A circular arc block assembled pipe gallery and its assembly method

Abstract

This invention discloses a circular arc block assembly pipe gallery and its assembly method. The key feature is that it is assembled from circular arc mortise and tenon blocks using mortise and tenon joints. After assembly, a drainage channel is formed on the outer surface of the pipe gallery. The circular arc mortise and tenon blocks are formed by high-tonnage mechanical pressing and can be either integral circular arc mortise and tenon blocks or composite circular arc mortise and tenon blocks. The composite circular arc mortise and tenon blocks are composed of inner and outer circular arc mortise and tenon blocks joined together. This invention provides a pipe gallery assembly method with low construction difficulty, fast project progress, guaranteed quality, low maintenance costs, and long service life.

Description

Technical Field

[0001] This invention relates to the field of pipe gallery technology in water conservancy and transportation, and in particular to a circular arc block assembled pipe gallery and its assembly method. Background Technology

[0002] Currently, the methods used in my country's transportation roads and water conservancy projects, particularly for underground pipelines traversing rivers and mountains, vary. Some involve constructing the pipeline using masonry blocks after formwork, while others directly utilize ultra-large diameter prefabricated pipes connected in series to form the pipe gallery. However, current pipe gallery components are either manufactured using mechanical molds with manual feeding and rotation, resulting in uneven internal density of the overall components. Even when formed, these components are not advantageous in application. The large size of the pipes increases transportation costs and installation difficulty, and quality cannot be guaranteed. Furthermore, pre-coating the inner and outer layers of the prefabricated pipes with waterproof materials can easily cause damage during transportation and installation.

[0003] After the utility tunnel is constructed, only a layer of organic waterproof coating is applied to the inner wall of the pipes. However, in projects constructed using this technology, acidic and alkaline harmful liquids seeping from the frozen soil due to temperature changes create a strong, compressive, and turbid environment that traps and impregnates the precast concrete pipes. This causes corrosion, cracking, and leakage at the concrete pipes or joints, severely impacting the project's lifespan and increasing maintenance difficulty and costs. In summary, existing prefabricated pipe gallery construction is difficult, the project progress is slow, the quality is hard to guarantee, the maintenance cost is high, and the service life is short. In some cases, the structure will open and leak after 5-6 years, and in others, it will open and leak after 2-3 years. Summary of the Invention

[0004] The purpose of this invention is to improve and innovate upon the problems existing in the background technology, and to provide a circular arc block assembled pipe gallery and its assembly method. The construction difficulty is small, the project progress is fast, the quality can be guaranteed, the maintenance cost is low, and the service life is long.

[0005] The technical solution adopted in this invention is: a circular arc block assembled pipe gallery, characterized in that: it is assembled from circular arc mortise and tenon blocks by mortise and tenon joints, and the outer surface of the pipe gallery forms a drainage channel after assembly. The circular arc mortise and tenon blocks are pressed by high-tonnage machinery and can be integral circular arc mortise and tenon blocks or combined circular arc mortise and tenon blocks, wherein the combined circular arc mortise and tenon blocks are composed of inner and outer circular arc mortise and tenon blocks; a drainage ditch is set along the center line of the bottom ground of the pipe gallery, and a fence hole cover plate is installed on the drainage ditch.

[0006] The present invention provides a composite arc tenon and mortise block, wherein the outer arc tenon and mortise block is a fan-shaped ring, comprising a block body, a tenon, and a mortise hole. The tenon and mortise hole are spaced apart and located within the arc of the block body. Both the tenon and mortise hole are dovetail structures. Semicircular holes are provided on both sides of the center of the tenon. An annular groove is provided on the block body. A circular through hole is provided at the center line of the mortise hole in the annular groove. A reinforcing groove is provided downward along the center line of the mortise hole at the circular through hole on the block body. The reinforcing groove extends all the way to the mortise hole. The inner arc tenon and mortise block is a fan-shaped ring, comprising a block body, a tenon, and a mortise hole. The tenon and mortise hole are spaced apart and located outside the arc of the block body. Both the tenon and mortise hole are dovetail structures. Semicircular holes are provided on both sides of the center of the tenon. An annular groove is provided on the block body. A circular through hole is provided at the center line of the tenon in the annular groove. A reinforcing groove is provided upward along the center line of the tenon on the block body at the circular through hole. Alternatively, the outer arc tenon and mortise block is generally fan-shaped and includes a block body, tenons, and mortises. The tenons and mortises are spaced apart and located within the arc of the block body. Both the tenons and mortises are dovetail structures. The block body has an annular groove, and the annular groove has a circular through hole at the center line of the mortises. There are triangular through holes at the two connections between the block body and the tenons, and a rib groove is provided on the end surface of the circular through hole. The inner arc tenon and mortise block is generally fan-shaped and includes a block body, tenons, and mortises. The tenons and mortises are spaced apart and located outside the arc of the block body. Other structures are the same as the outer arc tenon and mortise block.

