Combined steel structure bridge support frame

Abstract

The present application relates to a combined steel structure bridge support frame, comprising a base, the base is connected with the assembled support frame, the support frame and the pier are respectively fixedly installed with a universal support, the universal support is provided with a support structure for supporting the bridge foundation, further comprising a structure for adjusting and aligning the support frame, comprising a mechanism arranged on the base for driving the support frame to rotate and an alignment mechanism arranged on the universal support for reflecting the adjusting effect of the support frame, and a mechanism for limiting and fixing the support frame, compared with the traditional way, the structure in the present application is more modular, and the positioning is convenient and does not need to be repeatedly positioned and calculated, the support frame can be reused after assembly, reducing the disassembly workload and improving the work efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of bridge construction, and particularly relates to a composite steel structure bridge support frame. Background Technology

[0002] In bridge construction, there are generally two types of scaffolding: those with scaffolding and those with scaffolding. Among the scaffolding types, the most commonly used is the disc-lock scaffolding. The construction steps for this type of scaffolding are roughly as follows: ① measuring and marking the baseline between the piers; ② placing adjustable bases; ③ placing disc-lock bases; ④ building the foundation components layer by layer. This not only involves numerous structural components and high positioning requirements, but also requires dismantling the scaffolding one by one after the bridge is completed, which wastes time.

[0003] To address this issue, a search of relevant patents revealed Chinese utility model patent CN 204753390 U, which discloses a support bracket that can be fixedly installed on bridge piers. This bracket has low construction difficulty, low investment, and the support rods can be reused. Based on this, if the disc-lock scaffolding is modularized and the support bracket can be reused, work efficiency can be greatly increased and the time wasted in dismantling scaffolding can be reduced. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a modular steel structure bridge support frame, which solves the problems of existing disc-lock scaffolding which is not only time-consuming and labor-intensive to assemble, but also requires dismantling the scaffolding piece by piece after construction, resulting in wasted time.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] Summary of the Invention: A combined steel structure bridge support frame, comprising a base positioned between bridge piers, characterized in that a support frame is fitted on the base, universal brackets are respectively provided on the support frame and the bridge piers, a matching column is fixedly connected to the support frame, the matching column engages with a positioning groove formed on the base, a rotating shaft is coaxially disposed below the positioning groove and rotatably connected to the base, a torsion column is vertically slidably connected to the rotating shaft and slidably engaged with the positioning groove, a lifting frame is vertically slidably connected to the side of the torsion column and is disposed within the base, the lifting frame is driven to slide vertically by a first hydraulic drive mechanism disposed within the base, and a first spring is disposed between the lifting frame and the torsion column.

[0007] The beneficial effects of this invention are:

[0008] 1. The present invention includes a base, on which an assembled support frame is connected. Universal brackets are fixedly installed on the support frame and the bridge pier respectively. The universal brackets are provided with a support structure to support the bridge base. Compared with the traditional disc-lock scaffolding, all structures of the present invention can be repeatedly used after assembly, which greatly improves convenience.

[0009] 2. The present invention also includes a structure for adjusting and aligning the support frame, including a mechanism on the base for driving the support frame to rotate, an alignment mechanism on a universal bracket for reflecting the adjustment effect of the support frame, and a mechanism for limiting and fixing the support frame. It does not require multiple measurements to determine the baseline, is easy to operate, and has a modular structure, making it convenient for replacement and maintenance. Attached Figure Description

[0010] Figure 1 This is the front view of the present invention.

[0011] Figure 2 This is a perspective view of the present invention.

[0012] Figure 3 This is a partial structural view of the present invention. Figure 1 .

[0013] Figure 4 This is a partial structural view of the present invention. Figure 2 .

[0014] Figure 5 This is a partial structural view of the present invention. Figure 3 .

[0015] Figure 6 This is a partial structural view of the present invention. Figure 4 .

[0016] Figure 7 This is a partial structural view of the present invention. Figure 5 .

[0017] Figure 8 This is a partial structural view of the present invention. Figure 6 .

[0018] In the diagram, 1. Base; 2. Support frame; 3. Universal bracket; 4. Mating column; 5. Positioning groove; 6. Rotating shaft; 7. Torsion column; 8. Lifting frame; 9. First hydraulic mechanism; 10. First spring; 11. First support rod; 12. Second support rod; 13. First support plate; 14. First liner plate; 15. Second spring; 16. Second hydraulic mechanism; 17. Third hydraulic mechanism; 18. Fourth hydraulic mechanism; 19. First screw; 20. Alignment plate; 21. Second liner plate; 22. Flange frame; 23. First slide groove; 24. Second slide groove; 25. First connecting plate; 26. Second connecting plate; 27. Fixing plate; 28. Pressure plate; 29. ​​Second screw; 30. Limiting seat; 31. Pin plate; 32. Third screw; 33. Top rod; 34. Ball bearing. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1-8 The specific embodiments of the present invention will be described in further detail below.

