Pipe pile connecting device

Abstract

The utility model discloses a pipe pile connecting device which comprises an upper connecting cylinder, an upper gasket, a rigid connector, a circular supporting plate, a lower gasket and a lower connecting cylinder. The upper connecting cylinder and the lower connecting cylinder are respectively sleeved in the upper section steel pipe pile and the lower section steel pipe pile; threaded grooves are formed in the bottom of the upper connecting cylinder and the top of the lower connecting cylinder, the grooves are in a circular ring shape, and the interiors of the grooves protrude towards the interior of the barrel to form threaded cylinders; the upper gasket and the lower gasket are respectively mounted at the lower end of the bottom groove of the upper connecting cylinder and the upper end of the top groove of the lower connecting cylinder; the rigid connector is a threaded rod, and a circular supporting plate is installed in the middle of the rigid connector to divide the rigid connector into an upper connector body and a lower connector body which are used for being screwed into the threaded grooves of the upper connecting cylinder and the lower connecting cylinder respectively. The connecting task of the upper steel pipe pile and the lower steel pipe pile can be well achieved, meanwhile, the pile connecting mode is simple, and on-site rapid operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering foundations, in particular to a pipe pile connection structure device. Background Art

[0002] Pipe piles are increasingly used in fields such as foundation pit engineering due to their convenient construction and reliable strength. Since pipe piles are subject to strong lateral active earth pressure when used as supporting structures, their bending resistance becomes an important indicator. Generally, as the excavation depth gradually increases, the lateral earth pressure gradually increases, and the bending moment received by the pile body gradually increases. However, due to production and other factors, the length of pipe piles is generally fixed and will not exceed a certain length. Therefore, it is often necessary to connect piles in engineering to make the pile length meet the depth requirements of the foundation pit. Therefore, the connection structure between piles is particularly important: it must not only ensure the stability of the connection between the pile structures, but also have the characteristics of quick installation.

[0003] The existing connection methods between pipe piles mainly include welding method, flange method, etc. The welding method has high requirements for the on-site construction environment and personnel. During construction, the upper and lower piles need to be aligned, otherwise it will cause eccentric compression, affecting the safety of the foundation and superstructure, and the construction fault tolerance rate is low and it is not easy to adjust. When making piles, the flange method uses a flange plate and concrete to be poured together. When connecting the piles, asphalt paper or asbestos board is used to pad the upper and lower sections. After the verticality is checked, the bolts are inserted into the steel plate of the flange plate, and the nuts are tightened symmetrically step by step. After hammering several times, tighten the nuts again and spot weld them. The disadvantages of the flange method are that the manufacturing process is more complicated, and constant calibration is required during the construction process. Its connectors are exposed and easily corroded and damaged. At the same time, its cost is relatively high. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the utility model provides a pipe pile connection solution, which can effectively improve the bending strength of the intermediate piles between the pipe piles. At the same time, the device is easy to install and can well improve the construction efficiency.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a pipe pile connection device, which includes an upper connection tube, an upper gasket, a rigid connector, a circular support plate, a lower gasket and a lower connection tube;

[0006] The upper connecting tube and the lower connecting tube are respectively inserted into the upper and lower sections of the steel pipe piles; threaded grooves are provided in the bottom of the upper connecting tube and the top of the lower connecting tube, the grooves are in the shape of a circular ring and the inside of the grooves protrude inwardly of the barrel to form a threaded tube; the upper washer and the lower washer are respectively installed at the lower end of the groove at the bottom of the upper connecting tube and the upper end of the groove at the top of the lower connecting tube; the rigid connector is a threaded rod, and a circular support plate is installed in the middle to divide the rigid connector into an upper connector and a lower connector, which are used to be screwed into the threaded grooves of the upper connecting tube and the lower connecting tube respectively.

[0007] Furthermore, the inner walls of the upper and lower connecting tubes are connected to the outer walls of the upper and lower steel pipe piles by adhesive; and the upper and lower washers are connected to the upper and lower connecting tubes by adhesive.

