CN111622781A - Construction equipment and method for suspension bridge tunnel anchor chamber vault secondary lining - Google Patents

Abstract

The invention belongs to the technical field of bridge construction equipment, and specifically provides a construction equipment and method for the secondary lining of an anchor chamber of a suspension bridge tunnel, including a trolley, a gantry, a moving track, a traction unit, and a construction template. On the outside of the trolley, the trolley, the platform and the traction unit are connected in sequence, and the trolley and the platform are connected on the moving track, which solves the problem of the large amount of scaffolding construction during the construction of the second-lined vault of the existing anchor chamber in front of the tunnel anchor. , the full house support and the arc-shaped vault support of the front anchor room are in an unstable state, and the force is easily offset during concrete pouring, resulting in the eccentric load of the full house support. The structure is simple, the use is convenient, and the construction is safe, which can meet the construction needs.

Description

A kind of construction equipment and method for the second lining of the vault of the anchor chamber of the suspension bridge tunnel

technical field

The invention belongs to the technical field of bridge construction equipment, and in particular relates to a construction equipment and a method for the secondary lining of an anchor chamber of a suspension bridge tunnel.

Background technique

In the construction of the second lining of the tunnel-type anchorage chamber of the suspension bridge, due to the inclined structure of the anchorage tunnel and the large slope of the tunnel, the large-scale lining trolley used for the second lining of the tunnel cannot be used for construction. According to past experience, the second lining of the tunnel-type anchorage front anchor chamber generally adopts the full-house scaffolding bracket formwork system for concrete pouring. Because the anchoring system has been completed during the construction of the second lining of the front anchor room, and the distance between the main cable strands at the anchorage point is small, the scaffolding must pass through the main cable when erecting the full house, and the main cable is easily damaged during the construction process. In addition, the cavern of the anchor chamber in front of the anchorage of the Jinan Jinsha River Bridge on the Huali Expressway is large, and the amount of scaffolding is large. At the same time, the dome of the front anchor room is an arc-shaped vault, and the included angle with the horizontal is 42°. The full-house bracket and the arc-shaped vault support are in an unstable state, and the force is easily displaced during concrete pouring, resulting in the full-house bracket. It is difficult to control the construction process, and there are potential safety hazards in the construction.

In order to solve the construction problem of the second lining vault of the anchor chamber in front of the tunnel anchor, a concrete pouring construction equipment for the second lining of the anchor chamber vault is designed to facilitate the construction and improve the construction safety.

SUMMARY OF THE INVENTION

The invention provides a construction equipment and method for the secondary lining of the arch of the anchor chamber of the suspension bridge tunnel. It is in an unstable state with the arc-shaped dome support of the front anchor room, and the force is easily offset during concrete pouring, resulting in eccentric load of the full-house support. It is difficult to control the construction process, and there are potential safety hazards in construction.

To this end, the present invention provides a construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel, including a trolley, a platform, a moving track, a traction unit, and a construction template. The construction template is connected to the outside of the trolley, and the trolley , the platform and the traction unit are connected in sequence, and the trolley and the platform are connected on the moving track.

The traction unit includes a traction machine, a traction wire rope and a steering wheel, and the platform, the steering wheel and the traction machine are sequentially connected by the traction wire rope; the traction machine is a traction hoist or a chain hoist.

The trolley further includes a shifter, and the trolley is connected to the moving track through the shifter.

It also includes hangers. The number of hangers is 2 groups, and the two sets of hangers are distributed horizontally and symmetrically on the left and right walls of the front anchor room. The hangers are connected to the moving track along the axis of the front anchor room.

It also includes a jack, the bottom of the jack is connected to the top of the hanger, and the top of the jack is connected to the bottom of the trolley.

The hanger also includes a hanger seat and a pre-embedded part, the hanger is connected to the pre-embedded part through the hanger seat, and the pre-embedded part is connected to the side wall of the front anchor chamber.

A guardrail is arranged on the airside side of the platform.

The trolley includes multiple arches and horizontal links, the multiple arches are distributed at equal intervals from front to back, and the multiple arches are connected by horizontal links; each arch includes a horizontal brace, a left oblique brace, a right oblique brace brace, the first connecting plate and the second connecting plate, the left end of the left oblique brace is connected to the arch through the second connecting plate, the right end of the left oblique brace and the left end of the cross brace are connected by the first connecting plate, and the right end of the horizontal brace and the right oblique brace are connected by the first connecting plate. The left end of the brace is connected by the first connecting plate, the right end of the right diagonal brace is connected by the second connecting plate, the transverse 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.

