CN211396091U - Stainless steel-fiber reinforced plastic composite connecting piece for sandwich heat-insulation wall - Google Patents
Stainless steel-fiber reinforced plastic composite connecting piece for sandwich heat-insulation wall Download PDFInfo
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- CN211396091U CN211396091U CN201922152890.9U CN201922152890U CN211396091U CN 211396091 U CN211396091 U CN 211396091U CN 201922152890 U CN201922152890 U CN 201922152890U CN 211396091 U CN211396091 U CN 211396091U
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Abstract
The utility model relates to a stainless steel-fiber reinforced plastic composite connecting piece for sandwich thermal insulation wall body for connect inside and outside leaf wall, the shape is like the recess form, mainly comprises stainless steel main part, plastic sheath and fiber reinforced plastic. The end part of the connecting piece is provided with a groove cap to increase the anti-pulling force between the connecting piece and the concrete of the inner leaf wall, and in addition, the surface of the stainless steel fine thread on the upper part of the connecting piece is wound with fiber reinforced plastics (glass fiber and carbon fiber) to reduce the direct contact between the stainless steel and the concrete, thereby reducing the heat conduction and achieving the heat insulation effect of the wall body. The plastic sleeve is positioned in the middle of the connecting piece, and a plastic positioning ring is arranged at the junction of the upper part and the middle part, so that the sliding between the connecting piece and the heat insulation layer can be prevented. The stainless steel coarse screw thread on the lower part of the connecting piece can increase the cohesive force with the concrete of the outer leaf wall. The utility model discloses a connecting piece has that intensity is high, coefficient of thermal conductivity is low, durability (corrosion resistance) is good, fire resistance is excellent, the construction is convenient, but standardized production.
Description
Technical Field
The utility model relates to a stainless steel-fiber reinforced plastic composite connection spare for precast concrete with filling thermal insulation wall belongs to structural engineering technical field.
Background
Research has shown that the heat transfer and consumption of the building outer envelope structure account for more than 80% of the total building energy consumption. In order to reduce building energy consumption and realize the aim of building energy conservation, the building peripheral protective wall body mainly adopts three types of external heat preservation, internal heat preservation and sandwich heat preservation. The internal heat insulation occupies an indoor use area, is less applied in engineering, and the external heat insulation is widely applied to various buildings, but in recent years, a great amount of casualties and economic loss are caused due to frequent occurrence of fire accidents of external heat insulation of an external wall, and the external heat insulation is gradually replaced by sandwich heat insulation. With the development of domestic building industrialization, a sandwich heat preservation technology is combined with a prefabricated wall body to form a prefabricated sandwich heat preservation wall, the wall body is applied to residential buildings and public buildings, and the prefabricated sandwich heat preservation wall is formed in one step in a factory and assembled on a construction site. Compared with the traditional heat-insulating wall, the precast concrete inorganic heat-insulating sandwich outer wall body has the following characteristics: the flame retardant property is good. Compared with external wall external heat insulation, the heat insulation material of the prefabricated sandwich heat insulation wall is positioned inside the wall body, the heat insulation layer is isolated from the external air, the direct action of flame on the heat insulation layer of the wall body can be avoided when a fire disaster occurs in the building, and the spreading of the fire disaster is effectively prevented. Therefore, the sandwich heat-insulating wall has better fire resistance. Secondly, the industrial production and assembly are realized, and the field wet operation is less. The heat insulation material is positioned in the sandwich wall, so that the influence of freeze thawing circulation on the heat insulation material is avoided, the heat insulation of the wall body and the service life of the building structure are prolonged, and the service life of the heat insulation material is prolonged. The connecting piece has low heat conductivity coefficient, and can reduce the heat bridge effect and the heat transfer coefficient of the wall body. At present, the wall body is applied to industrial residential projects in Shanghai and other places, and has wide application prospect.
