FRP (Fiber Reinforced Plastic) pipe lightweight concrete combined member

Abstract

The utility model belongs to the field of drainage engineering facilities, and discloses an FRP pipe lightweight concrete combined member, which comprises drainage ditch prefabricated members, direct connecting members and bent connecting members, FRP pipes are installed in the drainage ditch prefabricated members, a plurality of groups of cover plates are installed on the drainage ditch prefabricated members, and the drainage ditch installation can be completed by connecting the plurality of groups of drainage ditch prefabricated members. The drainage ditch prefabricated parts can be connected through direct-connection connecting pieces, if the drainage ditch needs to be bent, the drainage ditch prefabricated parts can be connected through bent connecting pieces at the bent positions, and during connection, the FRP pipes are connected with the connecting pipes in the connecting pieces in a welded mode, so that connection can be completed; the drainage ditch component is compact and reasonable in structural design, convenient to transport and convenient and fast to use and install, the construction period can be greatly shortened, and economic benefits are created.

Description

Technical Field

[0001] The utility model relates to the field of drainage engineering facilities, in particular to an FRP pipe lightweight concrete composite component. Background Art

[0002] FRP pipe is a glass fiber reinforced polypropylene pipe, produced by glass fiber modified polypropylene material treated with coupling agent. FRP pipe is corrosion resistant, high temperature resistant, high pressure resistant, hygienic and non-toxic, recyclable, suitable for corrosive liquid transportation (such as acid and alkali solution) and municipal water supply and drainage system. It has excellent impact resistance and tensile strength, light weight, easy installation and maintenance, and existing hot air welding connection, hot melt connection and flange connection methods, and is widely used in chemical, chemical fiber, chlorine alkali, dye, water supply and drainage, food, medicine, sewage treatment, electrolysis and other industries.

[0003] In municipal engineering, road engineering, and even building construction, drainage ditches are a vital engineering project. In municipal engineering, drainage ditches are often used to discharge urban sewage. In road engineering, drainage ditches are often used to discharge water to prevent water from eroding and damaging structures such as embankments, retaining walls, and tunnels. In building construction, drainage ditches are used to discharge domestic sewage, accumulated rainwater, etc.

[0004] There are several common construction methods for drainage ditches. During the construction of cast-in-place drainage ditches, formwork needs to be set up and poured inside the formwork. After pouring, the formwork needs to be removed. The whole process is relatively complicated and the construction period is long. In addition, for drainage ditches with complex structures, it is easy for insufficient vibration to occur during construction and pouring, resulting in voids and fractures in the drainage ditches. Some small and medium-sized drainage ditches use the method of directly burying drainage pipes. Small drainage ditches bury plastic pipes and use concrete to wrap the pipes. During the hardening process of concrete, the heat expansion caused by the cement hydration reaction or the sharp stones in the concrete against the pipe wall can easily cause the pipe to rupture. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies of the prior art, the utility model provides an FRP pipe lightweight concrete composite component to solve the problems of long construction period of drainage ditch and easy damage of buried pipes raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an FRP tube lightweight concrete composite component, comprising a drain ditch prefabricated component, a direct connection component and a curved connection component, wherein the drain ditch prefabricated component is installed with an FRP tube, and multiple groups of cover plates are installed on the drain ditch prefabricated component. The drain ditch prefabricated component is connected to another group of drain ditch prefabricated components through a direct connection component, and the drain ditch prefabricated component can also be connected to another group of drain ditch prefabricated components through a curved connection component.

[0009] Preferably, a circular groove is provided at the bottom of the drainage ditch prefabricated part corresponding to the FRP tube, and a fitting groove is provided at the wall of the drainage ditch prefabricated part corresponding to the FRP tube. The diameters of the circular groove and the fitting groove are larger than the outer diameter of the FRP tube. The FRP tube is installed in the circular groove, and the connecting gap is filled with cement slurry. Both ends of the FRP tube extend to the outside of the drainage ditch prefabricated part. Two groups of caps are provided on the wall of the drainage ditch prefabricated part. Cover plates are installed on the drainage ditch prefabricated part corresponding to the two groups of caps, and the cover plates are connected to the drainage ditch prefabricated part through cement slurry.

[0010] Preferably, a weight-reducing groove is provided at the bottom of the cover plate.

[0011] Preferably, the direct-connector comprises a direct-connector groove bottom, two groups of direct-connector groove walls and a direct-connector connecting pipe, two groups of grooves are provided on the direct-connector groove bottom, the lower ends of the two groups of direct-connector groove walls are provided with protrusions corresponding to the grooves, the protrusions are inserted into the grooves, the two groups of direct-connector groove walls are installed on the direct-connector groove bottom through the protrusions, the two groups of direct-connector groove walls and the direct-connector groove bottom are connected through cement slurry, the direct-connector groove bottom and the two groups of direct-connector groove walls are provided with pipe grooves corresponding to the direct-connector connecting pipes, the direct-connector connecting pipes are fixedly installed in the pipe grooves, the two ends of the direct-connector are respectively connected to the two groups of drainage ditch prefabricated parts, one end of the direct-connector connecting pipe is welded to the FRP pipe in the drainage ditch prefabricated part, and the other end of the direct-connector connecting pipe is welded to the FRP pipe in the other group of drainage ditch prefabricated parts.

