A support frame for erecting box girders on elevated side piers

Abstract

This utility model relates to the field of highway bridge construction technology, specifically a support for the erection of box girders on elevated side piers; it includes a supporting component and multiple connecting components; the connecting components can be connected to the supporting component, and the connecting components can be interconnected; the supporting component includes two pairs of base column groups arranged in a square array, with a base base provided below the base column groups; the connecting component includes two pairs of connecting pile groups, with a connecting top seat provided above both the base column groups and the connecting pile groups; an inner sleeve column is fixedly connected below each connecting base, and positioning grooves that cooperate with the inner sleeve columns are provided in both the base column groups and the connecting pile groups; two pairs of fixing mechanisms are provided on both the supporting component and the connecting component, the fixing mechanisms are symmetrically arranged, and the fixing mechanisms include a front positioning mechanism and a side positioning mechanism; a supporting platform is provided above the connecting pile groups; it effectively solves the problems of high risk, screw falling, and inconvenience in disassembly during the erection of pier box girder supports in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of highway bridge construction technology, specifically a support for the erection of box girders on elevated side piers. Background Technology

[0002] In the erection of box girders on elevated side piers, the selection and application of supports play a crucial role in the smooth progress of construction and the assurance of project quality. Currently, there are various common forms of scaffolding for the erection of box girders on elevated piers, such as the ground-supported scaffolding method, including the full-span scaffolding method and the steel pipe column support method. In practical engineering applications, the full-span scaffolding method, when the terrain of the construction area is complex and the piers are high, can lead to a significant increase in the settlement of the scaffolding and its foundations if the erection height is too large. This not only places stringent requirements on the foundations of the uprights but also makes it difficult to ensure stability. Furthermore, the on-site erection work is massive, requiring high labor intensity and a lengthy construction period, making it difficult to guarantee construction safety and quality under high pier conditions. While the steel pipe column support method can, to some extent, address the drawbacks of the large settlement of the full-span scaffolding supports, it places even higher demands on the stability of the upright foundations, requires extensive foundation and support reinforcement work, and faces significant challenges in erecting long steel columns under high pier conditions, resulting in high construction costs and difficulty in ensuring construction progress. In addition, both of these ground-supported scaffolding methods require ample space under the bridge to arrange the scaffolding, a condition often difficult to meet in elevated bridge construction scenarios such as crossing existing railway lines. The attached scaffolding construction method requires the installation of numerous attached connectors on the bridge piers. A complex beam connection structure and multiple horizontal connecting rods are used to connect the scaffolding system to the piers, thereby distributing and reducing the stress on the base. While this method is not limited by the ground surface, the initial workload is enormous, the risks for workers operating at heights are high, and the anchorage quality between the scaffolding and the piers requires extremely high standards. Because the generated loads include not only downward gravity but also torque on the support points, the structural strength of the bridge piers is severely tested, and damage to the pier structure may even be possible. Meanwhile, existing technologies for pier-box girder supports present numerous prominent problems during installation. Installation often requires a crane to hoist the support into place, and after hoisting, workers must immediately secure it. During this process, the support is not yet stable, and workers performing this securing operation at height poses a significant safety risk. Furthermore, while welding is used in many areas for securing, achieving strong connections, subsequent disassembly requires cutting, which is not only cumbersome and time-consuming but also potentially causes unnecessary damage to the support and pier, affecting the support's reusability. Additionally, during installation, workers often need to initially secure the support with screws; however, installing screws at height is extremely inconvenient and prone to failure, potentially causing screws to fall, impacting construction progress, and posing safety hazards to workers or equipment below. Some of the supports used for box girder erection have structural design deficiencies, making it difficult to flexibly adapt to the complex terrain and construction requirements of different elevated piers. In summary, existing support systems for erecting box girders on elevated side piers have many problems in terms of stability, ease of construction, cost control, installation safety, and adaptability to complex construction environments. There is an urgent need for a new type of support system to overcome these shortcomings and meet the growing demand for elevated side pier box girder erection projects. Utility Model Content

[0003] To address the aforementioned issues, this utility model proposes a support for the erection of box girders on elevated side piers. This effectively solves the problems of high risk, screw falling, and inconvenience in disassembly during the erection of pier box girder supports in the prior art, while also meeting the construction requirements for pier box girders of different heights.

