Method for connecting prefabricated pipe gallery with cast-in-place pipe gallery

Abstract

This application relates to the technical field of pipe racks and provides a construction method for connecting precast jacking pipe racks and cast-in-place pipe racks, including the following steps: S1, excavation of the construction trench; S2, laying of straight sections: using jacking equipment, straight pipes are jacked into the soil section by section along the designed route on the inner wall of the construction trench to form two straight sections; S3, fabrication of the base slab: a first steel reinforcement frame is laid on the bottom wall of the construction trench, and concrete is poured to form the base slab; S4, fabrication of the side slabs: a second steel reinforcement frame is laid at the inner and outer arc edges of the base slab, and concrete is poured at each edge to form two side slabs; S5, fabrication of the top slab: a third steel reinforcement frame is laid between the two side slabs, and concrete is poured to form the top slab; S6, backfilling of the construction trench. This construction method for connecting precast jacking pipe racks and cast-in-place pipe racks allows the pipe rack to adapt to bends at different angles during installation.

Description

Technical Field

[0001] This application relates to the technical field of utility tunnels, and in particular to a construction method for connecting precast jacking utility tunnels with cast-in-place utility tunnels. Background Technology

[0002] A utility tunnel, or pipe gallery, is a corridor for pipelines, typically built underground in cities to centrally lay municipal pipelines such as electricity, communications, water supply, drainage, and gas. Utility tunnel jacking is an underground pipeline engineering technology, also known as pipe jacking or jacking method. This method is commonly used to install new underground pipelines or repair existing ones in cities or other densely populated areas without extensive excavation, significantly reducing the impact of construction on urban life and lowering construction costs and time.

[0003] Conventional utility tunnels are typically laid in a straight line. However, when facing complex terrain (such as unremovable obstacles like building basements), the tunnel needs to bend at a certain angle to avoid these obstacles. The common practice is to prefabricate straight pipe sections (hereinafter referred to as straight pipes) and curved pipe sections (hereinafter referred to as curved pipes) in a factory. The straight and curved pipes are transported to the construction site. According to the design plan, a construction trench is excavated at the designated bend in the tunnel. Inside the trench, specialized jacking equipment is used to push the straight pipes into the ground segment by segment along the designed route. Multiple straight pipes are combined to form a single unit (hereinafter referred to as a straight segment). Based on the bend angle planned in the tunnel design, the straight pipes are pushed into the trench from different sides, forming two straight segments. Then, the curved pipes are hoisted into the trench, with both ends connecting to the two straight segments. The final combination of the curved pipes and the two straight segments forms a utility tunnel with a specific bend, thus avoiding underground obstacles. This construction method has advantages such as fast construction speed, controllable quality, and minimal impact on the surrounding environment, and has been widely used in urban underground pipeline construction.

[0004] However, these arc pipes are prefabricated in the factory in advance. The curvature of the prefabricated arc pipes is usually fixed. For complex terrain, when different angles of bend are required when laying the pipe gallery, the factory is required to create additional models to manufacture arc pipes with different curvatures, which increases the manufacturing difficulty and manufacturing cost. Therefore, further improvements are needed. Summary of the Invention

[0005] In order to accommodate bends at different angles during the installation of the utility tunnel, this application provides a construction method for connecting precast jacking utility tunnels with cast-in-place utility tunnels.

[0006] The construction method for connecting precast jacking pipe galleries and cast-in-place pipe galleries provided in this application adopts the following technical solution:

[0007] A construction method for connecting precast jacking pipe galleries and cast-in-place pipe galleries is described. The pipe galleries include an arc-shaped pipe and two straight sections. Each straight section comprises multiple straight pipes connected end-to-end. The arc-shaped pipe includes a base plate, a top plate, and two side plates, all of which are arc-shaped. The two side plates are respectively located on the inner and outer arc edges of the upper surface of the base plate. The top plate is positioned between the two side plates. The base plate, top plate, and two side plates are combined to form the arc-shaped pipe. The construction method for connecting precast jacking pipe galleries and cast-in-place pipe galleries includes the following steps: S1, Excavation of the construction trench: According to the planning and design, a construction trench is excavated on the ground; S2, Laying of the straight sections: On the inner wall of the construction trench, straight pipes are laid using jacking equipment. S1. Pipes are jacked into the soil section by section according to the design route. Based on the turning angles of the pipe gallery plan, straight pipes are jacked into the construction trench on different side walls to form two straight sections; S2. Construction of the base slab: The first steel reinforcement frame is laid on the bottom wall of the construction trench, and concrete is poured. After the concrete solidifies, the base slab is formed; S3. Construction of the side slabs: The second steel reinforcement frame is laid on the inner and outer arc edges of the base slab, and concrete is poured on each side. After the concrete solidifies, the two side slabs are formed; S4. Construction of the top slab: The third steel reinforcement frame is laid between the two side slabs, and concrete is poured. After the concrete solidifies, the top slab is formed; S5. Backfilling of the construction trench.

[0008] By adopting the above technical solution, after the two straight sections are jacked in using the first, second, and third steel reinforcement frames, steps S3, S4, and S5 are performed sequentially in the construction trench to form the bottom plate, two side plates, and the top plate, respectively. The arc pipe is formed by segmented casting, and the two ends of the arc pipe are connected to the two straight sections. By using the cast-in-place method, an arc pipe that matches the two straight sections can be cast in place according to the turning angle between the two straight sections, so that the pipe gallery can adapt to different angles of turning during installation, improving the adaptability of the overall structure and reducing manufacturing difficulty and cost.

