A multi-beam multi-span multi-pre-arch combined type prefabricated beam support

Abstract

The application relates to a multi-beam multi-span multi-pre-arch combined prefabricated beam support, which comprises a support, a plurality of hoisting holes are arranged on the support, the axis of the hoisting holes is perpendicular to the length direction of the support, a widening assembly is arranged on both sides of the support, each widening assembly at least comprises a first connecting piece which is fixedly connected to the upper part of the side surface of the support in the length direction of the support, a second connecting piece which is fixedly connected to the lower part of the side surface of the support in the length direction of the support, and a plurality of third connecting pieces which are arranged at intervals and are fixedly connected to the first connecting piece and the second connecting piece perpendicularly, and a bottom die is arranged above the widening assembly and is arranged at intervals with the support perpendicularly to the direction of the support. Since the plurality of hoisting holes are arranged on the support, the widening assembly is arranged on both sides of the support, and the bottom die is arranged at intervals with the support, the beam support of the application is convenient for producing the multi-beam, multi-span and multi-pre-arch combined prefabricated beam.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a precast beam platform suitable for multi-beam, multi-span, and multi-camber composite structures. Background Technology

[0002] In engineering fields such as bridge construction, precast beams are widely used due to their advantages such as high construction efficiency and controllable quality. The production of precast beams needs to be completed on precast beam platforms, and the performance and applicability of the precast beam platforms play a key role in the quality and production efficiency of the precast beams.

[0003] Traditional precast beam supports are typically designed for single beam types, fixed spans, and fixed camber, resulting in relatively fixed structural forms. However, the limitations of traditional supports become apparent when producing composite precast beams with multiple beam types, spans, and cambers. Firstly, due to differences in the dimensions, structure, and stress characteristics of different beam types, fixed-structure supports cannot meet the production needs of various beam types. Frequent changes to the support structure are not only time-consuming and labor-intensive but also increase production costs. Secondly, the production process of precast beams with different spans and cambers places different demands on the support's load-bearing capacity and alignment control. Traditional supports cannot flexibly adjust to adapt to these changes, leading to low production efficiency and difficulty in guaranteeing the quality of precast beams. Summary of the Invention

[0004] This application provides a precast beam platform suitable for multi-beam, multi-span, and multi-camber combination, to solve the problem in related technologies where traditional precast beam platforms cannot flexibly adjust beam type, span, and camber, resulting in low production efficiency.

[0005] Firstly, a precast beam abutment suitable for multi-beam, multi-span, and multi-camber composite structures is provided, comprising: A platform, wherein the platform is provided with a plurality of lifting holes, the axis of which is perpendicular to the length direction of the platform; Widening components are disposed on both sides of the pedestal, and each widening component includes at least: - A first connector is fixedly connected to the upper part of the side of the platform along the length direction of the platform; - The second connector is fixedly connected to the lower part of the side of the platform along the length direction of the platform; - Several third connectors are spaced apart and vertically fixed to the first connector and the second connector; The bottom mold is disposed above the widening component and spaced apart from the base in a direction perpendicular to the base.

[0006] In some embodiments, the top elevation of the widening component is at the same level as the top elevation of the pedestal, and the bottom mold is fixedly installed on the top of the widening component.

[0007] In some embodiments, the top elevation of the widened component is greater than the top elevation of the pedestal; The bottom mold is fixedly installed on the top of the widening component; A filling cavity is provided between the bottom mold, the widening component, and the base.

[0008] In some embodiments, both the first connector and the second connector are channel steel or angle steel, and their webs are attached to the side of the pedestal; The third connecting component is one or more of angle steel, channel steel, H-beam, and square steel pipe.

[0009] In some embodiments, the widening component further includes: Multiple fourth connectors are spaced apart along the length of the pedestal and connect the upper side of the pedestal to the first connector; Multiple fifth connectors are spaced apart along the length of the pedestal, connecting the lower side of the pedestal to the second connector.

[0010] In some embodiments, the fourth connector is a plurality of channel steel or square steel pipes spaced apart along the length of the pedestal; The fifth connecting component is one or more of the following: angle steel, channel steel, H-beam, and square steel pipe, which are spaced apart along the length of the pedestal.

[0011] In some embodiments, the fifth connector is disposed along the width direction of the pedestal.

[0012] In some embodiments, a sixth connector is pre-embedded on both sides of the pedestal; The sixth connector is disposed on the upper part of both sides of the base along the length direction of the base.

[0013] In some embodiments, the sixth connector is a channel steel with the opening facing outwards.

[0014] In some embodiments, the pedestal includes: Base A base is disposed above the base, and the projected area of ​​the base on the base is smaller than that of the base.

