the nonmetal connecting pieces, in the prefabricated concrete sandwich heat-insulation wall board with ultralow energy consumption (the thickness of the heat-insulation board is more than 100 mm), the metal connecting pieces are difficult to meet the thermal performance requirements, and the application of the nonmetal connecting pieces in the sandwich wall board with ultralow energy consumption is also limited due to the influence of the shearing strength of the nonmetal connecting pieces.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heat preservation joint construction suitable for prefabricated sandwich wallboard of ultralow energy consumption (more than heated board thickness 100 mm), solved above-mentioned background, use the metal connecting piece to be difficult to reach the defect that ultralow energy consumption wallboard thermal property or use nonmetal connecting piece mechanical properties to be difficult to guarantee simply, through metal connecting piece and nonmetal connecting piece combination heat preservation joint construction, reach the thermal property and the mechanical properties requirement that satisfy ultralow energy consumption sandwich wallboard simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a heat preservation connection structure of prefabricated sandwich wallboard, prefabricated sandwich wallboard includes outer page of concrete wallboard, heated board and interior page of concrete wallboard, be equipped with horizontal and vertical steel reinforcement net skeleton in the outer page of concrete wallboard; the heat-preservation connecting structure is characterized by comprising a plurality of metal connecting pieces and nonmetal connecting pieces;
the nonmetal connecting pieces are uniformly distributed among the outer leaf concrete wallboard, the heat-insulating board and the inner leaf concrete wallboard according to the horizontal drawing force requirement of the prefabricated sandwich wallboard, and each nonmetal connecting piece consists of an outer leaf concrete wallboard anchoring end, a heat-insulating board connecting sleeve and an inner leaf concrete wallboard anchoring end;
a plurality of the metal connecting piece is laid according to the vertical load requirement of prefabricated sandwich wallboard between the non-metal connecting piece, equally divide and do not be for by oblique pull rod, horizontal compression bar and anchor end integrated into one piece's triangle-shaped or trapezium structure, pull rod and horizontal compression bar's common end and the violently indulge reinforcing bar net skeleton fixed connection in outer page or leaf concrete wallboard to one side, the anchor end anchor is in interior page or leaf concrete wallboard.
Furthermore, in each metal connecting piece, the included angle between the diagonal tension rod and the horizontal compression rod is 60-75 degrees.
Furthermore, the metal connecting piece is a stainless steel connecting piece, has a circular section and has a diameter of 8-20 mm; the metal connecting piece is in an opening form at the anchoring end, the anchoring end penetrates through the heat insulation board and then is anchored in the inner leaf concrete wallboard in a straight anchor or bent anchor form according to the thickness of the inner leaf concrete wallboard, and the length of the vertical anchoring section of the anchoring end is larger than or equal to 15 times of the diameter of the metal connecting piece during bending anchoring.
Furthermore, each non-metal connecting piece is an FRP connecting piece and is of a rod-shaped structure.
Furthermore, each non-metal connecting piece mainly comprises a column-type central long rod with a plurality of axial convex ribs and a positioning envelope sleeved on the periphery of the long rod, and two ends of the central long rod are respectively provided with a wedge-shaped groove; the positioning envelope is used as the heat-insulation connecting sleeve, and the length of the positioning envelope is set according to the thickness of the heat-insulation plate; the two ends of the column-type central long rod protruding out of the positioning envelope are respectively used as the anchoring end of the outer leaf concrete wallboard and the anchoring end of the inner leaf concrete wallboard.
The utility model provides a pair of prefabricated sandwich wallboard's heat preservation joint construction, the prefabricated sandwich wallboard of the ultralow energy consumption of specially adapted (insulation board thickness more than 100 mm), its advantage:
(1) the metal connecting piece and the nonmetal connecting piece are combined, so that the metal connecting piece has good mechanical property and gives full play to the characteristic of high tensile strength of the metal connecting piece.
(2) The metal connecting pieces and the nonmetal connecting pieces are combined, so that the wallboard has good thermal performance, the use of nonmetal connection greatly reduces the use quantity of the metal connecting pieces, effectively reduces the heat conductivity of the connecting pieces, and ensures the energy conservation of the wallboard.
(3) The metal connecting pieces and the nonmetal connecting pieces are combined, so that the characteristics of the connecting pieces of different types are fully exerted, the total using quantity of the connecting pieces can be greatly reduced, the construction efficiency can be improved, and the cost is reduced.
Drawings
Fig. 1 is a schematic plan view of the heat-insulating connection structure of the prefabricated sandwich wall panel according to the embodiment of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
Fig. 3 is a longitudinal sectional view of fig. 1.
Fig. 4 is a schematic structural view of the metal connector in fig. 1, wherein (a) is a triangle and (b) is a trapezoid.