[0009] Optionally, after the second steel reinforcement frame is laid out in step S4, a side baffle is installed on the upper surface of the base plate. The side baffle is used to enclose the second steel reinforcement frame to form a side pouring area for pouring concrete. The second steel reinforcement frame includes a first vertical rod, a second vertical rod, a first horizontal bar, and a second horizontal bar. The lower ends of the first and second vertical rods are connected to the base plate, and multiple first and second vertical rods are spaced along the arc of the base plate. Multiple first vertical rods are correspondingly arranged with multiple second vertical rods, and each first vertical rod and its corresponding second vertical rod are radially spaced apart from each other on the base plate. Multiple first and second horizontal bars are arranged along the arc of the base plate, and multiple first horizontal bars and multiple second horizontal bars are correspondingly arranged. One end of the first horizontal bar is connected to the first vertical rod, and the other end is connected to the second vertical rod. One end of the second horizontal bar is connected to the second vertical rod, and the other end is connected to the first vertical rod. The first horizontal bars and their corresponding second horizontal bars are arranged in a crisscross pattern.

[0010] By adopting the above technical solution, the first vertical bar, the second vertical bar, the first horizontal bar, and the second horizontal bar are arranged to form a second steel reinforcement frame with cross-shaped horizontal and vertical bars. The second steel reinforcement frame is located in the side pouring area. Concrete is poured into the side pouring area. After the concrete solidifies, the concrete and the second steel reinforcement frame combine to form a side plate. The first horizontal bar and the corresponding second horizontal bar are arranged in a cross pattern, which has good structural stability and can improve the structural stability of the side plate, thereby improving the structural stability of the arc pipe.

[0011] Optionally, multiple first and second horizontal bars are provided along the length of the first vertical bar. Both ends of the first and second horizontal bars are provided with through slots for the first or second vertical bar to pass through. Multiple support rings are fitted on the outer peripheral walls of the first and second vertical bars for supporting the first or second horizontal bars. Each support ring is provided with a connector and is installed on the first or second vertical bar through the connector.

[0012] By adopting the above technical solution, through the setting of through grooves and support rings, the support ring is sleeved on the first vertical rod or the second vertical rod and fixed by the connector, so that the support ring can support the first horizontal bar or the second horizontal bar; when installing the first horizontal bar and the second horizontal bar, the through grooves at both ends of the first horizontal bar are aligned with the first vertical rod and the second vertical rod respectively and pushed downwards, and the through grooves at both ends of the second horizontal bar are aligned with the first vertical rod and the second vertical rod respectively and pushed downwards, so that the first horizontal bar and the second horizontal bar form an intersection. After multiple first horizontal bars and multiple second horizontal bars are installed, the first vertical rod, the second vertical rod, the first horizontal bar and the second horizontal bar are combined to form a second steel reinforcement frame with horizontal and vertical intersections, which improves the production efficiency of the second steel reinforcement frame; and through the setting of through grooves, the first horizontal bar and the second horizontal bar can turn around the first vertical rod or the second vertical rod through the through grooves to adapt to the arc of the base plate, so as to make arc tubes with different curvatures and improve the adaptability of the overall structure.

[0013] Optionally, after the first steel reinforcement frame is laid out in step S3, support bars are installed on the first steel reinforcement frame. Multiple support bars are arranged at intervals along the arc of the base plate. The number of support bars, first vertical bars, and second vertical bars are set accordingly. The first vertical bars and the corresponding second vertical bars are slidably installed on the corresponding support bars. A driving component is provided between the first vertical bars and the second vertical bars. The driving component is used to drive the first vertical bars and the second vertical bars to move closer to each other or further away from each other.

[0014] By adopting the above technical solution, through the setting of support bars and drive components, the support bars provide an installation carrier for the first and second vertical bars. After the second steel reinforcement frame is erected, concrete is poured into the side pouring area. During the concrete pouring process, the first vertical bar and the corresponding second vertical bar are driven to slide, so as to move closer to or further away from each other. During the sliding process of the first and second vertical bars, the first and second horizontal bars are driven to swing. The second steel reinforcement frame in the active state can agitate the concrete to remove air bubbles mixed in the concrete, improve the concrete pouring effect, and thus improve the cast-in-place quality of the side plate.

[0015] Optionally, the driving assembly includes a driving rod, a driving gear, and a driving rack. The driving rod is vertically installed between a first vertical rod and a corresponding second vertical rod. The upper end of the driving rod is provided with a rotating head for driving the driving rod to rotate. The driving gear is disposed on the outer peripheral wall of the driving rod. There are two driving racks, which are respectively connected to the first vertical rod and the second vertical rod. Both driving racks mesh with the driving gear for transmission. When the driving rod is rotated, the two driving racks move closer to each other or further away from each other.

[0016] By adopting the above technical solution, through the setting of the drive rod, drive gear and drive rack, the rotating head can be used to connect with tools such as handwheels or electric drills to drive the drive rod to rotate around its own axis; during the process of pouring concrete into the side pouring area, the drive rod is driven to repeatedly rotate forward and reverse, so as to drive the drive gear to repeatedly rotate forward and reverse. The drive gear pulls the first vertical rod and the second vertical rod respectively through two drive teeth, so that the first vertical rod and the second vertical rod are brought closer to each other or moved away from each other, so as to agitate the concrete and improve the concrete pouring effect.

