Connecting device for connecting prefabricated pipe pile with prefabricated cover beam
By designing a connection device for connecting precast pipe piles to precast cap beams, and using bolt connections instead of welding, the problems of high construction difficulty and unstable quality of welding precast cap beams and pipe piles were solved, thereby improving construction efficiency and enhancing the stability and safety of the structure.
Patent Information
- Application Number
- CN202520115043.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In existing technologies, the welding construction of precast cap beams and pipe piles is difficult, the welding quality is unstable, and it is easy to cause uneven heating and cracking of concrete, which affects durability and safety.
The connection device that uses precast pipe piles to connect precast cap beams uses bolt connections instead of welding through the design of cylindrical and flat sections. Combined with reinforcing ribs and bottom steel plates, it forms a "cap" structure to bear the load and avoid welding.
It improves construction efficiency, reduces potential welding quality issues, enhances the stability and durability of connections, and improves the safety of pile-slab structures.
Smart Images
Figure CN223907327U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge engineering technical field, concretely relates to a kind of connecting device of prefabricated pipe pile connecting prefabricated bent cap. BACKGROUND
[0002] Pile-slab subgrade is formed by laying prefabricated beam slab on pile array after piling, compared with traditional subgrade, this kind of pile-slab subgrade has the advantages of environmental protection and energy saving, fast construction speed, low cost, land saving, etc. without excavating earthwork to pad subgrade. Pile-slab subgrade contains two kinds of pipe piles, one is continuous pier, and the other is transition pier. The top of continuous pier adopts consolidation form, and the transition pier only bears vertical gravity on the top beam slab and the poured road, without bearing horizontal shear force. This kind of transition pier is set to enable the road to stretch and contract laterally.
[0003] The transition pier top is provided with a bent cap, the bottom of the bent cap is welded with the pipe pile end plate through embedded steel plate, the bridge slab is placed on the small bent cap, and rectangular sliding plate rubber bearing is arranged between the bent cap and the beam slab, as shown in the accompanying Figure 1 In practice, the applicant found that the bent cap is generally located at a position 5-6 meters away from the ground, and the pipe pile is welded with the embedded steel plate at the bottom of the bent cap, which is an overhead welding, with great construction difficulty, unstable welding quality, and the welding position is close to the small bent cap concrete, which is easy to cause uneven heating of the concrete and internal reinforcement, causing the small bent cap concrete to crack due to heating. CONTENT OF THE UTILITY MODEL
[0004] The utility model provides a kind of connecting device of prefabricated pipe pile connecting prefabricated bent cap to solve the technical problem that pile-slab structure transition pier prefabricated bent cap welding construction is difficult, durability and safety are poor.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A kind of connecting device of prefabricated pipe pile connecting prefabricated bent cap is designed, including cylindrical portion and flat plate portion, the flat plate portion is fixed at the top end of the cylindrical portion, cylindrical portion and flat plate portion are both center-symmetrical structure and the symmetry center coincides, the cylindrical portion is sleeved at the top end of the prefabricated pipe pile, the diameter of cylindrical portion and prefabricated pipe pile are matched, the upper surface of the flat plate portion is provided with connecting plate, the connecting plate and the prefabricated bent cap are attached, and the connecting plate and the prefabricated bent cap are fixedly connected by bolt.
[0007] Further, reinforcing rib plate is connected between the cylindrical portion and the flat plate portion.
[0008] Furthermore, the connecting plate is an angle steel, with the horizontal surface of the angle steel fixedly connected to the top surface of the flat plate, and the vertical surface of the angle steel attached to the precast cap beam.
[0009] Furthermore, the cylindrical part is provided with fixing holes, and screws are installed in the fixing holes to reinforce the connection between the cylindrical part and the precast pipe pile.
[0010] Furthermore, a support pad is provided on the top of the precast cap beam, and a sliding rubber support is provided on the support pad.
[0011] Furthermore, the flat plate is a rectangular steel structure.
[0012] Furthermore, the plate portion has a through hole at its center, the diameter of which is the same as the inner through hole diameter of the precast pipe pile.
[0013] Furthermore, a mounting hole is provided on the periphery of the through hole, which is used to install mounting bolts for connecting the precast pipe pile.
[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0015] 1. This utility model uses a "pipe pile + bottom steel plate" to support the small cap beam, and connects the bottom steel plate and the small cap beam with bolts, which greatly increases the stability.
[0016] 2. This utility model uses a "cap" type bottom steel plate to calculate the load-bearing force on the upper part of the pipe-jointing steel pipe and make it so that the upper precast beam can be supported by the pipe pile and the bottom steel plate alone, so that the beam can be erected normally and the next process can be carried out. This can greatly improve construction efficiency, reduce the welding quality risks at the connection between the precast cap beam and the pipe pile, and increase the durability and safety of the pile-slab structure. Attached Figure Description
[0017] Figure 1 This refers to the connection structure between precast pipe piles and precast cap beams in existing technologies.
[0018] Figure 2 This refers to the connection structure between the precast pipe piles and the precast cap beams in this application.
[0019] Figure 3 This is a schematic diagram of the connecting device in this application.
[0020] Figure 4 for Figure 3 A bottom view.