The prefabricated concrete sandwich heat-insulating wall is formed from internal and external leaf concrete walls, sandwich heat-insulating layer (polystyrene plate (EPS), extruded polystyrene plate (XPS) and others) and connecting piece. The inner leaf wall and the outer leaf wall are connected into a whole by the connecting piece, one end of the connecting piece (or the lower part of the connecting piece) is embedded and fixed on the outer leaf wall (the lower leaf wall), the middle part of the connecting piece penetrates through the heat insulation board, and the other end of the connecting piece (or the upper part of the connecting piece) is embedded and fixed on the inner leaf wall (the upper leaf wall). The connecting piece is an important component for ensuring the structure safety, the inner leaf wall and the outer leaf wall of the precast concrete sandwich heat-insulation wall body are connected through the connecting piece, the inner leaf wall and the outer leaf wall are stressed cooperatively through the connecting piece, the connecting piece is mainly used for bearing the shearing force and the extraction force between the concrete wall body and the heat-insulation layer, and the connecting piece is a key factor for ensuring the integrity of the wall body. Meanwhile, in order to reduce the heat transfer coefficient of the precast concrete sandwich thermal insulation wall and reduce the heat bridge effect, the precast concrete sandwich thermal insulation wall also has better fire resistance, corrosion resistance and low heat transfer performance.
At present, the connecting piece applied to the precast concrete sandwich thermal insulation wall at home and abroad mainly comprises a metal material and Fiber Reinforced Plastics (FRP), and comprises: steel bar connection spare, stainless steel connecting piece and Fibre Reinforced Plastic (FRP) connecting piece etc. all there are a great deal of problems in above connecting piece: although the steel bar connecting piece has the advantages of high strength, low price, easy processing and the like, the heat conductivity coefficient of the material is large, the heat bridge effect exists, the heat insulation effect of the wall body is reduced (the heat transfer coefficient of the wall body is reduced), the corrosion resistance of the steel bar is poor, and the service life of the component is shortened. The stainless steel connecting piece has high strength and good corrosion resistance, the heat conductivity coefficient of the material is lower than that of the common steel bar, but the cost is high. Although Fiber Reinforced Plastic (FRP) connectors have the advantages of high tensile strength, strong corrosion resistance, low thermal conductivity (lower than that of metals such as stainless steel) and the like, the FRP connectors have low shear strength and belong to brittle materials. Particularly, the fire resistance of the Fiber Reinforced Plastic (FRP) connecting piece is poor, the Fiber Reinforced Plastic (FRP) comprises Carbon Fiber Reinforced Plastic (CFRP), Glass Fiber Reinforced Plastic (GFRP), aramid fiber plastic (BFRP) and the like, the above fiber reinforced plastics are all composed of resin and fiber, the resin reaches the glass transition temperature at 90-120 ℃, the resin is softened, the adhesive force between the Fiber Reinforced Plastic (FRP) connecting piece and concrete is degraded, the fire resistance safety of the wall body is affected, the outer leaf wall and the inner leaf wall cannot be stressed cooperatively, and even the outer leaf wall and the connecting piece fall off, so that the outer leaf wall falls off. In recent years, connectors with fiber reinforced plastics wrapped outside reinforcing steel bars are also developed in China, and due to the fact that the outer leaf walls are thin, the temperature in the outer leaf walls is high under the action of fire, and the fiber reinforced plastics are in the outer leaf walls.
Based on the reasons, the heat-insulation wall connecting piece has the advantages of high strength, low heat conductivity coefficient, good durability (corrosion resistance), excellent fire resistance and convenience in construction. The utility model discloses utilize stainless steel and fiber reinforced plastic's material characteristics separately, combine it organically.
Disclosure of Invention
The utility model aims at providing a stainless steel-fibre reinforced plastic composite connection spare that is used for precast concrete with filling thermal insulation wall that intensity is high, coefficient of thermal conductivity is low, durability (corrosion resistance) is good, fire resistance is excellent, construction is convenient.