[0017] Optionally, the driving assembly includes a driving rod, a rotating disk, and docking posts. The driving rod is vertically installed between a first vertical rod and a corresponding second vertical rod, and the upper end of the driving rod is provided with a rotating head for driving the driving rod to rotate. The rotating disk is disposed on the outer peripheral wall of the driving rod, and a docking ring groove is formed on the surface of the rotating disk. The docking ring groove is elliptical in shape. Two docking posts are provided, and the two docking posts are respectively connected to the first vertical rod and the second vertical rod, and both docking posts are slidably inserted into the docking ring groove.

[0018] By adopting the above technical solution, through the setting of the drive rod, rotating disk, and docking column, the rotating head can be used to dock with tools such as handwheels or electric drills to drive the drive rod to rotate around its own axis. During the process of pouring concrete into the side pouring area, the drive rod is driven to rotate, thereby driving the rotating disk to rotate. The docking column is slidably inserted into the docking ring groove, so that during the rotation of the rotating disk, the rotating disk can drive the docking column through the docking ring groove, thereby causing the first vertical rod and the second vertical rod to move closer or further apart to agitate the concrete, improve the concrete pouring effect, and improve the overall structure's ease of operation.

[0019] Optionally, a docking sleeve is rotatably mounted on the top wall of the support bar, and the lower end of the drive rod is matched and inserted into the docking sleeve and moves circumferentially with the docking sleeve; a striking element is provided between the docking sleeve and the support bar, and when the docking sleeve rotates, the striking element is used to make the support bar vibrate.

[0020] By adopting the above technical solution, through the setting of the docking sleeve and the tapping component, the drive rod is rotatably installed on the support bar through the docking sleeve. The drive rod and the docking sleeve are circumferentially linked, so that during the rotation of the drive rod, the docking sleeve can be driven to rotate. The tapping component drives the support bar to vibrate, which vibrates the poured concrete, removes air bubbles in the concrete as much as possible, improves the concrete pouring effect in the side pouring area, and improves the quality of the side plate.

[0021] Optionally, the striking component includes a vibrating plate and a cam. The vibrating plate is disposed on the top wall of the support bar and is provided in multiple axially spaced around the docking sleeve. The cam is fixed to the outer peripheral wall of the docking sleeve. When the docking sleeve rotates, the outer peripheral wall of the cam strikes the vibrating plate.

[0022] By adopting the above technical solution, through the setting of the vibrating plate and the cam, the drive rod drives the docking sleeve to rotate, and the docking sleeve drives the cam to rotate, so that the cam can beat the vibrating plate. As the docking sleeve continues to rotate, it continuously generates vibration, so as to remove as many air bubbles as possible from the concrete.

[0023] Optionally, the top wall of the support bar is provided with a movable groove, the length direction of which coincides with the radial direction of the base plate; a first movable sleeve and a second movable sleeve are slidably installed in the movable groove respectively, the first movable sleeve is used for the first vertical rod to be matched and inserted, the first vertical rod is slidably installed on the support bar through the first movable sleeve, and the second movable sleeve is used for the second vertical rod to be matched and inserted, the second vertical rod is slidably installed on the support bar through the second movable sleeve.

[0024] By adopting the above technical solution, the first and second vertical rods are slidably installed on the support bar through the setting of the first and second movable sleeves.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. After the two straight sections are jacked in by setting up the first, second, and third steel reinforcement frames, steps S3, S4, and S5 are carried out in sequence in the construction trench to make the bottom plate, two side plates, and top plate respectively. The arc pipe is formed by segmented casting so that the two ends of the arc pipe are connected to the two straight sections. By casting in place, the arc pipe that matches the two straight sections can be cast in place according to the turning angle between the two straight sections, so that the pipe gallery can adapt to different angles of turning when laid, improve the adaptability of the overall structure, and reduce the manufacturing difficulty and manufacturing cost.

[0027] 2. By setting through grooves and support rings, the support rings are sleeved on the first or second vertical rod and fixed by connectors, so that the support rings can support the first or second horizontal bar. When installing the first and second horizontal bars, the through grooves at both ends of the first horizontal bar are aligned with the first and second vertical rods respectively and pushed downwards, and the through grooves at both ends of the second horizontal bar are aligned with the first and second vertical rods respectively and pushed downwards, so that the first and second horizontal bars intersect. After multiple first and second horizontal bars are installed, the first vertical rod, second vertical rod, first horizontal bar and second horizontal bar are combined to form a second steel reinforcement frame with horizontal and vertical crossbars, which improves the production efficiency of the second steel reinforcement frame. Moreover, by setting through grooves, the first and second horizontal bars can turn around the first or second vertical rod through the through grooves to adapt to the curve of the base plate, so as to make arc tubes with different curvatures and improve the adaptability of the overall structure.

