A device and method for constructing the secondary lining of the anchor chamber vault of a suspension bridge tunnel

Abstract

The present invention belongs to the technical field of bridge construction equipment, and specifically provides a kind of equipment and method for the construction of the secondary lining of the anchor chamber vault of a suspension bridge tunnel, comprising a trolley, a gantry, a movable track, a traction unit, and a construction template, wherein the construction template is connected to the outside of the trolley, and the trolley, the gantry and the traction unit are connected in sequence, and the trolley and the gantry are both connected to the movable track, which solves the problem that during the construction of the secondary lining vault of the anchor chamber in front of the existing tunnel anchor, the amount of scaffolding work is large, the full-chamber bracket and the arc-shaped vault support of the front anchor chamber are in an unstable state, the force is easily offset during concrete pouring, resulting in eccentric loading of the full-chamber bracket, the construction process is difficult to control, and there are potential safety hazards in the construction. The equipment and method have simple structure, convenient use, safe construction, and can meet the construction needs.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction equipment, and in particular relates to a device and a method for constructing a secondary lining of an anchor chamber vault of a suspension bridge tunnel. Background Art

[0002] In the construction of the secondary lining of the anchorage room of the suspension bridge tunnel, the large lining trolley used for the tunnel secondary lining cannot be used because the anchorage tunnel is an inclined structure and the tunnel slope is large. According to previous experience, the second lining of the front anchorage room of the tunnel anchorage is generally poured with a full-chamber scaffolding support formwork system. Since the anchoring system has been completed during the construction of the second lining of the front anchorage room, and the spacing between the main cable strands at the anchor point is small, the full-chamber scaffolding must pass through the main cable, and the construction process is very likely to cause damage to the main cable. In addition, the space volume of the front anchorage room of the Jin'an Jinsha River Bridge of the Huali Expressway is large, and the scaffolding construction volume is large. At the same time, the arch of the front anchorage room is a circular arch, and the angle with the horizontal is 42°. The full-chamber support and the circular arch support are in an unstable state. The force is easy to deviate during the concrete pouring, causing the full-chamber support to be overloaded. The construction process is difficult to control and there are safety hazards in the construction.

[0003] In order to solve the problem of construction of the secondary lining vault of the anchor chamber before the tunnel anchor, a secondary lining concrete pouring construction equipment for the anchor chamber vault is designed to simplify the construction and improve the construction safety. Summary of the invention

[0004] The present invention provides a device and method for constructing a secondary lining of an anchor chamber vault in a suspension bridge tunnel, with the aim of overcoming the problem in the prior art that, during the construction of the secondary lining vault of the anchor chamber in front of the tunnel anchor, the workload of erecting scaffolds is large, the full-chamber bracket and the arc-shaped vault support of the front anchor chamber are in an unstable state, the force is easily offset during concrete pouring, resulting in eccentric loading of the full-chamber bracket, the construction process is difficult to control, and there are potential safety hazards during construction.

[0005] To this end, the present invention provides a secondary lining construction equipment for the arch of the anchor chamber of a suspension bridge tunnel, including a trolley, a frame, a movable track, a traction unit, and a construction template. The construction template is connected to the outside of the trolley, the trolley, the frame and the traction unit are connected in sequence, and the trolley and the frame are both connected to the movable track.

[0006] The traction unit comprises a traction machine, a traction wire rope and a steering wheel, and the platform, the steering wheel and the traction machine are connected in sequence through the traction wire rope; the traction machine is a traction winch or a hand winch.

[0007] The trolley also includes a shifter, and the trolley is connected to the moving track through the shifter.

[0008] It also includes two groups of hangers, which are horizontally and symmetrically distributed on the left and right walls of the front anchor room. The hangers are connected with movable tracks along the axis direction of the front anchor room.

[0009] The utility model also comprises a jack, wherein the bottom of the jack is connected to the top of the hanging bracket, and the top of the jack is in contact with the bottom of the trolley.

[0010] The hanger also includes a hanger seat and an embedded part. The hanger is connected to the embedded part through the hanger seat, and the embedded part is connected to the side wall of the front anchor chamber.

[0011] A guardrail is arranged on the air-facing side of the platform.