[0015] This application provides a precast beam support platform suitable for multi-beam, multi-span, and multi-camber composite precast beams. Multiple lifting holes on the platform allow it to accommodate precast beams of different spans. Widening components on both sides of the platform, including a first and second connector integrated with the platform, and several third connectors connecting the first and second connectors for support, widen the platform, enabling it to adapt to box girder platforms. When different cambers are required, the elevation of the widening components is adjusted. The bottom mold is positioned above the widening components, spaced vertically from the platform. High-strength grout is injected into the gap between the bottom mold and the platform to control the camber of the precast beam. Therefore, this beam support platform facilitates the production of multi-beam, multi-span, and multi-camber composite precast beams, improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A plan view of the precast beam platform provided in the embodiments of this application; Figure 2 A plan view of the precast beam platform widening component provided in the embodiments of this application; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of BB.

[0018] In the diagram: 1. Platform; 101. Lifting hole; 102. Sixth connector; 103. Base; 104. Base; 2. Widening component; 201. First connector; 202. Second connector; 203. Third connector; 204. Fourth connector; 205. Fifth connector; 3. Bottom mold; 4. Filling cavity. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] This application provides a precast beam platform suitable for multi-beam, multi-span, and multi-camber combination, which can solve the problem of low production efficiency caused by the inability of traditional precast beam platforms in related technologies to flexibly adjust beam type, span, and camber.

[0021] like Figures 1 to 4 As shown, a precast beam platform suitable for multi-beam, multi-span, and multi-camber composite structures includes: The platform 1 has multiple lifting holes 101, and the axis of the lifting holes 101 is perpendicular to the length direction of the platform 1. Widening components 2 are disposed on both sides of the base 1, and each widening component 2 includes at least: - The first connector 201 is fixedly connected to the upper part of the side of the base 1 along the length direction of the base 1; - The second connector 202 is fixedly connected to the lower part of the side of the base 1 along the length of the base 1; - A plurality of third connectors 203 are spaced apart and vertically fixed to the first connector 201 and the second connector 202; The bottom mold 3 is positioned above the widening component 2, and is spaced apart from the base 1 in the direction perpendicular to the base 1.

[0022] The main structure of pedestal 1 adopts a pedestal model combining steel modules and concrete. First, the minimum straight segment dimension of the T-beam was measured, and the foundation width of concrete pedestal 1 was determined accordingly. Simultaneously, the foundation length of pedestal 1 was set based on the longest beam length required in the project. To meet the production needs of precast beams with different spans, the positions and dimensions of the lifting holes were determined for each specific span, thus defining the final form of the concrete pedestal. This approach ensures the structural stability of pedestal 1 during the production of precast beams with different spans, and achieves universal adaptability to multiple beam specifications through the combination of a unified foundation and differentiated lifting hole layout. This effectively reduces redundant pedestal construction, improves the versatility and resource utilization of the precast site, and provides an efficient and intensive operational foundation for the production of multiple beam specifications in bridge precast construction.

[0023] Figure 1 This is a schematic diagram of the planar structure of a 50m precast beam platform. The lifting holes 101 are symmetrically arranged on both sides of the platform. From left to right, the first lifting hole 101 is reserved for lifting 50m T-beams, the second is suitable for lifting 48m and 49m T-beams, and the third is suitable for lifting 41m T-beams. The spacing of each lifting hole 101 is set according to the corresponding beam length, enabling a single platform 1 to accommodate beams of multiple spans.

[0024] Figures 2 to 4This is a partial schematic diagram of the base 103. When a box girder needs to be fabricated, a first connecting member 201 and a second connecting member 202 are fixedly connected to both sides of the base 103. The top of one connecting member is flush with the upper surface of the platform 1, and the bottom of the other connecting member is flush with the lower surface of the platform 1. A third connecting member 203 for support is set between the two connecting members, increasing the width of the platform 1 so that the T-beam platform can be adapted to the box girder platform. Compared with the use of jacks for support, which requires continuous maintenance of hydraulic or mechanical force and poses a risk of support failure due to equipment failure, the rigid connecting members of this solution form an integrated force-bearing system through fixed connection, requiring no additional power to maintain it. This allows it to maintain a stable support state during long-term use, reducing maintenance costs and safety hazards.

