Pipe culvert construction method

Abstract

The invention relates to a pipe culvert construction method, belongs to the technical field of pipe culvert construction, and solves the technical problem that the construction quality is affected due to the fact that collision or untight butt joint is likely to occur when pipe joints are spliced at present. The method comprises the steps that a supporting structure is placed behind an installed pipe joint, a to-be-installed pipe joint is lifted to the supporting structure through a lifting appliance, and connecting blocks are arranged on the to-be-installed pipe joint and the installed pipe joint; the sealing structure is installed at the birdmouth of the installed pipe joint, and a dragging assembly is installed between the connecting block on the pipe joint to be installed and the connecting block on the installed pipe joint; the to-be-installed pipe joint is dragged through the dragging assembly, so that the to-be-installed pipe joint moves on the supporting structure, and the insertion pipe section of the to-be-installed pipe joint is inserted into the birdmouth of the installed pipe joint till the insertion pipe section is tightly matched with the birdmouth; cement mortar is smeared between the to-be-installed pipe joint and the installed pipe joint, and the dragging assembly is dismantled; the steps are repeated for multiple times until the multiple pipe joints are spliced into the pipe culvert; and filling soil to bury the spliced pipe culvert.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe culvert construction, and in particular relates to a pipe culvert construction method. Background Art

[0002] A pipe culvert is a structure in road engineering, usually a culvert made of reinforced concrete pipe sections. The main function of a pipe culvert is to serve as a passage below the ground level for drainage or traffic. With the development of science and technology, the reliability and economy of pipe culverts are getting higher and higher, and the construction of pipe culverts made of pipe sections is becoming simpler and simpler.

[0003] In order to facilitate splicing and installation of waterproof structures, most of the current pipe segments are prefabricated with a flared socket at one end, and a prefabricated inserted pipe section corresponding to the socket and with a shrinkage at the other end. When splicing, the inserted pipe section of the pipe segment to be installed is inserted into the socket of the installed pipe segment. Of course, a rubber sealing ring is installed between the inserted pipe segment and the socket for sealing, and then cement mortar is applied between the inserted pipe segment and the socket. After the cement mortar solidifies, the two pipe segments are spliced.

[0004] Because the pipe section is heavy, it is usually suspended with the help of a sling during splicing, so that the pipe section is suspended in the air, and then the pipe section to be installed is pushed to make it close to the installed pipe section. In this process, because the inertia of the pipe section is relatively large, it is difficult to accurately control the position of the pipe section to be installed, especially after the pipe section to be installed is docked with the installed pipe section, because the docking part is located inside the receiving interface and is difficult to observe, it is even more difficult to accurately control the position of the pipe section to be installed. For this reason, in actual construction projects, the pipe section to be installed often collides with the installed pipe section or the two are not docked tightly, which seriously affects the construction quality of the pipe culvert. Summary of the invention

[0005] The invention provides a pipe culvert construction method for solving the technical problem that the existing pipe culvert construction method easily causes pipe joint collision or loose joint connection when splicing pipe joints, thus affecting the construction quality.

[0006] The present invention is achieved through the following technical solutions: A pipe culvert construction method, comprising:

[0007] Step 1: Place a support structure behind the installed pipe section, and use a hoist to lift the pipe section to be installed onto the support structure. Both the pipe section to be installed and the installed pipe section are provided with connection blocks;

[0008] Step 2: Install the sealing structure in the socket of the installed pipe section, and install the pulling assembly between the connecting block on the pipe section to be installed and the connecting block on the installed pipe section;

[0009] Step 3: Use the dragging assembly to drag the pipe section to be installed, so that the pipe section to be installed moves on the supporting structure, so that the inserted pipe section of the pipe section to be installed is inserted into the socket of the installed pipe section, until the inserted pipe section of the pipe section to be installed is tightly matched with the socket of the installed pipe section;

[0010] Step 4: Apply cement mortar between the inserted pipe section of the pipe section to be installed and the receiving interface of the installed pipe section, and remove the pulling assembly;

[0011] Step 5: Repeat steps 1 to 4 multiple times until multiple pipe sections are spliced ​​into a culvert;

[0012] Step 6: Fill the assembled pipe culvert with soil.