[0028] 3. Through the configuration of the drive rod, rotating disk, and docking column, the rotating head can be used to dock with tools such as handwheels or electric drills to drive the drive rod to rotate around its own axis. During the process of pouring concrete into the side pouring area, the drive rod is driven to rotate, thereby driving the rotating disk to rotate. The docking column is slidably inserted into the docking ring groove, so that during the rotation of the rotating disk, the rotating disk can drive the docking column through the docking ring groove, thereby causing the first vertical rod and the second vertical rod to move closer or further apart to agitate the concrete, improve the concrete pouring effect, and improve the overall structure's ease of operation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0030] Figure 2 This is a schematic diagram illustrating the structure of the embedding part and the embedding groove in Embodiment 1;

[0031] Figure 3 This is a schematic diagram illustrating the structure of the arc tube in Example 1;

[0032] Figure 4 This is an exploded schematic diagram illustrating the second steel reinforcement frame in Example 1;

[0033] Figure 5 This is a partial cross-sectional view of the side baffle in Embodiment 1;

[0034] Figure 6 This is a schematic diagram illustrating the structure of the first steel reinforcement frame in Example 1;

[0035] Figure 7 This is a schematic diagram illustrating the structure of the support ring in Example 1;

[0036] Figure 8 This is a schematic diagram illustrating the structure of the driving component in Embodiment 2;

[0037] Figure 9 This is a schematic diagram illustrating the structure of the driving component in Embodiment 3;

[0038] Figure 10 This is a schematic diagram illustrating the structure of the striking component in Example 4.

[0039] Explanation of reference numerals in the attached drawings: 1. Arc pipe; 11. Base plate; 12. Top plate; 13. Side plate; 14. First reinforcing bar frame; 141. Straight reinforcing bar; 142. Arc reinforcing bar; 16. Side baffle; 161. Side pouring area; 17. Concrete; 2. Straight pipe; 21. Embedding part; 22. Embedding groove; 3. Construction groove; 4. Second reinforcing bar frame; 41. First vertical bar; 42. Second vertical bar; 43. First horizontal bar; 44. Second horizontal bar; 45. Through groove; 46. Support ring; 46 1. Limiting hole; 47. Connecting bolt; 5. Support bar; 51. Docking sleeve; 52. Moving groove; 53. First moving sleeve; 54. Second moving sleeve; 55. Connecting column; 56. First fixed sleeve; 57. Second fixed sleeve; 6. Drive assembly; 61. Drive rod; 611. Rotating head; 62. Drive gear; 63. Drive rack; 64. Rotating disk; 641. Docking ring groove; 65. Docking column; 7. Beating component; 71. Vibrating plate; 72. Cam. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0041] Example 1:

[0042] This application discloses a construction method for connecting precast jacking tunnels and cast-in-place tunnels.

[0043] Reference Figure 1 , Figure 2 The pipe gallery includes an arc pipe 1 and two straight segments. The straight segments include multiple straight pipes 2, which are connected end to end to form a straight segment. In this embodiment, one end of the straight pipe 2 is integrally formed with an embedding part 21, and the other end of the straight pipe 2 is provided with an embedding groove 22. The embedding groove 22 is used for the embedding parts 21 of adjacent straight pipes 2 to match and embed, so as to improve the sealing between two adjacent straight pipes 2.

[0044] Reference Figure 3 , Figure 4 The arc tube 1 includes a base plate 11, a top plate 12, and two side plates 13. In this embodiment, the base plate 11, the top plate 12, and the two side plates 13 are all arc-shaped. The two side plates 13 are fixedly installed on the upper surface of the base plate 11, and the two side plates 13 are respectively located at the inner arc edge and the outer arc edge of the upper surface of the base plate 11. The top plate 12 is fixedly installed on the top wall of the two side plates 13. The base plate 11, the top plate 12, and the two side plates 13 are combined to form the arc tube 1 described above.

[0045] Reference Figure 1 , Figure 5 The construction method for connecting precast jacking tunnels and cast-in-place tunnels includes the following steps:

[0046] S1. Excavation of construction trench 3: a. According to the planning and design, the construction ground is cleaned and obstacles on the ground are removed; b. Construction trench 3 is excavated on the ground using excavators and other equipment.

[0047] S2. Laying of straight sections: Using jacking equipment (jacking equipment is an existing technology structure, and its structure will not be described in detail here, and it is not shown in the figure), the straight pipe 2 is jacked into the soil section by section according to the design route on the inner wall of the construction trench 3. According to the turning angle of the pipe gallery planning design, the straight pipe 2 is jacked into the soil on different side walls of the construction trench 3 to form two straight sections.

[0048] S3. Fabrication of base plate 11: a. Lay the first steel reinforcement frame 14 on the bottom wall of the construction trench 3; b. Build a bottom baffle (not shown in the figure) around the first steel reinforcement frame 14. The bottom baffle is used to enclose the first steel reinforcement frame 14 to form a bottom pouring area for pouring concrete 17; c. Pour concrete 17 into the bottom pouring area. After the concrete 17 has solidified, dismantle the bottom baffle. The base plate 11 is formed between the first steel reinforcement frame 14 and the concrete 17.

[0049] S4. Fabrication of side plate 13: a. Arrange the second steel reinforcement frame 4 at the inner and outer arc edges of the upper surface of the base plate 11 respectively; b. Install side baffles 16 on the upper surface of the base plate 11. Two sets of side baffles 16 are installed, and the two sets of side baffles 16 are respectively set at the inner and outer arc edges of the upper surface of the base plate 11. The two sets of side baffles 16 are corresponding to the two sets of second steel reinforcement frames 4. The side baffles 16 are used to enclose the second steel reinforcement frames 4 to form a side pouring area 161 for pouring concrete 17; c. Pour concrete 17 into the side pouring area 161. After the concrete 17 has solidified, disassemble the side baffles 16. The side plate 13 is formed between the second steel reinforcement frame 4 and the concrete 17.

