Fabricated station structure of cast-in-place bottom plate

Abstract

The invention relates to the technical field of assembly type subway construction, and discloses a cast-in-place bottom plate assembly type station structure which comprises a lower assembly block and an upper assembly block, a left inclined groove is formed in the top of the lower assembly block, a right inclined groove is formed in the bottom of the upper assembly block, and the left inclined groove and the right inclined groove are connected in a clamped mode. A left inclined groove is formed in the top of the upper assembling block, a right inclined groove is formed in the bottom of the upper assembling block, a second clamping block is slidably connected between the left inclined groove and the right inclined groove, an assembling top block is arranged at the top of the upper assembling block, a splicing block is fixedly connected to the bottom of the assembling top block, a splicing groove is formed in the top of the upper assembling block, the splicing groove and the splicing block are connected in a clamped mode, and fixing assemblies are arranged on the two sides of the upper assembling block. Under the action of a lower assembling block, an upper assembling block, a second clamping block, a fastening bolt, an upper connecting plate and a lower connecting plate, the lower assembling block and the upper assembling block can be conveniently and fixedly connected, then the lower assembling block and the upper assembling block can be conveniently and rapidly spliced and installed, the whole station is rapidly spliced, and then the labor intensity of operators is relieved.

Description

Technical Field

[0001] The present invention relates to the technical field of assembled subway construction, and specifically to an assembled station structure with a cast-in-place bottom slab. Background Art

[0002] In the construction of rail transit, the station structure is an important part of underground or elevated rail lines, undertaking various functions such as passenger entry and exit, waiting, transfer, evacuation, and safety protection; the station is not only a node for trains to stop, but also the core hub of the entire rail transit system, directly affecting the operation efficiency and passenger experience. According to the line design requirements, stations can be divided into underground stations, elevated stations, and ground stations, among which underground stations are widely used due to the shortage of urban land resources.

[0003] The traditional construction method of underground stations mainly uses cast-in-place concrete structures. This construction method forms a whole stable structural system through a series of processes such as on-site formwork erection, steel bar binding, concrete pouring, and curing. During the construction process, it is first necessary to set up a support system and formwork to ensure that the structural shape meets the design requirements and provide the necessary support force to prevent deformation or collapse during concrete pouring. Subsequently, workers bind steel bars according to the construction specifications to ensure that the mechanical properties of the steel bar framework meet the design standards, so as to improve the compressive, tensile, and seismic resistance of the station.

[0004] In the prior art, although cast-in-place concrete structures are adopted and the compressive, tensile, and seismic resistance of the station are ensured by setting up a support system and formwork, there are still many deficiencies in the actual application of this construction method; firstly, the cast-in-place construction process is complex and the cycle is long, and it needs to go through multiple links such as formwork erection, steel bar binding, concrete pouring, vibration compaction, formwork removal, and curing. Each link is affected by factors such as weather, construction environment, and material supply, resulting in limited overall construction progress. Secondly, the workload of setting up and removing the formwork and support system is large. Especially in the underground construction environment, due to space limitations, the operation difficulty of formwork construction is high, and a large amount of labor is required for reinforcement and adjustment, increasing the construction cost. Moreover, the pouring and curing time of concrete is long. Especially in low-temperature or high-humidity environments, the strength growth of concrete is slow, further prolonging the construction cycle. In addition, due to the large-scale wet operation required for traditional cast-in-place construction on site, it has a greater impact on the surrounding environment, generating more noise, dust, and construction waste, which is not conducive to the rapid progress of urban rail transit projects in densely populated areas. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an assembled station structure with a cast-in-place bottom slab, which solves the problems in the prior art that cast-in-place construction is usually adopted, resulting in complex processes, long cycles, and the need to go through multiple links such as formwork erection, steel bar binding, concrete pouring, vibration compaction, formwork removal, and curing.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: a prefabricated station structure with a cast-in-place bottom slab, including a lower assembly block and an upper assembly block. A left inclined groove is provided at the top of the lower assembly block, and a right inclined groove is provided at the bottom of the upper assembly block. The left inclined groove and the right inclined groove are clamped with each other, and a second clamping block is slidably connected between the left inclined groove and the right inclined groove. An assembly top block is provided at the top of the upper assembly block, and a splicing block is fixedly connected to the bottom of the assembly top block. A splicing groove is provided at the top of the upper assembly block, and the splicing groove and the splicing block are clamped with each other. Fixed components are provided on both sides of the upper assembly block for further fixing the upper assembly block and the assembly top block.