[0021] In the figure, 1 is the cylindrical part, 2 is the flat plate part, 3 is the precast pipe pile, 4 is the connecting plate, 5 is the precast cap beam, 6 is the bolt, 7 is the reinforcing rib plate, 8 is the fixing hole, 9 is the through hole, 10 is the mounting hole, 11 is the supporting pad stone, 12 is the sliding rubber bearing, and 13 is the bridge plate. DETAILED DESCRIPTION
[0022] The specific embodiments of the present application will be described below in conjunction with the accompanying drawings and examples, but the following examples are only used to illustrate the present application in detail, and do not limit the scope of the present application in any way.
[0023] In the embodiment, the tubular part 1 and the flat plate part 2 are both center-symmetrical structures and the symmetry centers coincide, the tubular part 2 is used to be sleeved on the top end of the prefabricated pipe pile 3, and the diameter of the tubular part 1 matches the prefabricated pipe pile 3 after being sleeved and will not be loose. The upper surface of the flat plate part 2 is provided with a connecting plate 4, the connecting plate 4 and the prefabricated cap beam 5 are attached, and the connecting plate 4 and the prefabricated cap beam 5 are fixedly connected through bolts. The connecting plate 4 uses an angle steel, the horizontal plane of the angle steel is welded and fixed with the top surface of the flat plate part 2, and the vertical plane of the angle steel is connected with the prefabricated cap beam 5 through bolts 6.
[0024] The tubular part 1 and the flat plate part 2 are connected with a reinforcing rib plate 7, which can improve the carrying capacity of the flat plate part 2. The tubular part 1 is provided with a fixing hole 8, and a screw is installed in the fixing hole 8 to reinforce the connection between the tubular part 1 and the prefabricated pipe pile 3. The flat plate part 2 is a square steel structure, and the flat plate part 2 has a through hole 9 at the center, the diameter of the through hole 9 is the same as the inner through hole diameter of the prefabricated pipe pile 3. The through hole 9 is provided with a mounting hole 10 on the circumferential side, and the mounting hole 10 is used to set the mounting bolt for connecting the prefabricated pipe pile 3.
[0025] In use, the tubular part 1 of the device is sleeved on the prefabricated pipe pile 3, the connecting plate 4 and the prefabricated cap beam 5 are fixed by the bolts 6, the prefabricated cap beam 5 is provided with a support cushion stone 11 on the top, the support cushion stone 11 is provided with a sliding plate type rubber support 12, and a prefabricated bridge plate 13 is arranged on the sliding plate type rubber support 12. The prefabricated cap beam 5 is supported in the form of "pipe pile + bottom supporting steel plate", which replaces the welding between the pipe pile and the cap beam in the prior art. The "brim" type bottom supporting steel plate is made by calculating the load bearing force of the upper part of the pile connecting steel pipe, so that only the pipe pile and the bottom supporting steel plate can bear the upper prefabricated beam plate, the normal beam is erected, and the next process is carried out, which can greatly improve the construction efficiency, reduce the welding quality hidden danger of the connection between the prefabricated cap beam and the pipe pile, and increase the durability and safety of the pile plate structure.
[0026] The present application has been described in detail above in conjunction with the accompanying drawings and examples, but those skilled in the art can understand that various specific parameters in the above examples can be changed without departing from the purpose of the present application, forming multiple specific examples, which are all within the common variation range of the present application, and will not be described in detail here.
Claims
1. A connection device for connecting precast pipe piles to precast cap beams, characterized in that: The utility model relates to a prefabricated pipe pile cover beam fixing device, including the cylindrical portion and the flat plate portion, the flat plate portion is fixed in the top of cylindrical portion, and the cylindrical portion and the flat plate portion are all center symmetry structure and the symmetry center coincides, the cylindrical portion is sleeved in the top of prefabricated pipe pile, and the diameter of cylindrical portion and prefabricated pipe pile match, the upper surface of flat plate portion is provided with the connecting plate, the connecting plate and prefabricated cover beam are attached and are provided, and the connecting plate and prefabricated cover beam are fixedly connected through bolt.
2. The connecting device for connecting the precast pile with the precast cap beam according to claim 1, characterized in that: The cylindrical portion and the flat plate portion are connected with a reinforcing rib plate.
3. The connecting device for connecting the precast pile with the precast cap beam according to claim 1, characterized in that: The connecting plate is an angle steel, the horizontal plane of the angle steel is fixedly connected with the top surface of the flat plate portion, and the vertical plane of the angle steel is attached with the prefabricated cover beam.
4. The connecting device for connecting the precast pile with the precast cap beam according to claim 1, characterized in that: The cylindrical portion is provided with a fixing hole, and a screw is installed in the fixing hole to reinforce the connection between the cylindrical portion and the prefabricated pipe pile.
5. The connecting device for connecting the precast pile with the precast cap beam according to claim 1, characterized in that: The top of the prefabricated cover beam is provided with a support cushion stone, and the support cushion stone is provided with a sliding plate type rubber support.
6. The connecting device for connecting precast pile with precast cap beam according to claim 1, wherein: The flat plate portion is a rectangular steel structure.
7. The connecting device for connecting the precast pile with the precast cap beam according to claim 1, characterized in that: The flat plate portion has a through hole at the center, and the diameter of the through hole is the same as the inner diameter of the prefabricated pipe pile.
8. The connecting device for connecting the precast pile with the precast cap beam according to claim 7, characterized in that: The periphery of the through hole is provided with a mounting hole for mounting the mounting bolt connected with the prefabricated pipe pile.