[0007] The improved version has semi-circular holes at both ends of the main body of the block. When assembled, the semi-circular holes at the ends of the two outer arc tenon blocks form a single circular hole.

[0008] The improved version features chamfered ends on both sides of the main body of the block, and rounded edges on both sides of the main body of the block.

[0009] The two ends of the pipe body are interlocked by the arc tenon and mortise blocks, which are staggered by half the height of the blocks. One end is flush with the other end, and the outer arc tenon and mortise block extends out; or one end is flush with the other end, and the inner arc tenon and mortise block extends out; or one end has the outer arc tenon and mortise block extending out, and the other end has the inner arc tenon and mortise block extending out.

[0010] The integral arc tenon and mortise block of the present invention has large through holes of square or circular shape spaced apart on the main body of the block, and movable locking tenons matching the shape of the large through holes. The movable locking tenons are solid or have through holes. The main body of the block is provided with an annular groove above and below the large through holes. The annular groove has a circular through hole at the center line of the wall of the adjacent large through hole, and a rib groove connecting the upper and lower circular through holes.

[0011] The main body of the block has semi-circular holes at both ends. When the blocks are assembled, the semi-circular holes at the ends of the two blocks form a circular hole. Alternatively, one end may have a semi-circular end hole, and the other end may have a semi-cylindrical locking tenon. When assembled, the semi-cylindrical locking tenon and the semi-circular end hole form an interlocking structure.

[0012] This invention discloses an assembly method for pipe racks using combined arc-shaped masonry blocks, the specific process of which is as follows: 1) Flatten a flat mold table and draw the inner or outer circle line of the round tube to be assembled. 2) First, take the inner arc tenon and mortise block or the outer arc tenon and mortise block and build it. Then, place the inner arc tenon and mortise block and the inner circle line to coincide or place the outer arc tenon and mortise block and the outer circle line to coincide in sequence to form a circle. Then, take the corresponding outer arc tenon and mortise block or inner arc tenon and mortise block and build it outside or inside the circle. Make at least two concave holes offset and move it up by half the block height to mortise and mortise assembly. 3) After the circular arc tenon and mortise blocks are assembled into the tube to the appropriate length, reinforcing bars are inserted into the circular through holes or movable locking tenons are inserted for anchoring. Reinforcing bars are embedded in the grooves and annular grooves to fix them, thus forming a three-dimensional steel frame structure, making the assembled tube a whole, and leaving a locking tenon of the inner circular arc tenon or outer circular arc tenon block at the end, which is half the height of the block. 4) After the assembled pipe body has solidified and can be moved and rolled, first transport one assembled pipe body to the culvert opening, fix it with concrete, and then assemble the other assembled pipe body and one end of the first assembled pipe body with mortise and tenon joints; or first transport one assembled pipe body to the middle of the culvert, fix it with concrete, and then assemble the other assembled pipe body at both ends of the first assembled pipe body with mortise and tenon joints; after the pipe gallery is assembled, use arc mortise and tenon blocks of corresponding half the block height to fill in the two ends.

