CN209705444U - Double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline - Google Patents

Abstract

The utility model discloses a kind of high-strength composite pipes, especially double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline, belong to water supply and drainage plumbing installation technical field；The high-strength composite pipe includes the glass reinforced plastic inner tube as liner layer, and the glass reinforced plastic outer tube as outer wall, it is provided with concrete sandwich layer between glass reinforced plastic inner tube and glass reinforced plastic outer tube, is additionally provided with connector between the glass reinforced plastic inner tube and concrete sandwich layer so that glass reinforced plastic inner tube unifies with sandwich concrete；The double-walled internal-rib fiberglass sandwich concrete high-strength degree multiple tube of the utility model is provided simultaneously with that the superior function of glass reinforced plastic pipe and pipe of concrete and lighter in weight, cost is relatively low, by the design of connector, two kinds of material tights of glass reinforced plastic and concrete can be made to combine integral, common stress.

Description

High-strength composite pipe with double-wall inner rib FRP sandwich concrete

technical field

The utility model relates to a high-strength composite pipe, in particular to a high-strength composite pipe with double-wall inner rib glass fiber reinforced plastic sandwich concrete, belonging to the technical field of water supply and drainage pipe devices.

Background technique

FRP pipes mainly use glass fiber and its products as reinforcing materials, use unsaturated polyester resin and epoxy resin with high molecular weight as basic materials, and use inorganic non-metallic particle materials such as quartz sand and calcium carbonate as fillers as main raw materials. , its main advantages are light weight and high strength, corrosion resistance, smooth inner surface, low energy consumption for transportation, long service life, strong ability to seal water at the interface, and convenient installation and transportation. However, because it is a flexible pipe, its stiffness is low, the pipe deformation is large, and the pipe is easily damaged by external force, so it has high requirements for construction technology and application environment conditions.

Concrete pipe, this kind of traditional pipe material, was once widely used in water supply and drainage pipe network systems due to its good bearing capacity, strong resistance to external damage and deformation, and low manufacturing cost. Poor, non-corrosion-resistant pipes have a short service life, heavy pipes are inconvenient to install and transport, and are gradually being eliminated; however, in recent years, there is an increasing demand for large-diameter pipes with high bearing capacity in water conservancy and municipal engineering. Plastic pipes, including glass fiber reinforced plastic pipes, cannot meet the requirements for high load-bearing capacity. (It is possible to increase the thickness of the structural wall through special processes to achieve high load-bearing capacity requirements, but the cost of the pipeline will increase significantly, which is unacceptable.) Instead, large pipes have to be used. caliber concrete pipe.

In recent years, a new type of pipe that combines the superior performance of concrete pipes and glass steel pipes - FRP-lined concrete composite pipes has been gradually popularized and applied. Poor water quality and other problems, but failed to solve the problems of outer wall corrosion and bulky pipes. Due to production process problems, when pouring the outer concrete of the composite pipe, the pipe outer formwork must be installed first, and the pipe outer formwork must be removed after the concrete is poured. Each specification is Several sets of external molds are required, which leads to large mold investment, low production efficiency, and high labor intensity; in addition, considering factors such as mold cost, pipe weight, and demoulding time, the length of the composite pipe is generally set within 3 meters. The pipe length is the lowest among the water supply and drainage pipes widely used at present. In theory, the longer the pipe in the pipe system, the fewer the joint points, the higher the efficiency of pipe installation, and the lower the probability of pipe leakage. Therefore, comprehensive consideration of pipe transportation and pipe weight and other factors, the length of the pipe should be as large as possible. Generally, the length of the water supply and drainage pipe is more than 6 meters; obviously, the length of the composite pipe of 3 meters is a shortcoming.

Contents of the invention

The purpose of the invention of this utility model is to provide a high rigidity composite pipe with double-wall inner rib glass fiber reinforced plastic sandwich concrete in view of the above-mentioned existing problems, combined with the advantages and disadvantages of FRP-lined concrete composite pipe. All the advantages of composite pipes, but with lighter weight, better corrosion resistance of the outer wall, higher internal pressure, longer pipe length, higher installation efficiency, and lower production costs, while providing a simple, efficient, and reliable manufacturing Process and method.