[0007] Preferably, the fixed component includes a lower connecting plate. There are multiple lower connecting plates, and the multiple lower connecting plates are respectively fixedly connected to both sides of the upper assembly block. An upper connecting plate is fixedly connected to the bottom of the assembly top block. Multiple fastening bolts are provided in the middle of the lower connecting plate, and the multiple fastening bolts are used to connect and fix the lower connecting plate and the upper connecting plate.

[0008] Preferably, lower fixing plates are fixedly connected to both sides of the lower assembly block, and upper fixing plates are fixedly connected to both sides of the bottom of the upper assembly block. Multiple connecting bolts are provided in the middle of the upper fixing plate, and the multiple connecting bolts are used to connect and fix the upper fixing plate and the connecting bolts.

[0009] Preferably, there are multiple upper assembly blocks. A first clamping block is fixedly connected to one side of one of the upper assembly blocks, and a clamping groove is provided on one side of another upper assembly block. The clamping groove and the first clamping block are clamped with each other.

[0010] Preferably, a first connecting plate is fixedly connected to one side of one of the upper assembly blocks away from the first clamping block, and a second connecting plate is fixedly connected to one side of another upper assembly block away from the clamping groove.

[0011] Preferably, multiple screw rods are provided in the middle of the first connecting plate, and multiple nuts are fixedly connected to the side of the second connecting plate away from the first connecting plate. The screw rods and the nuts are threadedly connected.

[0012] Preferably, the assembly top block is integrally arc-shaped for guiding rainwater. Drainage plates are fixedly connected to both sides of the assembly top block, and the drainage plates are used for discharging and storing rainwater.

[0013] Preferably, connecting blocks are fixedly connected to both sides of the lower assembly block, and grooves are provided in the middle of the connecting blocks. The grooves are used for inserting prefabricated threaded rods, and the lower assembly block can be connected and fixed through the action of the threaded rods and the connecting blocks.

[0014] The present invention also provides a construction method for an assembled station structure with a cast-in-place bottom slab, including the following steps:

[0015] S1. Positioning and installing the lower assembly block: First, place the lower assembly block on the foundation to ensure its accurate position, and connect and fix the lower assembly block to the foundation through the connecting block and the threaded rod;

[0016] S2. Connecting the upper assembly block and the lower assembly block: Place the upper assembly block on the lower assembly block, and insert and fix the connection of the two through the mutual clamping of the left inclined groove and the right inclined groove and the insertion of the second clamping block;

[0017] S3. Installing the assembled top block and the splicing block: On the top of the upper assembly block, snap the splicing block into the splicing groove, and then install the assembled top block on the upper assembly block, and tightly connect them through the lower connecting plate and the upper connecting plate;

[0018] S4. Fixing the side plate and the connecting bolt: Install the lower fixing plate on both sides of the lower assembly block, fix the upper fixing plate on both sides of the bottom of the upper assembly block, and connect the upper fixing plate and the lower fixing plate through the connecting bolt;

[0019] S5. Clamping and fixing the connecting plate: Install the first clamping block and the clamping groove on both sides of the upper assembly block respectively to make their connection tight. Then, install the first connecting plate and the second connecting plate, and connect them through the screw and the nut;

[0020] S6. Installing the water baffle and checking the connection: Fix the water baffle on both sides of the assembled top block to ensure that rainwater can be discharged smoothly. Finally, check all the connecting components to complete the construction.

[0021] The present invention provides an assembled station structure with a cast-in-place bottom slab. It has the following beneficial effects:

[0022] 1. By opening inclined grooves on the lower assembly block and the upper assembly block, the present invention enables the lower assembly block and the upper assembly block to be conveniently connected and fixed through the action of the second clamping block after splicing, thereby facilitating the quick splicing and installation of the lower assembly block and the upper assembly block. At the same time, through the action of the splicing block and the splicing groove, the upper assembly block and the assembled top block can be quickly aligned during splicing, thus facilitating the assembly of the assembled top block. When the assembled top block is assembled, it is convenient to align the upper connecting plate and the lower connecting plate, so that the assembled top block can be further fixed through the action of multiple fastening bolts, and the lower assembly block and the upper assembly block can be conveniently connected and fixed through the action of multiple connecting bolts, enabling the quick splicing into the overall station, thereby reducing the labor intensity of the operators, improving the work efficiency, and enhancing the overall applicability of the station.