[0012] Preferably, the curved connector includes an upper curved connector, a lower curved connector and a curved connecting pipe, the upper curved connector and the lower curved connector are connected by cement slurry, and curved pipe grooves corresponding to the curved connecting pipes are opened inside the upper curved connector and the lower curved connector, and the curved connecting pipe is fixedly installed in the curved pipe grooves, and both ends of the curved connector are respectively connected to two groups of drainage ditch prefabricated parts, one end of the curved pipe groove is welded to the FRP pipe in the drainage ditch prefabricated part, and the other end of the curved pipe groove is welded to the FRP pipe in another group of drainage ditch prefabricated parts.

[0013] Preferably, the cement paste is a 1:1 cement paste, and the cement grade is P·O 42.5.

[0014] Preferably, the drainage ditch prefabricated parts, the direct connection parts, the curved connection parts and the cover plates are all made of aerated concrete with a strength grade greater than 42.5.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a FRP tube lightweight concrete composite component, which has the following beneficial effects:

[0017] 1. The FRP pipe lightweight concrete composite component is equipped with drainage ditch prefabricated parts, direct connection parts and curved connection parts, which can effectively improve the service life of the FPR pipe. The prefabricated parts have low density, light weight, easy transportation and installation. The use of prefabricated parts is convenient and fast, which can greatly shorten the construction period and create economic benefits.

[0018] 2. A circular groove is set at the bottom of the drainage ditch prefabricated part. The circular groove has a high degree of fit with the FPR pipe, which can better support the FPR pipe and increase the service life of the FPR pipe.

[0019] 3. All components of the utility model are prefabricated with concrete. Compared with cast-in-place concrete, prefabricated parts are fast to construct and have a simple and convenient construction process. They can greatly shorten the construction period, reduce workers' wage expenses, and create economic benefits.

[0020] 4. Use aerated concrete to make all prefabricated parts. Compared with ordinary concrete, aerated concrete has a lower density, which can make the prefabricated parts lighter, easier to transport, and less manpower consumption during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the prefabricated drainage ditch of the utility model;

[0023] Figure 3 This is a schematic diagram of the cover structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the direct connection member of the utility model;

[0025] Figure 5 This is a schematic diagram of the groove bottom structure of the direct connection piece of the utility model;

[0026] Figure 6 This is a schematic diagram of the groove wall structure of the direct connection part of the utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the direct-connection connector of the utility model;

[0028] Figure 8 This is a schematic diagram of the curved connector of the utility model;

[0029] Fig. 9 This is a schematic diagram of the structure of the lower curved connecting piece of the utility model;

[0030] Fig.10 This is a schematic diagram of the structure of the upper curved connecting piece of the utility model;

[0031] Fig.11 It is a schematic diagram of the lower curved connecting piece of the utility model.

[0032] In the figure: 1. prefabricated drainage ditch; 2. direct connection; 3. bent connection; 4. circular groove; 5. fitting groove; 6. cap; 7. cover plate; 8. weight reduction groove; 9. FRP pipe; 10. bottom of direct connection; 11. wall of direct connection; 12. direct connection pipe; 13. groove; 14. bump; 15. pipe groove; 16. upper bent connection; 17. lower bent connection; 18. bent pipe groove; 19. bent connection pipe. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-11 , the utility model provides a technical solution:

[0035] An FRP pipe lightweight concrete composite component includes a drainage ditch prefabricated component 1, a direct connection component 2 and a curved connection component 3. An FRP pipe 9 is installed in the drainage ditch prefabricated component 1. A plurality of cover plates 7 are installed on the drainage ditch prefabricated component 1. The drainage ditch prefabricated component 1 is connected to another group of drainage ditch prefabricated components 1 through the direct connection component 2. The drainage ditch prefabricated component 1 can also be connected to another group of drainage ditch prefabricated components 1 through the curved connection component 3. After the drainage ditch foundation pit construction is completed and accepted, the drainage ditch prefabricated component 1 can be installed in the foundation pit. C15 mortar is recommended for the installation of small drainage ditches, and C25 concrete is recommended for the installation of larger drainage ditches. The drainage ditch installation can be completed by connecting a plurality of drainage ditch prefabricated components 1. The direct connection component 2 is used to directly connect the drainage ditch prefabricated components 1 to the drainage ditch prefabricated components 1. If the drainage ditch needs to bend, the curved connection component 3 is used to connect the drainage ditch prefabricated components 1 to the drainage ditch prefabricated components 1 at the bend.

