Reinforcing construction operation platform for cantilever flange plate outside large-span concrete box girder box

Abstract

The utility model relates to the technical field of bridge reinforcing construction, and provides a large-span concrete box girder outer cantilever flange plate reinforcing construction operation platform which comprises a working platform frame and moving devices arranged at the tops of anti-collision walls at the two ends of a box girder, and the ends of the moving devices are connected with the working platform frame through long vertical rods. The moving device comprises a supporting frame, a wheel set and a walking track, a channel steel support is arranged at the top of the anti-collision wall of the box girder, the supporting frame is arranged on the channel steel support, the walking track is arranged on the sides, close to each other, of the two anti-collision walls at the top of the box girder in the length direction parallel to the box girder, and the wheel set matched with the walking track is arranged at the bottom of the supporting frame. The device is convenient to construct, has higher applicability and universality, can improve the construction efficiency, ensures the safety of constructors and the normal operation of a bridge, does not interrupt reinforcing construction, reduces the construction difficulty, and has better popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge reinforcement construction, in particular to a large-span concrete box beam outer cantilever flange plate reinforcement construction work platform. Background Art

[0002] Concrete box girders that have been in operation for too long will begin to crack. Cracking in the beam will not only reduce the stiffness of the bridge, but if the cracking is severe, it will also cause corrosion of the steel bars, reduce the durability of the bridge, and reduce the bearing capacity of the bridge, posing a huge safety hazard.

[0003] The flange plate reinforcement construction platform is the key to providing a safe working environment and convenient construction conditions. For the reinforcement construction of the outer flange plate of the box, the commonly used reinforcement schemes are to increase the cross-section reinforcement, increase the connectors and supports, glue the steel plate reinforcement and glue the fiber reinforcement. The above reinforcement schemes require construction workers to perform high-altitude operations at the bottom of the flange plate, and a construction platform needs to be built. The construction of the construction platform must take into account the special shape and structure of the cantilever flange plate outside the box beam. The existing reinforcement construction platform will cause damage to the box beam structure or affect its normal use during the construction process, and the traffic on the bridge deck needs to be interrupted, resulting in the safety of the construction workers not being guaranteed. At the same time, the construction cost and construction efficiency are low.

[0004] Therefore, in view of the above problems, a large-span concrete box girder outer cantilever flange plate reinforcement construction work platform is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model develops a large-span concrete box girder box outer cantilever flange plate reinforcement construction work platform. The utility model is easy to construct, has strong applicability and versatility, can improve construction efficiency, ensure the safety of construction personnel and normal operation of the bridge, does not interrupt reinforcement construction, reduces construction difficulty and has good promotion value.

[0006] The technical solution to the technical problem solved by the utility model is as follows: the utility model provides a large-span concrete box girder box outer cantilever flange plate reinforcement construction work platform, including a working platform frame and a moving device arranged on the top of the anti-collision walls at both ends of the box girder, the ends of the moving device are connected to the working platform frame through long vertical poles, the moving device includes a support frame, a wheel set and a running track, a channel steel support is arranged on the top of the box girder anti-collision wall, a support frame is arranged on the channel steel support, a running track is arranged on the side where the two anti-collision walls on the top of the box girder are close to each other along the direction parallel to the length of the box girder, and a wheel set adapted to the running track is arranged at the bottom of the support frame.

[0007] As an optimization, the support frame includes two upper chords, a forward connector and two columns. The two upper chords are horizontally arranged on the channel steel support along the vertical box girder length direction. Columns are vertically arranged at the ends of the upper chords. The forward connector connects the intersection of the two sets of upper chords and the columns, and a wheel group is arranged at the end of the column away from the forward connector.

[0008] As an optimization, a long vertical pole is arranged at one end of the vertical upper chord away from the forward connecting piece, and a step ladder is arranged between the two long vertical poles.

[0009] As an optimization, a diagonal brace is provided at the angle between the long vertical pole and the upper chord.

[0010] As an optimization, the working platform frame includes lower stiffening ribs, cross braces and diagonal braces. The lower stiffening ribs and cross braces are alternately connected to form a rectangular frame. The cross braces are arranged along the length direction parallel to the box girder, and the two ends of the cross braces close to the long vertical poles are connected to two long vertical poles. The diagonal braces are obliquely arranged in the rectangular frame, and the two ends of the diagonal braces are respectively connected to a lower stiffening rib and a cross brace.

[0011] As an optimization, a grille mesh is provided on the rectangular frame.

[0012] As an optimization, neutral poles are vertically set at both ends of the horizontal support away from the long poles, and a protective net is set between the two neutral poles and the two long poles.