[0013] Furthermore, in order to better implement the present invention, the pipe section to be installed and the installed pipe section are both pipe body structures, and the connecting block is pre-buried in the middle of the outer pipe wall of the pipe body structure.

[0014] Further, in order to better realize the present invention, the towing assembly includes a first mounting frame, a hydraulic rod and a second mounting frame, the first mounting frame is connected to the connecting block on the installed pipe section, the second mounting frame is connected to the connecting block on the pipe section to be installed, the hydraulic rod has a fixed end and a telescopic end, the fixed end of the hydraulic rod is connected to the first mounting frame, and the telescopic end of the hydraulic rod is connected to the second mounting frame;

[0015] The method of using the drag component to drag the pipe segment to be installed in step 3 is specifically as follows:

[0016] Control the hydraulic rod to retract.

[0017] Further, in order to better realize the present invention, the first mounting frame includes a first sleeve, a first mounting plate and two first connecting plates with round holes, the outer wall of the first sleeve is provided with two first circular shafts facing each other, the two first circular shafts are rotatably inserted into the round holes of the two first connecting plates respectively, the first mounting plate is fixedly connected between the two first connecting plates, and the fixed end of the hydraulic rod is connected to the first mounting plate;

[0018] The connecting block on the installed pipe section is a first cylinder, and the method for connecting the first mounting frame with the connecting block on the installed pipe section is specifically as follows:

[0019] The first sleeve is rotatably sleeved on the first cylinder.

[0020] Further, in order to better realize the present invention, the second mounting frame includes a second sleeve, a second mounting plate and two second connecting plates with round holes, the outer wall of the second sleeve is provided with two second circular shafts facing each other, the two second circular shafts are respectively rotatably inserted into the round holes of the two second connecting plates, the second mounting plate is fixedly connected between the two second connecting plates, and the telescopic end of the hydraulic rod is connected to the second mounting plate;

[0021] The connecting block on the pipe section to be installed is a second cylinder, and the method for connecting the second mounting frame with the connecting block on the pipe section to be installed is specifically as follows:

[0022] The second sleeve is rotatably sleeved on the second cylinder.

[0023] Further, in order to better implement the present invention, the number of first cylinders pre-buried on the installed pipe section is three, and the number of second cylinders pre-buried on the pipe section to be installed is three;

[0024] The number of the pulling components is three groups, and a pulling component is installed between each first cylinder and the corresponding second cylinder.

[0025] Further, in order to better implement the present invention, the sealing structure includes a sealing ring and a steel wire mesh sleeved outside the sealing ring, and the method of installing the sealing structure in the receiving port of the installed pipe joint is specifically as follows:

[0026] Place the sealing structure in the socket of the installed pipe joint so that the wire mesh of the sealing structure fits the inner wall of the socket.

[0027] Further, in order to better implement the present invention, in step 6, the method of filling the spliced ​​pipe culvert with soil is specifically as follows:

[0028] Step 6.1: pouring fluid self-compacting cement soil on the foundation where the pipe culvert is installed;

[0029] Step 6.2: Backfill the plain soil on the fluidized self-compacting cement soil so that the plain soil and the fluidized self-compacting cement soil cover the culvert.

[0030] Furthermore, in order to better implement the present invention, in step 6.1, the fluidized self-compacting cement soil is poured to the centerline elevation of the culvert.

