Skid-proof footpath plate in round pipe culvert of assembled tenon-and-mortise structure

Abstract

The utility model relates to the technical field of underground electric power pipe galleries, in particular to an anti-skidding footpath plate in a round pipe culvert with an assembled tenon-and-mortise structure, which comprises a footpath plate, a concrete base and a longitudinal bearing beam, the concrete base is laid on the inner bottom surface of the round pipe culvert, and the longitudinal bearing beam is arranged on the concrete base. A plurality of concrete bases are arranged in the longitudinal direction of the circular pipe culvert at equal intervals, and the pipe bottom footpath structure in a masonry type electric power pipe gallery and a cast-in-place type electric power pipe gallery is optimally designed by adopting an assembled mortise and tenon joint technology. The structure of the footpath is decomposed into the concrete base, the longitudinal bearing beam and the footpath plate which can be assembled and constructed, all the components can be prefabricated in a factory and then assembled in a pipeline by constructors, the workload of site construction can be remarkably reduced, transportation and rapid installation are convenient, labor and time are saved, and the construction efficiency is improved. The problems that in the cast-in-place construction process of an existing pipe bottom pedestrian path, materials are difficult to transport, and labor and time are consumed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of underground power pipe corridors, in particular to an anti-slip walkway slab inside a circular culvert with a assembled mortise and tenon structure. Background Art

[0002] An underground power pipe corridor is a facility for centrally laying and managing urban infrastructure pipelines. It is mainly used to accommodate various municipal pipelines such as power, communication, water supply and drainage, etc., so as to realize the effective management and maintenance of these pipelines. It is also called an integrated pipe corridor, a culvert pipe, a utility tunnel or an underground pipeline corridor, etc., such as the new underground PCCP culvert pipe disclosed in CN204098062U.

[0003] After the jacking of the circular culvert of the underground power pipe corridor penetrates through, it is necessary to construct a pedestrian walkway at the bottom of the pipe in the pipe corridor. During the construction, as Figure 1 and Figure 2 shown, generally, a bottom channel of the pipe bottom (hereinafter simply referred to as the pipe bottom walkway) with a flat upper surface that can meet the passage of construction workers or simple trolleys and has a water flow function below is designed at the bottom of the entire length of the pipe corridor. The conventional construction method of the pipe bottom walkway is as follows: transporting building materials such as cement, bricks, sand, and stones from the ground to the underground pipeline, and manually masonry (or in-situ casting) to form masonry (or concrete) piers with fixed notches on both sides that are continuous entities. After the piers are cured, a grid-type walking platform slab made of a polymer material is laid flat and fixed in the fixed notches of the base to form the pipe bottom walkway.

[0004] In the existing construction method of the pipe bottom pedestrian walkway as described in the above technical solution, the consumption of building materials such as bricks and stones required for the project is large, and the transportation distance in the underground pipeline is long and the space is narrow. Therefore, it is difficult to transport building materials in the pipeline, which is time-consuming and laborious. To solve the above technical problems, it is necessary to provide an anti-slip walkway slab inside a circular culvert with a assembled mortise and tenon structure. Content of the Utility Model

[0005] In view of this, the utility model provides an anti-slip walkway slab inside a circular culvert with a assembled mortise and tenon structure. By adopting the assembled mortise and tenon lapping technology, the structure of the pipe bottom walkway in the masonry type and in-situ casting type of the power pipe corridor is optimized. The structure of the walkway is decomposed into three component members, namely a concrete base, a longitudinal load-bearing beam and a walkway slab, which can be assembled for construction. Each component member can be prefabricated in a factory and then assembled by construction workers in the pipeline, which can significantly reduce the workload of on-site construction, and is convenient for transportation and rapid installation, saving time and labor, and solving the problems of difficult material transportation and time-consuming and laborious in the in-situ casting construction process of the existing pipe bottom pedestrian walkway.

[0006] The technical solution of the utility model is realized as follows:

[0007] The utility model provides an anti-slip walkway board inside a prefabricated mortise-tenon structure circular culvert, which includes a walkway board, a concrete base and longitudinal bearing beams. Among them,

[0008] The concrete base is laid on the inner bottom surface of the circular culvert. A number of the concrete bases are arranged at equal intervals along the longitudinal direction of the circular culvert. Two longitudinal bearing beams are respectively arranged on both sides of the top of adjacent two concrete bases, and one walkway board is laid on the top of adjacent two concrete bases;

[0009] The longitudinal bearing beams are parallel to the longitudinal direction of the circular culvert, and both ends of the longitudinal bearing beams are connected with the top of the corresponding concrete bases through mortise-tenon structures;

[0010] The side end of the walkway board is connected with the side end of the corresponding longitudinal bearing beam through a mortise-tenon structure.