The utility model provides a stainless steel-fibre reinforced plastics composite connection spare for sandwich thermal insulation wall body, sandwich thermal insulation wall body comprises outer leaf wall (lower leaf wall), sandwich heat preservation and interior leaf wall (upper leaf wall) for precast concrete sandwich thermal insulation wall, and stainless steel-fibre reinforced plastics composite connection spare links into an integrated entity outer leaf wall, sandwich heat preservation and interior leaf wall, stainless steel-fibre reinforced plastics composite connection spare comprises the connecting piece part 21 that is located the upper leaf wall, the connecting piece part 22 that is located the heat preservation and the connecting piece part 23 that is located the lower leaf wall, wherein:
the connecting part 21 positioned on the upper leaf wall comprises a groove cap 211 and a first stainless steel rod 212, the groove cap 211 is connected with the first stainless steel rod 212, the connecting part 22 positioned on the heat-insulating layer comprises a second stainless steel rod 221, the connecting part 23 positioned on the lower leaf wall comprises a third stainless steel rod 231 and a connecting part end 232, the third stainless steel rod 231 is connected with the connecting part end 232, two ends of the second stainless steel rod 221 are respectively connected with one ends of the first stainless steel rod 212 and the third stainless steel rod 231, and the first stainless steel rod 212, the second stainless steel rod 221 and the third stainless steel rod 231 are connected into a whole to form a rod body;
the outer surface of the first stainless steel rod 212 of the connecting piece part 21 of the upper leaf wall is provided with fine threads 213, and the outer surface of the first stainless steel rod 212 is transversely wound with a fiber reinforced plastic layer 214; the protective sleeve is arranged outside the second stainless steel rod 221 and consists of a plastic positioning ring 222, a plastic sleeve 223 and plastic threads 224, the plastic positioning ring 222 is located at one end and connected with the plastic sleeve 223, the plastic threads 224 are arranged on the outer surface of the plastic sleeve 223, and the plastic sleeve 223 is wrapped outside the second stainless steel rod 221.
The utility model discloses in, pole body cross-section is any one of circular, square or rectangle etc. and the edges and corners in cross-section are convex, and the cross-sectional diameter is 6 ~ 10mm, and the material is the stainless steel, once casts and takes shape.
The utility model discloses in, groove cap 211 is located pole body top for connect prefabricated sandwich thermal insulation wall's last leaf wall (interior leaf wall), the similar cell type of shape, thickness are 3 ~ 5mm, and the diameter is 12 ~ 15mm, and cell type cap both sides pincerlike bellying is 3 ~ 5 mm.
The utility model discloses in, first stainless steel pole 212 is located pole body upper portion, between groove cap 211 and the plastics holding ring 222, and first stainless steel pole 212 is arbitrary in cylinder or the cuboid, and the cross section is circular or square, and surface distribution has fine screw thread 213.
The utility model discloses in, fiber reinforced plastic layer 214 is the fiber reinforced plastic silk at first stainless steel pole 212 surface winding impregnated resin, and thickness is 3 ~ 10 mm.
In the utility model, the fiber reinforced plastic filament is any one of glass fiber or carbon fiber and the like.
The utility model discloses in, second stainless steel pole 221 and third stainless steel pole 231 are any kind in cylinder or the cuboid, and the cross section is any kind in circular or the square, and its cylinder diameter is the same with first stainless steel pole 221, and its cross section square side length is the same with first stainless steel pole 221.
The utility model discloses in, plastics holding ring 222 is located the juncture on the lower part of the connecting piece part of inner leaf wall and the connecting piece part upper portion of sandwich heat preservation, and is ring shape, and the ring diameter is 12 ~ 30mm, and is 2 ~ 4mm thick, acts on reinforced concrete inner leaf wall and sandwich heat preservation interface, can prevent stainless steel-fibre reinforced plastic composite connection spare gliding, mainly used stainless steel-fibre reinforced plastic composite connection spare and the location between the sandwich heat preservation, thereby guarantee the stainless steel-fibre reinforced plastic composite connection spare anchor length in upper leaf wall, the lower leaf wall.