[0025] like Figure 4 As shown, when different pre-camber values ​​need to be set, the elevation of the first connecting parts 201 on both sides can be adjusted so that the top height of the first connecting parts 201 is higher than the top elevation of the platform 1, thereby controlling the pre-camber of the precast beam. Simultaneously, high-strength grout is injected into the filling cavity 4 between the bottom formwork 3 and the concrete platform 1, ensuring that the grout fully fills and solidifies the cavity 4, thus ensuring that the first connecting parts 201 and the concrete platform 1 form a tightly fitted integral structure. The adjustable elevation of the first connecting parts allows for flexible adjustment of the pre-camber, meeting the pre-camber parameter requirements of different beams. The high-strength grout filling the cavity 4 eliminates structural gaps caused by connection gaps, making the force transmission path between the first connecting parts 201 and the platform 1 more direct and continuous, avoiding local shaking or deformation caused by gaps under stress, and improving the structural rigidity and stability of the pre-camber adjustment area. Compared with traditional methods, this pre-camber setting method simplifies the operation process, improves the control accuracy of the pre-camber, and enhances its structural performance and stability in practical engineering applications.

[0026] This application provides a precast beam support platform suitable for multi-beam, multi-span, and multi-camber composite precast beams. Because multiple lifting holes 101 are provided on the platform 1, it can accommodate precast beams of different spans. Widening components 2 are provided on both sides of the platform 1. Each widening component 2 includes a first connecting member 201 and a second connecting member 202 connected to the platform 1, forming an integral part of the platform 1. A plurality of third connecting members 203 connect the first connecting member 201 and the second connecting member 202. The two connecting parts 202 provide support and can widen the width of the platform 1, making the T-beam platform compatible with the box girder platform. When different pre-camber needs to be accommodated, the elevation of the widening component 2 is adjusted. The bottom mold 3 is set above the widening component 2 and spaced vertically from the platform 1. High-strength grout is injected into the gap between the bottom mold 3 and the platform 1 to control the pre-camber of the precast beam. Therefore, the beam platform of this application facilitates the production of multi-beam, multi-span, and multi-camber combined precast beams, improving production efficiency.

[0027] Furthermore, the pedestal 1 includes: Base 103, The base 104 is located below the base 103, and the projected area of ​​the base 103 on the base 104 is smaller than that of the base 104.

[0028] As a supporting component below, the base 104 has a larger projected area, which can disperse the pressure transmitted by the base 103 and the upper structure when in contact with the ground or bearing surface, reduce the force per unit area, reduce damage to the bearing surface, and improve the stability of the platform 1. The relatively small projected area of ​​the base 103 can be adapted to the installation of upper equipment of different sizes and layouts. While ensuring stable support, it provides flexible space for the platform 1 to cooperate with other components. At the same time, the large projected area of ​​the base 104 also facilitates leveling and fixing operations during installation, enhancing the overall reliability and adaptability of the platform.

[0029] Furthermore, the top elevation of the widened component 2 is on the same horizontal plane as the top elevation of the base 1, and the bottom mold 3 is fixedly installed on the top of the widened component 2.

[0030] When no pre-camber is required, the top elevation of the widened component 2 is on the same horizontal plane as the top elevation of the platform 1, so that the bottom mold 3 can be in a flat state in the production scenario where there is no pre-camber requirement, providing a horizontal and stable forming foundation for the precast beam.

[0031] Furthermore, the top elevation of the widened component 2 is greater than the top elevation of the pedestal 1; The bottom mold 3 is fixedly installed on top of the widening component 2; A filling cavity 4 is provided between the bottom mold 3, the widening component 2, and the base 1.

[0032] When a pre-camber needs to be set, since the top of the widening component 2 is higher than the top of the pedestal 1, the bottom mold 3 installed on it will form a preset arc or tilt state according to the height change of the widening component 2, which matches the pre-camber curve required by the precast beam. Suitable filling material (such as high-strength grout) is injected into the filling cavity 4, so that a rigid support is formed between the bottom mold 3 and the pedestal 1. The precast beam load borne by the bottom mold 3 is evenly transferred to the pedestal 1 through the filling material, avoiding localized stress suspension caused by elevation differences. On the other hand, after the filling material cures, it can form an integrated structure with the bottom mold 3 and the pedestal 1, further enhancing the overall stability after the pre-camber is set, ensuring that the precast beam maintains accurate pre-camber dimensions throughout the forming process, and improving the structural accuracy and load-bearing performance of the precast beam.

[0033] Furthermore, both the first connector 201 and the second connector 202 are channel steel or angle steel, and their webs are attached to the side of the base 1. The third connector 203 is one or more of angle steel, channel steel, H-steel, and square steel pipe.

[0034] In this embodiment, the first connector 201 and the second connector 202 are channel steel, and the third connector 203 is angle steel. The third connector 203 is welded to the first connector 201 and the second connector 202. In some alternative embodiments, other forms of steel may also be used.