[0013] As an optimization, high-quality rolled threaded steel bars are anchored between the flange plate and the lower stiffener of the collision wall.

[0014] As an optimization, the running rail is anchored to the crash barrier by limiting bolts.

[0015] The effects provided in the utility model content are only the effects of the embodiments, not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects:

[0016] This construction work platform has a simple structure, is easy to construct, and has strong applicability and versatility; the materials are easily available and the production is convenient; it uses the inner wall of the anti-collision wall for rapid movement and is anchored on the flange plate with fine-rolled threaded steel bars to ensure stability; the running track and the work platform moving device ensure the movement of the entire construction work platform along the bridge, greatly improving the construction efficiency; the work platform frame cross braces, diagonal braces and lower stiffening ribs form an X-shaped truss structure for supporting the steel grille and improving the rigidity of the frame; the grille and protective net ensure that the construction equipment will not fall, ensuring the safety of the construction personnel; the device requires a small construction space, can ensure the normal operation of the existing bridge, and can continue the reinforcement construction, reducing the construction difficulty and having good promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is a left view of the utility model;

[0020] Figure 3 This is a structural diagram of the running track of the utility model;

[0021] Figure 4 It is a structural diagram of the platform framework of the utility model;

[0022] Figure 5 It is a top view of the utility model;

[0023] Figure 6 It is a three-dimensional structural diagram of the utility model.

[0024] In the figure, 1. upper chord; 2. long vertical pole; 3. forward connector; 4. channel steel support; 5. column; 6. wheel set; 7. running track; 9. anti-collision wall; 10. diagonal brace; 11. step ladder; 12. protective net; 13. platform frame; 14. neutral pole; 15. precision-rolled threaded steel bar; 16. lower stiffening rib; 17. horizontal brace; 18. diagonal brace; 19. limit bolt. DETAILED DESCRIPTION

[0025] In order to clearly illustrate the technical features of this solution, the utility model is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The utility model omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the utility model. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model and simplifying the description, 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, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] like Figures 1 to 6 As shown, a large-span concrete box girder cantilever flange plate reinforcement construction work platform includes a work platform frame 13 and a moving device arranged on the top of the anti-collision wall 8 at both ends of the box girder. The end of the moving device is connected to the work platform frame 13 through a long vertical pole 2. The moving device includes a support frame, a wheel set 6 and a running track 7. A channel steel support 4 is arranged on the top of the box girder anti-collision wall 8, and a support frame is arranged on the channel steel support 4. The side where the two anti-collision walls 8 on the top of the box girder are close to each other is provided with a running track 7 parallel to the length direction of the box girder, and a wheel set 6 adapted to the running track 7 is arranged at the bottom of the support frame. The moving device and the running track 7 ensure the rapid movement of the entire construction work platform along the bridge direction, greatly improving the construction efficiency. The construction work platform requires a small construction space, which can ensure the normal operation of the existing bridge, and the reinforcement construction can be carried out without interruption.

[0027] In this embodiment, the support frame includes two upper chords 1, a forward connector 3 and two columns 5. The two upper chords 1 are horizontally arranged on the channel steel support 4 along the vertical box beam length direction. The columns 5 are vertically arranged at the ends of the upper chords 1. The forward connector 3 connects the intersection of the two groups of upper chords 1 and the columns 5. A wheel group 6 is arranged at the end of the column 5 away from the forward connector 3.

[0028] A long vertical pole 2 is arranged at one end of the vertical upper chord rod 1 away from the forward connecting member 3 , and a step ladder 10 is arranged between the two long vertical poles 2 .

[0029] A diagonal brace 9 is provided at the angle between the long vertical pole 2 and the upper chord pole 1 .

[0030] In this embodiment, the working platform frame 13 includes lower stiffening ribs 16, cross braces 17 and diagonal braces 18. The lower stiffening ribs 16 and cross braces 17 are alternately connected to form a rectangular frame. The cross braces 17 are arranged along the length direction parallel to the box beam, and the two ends of the cross braces 17 close to the long vertical poles 2 are connected to two long vertical poles 2. The diagonal braces 18 are obliquely arranged in the rectangular frame, and the two ends of the diagonal braces 18 are respectively connected to a lower stiffening rib 16 and a cross brace 17. The lower stiffening ribs 16, the cross braces 17 and the diagonal braces 18 form an X-shaped truss structure, which improves the rigidity of the working platform support.

[0031] In this embodiment, a grid mesh 12 is provided on the rectangular frame.