[0012] The trolley includes multiple arch frames and cross-connections. The multiple arch frames are distributed at equal intervals from front to back, and are connected by cross-connections. Each arch frame includes a cross brace, a left diagonal brace, a right diagonal brace, a first connecting plate and a second connecting plate. The left end of the left diagonal brace is connected to the arch frame through the second connecting plate, the right end of the left diagonal brace and the left end of the cross brace are connected through the first connecting plate, the right end of the cross brace and the left end of the right diagonal brace are connected through the first connecting plate, and the right end of the right diagonal brace is connected through the second connecting plate. The cross brace is horizontally located on the upper inner side of the arch frame, and the left diagonal brace and the right diagonal brace are symmetrically distributed on the lower inner side of the arch frame.

[0013] The first connecting plate and the second connecting plate are both welded to the arch frame, and the cross brace and the first connecting plate, the left diagonal brace and the first connecting plate and the second connecting plate, and the right diagonal brace and the first connecting plate and the second connecting plate are all connected by bolts.

[0014] A method for constructing a secondary lining of an anchor chamber vault in a suspension bridge tunnel, specifically comprising the following steps: a traction machine pulls a gantry to a pre-constructed vault position to install waterproof panels and steel bars, and after completion, pulls a trolley to the installation position, and after the trolley is in place, lifts the trolley and the construction template as a whole to the installation position of the construction template, adjusts the construction template, and after confirming that it is consistent with the designed position, fixes the trolley and the construction template, and then pours concrete to complete the pouring of one section of the vault, and after the poured concrete has a curing period, lowers the trolley to a mobile track, and the traction machine pulls the trolley to the next section for construction

[0015] Beneficial effects of the present invention: The equipment provided by the present invention for the construction of the second lining of the arch of the anchor room of the suspension bridge tunnel includes a trolley, a trolley, a mobile track, a traction unit, and a construction template. The construction template is welded and connected to the outside of the trolley. The construction template adopts a steel template. The trolley, the trolley and the traction unit are connected in sequence. The trolley and the trolley move on the mobile track through a shifter. The trolley is towed to the pre-construction arch position by a traction machine, and a waterproof plate and steel bars are installed. After completion, the trolley is towed to the position. After the trolley is in place, the trolley and the construction template are lifted up as a whole to the installation position of the construction template. The construction template is adjusted. After confirming that it is consistent with the design position, a pad is placed at the bottom of the trolley arch frame to make it solid. The trolley and the construction template are fixed, and then concrete is poured to complete the pouring of one section of the arch. After the concrete curing period, the bottom pad of the trolley is removed, the trolley is placed on the shifter, and it is towed to the next section for construction. The present invention converts the conventional steel pipe support formwork system into a trolley formwork system (trolley and construction formwork) for concrete pouring construction. The construction process has no contact with the main cable, thereby avoiding damage to the main cable during the construction process. At the same time, there is no need to invest in large quantities of steel pipe materials, thereby maximizing the savings in construction costs. The trolley is moved in the moving track by traction wire rope, and traction is convenient. After the concrete pouring of the current section is completed, the installation of steel bars and waterproof boards for the next construction section can be started immediately. The construction is safe and efficient, and the operation is practical. It can solve the problem of insufficient safety and reliability of full-hall support construction and create good construction economic benefits for the project. The invention has a good application effect under the conditions of first constructing the anchor system and then constructing the second lining of the anchor chamber, and is worthy of further promotion and application in similar projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 It is used for the construction of the second lining of the arch of the anchor room of the suspension bridge tunnel. Front view of the arch section construction equipment

[0018] Figure 2 It is a side view of the construction of the arch section of the secondary lining construction equipment for the arch of the anchor room of the suspension bridge tunnel;

[0019] Figure 3 It is the main view of the arch structure;

[0020] Figure 4 It is a top view of the trolley structure;

[0021] Figure 5 It is a side view of the bench structure;

[0022] Figure 6 It is the main view of the stand structure.