[0020] Example 1, in conjunction with Appendix Figure 1-8 The composite steel structure bridge support frame includes a base 1 positioned between bridge piers. In this embodiment, before installing the base 1, it needs to be positioned based on the two bridge piers, placing the base 1 on the central axis of the two piers and ensuring that the base 1 is equidistant from both piers. After determining the positioning point of the base 1, it is nailed and fixed to the prepared foundation, ensuring that the base 1 has sufficient support force. A support frame 2 is connected to the base 1. Typically, a universal support 3, constructed by connecting and splicing steel structural components, is installed on both the support frame 2 and the bridge piers. In this embodiment, the universal support 3 serves as the main structure supporting the bridge base section. During bridge construction, the universal support 3 is pre-fixed to the bridge piers where the bridge needs to be erected. The universal bracket 3 on the support frame 2 is assembled after being transported to the construction site. The assembled support frame 2 is then lifted by a crane and connected to the base 1. During this process, the support frame 2 needs to be aligned to ensure the parallel relationship between the support frame 2 and the bridge pier. In this embodiment, the connection structure between the base 1 and the support frame 2 includes: a matching column 4 is fixedly connected to the support frame 2. The matching column 4 cooperates with the positioning groove 5 opened on the base 1. The positioning of the matching column 4 and the positioning groove 5 allows the support frame 2 to be set on the central axis of the base 1, avoiding the positional deviation of the support frame 2 from affecting the subsequent bridge erection. After the matching column 4 on the support frame 2 is placed in the positioning groove 5, the support frame 2 needs to be adjusted and aligned, and then the support frame 2 needs to be limited.

[0021] The pre-designed mechanism for adjusting the rotation of the support frame 2 is as follows: A rotating shaft 6, rotatably connected to the base 1, is coaxially positioned below the positioning groove 5. A torsion column 7, which slides vertically on the rotating shaft 6 and slidably engages with the positioning groove 5, is pre-designed to allow the rotating shaft 6 to drive the torsion column 7 to rotate while simultaneously allowing the torsion column 7 to slide vertically (optionally, a spline structure can be used to connect the torsion column 7 and the rotating shaft 6, similar to the structure of an automotive drive shaft with a telescopic sleeve, ensuring that the rotating shaft 6 has strong torque resistance while also supporting the sliding of the torsion column 7). A lifting frame 8, vertically slidably connected to the side of the torsion column 7 within the base 1, is positioned within the first... The hydraulic mechanism 9 drives vertical sliding. Pre-set, the first hydraulic mechanism 9 can be a connection mechanism between a hydraulic cylinder and a hydraulic motor, capable of driving the lifting frame 8 to rise slightly, thus lifting the support frame 2. In this embodiment, the support frame 2, after being set on the base 1, also has a considerable weight. To ensure that the support frame 2 can rotate to a certain extent and thus be parallel to the pier, four push rods 33 are fixedly connected to the lifting frame 8. Each of the four push rods 33 has a ball bearing 34 slidably connected to it. In actual implementation, the action of the first hydraulic mechanism 9 drives the push rods 33 to rise and touch the support frame 2, then slightly lifts the support frame 2, ensuring that the support frame 2 is not completely flush with the base 1. The support frame 2 and base 1 should be tightly fitted together to ensure that the friction between them is not excessive due to the weight of the support frame 2. It is important to note that the support frame 2 should not be raised too high, and the crane should not be removed during the alignment process. The crane should not exert any force on the support frame 2; the steel chain connected to the support frame 2 should be loose enough to prevent the support frame 2 from tipping over. The friction between the support frame 2 and base 1 is reduced by the ball bearing 34 on the top rod 33. A first spring 10 is placed between the lifting frame 8 and the torsion column 7. The end face of the torsion column 7 that contacts the mating column 4 has a groove to increase friction, ensuring that the torsion column 8 is able to maintain its position under the action of the first spring 10. The shaft 6 is tightly pressed against the mating column 4 and subjected to the action of the first spring 10, which increases the friction between them. The shaft 6 is connected to the externally installed drive component through a transmission mechanism. In this embodiment, the transmission mechanism and drive component are not limited. The transmission mechanism can be a belt drive or a gear drive, and the drive component can be a high-power motor. The drive component can drive the shaft 6 to rotate, and then drive the support frame 2 to deflect through friction. It should be noted that in actual use, the deflection angle that the support frame 2 needs to be adjusted will not be too large. Therefore, the transmission mechanism should be set to be a differential drive to control the speed of the shaft 6.