The utility model discloses in, plastic sheath (also known as plastic protective sheath or plastics obturator) 223 material is engineering plastics or bulk molding compound (the internal unsaturated polyester bulk molding compound of often called), is infundibulate or coniform, and the last port diameter size is in the port diameter down, and the slope is 10 degrees ~ 40 degrees, can increase wall body connecting piece's stability, makes the difficult emergence side direction of stainless steel-fibre reinforced plastics composite connection spare empty. In addition, the outer surface of the plastic sleeve is provided with a plastic thread 224 which is used for increasing the friction force between the sandwich heat-insulation plate and the stainless steel-fiber reinforced plastic composite connecting piece and preventing the stainless steel-fiber reinforced plastic composite connecting piece and the sandwich heat-insulation layer from sliding.
The utility model discloses in, connecting piece end 233 material is the stainless steel, connecting piece end 233, the cross-section slightly contracts, is the round platform body, is favorable to inserting stainless steel-fibre reinforced plastics composite connection spare in sandwich heat preservation and the reinforced concrete underleaf wall (or the outer leaf wall), and length is 3 ~ 6 mm.
The utility model discloses in, first stainless steel pole 212 is located stainless steel-fiber reinforced plastics composite connection spare's upper portion, between cell cap and plastics holding ring, is cylinder (or cuboid etc.), and the cross-section is circular (square), and surface distribution has fine screw thread 213 for increase the adhesion force (mechanical interlock power, frictional force) between fiber reinforced plastics (glass fiber) and the stainless steel matrix.
The utility model discloses in, third stainless steel pole 231 is one of the main component parts of the pole body (base member) of connecting piece, and the surface has coarse screw thread (232) (or nick, floating point etc.), can increase adhesion strength (mechanical bite power, frictional force) between third stainless steel pole 231 and the outer leaf wall (or lower leaf wall) concrete. The part of the fiber reinforced plastic which is not wound is mainly considered to be positioned in the outer leaf wall (or the lower leaf wall), the outer leaf wall (or the lower leaf wall) is a non-bearing wall and is thinner, and the thickness of the concrete protection layer of the connecting piece on the outer leaf wall (or the lower leaf wall) is also smaller. When the prefabricated sandwich heat-insulation wall is on fire and the outer leaf wall is in a fire-facing surface, under the action of fire and high temperature, the temperature in the outer leaf wall (lower leaf wall) is far higher than that of the inner leaf wall, the temperature of the stainless steel-fiber reinforced plastic composite connecting piece in the outer leaf wall is rapidly increased, the glass transition temperature of resin in the FRP material is 90-120 ℃, and when the glass transition temperature is reached, the bonding property with concrete is greatly reduced, so for the reasons, no fiber reinforced plastic protective layer is arranged on the surface of the connecting piece in the outer leaf wall.