[0036] Furthermore, a circular groove 4 is provided at the bottom of the drainage ditch prefabricated part 1 corresponding to the FRP tube 9, and a fitting groove 5 is provided at the wall of the drainage ditch prefabricated part 1 corresponding to the FRP tube 9. The diameters of the circular groove 4 and the fitting groove 5 are larger than the outer diameter of the FRP tube 9. The FRP tube 9 is installed in the circular groove 4, and the connecting gap is filled with cement slurry. Both ends of the FRP tube 9 extend to the outside of the drainage ditch prefabricated part 1. Two groups of caps 6 are provided on the wall of the drainage ditch prefabricated part 1. Cover plates 7 are installed at the corresponding positions of the two groups of caps 6 on the drainage ditch prefabricated part 1. The cover plates 7 are connected to the drainage ditch prefabricated part 1 through cement slurry. The circular groove 4 is used to better support the FRP tube 9, which can improve durability and increase the service life of the FRP tube 9. The fitting groove 5 is used to prevent the FRP tube 9 from moving horizontally, and the FRP tube 9 can be installed and fixed more firmly.

[0037] Furthermore, a weight-reducing groove 8 is provided at the bottom of the cover plate 7. The weight-reducing groove 8 can reduce the weight of the cover plate 7, making the cover plate 7 lighter and more convenient to transport.

[0038] Furthermore, the direct-connection connector 2 comprises a direct-connection connector groove bottom 10, two groups of direct-connection connector groove walls 11 and a direct-connection connector pipe 12. Two groups of grooves 13 are provided on the direct-connection connector groove bottom 10. The lower ends of the two groups of direct-connection connector groove walls 11 are provided with protrusions 14 corresponding to the grooves 13. The protrusions 14 are inserted into the grooves 13. The two groups of direct-connection connector groove walls 11 are installed on the direct-connection connector groove bottom 10 through the protrusions 14. The two groups of direct-connection connector groove walls 11 and the direct-connection connector groove bottom 10 are connected by cement slurry. To make the connection, the bottom 10 of the direct connection part and the two groups of direct connection part trench walls 11 are provided with pipe grooves 15 corresponding to the direct connection pipes 12. The direct connection pipes 12 are fixedly installed in the pipe grooves 15. The two ends of the direct connection part 2 are respectively connected to the two groups of drainage ditch prefabricated parts 1. One end of the direct connection pipe 12 is welded to the FRP pipe 9 in the drainage ditch prefabricated part 1, and the other end of the direct connection pipe 12 is welded to the FRP pipe 9 in the other group of drainage ditch prefabricated parts 1. The inner diameter of the direct connection pipe 12 is slightly larger than the outer diameter of the FRP pipe 9. The FRP pipe 9 can be inserted into the direct connection pipe 12. After that, the direct connection pipe 12 sleeved on the FRP pipe 9 can be melted by hot air welding so that the FRP pipe 9 and the direct connection pipe 12 are firmly bonded together. The welding should be complete and reliable, and the airtightness should be ensured without water leakage.

[0039] Furthermore, the curved connector 3 includes an upper curved connector 16, a lower curved connector 17 and a curved connecting pipe 19. The upper curved connector 16 and the lower curved connector 17 are connected by cement paste. A curved pipe groove 18 corresponding to the curved connecting pipe 19 is provided inside the upper curved connector 16 and the lower curved connector 17. The curved connecting pipe 19 is fixedly installed in the curved pipe groove 18. The two ends of the curved connector 3 are respectively connected to two groups of drainage ditch prefabricated parts 1. One end of the curved pipe groove 18 is welded to the FRP pipe 9 in the drainage ditch prefabricated part 1, and the other end of the curved pipe groove 18 is welded to the FRP pipe 9 in another group of drainage ditch prefabricated parts 1. The inner diameter of the curved connecting pipe 19 is slightly larger than the outer diameter of the FRP pipe 9. The FRP pipe 9 can be inserted into the curved connecting pipe 19, and then the FRP pipe 9 can be welded to the curved connecting pipe 19 by hot air welding.

[0040] Furthermore, the cement paste is 1:1 cement paste, and the cement grade is P·O 42.5. In special cases, high-grade cement can be used instead, but the cement grade cannot be reduced.

[0041] Furthermore, the drainage ditch prefabricated component 1, the straight connection component 2, the curved connection component 3 and the cover plate 7 are all made of aerated concrete with a strength grade greater than 42.5. The use of aerated concrete can make the prefabricated components lighter, easier to transport, and less labor-intensive during the installation process.