The technical scheme that the utility model adopts is as follows:

The high-strength composite pipe with double-wall inner rib FRP sandwich concrete includes a FRP inner pipe as the inner lining layer and a FRP outer pipe as the outer wall. A concrete sandwich layer is arranged between the FRP inner pipe and the FRP outer pipe. The FRP inner pipe A connecting piece is also arranged between the pipe and the concrete sandwich layer to integrate the glass fiber reinforced plastic inner pipe with the concrete sandwich layer, and the glass fiber reinforced plastic inner pipe and the glass fiber reinforced plastic outer pipe are fused together at both ends of the pipe.

In the utility model, the high-strength composite pipeline uses the glass fiber reinforced plastic inner tube as the inner lining, and its smooth and corrosion-resistant characteristics ensure the service life and excellent hydraulic performance of the entire composite pipeline, and the protection of the glass outer tube can also effectively improve the performance of the pipeline. service life; at the same time, the overall high strength of the composite pipe is ensured by the bearing structure of the concrete sandwich layer and the FRP outer tube; the use of connectors makes the glass steel pipe and the concrete sandwich layer tightly integrated into one, and the joint force is used to realize the concrete sandwich layer The perfect combination of material and glass steel pipe material performance; due to the use of low-cost concrete materials, the wall thickness of the pipeline structure can be increased to enhance its bearing capacity, and the pipeline cost does not increase much.

Further, one end of the fusion of the FRP inner tube and the FRP outer tube is provided with a FRP socket, and the other end is provided with a FRP socket.

Further, the FRP inner tube and the FRP outer tube are fused together to form a pouring hole at the socket of the FRP pipe formed by merging together for pouring concrete, and the pouring hole is closed after the concrete is poured to form a concrete sandwich layer. This design method can improve production efficiency and ensure the overall performance of the overall pipeline.

In the high-strength composite pipe with double-wall inner rib glass fiber reinforced plastic sandwich concrete of the utility model, the connecting piece includes a plurality of "U"-shaped connecting parts, and the "U"-shaped connecting parts are arranged in an array along the axial direction and the circumferential direction of the pipe. This design method can ensure that the inner and outer glass steel pipes, the intermediate steel cage and the concrete layer are effectively and tightly connected while the pipe wall is evenly stressed.

Further, the bottom of the "U"-shaped connecting part is in contact with the outer side of the FRP inner tube, and the outer side of the FRP inner tube is provided with a first FRP annular rib belt, which passes through the concave groove of the "U"-shaped connecting part. The bottom of the groove is wound circularly, and the "U"-shaped connecting parts are bundled and fixed on the FRP inner tube, and integrated with it as a whole to bear the force together. In this design, different from the traditional design, this design uses the first FRP annular rib to bind and fix the "U"-shaped connecting parts. This method can not only effectively improve the rigidity of the FRP inner tube, but also ensure the "U"-shaped connection The component is embedded in the annular ribbed belt and is tightly connected with the FRP inner pipe; in addition, the first FRP steel pipe annular ribbed belt forms a boss on the outer wall of the FRP inner pipe, and the boss is finally embedded in the inner wall of the concrete sandwich layer, which can be more Effectively limit the axial relative displacement/sliding between the FRP inner tube and the concrete sandwich layer to ensure common and uniform force.

Further, at least a pair of through holes are provided on the upper side walls of the "U"-shaped connecting part for axially penetrating and fixing reinforcing steel bars.

Further, at least one layer of steel bars is arranged in the concrete sandwich layer, and the outer periphery of the reinforcement bars is helically wound with stirrups to bind them together; the reinforcement bars are installed along the axial direction of the FRP inner tube and run through the corresponding through holes on the "U"-shaped connecting parts , through binding and fixing, the reinforcing steel bar and the "U"-shaped connecting parts are closely connected to form an integrated whole to bear the force together.

Further, a prefabricated FRP sheet is also arranged between the FRP outer tube and the concrete sandwich layer, the FRP sheet is in the shape of a cylinder, and there are multiple annular grooves on the FRP sheet; the annular grooves are embedded in a "U" shape On the top of the connecting part, the annular groove has the same width as the "U"-shaped connecting part, the bottom of the annular groove is set on the reinforcing steel bar, and the top is flush with the top of the "U"-shaped connecting part. This structure not only ensures that there is a cavity between the FRP inner tube and the FRP outer tube, but also provides a membrane for the forming of the FRP outer tube to ensure that the FRP outer tube can be wound and formed accurately. The pipe is supported by the "U"-shaped connecting parts and the fusion parts at both ends of the pipe make the inner and outer pipes of FRP form a hollow double-walled FRP as a whole.

