A prefabricated concrete cable well

Abstract

This utility model relates to the field of concrete cable well technology and discloses a prefabricated assembled concrete cable well, including: a main base plate and side base plates. Side base plates are provided on both sides of the middle of the main base plate. The main base plate and the side base plates form a cross-shaped base plate. Assembly positioning grooves are provided around the top edge of the main base plate and the side base plates. Corner wall plates are provided at the four corners of the cross-shaped base plate where the assembly positioning grooves are located. Second U-shaped wall plates are provided at both ends of the assembly positioning grooves at the top of the main base plate. The entire assembly process of the cable well is achieved by positioning through the positioning structure designed by the prefabricated component itself, without the need for bolts or other fasteners, thereby improving assembly efficiency and reducing the tediousness and time of assembly.

Description

Technical Field

[0001] This utility model relates to the field of concrete cable well technology, specifically a prefabricated assembled concrete cable well. Background Technology

[0002] Concrete cable wells are important underground structures used for laying, protecting and managing cables in the construction of power, communication and other infrastructure. They are usually made of reinforced concrete.

[0003] For example, Chinese Patent Publication No. CN110984227A discloses a prefabricated lightweight GFRP octagonal cable well and its construction method, including a cover plate, columns, cover plate supports, baffles, inverted T-shaped beams, and a base plate; eight inverted T-shaped beams are fixed on the base plate, and the eight inverted T-shaped beams are arranged in a regular octagon; columns are provided between adjacent two inverted T-shaped beams, and the grooves of the columns fit tightly with the inverted T-shaped beams; baffles are provided between adjacent two columns, and the bottom end of the baffle is fixed to the inverted T-shaped beam through a tongue-and-groove connection, and the top end of the baffle is fixed to the cover plate support through a tongue-and-groove connection; the cover plate is fixed to the cover plate support by bolts; this invention, by using lightweight GFRP material and prefabrication assembly method, not only meets the requirements of structural load-bearing and functional use, but also weighs only 1 / 3 to 1 / 2 of the weight of a traditional concrete cable well of the same size; at the same time, the construction efficiency is increased by more than 50% compared with traditional concrete cable wells, and it has the characteristics of being economical, convenient to transport, and easy to construct.

[0004] The above technical solution uses fasteners such as bolts for assembly when assembling concrete cable wells. The connection structure is complex, and each connection node needs to go through four processes: positioning, drilling, initial tightening, and final tightening. The assembly of a single well takes a lot of time. Utility Model Content

[0005] The purpose of this invention is to provide a prefabricated concrete cable well to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated assembled concrete cable well, comprising: a main base plate and side base plates, with side base plates provided on both sides of the middle of the main base plate, the main base plate and the side base plates forming a cross-shaped base plate, an assembly positioning groove provided around the top edge of the main base plate and the side base plates, corner wall plates provided at the four corners of the cross-shaped base plate, second U-shaped wall plates provided at both ends of the assembly positioning groove at the top of the main base plate, a first U-shaped wall plate provided in the assembly positioning groove at the top of the side base plates, a second top cover plate provided on the top of the second U-shaped wall plate, and a first top cover plate provided on the top of the first U-shaped wall plate.

[0007] Furthermore, a top beam is provided at the top of the corner wall panel, and a placement groove is provided at the top of the corner wall panel below the top beam. The top surface of the top beam is flush with the top surface of the corner wall panel.

[0008] Furthermore, the first top cover plate overlaps on both sides above the top beam, and the second top cover plate overlaps on one end above the top beam.

[0009] Furthermore, a first window is provided in the middle of the first U-shaped wall panel, and a first positioning baffle is provided on the top of the first U-shaped wall panel. The first positioning baffle is U-shaped, and the inner side of the first positioning baffle is attached to the outer wall of one end of the first top cover plate.

[0010] Furthermore, a second window is provided in the middle of the second U-shaped wall panel, and a second positioning baffle is provided on the top of the second U-shaped wall panel. The second positioning baffle is U-shaped, and the inner side of the second positioning baffle is attached to the outer wall of one end of the second top cover plate.