[0023] 2. With the action of multiple first clamping blocks and multiple clamping grooves, the present invention can facilitate the alignment and splicing of multiple lower assembly blocks and multiple upper assembly blocks. After the splicing of multiple lower assembly blocks and multiple lower assembly blocks, and multiple upper assembly blocks and multiple upper assembly blocks is completed, the first connecting plate and the second connecting plate can be aligned. When the first connecting plate and the second connecting plate are aligned, the first connecting plate and the second connecting plate can be connected by screws, and after the screw connection is completed, it can be fixed by nuts, which can facilitate the operation of the operator, and thus can facilitate and quickly build the station, while improving the work efficiency.

[0024] 3. With the action of the assembly top block, the present invention can facilitate the guidance of rainwater. When the rainwater is guided, it will enter the middle of the water baffle, and thus, with the action of multiple water baffles, the rainwater can be guided and discharged, thereby preventing a large amount of rainwater from affecting the overall station, further improving the overall applicability of the station, and at the same time preventing the rainwater from corroding the station, making the overall station more solid. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional view of the present invention;

[0026] Figure 2 is a schematic diagram of the splicing block of the present invention;

[0027] Figure 3 is a schematic diagram of the splicing groove of the present invention;

[0028] Figure 4 is a schematic diagram of the water baffle of the present invention;

[0029] Figure 5 is a schematic diagram of the first clamping block of the present invention;

[0030] Figure 6 is a schematic diagram of the first connecting plate of the present invention;

[0031] Figure 7 is Figure 2 an enlarged view of part A in

[0032] Figure 8 is a flowchart of the method of the present invention.

[0033] Among them, 1. Lower assembly block; 2. Connecting block; 3. Upper assembly block; 4. Assembly top block; 5. Water baffle; 6. First clamping block; 7. Splicing block; 8. Upper connecting plate; 9. Lower connecting plate; 10. Fastening bolt; 11. Splicing groove; 12. Upper fixing plate; 13. Lower fixing plate; 14. Connecting bolt; 15. Second clamping block; 16. First connecting plate; 17. Screw; 18. Second connecting plate; 19. Nut; 20. Clamping groove. DETAILED DESCRIPTION OF THE INVENTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the specification of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Embodiment:

[0036] Please refer to the attached Figure 1 and the attached Figure 3 and the attached Figure 5 In the embodiment of the present invention, a prefabricated station structure for a cast-in-place floor slab is provided, which includes a lower assembly block 1 and an upper assembly block 3. A left inclined groove is provided at the top of the lower assembly block 1, and a right inclined groove is provided at the bottom of the upper assembly block 3. The left inclined groove and the right inclined groove are clamped together. A second clamping block 15 is slidably connected between the left inclined groove and the right inclined groove. An assembly top block 4 is provided at the top of the upper assembly block 3. A splicing block 7 is fixedly connected to the bottom of the assembly top block 4. A splicing groove 11 is provided at the top of the upper assembly block 3, and the splicing groove 11 is clamped with the splicing block 7. Fixed components are provided on both sides of the upper assembly block 3 for further fixing the upper assembly block 3 and the assembly top block 4.

[0037] The right inclined groove and the left inclined groove are more convenient for the lower assembly block 1 and the upper assembly block 3 to be spliced. At the same time, in the right inclined groove and the left inclined groove, the lower assembly block 1 and the upper assembly block 3 can be connected more tightly. And under the action of the right inclined groove and the left inclined groove, a square groove can be formed, so that the second clamping block 15 can be inserted into the connection part of the right inclined groove and the left inclined groove, preventing the right inclined groove and the left inclined groove from shifting and disengaging, and further facilitating further fixing, making the overall structure of the station more stable.