[0032] A neutral pole 14 is vertically arranged at both ends of the horizontal brace 17 away from the long pole 2, and a protective net 11 is arranged between the two neutral poles 14 and the two long poles 2. The protective net 11 and the iron mesh fence 12 ensure that the construction equipment will not fall, thereby ensuring the safety of the construction personnel.

[0033] The finely rolled threaded steel bars 15 are anchored between the flange plate and the lower stiffening rib 16 of the anti-collision wall 8. Channel steel support 4

[0034] It is used to support the construction platform and ensure that the construction platform will not shake together with the precision-rolled threaded steel bar 15, thereby ensuring the stability of the construction platform.

[0035] The running track 7 is anchored to the anti-collision wall 8 by the limit bolt 19. The running track 7 is used to quickly move the construction platform, thereby improving the construction efficiency, and the safety is high and does not affect the normal operation of the bridge deck.

[0036] When in use, first, the working platform frame 13 is welded into a whole using I-beams in the factory and the grille net 12 is installed. The construction personnel install the running track 7 on the inner wall of the bridge deck anti-collision wall 8, and then use a crane to hang it on the channel steel support 4 on the top of the anti-collision wall. One end of two fine-rolled threaded steel bars 15 is anchored on the flange plate, and the other end is anchored on the lower stiffening rib 16 of the bottom working platform frame, so as to support the entire working platform frame 13. The working platform frame 13 is anchored on the flange plate by the fine-rolled threaded steel bars 15. After the anchoring is completed, the construction personnel use the step ladder 10 on the working platform to go up and down from the bridge deck to the working platform to install the facade protective net 11. The subsequent segment construction can use the running track 7 and the moving device to manually push the outer flange plate reinforcement working platform of the box, thereby improving the construction efficiency. The above measures can achieve the purpose of normal operation of the existing bridge, ensuring construction safety and improving construction efficiency.

[0037] Although the specific implementation methods of the utility model are described above in conjunction with the accompanying drawings, this does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A large-span concrete box girder outer cantilever flange plate reinforcement construction work platform, characterized by: The invention comprises a working platform frame (13) and a moving device arranged on the top of the anti-collision walls (8) at both ends of the box beam, the end of the moving device is connected to the working platform frame (13) through a long vertical rod (2), the moving device comprises a support frame, a wheel group (6) and a running track (7), a channel steel support (4) is arranged on the top of the box beam anti-collision wall (8), a support frame is arranged on the channel steel support (4), a running track (7) is arranged on the side of the two anti-collision walls (8) at the top of the box beam close to each other along the direction parallel to the length of the box beam, and a wheel group (6) adapted to the running track (7) is arranged at the bottom of the support frame.

2. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 1 is characterized by: The support frame comprises two upper chords (1), a forward connector (3) and two columns (5), the two upper chords (1) are horizontally arranged on a channel steel support (4) along a vertical box beam length direction, the columns (5) are vertically arranged at the ends of the upper chords (1), the forward connector (3) connects the intersection of the two groups of upper chords (1) and the columns (5), and a wheel group (6) is arranged at one end of the column (5) away from the forward connector (3).

3. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 2 is characterized by: A long vertical rod (2) is arranged at one end of the vertical upper chord rod (1) away from the forward connecting member (3), and a step ladder (10) is arranged between the two long vertical rods (2).

4. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 3 is characterized by: A diagonal brace (9) is provided at the angle between the long vertical rod (2) and the upper chord rod (1).

5. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 1 is characterized by: The working platform frame (13) comprises lower stiffening ribs (16), cross braces (17) and diagonal braces (18). The lower stiffening ribs (16) and cross braces (17) are alternately connected to form a rectangular frame. The cross braces (17) are arranged along a direction parallel to the length of the box beam, and the two ends of the cross braces (17) close to the long vertical poles (2) are connected to the two long vertical poles (2). The diagonal braces (18) are obliquely arranged in the rectangular frame, and the two ends of the diagonal braces (18) are respectively connected to a lower stiffening rib (16) and a cross brace (17).

6. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 5 is characterized by: A grille net (12) is arranged on the rectangular frame.

7. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 5 is characterized by: Neutral poles (14) are vertically arranged at both ends of the horizontal support (17) away from the long poles (2), and a protective net (11) is arranged between the two neutral poles (14) and the two long poles (2).

8. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 5 is characterized by: A precision-rolled threaded steel bar (15) is anchored between the flange plate and the lower stiffening rib (16) of the collision wall (8).

9. The large-span concrete box girder outer cantilever flange plate reinforcement construction work platform according to claim 1 is characterized by: The running rail (7) is anchored to the anti-collision wall (8) by means of a limit bolt (19).

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