The utility model discloses in, fiber reinforced plastic layer 214 is at the surface winding fiber reinforced plastic silk (FRP, glass fiber or carbon fiber) of the first stainless steel pole 212 on stainless steel-fiber reinforced plastic composite connection spare upper portion, and fiber reinforced plastic has characteristics of high strength (tensile strength is high), light (the unit weight is little), thermal-insulated good (coefficient of thermal conductivity is low), and generally only corroded by dense alkali, hydrofluoric acid and dense phosphoric acid. The fiber reinforced plastic wire winding mode adopts a continuous fiber winding process, the fiber reinforced plastic wire is wound on the surface of a stainless steel connecting piece substrate, and then resin is impregnated to form a fiber reinforced plastic protective layer. In addition, for the precast concrete sandwich thermal insulation shear wall, the reinforced concrete inner leaf wall (upper leaf wall) is generally a bearing wall, the wall thickness is larger, the outer leaf wall (lower leaf wall) is a non-bearing wall, only plays a role in protecting a thermal insulation layer, and the wall thickness is smaller. The fire resistance performance test is carried out on the precast concrete sandwich thermal insulation wall body adopting the fiber reinforced plastic connecting piece according to the ISO 834 temperature rise curve, and the result shows that: in the range of 30mm on the fire-facing side, the temperature gradient is large, the inner blade wall body is large in thickness and good in fire resistance, and the outer blade wall body is small in thickness and large in temperature gradient, so that the fiber reinforced plastic connecting piece can generate a deterioration effect after resin reaches the vitrification temperature, and the bonding force between the fiber reinforced plastic and the wall is greatly reduced. The utility model discloses in arranging the interior lobe wall in with the fiber reinforced plastic protective layer of connecting piece, the connecting piece has great concrete protection layer thickness, consequently, this stainless steel-fiber reinforced plastic composite connection spare's fire resistance can be higher than ordinary fiber reinforced plastic connecting piece.
The beneficial effects of the utility model reside in that:
| (1) the connecting piece of the utility model has the advantages of light weight, high strength, good heat insulation performance, good fire resistance performance and anchoring performance Good durability, can improve the heat preservation and insulation effect of the sandwich heat preservation shear wall and increase the use of the wall body The service life is prolonged, and the heat preservation and the same service life of the structure are realized. |
| (2) The utility model discloses a shaping is once pour to connecting piece stainless steel main part, and the construction is convenient, but standardization metaplasia The plastic protective sleeve is arranged outside the device, so that the device is convenient to install, good in performance, low in cost and wide in application prospect. |
Drawings
FIG. 1 is a schematic diagram of a precast concrete sandwich thermal insulation wall construction.
Fig. 2 is an elevational view of a stainless steel-fiber reinforced plastic composite connector.
Fig. 3 is an elevation view of a stainless steel-fiber reinforced plastic composite connector shaft (substrate).
Fig. 4 is a sectional view of the stainless steel-fiber reinforced plastic composite connector.
Fig. 5 is a top view of a stainless steel-fiber reinforced plastic composite connector.
Fig. 6 is a socket cap portion of a stainless steel-fiber reinforced plastic composite connector.
Fig. 7 is a sectional view of a stainless steel-fiber reinforced plastic composite connector a-a.
Fig. 8 is a sectional view of a stainless steel-fiber reinforced plastic composite connector B-B.
Fig. 9 is a cross-sectional view of a stainless steel-fiber reinforced plastic composite connector C-C.
Reference numbers in the figures: 1, prefabricating a concrete sandwich heat-insulating wall; 11-reinforced concrete outer leaf wall; 111-horizontal distribution ribs of the reinforced concrete outer leaf wall; 112-longitudinal distribution ribs of the reinforced concrete outer leaf wall; 12-sandwich insulating layer; 13-reinforced concrete inner leaf wall; 131-horizontal distribution ribs of the reinforced concrete inner leaf wall; 132-longitudinal distribution ribs of the reinforced concrete inner leaf wall; 2-stainless steel-fiber reinforced plastic composite connecting piece; 21-connector parts located on the inner leaf wall (upper leaf wall); 211-trough cap; 212 — a first stainless steel rod; 213-fine thread; 214-a fiber reinforced plastic layer; 22-a connector part located on the insulating layer; 221-a second stainless steel rod; 222-a plastic positioning ring; 223-plastic sleeve; 224-plastic threads; 23-connector parts located on the outer leaf walls (lower leaf walls); 231 — third stainless steel rod; 232-coarse thread; 233 — connector end.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Example 1:
the precast concrete sandwich heat-insulation outer wall 1 is composed of a reinforced concrete outer leaf wall 11, a reinforced concrete inner leaf wall 13 and a sandwich heat-insulation layer 12, wherein the reinforced concrete outer leaf wall 11, the reinforced concrete inner leaf wall 13 and the sandwich heat-insulation layer 12 are connected through a stainless steel-fiber reinforced plastic composite connecting piece 2; the reinforced concrete outer leaf wall 11 comprises horizontal distribution ribs 111 of the reinforced concrete outer leaf wall and longitudinal distribution ribs 112 of the reinforced concrete outer leaf wall, the reinforced concrete inner leaf wall 13 comprises horizontal distribution ribs 131 of the reinforced concrete inner leaf wall and longitudinal distribution ribs 132 of the reinforced concrete inner leaf wall, and the sandwiched heat-insulating layer 12 adopts organic heat-insulating boards (such as extruded polystyrene boards or polystyrene boards) or inorganic heat-insulating boards (such as rock wool) and is specifically shown in fig. 1-8.