The first connecting plate and the second connecting plate are welded to the arch frame, the horizontal brace is connected to the first connecting plate, the left diagonal brace is connected to the first connecting plate and the second connecting plate, and the right diagonal brace is connected to the first connecting plate and the first connecting plate The two connecting plates are connected by bolts.

A construction method for the second lining of the dome of the anchor chamber of a suspension bridge tunnel, the specific steps are: a tractor pulls a platform to a pre-construction dome position to install a waterproof plate and a steel bar, and after completion, the trolley is pulled to the installation position, and the platform After the car is in place, lift the trolley and the construction formwork as a whole to the installation position of the construction formwork, adjust the construction formwork, confirm that it is consistent with the design position, fix the trolley and the construction formwork, and then pour concrete to complete a section of the vault Concreting, after the poured concrete curing period, lower the trolley to the moving track, and the tractor will pull the trolley to the next stage for construction

Beneficial effects of the present invention: The construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel provided by the present invention includes a trolley, a platform, a moving track, a traction unit, and a construction template, and the construction template is welded and connected to the trolley. On the outside, the construction formwork is made of steel formwork, the trolley, the gantry and the traction unit are connected in sequence, and the trolley and the gantry move on the moving track through the shifter. Pull the platform to the pre-construction vault position by the tractor, install the waterproof plate and steel bar, and pull the trolley to this position after completion. Adjust the construction formwork, confirm that it is consistent with the design position, and then place a pad at the bottom of the trolley arch, fix the trolley and the construction formwork, and then carry out concrete pouring to complete the one-stage pouring of the vault. After the concrete curing period, remove the bottom plate of the trolley, put the trolley on the shifter, and pull it to the next stage for construction; the present invention converts the conventional steel pipe support formwork system into the trolley formwork system (trolley and construction template) for concrete For pouring construction, there is no contact with the main cable during the construction process, which avoids the 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 saves the construction cost to the greatest extent. The trolley is pulled through the traction wire rope to move in the moving track. , 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 control is practical. The construction economic benefits of the invention are good; the invention has a good application effect under the condition that the anchoring system is constructed first, and the second lining of the anchor chamber is constructed later, and it is worthy of further popularization and application in similar projects.

Description of drawings

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

Figure 1 is the front view of the construction of the vault section of the construction equipment used for the second lining of the vault in the anchor room of the suspension bridge tunnel

Figure 2 is a side view of the construction of the vault section of the construction equipment used for the second lining of the vault of the anchor chamber of the suspension bridge tunnel;

Figure 3 is a front view of the arch structure;

Figure 4 is a top view of the trolley structure;

Figure 5 is a side view of the gantry structure;

FIG. 6 is a front view of the stand structure.

Description of reference numerals: 1. Trolley; 2. Platform; 3. Moving track; 4. Shifter; 5. Tractor; 6. Traction wire rope; 7. Hanging frame; 8. Jack; 9. Hanging seat; 10. Embedded parts; 11. Construction formwork; 12. Steering wheel; 1-1, arch frame; 1-2, transverse joint; 1-3, transverse brace; 1-4, left diagonal brace; 1-5, right Diagonal bracing; 1-6, the first connecting plate; 1-7, the second connecting plate; 2-1, the gantry arch; 2-2, the gantry horizontal connection; 2-3, the first horizontal connection; 2- 4. The second horizontal joint; 2-5, the first diagonal bracing; 2-6, the second diagonal bracing; 2-7, the third diagonal bracing; 2-8, the guardrail.

Detailed ways

Example 1:

As shown in Figures 1 and 2, a construction equipment for the second lining of the dome of the anchor chamber of a suspension bridge tunnel includes a trolley 1, a platform 2, a moving track 3, a traction unit, and a construction template 11. The construction template 11 is connected to the Outside 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 moving track 3 .