Further, a second ring-shaped rib belt of glass fiber reinforced plastic is also arranged in the ring groove on the glass fiber reinforced plastic sheet, and the second ring-shaped rib belt of glass fiber reinforced plastic matches with the ring groove and is integrally connected with the glass fiber reinforced plastic outer tube. The second FRP annular rib set in the annular groove of the FRP sheet has the same function as the first annular rib. It binds the FRP sheet tube to the "U"-shaped connecting part and the reinforcing steel bar to ensure that the prefabricated tube Shaped FRP sheet is stable, and at the same time, the second FRP annular rib belt is integrated with the FRP outer tube to enhance the strength of the FRP outer tube; in addition, the second FRP annular rib forms an inward bulge on the inner wall of the FRP outer tube The boss, which is finally embedded in the outer wall of the concrete sandwich layer, can more effectively limit the axial relative displacement/sliding between the FRP outer tube and the concrete sandwich layer, and ensure common stress.

Further, the connecting piece is made of metal material or hard composite material. It can ensure that no matter what the situation is, it can bear and transmit the external force or internal force of the concrete sandwich layer and the glass steel pipe, and ensure that the glass steel pipe and the concrete sandwich layer are combined as a whole to bear the force.

A processing method for a high-strength composite pipe of double-wall inner rib glass fiber reinforced plastic sandwich concrete comprises the following steps:

a. According to the designed wall thickness, on the FRP pipe winding production line, use the corresponding mold to wind and process the FRP inner pipe as the lining;

b. After the FRP inner tube is formed and solidified, the "U"-shaped connecting parts are positioned on the outside and simply fixed, and each set of "U"-shaped connecting parts is arranged in an array along the axial and circumferential directions of the pipe;

c. Utilize FRP winding equipment to wrap the first FRP ring-shaped rib belt in a hoop direction, so that the first FRP ring-shaped rib belt passes through the bottom of the groove of the "U"-shaped connecting part, and fix the "U"-shaped connecting part in the FRP. At the same time, the FRP annular rib belt is bonded and fused with the FRP inner tube FRP body at the gap between each "U"-shaped connecting part to form a whole, so that the "U"-shaped connecting part is embedded in the annular ribbed belt;

d. Along the axial direction of the pipeline, penetrate the through holes corresponding to each group of "U"-shaped connecting parts into the reinforcing steel bars, and bind and fix them, and then spirally wind a group of stirrups on the reinforcing steel bars to form a reinforcing steel cage;

e. Use the spray lining method or hand lay-up method to make a semicircular glass fiber reinforced plastic sheet with an annular groove on a special mold, and cover the prefabricated semicircular fiberglass fiber reinforced plastic sheet on the workpiece that has previously completed the above d process. The groove corresponds to the top groove embedded in the "U"-shaped connecting part, and the interface of the prefabricated sheet is bonded and fixed with glass fiber felt and resin;

f. Utilize the FRP winding equipment to wrap the second FRP annular rib belt circumferentially, so that the second FRP annular rib belt is wound in the annular groove of the FRP sheet and fills up, and the second FRP annular rib belt binds the FRP sheet It is fixed on the "U"-shaped connecting part, so that on the FRP inner tube with mold, an inner tire mold of a FRP outer tube is fixed and supported by the connecting piece;

g. Place the mold of the inner tube mold of the FRP outer pipe that has been made on the FRP pipe winding station, and wind the FRP outer pipe on the mold through the winding equipment, and wrap the FRP structure layer at both ends of the pipe while winding the outer pipe , so that the FRP inner and outer pipes are connected as a whole, and the glass steel pipe socket and socket are formed on the pipe mold, and the pouring hole is reserved at the fusion of the inner and outer walls of the socket end;

After the h and g processes are completed, transfer the mold to the trimming table, and trim the groove of the sealing rubber ring at the pipe socket;

i. After the above process is completed, the mold is transferred to the demoulding machine station for demoulding, the pipe and the mold are separated, and the glass steel pipe body is completed since then;

j. Transfer the completed glass steel pipe body to the concrete pouring workshop, and use a concrete pump to pour self-compacting micro-expansion concrete into the cavity between the inner and outer pipes through the reserved pouring hole. After the concrete is poured, transfer the pipe to From the curing area to the expiration of the curing period, the reserved pouring hole shall be cleared after passing the inspection, the pouring hole shall be closed with glass fiber reinforced plastic material, and then transferred to the finished product stacking area for horizontal stacking.