[0008] Furthermore, after installation is completed, the outer edge of the upper connecting tube, the outer edge of the circular support plate and the outer edge of the lower connecting tube are fixedly connected by welding.

[0009] Furthermore, the circular support plate is connected to the rigid connector as a whole.

[0010] Furthermore, the upper connector and the lower connector are of the same length.

[0011] Furthermore, the diameter of the circular support plate is equal to the outer diameter of the pipe pile.

[0012] Furthermore, the thickness of the two ends of the thread groove is inconsistent, one end connected to the gasket is installed on the inner wall of the connecting tube, and a gap is left between the outer wall of the thread groove at the other end and the inner wall of the connecting tube.

[0013] Furthermore, the width of the gap is not less than the thickness of the steel pipe pile.

[0014] Furthermore, detachable handles are installed on the outer walls of the upper connecting tube and the lower connecting tube.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. In the present invention, the rigid connector is screwed into the upper connecting tube and the lower connecting tube through the threads of the upper connector and the lower connector, thereby realizing the connection between the upper section of the steel pipe pile and the lower section of the steel pipe pile from the inside, which can effectively avoid corrosion damage caused by long-term exposure of the connection;

[0017] 2. The outer wall of the upper steel pipe pile and the inner wall of the upper connecting tube, the outer wall of the lower steel pipe pile and the inner wall of the lower connecting tube, the upper washer and the upper connecting tube, and the lower washer and the lower connecting tube are all bonded by sulfur cement. The upper connecting tube, the circular support plate, and the outer edge of the lower connecting tube are welded, which fully guarantees the strength of the connection between the upper and lower pipe piles and has good bending resistance;

[0018] 3. The utility model realizes the connection between the upper section steel pipe pile and the lower section steel pipe pile only through the six parts of the upper connecting tube, the upper washer, the rigid connector, the circular support plate, the lower washer and the lower connecting tube, which has a simple structure and is convenient for production;

[0019] 4. During the construction process, the utility model only needs to sleeve the lower connecting tube on the lower steel pipe pile, and screw the rigid connector into the threaded tube through the detachable handle, and finally install the upper structure in a similar way. The operation is convenient and fast, with low requirements on the construction environment and operators, and easy and quick installation;

[0020] 5. For the lowest section of the steel pipe pile, a connecting tube, an upper washer and a rigid connector can be installed at the bottom, so that the lower end of the pipe pile is set into a pointed cone structure without additional design, so that the bottom of the steel pipe pile can be pressed into the ground more conveniently, thereby improving construction efficiency;

[0021] 6. The detachable handle in the utility model can be selected not to be disassembled under certain circumstances, so that the steel pipe pile can be approximately understood as a bamboo pile, which can improve the support strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the pipe pile connection device;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of each connecting component of the pipe pile connecting device;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the pipe pile connection device after assembly.

[0025] The meanings of the reference numerals in the figure are: upper section of steel pipe pile 1, upper connecting tube 2, upper washer 3, rigid connector 4, upper connector 41, lower connector 42, circular support plate 5, lower washer 6, lower connecting tube 7, lower section of steel pipe pile 8. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1 , Figure 2 , Figure 3 As shown, there are respectively a three-dimensional structural schematic diagram of the pipe pile connection device of this embodiment, a cross-sectional structural schematic diagram of each connection component, and a cross-sectional structural schematic diagram after assembly, which includes an upper section of steel pipe pile 1, an upper connecting tube 2, an upper gasket 3, a rigid connector 4, an upper connector 41, a lower connector 42, a circular support plate 5, a lower gasket 6, a lower connecting tube 7, and a lower section of steel pipe pile 8.