[0011] On the basis of the above technical solutions, preferably, positioning mortise grooves are arranged on both sides of the top of the concrete base, and tenons are arranged at the bottom of the longitudinal bearing beams. Among them, the tenons are inserted into the positioning mortise grooves up and down.

[0012] On the basis of the above technical solutions, preferably, the width of the mortise groove is greater than the width of the tenon.

[0013] On the basis of the above technical solutions, preferably, the concrete base is in the shape of an arch bridge, and the top surface of the concrete base is a plane.

[0014] On the basis of the above technical solutions, preferably, the bottom surfaces of both sides of the bottom of the concrete base are arc surfaces.

[0015] On the basis of the above technical solutions, preferably, inner shoulders are arranged at the bottom of the longitudinal bearing beams, and the inner shoulders are arranged between adjacent two concrete bases.

[0016] On the basis of the above technical solutions, preferably, a rabbet is arranged at the top of the longitudinal bearing beam and on the side close to the walkway board. Among them,

[0017] The side end of the walkway board is lapped up and down on the corresponding rabbet;

[0018] The top surface of the rabbet is flush with the top surface of the concrete base.

[0019] On the basis of the above technical solutions, preferably, shock-absorbing strips are arranged on the top surface of the rabbet and on the bottom surface of the positioning mortise groove.

[0020] On the basis of the above technical solutions, preferably, the walkway board is a perforated board, and anti-slip protrusions are arranged on the top surface of the walkway board.

[0021] On the basis of the above technical solutions, preferably, it further includes an angle steel frame, wherein,

[0022] The angle steel frame is fixed to the side of the concrete base by bolts, and the bottom of the angle steel frame abuts against the inner wall of the circular culvert.

[0023] The anti-slip walkway board in the circular culvert with an assembled mortise and tenon structure of the utility model has the following beneficial effects compared with the prior art:

[0024] (1) By connecting the two ends of the longitudinal bearing beam to the top of the concrete base at the corresponding positions through mortise and tenon structures, and connecting the side ends of the walkway board to the side ends of the longitudinal bearing beam at the corresponding positions through mortise and tenon structures, it is convenient to optimize the design of the bottom walkway structure in the masonry-type and cast-in-place power pipe galleries by adopting the assembled mortise and tenon lapping technology. The structure of the walkway is decomposed into three component parts, namely, the concrete base, the longitudinal bearing beam and the walkway board, which can be prefabricated in the factory and then assembled by construction workers in the pipeline. This can significantly reduce the on-site construction workload, and is convenient for transportation and rapid installation, saving labor and time.

[0025] (2) By connecting the two ends of the longitudinal bearing beam to the top of the concrete base at the corresponding positions through mortise and tenon structures, and by connecting the side ends of the walkway board to the side ends of the longitudinal bearing beam at the corresponding positions through mortise and tenon structures, it is not easy for the components to shift, increasing the stability of the entire walkway board project. At the same time, by setting the bottom surfaces on both sides of the concrete base as arc surfaces, it is convenient for the bottom surfaces on both sides of the concrete base to fit with the inner wall of the circular culvert, further improving the stability of the walkway board project.

[0026] (3) By setting a number of concrete bases, the sectional installation of the concrete bases is realized, interrupting the continuity of the bottom ditch wall of the original cast-in-place walkway board, making it more convenient to collect the water in the pipeline. At the same time, the concrete base is in the shape of an arch bridge, which is beneficial to the drainage of the water in the pipeline, making it not easy for the water in the pipeline to overflow the walkway board, and thus making the walkway board not easy to slip and being safer to walk on.

[0027] (4) By setting the groove width of the positioning mortise groove to be greater than the width of the tenon head, there is enough installation clearance between the positioning mortise groove and the tenon head in terms of width dimension, leaving room for deflection installation between the two, realizing the deflection installation between the concrete base and the longitudinal bearing beam, and meeting the installation requirements of the walkway board in the curved jacking pipeline.