[0031] Furthermore, in order to better implement the present invention, after step 6.2, the following steps are further included:

[0032] Step 6.3: Compact the backfill soil.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The pipe culvert construction method provided by the present invention comprises placing a supporting structure behind an installed pipe segment, lifting the pipe segment to be installed onto the supporting structure by using a hoist, providing a connecting block on both the pipe segment to be installed and the installed pipe segment, then installing a sealing structure in a receiving port of the installed pipe segment, installing a dragging assembly between the connecting block on the pipe segment to be installed and the connecting block on the installed pipe segment, and then using the dragging assembly to drag the pipe segment to be installed so that the pipe segment to be installed moves on the supporting structure, so that the inserted pipe segment of the pipe segment to be installed is inserted into the receiving port of the installed pipe segment until the inserted pipe segment of the pipe segment to be installed is tightly matched with the receiving port of the installed pipe segment, and then applying cement mortar between the inserted pipe segment of the pipe segment to be installed and the receiving port of the installed pipe segment, and removing the dragging assembly, repeating the above steps multiple times until a plurality of pipe segments are spliced ​​into a pipe culvert, and finally filling the spliced ​​pipe culvert with soil.

[0035] Through the above method, the pipe section to be installed is supported by the supporting structure, and a dragging force is applied between the connecting block of the installed pipe section and the connecting block of the pipe section to be installed by means of the dragging assembly, so that the pipe section to be installed is moved on the supporting structure, so that the inserted pipe section of the pipe section to be installed is inserted into the receiving interface of the installed pipe section. The dragging assembly can better position the pipe section to be installed, and by controlling the formation of the dragging assembly, the displacement of the pipe section to be installed during splicing can be conveniently controlled, thereby ensuring that the inserted pipe section of the pipe section to be installed can be more accurately moved to the specified position in the receiving interface of the installed pipe section. In this way, the position of the pipe section to be installed during the splicing process can be accurately controlled to prevent the pipe section to be installed from shaking during splicing, thereby avoiding the pipe section to be installed from colliding with the installed pipe section or foreign objects and being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 is a flow chart of a pipe culvert construction method provided by an embodiment of the present invention;

[0038] Figure 2 It is a structural schematic diagram of a pipe culvert construction method provided by an embodiment of the present invention;

[0039] Figure 3 yes Figure 2 An exploded view of the structure shown;

[0040] Figure 4 yes Figure 2 A schematic diagram of the structure from above;

[0041] Figure 5 is a structural schematic diagram of a sealing structure in an embodiment of the present invention;

[0042] Figure 6 yes Figure 2 A schematic diagram of the structure in which the first sleeve and the second sleeve in the structure shown are both configured as an opposing structure.

[0043] In the figure:

[0044] 100-installed pipe section, 200-support structure, 300-pipe section to be installed, 400-connecting block, 500-sealing structure, 510-sealing ring, 520-wire mesh, 600-traction assembly, 610-first mounting frame, 611-first sleeve, 612-first mounting plate, 613-first connecting plate, 614-first circular shaft, 620-hydraulic rod, 630-second mounting frame, 631-second sleeve, 632-second mounting plate, 633-second connecting plate, 634-second circular shaft, 700-semicircular pipe, 800-stud, 900-nut. DETAILED DESCRIPTION

[0045] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0046] Example:

[0047] like Figure 1-Figure 5 As shown, the pipe culvert construction method provided in this embodiment includes the following steps:

[0048] Step 1: Place a support structure 200 behind the installed pipe segment 100. It should be noted that the pipe culvert is usually installed in a ditch with a pre-dug foundation, and the support structure 200 is placed on the foundation of the ditch. The support structure 200 can be in any form, such as a roller, a pipe seat, etc. Then, the pipe segment 300 to be installed is lifted onto the support structure 200 using a crane or other lifting equipment, so that the pipe segment 300 to be installed is supported by the support structure 200, and the pipe segment 300 to be installed can be preliminarily positioned so that the inserted pipe section on the pipe segment 300 to be installed is aligned with the receiving interface on the installed pipe segment 100. In this embodiment, the pipe segment 300 to be installed and the installed pipe segment 100 are both provided with a connecting block 400.

[0049] Optionally, the pipe segment 300 to be installed and the installed pipe segment 100 are both tubular structures, and the connection block 400 is preset in the middle of the outer pipe wall of the pipe body structure, that is, when the pipe segment is produced in the pipe segment production factory, the connection block 400 protruding from the outer pipe wall of the pipe segment is pre-buried in the middle of the outer pipe wall of the pipe segment. Of course, the height of the connection block 400 protruding from the outer pipe wall of the pipe segment does not affect the splicing of the pipe segments into the culvert and the laying process of the culvert in the ditch. In addition, the connection block 400 can also be installed on the outer pipe wall of the pipe segment by bolting or clamping at the construction site.