[0013] This invention discloses an assembly method for a pipe gallery using integral circular arc blocks, the specific process of which is as follows: 1) Flatten a flat mold table and draw the inner or outer circle line of the round tube to be assembled. 2) First, take the whole arc mortise and tenon blocks and arrange them in sequence to form a circle, aligning them with the inner circle line or the outer circle line; then, take the whole arc mortise and tenon blocks and assemble them on the circle with at least two recessed holes in a staggered mortise and tenon joint. 3) After the arc tenon and mortise blocks are assembled into the tube to the appropriate length, reinforcing bars are inserted into the circular through holes or movable locking bolts are inserted for anchoring. Reinforcing bars are embedded in the grooves and annular grooves to fix them, thus forming a three-dimensional steel frame structure, making the assembled tube a whole, and leaving a movable locking bolt at the end with half the height of the block. 4) After the assembled pipe body has solidified and can be moved and rolled, first transport one assembled pipe body to the culvert opening, fix it with concrete, and then assemble another assembled pipe body and one end of the first assembled pipe body with at least two recessed movable tenon joints; or first transport one assembled pipe body to the middle of the culvert, fix it with concrete, and then assemble another assembled pipe body with at least two recessed movable tenon joints at both ends of the first assembled pipe body; after the pipe gallery is assembled, no movable locking tenons are left at both ends.

[0014] Furthermore, during assembly, the gaps formed between the blocks are filled with graphene inorganic waterproof and anti-corrosion coating. After assembling a section of the pipe, the outer wall of the pipe is smoothed and cleaned, and then a 1-1.5mm thick layer of graphene inorganic waterproof and anti-corrosion coating is sprayed onto the outer wall of the assembled pipe in a timely manner using a combination of manual and mechanical long-rod nozzles.

[0015] The assembled pipe body is generally 20-30m long. Reinforcing bars are inserted into the longitudinal holes, and reinforcing bars are embedded in the grooves and annular grooves. The joints are reinforced by electric welding; or the head and tail of the reinforcing bars are threaded, and after being mechanically pulled, they are tightened with nuts and then the nuts are welded in place.

[0016] Compared with existing process structures and technologies, the present invention has the following advantages: 1. The arc-shaped blocks of this invention are pressed by a high-tonnage hydraulic press. With a hollow ratio of 35%, the compressive strength reaches 25 MPa. When solid, the compressive strength is as high as 56-60 MPa. The main body does not crack, and the service life of the main structure greatly exceeds that of the structures under the existing technology.

[0017] 2. The circular arc block type of this invention is applicable to the varying sizes of pipelines in traffic culverts, urban utility tunnels, and water conservancy utility tunnel construction projects. Because the length, width, and height of the blocks are modular, they can be longitudinally staggered and interlocked or horizontally staggered and interlocked in the direction of the circular holes during assembly. The corresponding interlocking structure has been proven by tests to be able to withstand outdoor conditions of wind, rain, freezing, and high temperatures without any shrinkage cracks on the surface of the components, except for the designed positioning expansion joints, demonstrating the good crack resistance and stability of the masonry.

[0018] 3. This invention adopts a simplified assembly method that breaks down the whole into parts and then integrates them into a whole. This avoids the problems of existing pipe bodies being large, heavy, inconvenient to transport, and difficult to install. It can effectively reduce the labor intensity of workers and reduce construction costs, especially transportation and installation costs. It can effectively avoid the problem of the waterproof and anti-corrosion protective layer of the pipe body being damaged during transportation and installation, and can effectively improve work efficiency and create economic benefits.

[0019] 4. After the pipe gallery assembled by the present invention is sealed with graphene inorganic waterproof and anti-corrosion coating, the drainage channel can divert harmful liquids outside the pipe gallery into the underground sewage ditch set in the base of the pipe gallery, so as to avoid the harmful liquids from stagnating on the outer wall of the pipe gallery for a long time, effectively protecting the pipe gallery and avoiding fundamental damage to the outer wall.