[0028] (5) By setting the walkway board as a porous board, it is convenient to reduce weight and facilitate the handling by workers. At the same time, anti-slip protrusions are provided on the top surface of the walkway board, increasing the anti-slip performance of the project and ensuring the safety performance of the project.

[0029] (6) By arranging an angle steel frame on the side of the concrete base, the concrete base is not easily toppled, increasing the overall stability of the entire sidewalk slab project. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 Schematic assembly diagram of the anti-slip sidewalk slab at the bottom of the masonry power pipe gallery;

[0032] Figure 2 Schematic assembly diagram of the sidewalk slab at the bottom of the cast-in-place power pipe gallery;

[0033] Figure 3 Horizontal assembly schematic diagram of the anti-slip sidewalk slab inside the circular culvert with a assembled tenon and mortise structure of the present invention;

[0034] Figure 4 Longitudinal assembly schematic diagram of the anti-slip sidewalk slab inside the circular culvert with a assembled tenon and mortise structure of the present invention;

[0035] Figure 5 Cross-sectional structure schematic diagram of the anti-slip sidewalk slab inside the circular culvert with a assembled tenon and mortise structure of the present invention;

[0036] Figure 6 Connection structure schematic diagram of the concrete base and the angle steel frame of the present invention;

[0037] Figure 7 Cross-sectional view of the concrete base of the present invention;

[0038] Figure 8 Cross-sectional view of the longitudinal load-bearing beam of the present invention;

[0039] Figure 9 Side view of the longitudinal load-bearing beam of the present invention;

[0040] Figure 10 Top view of the sidewalk slab of the present invention;

[0041] In the figure: 1, circular culvert; 2, concrete base; 3, longitudinal load-bearing beam; 4, sidewalk slab; 5, angle steel frame; 201, positioning mortise groove; 301, tenon; 302, inner shoulder; 303, tongue-and-groove joint. Detailed Embodiments

[0042] The following will clearly and completely describe the technical solutions in the present utility model in conjunction with the specific embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative work shall fall within the protection scope of the present utility model.

[0043] As Figure 1-2 shown, the anti-slip walkway slabs inside the circular culvert are mostly constructed by masonry or in-situ casting. Specifically, after the circular culvert of the underground power pipe gallery is jacked through, the construction of the pedestrian walkway at the bottom of the pipe gallery is carried out inside the pipe gallery. During construction, as Figure 1 and Figure 2 shown, there is usually a bottom channel at the bottom of the pipe gallery with a flat upper surface that can meet the passage of construction workers or simple trolleys and has a water flow function below. The traditional construction method of the bottom walkway of the pipe gallery is as follows: transport building materials such as cement, bricks, sand, and stones from the ground to the underground pipeline, and manually mason or cast in-situ to form masonry or concrete piers with fixed notches on both sides that are continuous entities. After the piers are cured, then lay and fix the grid-type walking platform slabs made of polymer materials in the fixed notches of the base to form the bottom walkway of the pipe gallery.

[0044] The existing construction has the following drawbacks: 1. Since the piers on both sides of the bottom walkway of the pipe gallery are continuous entity masonry or concrete wall structures, due to the large amount of building materials such as bricks and stones required for the project, and because the transportation distance of the underground pipeline is long and the space is narrow, it is difficult to transport building materials in the pipeline, consuming a lot of labor and time; 2. Due to the continuity of the piers of the bottom walkway of the pipe gallery, the piers on both sides of the entire bottom walkway form an artificial partition, which is not conducive to the collection of seepage water outside the bottom of the walkway slabs along the pipeline, resulting in water overflowing over the gutter edge of the walkway slabs, making the walkway slabs wet and slippery, and posing a potential safety hazard for the walking and construction of construction workers inside the pipe; 3. The polymer grid belongs to plastic products and has quality defects such as aging, hardening, and brittle fracture.

[0045] For this reason, as Figures 3-10 shown, the present utility model provides an anti-slip walkway slab with a assembled tenon and mortise structure inside the circular culvert to solve the problems existing in the existing construction methods. The anti-slip walkway slab with a assembled tenon and mortise structure inside the circular culvert includes a walkway slab 4, and also includes a concrete base 2 and a longitudinal load-bearing beam 3.