[0028] In this embodiment, the outer walls of the upper connecting tube 2 and the lower connecting tube 7 are both cylindrical, and there are grooves at the bottom of the upper connecting tube 2 and the top of the lower connecting tube 7. The grooves are annular and protrude inwardly to form threaded tubes. The upper connecting tube 2 and the lower connecting tube 7 are respectively sleeved on the bottom of the upper steel pipe pile 1 and the top of the lower steel pipe pile 8. The upper gasket 3 and the lower gasket 6 are respectively nested in the grooves at the bottom of the upper connecting tube 2 and the top of the lower connecting tube 7.

[0029] A circular support plate 5 is provided in the middle of the rigid connector 4. The plane where the circular support plate is located is perpendicular to and equally divides the rigid connector into two parts: an upper connector 41 and a lower connector 42. The cylindrical parts of the upper connector 41 and the lower connector 42 are both threaded. The rigid connector 4 can be screwed into the threaded barrels of the upper connecting barrel 2 and the lower connecting barrel 7 by rotating the detachable handles on the upper connecting barrel 2 and the lower connecting barrel 7 or directly rotating the rigid connector 4, so as to realize the connection between the upper section steel pipe pile 1 and the lower section steel pipe pile 8 from the inside. The diameter of the rigid connector 4 is the same as the inner diameter of the threaded barrel and the thread direction matches. The outer diameter of the threaded barrel is adapted to the inner radial direction of the pipe pile.

[0030] The thickness of the two ends of the thread groove is inconsistent, one end connected with the washer is installed on the inner wall of the connecting tube, and a gap is left between the outer wall of the thread groove and the inner wall of the connecting tube at the other end. The width of the gap is not less than the thickness of the steel pipe pile.

[0031] A preferred solution is: the outer diameter of one end of the threaded barrel is 5mm smaller than the inner diameter of the pile, the wall thickness is 10mm, the inner diameter is the same as the diameter of the rigid connector, and the thread matches the thread on the surface of the rigid connector. The thickness of the circular support plate is 10mm; the length of the rigid connector is 600mm, and the upper and lower connectors divided by the circular support plate are both 295mm long;

[0032] The inner wall of the upper connecting tube 2 and the outer wall of the upper steel pipe pile 1, as well as the inner wall of the lower connecting tube 7 and the outer wall of the lower steel pipe pile 8 are connected by adhesive, and the adhesive in this embodiment is sulfur clay; after applying sulfur clay on the upper surface of the upper washer 3 and the lower surface of the lower washer 6, they are respectively embedded in the grooves at the bottom of the upper connecting tube 2 and the top of the lower connecting tube 7, so that the upper washer 3 and the upper connecting tube 2, and the lower washer 6 and the lower connecting tube 7 are firmly connected. After the rigid connector 4 is screwed into the threaded tubes on the upper connecting tube 2 and the lower connecting tube 7 using the detachable handles on the upper connecting tube 2 and the lower connecting tube 7, the outer edges of the upper connecting tube 2, the circular support plate 5, and the lower connecting tube 7 are welded. In summary, the utility model completes the connection between the upper steel pipe pile 1 and the lower steel pipe pile 8 by threaded connection inside and welding outside, and sulfur clay bonding is used as a supplement where necessary, which fully guarantees the connection strength and bending and shearing strength at the pile connection.

[0033] The specific implementation process of connecting the upper steel pipe pile 1 and the lower steel pipe pile 8 using the pipe pile connection device is described in detail below, including the following steps:

[0034] Step 1: Sleeve the lower connecting tube 7 on the lower section of the steel pipe pile 8, and apply sulfur glue between the inner wall of the lower connecting tube 7 and the outer wall of the lower section of the steel pipe pile 8; apply sulfur glue in the groove at the top of the lower connecting tube 7, and insert the lower gasket 6 into the groove at the top of the lower connecting tube 7. In particular, there is a preferred solution for the lowest section of the steel pipe pile: sulfur glue can be applied to the groove at the bottom of the upper connecting tube 2, and after the upper gasket 3 is inserted into the groove, the upper connecting tube 2 is sleeved on the bottom of the steel pipe pile, and sulfur glue is applied between the inner wall of the upper connecting tube 2 and the outer wall of the steel pipe pile for rapid bonding;