[0011] Furthermore, the first top cover plate has top positioning grooves on both sides of the top, the top positioning grooves are rectangular, the second top cover plate has a positioning block at one end that cooperates with the top positioning groove, the main bottom plate has a water seepage hole in the center, and the first top cover plate has top openings on both sides.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model, through the setting of a main base plate, assembly positioning grooves, and a top beam, achieves the following during the assembly of a precast concrete cable well: First, the main base plate and side base plates are laid flat at the bottom of the cable well hole. The main base plate and side base plates are positioned by aligning with the assembly positioning grooves. Then, four corner wall panels are inserted into the assembly positioning grooves. The corner wall panels support the top structure and stabilize the position between the main base plate and side base plates. At the same time, the corner wall panels, together with the assembly positioning grooves, can position the first U-shaped wall panel and the second U-shaped wall panel. Rectangular positioning grooves for connecting the first U-shaped wall panel and the second U-shaped wall panel are also provided on both sides of the corner wall panel. Through these positioning measures, the first U-shaped wall panel and the second U-shaped wall panel can be assembled stably. Then, the stability of the entire cable well is further increased by installing a top beam on top of the corner wall panels. Finally, the first top cover plate and the second top cover plate are assembled.

[0014] The entire assembly process of the cable well is achieved through the positioning structure designed in the prefabricated component itself, eliminating the need for bolts and other fasteners, thus improving assembly efficiency and reducing assembly complexity and time.

[0015] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0016] Figure 1 This is an exploded view of a prefabricated assembled concrete cable well according to this utility model;

[0017] Figure 2 This is a perspective view of a prefabricated assembled concrete cable well according to the present invention.

[0018] Figure 3 This is a top view of a prefabricated assembled concrete cable well according to the present invention.

[0019] Figure 4 This is a perspective view of a prefabricated concrete cable well according to this utility model.

[0020] In the diagram: 1. Main base plate; 2. Assembly positioning groove; 3. Side base plate; 4. Corner wall panel; 5. First U-shaped wall panel; 6. First window; 7. First positioning guard; 8. Second U-shaped wall panel; 9. Second window; 10. Second positioning guard; 11. Top beam; 12. First top cover plate; 13. Top opening; 14. Top positioning groove; 15. Second top cover plate; 16. Drainage hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a prefabricated assembled concrete cable well, comprising: a main base plate 1 and side base plates 3, with side base plates 3 located on both sides of the middle of the main base plate 1, forming a cross-shaped base plate. This cross-shaped layout maximizes the space utilization at the bottom of the cable well. The perpendicular intersection design of the main base plate 1 and the side base plates 3 disperses the foundation reaction force and avoids localized stress concentration. Assembly positioning grooves 2 are set around the top edge, providing a standardized positioning reference for subsequent wall panel installation.

[0023] The main base plate 1 and the side base plate 3 are provided with assembly positioning grooves 2 around the top edge. At the four corners of the cross-shaped base plate, corner wall panels 4 are provided. The corner wall panels 4 have an L-shaped cross-section design, and their bottom tenons mechanically engage with the assembly positioning grooves 2. Triangular reinforcing ribs can be provided at the corners to further increase the rigidity of the joints and effectively resist the torque generated by underground earth pressure. Second U-shaped wall panels 8 are provided at both ends of the assembly positioning grooves 2 at the top of the main base plate 1, and first U-shaped wall panels 5 are provided at the assembly positioning grooves 2 at the top of the side base plate 3. The second U-shaped wall panels 8 are arranged along the long side of the main base plate 1, and the first U-shaped wall panels 5 are arranged along the short side of the side base plate 3, forming a modular combination of two long and two short sections. A second top cover plate 15 is provided on top of the second U-shaped wall panels 8, and a first top cover plate 12 is provided on top of the first U-shaped wall panels 5.

[0024] A top beam 11 is provided at the top of the corner wall panel 4. A placement groove is opened at the top of the corner wall panel 4 below the top beam 11, and the top surface of the top beam 11 is flush with the top surface of the corner wall panel 4. The placement groove at the bottom of the top beam 11 has a depth of 50mm, forming a steel reinforcement anchorage connection with the pre-reserved steel bar ends at the top of the corner wall panel 4, with an anchorage length of up to 12 times the steel bar diameter. The flush top surface design makes the stress distribution of the cover plate more even. Finite element analysis has verified that this structure can reduce the mid-span deflection of the cover plate.

[0025] The first top cover plate 12 overlaps on both sides above the top beam 11, and the second top cover plate 15 overlaps on one end above the top beam 11.

[0026] The first U-shaped wall panel 5 has a first window 6 in the middle, and a first positioning baffle 7 at the top. The first positioning baffle 7 is U-shaped, and its inner side is fitted to the outer wall of one end of the first top cover plate 12. The second U-shaped wall panel 8 has a second window 9 in the middle, and a second positioning baffle 10 at the top. The second positioning baffle 10 is U-shaped, and its inner side is fitted to the outer wall of one end of the second top cover plate 15. The inner slope of the positioning baffle is set to 1:50, forming a self-positioning guide structure. When the first top cover plate 12 is lowered, the U-shaped groove of the positioning baffle 7 can automatically correct the installation deviation of ±3mm. A 0.5mm thick rubber sealing strip can be installed to improve the waterproof rating.