[0050] S5. Construction of top plate 12: a. A third steel reinforcement frame is laid between the two side plates 13, with the two sides of the third steel reinforcement frame overlapping the top walls of the two side plates 13 respectively; b. A top baffle (not shown in the figure) is built around the third steel reinforcement frame. The top baffle is used to enclose the third steel reinforcement frame to form a top pouring area for pouring concrete 17; c. Concrete 17 is poured into the top pouring area. After the concrete 17 has solidified, the top baffle is dismantled. The top plate 12 is formed between the third steel reinforcement frame and the concrete 17. The bottom plate 11, the top plate 12 and the two side plates 13 are combined to form the above-mentioned arc pipe 1. The two ends of the arc pipe 1 are respectively connected to two straight segments.

[0051] S6. Backfilling of construction trench 3: Select suitable soil, stone and other materials to backfill construction trench 3.

[0052] Reference Figure 6The structure of the first steel reinforcement frame 14 is the same as that of the third steel reinforcement frame. The following description uses the structure of the first steel reinforcement frame 14 as an example. The structure of the third steel reinforcement frame can be obtained in the same way (the third steel reinforcement frame is not shown in the figure). The first steel reinforcement frame 14 includes straight steel bars 141 and curved steel bars 142. The straight steel bars 141 are arranged at intervals along the arc of the base plate 11. Both ends of each straight steel bar 141 are set along the radial direction of the base plate 11. The curved steel bars 142 are formed into an arc by bending. The arc of the curved steel bars 142 is consistent with the arc of the base plate 11. Multiple curved steel bars 142 are arranged at intervals along the radial direction of the base plate 11. All straight steel bars 141 and all curved steel bars 142 are connected into a whole by binding to form the first steel reinforcement frame 14.

[0053] Reference Figure 4 , Figure 7 It should be noted that when the first steel reinforcement frame 14 is laid out and the concrete 17 has not yet been poured, support bars 5 are installed on the first steel reinforcement frame 14. Connecting columns 55 are fixedly installed on the bottom wall of the support bars 5. The connecting columns 55 are fixedly installed on the first steel reinforcement frame 14 by welding. After the concrete 17 is poured on the first steel reinforcement frame 14 and solidifies, the support bars 5 are located on the upper surface of the base plate 11. In this embodiment, there are two sets of support bars 5. The two sets of support bars 5 are respectively set at the inner arc edge and the outer arc edge of the upper surface of the base plate 11. Each set of support bars 5 has multiple bars, and the multiple support bars 5 are arranged at intervals along the arc of the base plate 11.

[0054] Reference Figure 4 , Figure 5 , Figure 7 The support bar 5 is used to connect to the second steel reinforcement frame 4. In this embodiment, the top wall of the support bar 5 is fixedly equipped with a first fixing sleeve 56 and a second fixing sleeve 57. The first fixing sleeve 56 and the second fixing sleeve 57 are arranged at intervals along the radial direction of the base plate 11. The second steel reinforcement frame 4 includes a first vertical rod 41, a second vertical rod 42, a first horizontal bar 43, and a second horizontal bar 44. The first vertical rod 41 and the second vertical rod 42 are both vertically arranged. Multiple first vertical rods 41 and the second vertical rod 42 are arranged at intervals along the arc of the base plate 11. The support bar 5 and the first vertical rod 41 The number of second vertical rods 42 is set accordingly; the lower end of the first vertical rod 41 is inserted into the first fixing sleeve 56 of the corresponding support bar 5, and the first vertical rod 41 is connected to the support bar 5 (i.e., the base plate 11) through the first fixing sleeve 56; the lower end of the second vertical rod 42 is inserted into the second fixing sleeve 57 of the corresponding support bar 5, and the second vertical rod 42 is connected to the support bar 5 (i.e., the base plate 11) through the second fixing sleeve 57; it should be noted that the first vertical rod 41 and the first fixing sleeve 56, and the second vertical rod 42 and the second fixing sleeve 57 are welded and fixed.

[0055] Reference Figure 4 , Figure 5 , Figure 7 In this embodiment, multiple first horizontal bars 43 and multiple second horizontal bars 44 are provided along the arc of the base plate 11. Multiple first horizontal bars 43 and multiple second horizontal bars 44 are provided correspondingly. One end of the first horizontal bar 43 is connected to the first vertical bar 41 and the other end is connected to the second vertical bar 42. One end of the second horizontal bar 44 is connected to the second vertical bar 42 and the other end is connected to the first vertical bar 41. The first horizontal bars 43 and the corresponding second horizontal bars 44 are arranged in a cross pattern.

[0056] Reference Figure 4 , Figure 7 It should be noted that multiple first horizontal bars 43 and second horizontal bars 44 are provided along the length direction of the first vertical bar 41. Both ends of the first horizontal bar 43 and both ends of the second horizontal bar 44 are provided with through grooves 45. The through grooves 45 are strip-shaped grooves. Both ends of the through grooves 45 extend along the length direction of the first horizontal bar 43 or the length direction of the second horizontal bar 44. The through grooves 45 are used for the first vertical bar 41 or the second vertical bar 42 to pass through.