In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

1. The high-strength composite pipe with double-wall inner rib glass-steel sandwich concrete of the present invention solves the design problem of the traditional high-strength composite pipe of glass-steel glass-steel glass concrete, and can effectively combine the glass steel pipe with the concrete sandwich layer by means of the design of the connector. Overall, to ensure the stability of the overall pipeline, and to show the performance of the two pipelines;

2. Combining the design of the "U"-shaped connecting part and the design of the first FRP annular rib belt can effectively make the connecting part embedded and fixed on the outer wall of the FRP pipe and form a whole, which is effective in the design of through holes and reinforcing steel bars The axial and radial relative displacement between the glass steel pipe and the concrete sandwich layer is limited, thereby ensuring that the pipes of the two materials are more stable, thus showing that the high-strength composite pipe has high strength, strong bearing capacity, corrosion resistance, Superior performance such as light weight;

3. Combined with the design of the FRP outer tube, the concrete sandwich layer can be effectively installed in the high-strength composite tube as an interlayer. Both the inner and outer tube layers are made of FRP material, which can effectively highlight the performance of the FRP material. Due to the design of implanting reinforced steel bars The bearing capacity of the overall high-strength composite pipe can be effectively improved, and the concrete material can be effectively reduced. Therefore, the high-strength composite pipe is lighter in weight, the processing technology is simple, and the application performance of the high-strength composite pipe is stronger, which is beneficial to the The production, transportation and application of high-strength composite pipes are used in various environments.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic cross-sectional view of the utility model;

Fig. 3 is a schematic structural view of another embodiment of the present invention.

Marks in the figure: 1-GRP inner tube, 2-Concrete sandwich layer, 3-"U"-shaped connecting parts, 4-Socket, 5-Socket, 6-First FRP annular rib, 7-Through hole, 8 -reinforcing steel bar, 9-glass fiber reinforced plastic outer pipe, 10-second fiberglass reinforced plastic annular rib belt, 11-glass fiber reinforced plastic support, 12-stirrup, 13-glass fiber reinforced plastic sheet, 14-pouring hole.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail.

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Example 1

The high-strength composite pipe with double-wall inner rib FRP sandwich concrete, as shown in Figure 1 and Figure 2, includes the FRP inner pipe 1 as the inner lining layer, and the FRP outer pipe 9 as the outer wall, the FRP inner pipe 1 and the FRP outer pipe 9 is provided with a concrete sandwich layer 2, and a connector is also provided between the glass fiber reinforced plastic inner tube 1 and the concrete sandwich layer 2 so that the glass fiber reinforced plastic inner tube 1 and the concrete sandwich layer 2 are integrated, the glass fiber reinforced plastic inner tube and the concrete sandwich layer 2 The fiberglass outer tube is fused together at both ends of the pipe.

One end of the fusion of the FRP inner tube and the FRP outer tube is provided with a FRP socket 5 , and the other end is provided with a FRP socket 4 .

Using the fiberglass inner pipe as the inner lining and as the transmission pipe can effectively ensure the smoothness of the inner wall of the pipe, ensure the service life of the entire high-strength composite pipe, and use the structure of the concrete sandwich layer to ensure the strength of the overall high-strength composite pipe. Connectors are used to connect the glass steel pipe and the concrete sandwich layer as a whole to realize the combination of the performance of the concrete sandwich layer and the glass steel pipe. Better bearing capacity effectively guarantees the use effect of the pipeline and improves the service life of the pipeline under the condition that the cost is roughly the same.

Based on the design principles of the above specific embodiments, in another specific embodiment, the FRP inner pipe and the FRP outer pipe are fused together at the two ends of the pipe to form a pouring hole 14 at the socket of the FRP pipe for pouring. Concrete, close the pouring hole after pouring concrete. The purpose of the pouring hole is mainly for pouring concrete, especially at the position where the hole is opened on the side and the position will not affect the rigidity of the entire pipeline.