Pull the platform 2 to the pre-construction vault position by the traction unit, install the waterproof plate and steel bar, and pull the trolley 1 to this position after completion. The installation position of the construction formwork, adjust the construction formwork 11, confirm that it is consistent with the design position, and then use a backing plate at the bottom of the trolley 1 to fix the trolley 1 and the construction formwork 11, and then pour concrete to complete a vault. Stage pouring, remove the bottom plate of the trolley after the concrete curing period, put the trolley 1 on the moving track, and pull it to the next stage for construction; the construction formwork is a steel formwork; 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, which avoids damage to the main cable during the construction process. The unit traction trolley 1 moves in the moving track, and the traction is convenient. After the concrete pouring of the current section is completed, the steel bar and waterproof board installation of the next construction section can be started immediately. The construction is safe and efficient, and the operation is practical. The problem of insufficient reliability creates good construction economic benefits for the project; the invention has a good application effect under the condition that the anchoring system is constructed first, and the second lining of the anchor chamber is constructed later, and it is worthy of further popularization and application in similar projects.

Example 2:

On the basis of Embodiment 1, the traction unit includes a traction machine 5, a traction wire rope 6, a steering wheel 12, and the gantry 2, the steering wheel 12 and the traction machine 5 are sequentially connected by the traction wire rope 6; the traction machine 5 is a traction winch or chain hoist. The tractor 5 is arranged on the portal frame of the tunnel anchor hole or the tunnel anchor hole. The number of tractors 5 can be adjusted according to the actual situation. Compared with the chain hoist, the pulling speed of the traction hoist is faster, and the construction is stable; the chain hoist is relatively simple equipment, which can be selected according to the actual situation and has strong adaptability.

The trolley 1 further includes a shifter 4 , and the trolley 1 is connected to the moving track 3 through the shifter 4 . The shifter 4 facilitates the sliding of the trolley 1 on the moving track, reduces friction, saves time and effort, and improves work efficiency.

As shown in FIG. 5 , guardrails 2 - 8 are provided on the airside side of the platform 2 . The platform 2 is integrally welded with profiled steel, and guardrails 2-8 are provided on the air side for protection, the structure is simple and stable, the cost is reduced, and the safety is high. As shown in Figures 5 and 6, the gantry includes a multi-frame gantry arch 2-1 and a gantry cross-connection 2-2. The multi-frame gantry arch 2-1 passes through the gantry cross-connection 2- 2 connections, each gantry arch 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 horizontal link 2-3 is horizontally connected to the upper part of the gantry arch 2-1, the left and right sides of the middle part of the bench arch 2-1 are horizontally symmetrically connected to the second horizontal link 2-4, the first Between the left end of the horizontal link 2-3 and the right end of the second horizontal link 2-4 on the left side of the middle part of the gantry arch 2-1, the right end of the first horizontal link 2-3 and the middle part of the bench arch 2-1 The left end of the second horizontal link 2-4 on the right side is connected by a bracket, and the left end of the bench arch 2-1 and the right end of the second horizontal link 2-4 on the left side of the middle part of the bench arch 2-1 are connected , The right end of the gantry arch 2-1 and the left end of the second horizontal link 2-4 on the right side of the middle part of the gantry arch 2-1 are connected by the first diagonal brace 2-5, and the first horizontal link 2- Between the left part of 3 and the right end of the second horizontal link 2-4 on the left side of the middle part of the gantry arch 2-1, the right part of the first horizontal link 2-3 and the right part of the middle part of the bench arch 2-1 The left ends of the second horizontal links 2-4 are connected by the second diagonal brace 2-6, and the top of the gantry arch 2-1 is connected to the left side of the first horizontal link 2-3 through the third diagonal brace 2-7 respectively. part and right part. The first horizontal link 2-3, the second horizontal link 2-4, the first diagonal brace 2-5, the second diagonal brace 2-6 and the third diagonal brace 2-7 reinforce the gantry arch 2-1 with a simple structure Stablize.

Example 3:

On the basis of Embodiment 2, it also includes hangers 7. The number of hangers 7 is 2 groups, and the two groups of hangers 7 are horizontally symmetrically distributed on the left and right walls of the front anchor room. The upper edge of the hangers 7 The axial direction of the front anchor chamber is connected to the moving track 3 . The number of pylons is determined according to the calculation results of the construction force of the trolley. There are 6 pylons in two groups under the trolley in this project, 3 pylons on each side, symmetrically distributed on the left and right; the moving track 3 is a sliding track, and the sliding track adopts The channel steel is made and arranged on the hanger 7 of the left side wall and the right side wall of the front anchor room. Make sure that the sliding rail and the hanger are all in close contact with each other to facilitate the movement of the trolley.