[0050] Step 2: Install the sealing structure 500 in the receiving port of the installed pipe section 100. Optionally, the sealing structure 500 in this embodiment includes a sealing ring 510 and a steel wire mesh 520 sleeved outside the sealing ring 510. The sealing ring 510 is a rubber ring. The sealing ring 510 and the steel wire mesh 520 can be fixed together by gluing, or the steel wire mesh 520 can be embedded in the outer ring wall of the sealing ring 510 by embedding. The sealing ring 510 and the steel wire mesh 520 have certain flexibility, so that certain deformation can be generated. Then, the pulling assembly 600 is installed on the connecting block 400 on the pipe section 300 to be installed and the connecting block 400 on the installed pipe section 100. In this way, the pulling assembly 600 is used to connect the pipe section 300 to be installed and the installed pipe section 100.

[0051] Optionally, the towing assembly 600 in this embodiment can be a rigid telescopic structure, such as a telescopic jack, an electric telescopic rod, etc., or a flexible towing structure, such as an electric hoist or a wire rope controlled by a winch, etc. However, in order to properly position the pipe section 300 to be installed, the above-mentioned towing assembly 600 is a rigid telescopic structure.

[0052] As the best implementation of this embodiment, the pulling assembly 600 in this embodiment includes a first mounting frame 610, a hydraulic cylinder and a second mounting frame 630. The first mounting frame 610 is connected to the connection block 400 on the installed pipe section 100, and the second mounting frame 630 is connected to the connection block 400 on the pipe section 300 to be installed. The hydraulic rod 620 has a fixed end and a telescopic end. The fixed end of the hydraulic rod 620 is connected to the first mounting frame 610, and the telescopic end of the hydraulic rod 620 is connected to the second mounting frame 630. In this way, by driving the hydraulic rod 620 to retract, the pipe section 300 to be installed can be pulled.

[0053] Step 3: Use the pulling assembly 600 to pull the pipe section 300 to be installed, so that the pipe section 300 to be installed moves on the supporting structure 200, so that the inserted pipe section of the pipe section 300 to be installed is inserted into the receiving port of the installed pipe section 100, until the inserted pipe section of the pipe section 300 to be installed is tightly matched with the receiving port of the installed pipe section 100. In this process, the inserted pipe section of the pipe section 300 to be installed is inserted into the receiving port of the installed pipe section 100 to squeeze the sealing structure 500 installed in the receiving port, and the sealing ring 510 of the sealing structure 500 is used to seal between the inserted pipe section and the receiving port, and the steel wire mesh 520 has a certain mechanical strength, which can support the inserted pipe section of the pipe section 300 to be installed to a certain extent.

[0054] Specifically, after the pipe section 300 to be installed is hoisted onto the support structure 200, the first mounting frame 610 is first connected to the connection block 400 on the installed pipe section 100, then the hydraulic rod 620 is extended, and then the second mounting frame 630 is connected to the connection block 400 on the pipe section 300 to be installed, and finally the hydraulic rod 620 is retracted, so that the connection block 400 on the pipe section 300 to be installed can be dragged, thereby applying a dragging force to the pipe section 300 to be installed, so that the pipe section 300 to be installed can be moved on the support structure 200. The above-mentioned dragging assembly 600 can well position the pipe section 300 to be installed and limit its movement, so that the inserted pipe section of the pipe section 300 to be installed can be accurately inserted into the receiving interface of the installed pipe section 100 and smoothly squeeze the sealing structure 500. The sealing structure 500 not only has the function of sealing and preventing seepage, but also can support the pipe segment 300 to be installed to a certain extent. Thus, when settlement or earthquake occurs, the pipe segment 300 to be installed tends to be misaligned with the installed pipe segment 100 in the radial direction. The wire mesh 520 of the sealing structure 500 can support the pipe segment 300 to a certain extent, thereby reducing the adverse effects of settlement or earthquake on the culvert.

