Large-span prestressed bent cap construction framework suitable for channel-crossing operation

Abstract

The utility model discloses a large-span prestressed capping beam construction framework suitable for channel-crossing operation, which comprises an abutment foundation structure, a plurality of bearing platforms and a plurality of supporting structures, and is characterized in that the abutment foundation structure comprises two groups of bearing platforms respectively positioned on two side parts of a trunk channel in a one-to-one correspondence manner; the pier column bearing beam structure is positioned and laid at the upper parts of the two groups of bearing platforms; the bottom bracing truss structure is welded and fixed at the upper part of the pier stud bearing beam structure; the bottom distribution beam body structure is laid on the upper portion of the bottom bracing truss structure in a distributed mode; the disc buckle support structure is welded and fixed to the upper portion of the bottom distribution beam body structure; the secondary bearing beam body structures are laid on the upper portion of the disc buckle support structure in a distributed mode; and the top distribution beam body structure is laid on the upper portion of the secondary bearing beam body structure in a distributed mode, and the extending direction of the top distribution beam body structure is perpendicular to the extending direction of the secondary bearing beam body structure. The technical problems that in the prior art, when a large-span prestress cover beam crossing a trunk canal area is constructed, an overall construction support foundation is difficult to stably arrange, and the applicability of a trunk canal cannot be guaranteed are solved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and more specifically, to a construction structure for large-span prestressed cap beams suitable for cross-canal operations. Background Technology

[0002] Currently, the scale of bridge construction in plain areas is continuously expanding in modern transportation infrastructure development. Due to route planning requirements, an increasing number of highway bridges need to cross obstacles such as canals and roads. Among these, the diversity of construction schemes for bridges crossing different obstacles has significantly increased, and the selection of a construction scheme is directly related to key aspects such as bridge construction progress, safety, quality, and cost control.

[0003] In existing technologies, steel pipe supports or clamp-type construction structures are commonly used for the construction of prestressed cap beams due to terrain constraints. However, when facing the construction of large-span prestressed cap beams spanning area a of the main canal, these construction structures still reveal significant limitations. Specifically:

[0004] On the one hand, the existence of the main canal a makes it difficult to set up a stable support foundation, resulting in conventional steel pipe supports being unable to meet the stability and load-bearing capacity requirements for the construction of large-span prestressed cap beams; on the other hand, since the main canal a may undertake important functions such as irrigation and drainage, building a special prestressed cap beam construction support for large spans across the canal without affecting its normal use has become a new challenge. Utility Model Content

[0005] To address this, the present invention provides a construction framework for large-span prestressed cap beams suitable for cross-canal operations, thereby solving the technical problems in the prior art where the overall construction support foundation is difficult to set up stably and the applicability of the main canal cannot be guaranteed when constructing large-span prestressed cap beams that cross main canal areas.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A construction framework for large-span prestressed cap beams suitable for cross-canal operations includes:

[0008] The foundation structure of the piers includes two sets of piers, each corresponding to one of the two sides of the main canal;

[0009] The pier-beam structure is positioned and laid on the upper part of the two sets of pier caps;

[0010] The bottom support truss structure is welded and fixed to the upper part of the pier column bearing beam structure;

[0011] The bottom distribution beam structure is laid in a distributed manner on the upper part of the bottom support truss structure;

[0012] The disc-lock bracket structure is welded and fixed to the upper part of the bottom distribution beam structure;

[0013] The secondary load-bearing beam structure is distributed and laid on the upper part of the disc-lock bracket structure;

[0014] The top distribution beam structure is laid on the upper part of the secondary load-bearing beam structure, and the extension direction of the top distribution beam structure is perpendicular to the extension direction of the secondary load-bearing beam structure.

[0015] Based on the above technical solution, the present invention is further described as follows:

[0016] As a further embodiment of this utility model,

[0017] The pier foundation structure also includes two sets of pier columns, each corresponding to one of the two sets of pile caps.

[0018] The pier column bearing beam structure includes two sets of I-beam crossbeams;

[0019] The two sets of I-beams are respectively located on both sides of the main canal, and the two sets of I-beams are respectively laid on the two sets of the foundation.

[0020] Both sets of I-beams correspond to the opposing inner sides of the two sets of piers, and the two sets of I-beams extend along the vertical direction of the line connecting the two sets of pier caps.

[0021] As a further embodiment of this utility model,

[0022] The bottom support truss structure includes six sets of steel truss main bodies arranged horizontally at intervals, and the six sets of steel truss main bodies are connected and fixedly connected by diagonal bracing channel steel welded together.

[0023] Each group of steel truss main bodies includes an upper chord, a lower chord, and a central vertical member, a central diagonal brace, an edge vertical member, and an edge diagonal brace, which are respectively welded and fixed between the upper chord and the lower chord. The extension directions of the upper chord and the lower chord are perpendicular to the extension directions of the two groups of I-beams, and the two sides of the lower chord are respectively fixed to the upper part of the two groups of I-beams.