[0046] Among them, the concrete base 2, the longitudinal load-bearing beam 3, and the footpath slab 4 are all prefabricated components in the factory. During construction, the concrete base 2 is laid on the inner bottom surface of the circular culvert 1. A number of concrete bases 2 are arranged equidistantly along the longitudinal direction of the circular culvert 1. On both sides of the top of adjacent two concrete bases 2, one longitudinal load-bearing beam 3 is provided respectively. One footpath slab 4 is laid on the top of adjacent two concrete bases 2; the longitudinal load-bearing beam 3 is parallel to the longitudinal direction of the circular culvert 1, and both ends of the longitudinal load-bearing beam 3 are connected to the top of the corresponding concrete base 2 through a mortise and tenon structure; the side end of the footpath slab 4 is connected to the side end of the corresponding longitudinal load-bearing beam 3 through a mortise and tenon structure.

[0047] In the above structure, the assembled mortise and tenon lapping technology is adopted to optimize the design of the bottom footpath structure in the masonry type and cast-in-situ type power pipe gallery. The structure of the footpath is decomposed into three component parts, namely, the concrete transverse base 2 at the bottom of the pipe, the longitudinal load-bearing beam 3, and the footpath slab 4 with ultra-thin anti-slip characteristics, which can be assembled and constructed. Each component is prefabricated in the factory and then assembled by the construction personnel in the pipeline, so that the flow channel at the bottom of the pipe forms an unobstructed and open water collection system for the water body in the pipeline. The upper part of the footpath slab 4 forms a pedestrian footpath with high strength, good stiffness and anti-slip performance, so as to achieve the purpose of clean pipeline interior, smooth water flow at the bottom of the ditch, smooth upper footpath, safety and anti-slip.

[0048] In the structural design of the concrete base 2, Figure 1 and Figure 2 the continuous wall in Figure 3 and Figure 4 is decomposed into the concrete base 2 with mortise grooves that can bear the footpath slab 4 and the load on the slab, so that when the footpath slab 4 is installed between the concrete bases 2, the groove wall of the polymer plastic grille can also be used to replace the footpath slab 4, as shown in

[0049] As Figure 3 and Figure 5 shown, the flowing water ditch at the bottom of the original designed footpath slab 4 becomes unobstructed, eliminating the obstruction of the ditch wall at the bottom of the pipe, which is more conducive to the collection of the water body in the pipeline, avoiding the slipperiness of the walking surface of the footpath slab 4. At the same time, the concrete base 2 is in the shape of an arch bridge, which is convenient for the derivation of the water body in the pipe and is conducive to drainage. The top surface of the concrete base 2 is a plane, which is convenient for the flat laying of the footpath slab 4.

[0050] As Figures 7-9 shown, positioning mortise grooves 201 are provided on the planes on both sides of the top of the concrete base 2, and tenons 301 are provided at the bottom of the longitudinal load-bearing beam 3. Among them, asFigure 3 As shown, the tenon 301 is inserted into and connected with the positioning mortise groove 201 up and down. The bottom plane of the positioning mortise groove 201 is used to support the tenon 301, and the top surface of the concrete base 2 is used to support the longitudinal load-bearing beam 3. When the top of the walkway slab 4 is stressed, the load of the longitudinal load-bearing beam 3 is transmitted to the concrete base 2, which can effectively prevent the transverse displacement of the longitudinal load-bearing beam 3 on the concrete base 2.

[0051] The width of the mortise groove 201 of the positioning mortise groove is greater than the width of the tenon 301. Specifically, as Figure 5 shown, the width of the bottom planes of the two positioning mortise grooves 201 on the upper plane of the concrete base 2 is 8-10 mm larger than the width of the bottom planes of the tenons 301 at both ends of the longitudinal load-bearing beam 3. During the installation process, through the slight angular deflection between the tenon 301 and the positioning mortise groove 201, the longitudinal load-bearing beam 3 can be installed in a curve to meet the installation of the walkway slab 4 in the curved jacking pipeline.

[0052] In the above structure, the designed thickness of the concrete base 2 is 120 mm, and the self-weight of each concrete base 2 is controlled within 36.5 kg to reduce the self-weight of a single component, achieve the purpose of reducing the labor intensity of the installation workers, and realize single-person installation.