[0035] Furthermore, the widened component 2 also includes: Multiple fourth connectors 204 are spaced apart along the length of the platform, connecting the upper side of the platform 1 with the first connector 201, which can further widen the width of the platform 1. Multiple fifth connectors 205 are spaced apart along the length of the pedestal, connecting the lower side of the pedestal 1 to the second connector 202. The fifth connectors 205 can stabilize the connection between the lower part of the pedestal 1 and the second connector 202, and enhance the overturning resistance of the structure of the second connector 202.

[0036] Furthermore, the fourth connector 204 is a plurality of channel steel or square steel pipes spaced apart along the length of the base 1; The fifth connector 205 is one or more of angle steel, channel steel, H-steel, and square steel pipes that are spaced apart along the length of the base 1.

[0037] In this embodiment, both the fourth connector 204 and the fifth connector 205 are channel steel.

[0038] Furthermore, the fifth connector 205 is arranged along the width direction of the base 1 to enhance the anti-overturning capability of the second connector 202 structure.

[0039] Furthermore, a sixth connector 102 is pre-embedded on both sides of the base 1; The sixth connector 102 is disposed on the upper part of both sides of the base 1 along the length direction of the base 1.

[0040] The sixth connector 102 is used to reinforce both sides of the pedestal 1, which further enhances the lateral stability and load-bearing capacity of the pedestal 1 and effectively ensures the accuracy and quality of the box girder during the prefabrication process.

[0041] Furthermore, the sixth connector 102 is a channel steel with the opening facing outwards.

[0042] The fourth connector 204 is connected to the sixth connector 102 and the first connector 201 on the base 1 by spot welding, while the third connector 203 is firmly connected to the first connector 201 and the second connector 202 by welding, which further strengthens the structural integrity between the first connector 201 and the second connector 202.

[0043] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0044] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this 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 this application. Therefore, this application is not to 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

1. A precast beam support platform suitable for multi-beam, multi-span, and multi-camber composite structures, characterized in that, It includes: A platform (1) is provided with a plurality of lifting holes (101), the axis of which is perpendicular to the length direction of the platform (1); Widening components (2) are disposed on both sides of the base (1), and each widening component (2) includes at least: - The first connector (201) is fixedly connected to the upper part of the side of the base (1) along the length direction of the base (1); - The second connector (202) is fixedly connected to the lower part of the side of the base (1) along the length direction of the base (1); - A plurality of third connectors (203) are spaced apart and vertically fixed to the first connector (201) and the second connector (202); The bottom mold (3) is positioned above the widening component (2) and spaced apart from the base (1) in a direction perpendicular to the base (1).

2. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 1, characterized in that: The top elevation of the widening component (2) is on the same horizontal plane as the top elevation of the pedestal (1), and the bottom mold (3) is fixedly installed on the top of the widening component (2).

3. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 1, characterized in that: The top elevation of the widening component (2) is greater than the top elevation of the pedestal (1); The bottom mold (3) is fixedly installed on the top of the widening component (2); A filling cavity (4) is provided between the bottom mold (3), the widening component (2), and the base (1).

4. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 1, characterized in that: The first connector (201) and the second connector (202) are both channel steel or angle steel, and their webs are attached to the side of the base (1); The third connector (203) is one or more of angle steel, channel steel, H-steel, and square steel pipe.

5. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 4, characterized in that: The widening component (2) also includes: Multiple fourth connectors (204) are spaced apart along the length of the platform to connect the upper side of the platform (1) with the first connector (201). Multiple fifth connectors (205) are spaced apart along the length of the pedestal to connect the lower side of the pedestal (1) with the second connector (202).

6. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 5, characterized in that: The fourth connecting member (204) is a plurality of channel steel or square steel pipes spaced apart along the length direction of the platform (1); The fifth connector (205) is one or more of angle steel, channel steel, H-steel, and square steel pipes that are spaced apart along the length of the base (1).

7. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 6, characterized in that: The fifth connector (205) is arranged along the width direction of the base (1).

8. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 1, characterized in that: The platform (1) has a sixth connector (102) pre-embedded on both sides; The sixth connector (102) is disposed on the upper part of both sides of the base (1) along the length direction of the base (1).

9. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 8, characterized in that: The sixth connector (102) is a channel steel with the opening facing outwards.

10. The precast beam support platform applicable to multi-beam, multi-span, and multi-camber composite structures as described in claim 1, characterized in that: The platform (1) includes: Base (103) The base (104) is disposed above the base (103), and the projected area of ​​the base (104) on the base (103) is smaller than that of the base (103).

Images