Fig. 5 is a schematic view of the non-metallic connector of fig. 1.
In fig. 1-5, 1 is an outer leaf concrete wallboard, 2 is a heat insulation board, 3 is an inner leaf concrete wallboard, 4 is a metal connecting piece, 5 is a non-metal connecting piece, 6 is an outer leaf concrete wallboard reinforcing mesh, 7 is a metal connecting piece diagonal tension compression bar, and 8 is a metal connecting piece horizontal compression bar; 9 is a metal connector anchor end; 10 is the anchoring end of the non-metal connecting piece outer leaf concrete wallboard, 11 is the connecting sleeve of the non-metal connecting piece heat-insulating board, and 12 is the anchoring end of the non-metal connecting piece inner leaf concrete wallboard.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a heat preservation joint construction of prefabricated sandwich wallboard, as shown in figure 1 ~ 5. The prefabricated sandwich wallboard comprises an outer leaf concrete wallboard 1, a heat insulation board 2 and an inner leaf concrete wallboard 3; the heat-insulation connecting structure is particularly suitable for prefabricated sandwich wallboards with ultra-low energy consumption (the thickness of the heat-insulation board 2 is more than 100 mm), the thickness of the outer-leaf concrete wallboard 1 is 50-80 mm, and a transverse and longitudinal reinforcing mesh framework 6 is arranged in the outer-leaf concrete wallboard 1; the inner leaf concrete wall board 3 is a reinforced concrete wall board with the thickness of more than 100mm and the strength of not less than C30. The heat preservation connection structure comprises a plurality of metal connecting pieces 4 and nonmetal connecting pieces 5; the non-metal connecting pieces 5 are uniformly distributed among the outer leaf concrete wall board 1, the heat insulation board 2 and the inner leaf concrete wall board 3 according to the requirement of horizontal drawing force, and each non-metal connecting piece 5 consists of an outer leaf concrete wall board anchoring end 10, a heat insulation board connecting sleeve 11 and an inner leaf concrete wall board anchoring end 12; a plurality of metal connecting pieces 4 are laid between the nonmetal connecting pieces 5 according to the vertical load requirement, equally divide and do not be by oblique compression bar 7, horizontal compression bar 8 and 9 integrated into one piece's of anchor end triangle-shaped or trapezium structure, and oblique compression bar 7 and horizontal compression bar 8's common end and the horizontal and vertical steel reinforcement net skeleton 6 fixed connection in the outer page of concrete wallboard, anchor end 9 anchor is in interior page of concrete wallboard 3.
The specific implementation manners of the components of the present embodiment are described as follows:
the metal connecting piece 4 is made of stainless steel (such as 304 stainless steel), has a circular cross section, and can be verified, calculated and adjusted according to the size of the wallboard, and the diameter of the metal connecting piece is generally 8-20 mm. The utility end of the diagonal tension rod 7 and the horizontal compression rod 8 of the metal connecting piece 4 is fixedly connected with the transverse and longitudinal steel bar net framework 6 in the outer page concrete wallboard 1 through welding or binding, the included angle between the diagonal tension rod 7 and the horizontal compression rod 8 is 60-75 degrees, and the anchoring stability is ensured while the diagonal tension effect of the diagonal tension rod is ensured. The metal connecting piece 4 is in the form of an opening at the anchoring end 9, the anchoring end 9 penetrates through the insulation board 2 and then is anchored in the inner leaf concrete wallboard 3 in the form of a straight anchor or a bent anchor according to the thickness of the inner leaf concrete wallboard 3, when the inner leaf concrete wallboard 3 is thick and the straight anchor length is met, the straight anchor or the bent anchor can be adopted, when the inner leaf concrete wallboard 3 is thin and the straight anchor length is not met, the bent anchor is adopted, and when the bent anchor is adopted, the length of the vertical anchoring section is larger than or equal to 15 times of the diameter of the metal connecting piece. Metal connecting piece 4 is required according to the vertical load of prefabricated sandwich wallboard, arranges 2 ~ 4, and the preferred upper portion setting that is close to prefabricated sandwich wallboard ensures that metal connecting piece atress form is the pulling force.