[0055] At present, the conventional sealing structure 500 is a rubber ring. Although it can achieve a sealing effect, after the installed pipe segment 100 is spliced, part of the weight of the installed pipe segment 100 is pressed on the middle and lower part of the rubber ring, which will cause the deformation of the middle and lower part of the rubber ring to be greater than the deformation of the middle and upper part. In this way, the upper and lower sealing effects are not uniform, and the sealing effect between the receiving interface and the inserted pipe section is not ideal. In this embodiment, a steel wire mesh 520 is arranged outside the sealing ring 510, and the lower part of the steel wire mesh 520 can well support the pipe segment 300 to be installed, thereby reducing the deformation of the middle and lower part of the sealing ring 510, so that the deformation of the upper and lower parts of the sealing ring 510 tends to be the same. Therefore, during use, the sealing effect between the receiving interface and the inserted pipe section is better.

[0056] Optionally, the first mounting frame 610 in the present embodiment includes a first sleeve 611, a first mounting plate 612 and two first connecting plates 613 with circular holes. Two opposite first circular shafts 614 are provided on the outer wall of the first sleeve 611. The two first circular shafts 614 are rotatably inserted into the circular holes of the two first connecting plates 613 respectively. The first mounting plate 612 is fixed between the two first connecting plates 613 by bolts. The fixed end of the hydraulic rod 620 is connected to the first mounting plate 612. The connecting block 400 on the installed pipe section 100 is a first cylinder. The method of connecting the first mounting frame 610 with the connecting block 400 on the installed pipe section 100 is specifically: the first sleeve 611 is rotatably sleeved on the first cylinder.

[0057] In this way, the first mounting frame 610 can rotate relative to the connecting block 400 on the installed pipe segment 100, so that the fixed end of the hydraulic rod 620 is hinged to the connecting block 400 of the installed pipe segment 100. Through this structure, when the pipe segment 300 to be installed is offset by a certain distance in the up and down directions relative to the installed pipe segment 100, the towing assembly 600 can also be used to tow the pipe segment 300 to be installed.

[0058] More preferably, the second mounting frame 630 in the present embodiment includes a second sleeve 631, a second mounting plate 632 and two second connecting plates 633 with circular holes. Two opposite second circular shafts 634 are provided on the outer wall of the second sleeve 631. The two second circular shafts 634 are rotatably inserted into the circular holes of the two second connecting plates 633 respectively. The second mounting plate 632 is fixed between the two second connecting plates 633 by bolts. The telescopic end of the hydraulic rod 620 is connected to the second mounting plate 632. The connecting block 400 on the pipe section 300 to be installed is a second cylinder. The method of connecting the second mounting frame 630 with the connecting block 400 on the pipe section 300 to be installed is specifically: the second sleeve 631 is rotatably sleeved on the second cylinder.

[0059] In this way, the second mounting frame 630 can rotate relative to the connecting block 400 on the pipe section 300 to be installed, so that the fixed end of the hydraulic rod 620 is hinged to the connecting block 400 of the pipe section 300 to be installed. Through this structure, when the pipe section 300 to be installed is offset by a certain distance in the up and down directions relative to the installed pipe section 100, the towing assembly 600 can also be used to tow the pipe section 300 to be installed.

[0060] Of course, the first mounting frame 610 in this embodiment can also be fixedly connected to the connecting block 400 on the above-mentioned installed pipe segment 100 by bolts, and the second mounting frame 630 can also be fixedly connected to the connecting block 400 on the above-mentioned pipe segment 300 to be installed by bolts. In this case, it is necessary to adjust the position of the pipe segment 300 to be installed on the above-mentioned supporting structure 200 so that the inserted pipe section of the pipe segment 300 to be installed is aligned with the receiving interface of the installed pipe segment 100.