[0057] Multiple support rings 46 are fitted onto the outer peripheral walls of the first vertical rod 41 and the second vertical rod 42. The support rings 46 are used to support the first horizontal bar 43 or the second horizontal bar 44. The support rings 46 are provided with connectors and are installed on the first vertical rod 41 or the second vertical rod 42 through the connectors. In this embodiment, the peripheral wall of the support rings 46 has a limiting hole 461. The connectors include connecting bolts 47. The connecting bolts 47 pass through the limiting hole 461 and abut against the outer peripheral wall of the first vertical rod 41 or the second vertical rod 42. The connecting bolts 47 are threadedly connected to the limiting hole 461.

[0058] It should be noted that after the side plate 13 is formed, the upper surfaces of the first vertical bar 41 and the second vertical bar 42 are both higher than the top wall of the side plate 13, so as to be used for welding the third steel reinforcement frame.

[0059] The implementation principle of Embodiment 1 of this application is as follows: the arc pipe 1 is made by cast-in-place, which can be cast in place according to the turning angle between two straight segments to adapt to the two straight segments, so that the pipe gallery can adapt to different angles of turning during installation and improve the adaptability of the overall structure; the combination of the first vertical rod 41, the second vertical rod 42, the first horizontal bar 43 and the second horizontal bar 44 serves as the skeleton of the side plate 13, which greatly improves the structural strength of the side plate 13; the lower ends of the first vertical rod 41 and the second vertical rod 42 are connected to the support bar 5, thereby connecting to the first steel reinforcement frame 14, and the upper ends of the first vertical rod 41 and the second vertical rod 42 are exposed on the side plate 13 and used to connect with the third steel reinforcement frame, so that after the arc pipe 1 is formed, the first steel reinforcement frame 14, the second steel reinforcement frame 4 and the third steel reinforcement frame are connected as one, which greatly improves the structural strength of the arc pipe 1.

[0060] Example 2:

[0061] This application discloses a construction method for connecting precast jacking tunnels and cast-in-place tunnels.

[0062] Reference Figure 8 The difference between the precast jacking tunnel and cast-in-place tunnel connection construction method disclosed in this application and Example 1 is as follows:

[0063] In this embodiment, each support bar 5 has a movable groove 52 on its top wall. The length direction of the movable groove 52 coincides with the radial direction of the base plate 11. The movable groove 52 is slidably installed with a first movable sleeve 53 and a second movable sleeve 54. The first movable sleeve 53 is used for the first vertical rod 41 to be matched and inserted. The first vertical rod 41 is slidably installed on the support bar 5 through the first movable sleeve 53. The second movable sleeve 54 is used for the second vertical rod 42 to be matched and inserted. The second vertical rod 42 is slidably installed on the support bar 5 through the second movable sleeve 54.

[0064] Reference Figure 8 A docking sleeve 51 is rotatably mounted on the inner wall of the moving groove 52. The docking sleeve 51 is located between the first moving sleeve 53 and the second moving sleeve 54. A driving assembly 6 is provided between the first vertical rod 41 and the second vertical rod 42. The driving assembly 6 is used to drive the first vertical rod 41 and the second vertical rod 42 to move closer to each other or further away from each other. In this embodiment, the driving assembly 6 includes a driving rod 61, a driving gear 62 and a driving rack 63. The driving rod 61 is vertically arranged and is located between the first vertical rod 41 and the corresponding second vertical rod 42. The lower end of the driving rod 61 is matched and inserted into the docking sleeve 51 and welded and fixed to the docking sleeve 51 so that the driving rod 61 and the docking sleeve 51 are circumferentially linked (that is, when the driving rod 61 rotates, it can drive the docking sleeve 51 to rotate). The upper end of the driving rod 61 is integrally formed with a rotating head 611. The cross-sectional shape of the rotating head 611 is polygonal. The rotating head 611 is used to dock with tools such as handwheels or electric drills to drive the driving rod 61 to rotate around its own axis.

[0065] Reference Figure 8 The drive gear 62 is coaxially fixed to the outer peripheral wall of the drive rod 61. There are two drive racks 63. One end of one drive rack 63 is fixedly connected to the support ring 46 of the first vertical rod 41, and the other end of the drive rack 63 is fixedly connected to the support ring 46 of the second vertical rod 42. In this embodiment, the drive gear 62 and the two drive racks 63 are meshed and transmitted. When the drive rod 61 is rotated, the two drive racks 63 can move closer to each other or further away from each other.

[0066] The implementation principle of Embodiment 2 of this application is as follows: After the second steel reinforcement frame 4 is erected, concrete 17 is poured into the side pouring area 161. During the pouring of concrete 17, the drive rod 61 is rotated by a tool, which can drive the first vertical rod 41 and the second vertical rod 42 to move closer or further away from each other. By controlling the drive rod 61 to repeatedly rotate forward and backward, the first vertical rod 41 and the second vertical rod 42 are driven to slide back and forth, so that the first vertical rod 41, the second vertical rod 42, the first horizontal bar 43 and the second horizontal bar 44 can stir the concrete 17 to remove air bubbles mixed in the concrete 17 and improve the pouring effect of concrete 17.

[0067] Example 3:

[0068] This application discloses a construction method for connecting precast jacking tunnels and cast-in-place tunnels.