[0053] In addition, anti-toppling devices are provided at the first and last concrete bases 2. The anti-toppling devices include angle steel frames 5. As Figure 6 shown, the angle steel frames 5 are fixed to the side of the concrete base 2 by bolts, and the bottom of the angle steel frames 5 abuts against the inner bottom surface of the circular culvert 1. Specifically, longitudinal bolt holes are prefabricated on the first and last concrete bases 2 for installing the anti-toppling angle steel frames 5 that can move up and down. Bolt holes are designed on the angle steel frames 5 to drill holes on the pipe body of the pipe gallery at the first and last end faces, and the angle steel frames 5 are fixed by expansion bolts, so that the first and last concrete bases 2 and the pipe gallery pipe body form a firm fixation, so as to realize a more stable and firm fixation of the entire walkway slab project. Angle steel frames 5 can also be installed on the side of each concrete base 2.

[0054] In the structural design of the longitudinal load-bearing beam 3, the longitudinal load-bearing beam 3 is a strip-shaped member placed between the positioning mortise grooves 201 of two concrete bases 2 and is also a load-bearing member for installing the walkway slab 4.

[0055] As Figure 5 and Figures 8-9As shown in the figure, a rabbet 303 is provided on the top of the longitudinal load-bearing beam 3 and on one side close to the footpath slab 4. The top surface of the rabbet 303 is flush with the top surface of the concrete base 2. Among them, the top surface of the rabbet 303 is the installation plane of the footpath slab 4. The side ends of the footpath slab 4 are overlapped up and down on the rabbet 303 at the corresponding positions. The side wall on one side of the rabbet 303 forms a footpath slab shoulder 302. During installation, the two longitudinal load-bearing beams 3 are simultaneously placed between two equally spaced concrete bases 2 to achieve the overlap between them. The footpath slab 4 can be continuously installed along the longitudinal direction of the pipeline to form a complete footpath inside the pipeline. After installation, the footpath slab 4 is located between two footpath slab shoulders 302 to form a lateral limiting structure to prevent the footpath slab 4 from displacing laterally and to maintain the stability of the footpath slab 4.

[0056] Tenons 301 are respectively designed at both ends of the longitudinal load-bearing beam 3. The length of the tenon 301 is 55 mm and the net width is 50 mm. During the installation process, since the groove width of the positioning mortise 201 is greater than the width of the tenon 301, therefore, the width difference between the positioning mortise 201 and the tenon 301 can be utilized to achieve a fine adjustment of the footpath slab 4 with a small radius of curvature in the transverse direction. By means of progressive fine adjustment, the installation of the footpath slab 4 and the change of the radius of curvature of the curved pipe gallery can be satisfied and conformed to, and finally the curved installation of the entire footpath slab installation project can be achieved.

[0057] As Figure 9 shown, an inner shoulder 302 is provided at the bottom of the longitudinal load-bearing beam 3. As Figure 4 shown, after installation, the inner shoulder 302 is arranged between two adjacent concrete bases 2. Due to the mortise and tenon positioning function of the inner shoulder 302, the two longitudinally adjacent concrete bases 2 are stably positioned, which can effectively prevent the longitudinal load-bearing beam 3 from having longitudinal displacement on the concrete base 2 and effectively prevent the concrete base 2 from falling down along the longitudinal direction of the pipeline.

[0058] To isolate the collision between the footpath slab 4 and the longitudinal load-bearing beam 3 and achieve the effect of shock absorption and noise reduction, shock-absorbing strips are provided on the top surface of the rabbet 303 and on the bottom surface of the positioning mortise 201. The shock-absorbing strip is a PVC self-adhesive with a width × thickness = 30 × 2 mm.

[0059] In the structural design of the footpath slab 4, the footpath slab 4 is a perforated plate, and anti-slip protrusions are provided on the top surface of the footpath slab 4. Specifically, as Figure 10As shown in the figure, the walkway slab 4 adopts a reinforced concrete structure. To ensure that the load-bearing capacity of the walkway slab 4 is not less than 2.0 KN, while ensuring the mechanical properties such as strength and stiffness of the walkway slab 4, a thickness of 35 mm is adopted. Two through-handling holes with a clear size of length × width = 180 × 46 mm are reserved in the plate surface, and 172 round table-shaped protrusions with a height of 5 mm are evenly laid on the walking plane of the walkway slab 4. Through this structure, the following effects are achieved. First, it meets the load-bearing capacity of the walkway slab 4, ensures the minimum cover thickness of the steel bars, and improves the durability of the walkway slab 4. Second, it designs a wrench space for handling to meet the manual handling of the walkway slab 4. Third, it increases the anti-slip performance of the walkway slab 4. Fourth, it cleverly uses the hollowing-out method to reduce the weight of the walkway slab 4, and controls the self-weight of each longitudinal load within 38 kg to reduce the self-weight of a single component, achieving the purpose of reducing the labor intensity of the installation workers and realizing single-person installation.