[0020] 5. The product of this invention can be widely used in traffic culverts, underground canals, urban sewage wells, rural warehouses, bridge pier formwork and other projects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the assembled pipe gallery structure; Figure 2 yes Figure 1 Side view; Figure 3 It is a structural diagram of the outer arc mortise and tenon structure block, where 3-1 is the front view and 3-2 is the three-dimensional view; Figure 4 yes Figure 3 The structural diagram of the corresponding inner arc mortise and tenon structure block, where 4-1 is the front view and 4-2 is the three-dimensional view; Figure 5 It is a structural diagram of a circular through-hole outer arc tenon and mortise block, where 5-1 is the front view and 5-2 is the three-dimensional view; Figure 6 yes Figure 5 The structural diagrams of the mortise and tenon blocks with corresponding circular through holes are shown, with 6-1 being the front view and 6-2 being the three-dimensional view. Figure 7 This is a schematic diagram of a single tenon-and-mortise joint on the pipe body; Figure 8 This is a schematic diagram of the double tenon joint of the pipe body; Figure 9 This is a structural schematic diagram of the integral arc mortise and tenon block, where 9-1 is the front view, 9-2 is the side view, and 9-3 is the three-dimensional view; Figure 10 This is another structural schematic diagram of the integral arc mortise and tenon block, where 10-1 is the front view, 10-2 is the side view, and 10-3 is the three-dimensional view; Figure 11 This is another structural schematic diagram of the integral arc mortise and tenon block, where 11-1 is the front view, 11-2 is the side view, and 11-3 is the three-dimensional view; In the diagram: 1 is the main body of the arc block; 2 is the annular groove; 3 is the circular through hole; 4 is the semi-circular hole at the end; 5 is the semi-circular hole in the center of the tenon; 6 is the dovetail tenon; 7 is the dovetail mortise; 8 is the end face chamfer; 9 is the triangular through hole; 10 is the embedded rib groove; 11 is the movable tenon; 12 is the drainage groove; 13 is the semi-cylindrical tenon; 14 is the large through hole; 15 is the drainage ditch; 16 is the fence hole cover plate; and 17 is the retaining embankment. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings.

[0023] The accompanying drawings illustrate a preferred embodiment of the invention. However, the invention can be implemented in various forms with different lengths, quantities, geometric dimensions, and angles, and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the invention more thorough and complete.

[0024] from Figure 1 and Figure 2 As can be seen, this invention is a circular arc block assembled pipe gallery, which is assembled from circular arc mortise and tenon blocks pressed by high-tonnage machinery. The circular arc mortise and tenon blocks can be integral circular arc mortise and tenon blocks, or they can be combined circular arc mortise and tenon blocks composed of inner and outer circular arc mortise and tenon blocks. After the blocks are assembled, they form a drainage channel for harmful liquids, allowing the entire pipe body to form a parallel circular shape. Before assembling the pipe gallery, a drainage ditch is set along the centerline of the ground at the bottom of the pipe gallery. A fence cover is installed on the drainage ditch. Pipe gallery support piers are set on both sides of the ditch and at the expansion joints of the pipe interfaces. Retaining embankments are set between the pipe gallery support piers to prevent soil from falling into the drainage ditch and causing blockage.

[0025] Figure 3 It is an outer arc tenon and mortise block, with an overall fan-shaped annular shape, including the main block body, tenon, and mortise. The tenon and mortise are located within the arc of the main block body. The tenon and mortise of the arc tenon and mortise block are spaced apart, and both the tenon and mortise are dovetail structures at 75°-80°, symmetrical and consistent, allowing for interlocking by offsetting half the block height longitudinally and laterally. There are semi-circular holes on both sides of the center of the tenon. The main block body has an annular groove, and the annular groove has a circular through hole at the center line of the mortise. The main block body has a rib groove extending downwards from the center line of the mortise at the circular through hole, and the rib groove extends to the mortise. There are semi-circular holes at both ends. When assembled, the semi-circular holes at the ends of two outer arc tenon and mortise blocks form a circular hole. The end faces of the main block body are chamfered, and the two sides of the main block body are arc edges. For offset interlocking, there is also an outer arc tenon and mortise block with half the block height.

[0026] Figure 4 Is with Figure 3The paired inner arc tenon and mortise blocks are also fan-shaped and circular, including the block body, tenon, and mortise. The tenon and mortise are located outside the arc of the block body. The tenon and mortise of the arc tenon and mortise blocks are spaced apart, and both the tenon and mortise are 75°-80° dovetail structures, symmetrical and consistent, allowing for interlocking by offsetting half the block height longitudinally and laterally. Semi-circular holes are provided on both sides of the center of the tenon. The block body has an annular groove with a circular through hole at the center line of the tenon. The block body has a recessed groove along the center line of the tenon at the circular through hole, penetrating the tenon. Both ends have semi-circular holes. When assembled, the semi-circular holes at the ends of the two outer arc tenon and mortise blocks form a single circular hole. The end faces of the block body are chamfered, and the sides of the block body are rounded. For offset interlocking, there is also an outer arc tenon and mortise block at half the block height.