[0038] Please refer to the attached Figure 3 and the attached Figure 4 The fixed component includes a lower connecting plate 9. There are multiple lower connecting plates 9, and the multiple lower connecting plates 9 are respectively fixedly connected to both sides of the upper assembly block 3. An upper connecting plate 8 is fixedly connected to the bottom of the assembly top block 4. A plurality of fastening bolts 10 are provided in the middle of the lower connecting plate 9, and the plurality of fastening bolts 10 are used to connect and fix the lower connecting plate 9 and the upper connecting plate 8.

[0039] The lower connecting plate 9 and the upper connecting plate 8 can conveniently connect and fix the upper assembly block 3 and the assembly top block 4, and the multiple fastening bolts 10 can conveniently further fix the lower connecting plate 9 and the upper connecting plate 8, making the overall structure of the station more firm through the threaded connection method.

[0040] Please refer to the attached Figure 4 and the attached Figure 5, on both sides of the lower assembly block 1, there are fixedly connected lower fixing plates 13. On both sides of the bottom of the upper assembly block 3, there are fixedly connected upper fixing plates 12. In the middle of the upper fixing plates 12, there are multiple connecting bolts 14, and the multiple connecting bolts 14 are used to connect and fix the upper fixing plates 12 and the connecting bolts 14.

[0041] The lower fixing plates 13 and the upper fixing plates 12 can facilitate the further connection and fixation of the lower assembly block 1 and the upper assembly block 3, and the multiple connecting bolts 14 can facilitate the further fixation of the connected lower fixing plates 13 and upper fixing plates 12, thereby reducing the labor intensity of the staff and improving the work efficiency.

[0042] Please refer to the appendix Figure 7 , there are multiple upper assembly blocks 3. On one side of one of the upper assembly blocks 3, there is fixedly connected a clamping block one 6. On one side of the other upper assembly block 3, there is a clamping groove 20 opened, and the clamping groove 20 is clamped with the clamping block one 6.

[0043] The clamping block one 6 and the clamping groove 20 can facilitate the splicing of multiple upper assembly blocks 3 and multiple lower assembly blocks 1, thus facilitating the installation operation of the staff, reducing the labor intensity of the staff, and improving the work efficiency at the same time.

[0044] Please refer to the appendix Figure 6 , appendix Figure 7 and appendix Figure 2 , on one side of one of the upper assembly blocks 3 far from the clamping block one 6, there is fixedly connected an adapter plate one 16. On one side of the other upper assembly block 3 far from the clamping groove 20, there is fixedly connected an adapter plate two 18; in the middle of the adapter plate one 16, there are multiple screw rods 17. On the side of the adapter plate two 18 far from the adapter plate one 16, there are fixedly connected multiple nuts 19, and the screw rods 17 are threadedly connected with the nuts 19.

[0045] The adapter plate one 16 and the adapter plate two 18 can facilitate the staff to connect and fix multiple upper assembly blocks 3; and the screw rods 17 and the nuts 19 can facilitate the further fixation after the connection of the adapter plate one 16 and the adapter plate two 18, so that the whole station is more firm.

[0046] Please refer to the appendix Figure 1 , the assembled top block 4 is arc-shaped as a whole for guiding rainwater. On both sides of the assembled top block 4, there are fixedly connected water baffle plates 5, and the water baffle plates 5 are used for discharging and storing rainwater; on both sides of the lower assembly block 1, there are fixedly connected connecting blocks 2. In the middle of the connecting blocks 2, there are grooves for inserting prefabricated threaded rods, and the lower assembly block 1 can be connected and fixed through the action of the threaded rods and the connecting blocks 2.

[0047] The assembled top block 4 can facilitate the guidance of rainwater, allowing the rainwater to enter the middle of the water baffle 5, and the water baffle 5 can guide and drain the rainwater, thereby preventing a large amount of rainwater from affecting the overall station, further improving the overall applicability of the station, and at the same time preventing the rainwater from corroding the station, making the overall station more solid.

[0048] The construction method of the precast station structure with a cast-in-place bottom slab described below can be mutually corresponding and referred to the precast station structure with a cast-in-place bottom slab described above.

[0049] Please refer to the attached Figure 8 , the present invention also provides a construction method for a precast station structure with a cast-in-place bottom slab, including the following steps:

[0050] S1. Positioning and installing the lower assembly block 1: First, place the lower assembly block 1 on the foundation to ensure its accurate position, and connect and fix the lower assembly block 1 to the foundation through the connecting block 2 and the threaded rod.