[0023] Explanation of the accompanying drawings: 1. trolley; 2. platform; 3. moving track; 4. shifter; 5. traction machine; 6. traction wire rope; 7. hanger; 8. jack; 9. hanger; 10. embedded parts; 11. construction template; 12. steering wheel; 1-1. arch frame; 1-2. cross connection; 1-3. cross brace; 1-4. left diagonal brace; 1-5. right diagonal brace; 1-6. first connecting plate; 1-7. second connecting plate; 2-1. platform arch frame; 2-2. platform cross connection; 2-3. first cross connection; 2-4. second cross connection; 2-5. first diagonal brace; 2-6. second diagonal brace; 2-7. third diagonal brace; 2-8. guardrail. DETAILED DESCRIPTION

[0024] Embodiment 1:

[0025] like Figure 1 and Figure 2 As shown, a device for constructing the secondary lining of the arch of the anchor chamber of a suspension bridge tunnel includes a trolley 1, a frame 2, a movable track 3, a traction unit, and a construction template 11. The construction template 11 is connected to the outside of the trolley 1, the trolley 1, the frame 2 and the traction unit are connected in sequence, and the trolley 1 and the frame 2 are both connected to the movable track 3.

[0026] The gantry 2 is towed to the pre-construction arch position by the traction unit, and the waterproof board and steel bars are installed. After completion, the trolley 1 is towed to the position. After the trolley 1 is in place, the trolley 1 and the construction template 11 are lifted up as a whole to the construction template installation position, and the construction template 11 is adjusted. After confirming that it is consistent with the designed position, the bottom of the trolley 1 is padded with a pad, the trolley 1 and the construction template 11 are fixed, and then concrete is poured to complete the pouring of one section of the arch. After the concrete curing period, the pad at the bottom of the trolley is removed, the trolley 1 is placed on the mobile track, and is towed to the next section for construction; the construction template is a steel template; the present invention converts a conventional steel pipe support template system into a trolley template system (trolley and The trolley 1 is moved in the moving track by the traction unit, and the traction is convenient. After the concrete pouring of the current section is completed, the installation of steel bars and waterproof panels in the next construction section can be started immediately. The construction is safe and efficient, and the operation is practical. It can solve the problem of insufficient safety and reliability of full-hall bracket construction and create good construction economic benefits for the project. The invention has a good application effect under the conditions of constructing the anchoring system first and then constructing the secondary lining of the anchor chamber, and it is worthy of further promotion and application in similar projects.

[0027] Embodiment 2:

[0028] On the basis of Example 1, the traction unit includes a traction machine 5, a traction wire rope 6, and a steering wheel 12. The platform 2, the steering wheel 12, and the traction machine 5 are connected in sequence through the traction wire rope 6; the traction machine 5 is a traction winch or a hand chain hoist. The traction machine 5 is arranged at the tunnel anchor hole portal or the tunnel anchor hole portal. The number of traction machines 5 can be adjusted according to actual conditions. For example, two traction machines are used for traction, each with four lines, and the hand chain hoist is used as a backup. The structure is simple and the adaptability is strong. The traction winch is faster than the hand chain hoist and the construction is stable. The hand chain hoist is relatively simple in equipment and can be selected according to actual conditions. It has strong adaptability.

[0029] The trolley 1 further comprises a shifter 4, and the trolley 1 is connected to the moving track 3 via the shifter 4. The shifter 4 facilitates the trolley 1 to slide on the moving track, reduces friction, saves time and effort, and improves work efficiency.