[0061] In addition, the number of first cylinders embedded in the installed pipe section 100 is three, the number of second cylinders embedded in the pipe section 300 to be installed is also three, the number of the above-mentioned dragging components 600 is three groups, and a dragging component 600 is installed between each first cylinder and the corresponding second cylinder. In this way, the pipe section 300 to be installed can be better positioned and limited, and it is also easier to drag the pipe section 300 to be installed to splice with the installed pipe section 100. It should be noted that the setting of the second cylinder will not affect the placement of the pipe section 300 to be installed on the support structure 200.

[0062] As another implementation of this embodiment, Figure 6 As shown, the first sleeve 611 and the second sleeve 631 are both configured as a spliced ​​structure, which includes two semicircular tubes 700, that is, the first sleeve 611 and the second sleeve 631 are both composed of two semicircular tubes 700, and the first circular shaft 614 and the second circular shaft 634 are replaced by studs 800, and one stud 800 is arranged at the middle position of the outer tube wall of each semicircular tube 700, and the stud 800 is connected to the circular hole of the corresponding connecting plate, and two nuts 900 are screwed on the stud 800, and the two nuts 900 are respectively located on both sides of the corresponding connecting plate, so that the connecting plate is limited to the stud 800 by the two nuts 900.

[0063] Step 4: After the inserted pipe section of the pipe section 300 to be installed is installed in place in the receiving interface of the installed pipe section 100, cement mortar is applied between the inserted pipe section of the pipe section 300 to be installed and the receiving interface of the installed pipe section 100. After the cement mortar is cured, the pipe section 300 to be installed and the installed pipe section 100 are firmly connected together. At this time, the support structure 200 under the pipe section 300 to be installed can be removed so that the remaining pipe sections can be installed later. Then the pulling assembly 600 is removed.

[0064] Step 5: When the pipe culvert is composed of more than two pipe sections, repeat the above steps 1 to 4 multiple times to splice the multiple pipe sections into a pipe culvert.

[0065] Step 6: Fill the spliced ​​pipe culvert with soil. Because the pipe culvert is usually installed in a trench with a pre-dug foundation, this step actually involves backfilling soil in the trench where the pipe culvert is installed and using the soil to bury the pipe culvert.

[0066] Specifically, the step includes:

[0067] Step 6.1: First pour the fluid self-compacting cement soil in the ditch until the fluid self-compacting cement soil reaches the centerline elevation of the culvert;

[0068] Step 6.2: Backfill the trench with plain soil so that the plain soil is placed on the fluidized self-compacting cement soil, and use the fluidized self-compacting cement soil and the plain soil to bury the culvert together.

[0069] Since the fluid self-compacting cement soil has better compactness, through the above step 6, not only can the culvert be buried, but the backfill efficiency is higher, the burial is denser and the effect is better.

[0070] After step 6.2, step 6.3 is also included: compacting the backfilled soil.

[0071] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pipe culvert construction method, characterized in that: include: Step 1: placing a support structure (200) behind the installed pipe section (100), lifting the pipe section to be installed (300) onto the support structure (200) using a lifting device, and providing a connecting block (400) on both the pipe section to be installed (300) and the installed pipe section (100); Step 2: Install the sealing structure (500) in the receiving port of the installed pipe section (100), and install the pulling assembly (600) between the connecting block (400) on the pipe section to be installed (300) and the connecting block (400) on the installed pipe section (100); Step 3: Use the dragging assembly (600) to drag the pipe section (300) to be installed, so that the pipe section (300) to be installed moves on the support structure (200), so that the inserted pipe section of the pipe section (300) to be installed is inserted into the receiving end of the installed pipe section (100), until the inserted pipe section of the pipe section (300) to be installed is tightly matched with the receiving end of the installed pipe section (100); Step 4: Apply cement mortar between the inserted pipe section of the pipe section to be installed (300) and the receiving interface of the installed pipe section (100), and remove the pulling assembly (600); Step 5: Repeat steps 1 to 4 multiple times until multiple pipe sections are spliced ​​into a culvert; Step 6: Fill the assembled pipe culvert with soil.

