CN218893985U - A full framing for demolishing hyperbolic arch bridge - Google Patents

Abstract

The utility model discloses a full framing for dismantling a double arch bridge, which relates to the technical field of bridge dismantling, and comprises a plurality of bracket components which are arranged below the double arch bridge at intervals along the longitudinal bridge direction, wherein the bracket components are used for supporting arch ribs of the double arch bridge, and each bracket component comprises: a holder main body; the pressure receiving plate is connected to the bottom of the bracket main body; and one end of each anti-slip pipe is connected to the bottom side of the pressure receiving plate, and the other end of each anti-slip pipe is used for being inserted into a river bed. The bottom of this scheme support main part is connected with the pressure receiving plate, enlarges the riverbed pressurized area, reduces local compressive stress, prevents the support unstability. And the bottom side of the pressed plate is connected with an anti-slip pipe, and the anti-slip pipe is pressed into the river bed to prevent the bracket from shifting in river bottom sludge after being stressed. Solves the problems of easy instability, shift in river dike silt and high safety risk when a full framing is erected in a river bed in the prior art.

Description

A full support for dismantling double-curved arch bridges

technical field

The utility model relates to the technical field of bridge dismantling, in particular to a full hall bracket used for dismantling a hyperbolic arch bridge.

Background technique

The double-curved arch bridge is a form of arch bridge whose shape presents curves in the vertical and horizontal directions. With the rapid development of my country's transportation industry, the traffic volume and vehicle load levels have increased rapidly. The double-curved arch bridges built in the early days can no longer meet the needs of modern traffic. After a long period of overloading, their safety reserves have dropped sharply, and they have been severely damaged and become dangerous bridges. , In urbanization construction and traffic reconstruction, it needs to be dismantled and rebuilt in time. The demolition of old bridges is difficult, risky, and requires high construction safety, especially for the demolition of multi-span double-curved arch bridges. The demolition process is greatly affected by the existing structural form. It is necessary to maintain the balance of the beam body force at all times to avoid causing the butterfly effect to cause beam body damage. The whole collapsed. Generally, demolition is carried out in accordance with the reverse order of bridge construction, that is, the principle of "symmetrical reverse construction order".

In the prior art, for some double-curved arch bridges with a long history, lack of design and construction technical files, and existing structures with unclear structures, blasting demolition method or full support method is generally used. The full hall support in the prior art has the problem that when the full hall support is erected in the river bed, it is easy to lose stability, shift in the river embankment silt, and have a high safety risk.

Utility model content

Aiming at the defects existing in the prior art, the purpose of this utility model is to provide a full hall support for dismantling double-curved arch bridges, which can solve the problem that the full hall support in the prior art is easy to lose stability when it is erected in the river bed, and the silt on the river embankment Medium shift, high security risk.

For achieving above object, the technical scheme that the utility model takes is:

This scheme provides a kind of full hall support for dismantling the double-curved arch bridge, including

A plurality of bracket assemblies are arranged below the double-curved arch bridge and arranged at intervals along the longitudinal direction of the bridge. The bracket assemblies are used to support the arch ribs of the double-curved arch bridge. Each of the bracket assemblies includes:

- bracket body;

- a pressure plate connected to the bottom of the bracket body;

- a plurality of anti-slip pipes arranged at intervals, one end of each anti-slip pipe is connected to the bottom side of the pressure plate, and the other end is used for inserting into the river bed.

In some optional solutions, the bracket assembly also includes,

a top plate, the top plate is connected to the top of the bracket main body;

I-shaped steel, the horizontal bridge of the I-shaped steel is arranged above the top plate.

In some optional solutions, the bracket assembly further includes a top support, one end of the top support is connected to the I-shaped steel, and the other end is used to support the arch rib.

In some optional solutions, at least one layer of construction platform is also included, and the construction platform includes:

a connection component, the connection component sequentially connects a plurality of the bracket components;

a springboard, the springboard is arranged above the connection assembly.

In some optional solutions, a plurality of safety cable towers are also included, the safety cable towers are arranged on the construction platform, and safety ropes are connected between adjacent safety cable towers.