[0051] S2. Connecting the upper assembly block 3 and the lower assembly block 1: Place the upper assembly block 3 on the lower assembly block 1, and insert and fix the connection of the two by the mutual clamping of the left inclined groove and the right inclined groove and inserting the second clamping block 15.

[0052] S3. Installing the assembled top block 4 and the splicing block 7: On the top of the upper assembly block 3, clamp the splicing block 7 with the splicing groove 11, and then install the assembled top block 4 on the upper assembly block 3, and tightly connect them through the lower connecting plate 9 and the upper connecting plate 8.

[0053] S4. Fixing the side plates and connecting bolts: Install the lower fixing plates 13 on both sides of the lower assembly block 1, fix the upper fixing plates 12 on both sides of the bottom of the upper assembly block 3, and connect the upper fixing plate and the lower fixing plate through the connecting bolts 14.

[0054] S5. Clamping and fixing the connecting plates: Install the first clamping block 6 and the clamping groove 20 on both sides of the upper assembly block 3 respectively to make their connection tight. Then, install the first connecting plate 16 and the second connecting plate 18, and connect them by threading through the screw 17 and the nut 19.

[0055] S6. Installing the water baffle and checking the connection: Fix the water baffle 5 on both sides of the assembled top block 4 to enable the smooth drainage of rainwater. Finally, check all the connecting components to complete the construction.

[0056] The construction method of this embodiment can be used to implement the above device embodiment, and its principle and technical effects are similar, so they will not be elaborated here.

[0057] Working principle: When connecting and fixing the lower assembly block 1 and the upper assembly block 3, the inclined slots opened in the lower assembly block 1 and the upper assembly block 3 are aligned. After the inclined slots are aligned, the lower assembly block 1 and the upper assembly block 3 can be connected. After the lower assembly block 1 and the upper assembly block 3 are connected, the second clamping block 15 can be inserted into the connection part of the lower assembly block 1 and the upper assembly block 3, so as to assemble the lower assembly block 1 and the upper assembly block 3. After the lower assembly block 1 and the upper assembly block 3 are assembled, the upper fixing plate 12 and the lower fixing plate 13 are automatically aligned. After the upper fixing plate 12 and the lower fixing plate 13 are aligned, they can be connected and fixed by the action of a plurality of connecting bolts 14, so as to further fix the lower assembly block 1 and the upper assembly block 3.

[0058] When connecting and fixing the upper assembly block 3 and the assembly top block 4, the splicing block 7 and the splicing groove 11 are aligned. After the splicing block 7 and the splicing groove 11 are aligned, the upper assembly block 3 and the assembly top block 4 are spliced, so that the splicing block 7 slides into the middle of the splicing groove 11. After the splicing block 7 slides into the middle of the splicing groove 11, the upper connecting plate 8 and the lower connecting plate 9 are automatically aligned. After the upper connecting plate 8 and the lower connecting plate 9 are aligned, they can be connected and fixed by a plurality of fastening bolts 10, so as to further connect and fix the upper assembly block 3 and the assembly top block 4.

[0059] Through the shape of the assembly top block 4, rainwater can be guided in rainy days, so that the rainwater is guided to the middle of the water baffle 5. Under the action of a plurality of water baffles 5, the rainwater can be guided to both sides for drainage. At the same time, under the action of a plurality of water baffles 5, the rainwater can be collected and stored, so that resources can be recycled.

[0060] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled station structure with a cast-in-place base plate, comprising a lower assembly block (1) and an upper assembly block (3), characterized in that: The lower assembly block (1) has a left oblique groove at the top, and the upper assembly block (3) has a right oblique groove at the bottom. The left oblique groove and the right oblique groove are snap-fitted to each other. A snap-fit ​​block 2 (15) is slidably connected between the left oblique groove and the right oblique groove. The upper assembly block (3) has an assembly top block (4) at the top, and a splicing block (7) is fixedly connected to the bottom of the assembly top block (4). The upper assembly block (3) has a splicing groove (11) at the top, and the splicing groove (11) and the splicing block (7) are snap-fitted to each other. Both sides of the upper assembly block (3) are provided with fixing components for further fixing the upper assembly block (3) and the assembly top block (4).