2. The pipe culvert construction method according to claim 1, characterized in that: The pipe section to be installed (300) and the installed pipe section (100) are both pipe body structures, and the connecting block (400) is pre-buried and arranged in the middle of the outer pipe wall of the pipe body structure.

3. The pipe culvert construction method according to claim 2, characterized in that: The towing assembly (600) comprises a first mounting frame (610), a hydraulic rod (620) and a second mounting frame (630); the first mounting frame (610) is connected to a connection block (400) on an installed pipe section (100); the second mounting frame (630) is connected to a connection block (400) on a pipe section (300) to be installed; the hydraulic rod (620) has a fixed end and a telescopic end; the fixed end of the hydraulic rod (620) is connected to the first mounting frame (610), and the telescopic end of the hydraulic rod (620) is connected to the second mounting frame (630); The method of using the dragging assembly (600) to drag the pipe section (300) to be installed in step 3 is specifically as follows: The hydraulic rod (620) is controlled to retract.

4. The pipe culvert construction method according to claim 3, characterized in that: The first mounting frame (610) comprises a first sleeve (611), a first mounting plate (612) and two first connecting plates (613) with circular holes. Two first circular shafts (614) facing each other are arranged on the outer wall of the first sleeve (611). The two first circular shafts (614) are respectively rotatably inserted into the circular holes of the two first connecting plates (613). The first mounting plate (612) is fixedly connected between the two first connecting plates (613). The fixed end of the hydraulic rod (620) is connected to the first mounting plate (612). The connecting block (400) on the installed pipe section (100) is a first cylinder, and the method of connecting the first mounting frame (610) with the connecting block (400) on the installed pipe section (100) is specifically as follows: The first sleeve (611) is rotatably sleeved on the first cylinder.

5. The pipe culvert construction method according to claim 4, characterized in that: The second mounting frame (630) comprises a second sleeve (631), a second mounting plate (632) and two second connecting plates (633) with circular holes. Two second circular shafts (634) facing each other are arranged on the outer wall of the second sleeve (631). The two second circular shafts (634) are respectively rotatably inserted into the circular holes of the two second connecting plates (633). The second mounting plate (632) is fixedly connected between the two second connecting plates (633). The telescopic end of the hydraulic rod (620) is connected to the second mounting plate (632). The connecting block (400) on the pipe section (300) to be installed is a second cylinder, and the method of connecting the second mounting frame (630) with the connecting block (400) on the pipe section (300) to be installed is specifically as follows: The second sleeve (631) is rotatably mounted on the second cylinder.

6. The pipe culvert construction method according to claim 5, characterized in that: The number of first cylinders pre-buried on the installed pipe section (100) is three, and the number of second cylinders pre-buried on the pipe section to be installed (300) is three; The number of the pulling components (600) is three groups, and a pulling component (600) is installed between each first cylinder and the corresponding second cylinder.

7. The pipe culvert construction method according to any one of claims 1 to 6, characterized in that: The sealing structure (500) comprises a sealing ring (510) and a steel wire mesh (520) sleeved outside the sealing ring (510). The method for installing the sealing structure (500) in the receiving end of the installed pipe joint (100) is specifically as follows: The sealing structure (500) is placed in the receiving end of the installed pipe joint (100), so that the steel wire mesh (520) of the sealing structure (500) fits with the inner side wall of the receiving end.

8. The pipe culvert construction method according to any one of claims 1 to 6, characterized in that: In step 6, the method of filling the spliced ​​pipe culvert with soil is specifically as follows: Step 6.1: pouring fluid self-compacting cement soil on the foundation where the pipe culvert is installed; Step 6.2: Backfill the plain soil on the fluidized self-compacting cement soil so that the plain soil and the fluidized self-compacting cement soil cover the culvert.

9. The pipe culvert construction method according to claim 8, characterized in that: In step 6.1, the fluidized self-compacting cement soil is poured to the centerline elevation of the culvert.

10. The pipe culvert construction method according to claim 8, characterized in that: After step 6.2, it also includes: Step 6.3: Compact the backfill soil.

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