Steering monitoring device for external prestressing reinforcement of large-span concrete box girder

Abstract

The utility model provides a steering monitoring device for external prestressing reinforcement of a large-span concrete box girder, and relates to the technical field of bridge reinforcement. The steering monitoring device comprises a box girder, a supporting part arranged in the box girder, a mounting table arranged on the supporting part, a steering gear connected with the mounting table, and a detection part arranged on the mounting table. A plurality of steering steel plates are arranged to be connected with the steering gear, the weight of the steering gear is dispersed, the steering gear is installed more firmly, meanwhile, the steering steel plates are reinforced through a plurality of longitudinal stiffening ribs, force borne by the steering steel plates is dispersed to a supporting part and a box girder, and a plurality of steering pipe holes are formed for steel cables to penetrate through. The concrete cushion layer facilitates construction of the steering device, ensures that arrangement of the steel supporting truss is not affected by variable cross sections, supports the stand columns, enlarges the installation area of the stand columns, and avoids deformation of a lower cushion steel plate for installation of the stand columns. The stress and inclination angle of the steering device are detected through the inclination sensor and the strain sensor, and structural safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge reinforcement, in particular to a steering monitoring device for external prestressed reinforcement of a large-span concrete box girder. Background Art

[0002] Long-span concrete box girders are a type of structure commonly used in bridge construction. They have good load-bearing capacity and bending resistance. This type of beam is usually composed of multiple prefabricated concrete boxes, which are connected horizontally and vertically to form an overall structure. Long-span concrete box girders can span wider waters or terrains. They are widely used in various types of bridge construction, especially cross-river and cross-sea bridges.

[0003] During the use of large-span concrete box girders, cracks and mid-span deflection may occur. In order to solve these problems, external prestressing reinforcement technology can be used. This technology applies prestress to the outside of the box girder to improve the overall stiffness of the structure and meet the requirements of the design load. When implementing external prestressing reinforcement, a steering device is required to ensure the correct application and distribution of prestress. The steering device usually includes a steering gear, an anchor block, and a channel for guiding the prestressed beam. At present, the external prestressing steering device cannot monitor its inclination and strength. If the prestress is too large or too small, it cannot be adjusted in time.

[0004] Therefore, in view of the above problems, a motor shield of an intelligent wall plastering machine is proposed to solve the above problems. Utility Model Content

[0005] Aiming at the deficiencies of the prior art, the utility model develops a steering monitoring device for external prestressed reinforcement of a large-span concrete box girder. The utility model has a stable structure and can detect the stress and inclination of the steering device during the construction process.

[0006] The utility model solves the technical problem through a technical solution: a steering monitoring device for a large-span concrete box girder reinforced with external prestressing, comprising a box girder, a support portion arranged inside the box girder, a mounting platform arranged on the support portion, the mounting platform connected to a steering gear, and a detection portion arranged on the mounting platform.

[0007] The steering gear is arranged by arranging a support part and a mounting platform, so that the installation of the steering gear is more stable. At the same time, a detection part is arranged on the mounting platform to detect and monitor the stress and inclination angle of the steering device to ensure the safety of the structure.

[0008] Preferably, the mounting platform includes an upper anchor bolt, an anchor plate, a steering steel plate, a longitudinal stiffening rib and a steering tube hole. The anchor plate is arranged at the bottom of the inner top plate of the box beam. The anchor plate is connected to the box beam through a plurality of upper anchor bolts. The anchor plate is provided with a plurality of steering steel plates. The steering steel plate is connected to the anchor plate through a plurality of longitudinal stiffening ribs. The steering steel plate is provided with a plurality of steering tube holes.

[0009] By setting up multiple steering steel plates connected to the steering gear, the weight of the steering gear is dispersed, making the installation of the steering gear more secure. At the same time, the steering steel plate is reinforced by multiple longitudinal ribs so that the force on the steering steel plate is dispersed to the supporting part and the box beam. Multiple steering pipe holes are set for passing the steel cable.

[0010] Preferably, the support part includes an upper steel pad, an upper plate diagonal brace and columns. The upper steel pad is connected to the steering steel plate and the longitudinal stiffener. Multiple columns are connected below the upper steel pad, and an upper plate diagonal brace is arranged between the columns and the upper steel pad.

[0011] The mounting platform and the steering gear are supported by multiple columns, and the structural strength of the column connection is strengthened by upper plate diagonal braces and longitudinal stiffeners.

[0012] Preferably, the support part also includes a longitudinal connecting plate, a transverse connecting plate and an inclined plate. A plurality of longitudinal connecting plates are arranged between adjacent columns, transverse connecting plates are arranged at both upper and lower ends of the longitudinal connecting plates, a plurality of inclined plates are arranged between adjacent columns, and the inclined plates connect adjacent transverse connecting plates.

[0013] Adjacent columns are connected through multiple longitudinal connecting plates and transverse connecting plates to maintain stable force and avoid excessive force on a single column. At the same time, inclined plates are set to improve the stability of the columns and make the construction process safer.