Based on the design principles of the above-mentioned specific embodiments, in another specific embodiment, the connector includes a plurality of "U"-shaped connecting parts 3, and the "U"-shaped connecting parts 3 are distributed in an array along the axial and circumferential directions of the pipeline. As a specific design, the "U" connectors 3 form a co-circular and collinear distribution, and the corresponding "U"-shaped connectors are arranged on the same straight line, which is parallel to the axis of the FRP inner tube. More specifically, the "U" connecting part may be in the shape of an "L" or an "I". More specifically, the connecting piece is a connecting part with a mounting surface at the bottom so that the first fiberglass annular rib belt can be bundled and fixed.

Based on the design principle of the above-mentioned specific implementation, in order to better fix the "U"-shaped connecting parts, especially when the structure designed for the current high-strength composite pipe cannot perfectly solve the problem of fixing the connecting piece and the FRP inner pipe, use A more advantageous fixing method can also provide the function of axial positioning. In one specific embodiment, the bottom of the "U"-shaped connecting part is in contact with the outside of the FRP inner tube 1, and the outside of the FRP inner tube 1 A first glass fiber reinforced plastic annular rib belt 6 is provided, and the first glass fiber reinforced plastic annular rib belt 6 passes through the bottom of the groove of the "U"-shaped connecting part and is wound circularly, and the "U"-shaped connecting part 3 is bundled and fixed on the glass fiber reinforced plastic inner tube 1, And integrate with it to bear the force together. The width of the first FRP annular rib belt is consistent with the groove of the "U"-shaped connecting part, and each group of "U"-shaped connecting parts is used as the circumference base of the first FRP annular rib belt. Since the "U"-shaped connecting parts are distributed at equal intervals and have gaps, the first fiberglass annular rib belt and the fiberglass inner tube form an integral body between the gaps. It can be seen from this method that the design of this method can effectively ensure the fixing of the "U"-shaped connecting parts through the fusion of the first FRP annular rib belt and the FRP inner tube as a whole. , the first fiberglass annular rib is in the shape of a boss. The boss can effectively limit the axial relative displacement/sliding between the FRP outer tube and the concrete sandwich layer.

Based on the design principles of the above-mentioned specific embodiments, in another specific embodiment, at least a pair of through holes 7 are provided on the upper side walls of the "U"-shaped connecting part 3 for axially penetrating and fixing reinforcing steel bars 8 . In a more specific design, there is at least one layer of steel bars in the concrete sandwich layer 2, and the outer circumference of the reinforcing steel bars 8 is spirally wound with stirrups 12 to bind them together; The corresponding through holes 7 on the parts are fixed by binding, and the reinforcing steel bars 8 are closely connected with the "U"-shaped connecting parts to form an overall common force. In an operable manner, two pairs of through holes are provided on the "U"-shaped connecting part for axially penetrating and fixing the reinforcement bars 8 . The reinforcing steel bar 8 formed has two layers, namely an inner layer and an outer layer, and the circumference diameter of the inner layer is smaller than that of the outer layer. As a specific design, in this design, the through holes 7 are a pair, and the reinforcement bars 8 are one layer. The reinforcement bars are also distributed in a circular array after passing through the through hole and axially distributed along the centerline of the FRP inner tube. As a specific design structure, the "U"-shaped connecting part has two sides, and the corresponding through holes are respectively arranged on the sides, and the two through holes are arranged along the axial direction of the high-strength composite pipe. The combination makes the through-holes on each group of corresponding "U"-shaped connection parts be located on the same straight line. More specifically, the stirrups are made of metal materials, such as steel bars or steel wires.

More specifically, in another specific embodiment, a glass fiber reinforced plastic sheet 13 is also arranged between the glass fiber reinforced plastic outer tube and the concrete sandwich layer, the glass fiber reinforced plastic sheet 13 is cylindrical, and there are many annular concave holes Groove; the annular groove is embedded in the top of the "U"-shaped connecting part, the annular groove is the same width as the "U"-shaped connecting part, the bottom of the annular groove is set on the reinforcing steel bar 8, and the top is flush with the top of the "U"-shaped connecting part. That is, the structure of the FRP sheet 13 is matched with the concrete sandwich layer, the "U"-shaped connecting parts and the reinforcement bars. Specifically, the FRP sheet 13 includes an upper half FRP sheet and a lower half FRP sheet, and the upper half FRP sheet and the lower half FRP sheet form a cylindrical FRP sheet 13 . More specifically, the thickness of the FRP sheet 13 is 1-3 mm.

In another specific embodiment, a second FRP annular rib 10 is arranged in the annular groove on the FRP sheet 13, and the second FRP annular rib matches with the annular groove and is integrally connected with the FRP outer tube. Due to the same material, the second fiberglass annular rib belt is integrated with the fiberglass outer tube.