[0027] Figure 3 The outer arc mortise and tenon blocks and Figure 4 The inner arc mortise and tenon blocks are joined together to form composite arc mortise and tenon blocks. Reinforcing ribs or movable locking bolts are inserted into the circular through holes on both the outer and inner arc mortise and tenon blocks for anchoring. Reinforcing bars can be embedded in the grooves and annular grooves for fixation, thus forming a three-dimensional steel frame structure. Because the end faces of the main block body are chamfered and the sides are rounded, the assembled pipe gallery's outer wall forms grooves, enabling the pipe gallery to discharge sewage.

[0028] Figure 5 This is a different type of outer arc tenon and mortise block, with an overall fan-shaped annular structure, including the block body, tenon, and mortise. The tenon and mortise are located within the arc of the block body. The tenon and mortise of the arc tenon and mortise block are spaced apart, and both the tenon and mortise are 75°-80° dovetail structures, symmetrical and consistent, allowing for interlocking by offsetting half the block height longitudinally and laterally. The block body has an annular groove, and a circular through hole is located at the center line of the mortise. To reduce the weight of the block without affecting the structural strength requirements, triangular through holes are provided at the two connections between the block body and the tenon, and a groove for embedded reinforcement is provided on the end surface of the circular through hole. The block body has semi-circular end holes at both ends. When assembled, the semi-circular end holes of two outer arc tenon and mortise blocks form a single circular hole. The end faces of the block body are chamfered, and the two sides of the block body are rounded edges. For staggered interlocking, the outer arc tenon block also has an outer arc tenon block with half the block height.

[0029] Figure 6 for Figure 5 The corresponding inner arc tenon and mortise block is a fan-shaped ring, including the main body of the block, the tenon, and the mortise hole. The tenon and mortise are located outside the arc of the main body of the block, and the other structures are the same as those of the outer arc tenon and mortise block. For staggered interlocking, the inner arc tenon and mortise block also has an inner arc tenon and mortise block that is half the height of the block.

[0030] Figure 5 The outer arc mortise and tenon blocks and Figure 6 The inner arc mortise and tenon blocks are joined together to form composite arc mortise and tenon blocks. Reinforcing ribs or movable locking bolts are inserted into the circular through holes on both the outer and inner arc mortise and tenon blocks for anchoring. Reinforcing bars can be embedded in the grooves and annular grooves for fixation, thus forming a three-dimensional steel frame structure. Because the end faces of the main block body are chamfered and the sides are rounded, the assembled pipe gallery's outer wall forms grooves, enabling the pipe gallery to discharge sewage.

[0031] The arc of the outer arc tenon and mortise block when assembling pipes with diameters of 3m, 4m, 5m, and 6m is 51-52 degrees, 35-36 degrees, 26-27 degrees, 21-22 degrees, and 18-19 degrees, respectively.

[0032] This invention utilizes Figure 3 and Figure 4 ,or Figure 5 and Figure 6 The circular arc tenon and mortise blocks in the middle are interlocked at both ends of the pipe body by offsetting half the block height, so that one end is flush and the other end has an outward circular arc tenon and mortise block protruding, such as... Figure 7 -1; Alternatively, one end can be flush with the other, with the inner arc tenon and mortise block protruding, such as... Figure 7 -2; Alternatively, one end of the outer arc tenon and mortise block can protrude, and the other end of the inner arc tenon and mortise block can protrude, as shown in the example. Figure 8 .

[0033] When the arc-shaped mortise and tenon blocks of the present invention are produced, formed, stacked, and piled up, a 1-1.5mm thick graphene inorganic waterproof and anti-corrosion coating can be sprayed onto the surface layer of the blocks, especially the mortise and tenon structure parts.