[0024] As a further embodiment of this utility model,

[0025] The two sets of I-beams are respectively connected to the two sets of pier columns one-to-one by the bearing beam steel strands;

[0026] The two sides of the main body of the steel truss are respectively connected to the two sets of pier columns by truss steel strands.

[0027] As a further embodiment of this utility model,

[0028] The disc buckle bracket structure is equipped with at least three sets of column clamping components for each of the two sets of piers.

[0029] The column clamping assembly is configured to be assembled with connected steel profiles and bolts;

[0030] The steel profile and bolts are assembled, positioned, and clamped onto the pier column.

[0031] As a further embodiment of this utility model,

[0032] Rubber pads are provided between the inner side of the column clamping assembly and the steel strand and the pier column.

[0033] As a further embodiment of this utility model,

[0034] Reinforcing ribs are provided at the connection points of the vertical rod and the diagonal brace with the chord rod.

[0035] As a further embodiment of this utility model,

[0036] The bottom distribution beam structure includes several sets of double-I-beam crossbeams evenly arranged at 1.2m intervals on the upper part of the bottom support truss structure. The extension direction of the several sets of double-I-beam crossbeams is parallel to the extension direction of the two sets of I-beam crossbeams.

[0037] As a further embodiment of this utility model,

[0038] The secondary load-bearing beam structure includes several sets of double-jointed I-beam crossbeams arranged at 1.2m intervals on the upper part of the adjustable support of the disc buckle bracket structure. The extension direction of the several sets of double-jointed I-beam crossbeams is perpendicular to the extension direction of the two sets of I-beam crossbeams.

[0039] The top distribution beam structure includes several groups of square timbers arranged at 0.1m intervals on the upper part of the secondary load-bearing beam structure, with the extension direction of the square timbers parallel to the extension direction of the two groups of I-beam crossbeams.

[0040] As a further embodiment of this utility model,

[0041] The top and bottom of the disc buckle bracket structure are equipped with adjustable supports to adjust the cross slope angle.

[0042] The adjustable support is configured as a top support and / or a flat support.

[0043] This utility model has the following beneficial effects:

[0044] 1. This architecture can form a stable force system through the reasonable layout and connection between various structures, such as the pier column bearing beam structure, the bottom support truss structure and the column-hugging connection of the pier column, etc. It can reliably bear various loads during the construction of large-span prestressed cap beams, and effectively ensure the safety of the overall construction operation.

[0045] 2. The structure can flexibly adjust the cross slope angle through the adjustable brackets set at the top and bottom of the disc-lock bracket structure to adapt to the construction of the top cap beam with different design requirements; at the same time, each component adopts a standardized design and specific arrangement spacing, which makes it easier to flexibly adjust and assemble according to the actual project conditions.

[0046] 3. The structure uses common materials such as I-beams, channel steel, square timber, and disc-lock scaffolding. These materials are widely available and easy to obtain, which significantly reduces the complexity of the construction process and additional costs. Attached Figure Description

[0047] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The structures, proportions, sizes, etc., drawn in this specification are only used to complement the content disclosed in the specification, so that those skilled in the art can understand and read them. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0048] Figure 1 This is a schematic diagram of the overall structure of a large-span prestressed cap beam construction framework suitable for cross-canal operations, provided as an embodiment of the present invention.

[0049] Figure 2 This is one of the side view schematic diagrams of the bottom support truss structure in the construction framework of a large-span prestressed cap beam suitable for cross-canal operations provided by an embodiment of this utility model.

[0050] Figure 3 This is the second side view of the bottom support truss structure in the construction framework of a large-span prestressed cap beam suitable for cross-canal operations provided in this embodiment of the utility model.

[0051] Figure 4 This is a schematic diagram of a partial assembly structure corresponding to the bottom distribution beam structure in the construction framework of a large-span prestressed cap beam suitable for cross-canal operations provided in this embodiment of the utility model.

[0052] Figure 5 This is one of the schematic diagrams illustrating the application state of the construction structure of a large-span prestressed cap beam suitable for cross-canal operations, provided by an embodiment of this utility model.

[0053] Figure 6 This is the second schematic diagram of the application state structure of the large-span prestressed cap beam construction structure suitable for cross-canal operations provided by this utility model embodiment.