[0030] like Figure 5 As shown, the air-facing side of the platform 2 is provided with guardrails 2-8. The platform 2 is welded as a whole with steel sections, and the air-facing side is provided with guardrails 2-8 for protection, which has a simple and stable structure, reduces costs, and has high safety. Figure 5 and Figure 6 As shown, the platform includes multiple platform arch frames 2-1 and platform cross-links 2-2. The multiple platform arch frames 2-1 are connected by the platform cross-links 2-2 from front to back. Each platform arch frame 2-1 includes a first cross-link 2-3, a second cross-link 2-4, a first diagonal brace 2-5, a second diagonal brace 2-6 and a third diagonal brace 2-7. The first cross-link 2-3 is horizontally connected to the upper part of the platform arch frame 2-1, and the second cross-link 2-4 is horizontally symmetrically connected to the left and right sides of the middle of the platform arch frame 2-1. The left end of the first cross-link 2-3 and the right end of the second cross-link 2-4 on the left side of the middle of the platform arch frame 2-1, and the right end of the first cross-link 2-3 and the second cross-link 2-4 on the right side of the middle of the platform arch frame 2-1 are connected. The left ends of the two cross-links 2-4 are connected by brackets, the left end of the platform arch 2-1 and the right end of the second cross-link 2-4 on the left side of the middle part of the platform arch 2-1, and the right end of the platform arch 2-1 and the left end of the second cross-link 2-4 on the right side of the middle part of the platform arch 2-1 are connected by the first diagonal brace 2-5, the left part of the first cross-link 2-3 and the right end of the second cross-link 2-4 on the left side of the middle part of the platform arch 2-1, and the right part of the first cross-link 2-3 and the left end of the second cross-link 2-4 on the right side of the middle part of the platform arch 2-1 are connected by the second diagonal brace 2-6, and the top of the platform arch 2-1 is respectively connected to the left and right parts of the first cross-link 2-3 by the third diagonal brace 2-7. The first cross-link 2-3, the second cross-link 2-4, the first diagonal brace 2-5, the second diagonal brace 2-6 and the third diagonal brace 2-7 strengthen the platform arch 2-1, and the structure is simple and stable.

[0031] Embodiment 3:

[0032] On the basis of Example 2, it also includes hangers 7, the number of which is 2 groups and the 2 groups of hangers 7 are horizontally symmetrically distributed on the left and right walls of the front anchor room, and the upper surface of the hangers 7 is connected to the movable track 3 along the axis direction of the front anchor room. The number of hangers is determined according to the calculation results of the construction force of the trolley. In this project, there are 6 hangers in 2 groups under the trolley, 3 hangers on each side, and symmetrically distributed left and right; the movable track 3 is a sliding track, which is made of channel steel and arranged on the hangers 7 on the left and right side walls of the front anchor room. The upper surface of the hangers 7 on the left wall and the upper surface of the hangers 7 on the right wall must be on the same plane to ensure that the sliding track and the hangers are all tightly attached to facilitate the movement of the trolley.

[0033] It also includes a jack 8, the bottom of the jack 8 is connected to the top of the bracket 7, and the top of the jack 8 is in contact with the bottom of the trolley 1. The jack 8 has a simple structure, light weight, is easy to carry, and is easy to move. It can lift and lower the trolley and the construction template well, and the operation is simple and stable.

[0034] The hanger 7 also includes a hanger 9 and an embedded part 10. The hanger 7 is connected to the embedded part 10 through the hanger 9. The embedded part 10 is embedded in the side wall of the front anchor chamber. The embedded part 10 is embedded during the construction of the side wall of the front anchor chamber. The connection adopts a climbing cone and embedded steel bars, which is convenient for installation and removal. The hanger 7 used is modified from an existing hanger, and can also be processed by itself according to actual conditions.

[0035] Embodiment 4:

[0036] like Figure 3 and Figure 4 As shown, on the basis of Example 3, the trolley 1 includes multiple arch frames 1-1 and cross links 1-2, the multiple arch frames 1-1 are distributed in equal intervals from front to back, and the multiple arch frames 1-1 are connected by cross links 1-2; each arch frame 1-1 includes a cross brace 1-3, a left diagonal brace 1-4, a right diagonal brace 1-5, a first connecting plate 1-6 and a second connecting plate 1-7, and the left end of the left diagonal brace 1-4 is connected to the second connecting plate 1-7 The arch frame 1-1, the right end of the left diagonal brace 1-4 and the left end of the horizontal brace 1-3 are connected through the first connecting plate 1-6, the right end of the horizontal brace 1-3 and the left end of the right diagonal brace 1-5 are connected through the first connecting plate 1-6, and the right end of the right diagonal brace 1-5 is connected through the second connecting plate 1-7. The horizontal brace 1-3 is horizontally located on the inner side of the upper part of the arch frame 1-1, and the left diagonal brace 1-4 and the right diagonal brace 1-5 are symmetrically distributed on the inner side of the lower part of the arch frame 1-1. The horizontal brace 1-3, the left diagonal brace 1-4, and the right diagonal brace 1-5 are arranged to strengthen the arch frame 1-1, and the structure is simple and stable.