The nonmetal connecting piece 5 is made of Fiber Reinforced Polymer (FRP) and integrally has a rod-shaped structure, and the length of the insulation board connecting sleeve 11 of the nonmetal connecting piece 5 is 100-250 mm according to different thicknesses of the insulation boards 2. The non-metal connecting member 5 of the present embodiment mainly comprises a cylindrical central long rod with a plurality of axial ribs and a positioning envelope sleeved on the periphery of the long rod, wherein both ends of the central long rod are respectively provided with a wedge-shaped groove (refer to a connecting member for a concrete sandwich plate, which has been proposed by the applicant, application No. 201320176708.3). The positioning envelope serves as a heat-insulating connecting sleeve 11, and the length of the positioning envelope is set according to the thickness of the heat-insulating plate 2. The two ends of the column-type central long rod protruding out of the positioning envelope are respectively used as an outer leaf concrete wallboard anchoring end 10 and an inner leaf concrete wallboard anchoring end 12, the length of the outer leaf concrete wallboard anchoring end 10 is not less than 3cm, the distance from the end part to the outer side of the outer leaf concrete wallboard 1 is not less than the minimum protective layer thickness, the length of the inner leaf concrete wallboard anchoring end 12 is not less than 50mm, the distance from the end part to the outer side of the inner leaf concrete wallboard 3 is not less than the minimum protective layer thickness, and preferably, the outer leaf concrete wallboard anchoring end 10 and the inner leaf concrete wallboard anchoring end 12 are triangular. The nonmetal connecting pieces 5 are uniformly arranged in the prefabricated sandwich wallboard according to the horizontal drawing force requirement of the prefabricated sandwich wallboard, and the requirement of horizontal load in unit area is met.
The working principle of the heat-preservation connecting structure is as follows:
the metal connecting piece 4 is firmly connected with the transverse and longitudinal steel bar mesh frameworks 6 in the outer page concrete wallboard 1 through welding or binding, and the weight and other vertical loads of the outer page concrete wallboard 1 are transmitted to the metal connecting piece 4 through the transverse and longitudinal steel bar mesh frameworks 6; the metal connecting piece 4 bears the vertical load of the metal connecting piece by utilizing the self diagonal tension rod 7, the horizontal compression rod 8 resists the horizontal load component of the diagonal tension rod, and finally the component is transmitted to the inner leaf concrete wallboard 3 through the anchoring end 9 of the metal connecting piece. The nonmetal connecting piece 5 connects the outer leaf concrete wall board 1, the heat insulation board 2 and the inner leaf concrete wall board 3 into a whole through the outer leaf concrete wall board anchoring end 10, the heat insulation board connecting sleeve 11 and the inner leaf concrete wall board anchoring end 12, bears the horizontal tension of the whole and keeps the integrity of the whole. In addition, the use of nonmetal connection 5, greatly reduced the use quantity of metal connecting piece 4, the energy-conservation nature of wallboard is guaranteed to the heat conductivity of effectual reduction connecting piece.
Contain the utility model discloses the construction process of heat preservation joint construction's prefabricated sandwich wallboard as follows:
(1) determining the arrangement number and the positions of the metal connecting pieces 4 and the nonmetal connecting pieces 5 according to the specific structure of the prefabricated sandwich wallboard, and reserving corresponding holes in advance on the heat preservation plate 2;
(2) erecting a template of the outer leaf concrete wallboard 1, laying transverse and longitudinal reinforcing meshes of the outer leaf concrete wallboard, and positioning and fixing firmly to form a transverse and longitudinal reinforcing mesh framework 6; firmly fixing the metal connecting piece 4 on the transverse and longitudinal steel bar net framework 6, ensuring the minimum protective layer thickness, and pouring the outer leaf concrete wallboard 1;
(3) after the outer page concrete wallboard is poured and before concrete is solidified, laying the heat insulation board 2 with each connecting piece position hole reserved in advance, and then installing the non-metal connecting piece 5;
(4) on one side of the back of the heat insulation plate 2, an inner leaf concrete wallboard 3 template is erected and a transverse reinforcing mesh and a longitudinal reinforcing mesh are bound in the template; and then fixing the metal connecting piece on a reinforcing mesh of the inner leaf concrete wallboard 3 or directly anchoring the metal connecting piece in the concrete of the inner leaf concrete wallboard, finally pouring the inner leaf concrete wallboard 3, and maintaining and removing the form.
The utility model provides a heat preservation connection structure of prefabricated sandwich wallboard, the tensile strength of full play metal connecting piece bears the vertical load effect of outer page concrete wallboard, and the horizontal anti-drawing force of non-metal connecting piece is brought into full play simultaneously, bears outer page concrete wallboard horizontal load effect, can guarantee that the prefabricated sandwich wallboard that heated board thickness is more than 100mm is in the use, and the connection of outer page concrete wallboard, heated board and inner page concrete wallboard is firm; the use of nonmetal connection, greatly reduced the use quantity of metal connecting piece, the energy-conservation nature of wallboard is guaranteed to the heat conductivity of effectual reduction connecting piece.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the invention being defined in the appended claims and their equivalents.