[0054] The attached diagram lists the components represented by each number as follows:

[0055] Pier foundation structure 1: pier cap 11, pier column 12;

[0056] 2. Pier column bearing beam structure; 21. Bearing beam steel strand;

[0057] Bottom-supported truss structure 3: steel truss main body 31, upper chord 311, lower chord 312, middle vertical member 313, middle diagonal brace 314, side vertical member 315, side diagonal brace 316, diagonal brace channel steel 32, truss steel strand 33;

[0058] Bottom distribution beam structure 4;

[0059] Disc buckle bracket structure 5: Disc buckle bracket body 51, column clamping assembly 52;

[0060] Secondary load-bearing beam structure 6; Top distribution beam structure 7;

[0061] Main canal a. Detailed Implementation

[0062] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0063] The terms "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0064] like Figures 1 to 6 As shown, this utility model embodiment provides a construction framework for large-span prestressed cap beams suitable for cross-canal operations, including a pier foundation structure 1, a pier column bearing beam structure 2, a bottom support truss structure 3, a bottom distribution beam structure 4, a disc-lock support structure 5, a secondary load-bearing beam structure 6, and a top distribution beam structure 7. This framework ensures safer and faster completion of prestressed cap beam construction while maintaining normal canal use and the load-bearing capacity of the support structure, thereby improving overall construction efficiency and project economy. The specific configuration is as follows:

[0065] Please refer to Figure 1 The pier foundation structure 1 includes two sets of piers 11 located on both sides of the main canal a and their upper piers 12, respectively. The piers 11 serve as the bearing foundation of the overall structure, providing stable support for the overall structure, while the piers 12 effectively transfer the load.

[0066] The pier-support beam structure 2 includes two sets of I50a I-beams. The two sets of I50a I-beams are respectively located on both sides of the main canal a, and are respectively laid on the two sets of foundations 11. The two sets of I50a I-beams correspond to the opposite inner sides of the two sets of piers 12, and extend along the vertical direction of the line connecting the two sets of foundations 11, so as to form a bottom support foundation based on the foundations 11 through the pier-support beam structure 2.

[0067] As a preferred embodiment, the two sets of I50a I-beams are respectively connected to the two sets of pier columns 12 one-to-one via the bearing steel strands 21, so as to improve the stability of the foundation.

[0068] Please refer to Figures 1 to 3 The bottom support truss structure 3 includes six sets of horizontally spaced steel truss main bodies 31, which are connected and fixedly connected by [10 diagonal bracing channel steel 32]. Specifically, each set of steel truss main bodies 31 includes an upper chord 311 of I36a I-beam, a lower chord 312 of I25a I-beam, and a central vertical bar 313, a central diagonal bracing bar 314, and an edge member respectively welded and fixed between the upper chord 311 and the lower chord 312. Vertical rod 315 and side diagonal brace 316; wherein, the middle vertical rod 313 and the middle diagonal brace 314 are both I14 I-beams, and the side vertical rod 315 and the side diagonal brace 316 are both I18 I-beams; the extension direction of the upper chord 311 and the lower chord 312 is perpendicular to the extension direction of the two sets of I50a I-beam crossbeams, and the two sides of the lower chord 312 are respectively welded and fixed to the upper part of the two sets of I50a I-beam crossbeams.

[0069] As another preferred embodiment, reinforcing ribs are provided at the connection points of the vertical rod and the diagonal brace with the chord, so as to significantly improve the overall stability of the bottom support truss structure 3.

[0070] More preferably, the two sides of the main body of the steel truss 31 are respectively connected to the two sets of pier columns 12 by truss steel strands 33 to further improve the stability of the truss.

[0071] Please refer to Figure 1 and Figure 4 The bottom distribution beam structure 4 includes several sets of double-jointed I14 I-beams evenly arranged at 1.2m intervals on the upper part of the bottom support truss structure 3. The extension direction of the several sets of double-jointed I14 I-beams is parallel to the extension direction of the two sets of I50a I-beams.

[0072] Please continue to refer to this. Figure 1 The disc buckle bracket structure 5 is welded and fixedly laid on the upper part of the bottom distribution beam structure 4; specifically, the length and width spacing of the bracket uprights in the disc buckle bracket structure 5 is set to 0.9m×1.2m, and the step distance of the bracket crossbars in the disc buckle bracket structure 5 is set to 1.5m.

[0073] As another preferred embodiment, the top and bottom of the disc buckle bracket structure 5 are provided with adjustable supports to adjust the cross slope angle. The adjustable supports include, but are not limited to, top supports and flat supports, which are used to flexibly adapt to the construction of the top cover beam with different design requirements, thereby improving the functional flexibility and practicality of the overall structure.

[0074] More preferably, the disc buckle bracket structure 5 is equipped with three sets of column clamping components 52 for each of the two sets of pier columns 12. The column clamping components 52 are configured as connected steel sections and bolts, which are assembled, positioned, and clamped to the pier columns 12 to further improve the overall stability of the bracket.

[0075] Rubber pads are provided between the inner side of the column clamping assembly 52 and the steel strand and the pier 12, so as to effectively prevent damage to the pier 12 and improve the overall functional adaptability.