[0004] To achieve the above objectives, this utility model proposes the following technical solution: A support for the erection of box girders on elevated piers, used for the construction of box girders on elevated piers, including a support component and multiple connecting components; the connecting components can be connected to the support component, and the connecting components can be interconnected; the support component includes two pairs of base column groups, which are arranged in a square array, and a base base is provided below the base column groups; the connecting component includes two pairs of connecting pile groups, which respectively cooperate with the corresponding base column groups, and a connecting base is provided below the connecting pile groups, and a connecting top seat is provided above both the base column groups and the connecting pile groups; multiple connecting mechanisms are provided on the connecting base, and threaded holes that cooperate with the connecting mechanisms are provided on the connecting top seat; an inner sleeve column is fixedly connected below each connecting base, and positioning grooves that cooperate with the inner sleeve column are provided in both the base column groups and the connecting pile groups; two pairs of fixing mechanisms are provided on both the support component and the connecting component, which are symmetrically arranged, and the fixing mechanisms include a positive positioning mechanism and a side positioning mechanism; a support platform is provided above the connecting pile groups.

[0005] Furthermore: the connecting mechanism includes a fixed slide fixedly connected to the connecting base, a rotating slide is provided inside the fixed slide, and a rotating groove that mates with the rotating slide is provided inside the fixed slide; an inner rotating stud is coaxially fixedly connected inside the rotating slide, and an extension threaded sleeve that mates with the inner rotating stud is fixedly connected to the connecting base, and the inner rotating stud also mates with a threaded hole on the connecting top seat.

[0006] Furthermore: both the foundation column group and the connecting pile group consist of a pair of supporting columns, with multiple pile connecting rods installed between the supporting columns, and both ends of the pile connecting rods being fixedly connected to the corresponding supporting columns; both the foundation column group and the connecting pile group are equipped with multiple fixed connecting platforms.

[0007] Furthermore: the positive positioning mechanism includes a positive cross link and a pair of positive horizontal links, the two ends of the positive horizontal links and the positive cross link are respectively connected to the corresponding fixed connecting platform; the fixed connecting platform is fixed with a fixing screw that cooperates with the positive horizontal link and the positive cross link, the fixing screw passes through the through holes at both ends of the positive horizontal link and the positive cross link; a first nut that cooperates with the fixing screw is screwed on the fixing screw.

[0008] Furthermore: the side positioning mechanism includes a side cross link and a pair of side horizontal links. Both ends of the side cross link and the side horizontal link are connected to corresponding fixed connecting platforms. Fixed mounting bases that mate with the side horizontal links and the side cross links are fixedly attached to the fixed connecting platforms. A polygonal inner groove is fixedly attached to the fixed mounting base. A sliding screw is slidably connected within the polygonal inner groove. A control rod is coaxially fixed to the sliding screw. A return spring is sleeved on the control rod. One end of the return spring is fixedly connected to the polygonal inner groove, and the other end is fixedly connected to the sliding screw. The fixed mounting base has a through hole that mates with the sliding screw. Both ends of the side horizontal link and the side cross link also have positioning holes that mate with the sliding screw. A second nut that mates with the sliding screw is screwed onto the sliding screw.

[0009] Furthermore: the sliding screw is polygonal, and a polygonal groove that mates with the sliding screw is provided inside the polygonal groove.

[0010] Furthermore, the base is provided with multiple connection holes, through which the base column assembly is fixed to the ground.

[0011] Compared with the prior art, the gain effect of this utility model is as follows: After the base column assembly is fixed to the ground via the base plate, the inner column and positioning groove can effectively achieve the initial fixation between the base column assembly and the connecting pile assembly. At this time, the hanger can be removed. After all the connecting pile assemblies are placed in place, the workers can use the connecting mechanism to tightly fix the base column assembly and the connecting pile assembly. Then, the connecting pile assembly at the same level is fixed by the fixing mechanism. This process greatly reduces the risk when assembling the base column assembly and the connecting pile assembly.