[0069] Reference Figure 9 The difference between the precast jacking tunnel and cast-in-place tunnel connection construction method disclosed in this application and Example 2 is as follows:

[0070] In this embodiment, the driving assembly 6 includes a driving rod 61, a rotating disk 64, and docking posts 65. The structure of the driving rod 61 is the same as that of the driving rod 61 in embodiment 2, and will not be described again here. The rotating disk 64 is coaxially fixed to the outer peripheral wall of the driving rod 61. The upper surface of the rotating disk 64 is provided with a docking ring groove 641, which is elliptical in shape. There are two docking posts 65. One end of one docking post 65 is fixedly connected to the support ring 46 of the first vertical rod 41, and the other end of the other docking post 65 is fixedly connected to the support ring 46 of the second vertical rod 42. Both docking posts 65 are slidably inserted into the docking ring groove 641 of the rotating disk 64.

[0071] The implementation principle of Embodiment 3 of this application is as follows: After the second steel reinforcement frame 4 is erected, concrete 17 is poured into the side pouring area 161. During the pouring of concrete 17, the drive rod 61 is driven to rotate by a tool. The rotating disk 64 can drive the two docking columns 65 to move closer or further away from each other through the inner wall of the docking ring groove 641, thereby driving the first vertical rod 41 and the second vertical rod 42 to move closer or further away from each other. By continuously driving the drive rod 61 to rotate, the docking ring groove 641 can drive the first vertical rod 41 and the second vertical rod 42 to continuously slide back and forth, so that the first vertical rod 41, the second vertical rod 42, the first horizontal bar 43 and the second horizontal bar 44 can agitate the concrete 17 to remove air bubbles mixed in the concrete 17, improve the pouring effect of concrete 17, and improve the ease of operation of agitating concrete 17.

[0072] Example 4:

[0073] This application discloses a construction method for connecting precast jacking tunnels and cast-in-place tunnels.

[0074] Reference Figure 10 The difference between the precast jacking tunnel and cast-in-place tunnel connection construction method disclosed in this application and Example 3 is as follows:

[0075] In this embodiment, a striking element 7 is provided between the docking sleeve 51 and the support bar 5. When the docking sleeve 51 rotates, the striking element 7 is used to make the support bar 5 vibrate. The striking element 7 includes a vibrating plate 71 and a cam 72. The vibrating plate 71 is vertically arranged, and the lower side of the vibrating plate 71 is fixedly connected to the inner wall of the moving groove 52 of the support bar 5. Multiple vibrating plates 71 are spaced apart around the axial direction of the docking sleeve 51. The cam 72 is fixedly installed on the outer peripheral wall of the docking sleeve 51. When the docking sleeve 51 rotates, the outer peripheral wall of the cam 72 strikes the vibrating plate 71.

[0076] The implementation principle of Embodiment 4 of this application is as follows: When the drive rod 61 rotates, the second steel reinforcement frame 4 stirs the concrete 17. During this process, the drive rod 61 drives the docking sleeve 51 to rotate. The cam 72 on the docking sleeve 51 can beat the vibrating plate 71 during rotation, thereby generating vibration, reducing the possibility of air bubbles mixed in the concrete 17, and thus improving the quality of concrete 17 pouring.

[0077] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A construction method for connecting precast jacking pipe galleries and cast-in-place pipe galleries, characterized by: The pipe gallery includes an arc pipe (1) and two straight sections, the straight sections including multiple straight pipes (2) connected end to end; the arc pipe (1) includes a bottom plate (11), a top plate (12) and two side plates (13), the bottom plate (11), the top plate (12) and the two side plates (13) are all arc-shaped, the two side plates (13) are respectively set on the inner arc edge and the outer arc edge of the upper surface of the bottom plate (11), the top plate (12) is set between the two side plates (13), and the bottom plate (11), the top plate (12) and the two side plates (13) are combined to form the arc pipe (1); the construction method for connecting the precast jacking pipe gallery and the cast-in-place pipe gallery includes the following Steps: S1. Excavation of the construction trench (3): According to the planning design, the construction trench (3) is excavated on the ground; S2. Laying of straight sections: On the inner wall of the construction trench (3), the straight pipe (2) is jacked into the soil section by section according to the design route using jacking equipment. According to the turning angle of the pipe gallery planning design, the straight pipe (2) is jacked into the soil on different side walls of the construction trench (3) to form two straight sections; S3. Fabrication of the base plate (11): The first steel reinforcement frame (14) is laid on the bottom wall of the construction trench (3), and concrete (17) is poured. After the concrete (17) solidifies, the base plate (11) is formed; S4. Fabrication of side plates (13): On the base plate (11) The second steel reinforcement frame (4) is arranged at the inner and outer arc edges respectively, and concrete (17) is poured respectively. After the concrete (17) solidifies, the two side plates (13) are formed; S5, the construction of the top plate (12): The third steel reinforcement frame is arranged between the two side plates (13), and concrete (17) is poured. After the concrete (17) solidifies, the top plate (12) is formed; S6, the backfilling of the construction trench (3); After the second steel reinforcement frame (4) is arranged in step S4, the side baffle (16) is installed on the upper surface of the bottom plate (11). The side baffle (16) is used to enclose the second steel reinforcement frame (4) to form The second steel reinforcement frame (4) includes a first vertical rod (41), a second vertical rod (42), a first horizontal bar (43) and a second horizontal bar (44). The lower ends of the first vertical rod (41) and the second vertical rod (42) are connected to the bottom plate (11). The first vertical rod (41) and the second vertical rod (42) are arranged in multiple intervals along the arc of the bottom plate (11). The multiple first vertical rods (41) are arranged in correspondence with the multiple second vertical rods (42). Each first vertical rod (41) and the corresponding second vertical rod (42) are arranged in a radial interval along the bottom plate (11).Multiple first horizontal bars (43) and second horizontal bars (44) are arranged along the arc of the base plate (11). Multiple first horizontal bars (43) and multiple second horizontal bars (44) are correspondingly arranged. One end of each first horizontal bar (43) is connected to a first vertical bar (41), and the other end is connected to a second vertical bar (42). One end of each second horizontal bar (44) is connected to a second vertical bar (42), and the other end is connected to a first vertical bar (41). The first horizontal bars (43) and the corresponding second horizontal bars (44) are arranged in a crisscross pattern. Both the first horizontal bars (43) and the second horizontal bars (44) are arranged along the arc of the first vertical bar (41). Multiple vertical rods are provided along their length. Both ends of the first horizontal bar (43) and both ends of the second horizontal bar (44) are provided with through slots (45). These through slots (45) are for the first vertical rod (41) or the second vertical rod (42) to pass through. Multiple support rings (46) are fitted onto the outer periphery of both the first vertical rod (41) and the second vertical rod (42). These support rings (46) are used to support the first horizontal bar (43) or the second horizontal bar (44). Each support ring (46) has a connecting piece, and the support ring (46) is installed on the first vertical rod (41) or the second vertical rod (42) through the connecting piece.