[0060] The construction method of an anti-slip walkway slab in a prefabricated tenon-mortise structure circular culvert of the present utility model includes the following steps:

[0061] S1. Installation of the first concrete base;

[0062] 1) Place the first and last concrete bases 2 with longitudinal fixed bolt holes on the inner wall of the center of the bottom surface of the first pipe section of the pipeline, and make one end face of it flush with the end face of the pipe section;

[0063] 2) Pass four fixed bolts into the bolt holes of the concrete base 2 from the outer side of the end face, and install and connect the concrete base 2 with the anti-toppling angle steel frame 5;

[0064] 3) Push the anti-toppling angle steel frame 5 downward until the bottom angle steel of it contacts the inner wall of the pipe section;

[0065] 4) Drill Ф12×50 mm holes on the inner wall of the pipe section at the bolt holes on the bottom angle steel of each angle steel frame 5;

[0066] 5) Insert Ф10×20 mm expansion bolts into the drilled holes and tighten them to fix the anti-toppling angle steel frame 5 on the pipe section;

[0067] 6) Tighten the longitudinal bolts on the concrete base 2 to fix the anti-toppling angle steel frame 5;

[0068] S2. Place the concrete bases 2 on the axis of the pipeline evenly on the center line of the pipeline according to the designed span, and then paste non-drying glue shock-absorbing strips on the bottom surface of the positioning tenon groove 201 of the concrete base 2;

[0069] S3. Place the longitudinal load-bearing beams 3 in pairs in a mirror image, and install the tenons 301 at both ends thereof into the positioning mortise grooves 201 of the adjacent concrete bases 2, so that the inner shoulders 302 of the longitudinal load-bearing beams 3 clamp the concrete bases 2 to form an installation platform for the footway slabs 4;

[0070] S4. Paste non-drying adhesive shock-absorbing strips on the footway slab installation platform of the longitudinal load-bearing beams 3;

[0071] S5. Lift the first footway slab 4 through the hollow hand hole of the footway slab 4, and place the footway slab 4 stably on the installation plane of the longitudinal load-bearing beams 3, and make the transverse end face of the footway slab 4 flush with the outer end face of the first concrete base 2;

[0072] S6. Lift the second footway slab 4 through the hollow hand hole of the footway slab 4, and place the footway slab 4 stably on the installation platform of the longitudinal load-bearing beams 3, and make the transverse end face of the footway slab 4 flush with the inner end face of the first footway slab 4;

[0073] S7. Complete the installation of the footway slab project for the entire line according to the steps and methods of S2, S3, S4, S5, S6; S8. Installation of the last concrete base;

[0074] 1) Place the first and last concrete bases 2 with longitudinal fixing bolt holes on the inner wall at the center of the bottom surface of the last pipe joint of the pipeline, and make one end face thereof flush with the end face of the last pipe joint;

[0075] 2) Insert four fixing bolts into the bolt holes of the concrete base 2 from the outer side of the end face, and complete the installation and connection of the concrete base 2 and the anti-toppling angle steel frame 5;

[0076] 3) Push the anti-toppling angle steel frame 5 downward until the bottom angle steel thereof contacts the inner wall of the pipe joint;

[0077] 4) Drill Ф12×50mm holes on the inner wall of the pipe joint at the bolt holes on the bottom angle steel of each angle steel frame 5;

[0078] 5) Insert Ф10×20mm expansion bolts into the drilled holes and tighten them to fix the angle steel frame 5 on the pipe joint;

[0079] 6) Tighten the longitudinal bolts on the concrete base 2 to fix the angle steel frame 5;

[0080] S9. Complete the installation of the last footway slab 4 according to the steps and methods of S2, S3, S4, S5, S6; S10. Installation steps and methods for the footway slabs 4 of the curved pipe jacking pipeline;

[0081] 1) When it is found that the on-site pipeline is curved, the next concrete base 2 shall be placed at equal distances along the curve of the pipeline in the longitudinal direction at the bottom of the pipe section according to the designed span, and an adhesive damping strip shall be pasted at the bottom of the positioning tenon groove 201;