Claims (8)
1. A heat-insulating connection structure of a prefabricated sandwich wallboard comprises an outer-leaf concrete wallboard, a heat-insulating plate and an inner-leaf concrete wallboard, wherein a transverse and longitudinal steel bar mesh framework is arranged in the outer-leaf concrete wallboard; the heat-preservation connecting structure is characterized by comprising a plurality of metal connecting pieces and nonmetal connecting pieces;
the nonmetal connecting pieces are uniformly distributed among the outer leaf concrete wallboard, the heat-insulating board and the inner leaf concrete wallboard according to the horizontal drawing force requirement of the prefabricated sandwich wallboard, and each nonmetal connecting piece consists of an outer leaf concrete wallboard anchoring end, a heat-insulating board connecting sleeve and an inner leaf concrete wallboard anchoring end;
a plurality of the metal connecting piece is laid according to the vertical load requirement of prefabricated sandwich wallboard between the non-metal connecting piece, equally divide and do not be for by oblique pull rod, horizontal compression bar and anchor end integrated into one piece's triangle-shaped or trapezium structure, pull rod and horizontal compression bar's common end and the violently indulge reinforcing bar net skeleton fixed connection in outer page or leaf concrete wallboard to one side, the anchor end anchor is in interior page or leaf concrete wallboard.
2. A heat-insulating connecting structure as claimed in claim 1, wherein in each metal connecting member, an included angle between the diagonal tension bar and the horizontal tension bar is 60-75 °.
3. A heat-insulating connecting structure as claimed in claim 1 or 2, wherein the metal connecting member is a stainless steel connecting member having a circular cross section and a diameter of 8 to 20 mm; the metal connecting piece is in an opening form at the anchoring end, the anchoring end penetrates through the heat insulation board and then is anchored in the inner leaf concrete wallboard in a straight anchor or bent anchor form according to the thickness of the inner leaf concrete wallboard, and the length of the vertical anchoring section of the anchoring end is larger than or equal to 15 times of the diameter of the metal connecting piece during bending anchoring.
4. A thermal insulating connecting structure as claimed in claim 1 or 2, wherein there are 2-4 metal connecting members and the metal connecting members are arranged near the upper part of the prefabricated sandwich wall panel.
5. A thermal insulating connecting structure as claimed in claim 1, wherein each of said non-metallic connecting members is an FRP connecting member in a bar-like structure.
6. A heat-insulating connecting structure as claimed in claim 1 or 5, wherein each non-metallic connecting member is mainly composed of a cylindrical central long rod with a plurality of axial convex ribs and a positioning envelope sleeved on the periphery of the long rod, and wedge-shaped grooves are respectively formed at two ends of the central long rod; the positioning envelope is used as the connecting sleeve of the heat-insulating plate, and the length of the positioning envelope is set according to the thickness of the heat-insulating plate; the two ends of the column-type central long rod protruding out of the positioning envelope are respectively used as the anchoring end of the outer leaf concrete wallboard and the anchoring end of the inner leaf concrete wallboard.
7. A thermal insulation connecting structure as claimed in claim 1 or 5, wherein each of said non-metallic connecting members has a length of said outer leaf concrete wall anchoring end of not less than 3cm and a distance from said end portion to an outer side of said outer leaf concrete wall of not less than a minimum protective layer thickness; the length of the anchoring end of the inner leaf concrete wallboard is not less than 50mm, and the distance from the end part to the outer side of the inner leaf concrete wallboard is not less than the thickness of the minimum protective layer.
8. A heat-insulating connecting structure as claimed in claim 1, wherein the outer leaf concrete wall panel has a thickness of 50 to 80mm, the inner leaf concrete wall panel is a reinforced concrete wall panel having a thickness of more than 100mm and a strength of not less than C30, and the heat-insulating panel has a thickness of 100 to 250 mm.
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| CN201920581383.4U CN209958607U (en) | 2019-04-26 | 2019-04-26 | Heat preservation connection structure of prefabricated sandwich wallboard |
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| CN201920581383.4U CN209958607U (en) | 2019-04-26 | 2019-04-26 | Heat preservation connection structure of prefabricated sandwich wallboard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047515A (en) * | 2021-03-15 | 2021-06-29 | 享城科建(北京)科技发展有限公司 | Connecting structure of sandwich wallboard, sandwich wallboard and preparation method of sandwich wallboard |
| CN113235765A (en) * | 2021-05-19 | 2021-08-10 | 同圆设计集团股份有限公司 | Assembled outer wall capable of bearing external heavy load and method |
-
2019
- 2019-04-26 CN CN201920581383.4U patent/CN209958607U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047515A (en) * | 2021-03-15 | 2021-06-29 | 享城科建(北京)科技发展有限公司 | Connecting structure of sandwich wallboard, sandwich wallboard and preparation method of sandwich wallboard |
| CN113235765A (en) * | 2021-05-19 | 2021-08-10 | 同圆设计集团股份有限公司 | Assembled outer wall capable of bearing external heavy load and method |
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