[0034] The method for on-site assembly of a utility tunnel according to the present invention is as follows: 1) Flatten a flat mold table and draw the inner or outer circle line of the round tube to be assembled. 2) First, take the inner arc tenon and mortise block or the outer arc tenon and mortise block and build it. Then, place the inner arc tenon and mortise block and the inner circle line to coincide or place the outer arc tenon and mortise block and the outer circle line to coincide in sequence to form a circle. Then, take the corresponding outer arc tenon and mortise block or inner arc tenon and mortise block and build it outside or inside the circle. Make at least two concave holes offset and move it up by half the block height to mortise and mortise assembly. 3) After the circular arc tenon and mortise blocks are assembled into the tube to the appropriate length, reinforcing bars are inserted into the circular through holes or movable locking tenons are inserted for anchoring. Reinforcing bars are embedded in the grooves and annular grooves to fix them, thus forming a three-dimensional steel frame structure, making the assembled tube a whole, and leaving a locking tenon of the inner circular arc tenon or outer circular arc tenon block at the end, which is half the height of the block. 4) After the assembled pipe body has solidified and can be moved and rolled, first transport one assembled pipe body to the culvert opening, fix it with concrete, and then assemble the other assembled pipe body and one end of the first assembled pipe body with mortise and tenon joints; or first transport one assembled pipe body to the middle of the culvert, fix it with concrete, and then assemble the other assembled pipe body at both ends of the first assembled pipe body with mortise and tenon joints; after the pipe gallery is assembled, use arc mortise and tenon blocks of corresponding half the block height to fill in the two ends.

[0035] The following points should be noted when assembling the pipe gallery on-site according to this invention: 1) When assembling, fill the gaps between blocks with graphene inorganic waterproof and anti-corrosion coating.

[0036] 2) After assembling a section of the pipe, the outer wall of the pipe is smoothed and cleaned. Then, a layer of graphene inorganic waterproof and anti-corrosion coating with a thickness of 1-1.5mm is sprayed onto the outer wall of the assembled pipe using a combination of manual and mechanical long-rod nozzles.

[0037] 3) Based on the expansion joint length requirements of the pipe gallery design, the assembled pipe body is generally 20-30m long. Reinforcing ribs are inserted into the longitudinal holes, and reinforcing bars are embedded in the grooves and annular grooves. Connections are reinforced by electric welding. Alternatively, the head and tail ends of the reinforcing ribs can be threaded, mechanically pulled in place, and the nuts tightened before being welded securely. Reinforcing bars can also be arranged within the inner and outer arc tenon blocks during production, or steel fibers can be added to the formula to eliminate the need for additional reinforcing ribs during later assembly. All weld points are sealed with graphene inorganic waterproof and anti-corrosion coating.

[0038] Once assembled into a complete utility tunnel, a ring-shaped drainage channel is formed on the outer surface of the tunnel, facilitating the flow of overflowing sewage into the drainage ditch located underground through a screen opening at the center line of the tunnel. Concrete block piers are installed on both sides of the tunnel to secure it, with retaining walls between the piers to prevent mud and sand from clogging the drainage ditch, thus providing another layer of protection for the tunnel structure.

[0039] The circular arc tenon and mortise block of this invention can also be a one-piece circular arc tenon and mortise block. Compared with the inner and outer circular arc tenon and mortise blocks, it does not have locking tenons and mortise holes. Instead, it has large through holes spaced apart on the main body of the block. These large through holes include square through holes. Figure 9 I-shaped through hole Figure 11 Or see circular through hole Figure 10 Each block is equipped with a corresponding movable tenon. The main body of the block has an annular groove above and below the large through-hole. Each annular groove has a circular through-hole at the center line of the adjacent large through-hole wall, and a groove for embedded reinforcing bars connecting the upper and lower circular through-holes. The main body of the block has semi-circular end holes at both ends, or one end has a semi-circular end hole and the other end has a semi-cylindrical tenon. When assembled, the semi-cylindrical tenon and the semi-circular end hole form an interlocking structure. The movable tenon can be designed as a hollow structure.

[0040] During the actual assembly, after applying waterproof and anti-corrosion mortar to the movable lock tenon, it is anchored into the pre-built circular tube hole corresponding to the corresponding shaped hole.