[0012] The cooperation between the positive positioning mechanism and the side positioning mechanism enables the tight fixing of the connecting pile group at the same level, thereby ensuring the stability of the foundation.

[0013] The coordinated arrangement of the foundation column assembly and the connecting pile assembly not only facilitates installation and dismantling but also meets the construction requirements of box girders with different heights. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present utility model.

[0015] Figure 2 This is a partial cross-sectional view of the present invention.

[0016] Figure 3 This is a partial perspective view of the present invention.

[0017] Figure 4 This is a cross-sectional view of the connecting mechanism of this utility model.

[0018] Figure 5 This is a cross-sectional view of the side positioning mechanism of this utility model.

[0019] Figure 6 This is a partial structural diagram of the present invention.

[0020] In the diagram: 1. Foundation column assembly, 2. Connecting pile assembly, 3. Support platform, 4. Foundation base, 5. Pile connecting rod, 6. Fixed bracket, 7. Side horizontal connecting rod, 8. Side cross connecting rod, 9. Front horizontal connecting rod, 10. Front cross connecting rod, 11. Inner sleeve column, 12. Fixed connecting platform, 13. Connecting base, 14. Fixed slide, 15. Rotating slide, 16. Inner rotating stud, 17. Sliding screw, 18. Return spring, 19. Polygonal inner groove, 20. Fixed screw, 21. Control rod. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. 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 scope of protection of this utility model.

[0022] A support frame for erecting box girders on elevated piers is used for the construction of box girders on elevated piers. It includes supporting components and multiple connecting components. The connecting components can be connected to the supporting components, and the connecting components can be interconnected. The supporting components include two pairs of base column groups 1 arranged in a square array, with a base base 4 below each base column group 1. The connecting components include two pairs of connecting pile groups 2, each cooperating with a corresponding base column group 1. A connecting base 13 is located below each connecting pile group 2, and a connecting top seat is located above both the base column group 1 and the connecting pile group 2. Multiple connecting mechanisms are provided on the connecting base 13, and threaded holes that mate with the connecting mechanisms are provided on the connecting top seat. Inner sleeve columns 11 are fixedly connected below each connecting base 13, and positioning grooves that mate with the inner sleeve columns 11 are provided inside both the base column group 1 and the connecting pile group 2. Two pairs of fixing mechanisms are provided on both the supporting components and the connecting components, arranged symmetrically, and include a positive positioning mechanism and a side positioning mechanism. A supporting platform 3 is located above the connecting pile group 2.

[0023] The connecting mechanism includes a fixed slide 14 fixedly connected to the connecting base 13, a rotating slide 15 disposed inside the fixed slide 14, and a rotating groove that mates with the rotating slide 15 disposed inside the fixed slide 14; an inner rotating stud 16 is coaxially fixedly connected inside the rotating slide 15, and an extension threaded sleeve that mates with the inner rotating stud 16 is fixedly connected to the connecting base 13, and the inner rotating stud 16 also mates with a threaded hole on the connecting top seat.

[0024] Both the foundation column group 1 and the connecting pile group 2 consist of a pair of support columns, with multiple pile connecting rods 5 installed between the support columns. The two ends of the pile connecting rods 5 are fixedly connected to the corresponding support columns. Both the foundation column group 1 and the connecting pile group 2 are equipped with multiple fixed connecting platforms 12.

[0025] The positive positioning mechanism includes a positive cross link 10 and a pair of positive horizontal links 9. The two ends of the positive horizontal links 9 and the positive cross link 10 are respectively connected to the corresponding fixed connecting platform 12. The fixed connecting platform 12 is fixedly connected with a fixing screw 20 that cooperates with the positive horizontal links 9 and the positive cross link 10. The fixing screw 20 passes through the through holes at both ends of the positive horizontal links 9 and the positive cross link 10. A first nut that cooperates with the fixing screw 20 is screwed onto the fixing screw 20.