[0037] The first connecting plate 1-6 and the second connecting plate 1-7 are both welded to the arch frame 1-1, and the cross brace 1-3 and the first connecting plate 1-6, the left diagonal brace 1-4 and the first connecting plate 1-6 and the second connecting plate 1-7, and the right diagonal brace 1-5 and the first connecting plate 1-6 and the second connecting plate 1-7 are all connected by bolts. The first connecting plate 1-6 and the second connecting plate 1-7 are both welded to the arch frame 1-1, and the welding connection ensures that the cross brace 1-3 and the left diagonal brace 1-4 or the right diagonal brace 1-5 are firmly connected to the arch frame 1-1, thereby improving the overall stability of the structure; the cross brace 1-3 and the first connecting plate 1-6, the left diagonal brace 1-4 and the first connecting plate 1-6 and the second connecting plate 1-7, and the right diagonal brace 1-5 and the first connecting plate 1-6 and the second connecting plate 1-7 are all connected by bolts, which is convenient for installation and disassembly, and the operation is simple and convenient.

[0038] Embodiment 5:

[0039] A method for constructing a secondary lining of an anchor chamber vault in a suspension bridge tunnel, wherein a traction machine 5 pulls a gantry 2 to a pre-constructed vault position to install waterproof panels and steel bars, and after completion, a trolley 1 is pulled to the installation position, and after the trolley 1 is in place, the trolley 1 and a construction template 11 are lifted as a whole to the installation position of the construction template, and the construction template 11 is adjusted to confirm that it is consistent with the designed position, and then the trolley 1 and the construction template 11 are fixed, and then concrete is poured to complete the pouring of one section of the vault, and after the poured concrete has a curing period, the trolley 1 is lowered onto a movable track 3, and the traction machine 5 pulls the trolley 1 to the next section for construction;

[0040] The equipment for the construction of the second lining of the arch of the anchor room of the suspension bridge tunnel provided by the present invention uses a traction machine 5 to pull the platform 2 to the pre-construction arch position, install the waterproof board and steel bars, and then pull the trolley 1 to the position after the completion. After the trolley 1 is in place, the jack 8 is used to lift the trolley 1 and the construction template 11 as a whole to the installation position of the construction template. After the construction template 11 is adjusted correctly, a steel plate is padded at the bottom of the arch frame 1-1 of the trolley 1, the trolley 1 and the construction template 11 are fixed, and then concrete is poured to complete the pouring of one section of the arch. After the concrete curing period, the steel plate at the bottom of the trolley is removed, and the jack 8 lowers the trolley 1 to the shifter 4, and pulls it to the next section for construction; the present invention converts the conventional steel pipe support template system into The trolley formwork system (trolley and construction formwork) is used for concrete pouring construction. There is no contact with the main cable during the construction process, which avoids damage to the main cable during the construction process. At the same time, there is no need to invest in large quantities of steel pipe materials, which maximizes the savings in construction costs. The trolley is moved in the moving track by traction wire rope, and the traction is convenient. After the concrete pouring of the current section is completed, the installation of steel bars and waterproof boards in the next construction section can be started immediately. The construction is safe and efficient, and the operation is practical. It can solve the problem of insufficient safety and reliability in the construction of the full-floor bracket, and create good construction economic benefits for the project. The invention has a good application effect under the conditions of constructing the anchor system first and then constructing the secondary lining of the anchor chamber, and it is worthy of further promotion and application in similar projects.

[0041] In the description of the present invention, it should be understood that if the terms "left", "right", "right" and the like indicate an orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent.