One end of the stainless steel-fiber reinforced plastic composite connecting piece is a groove cap, the other end of the stainless steel-fiber reinforced plastic composite connecting piece is straight, the middle part of the connecting piece is funnel-shaped, and the gradient of the connecting piece is 10-40 degrees. The shaft (base body) of the stainless steel-fiber reinforced plastic composite connector comprises: the first stainless steel rod 212, the second stainless steel rod 221 and the third stainless steel rod 231 are formed in a one-step casting mode, thick threads 232 are arranged outside the third stainless steel rod 231, the cross section of the third stainless steel rod is circular, square or rectangular, the edge angle of the cross section is circular arc-shaped, the diameter of the cross section is 6-10 mm, and the third stainless steel rod is made of stainless steel.
The fiber reinforced plastic layer 214 is formed by winding fiber reinforced plastic (FRP, glass fiber or carbon fiber) on the surface of the first stainless steel rod 212 at the upper part of the stainless steel-fiber reinforced plastic composite connector. The fiber reinforced plastic wire winding mode adopts a continuous fiber winding process, the fiber reinforced plastic wire is spirally bundled by continuous fibers on the surface of the stainless steel-fiber reinforced plastic composite connecting piece matrix transversely, so that the stainless steel-fiber reinforced plastic composite connecting piece is uniformly wrapped in the longitudinal direction, then resin is impregnated, and the fine threads 213 on the surface of the stainless steel-fiber reinforced plastic composite connecting piece can increase the binding force (mechanical gripping force and friction force) between the fiber reinforced plastic layer 214 and the first stainless steel rod 212, thereby forming a continuous fiber reinforced plastic protective layer. The fiber reinforced plastic layer 214 can improve the heat insulation between the stainless steel-fiber reinforced plastic composite connecting piece and the precast concrete sandwich heat-insulation outer wall, reduce the thermal bridge effect of the first stainless steel rod 212, and reduce the heat transfer coefficient of the precast concrete sandwich heat-insulation outer wall, thereby improving the heat insulation performance of the precast concrete sandwich heat-insulation outer wall.
The connecting piece part 22 positioned on the inner leaf wall penetrates through the sandwich insulation layer 12 of the precast concrete sandwich insulation outer wall and comprises: a second stainless steel rod 221, a plastic retaining ring 222, a plastic sleeve 223, and plastic threads 224. Wherein, the second stainless steel rod 221 is a stainless steel rod body (base body) positioned in the middle of the stainless steel-fiber reinforced plastic composite connecting piece, and the outer surface of the second stainless steel rod body is wrapped with a plastic sleeve 223. The plastic positioning ring 222 is arranged between the reinforced concrete inner leaf wall 13 and the sandwich heat-insulating layer 12, is annular, has the diameter of 12-30 mm and the thickness of 2-4 mm, can prevent the stainless steel-fiber reinforced plastic composite connecting piece from sliding downwards, and is mainly used for positioning the stainless steel-fiber reinforced plastic composite connecting piece and the sandwich heat-insulating layer 12, so that the anchoring length of the stainless steel-fiber reinforced plastic composite connecting piece in the upper leaf wall and the lower leaf wall is ensured.