Based on the design principles of the above specific embodiments, in another specific embodiment, the connecting member 3 is made of steel material or hard composite material. Glass fiber reinforced plastics can also be used in order to facilitate processing and reduce costs, thereby using steel materials.

More specifically, the first and second fiberglass annular ribbed strips are made of glass fibers impregnated with resin and wound in a hoop direction by a winding machine.

Example 2

The high-strength composite pipe with double-walled inner rib FRP sandwich concrete, as shown in Figure 3, includes a FRP inner pipe 1 as an inner lining layer, and a FRP outer pipe 9 as an outer wall, and the connection between the FRP inner pipe 1 and the FRP outer pipe 9 There is a concrete sandwich layer 2 between them, and a connector is provided between the glass fiber reinforced plastic inner tube 1 and the concrete sandwich layer 2 so that the glass fiber reinforced plastic inner tube 1 and the concrete sandwich layer 2 form an integral body, the glass fiber reinforced plastic inner tube and the glass fiber reinforced plastic outer tube The pipes are fused together at both ends of the pipe, forming a glass steel pipe socket 5 at one end and a glass steel pipe socket 4 at one end.

As more specifically, the connector is a fiberglass support 11, the top and bottom of the fiberglass support 11 are respectively connected to the FRP outer pipe 9 and the FRP inner pipe 1, and the connection between the FRP outer pipe 9 and the FRP inner pipe 1 is filled with concrete to form Multi-section concrete sandwich layer 2.

In the design of this structure, after the FRP outer tube is processed and formed, a through hole for injecting concrete is opened on the side wall of the FRP outer tube to complete the production of the high-strength composite tube.

Example 3

A processing method for a high-strength composite pipe of double-wall inner rib glass fiber reinforced plastic sandwich concrete comprises the following steps:

a. According to the designed wall thickness, on the FRP pipe winding production line, use the corresponding mold to wind and process the FRP inner pipe as the lining;

b. After the FRP inner tube is formed and solidified, the "U"-shaped connecting parts are positioned on the outside and simply fixed, and each set of "U"-shaped connecting parts is arranged in an array along the axial and circumferential directions of the pipe;

c. Utilize FRP winding equipment to wrap the first FRP ring-shaped rib belt in a hoop direction, so that the first FRP ring-shaped rib belt passes through the bottom of the groove of the "U"-shaped connecting part, and fix the "U"-shaped connecting part in the FRP. At the same time, the FRP annular rib belt is bonded and fused with the FRP inner tube FRP body at the gap between each "U"-shaped connecting part to form a whole, so that the "U"-shaped connecting part is embedded in the annular ribbed belt;

d. Along the axial direction of the pipeline, penetrate the through holes corresponding to each group of "U"-shaped connecting parts into the reinforcing steel bars, and bind and fix them, and then spirally wind a group of stirrups on the reinforcing steel bars to form a reinforcing steel cage;

e. Use the spray lining method or hand lay-up method to make a semicircular glass fiber reinforced plastic sheet with an annular groove on a special mold, and cover the prefabricated semicircular fiberglass fiber reinforced plastic sheet on the workpiece that has previously completed the above d process. The groove corresponds to the top groove embedded in the "U"-shaped connecting part, and the interface of the prefabricated sheet is bonded and fixed with glass fiber felt and resin;

f. Utilize the FRP winding equipment to wrap the second FRP annular rib belt circumferentially, so that the second FRP annular rib belt is wound in the annular groove of the FRP sheet and fills up, and the second FRP annular rib belt binds the FRP sheet It is fixed on the "U"-shaped connecting part, so that on the FRP inner tube with mold, an inner tire mold of a FRP outer tube is fixed and supported by the connecting piece;

g. Place the mold of the inner tube mold of the FRP outer pipe that has been made on the FRP pipe winding station, and wind the FRP outer pipe on the mold through the winding equipment, and wrap the FRP structure layer at both ends of the pipe while winding the outer pipe , so that the FRP inner and outer pipes are connected as a whole, and the glass steel pipe socket and socket are formed on the pipe mold, and the pouring hole is reserved at the fusion of the inner and outer walls of the socket end;

After the h and g processes are completed, transfer the mold to the trimming table, and trim the groove of the sealing rubber ring at the pipe socket;

i. After the above process is completed, the mold is transferred to the demoulding machine station for demoulding, the pipe and the mold are separated, and the glass steel pipe body is completed since then;

j. Transfer the completed glass steel pipe body to the concrete pouring workshop, and use a concrete pump to pour self-compacting micro-expansion concrete into the cavity between the inner and outer pipes through the reserved pouring hole. After the concrete is poured, transfer the pipe to From the curing area to the expiration of the curing period, the reserved pouring hole shall be cleared after passing the inspection, the pouring hole shall be closed with glass fiber reinforced plastic material, and then transferred to the finished product stacking area for horizontal stacking.