[0026] The side positioning mechanism includes a side cross link 8 and a pair of side horizontal links 7. Both ends of the side cross link 8 and the side horizontal links 7 are connected to corresponding fixed connecting platforms 12. Fixed connecting platforms 12 are fixedly fitted with fixed brackets 6 that mate with the side horizontal links 7 and the side cross links 8. A polygonal inner groove 19 is fixedly fitted on the fixed bracket 6. A sliding screw 17 is slidably connected within the polygonal inner groove 19. A control pull rod 21 is coaxially fixed to the sliding screw 17. A return spring 18 is sleeved on the control pull rod 21. One end of the return spring 18 is fixedly connected to the polygonal inner groove 19, and the other end is fixedly connected to the sliding screw 17. The fixed bracket 6 has through holes that mate with the sliding screw 17. Both ends of the side horizontal links 7 and the side cross links 8 also have positioning holes that mate with the sliding screw 17. A second nut that mates with the sliding screw 17 is screwed onto the sliding screw 17.

[0027] The sliding screw 17 is polygonal, and the inner groove 19 of the polygon is provided with a polygonal groove that mates with the sliding screw 17.

[0028] The base 4 is provided with multiple connection holes, and the base column group 1 is fixed to the ground through the connection holes.

[0029] like Figure 1 , 2As shown in Figures 3, 4, 5, and 6: When operating this utility model, the worker places the base column assembly 1 in a suitable position on the ground, and then fixes the base column assembly 1 to the ground through the connecting holes on the base base 4. After completing the above operation, the positioning mechanism can fix adjacent base column assemblies 1. The positive positioning mechanism can fix the base column assemblies 1 in the same row, and the side positioning mechanism can fix the base column assemblies 1 on the same side. When the positive positioning mechanism is working, the two ends of the positive horizontal connecting rod 9 and the positive cross connecting rod 10 can be sequentially inserted into the fixing screws 20, and then the first nut is screwed into the fixing screws 20, thus fixing the positive horizontal connecting rod 9 and the positive cross connecting rod 10. The end of rod 10 is fixed; thus, the base column group 1 in the same row is fixed. When the side positioning mechanism is working, the sliding screw 17 is first pulled by the control rod 21 to retract. At this time, the return spring 18 is compressed. Then, the two ends of the side horizontal connecting rod 7 and the side cross connecting rod 8 are respectively placed into the corresponding fixing bracket 6. When the side horizontal connecting rod 7 and the side cross connecting rod 8 are placed in the appropriate position, the control rod 21 can be released. At this time, under the action of the return spring 18, the sliding screw 17 returns to its original position and passes through the positioning hole of the side horizontal connecting rod 7 and the side cross connecting rod 8. Finally, the second nut fixes the sliding screw 17.

[0030] Then, the connecting pile group 2 is placed above the base column group 1 using a hanger. At this time, the inner sleeve column 11 will be placed in the positioning groove inside the base column group 1, and the base column group 1 and the connecting pile group 2 will be initially fixed. After the connecting pile group 2 at the same level is placed, the base column group 1 and the connecting pile group 2 can be fixed by the connecting mechanism. During the operation of the connecting mechanism, the workers only need to rotate the rotating slide 15 by using an electric drill, etc. At this time, the rotating slide 15 will rotate and slide within the fixed slide 14; the inner rotating stud 16 will pass through the extension sleeve and be screwed into the threaded hole on the connecting top seat, thereby fixing the connecting top seat and the connecting base 13, and thus fixing the base column group 1 and the connecting pile group 2. Finally, the connecting pile group 2 at the same level is fixed by the fixing mechanism. The cooperative setting of the base column group 1 and the connecting pile group 2 not only facilitates installation and disassembly, but also meets the construction needs of pier box girders of different heights; it also effectively solves the problems of high risk, screw falling and inconvenience in disassembly during the erection of pier box girder supports in the existing technology.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 utility model 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 utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" 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; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A support for erecting box girders on elevated piers, used for the construction of box girders on elevated piers, characterized in that: It includes a support component and multiple connecting components; the connecting components can be connected to the support component, and the connecting components can be interconnected; the support component includes two pairs of base column groups (1), which are arranged in a square array, and a base base (4) is provided below the base column group (1); the connecting component includes two pairs of connecting pile groups (2), which are respectively matched with the corresponding base column group (1), and a connecting base (13) is provided below the connecting pile group (2), and a connecting base (13) is provided above both the base column group (1) and the connecting pile group (2). The top seat is connected; multiple connecting mechanisms are provided on the connecting base (13), and threaded holes that cooperate with the connecting mechanisms are provided on the connecting top seat; an inner sleeve column (11) is fixedly connected below the connecting base (13), and a positioning groove that cooperates with the inner sleeve column (11) is provided in the base column group (1) and the connecting pile group (2); two pairs of fixing mechanisms are provided on the supporting components and the connecting components, and the fixing mechanisms are symmetrically arranged. The fixing mechanisms include a positive positioning mechanism and a side positioning mechanism; a supporting platform (3) is provided above the connecting pile group (2).