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 . The jack 8 is simple in structure, light in weight, easy to carry, and easy to move.

The hanger 7 further includes a hanger 9 and an embedded part 10 , the hanger 7 is connected to the embedded part 10 through the hanger 9 , and the embedded part 10 is embedded in the side wall of the front anchor room. The pre-embedded parts 10 are pre-embedded during the construction of the side wall of the front anchor room, and the connection adopts climbing cones and pre-embedded steel bars, which is convenient for installation and removal.

Example 4:

As shown in FIG. 3 and FIG. 4 , on the basis of Embodiment 3, the trolley 1 includes a multi-arch frame 1-1 and a cross-link 1-2, and the multi-bar arch frame 1-1 is equally spaced from front to back. Distribution, multiple arches 1-1 are connected by horizontal links 1-2; each arch 1-1 includes horizontal braces 1-3, left diagonal braces 1-4, right diagonal braces 1-5, and the first connection The plate 1-6 and the second connecting plate 1-7, the left end of the left diagonal brace 1-4 is connected to the arch 1-1 through the second connecting plate 1-7, the right end of the left diagonal brace 1-4 and the cross brace 1-3 The left end is connected by the 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 by the first connecting plate 1-6, and the right end of the right diagonal brace 1-5 is connected by the second connection The plates 1-7 are connected, the transverse 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 lower inner side of the arch frame 1-1. The cross brace 1-3, the left diagonal brace 1-4, and the right diagonal brace 1-5 are arranged to strengthen the arch 1-1, and the structure is simple and stable.

The first connecting plate 1-6 and the second connecting plate 1-7 are welded and connected to the arch 1-1, the horizontal brace 1-3 is connected to the first connecting plate 1-6, and the left diagonal brace 1-4 is connected to the first connecting plate 1-6. The connecting plate 1-6 and the second connecting plate 1-7, and the right diagonal brace 1-5 are connected with the first connecting plate 1-6 and the second connecting plate 1-7 by bolts. The first connecting plate 1-6 and the second connecting plate 1-7 are both welded and connected to the arch 1-1, and the welded connection ensures that the cross brace 1-3 is firmly connected to the left diagonal brace 1-4 or the right diagonal brace 1-5. On the arch 1-1, the overall stability of the structure is improved; 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 , The right diagonal brace 1-5 is connected with the first connecting plate 1-6 and the second connecting plate 1-7 by bolts, which is convenient for installation and disassembly, and the operation is simple and convenient.

Example 5:

A construction method for the second lining of the dome of the anchor chamber of the tunnel of a suspension bridge. The tractor 5 pulls the platform 2 to the pre-construction dome position to install the waterproof plate and the steel bar, and after the completion, the trolley 1 is pulled to the installation position. 1 After being in place, lift the trolley 1 and the construction formwork 11 to the installation position of the construction formwork as a whole, adjust the construction formwork 11, confirm that it is consistent with the design position, and fix the trolley 1 and the construction formwork 11, and then carry out concrete pouring, After completing the pouring of one section of the vault, lower the trolley 1 to the moving track 3 after the poured concrete curing period, and the tractor 5 pulls the trolley 1 to the next stage for construction;

The present invention provides the construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel. The platform 2 is pulled to the pre-construction dome position by the tractor 5, the waterproof plate and the steel bar are installed, and after completion, the trolley 1 is pulled to the At this position, after the trolley 1 is in place, use the jack 8 to lift the trolley 1 and the construction formwork 11 as a whole to the installation position of the construction formwork. After the construction formwork 11 is adjusted correctly, a steel plate is placed at the bottom of the arch frame 1-1 of the trolley 1. Cushion, fix the trolley 1 and the construction formwork 11, and then pour the concrete to complete the pouring of the vault. The construction is carried out in the next paragraph; the present invention converts the conventional steel pipe support formwork system into a trolley formwork system (a trolley and a construction formwork) for concrete pouring construction, and the construction process is not in 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 a large amount of steel pipe materials, which saves the construction cost to the greatest extent. The trolley is pulled through the traction wire rope to move in the moving track, which is convenient for traction. After the concrete pouring of the current section is completed, the next construction section can be started immediately. Reinforcement and waterproofing Slab installation, safe and efficient construction, strong control practicability, can solve the problem of insufficient safety and reliability of full-house support construction, and create good construction economic benefits for the project. The application effect is good, and it is worthy of further promotion and application in similar projects.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "right", etc. is based on the orientation or positional relationship shown in the drawings, rather than indicated or implied. The device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are for illustrative purposes only and should not be construed as a limitation on the present patent.