The plastic sleeve 223 is an engineering plastic protective sleeve (also called a plastic sleeve ring or a plastic filler), is made of engineering plastics or bulk molding compounds (commonly called unsaturated polyester bulk molding compounds in China), is in a funnel shape (a conical shape), has a gradient of 10-40 degrees, can increase the stability of the wall connecting piece, and ensures that the stainless steel-fiber reinforced plastic composite connecting piece is not easy to laterally topple. In addition, the plastic thread 224 is arranged on the outer surface of the plastic sleeve 223, and is used for increasing the friction force between the precast concrete sandwich thermal insulation outer wall 1 and the stainless steel-fiber reinforced plastic composite connecting piece, and preventing the stainless steel-fiber reinforced plastic composite connecting piece from sliding with the precast concrete sandwich thermal insulation wall 1.
The inner leaf wall of the precast concrete sandwich heat-insulating wall is generally a bearing wall, the outer leaf wall is a non-bearing wall, and the pouring adopts horizontal placement pouring. In the process of manufacturing the precast concrete sandwich heat-insulating wall, a steel template is firstly used for supporting and brushing oil, then a reinforcing mesh reinforcement of an outer leaf wall (a lower leaf wall) is placed in the precast concrete sandwich heat-insulating wall, concrete is poured, then a sandwich heat-insulating layer with a hole formed in advance is quickly installed on the concrete of the outer leaf wall (the lower leaf wall) before the concrete is initially set, a stainless steel-fiber reinforced plastic composite connecting piece is inserted into the outer leaf wall (the lower leaf wall) through the hole of the sandwich heat-insulating layer in a straight-inserting mode, a plastic positioning ring is tightly attached to the outer surface of the sandwich heat-insulating layer 12, the stainless steel-fiber reinforced plastic composite connecting piece is prevented from sliding downwards, the anchoring length of a connecting piece part in the upper leaf wall and the lower leaf wall is ensured, finally a horizontal distribution rib 111 and a longitudinal distribution rib 112 of the inner leaf wall (the upper leaf wall) are placed, the concrete is poured, a groove cap 221 of the stainless steel-fiber reinforced plastic composite, the anchoring performance of the stainless steel-fiber reinforced plastic composite connecting piece in concrete can be improved, and after the concrete is maintained to reach the designed strength of the concrete, the manufacturing of the precast concrete sandwich thermal insulation external wall panel is finished.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (10)
1. The utility model provides a stainless steel-fibre reinforced plastics composite connection spare for sandwich thermal insulation wall, sandwich thermal insulation wall is precast concrete sandwich thermal insulation wall, comprises lower leaf wall, sandwich heat preservation and upper leaf wall, and stainless steel-fibre reinforced plastics composite connection spare links into an integrated entity lower leaf wall, sandwich heat preservation and upper leaf wall which characterized in that: the stainless steel-fiber reinforced plastic composite connecting piece consists of a connecting piece part (21) positioned on the upper leaf wall, a connecting piece part (22) positioned on the heat-insulating layer and a connecting piece part (23) positioned on the lower leaf wall, wherein:
the connecting piece part (21) positioned on the upper leaf wall comprises a groove cap (211) and a first stainless steel rod (212), the groove cap (211) is connected with the first stainless steel rod (212), the connecting piece part (22) positioned on the heat-insulating layer comprises a second stainless steel rod (221), the connecting piece part (23) positioned on the lower leaf wall comprises a third stainless steel rod (231) and a connecting piece end (232), the third stainless steel rod (231) is connected with the connecting piece end (232), two ends of the second stainless steel rod (221) are respectively connected with one ends of the first stainless steel rod (212) and the third stainless steel rod (231), and the first stainless steel rod (212), the second stainless steel rod (221) and the third stainless steel rod (231) are connected into a whole to form a rod body;
fine threads (213) are carved on the outer surface of a first stainless steel rod (212) of the connecting piece part (21) of the upper leaf wall, and a fiber reinforced plastic layer (214) is transversely wound on the outer surface of the first stainless steel rod (212); the second stainless steel pole (221) is equipped with the protective sheath outward, the protective sheath comprises plastics holding ring (222), plastic sheath (223) and plastics screw thread (224), and plastics holding ring (222) are located one end, connect plastic sheath (223) under it, and plastics cover (223) surface is carved with plastics screw thread (224), plastics cover (223) parcel is outside second stainless steel pole (221).
2. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the cross section of the rod body is any one of a circle, a square or a rectangle, the edge angle of the cross section is a circular arc, the diameter of the cross section is 6-10 mm, the material is stainless steel, and the rod body is formed by one-time casting.
3. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the groove cap (211) is located at the top of the rod body and used for being connected with an upper leaf wall of the prefabricated sandwich thermal insulation wall body, the shape of the groove cap is similar to that of a groove, the thickness of the groove cap is 3-5 mm, the diameter of the groove cap is 12-15 mm, and the pincerlike convex parts on the two sides of the groove cap are 3-5 mm.
4. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the first stainless steel rod (212) is positioned at the upper part of the rod body, between the groove cap (211) and the plastic positioning ring (222), the first stainless steel rod (212) is any one of a cylinder or a cuboid, the cross section is circular or square, and fine threads (213) are distributed on the surface.
5. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the fiber reinforced plastic layer (214) is formed by winding resin-impregnated fiber reinforced plastic wires on the surface of the first stainless steel rod (212), and the thickness of the fiber reinforced plastic wire is 3-10 mm.
6. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 5, wherein: the fiber reinforced plastic wire is any one of glass fiber or carbon fiber.
7. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the second stainless steel rod (221) and the third stainless steel rod (231) are both any one of cylinders or cuboids, the cross section is any one of a circle or a square, the diameter of the cylinder is the same as that of the first stainless steel rod (212), and the side length of the square of the cross section is the same as that of the first stainless steel rod (212).
8. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the plastic positioning ring (222) is located at the junction of the lower part of the connecting piece part of the inner leaf wall and the upper part of the connecting piece part of the sandwich heat-insulating layer, is in a ring shape, has the diameter of 12-30 mm and the thickness of 2-4 mm, and acts on the interface of the reinforced concrete inner leaf wall and the sandwich heat-insulating layer.
9. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the plastic sleeve (223) is made of engineering plastics or bulk molding compounds and is funnel-shaped or conical, the diameter of the upper port is smaller than that of the lower port, and the gradient is 10-40 degrees.
10. The stainless steel-fiber reinforced plastic composite connecting piece for the sandwich thermal insulation wall body according to claim 1, wherein: the connecting piece end (232) is made of stainless steel, the cross section of the connecting piece end (232) is slightly contracted to form a circular truncated cone, the stainless steel-fiber reinforced plastic composite connecting piece can be inserted into the sandwich heat-insulating layer and the reinforced concrete lower leaf wall conveniently, and the length of the connecting piece end (232) is 3-6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922152890.9U CN211396091U (en) | 2019-12-05 | 2019-12-05 | Stainless steel-fiber reinforced plastic composite connecting piece for sandwich heat-insulation wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922152890.9U CN211396091U (en) | 2019-12-05 | 2019-12-05 | Stainless steel-fiber reinforced plastic composite connecting piece for sandwich heat-insulation wall |
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| Publication Number | Publication Date |
|---|---|
| CN211396091U true CN211396091U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922152890.9U Active CN211396091U (en) | 2019-12-05 | 2019-12-05 | Stainless steel-fiber reinforced plastic composite connecting piece for sandwich heat-insulation wall |
Country Status (1)
| Country | Link |
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| CN (1) | CN211396091U (en) |
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2019
- 2019-12-05 CN CN201922152890.9U patent/CN211396091U/en active Active
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