2. The support for erecting box girders on elevated side piers according to claim 1, characterized in that: The connecting mechanism includes a fixed slide (14) fixedly connected to the connecting base (13), a rotating slide (15) provided inside the fixed slide (14), and a rotating groove that cooperates with the rotating slide (15) provided inside the fixed slide (14); an inner rotating stud (16) is coaxially fixedly connected inside the rotating slide (15), and an extension threaded sleeve that cooperates with the inner rotating stud (16) is fixedly connected to the connecting base (13), and the inner rotating stud (16) also cooperates with the threaded hole on the connecting top seat.

3. The support for erecting box girders on elevated side piers according to claim 1, characterized in that: Both the foundation column group (1) and the connecting pile group (2) consist of a pair of support columns. Multiple pile connecting rods (5) are provided between the support columns. The two ends of the pile connecting rods (5) are fixed to the corresponding support columns respectively. Multiple fixed connecting platforms (12) are provided on both the foundation column group (1) and the connecting pile group (2).

4. The support for erecting box girders on elevated side piers according to claim 3, characterized in that: The positive positioning mechanism includes a positive cross link (10) and a pair of positive horizontal links (9). The two ends of the positive horizontal links (9) and the positive cross link (10) are respectively connected to the corresponding fixed connecting platform (12). The fixed connecting platform (12) is fixed with a fixing screw (20) that cooperates with the positive horizontal link (9) and the positive cross link (10). The fixing screw (20) passes through the through holes at both ends of the positive horizontal link (9) and the positive cross link (10). The fixing screw (20) is screwed with a first nut that cooperates with it.

5. The support for erecting box girders on elevated side piers according to claim 3, characterized in that: The side positioning mechanism includes a side cross link (8) and a pair of side horizontal links (7). The two ends of the side cross link (8) and the side horizontal links (7) are respectively connected to the corresponding fixed connecting platform (12). The fixed connecting platform (12) is fixedly connected to a fixed bracket (6) that cooperates with the side horizontal link (7) and the side cross link (8). The fixed bracket (6) is fixedly connected to a polygonal inner slide groove (19). A sliding screw (17) is slidably connected in the polygonal inner slide groove (19). The sliding screw (17) is coaxial. A control rod (21) is fixedly connected, and a return spring (18) is sleeved on the control rod (21). One end of the return spring (18) is fixedly connected to the polygonal inner slide groove (19), and the other end of the return spring (18) is fixedly connected to the sliding screw (17). A through hole that mates with the sliding screw (17) is provided on the fixed bracket (6). Both ends of the side horizontal connecting rod (7) and the side cross connecting rod (8) are also provided with positioning holes that mate with the sliding screw (17). A second nut that mates with the sliding screw (17) is screwed onto the sliding screw (17).

6. The support for erecting box girders on elevated side piers according to claim 5, characterized in that: The sliding screw (17) is polygonal, and the inner groove (19) of the polygonal is provided with a polygonal groove that cooperates with the sliding screw (17).

7. The support for erecting box girders on elevated side piers according to claim 1, characterized in that: The base (4) is provided with multiple connection holes, and the base column group (1) is fixed to the ground through the connection holes.

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