[0042] Working principle: When the utility model is needed to install a drainage ditch, a layer of mortar or concrete is buried at the bottom of the drainage ditch foundation pit that has passed the acceptance, the drainage ditch prefabricated component 1 is placed at the bottom of the foundation pit, and the mortar or concrete is filled around the drainage ditch prefabricated component 1. Then, cement slurry is used to connect the cover plate 7 to the drainage ditch prefabricated component 1. The direct connection connector 2 can be used to directly connect the drainage ditch prefabricated component 1 with the drainage ditch prefabricated component 1 to extend the length of the drainage ditch. If the drainage ditch needs to turn, the curved connection connector 3 is used to connect the drainage ditch prefabricated component 1 with the drainage ditch prefabricated component 1 at the bend.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An FRP tube lightweight concrete composite component, characterized in that: The invention comprises a drainage ditch prefabricated component (1), a straight connection component (2) and a curved connection component (3); an FRP pipe (9) is installed in the drainage ditch prefabricated component (1); a plurality of cover plates (7) are installed on the drainage ditch prefabricated component (1); the drainage ditch prefabricated component (1) is connected to another group of drainage ditch prefabricated components (1) through the straight connection component (2); and the drainage ditch prefabricated component (1) can also be connected to another group of drainage ditch prefabricated components (1) through the curved connection component (3).

2. The FRP tube lightweight concrete composite component according to claim 1, characterized in that: The drainage ditch prefabricated component (1) is provided with a circular groove (4) at the bottom of the ditch corresponding to the FRP tube (9), and a fitting groove (5) is provided at the ditch wall of the drainage ditch prefabricated component (1) corresponding to the FRP tube (9). The diameters of the circular groove (4) and the fitting groove (5) are larger than the outer diameter of the FRP tube (9). The FRP tube (9) is installed in the circular groove (4), and the connecting gap is filled with cement paste. Both ends of the FRP tube (9) extend to the outside of the drainage ditch prefabricated component (1). Two groups of caps (6) are provided on the ditch wall of the drainage ditch prefabricated component (1). Cover plates (7) are installed on the drainage ditch prefabricated component (1) corresponding to the two groups of caps (6). The cover plates (7) are connected to the drainage ditch prefabricated component (1) through cement paste.

3. The FRP tube lightweight concrete composite component according to claim 2, characterized in that: A weight-reducing groove (8) is provided at the bottom of the cover plate (7).

4. The FRP tube lightweight concrete composite component according to claim 3, characterized in that: The direct-connection connector (2) comprises a direct-connection connector groove bottom (10), two groups of direct-connection connector groove walls (11) and a direct-connection connection pipe (12). The direct-connection connector groove bottom (10) is provided with two groups of grooves (13). The lower ends of the two groups of direct-connection connector groove walls (11) are provided with protrusions (14) corresponding to the grooves (13). The protrusions (14) are inserted into the grooves (13). The two groups of direct-connection connector groove walls (11) are installed on the direct-connection connector groove bottom (10) through the protrusions (14). The two groups of direct-connection connector groove walls (11) and the direct-connection connector groove bottom (10) are connected by cement net The straight connection piece (2) is connected by grout, the straight connection piece trench bottom (10) and the two groups of straight connection piece trench walls (11) are both provided with a pipe groove (15) corresponding to the straight connection pipe (12), the straight connection pipe (12) is fixedly installed in the pipe groove (15), the two ends of the straight connection piece (2) are respectively connected to the two groups of drainage ditch prefabricated parts (1), one end of the straight connection pipe (12) is welded to the FRP pipe (9) in the drainage ditch prefabricated part (1), and the other end of the straight connection pipe (12) is welded to the FRP pipe (9) in the other group of drainage ditch prefabricated parts (1).

5. The FRP tube lightweight concrete composite component according to claim 1, characterized in that: The curved connector (3) comprises an upper curved connector (16), a lower curved connector (17) and a curved connector pipe (19); the upper curved connector (16) and the lower curved connector (17) are connected by cement paste; curved pipe grooves (18) corresponding to the curved connector pipe (19) are provided inside the upper curved connector (16) and the lower curved connector (17); the curved connector pipe (19) is fixedly installed in the curved pipe groove (18); the two ends of the curved connector (3) are respectively connected to two groups of drainage ditch prefabricated parts (1); one end of the curved pipe groove (18) is welded to the FRP pipe (9) inside the drainage ditch prefabricated part (1); and the other end of the curved pipe groove (18) is welded to the FRP pipe (9) inside the other group of drainage ditch prefabricated parts (1).

6. The FRP tube lightweight concrete composite component according to claim 5, characterized in that: The cement paste is a 1:1 cement paste, and the cement grade is P·O 42.

5.

7. The FRP tube lightweight concrete composite component according to claim 5, characterized in that: The drainage ditch prefabricated component (1), the straight connection component (2), the curved connection component (3) and the cover plate (7) are all made of aerated concrete with a strength grade greater than 42.5.

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