In some optional solutions, the stent body includes:

Four columns arranged vertically and located at the four corners of the rectangle;

Multiple sets of connecting column groups connecting four columns at different heights, each group of connecting column groups includes four connecting columns, and the connecting columns are vertically connected between two columns located on one side of the rectangle;

A plurality of diagonal braces, the two ends of the diagonal braces are respectively connected to two of the upright columns and two adjacent connecting columns between them to form diagonal corners of a rectangle.

In some optional solutions, the heights of the plurality of bracket assemblies are set according to the height of arch ribs at the locations.

In some optional schemes, the pressure receiving plate is a 12mm thick steel plate, and the anti-skid pipe is a Φ50×3.5mm steel pipe.

In some optional solutions, the top plate is a 12mm thick steel plate.

In some optional solutions, the column is a Φ60×5mm steel pipe, and the connecting column and the diagonal brace are both Φ50×3.5mm steel pipe.

Compared with the prior art, the utility model has the advantages that: when the full hall support is erected in the riverbed, the bottom of the main body of the support is connected with a pressure plate, which expands the pressure area of the riverbed, reduces local compressive stress, and prevents the support from being unstable. . And the bottom side of the pressure plate is connected with an anti-slip pipe, and the anti-slip pipe is pressed into the river bed earlier to prevent the support from shifting in the river bottom silt after being stressed. It solves the problems in the prior art that when the mantang support is erected in the river bed, it is easy to lose stability, shift in the silt of the river embankment, and have high safety risks.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is the structural representation of support assembly in the utility model embodiment;

Fig. 2 is the schematic diagram of supporting the arch rib under the double-curved arch bridge in the embodiment of the utility model in which the support assembly is located;

Fig. 3 is the overall schematic view of the full hall bracket used to remove the double-curved arch bridge in the embodiment of the utility model;

In the figure: 1. Bracket assembly; 11. Bracket main body; 111. Upright column; 112. Connecting column; 113. Diagonal brace; 12. Pressure plate; 2. Construction platform; 21. Connecting components; 22. Springboard; 3. Safety cable tower; 31. Safety rope; 4. River bed; 5. Arch rib.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

Embodiments of the utility model will be described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1 and Fig. 2, on the one hand, the utility model provides a full hall support for dismantling a hyperbolic arch bridge, including:

A plurality of bracket assemblies 1 are arranged at intervals along the longitudinal direction of the double-curved arch bridge. The bracket assemblies 1 are used to support the arch ribs 5 of the double-curved arch bridge. Each bracket assembly 1 includes:

- bracket body 11;

- a pressure plate 12, the pressure plate 12 is connected to the bottom of the bracket body 11;

- A plurality of anti-slip pipes 13 arranged at intervals, one end of each anti-slip pipe 13 is connected to the bottom side of the pressure plate 12 , and the other end is used for inserting into the river bed 4 .

In this embodiment, when the plan supports the full hall in the river bed, the bottom of the main body 11 of the support is connected with a pressure plate 12 to expand the pressure area of the river bed, reduce local compressive stress, and prevent the support from being unstable. And the bottom side of the pressure plate 12 is connected with an anti-skid pipe 13, and the anti-skid pipe 13 is pressed into the river bed earlier to prevent the support from shifting in the river bottom silt after being stressed. It solves the problems in the prior art that when the mantang support is erected in the river bed, it is easy to lose stability, shift in the silt of the river embankment, and have high safety risks.

In some optional embodiments, the bracket assembly 1 also includes,

Top plate 14, top plate 14 is connected on the top of bracket main body 11;

I-shaped steel 15, the I-shaped steel 15 is horizontally arranged above the top plate.

In this embodiment, the top plate 14 and the I-shaped steel 15 are sequentially arranged on the top of the bracket main body 11 to provide support points for the reverse preload bracket of the jack.

In some optional embodiments, the bracket assembly 1 further includes a top support 16 , one end of the top support 16 is connected to the I-shaped steel 15 , and the other end is used to support the arch rib 5 .