[0014] Preferably, a lower steel pad is provided at the lower end of the column, a plurality of lower plate diagonal braces are provided between the lower steel pads of the column, the lower steel pad is provided above the concrete cushion layer, the lower steel pad is connected to the concrete cushion layer through lower anchor bolts, and the concrete cushion layer is provided on the bottom plate of the box beam.

[0015] The concrete cushion layer is beneficial to the construction of the steering device, ensuring that the setting of the steel support truss is not affected by the variable cross-section. At the same time, it supports the columns, expands the installation area of ​​the columns, and avoids deformation of the underlying steel plates for column installation.

[0016] Preferably, the detection unit includes a tilt sensor and a strain sensor, and the tilt sensor and the strain sensor are both arranged on the mounting platform.

[0017] The tilt sensor is AR-SS-QJ301 and the strain sensor is CG-85A. The tilt sensor and strain sensor are used to detect the stress and inclination of the steering device to ensure structural safety.

[0018] 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:

[0019] By arranging multiple steering steel plates connected to the steering gear, the weight of the steering gear is dispersed, so that the installation of the steering gear is more secure. At the same time, the steering steel plate is reinforced by multiple longitudinal stiffeners, so that the force on the steering steel plate is dispersed to the support part and the box beam, and multiple steering pipe holes are arranged for passing the steel cable;

[0020] The concrete cushion layer is conducive to the construction of the steering device, ensuring that the setting of the steel support truss is not affected by the variable cross-section. At the same time, it supports the columns, expands the installation area of ​​the columns, and avoids deformation of the steel plate under the column installation;

[0021] The steering device stress and inclination angle are detected by tilt sensors and strain sensors to ensure structural safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a front view of the utility model.

[0024] Figure 2 It is the right view of the utility model.

[0025] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure in the middle.

[0026] Figure 4 For the utility model Figure 1 Enlarged schematic diagram of the structure at point B in the middle.

[0027] Figure 5 For the utility model Figure 1 Enlarged schematic diagram of the structure at point C in the middle.

[0028] Figure 6 For the utility model Figure 2 Enlarged schematic diagram of the structure at point D in the middle.

[0029] In the figure, 1. box girder; 2. mounting platform; 3. upper anchor bolt; 4. anchor bolt plate; 5. steering steel plate; 6. longitudinal stiffener; 7. steering tube hole; 8. upper steel pad; 9. upper plate diagonal brace; 10. column; 11. longitudinal connecting plate; 12. transverse connecting plate; 13. inclined plate; 14. lower steel pad; 15. concrete cushion layer; 16. lower anchor bolt; 17. tilt sensor; 18. strain sensor; 19. lower plate diagonal brace. DETAILED DESCRIPTION

[0030] 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.

[0031] like Figures 1 to 6 As shown, a steering monitoring device for external prestressed reinforcement of a large-span concrete box girder comprises a box girder 1, a support portion is arranged inside the box girder 1, a mounting platform 2 is arranged on the support portion, the mounting platform 2 is connected to a steering gear, and a detection portion is arranged on the mounting platform 2. The steering gear is arranged by arranging the support portion and the mounting platform 2, so that the installation of the steering gear is more stable, and at the same time, the mounting platform 2 is provided with a detection portion for detecting and monitoring the stress and inclination of the steering device to ensure the safety of the structure.

[0032] The mounting platform 2 includes an upper anchor bolt 3, an anchor bolt plate 4, a steering steel plate 5, a longitudinal stiffening rib 6 and a steering tube hole 7. The anchor bolt plate 4 is arranged at the bottom of the top plate inside the box beam 1. The anchor bolt plate 4 is connected to the box beam 1 through a plurality of upper anchor bolts 3. The anchor bolt plate 4 is provided with a plurality of steering steel plates 5. The steering steel plate 5 is connected to the anchor bolt plate 4 through a plurality of longitudinal stiffening ribs 6. The steering steel plate 5 is provided with a plurality of steering tube holes 7. By arranging a plurality of steering steel plates 5 to be connected to the steering gear, the weight of the steering gear is dispersed, and the installation of the steering gear is made more secure. At the same time, the steering steel plate 5 is reinforced by a plurality of longitudinal stiffening ribs 6, so that the force on the steering steel plate 5 is dispersed to the supporting part and the box beam 1. A plurality of steering tube holes 7 are arranged for passing the steel cable.

[0033] The support part includes an upper steel pad 8, an upper plate diagonal brace 9 and a column 10. The upper steel pad 8 is connected to the steering steel plate 5 and the longitudinal stiffener 6. A plurality of columns 10 are connected below the upper steel pad 8. An upper plate diagonal brace 9 is arranged between the column 10 and the upper steel pad 8. The mounting platform 2 and the steering gear are supported by a plurality of columns 10, and the structural strength of the connection between the columns 10 is strengthened by the upper plate diagonal brace 9 and the longitudinal stiffener 6.