[0041] The method of assembling the pipe gallery on-site using integral arc-shaped mortise and tenon blocks is as follows: 1) Flatten a flat mold table and draw the inner or outer circle line of the round tube to be assembled. 2) First, take the whole arc mortise and tenon blocks and arrange them in sequence to form a circle, aligning them with the inner circle line or the outer circle line; then, take the whole arc mortise and tenon blocks and assemble them on the circle with at least two recessed holes in a staggered mortise and tenon joint. 3) After the arc tenon and mortise blocks are assembled into the tube to the appropriate length, reinforcing bars are inserted into the circular through holes or movable locking bolts are inserted for anchoring. Reinforcing bars are embedded in the grooves and annular grooves to fix them, thus forming a three-dimensional steel frame structure, making the assembled tube a whole, and leaving a movable locking bolt at the end with half the height of the block. 4) After the assembled pipe body has solidified and can be moved and rolled, first transport one assembled pipe body to the culvert opening, fix it with concrete, and then assemble another assembled pipe body and one end of the first assembled pipe body with at least two recessed movable tenon joints; or first transport one assembled pipe body to the middle of the culvert, fix it with concrete, and then assemble another assembled pipe body with at least two recessed movable tenon joints at both ends of the first assembled pipe body; after the pipe gallery is assembled, no movable locking tenons are left at both ends.

[0042] The following points should be noted when assembling the pipe gallery on-site according to this invention: 1) When assembling, fill the gaps between blocks with graphene inorganic waterproof and anti-corrosion coating.

[0043] 2) After assembling a section of the pipe, the outer wall of the pipe is smoothed and cleaned. Then, a layer of graphene inorganic waterproof and anti-corrosion coating with a thickness of 1-1.5mm is sprayed onto the outer wall of the assembled pipe using a combination of manual and mechanical long-rod nozzles.

[0044] 3) Based on the expansion joint length requirements of the pipe gallery design, the assembled pipe body is generally 20-30m long. Reinforcing ribs are inserted into the longitudinal holes, and reinforcing bars are embedded in the grooves and annular grooves. Connections are reinforced by electric welding. Alternatively, the head and tail ends of the reinforcing ribs can be threaded, mechanically pulled in place, and the nuts tightened before being welded securely. Reinforcing bars can also be arranged within the inner and outer arc tenon blocks during production, or steel fibers can be added to the formula to eliminate the need for additional reinforcing ribs during later assembly. All weld points are sealed with graphene inorganic waterproof and anti-corrosion coating.

[0045] Once assembled into a complete utility tunnel, a ring-shaped drainage channel is formed on the outer surface of the tunnel, facilitating the flow of overflowing sewage into the drainage ditch located underground through a screen opening at the center line of the tunnel. Concrete block piers are installed on both sides of the tunnel to secure it, with retaining walls between the piers to prevent mud and sand from clogging the drainage ditch, thus providing another layer of protection for the tunnel structure.

[0046] The embodiments described herein are merely preferred embodiments of the invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the invention without departing from the design concept of the invention should fall within the protection scope of the invention. The technical content for which protection is sought in this invention has been fully described in the claims.

Claims

1. A circular arc block assembled pipe gallery, characterized in that: The pipe gallery is assembled from arc-shaped mortise and tenon blocks using mortise and tenon joints. After assembly, a drainage channel is formed on the outer surface of the pipe gallery. These arc-shaped mortise and tenon blocks are pressed using high-tonnage machinery and are composite blocks, consisting of inner and outer arc-shaped mortise and tenon joints. A drainage ditch is installed along the centerline of the pipe gallery floor, with perforated covers installed on the ditch. The outer arc-shaped mortise and tenon block is fan-shaped and includes a main body, tenons, and mortises. The tenons and mortises are spaced apart and located within the arc of the main body. Both the tenons and mortises have dovetail structures, and the tenons have half-ends on both sides of their long center. The block has a circular groove on its main body, with a circular through hole at the center line of the mortise. A reinforcing groove extends downwards along the center line of the mortise at the circular through hole, and further extends into the mortise. The inner arc mortise and tenon block is fan-shaped and includes the main body, tenon, and mortise. The tenon and mortise are spaced apart and located outside the arc of the main body. Both the tenon and mortise are dovetail structures. Semicircular holes are located on both sides of the center of the tenon. The main body has a circular groove, with a circular through hole at the center line of the tenon. A reinforcing groove extends upwards along the center line of the tenon at the circular through hole, penetrating the tenon. Alternatively, the outer arc tenon and mortise block is a fan-shaped ring, including the block body, tenon, and mortise. The tenon and mortise are spaced apart and located within the arc of the block body. Both the tenon and mortise are dovetail structures. The block body has an annular groove, and the annular groove has a circular through hole at the center line of the mortise. There are triangular through holes at the two connections between the block body and the tenon, and a rib groove is provided on the end surface of the circular through hole. The inner arc tenon and mortise block is a fan-shaped ring, including the block body, tenon, and mortise. The tenon and mortise are spaced apart and located outside the arc of the block body. Other structures are the same as the outer arc tenon and mortise block.