[0042] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A device for constructing the secondary lining of the anchor room arch of a suspension bridge tunnel, characterized by: The invention comprises a trolley (1), a platform (2), a movable track (3), a traction unit, and a construction template (11), wherein the construction template (11) is connected to the outside of the trolley (1), the trolley (1), the platform (2) and the traction unit are connected in sequence, and the trolley (1) and the platform (2) are both connected to the movable track (3); the trolley (1) comprises a plurality of arch frames (1-1) and a cross link (1-2), the plurality of arch frames (1-1) are distributed in sequence at equal intervals from front to back, and the plurality of arch frames (1-1) are connected by the cross link (1-2); each arch frame (1-1) comprises a cross brace (1-3), a left diagonal brace (1-4), a right diagonal brace (1-5), a first connecting plate (1-6) and a second connecting plate (1-2); The left end of the left diagonal brace (1-4) is connected to the arch frame (1-1) through a second connecting plate (1-7), the right end of the left diagonal brace (1-4) and the left end of the cross brace (1-3) are connected through a first connecting plate (1-6), the right end of the cross brace (1-3) and the left end of the right diagonal brace (1-5) are connected through the first connecting plate (1-6), and the right end of the right diagonal brace (1-5) is connected through a second connecting plate (1-7), the cross brace (1-3) is horizontally located on the upper inner side of the arch frame (1-1), and the left diagonal brace (1-4) and the right diagonal brace (1-5) are symmetrically distributed on the lower inner side of the arch frame (1-1); and a guardrail (2-8) is arranged on the air-facing side of the platform (2).

2. The equipment for construction of the second lining of the anchor room arch of a suspension bridge tunnel as claimed in claim 1, characterized in that: The traction unit comprises a traction machine (5), a traction wire rope (6) and a steering wheel (12); the platform (2), the steering wheel (12) and the traction machine (5) are connected in sequence through the traction wire rope (6); the traction machine (5) is a traction winch or a hand winch.

3. The equipment for construction of the second lining of the anchor room arch of a suspension bridge tunnel as claimed in claim 1, characterized in that: The trolley (1) further comprises a shifter (4), and the trolley (1) is connected to the movable track (3) via the shifter (4).

4. The equipment for construction of the second lining of the anchor chamber vault of a suspension bridge tunnel as claimed in claim 1, characterized in that: It also includes hanging racks (7), the number of the hanging racks (7) is 2 groups, and the two groups of hanging racks (7) are horizontally and symmetrically distributed on the left wall and the right wall of the front anchor room, and the hanging racks (7) are connected to the movable track (3) along the axis direction of the front anchor room.

5. The equipment for constructing the second lining of the anchor room arch of a suspension bridge tunnel as claimed in claim 4, characterized in that: It also includes a jack (8), the bottom of the jack (8) is connected to the top of the hanger (7), and the top of the jack (8) is in contact with the bottom of the trolley (1).

6. The equipment for constructing the second lining of the anchor room arch of a suspension bridge tunnel as claimed in claim 4, characterized in that: The hanger (7) further comprises a hanger seat (9) and an embedded part (10); the hanger (7) is connected to the embedded part (10) via the hanger seat (9); and the embedded part (10) is embedded in the side wall of the front anchor chamber.

7. The equipment for construction of the second lining of the anchor room arch of a suspension bridge tunnel as claimed in claim 1, characterized in that: A guardrail (2-8) is provided on the air-facing side of the platform (2).

8. The equipment for constructing the second lining of the anchor room arch of a suspension bridge tunnel as claimed in claim 7, characterized in that: The first connecting plate (1-6) and the second connecting plate (1-7) are both welded to the arch frame (1-1), and the cross brace (1-3) and the first connecting plate (1-6), the left diagonal brace (1-4) and the first connecting plate (1-6) and the second connecting plate (1-7), and the right diagonal brace (1-5) and the first connecting plate (1-6) and the second connecting plate (1-7) are all connected by bolts.

9. A construction method for the secondary lining construction equipment for the anchor room arch of a suspension bridge tunnel according to claim 5, characterized in that: The specific steps are as follows: the traction machine (5) tractions the platform (2) to the pre-construction arch position to install the waterproof board and steel bars, and after completion, the trolley (1) is tractioned to the installation position, and after the trolley (1) is in place, the trolley (1) and the construction template (11) are lifted up as a whole to the construction template installation position, and the construction template (11) is adjusted to confirm that it is consistent with the design position, and then the trolley (1) and the construction template (11) are fixed, and then concrete is poured to complete the pouring of one section of the arch, and after the poured concrete has a curing period, the trolley (1) is lowered to the movable track (3), and the traction machine (5) pulls the trolley (1) to the next section for construction.

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