To sum up, the double-wall inner rib FRP sandwich concrete high-strength composite pipe of the utility model solves the design problem of the traditional FRP FRP high-strength composite pipe, and the design of the connector can effectively make the glass steel pipe and the concrete sandwich The combination of layers ensures the stability of the overall pipeline and can show the superior performance of the two pipelines.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline, it is characterised in that: including the glass as liner layer Steel inner tube (1), and as the glass reinforced plastic outer tube (9) of outer wall, be provided between glass reinforced plastic inner tube (1) and glass reinforced plastic outer tube (9) Concrete sandwich layer (2) is additionally provided with connector so that glass reinforced plastic between the glass reinforced plastic inner tube (1) and concrete sandwich layer (2) Inner tube (1) unifies with concrete sandwich layer (2), and the glass reinforced plastic inner tube and glass reinforced plastic outer tube merge in pipe ends portion one It rises.

2. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as described in claim 1, it is characterised in that: glass Steel inner tube and the fused one end of glass reinforced plastic outer tube are provided with glass reinforced plastic pipe bellmouth (5), and the other end is provided with glass reinforced plastic pipe socket (4)。

3. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as claimed in claim 2, it is characterised in that: the glass Glass steel inner tube and glass reinforced plastic outer tube are fused together formed glass reinforced plastic pipe spigot in pipe ends portion and are reserved with pouring hole (14) to be used for concrete perfusion, the concrete perfusion rear enclosed pouring hole.

4. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as described in claim 1, it is characterised in that: the company Fitting includes multiple " u "-shaped connecting components (3), and the " u "-shaped connecting component (3) is along pipeline axial direction and circumferencial direction array distribution.

5. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as claimed in claim 4, it is characterised in that: should The bottom of " u "-shaped connecting component and glass reinforced plastic inner tube (1) outer side contacts, glass reinforced plastic inner tube are provided with the first glass on the outside of (1) Steel loop shape ribbed belt (6), the first glass reinforced plastic circumferential rib band (6) pass through the bottom portion of groove ring-wound of " u "-shaped connecting component, " u "-shaped connecting component (3), which is tied up, to be fixed on glass reinforced plastic inner tube (1), and the common stress that combines together therewith.

6. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as claimed in claim 4, it is characterised in that: should At least provided with a pair of of through-hole (7) so as to axial interspersed fixed stiffener (8) on " u "-shaped connecting component (3) top two sidewalls.

7. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as claimed in claim 6, it is characterised in that: coagulation Native laminboard layer (2) is inner at least provided with one layer of stiffener, which has stirrup (12) to tie up Together；Stiffener (8) is axially mounted along glass reinforced plastic inner tube, through corresponding through-hole (7) in " u "-shaped connecting component, passes through Fixation is tied up, stiffener (8) and " u "-shaped connecting component are connected to form the common stress of one.

8. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as claimed in claim 7, it is characterised in that: the glass It is additionally provided between glass steel outer tube and concrete sandwich layer prefabricated sheet of glass fiber reinforced plastics (13), sheet of glass fiber reinforced plastics (13) is at cylinder Shape has a plurality of annular groove on sheet of glass fiber reinforced plastics；Annular groove is embedded at the top of " u "-shaped connecting component, and annular groove and " u "-shaped connect Relay part is set on stiffener (8) with width, annular groove bottom, is flushed at the top of top and " u "-shaped connecting component.

9. double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline as claimed in claim 8, it is characterised in that: glass Be additionally provided with the second glass reinforced plastic circumferential rib band (10) in annular groove on steel sheets (13), the second glass reinforced plastic circumferential rib band with Annular groove is matched and is linked together with glass reinforced plastic outer tube.

10. such as the described in any item double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipelines of claim 1-9, feature Be: the connector is made of metal material or rigid composite material.