2. The assembled station structure with cast-in-place floor according to claim 1 is characterized in that: The fixing assembly comprises a lower connecting plate (9), and a plurality of the lower connecting plates (9) are provided. The plurality of the lower connecting plates (9) are respectively fixedly connected to two sides of the upper assembly block (3); the bottom of the assembly top block (4) is fixedly connected to an upper connecting plate (8); a plurality of fastening bolts (10) are provided in the middle of the lower connecting plate (9), and the plurality of the fastening bolts (10) are used to connect and fix the lower connecting plate (9) and the upper connecting plate (8).

3. The assembled station structure with cast-in-place floor according to claim 1 is characterized in that: The lower assembly block (1) is fixedly connected to lower fixing plates (13) on both sides, and the upper assembly block (3) is fixedly connected to upper fixing plates (12) on both sides of its bottom. A plurality of connecting bolts (14) are provided in the middle of the upper fixing plate (12). The plurality of connecting bolts (14) are used to connect and fix the upper fixing plate (12) and the connecting bolts (14).

4. The assembled station structure with cast-in-place floor according to claim 1 is characterized in that: A plurality of upper assembly blocks (3) are provided, one side of one of the upper assembly blocks (3) being fixedly connected to a first clamping block (6), and one side of another upper assembly block (3) being provided with a clamping groove (20), the clamping groove (20) being clamped to the first clamping block (6).

5. The assembled station structure with cast-in-place floor according to claim 4 is characterized in that: A connecting plate 1 (16) is fixedly connected to one side of the upper assembly block (3) away from the clamping block 1 (6), and a connecting plate 2 (18) is fixedly connected to the other side of the upper assembly block (3) away from the clamping groove (20).

6. The assembled station structure with cast-in-place floor according to claim 5 is characterized in that: A plurality of screw rods (17) are arranged in the middle of the connecting plate 1 (16), and a plurality of nuts (19) are fixedly connected to a side of the connecting plate 2 (18) away from the connecting plate 1 (16), and the screw rods (17) and the nuts (19) are threadedly connected.

7. The assembled station structure with cast-in-place floor according to claim 1 is characterized in that: The assembled top block (4) is in an arc shape as a whole and is used to guide rainwater. Water retaining plates (5) are fixedly connected to both sides of the assembled top block (4), and the water retaining plates (5) are used to discharge and store rainwater.

8. The assembled station structure with cast-in-place floor according to claim 1, characterized in that: Both sides of the lower assembly block (1) are fixedly connected to connection blocks (2), and a groove is provided in the middle of the connection block (2), and the groove is used to insert a prefabricated threaded rod. The lower assembly block (1) can be connected and fixed by the action of the threaded rod and the connection block (2).

9. A construction method for a prefabricated station structure with a cast-in-place bottom plate, applied to the prefabricated station structure with a cast-in-place bottom plate according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Positioning and installing the lower assembly block (1): firstly, place the lower assembly block (1) on the foundation to ensure that it is positioned accurately, and then connect and fix the lower assembly block (1) to the foundation through the connecting block (2) and the threaded rod; S2, connecting the upper assembly block (3) and the lower assembly block (1): placing the upper assembly block (3) on the lower assembly block (1), and inserting the second clamping block (15) to fix the connection between the two by mutually clamping the left oblique groove and the right oblique groove; S3, installing the assembly top block (4) and the splicing block (7): at the top of the upper assembly block (3), the splicing block (7) is snap-fitted into the splicing groove (11), and then the assembly top block (4) is installed on the upper assembly block (3), and is fastened and connected via the lower connecting plate (9) and the upper connecting plate (8); S4, fixing the side plates and connecting bolts: installing the lower fixing plates (13) on both sides of the lower assembly block (1), fixing the upper fixing plates (12) on both sides of the bottom of the upper assembly block (3), and connecting the upper fixing plates and the lower fixing plates by connecting bolts (14); S5. Snap-fit ​​and fix the connecting plate: Install the connecting block 1 (6) and the connecting groove (20) on both sides of the upper assembly block (3) respectively, so that the two are tightly connected, and then install the connecting plate 1 (16) and the connecting plate 2 (18), and thread them together through the screw rod (17) and the nut (19); S6. Install the water retaining plate and check the connection: fix the water retaining plate (5) on both sides of the assembly top block (4) so ​​that rainwater can be discharged smoothly. Finally, check all the connection parts to complete the construction.

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