[0034] The support part also includes a longitudinal connecting plate 11, a transverse connecting plate 12 and an inclined plate 13. A plurality of longitudinal connecting plates 11 are arranged between adjacent columns 10. Transverse connecting plates 12 are arranged at both upper and lower ends of the longitudinal connecting plates 11. A plurality of inclined plates 13 are arranged between adjacent columns 10, and the inclined plates 13 connect adjacent transverse connecting plates 12. The adjacent columns 10 are connected by a plurality of longitudinal connecting plates 11 and transverse connecting plates 12 to maintain a stable force and prevent a single column 10 from being subjected to excessive force. At the same time, the inclined plates 13 are arranged to improve the stability of the columns 10 and make the construction process safer.

[0035] A lower steel pad 14 is provided at the lower end of the column 10, and a plurality of lower plate diagonal braces 19 are provided between the lower steel pads 14 of the column 10. The lower steel pad 14 is provided above the concrete cushion 15, and the lower steel pad 14 is connected to the concrete cushion 15 through the lower anchor bolt 16, and the concrete cushion 15 is provided on the bottom plate of the box beam 1. The concrete cushion 15 is conducive to the construction of the steering device, ensuring that the setting of the steel support truss is not affected by the variable cross-section, and at the same time supports the column 10, expands the installation area of ​​the column 10, and avoids deformation of the lower pad steel plate installed on the column 10.

[0036] The detection unit includes a tilt sensor 17 and a strain sensor 18, both of which are arranged on the mounting platform 2. The tilt sensor 17 uses the AR-SS-QJ301 model, and the strain sensor 18 uses the CG-85A model. The tilt sensor 17 and the strain sensor 18 detect the stress and inclination of the steering device to ensure the safety of the structure.

[0037] Working principle: Construction workers weld the steering steel plate 5 and the longitudinal stiffening ribs to the anchor plate 4, fix them to the bottom of the top plate in the box with the upper anchor 3, and weld the upper steel pad 8 to the longitudinal stiffening ribs of the steering steel plate 5. Four columns 10 and the upper plate diagonal brace 9 are welded on the upper steel pad 8 to improve the stability of the column 10, and then the transverse connecting plate 12 and the longitudinal connecting plate 11 are welded to the column 10 in the transverse and longitudinal directions, and the diagonal plate 13 is welded in the diagonal direction to ensure the overall stability of the steel truss support. The lower steel pad 14 and the lower plate diagonal brace 19 are welded at the bottom of the column 10, and the lower steel pad 14 is anchored to the concrete cushion 15 with the lower anchor 16. After anchoring, strain sensors 18 and tilt sensors 17 are set on the steering steel plate 5 to establish an intelligent monitoring system.

[0038] 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 steering monitoring device for external prestressed reinforcement of a large-span concrete box girder, comprising a box girder (1), characterized in that: A support portion is arranged inside the box beam (1), a mounting platform (2) is arranged on the support portion, the mounting platform (2) is connected to a steering gear, and a detection portion is arranged on the mounting platform (2); The detection unit comprises a tilt sensor (17) and a strain sensor (18), and the tilt sensor (17) and the strain sensor (18) are both arranged on a mounting platform (2).

2. The steering monitoring device for external prestressed reinforcement of a large-span concrete box girder according to claim 1 is characterized in that: The mounting platform (2) comprises an upper anchor bolt (3), an anchor bolt plate (4), a steering steel plate (5), a longitudinal stiffening rib (6) and a steering tube hole (7); the anchor bolt plate (4) is arranged at the bottom of the inner top plate of the box beam (1); the anchor bolt plate (4) is connected to the box beam (1) via a plurality of upper anchor bolts (3); the anchor bolt plate (4) is provided with a plurality of steering steel plates (5); the steering steel plates (5) are connected to the anchor bolt plate (4) via a plurality of longitudinal stiffening ribs (6); and the steering steel plates (5) are provided with a plurality of steering tube holes (7).

3. The steering monitoring device for external prestressed reinforcement of a large-span concrete box girder according to claim 1 is characterized in that: The support portion comprises an upper steel pad (8), an upper plate diagonal brace (9) and a column (10); the upper steel pad (8) is connected to the steering steel plate (5) and the longitudinal stiffening rib (6); a plurality of columns (10) are connected below the upper steel pad (8); and an upper plate diagonal brace (9) is provided between the column (10) and the upper steel pad (8).

4. The steering monitoring device for external prestressed reinforcement of a large-span concrete box girder according to claim 3 is characterized in that: The support portion further comprises a longitudinal connecting plate (11), a transverse connecting plate (12) and an inclined plate (13); a plurality of longitudinal connecting plates (11) are arranged between adjacent columns (10); transverse connecting plates (12) are arranged at upper and lower ends of the longitudinal connecting plates (11); a plurality of inclined plates (13) are arranged between adjacent columns (10); and the inclined plates (13) are connected to adjacent transverse connecting plates (12).

5. The steering monitoring device for external prestressed reinforcement of a large-span concrete box girder according to claim 4 is characterized in that: A lower steel pad (14) is provided at the lower end of the column (10), a plurality of lower plate diagonal braces (19) are provided between the lower steel pads (14) of the column (10), the lower steel pad (14) is provided above a concrete cushion layer (15), the lower steel pad (14) is connected to the concrete cushion layer (15) via lower anchor bolts (16), and the concrete cushion layer (15) is provided on the bottom plate of the box beam (1).

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