[0035] Step 2: Screw the rigid connector 4 into the lower connecting tube 7 along the thread direction. In particular, there is a preferred solution for the steel pipe pile at the bottom: the rigid connector 4 can be screwed into the upper connecting tube 2, and the pile can be driven into the pile hole;

[0036] Step 3: Apply sulfur cement to the groove at the bottom of the upper connecting tube 2, and insert the upper gasket 3 into the groove;

[0037] Step 4: Align the threaded barrel of the upper connecting barrel 2 with the rigid connector 4, and rotate the detachable handle on the upper connecting barrel 2 to screw the upper connecting barrel 2 into the upper connector 41 of the rigid connector 4;

[0038] Step 5: Use a lifting device to lift the upper steel pipe pile 1 and align it with the upper connecting tube 2. After the upper steel pipe pile 1 is inserted into the upper connecting tube 2, sulphur cement is applied between the outer wall of the upper steel pipe pile 1 and the inner wall of the upper connecting tube 2;

[0039] Step 6: Remove the detachable handles of the upper connecting tube 2 and the lower connecting tube 7. In special cases, the handles can also be retained, and the round pile can be used as a bamboo pile;

[0040] Step 7: Weld the outer edges of the upper connecting tube 2, the circular support plate 5, and the lower connecting tube 7. After the welding is cooled, the connection between the upper steel pipe pile 1 and the lower steel pipe pile 8 is completed.

[0041] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A pipe pile connection device, characterized in that: The device comprises an upper connecting cylinder, an upper gasket, a rigid connector, a circular support plate, a lower gasket and a lower connecting cylinder; The upper connecting tube and the lower connecting tube are respectively inserted into the upper and lower sections of the steel pipe piles; threaded grooves are provided in the bottom of the upper connecting tube and the top of the lower connecting tube, the grooves are in the shape of a circular ring and the inside of the grooves protrude inwardly of the barrel to form a threaded tube; the upper washer and the lower washer are respectively installed at the lower end of the groove at the bottom of the upper connecting tube and the upper end of the groove at the top of the lower connecting tube; the rigid connector is a threaded rod, and a circular support plate is installed in the middle to divide the rigid connector into an upper connector and a lower connector, which are used to be screwed into the threaded grooves of the upper connecting tube and the lower connecting tube respectively.

2. The pipe pile connection device according to claim 1, characterized in that: The inner wall of the upper connecting tube is connected to the outer wall of the upper steel pipe pile by an adhesive; the inner wall of the lower connecting tube is connected to the outer wall of the lower steel pipe pile by an adhesive; The upper gasket is connected to the upper connecting tube via an adhesive, and the lower gasket is connected to the lower connecting tube via an adhesive.

3. The pipe pile connection device according to claim 1, characterized in that: After the installation is completed, the outer edge of the upper connecting tube, the outer edge of the circular supporting plate and the outer edge of the lower connecting tube are fixedly connected by welding.

4. The pipe pile connection device according to claim 1, characterized in that: The circular support plate is connected to the rigid connector as a whole.

5. The pipe pile connection device according to claim 1, characterized in that: The upper connector and the lower connector have the same length.

6. The pipe pile connection device according to claim 1, characterized in that: The diameter of the circular support plate is equal to the outer diameter of the pipe pile.

7. The pipe pile connection device according to claim 1, characterized in that: The thickness of the two ends of the thread groove is inconsistent. One end connected to the gasket is installed on the inner wall of the connecting tube, and a gap is left between the outer wall of the thread groove at the other end and the inner wall of the connecting tube.

8. The pipe pile connection device according to claim 7, characterized in that: The width of the gap is not less than the thickness of the steel pipe pile.

9. The pipe pile connection device according to claim 1, characterized in that: The outer walls of the upper connecting tube and the lower connecting tube are provided with detachable handles.

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