In this embodiment, the arch rib 5 is supported by setting the top support 16 as a reverse support measure when the double-curved arch bridge is demolished.

As shown in Figure 3, in some optional embodiments, at least one layer of construction platform 2 is also included, and construction platform 2 includes:

A connection assembly 21, the connection assembly 21 sequentially connects a plurality of bracket assemblies 1;

Springboard 22 . The springboard 22 is arranged above the connection assembly 21 .

In this embodiment, a plurality of support components 1 are sequentially connected through the connection component 21, which enhances the stability of the whole support. A springboard 22 is provided on the connection assembly 21 to provide a working platform for construction personnel, prevent construction waste from polluting river courses, and protect the environment.

In some optional embodiments, a plurality of safety cable towers 3 are also included, and the safety cable towers 3 are arranged on the construction platform 2 , and safety ropes 31 are connected between adjacent safety cable towers 3 .

In this embodiment, by setting the safety cable tower 3 and the safety rope 31, the safety of the construction personnel is guaranteed and the accident of falling is prevented.

In some optional embodiments, the bracket body 11 includes:

Four vertical columns 111 located at the four corners of the rectangle;

A plurality of connecting column groups connecting four columns 111 at different heights, each connecting column group includes four connecting columns 112, and the connecting columns 112 are vertically connected between two columns 111 located on one side of the rectangle;

A plurality of diagonal braces 113, the two ends of the diagonal braces 113 respectively connect two upright columns 111 and two adjacent connecting columns 112 between them to form diagonal corners of a rectangle.

In this embodiment, the structure of the bracket main body 11 is stable and firm, which ensures the stability and reliability of the bracket during construction.

In some optional embodiments, the heights of the multiple bracket assemblies 1 are set according to the heights of the arch ribs 5 at their locations.

In this embodiment, since the heights of the arch ribs 5 are different along the longitudinal bridge, the heights of the corresponding bracket components 1 are also different.

On the other hand, the utility model provides a method for dismantling a double-curved arch bridge. The method is implemented by using the above-mentioned full hall support for dismantling a double-curved arch bridge, and includes the following steps,

S1: Multiple sets of support assemblies 1 are arranged at intervals along the longitudinal bridge direction under the double-curved arch bridge, and the anti-slip tube 13 provided on the bottom side of the pressure plate 12 of the support assembly 1 is inserted into the river bed, and the pressure plate 12 is pressed on the river bed .

In this embodiment, this step specifically includes pre-assembling and manufacturing bracket assemblies 1 of different specifications with different lengths, and transferring the bracket assembly 1 to a predetermined position through a buoyant tank. The anti-skid pipe 13 is inserted in the river bed, and the pressure plate 12 is pressed on the river bed.

S2: Demolish the double-curved arch bridge in different areas.

In this embodiment, during the demolition construction, the demolition sequence is carried out in sequence according to the railing, concrete bridge deck, solid web section, web arch ring, web wall, arch slab, arch wave, hoisting of arch rib, abutment, and abutment, maximizing Reduce the impact on the structure of the unremoved part during the demolition process, reduce the risk of instability, and improve safety.

S3: Remove the full hall support in the reverse order of erection.

In this embodiment, the dismantling is performed in the reverse order of erecting the full hall support, which can effectively ensure the efficiency and safety of the dismantling process.

In some optional embodiments, before the double-curvature arch bridge is demolished in different areas:

A plurality of jacks are arranged between each of the I-shaped steel 15 and the arch rib 5, and the jacks are activated synchronously to reversely preload the full support;

The top support 16 is welded on the I-shaped steel 15 on the top of the bracket main body 11 .

In this embodiment, jacks are used to reversely pre-press the support of the whole hall, and the support is firmly pressed into the river bed, so as to improve the stability of the support and improve the safety guarantee. The bracket can adjust the support height at any time according to the needs, eliminate the gap from the arch, and ensure the even and balanced force of the bridge during the demolition process.

In some optional embodiments, when the double-curvature arch bridge is dismantled, the double-curvature arch bridge is cut and dismantled by a diamond wire saw and hoisted away.