2. The construction method for connecting precast jacking pipe gallery and cast-in-place pipe gallery according to claim 1, characterized in that: After the first steel bar frame (14) is laid out in step S3, support bars (5) are installed on the first steel bar frame (14). Multiple support bars (5) are arranged at intervals along the arc of the base plate (11). The number of support bars (5), first vertical rod (41) and second vertical rod (42) are arranged accordingly. The first vertical rod (41) and the corresponding second vertical rod (42) are slidably installed on the corresponding support bar (5). A driving component (6) is provided between the first vertical rod (41) and the second vertical rod (42). The driving component (6) is used to drive the first vertical rod (41) and the second vertical rod (42) to move closer to each other or further away from each other.

3. The construction method for connecting precast jacking pipe gallery and cast-in-place pipe gallery according to claim 2, characterized in that: The drive assembly (6) includes a drive rod (61), a drive gear (62), and a drive rack (63). The drive rod (61) is vertically installed between the first vertical rod (41) and the corresponding second vertical rod (42). The upper end of the drive rod (61) is provided with a rotating head (611) for driving the drive rod (61) to rotate. The drive gear (62) is disposed on the outer peripheral wall of the drive rod (61). There are two drive racks (63). The two drive racks (63) are respectively connected to the first vertical rod (41) and the second vertical rod (42), and both drive racks (63) mesh with the drive gear (62) for transmission. When the drive rod (61) is rotated, the two drive racks (63) move closer to each other or further away from each other.

4. The construction method for connecting precast jacking pipe gallery and cast-in-place pipe gallery according to claim 2, characterized in that: The driving assembly (6) includes a driving rod (61), a rotating disk (64), and docking posts (65). The driving rod (61) is vertically installed between the first vertical rod (41) and the corresponding second vertical rod (42). The upper end of the driving rod (61) is provided with a rotating head (611) for driving the driving rod (61) to rotate. The rotating disk (64) is disposed on the outer peripheral wall of the driving rod (61). The surface of the rotating disk (64) is provided with a docking ring groove (641), which is elliptical in shape. There are two docking posts (65). The two docking posts (65) are respectively connected to the first vertical rod (41) and the second vertical rod (42), and both docking posts (65) are slidably inserted into the docking ring groove (641).

5. The construction method for connecting precast jacking pipe gallery and cast-in-place pipe gallery according to claim 4, characterized in that: The top wall of the support bar (5) is rotatably mounted with a docking sleeve (51), and the lower end of the drive rod (61) is matched and inserted into the docking sleeve (51) and is circumferentially linked with the docking sleeve (51); a striking element (7) is provided between the docking sleeve (51) and the support bar (5). When the docking sleeve (51) rotates, the striking element (7) is used to make the support bar (5) vibrate.

6. The construction method for connecting precast jacking tunnels and cast-in-place tunnels according to claim 5, characterized in that: The striking component (7) includes a vibrating plate (71) and a cam (72). The vibrating plate (71) is disposed on the top wall of the support bar (5) and is provided in multiple axial spaces around the docking sleeve (51). The cam (72) is fixed to the outer peripheral wall of the docking sleeve (51). When the docking sleeve (51) rotates, the outer peripheral wall of the cam (72) strikes the vibrating plate (71).

7. The construction method for connecting precast jacking pipe gallery and cast-in-place pipe gallery according to claim 2, characterized in that: The top wall of the support bar (5) is provided with a moving groove (52), the length direction of the moving groove (52) coincides with the radial direction of the base plate (11); the moving groove (52) is slidably installed with a first moving sleeve (53) and a second moving sleeve (54), the first moving sleeve (53) is used for the first vertical rod (41) to be matched and inserted, the first vertical rod (41) is slidably installed on the support bar (5) through the first moving sleeve (53), the second moving sleeve (54) is used for the second vertical rod (42) to be matched and inserted, the second vertical rod (42) is slidably installed on the support bar (5) through the second moving sleeve (54).

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