[0076] Please continue to refer to this. Figure 1 The secondary load-bearing beam structure 6 includes several sets of double-jointed I14 I-beam crossbeams arranged at 1.2m intervals on the upper part of the adjustable support of the disc buckle bracket structure 5. The extension direction of the several sets of double-jointed I14 I-beam crossbeams is perpendicular to the extension direction of the two sets of I50a I-beam crossbeams.

[0077] The top distribution beam structure 7 includes several groups of 10×10cm square timbers arranged at 0.1m intervals on the upper part of the secondary load-bearing beam structure 6. The extension direction of the several groups of square timbers is parallel to the extension direction of the two groups of I50a I-beams, so as to directly bear the load transmitted from the bottom formwork of the cap beam and distribute it evenly to the lower structure, providing a stable support platform for the construction of the cap beam and improving its functionality and practicality.

[0078] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A construction structure for large-span prestressed cap beams suitable for cross-canal operations, characterized in that, include: The foundation structure of the piers includes two sets of piers, each corresponding to one of the two sides of the main canal; The pier-beam structure is positioned and laid on the upper part of the two sets of pier caps; The bottom support truss structure is welded and fixed to the upper part of the pier column bearing beam structure; The bottom distribution beam structure is laid in a distributed manner on the upper part of the bottom support truss structure; The disc-lock bracket structure is welded and fixed to the upper part of the bottom distribution beam structure; The secondary load-bearing beam structure is distributed and laid on the upper part of the disc-lock bracket structure; The top distribution beam structure is laid on the upper part of the secondary load-bearing beam structure, and the extension direction of the top distribution beam structure is perpendicular to the extension direction of the secondary load-bearing beam structure.

2. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 1, characterized in that, The pier foundation structure also includes two sets of pier columns, each corresponding to one of the two sets of pile caps. The pier column bearing beam structure includes two sets of I-beam crossbeams; The two sets of I-beams are respectively located on both sides of the main canal, and the two sets of I-beams are respectively laid on the two sets of the foundation. Both sets of I-beams correspond to the opposing inner sides of the two sets of piers, and the two sets of I-beams extend along the vertical direction of the line connecting the two sets of pier caps.

3. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 2, characterized in that, The bottom support truss structure includes six sets of steel truss main bodies arranged horizontally at intervals, and the six sets of steel truss main bodies are connected and fixedly connected by diagonal bracing channel steel welded together. Each group of steel truss main bodies includes an upper chord, a lower chord, and a central vertical member, a central diagonal brace, an edge vertical member, and an edge diagonal brace, which are respectively welded and fixed between the upper chord and the lower chord. The extension directions of the upper chord and the lower chord are perpendicular to the extension directions of the two groups of I-beams, and the two sides of the lower chord are respectively fixed to the upper part of the two groups of I-beams.

4. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 3, characterized in that, The two sets of I-beams are respectively connected to the two sets of pier columns one-to-one by the bearing beam steel strands; The two sides of the main body of the steel truss are respectively connected to the two sets of pier columns by truss steel strands.

5. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 4, characterized in that, The disc buckle bracket structure is equipped with at least three sets of column clamping components for each of the two sets of piers. The column clamping assembly is configured to be assembled with connected steel profiles and bolts; The steel profile and bolts are assembled, positioned, and clamped onto the pier column.

6. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 5, characterized in that, Rubber pads are provided between the inner side of the column clamping assembly and the steel strand and the pier column.

7. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 3, characterized in that, Reinforcing ribs are provided at the connection points of the vertical rod and the diagonal brace with the chord rod.

8. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 3, characterized in that, The bottom distribution beam structure includes several sets of double-I-beam crossbeams evenly arranged at 1.2m intervals on the upper part of the bottom support truss structure. The extension direction of the several sets of double-I-beam crossbeams is parallel to the extension direction of the two sets of I-beam crossbeams.

9. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 2, characterized in that, The secondary load-bearing beam structure includes several sets of double-jointed I-beam crossbeams arranged at 1.2m intervals on the upper part of the adjustable support of the disc buckle bracket structure. The extension direction of the several sets of double-jointed I-beam crossbeams is perpendicular to the extension direction of the two sets of I-beam crossbeams. The top distribution beam structure includes several groups of square timbers arranged at 0.1m intervals on the upper part of the secondary load-bearing beam structure, with the extension direction of the square timbers parallel to the extension direction of the two groups of I-beam crossbeams.

10. The construction structure for large-span prestressed cap beams suitable for cross-canal operations according to claim 1, characterized in that, The top and bottom of the disc buckle bracket structure are equipped with adjustable supports to adjust the cross slope angle. The adjustable support is configured as a top support and / or a flat support.

Images