In this embodiment, a diamond wire saw is used to statically cut the existing structure to minimize the impact on the structure of the double-curved arch bridge to be removed and reduce the risk of instability.

In the above scheme, what the column 111 uses is a Φ60×5mm steel pipe, what the connecting column 112, the diagonal brace 113, and the anti-skid pipe 13 all use is a Φ50×3.5mm steel pipe, and what the top support uses is a Φ150mm steel pipe. Both the pressure plate 12 and the top plate 14 used 12mm thick steel plates.

In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower" and so on is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed, or operate in a particular orientation, and thus should not be construed as limiting the application. Unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or an internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

It should be noted that in this application, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply There is no such actual relationship or order between these entities or operations. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only specific implementation manners of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. A full hall support for removing double-curvature arch bridge, is characterized in that, comprises: A plurality of bracket assemblies (1) are used to be arranged under the double-curved arch bridge and arranged at intervals along the longitudinal direction of the bridge. The bracket assemblies (1) are used to support the arch ribs (5) of the double-curved arch bridge, and each of the brackets Components (1) each include: - bracket body (11); - a pressure plate (12), the pressure plate (12) is connected to the bottom of the bracket body (11); - A plurality of anti-slip pipes (13) arranged at intervals, one end of each anti-slip pipe (13) is connected to the bottom side of the pressure receiving plate (12), and the other end is used for inserting into the river bed (4). 2. as claimed in claim 1, is used to remove the full hall support of double-curvature arch bridge, is characterized in that, described support assembly (1) also comprises, a top plate (14), the top plate (14) is connected to the top of the bracket main body (11); I-shaped steel (15), the I-shaped steel (15) is arranged above the top plate horizontally. 3. The full hall support for removing the double-curvature arch bridge as claimed in claim 2, characterized in that, the support assembly (1) also includes a top support (16), and one end of the top support (16) is connected to the On the I-shaped steel (15), the other end is used to support the arch rib (5). 4. as claimed in claim 1, it is characterized in that being used to remove the full hall support of double-curvature arch bridge, also comprising at least one deck construction platform (2), and described construction platform (2) comprises: a connection component (21), the connection component (21) sequentially connects a plurality of the bracket components (1); A springboard (22), the springboard (22) is arranged above the connection assembly (21). 5. as claimed in claim 4, is used to remove the full hall support of double-curvature arch bridge, is characterized in that, also comprises a plurality of safety cable towers (3), and described safety cable tower (3) is arranged on described construction platform (2) ), a safety rope (31) is connected between the adjacent safety cable towers (3). 6. as claimed in claim 1, is used to remove the full hall support of double-curvature arch bridge, is characterized in that, described support main body (11) comprises: Four vertically arranged columns (111) located at the four corners of the rectangle; A plurality of connecting column groups connecting four columns (111) at different heights, each group of connecting column groups includes four connecting columns (112), and the connecting columns (112) are vertically connected on one side of a rectangle Between the two columns (111); A plurality of diagonal braces (113), the two ends of the diagonal braces (113) respectively connect two of the upright columns (111) and the two adjacent connecting columns (112) between them to form diagonal corners of a rectangle. 7. The full hall support for dismantling a double-curvature arch bridge according to claim 1, characterized in that, the heights of the plurality of support assemblies (1) are set according to the height of the arch ribs (5) at their positions. 8. The full hall support for dismantling a double-curvature arch bridge according to claim 1, characterized in that, the pressure-receiving plate (12) is a 12mm thick steel plate, and the anti-skid pipe (13) is Φ50×3.5mm Type steel pipe parts. 9. The full hall support for removing a double-curvature arch bridge as claimed in claim 2, characterized in that, the top plate (14) is a 12mm thick steel plate product. 10. The full hall support for dismantling a double-curvature arch bridge according to claim 6, characterized in that, the column (111) is a Φ60×5mm type steel pipe product, and the connecting column (112) and the diagonal brace (113) All are made of Φ50×3.5mm steel pipe.

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