The above examples are only examples of the present invention, and do not constitute a limitation on the protection scope of the present invention, and all designs that are identical or similar to the present invention belong to the protection scope of the present invention.

Claims (10)

1. a kind of construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel, it is characterized in that: comprise trolley (1), platform (2), moving track (3), traction unit, construction template (11), The construction formwork (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 moving track (3) )superior. 2. The construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel according to claim 1, wherein 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 tractor (5) are sequentially connected by a traction wire rope (6); the tractor (5) is a traction hoist or a chain hoist. 3. The construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel according to claim 1, wherein the trolley (1) further comprises a shifter (4), and the trolley (1) passes through the shifter (4). The positioner (4) is connected to the moving track (3). 4. The construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel according to claim 1, characterized in that: it also comprises a hanger (7), and the quantity of the hanger (7) is 2 groups and 2 groups of hangers (7) The left and right are symmetrically distributed on the left and right walls of the front anchor chamber, and the top of the hanger (7) is connected to the moving track (3) along the axial direction of the front anchor chamber. 5. as claimed in claim 4 for suspension bridge tunnel anchor chamber vault two lining construction equipment, it is characterized in that: also comprise a jack (8), the bottom of the jack (8) is connected to the top of the hanger (7), the jack The upper surface of (8) contacts the lower surface of the connecting trolley (1). 6. The construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel according to claim 4, wherein the hanger (7) further comprises a hanger (9) and an embedded part (10), the hanger (7) The frame (7) is connected to the embedded part (10) through the hanging seat (9), and the embedded part (10) is embedded in the side wall of the front anchor room. 7 . The construction equipment for the second lining of the vault of the anchor chamber of a suspension bridge tunnel according to claim 1 , wherein a guardrail ( 2 - 8 ) is arranged on the air-side of the platform ( 2 ). 8 . 8. The construction equipment for the second lining of the vault of the anchor chamber of the suspension bridge tunnel according to claim 1, characterized in that: the trolley (1) comprises a multi-arch arch (1-1) and a transverse link (1- 2), the multiple arches (1-1) are distributed at equal intervals from front to back, and the multiple arches (1-1) are connected by horizontal links (1-2); each arch (1-1) Including cross brace (1-3), left brace (1-4), right brace (1-5), first connecting plate (1-6) and second connecting plate (1-7), left brace The left end of (1-4) is connected to the arch (1-1) through the second connecting plate (1-7), and the right end of the left diagonal brace (1-4) and the left end of the cross brace (1-3) are connected through the first connection The plates (1-6) are connected, 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) Connected by the second connecting plate (1-7), the transverse brace (1-3) is horizontally located on the upper inner side of the arch (1-1), the left diagonal brace (1-4) and the right diagonal brace (1-5) are left and right Symmetrically distributed on the lower inner side of the arch (1-1). 9. The construction equipment for the second lining of the dome of the anchor chamber of the suspension bridge tunnel according to claim 8, wherein the first connecting plate (1-6) and the second connecting plate (1-7) are both connected with The arch (1-1) is connected by welding, the cross brace (1-3) is connected with the first connecting plate (1-6), and the left diagonal brace (1-4) is connected with the first connecting plate (1-6) and the second connecting plate (1-6) The plate (1-7) and the right diagonal brace (1-5) are connected with the first connecting plate (1-6) and the second connecting plate (1-7) by bolts. 10. A construction method for the second lining of the dome of the anchor chamber of a suspension bridge tunnel, characterized in that: the concrete steps are: a tractor (5) pulls the platform (2) to a pre-construction dome position to install a waterproof plate and a steel bar, After completion, the trolley (1) is towed to the installation position. After the trolley (1) is in place, the trolley (1) and the construction formwork (11) are jacked up as a whole to the construction formwork installation position, and the construction formwork (11) is carried out. Adjust and confirm that it is consistent with the design position, fix the trolley (1) and the construction template (11), and then carry out concrete pouring, complete the pouring of one segment of the vault, and lower the trolley (1) to the moving track after the concrete curing period. (3) On, the tractor (5) pulls the trolley (1) to the next stage for construction.

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