2. The arc-shaped block assembled pipe gallery according to claim 1, characterized in that: The main body of the block has semi-circular holes at both ends. When assembled, the semi-circular holes at the ends of the two outer arc tenon blocks form a round hole.

3. The arc-shaped block assembled pipe gallery according to claim 1, characterized in that: The two ends of the main body of the block have chamfered corners, and the two sides of the main body of the block have rounded edges.

4. The arc-shaped block assembled pipe gallery according to claim 1, characterized in that: The two ends of the pipe body are interlocked by the arc tenon and mortise blocks, which are staggered by half the height of the blocks. One end is flush with the other end, and the outer arc tenon and mortise block extends out; or one end is flush with the other end, and the inner arc tenon and mortise block extends out; or one end has the outer arc tenon and mortise block extending out, and the other end has the inner arc tenon and mortise block extending out.

5. The arc-shaped block assembled pipe gallery according to claim 4, characterized in that: The main body of the block has semi-circular holes at both ends. When the blocks are assembled, the semi-circular holes at the ends of the two blocks form a circular hole. Alternatively, one end may have a semi-circular end hole, and the other end may have a semi-cylindrical locking tenon. When assembled, the semi-cylindrical locking tenon and the semi-circular end hole form an interlocking structure.

6. The assembly method of the arc-shaped block assembled pipe gallery according to claim 1 is as follows: 1) Flatten a flat mold table and draw the inner or outer circle line of the round tube to be assembled. 2) First, take the inner arc mortise and tenon blocks or the outer arc mortise and tenon blocks and build them. Then, place the inner arc mortise and tenon blocks and the inner circle line to coincide or place the outer arc mortise and tenon blocks and the outer circle line to build them into a circle. Then, take the corresponding outer arc mortise and tenon blocks or the inner arc mortise and tenon blocks and build them outside or inside the circle. Make at least two mortise holes offset and move them up by half the block height to mortise and tenon assembly. 3) After the circular arc tenon and mortise blocks are assembled into the tube to the appropriate length, reinforcing bars are inserted into the circular through holes or movable locking tenons are inserted for anchoring. Reinforcing bars are embedded in the grooves and annular grooves to fix them, thus forming a three-dimensional steel frame structure, making the assembled tube a whole, and leaving a locking tenon of the inner circular arc tenon or outer circular arc tenon block at the end, which is half the height of the block. 4) After the assembled pipe body has solidified and can be moved and rolled, first transport one assembled pipe body to the culvert opening, fix it with concrete, and then assemble the other assembled pipe body and one end of the first assembled pipe body with mortise and tenon joints; or first transport one assembled pipe body to the middle of the culvert, fix it with concrete, and then assemble the other assembled pipe body at both ends of the first assembled pipe body with mortise and tenon joints; after the pipe gallery is assembled, use arc mortise and tenon blocks of corresponding half the block height to fill in the two ends.

7. The assembly method according to claim 6, characterized in that: During assembly, the gaps formed between the blocks are filled with graphene inorganic waterproof and anti-corrosion coating. After assembling a section of the pipe, the outer wall of the pipe is smoothed and cleaned, and then a layer of graphene inorganic waterproof and anti-corrosion coating with a thickness of 1-1.5mm is sprayed onto the outer wall of the assembled pipe in a timely manner using a combination of manual and mechanical long-rod nozzles.

8. The assembly method according to claim 6, characterized in that: The assembled pipe body is generally 20-30m long. Reinforcing bars are inserted into the longitudinal holes, and reinforcing bars are embedded in the grooves and annular grooves. The joints are reinforced by electric welding; or the head and tail of the reinforcing bars are threaded, and after being mechanically pulled, they are tightened with nuts and then the nuts are welded in place.

Images