[0027] The first top cover plate 12 has top positioning grooves 14 on both sides of its top, and the top positioning grooves 14 are rectangular. The second top cover plate 15 has a positioning block at one end that matches the top positioning grooves 14. The main bottom plate 1 has a seepage hole 16 in the center, and the first top cover plate 12 has top openings 13 on both sides. The φ100 seepage hole in the center of the main bottom plate 1 is connected to a DN150 PVC drainage pipe at the bottom, with a slope of 2% to prevent the cable from being submerged for a long time.

[0028] When assembling a precast concrete cable well, the main base plate 1 and the side base plate 3 are first laid flat at the bottom of the cable well hole. The main base plate 1 and the side base plate 3 are positioned by aligning with the assembly positioning groove 2. Then, the four corner wall panels 4 are inserted into the assembly positioning groove 2. The corner wall panels 4 support the top structure and stabilize the position between the main base plate 1 and the side base plate 3. At the same time, the corner wall panels 4, together with the assembly positioning groove 2, can position the first U-shaped wall panel 5 and the second U-shaped wall panel 8. Rectangular positioning grooves for connecting the first U-shaped wall panel 5 and the second U-shaped wall panel 8 are also opened on both sides of the corner wall panels 4. Through these positioning measures, the first U-shaped wall panel 5 and the second U-shaped wall panel 8 can be assembled stably. Then, the stability of the entire cable well is further increased by installing a top beam 11 on the top of the corner wall panels 4. Finally, the first top cover plate 12 and the second top cover plate 15 are assembled.

[0029] The entire assembly process of the cable well is achieved through the positioning structure designed in the prefabricated component itself, eliminating the need for bolts and other fasteners, thus improving assembly efficiency and reducing assembly complexity and time.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A precast concrete cable well, comprising: The main base plate (1) and the side base plate (3) are characterized in that: the main base plate (1) is provided with side base plates (3) on both sides of the middle part, the main base plate (1) and the side base plate (3) form a cross-shaped base plate, the main base plate (1) and the side base plate (3) are provided with assembly positioning grooves (2) around the top edge, the assembly positioning grooves (2) are provided with corner wall plates (4) at the four corners of the cross-shaped base plate, the assembly positioning grooves (2) at the top of the main base plate (1) are provided with second U-shaped wall plates (8) at both ends, the assembly positioning grooves (2) at the top of the side base plate (3) are provided with first U-shaped wall plates (5), the second U-shaped wall plates (8) are provided with second top cover plates (15) at the top, and the first U-shaped wall plates (5) are provided with first top cover plates (12).

2. The precast assembled concrete cable well according to claim 1, characterized in that: The corner wall panel (4) is provided with a top beam (11) at the top. The corner wall panel (4) is provided with a placement groove below the top beam (11) at the top. The top surface of the top beam (11) is flush with the top surface of the corner wall panel (4).

3. A precast assembled concrete cable well according to claim 2, characterized in that: The first top cover plate (12) overlaps on both sides above the top beam (11), and the second top cover plate (15) overlaps on one end above the top beam (11).

4. A precast assembled concrete cable well according to claim 1, characterized in that: The first U-shaped wall panel (5) has a first window (6) in the middle and a first positioning baffle (7) on the top of the first U-shaped wall panel (5). The first positioning baffle (7) is U-shaped and the inner side of the first positioning baffle (7) is attached to the outer wall of one end of the first top cover plate (12).

5. A precast assembled concrete cable well according to claim 4, characterized in that: The second U-shaped wall panel (8) has a second window (9) in the middle and a second positioning baffle (10) on the top of the second U-shaped wall panel (8). The second positioning baffle (10) is U-shaped and the inner side of the second positioning baffle (10) is attached to the outer wall of one end of the second top cover plate (15).

6. A precast assembled concrete cable well according to claim 1, characterized in that: The first top cover plate (12) has top positioning grooves (14) on both sides of the top. The top positioning grooves (14) are rectangular. The second top cover plate (15) has a positioning block at one end that cooperates with the top positioning grooves (14). The main bottom plate (1) has a water seepage hole (16) in the center. The first top cover plate (12) has top openings (13) on both sides.

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