[0082] 2) Place the tenon head 301 at the end of the longitudinal bearing beam 3 in the positioning tenon groove 201 of the concrete base 2 and place it as far out as possible, so as to utilize the width difference between the positioning tenon groove 201 and the tenon head 301 to achieve a small curvature radius fine adjustment to the left or right of the installation platform of the walkway slab 4. By means of progressive fine adjustment, the installation of the walkway slab 4 and the change of the curvature radius of the curved pipe gallery are satisfied and conformed to, and finally the curved installation of the walkway slab installation project is realized;

[0083] 3) Complete the installation of the walkway slab in the curved pipeline according to the steps and methods of 1 and 2.

[0084] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A non-slip walkway slab inside a prefabricated mortise and tenon structure circular culvert, comprising a walkway slab (4), characterized in that: It also includes a concrete base (2) and a longitudinal load-bearing beam (3). Among them, the concrete base (2) is laid on the inner bottom surface of the circular culvert (1), and a number of the concrete bases (2) are arranged at equal intervals along the longitudinal direction of the circular culvert (1). A longitudinal load-bearing beam (3) is arranged on each of the two sides at the top of two adjacent concrete bases (2), and a walkway slab (4) is laid on the top of two adjacent concrete bases (2); the longitudinal load-bearing beam (3) is parallel to the longitudinal direction of the circular culvert (1), and the two ends of the longitudinal load-bearing beam (3) are connected to the top of the corresponding concrete base (2) through a mortise and tenon structure; the side end of the walkway slab (4) is connected to the side end of the corresponding longitudinal load-bearing beam (3) through a mortise and tenon structure.

2. The anti-slip walkway slab inside the prefabricated round pipe culvert with mortise and tenon structure according to claim 1, characterized in that: Positioning mortise grooves (201) are arranged on both sides at the top of the concrete base (2), and tenons (301) are arranged at the bottom of the longitudinal load-bearing beam (3). Among them, the tenons (301) are inserted into and connected with the positioning mortise grooves (201) up and down.

3. The anti-slip walkway plate inside the prefabricated tenon-mortise structure circular culvert according to claim 2, characterized in that: The width of the mortise groove of the positioning mortise groove (201) is greater than the width of the tenon (301).

4. The anti-slip walkway slab inside the prefabricated tenon-mortise structure circular culvert according to claim 1, wherein: The concrete base (2) is in the shape of an arch bridge, and the top surface of the concrete base (2) is a plane.

5. The anti-slip walkway slab inside the prefabricated round pipe culvert with mortise and tenon structure according to claim 4, characterized in that: The bottom surfaces on both sides of the bottom of the concrete base (2) are arc surfaces.

6. The anti-slip walking path slab inside the prefabricated tenon and mortise structure circular culvert according to claim 2, characterized in that: Inner shoulder ribs (302) are arranged at the bottom of the longitudinal load-bearing beam (3), and the inner shoulder ribs (302) are arranged between two adjacent concrete bases (2).

7. The anti-slip walkway slab inside the prefabricated tenon-mortise structure circular culvert according to claim 6, characterized in that: A rabbet (303) is arranged at the top of the longitudinal load-bearing beam (3) and on the side close to the walkway slab (4). Among them, the side end of the walkway slab (4) is lapped up and down on the corresponding rabbet (303); the top surface of the rabbet (303) is flush with the top surface of the concrete base (2).

8. The anti-slip walkway slab inside the prefabricated tenon and mortise structure circular culvert according to claim 7, characterized in that: Shock-absorbing strips are arranged on the top surface of the rabbet (303) and on the bottom surface of the positioning mortise groove (201).

9. The anti-slip walkway slab inside the prefabricated round pipe culvert with mortise and tenon structure according to claim 1, characterized in that: The walkway slab (4) is a perforated plate, and anti-slip protrusions are arranged on the top surface of the walkway slab (4).

10. The anti-slip walkway slab inside the prefabricated mortise and tenon structure circular culvert according to claim 1, characterized in that: It also includes an angle steel frame (5). Among them, the angle steel frame (5) is fixed to the side part of the concrete base (2) through bolts, and the bottom of the angle steel frame (5) abuts against the inner wall of the circular culvert (1).

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