[0022] When adjusting and aligning the support frame 2, it is necessary to ensure that the support frame 2 is parallel to the bridge pier. Therefore, an alignment mechanism is also required during this process to observe the alignment effect of the support frame 2. In this embodiment, to minimize errors, the alignment mechanism is set on a universal bracket 3, including a first sliding groove 23 and a second sliding groove 24 set on the universal bracket 3. Pre-set, the first sliding groove 23 is set on the universal bracket 3 connected to the bridge pier, and the second sliding groove 24 is set on the universal bracket 3 connected to the support frame 2. A first connecting plate 25 is vertically slidably fitted in the first sliding groove 23, allowing the first connecting plate 25 to slide and swing vertically within the first sliding groove 23. A second connecting plate 25 is slidably connected within the first connecting plate 25. Plate 26, pre-set, allows the second connecting plate 26 to slide omnidirectionally and swing to a certain extent within the first connecting plate 25. The second connecting plate 26 corresponds to and cooperates with the second sliding groove 24. In this embodiment, the second sliding groove 24 is a semi-through structure. The second connecting plate 26 is pulled out from the first connecting plate 25 and placed in the second sliding groove 24. When the second connecting plate 26 is placed in the second sliding groove 24, the first connecting plate 25 and the second connecting plate 26 cannot be guaranteed to be parallel to each other. When the support frame 2 is adjusted to deflect, the included angle between the first connecting plate 25 and the second connecting plate 26 will also change. Theoretically, when the first connecting plate 25 and the second connecting plate 26 are parallel, the support frame 2 and the pier will also be parallel. This allows the included angle between the support frame 2 and the pier to be reflected between the first connecting plate 25 and the second connecting plate 26. Pre-set, a fixing plate 27 is fixedly connected to the second connecting plate 25, and the fixing plate 27 is parallel to the second connecting plate 26. Pressure plates 28 are longitudinally slidably connected to the first connecting plate 25 on both sides of the fixing plate 27. Second screws 29 are rotatably connected to the pressure plates 28 and helically connected to the first connecting plate 25. Controlling the rotation of the two second screws 29 causes the two pressure plates 28 to move closer together and approach the fixing plate 27. Subsequently, when the support frame 2 deflects, the fixing plate 27 will also be driven to change its angle. This continuous approach of the two pressure plates 28 makes it easier to observe the first connecting plate 25. The included angle between the connecting plate 25 and the second connecting plate 26 is adjusted slowly and repeatedly until the two pressure plates 28 and the fixed plate 27 are observed to be parallel. This ensures the adjustment effect of the support frame 2. In this embodiment, multiple alignment mechanisms are pre-set for mutual reference to further reduce errors, ensuring the included angle between the pier and the support frame 2 is less than 1°. After alignment, the support frame 2 needs to be limited. Pre-set, the base 1 is provided with multiple limiting seats 30, which cooperate with multiple pin plates 31 fixedly connected to the support frame 2. In actual operation, when placing the support frame 2 and the base 1 together, it is necessary to ensure that the pin plates 31 are placed within the limiting seats 30.The pin plate 31 is threadedly engaged with a pair of third screws 32 threadedly connected to the limiting seats 30. This allows the support frame 2 to be tightened by twisting the third screws 32 located on the four limiting seats 30, thereby restricting the rotation of the support frame 2. Subsequently, a fixing mechanism is used to fix and support the support frame 2. In this embodiment, the fixing mechanism is similar to traditional scaffolding, but because of the presence of the base, the scale of scaffolding required to fix the support frame 2 is much smaller than that of using traditional scaffolding as a support component. This greatly reduces the workload during subsequent disassembly. Furthermore, once assembled, the support frame 2 can be repeatedly moved and used using a crane, making it more modular and improving engineering efficiency.

[0023] After adjusting and aligning the support frame 2, the next step of bridge erection can proceed. In this embodiment, the erection method is similar to traditional scaffolding methods, with the same bridge pouring steps and requirements, differing only in the support of the bridge foundation. Specifically: the upper end of the universal support 3 is fixedly connected to multiple sets of first support rods 11, and multiple sets of second support rods 12 are fixedly connected to these first support rods 11. The first support rods 11 and second support rods 12 are fixed at 90° to each other. Support structures for supporting the bridge foundation are provided on the multiple sets of second support rods 12. In this embodiment, the support structure is divided into a main support structure on the support frame 2 and a secondary support structure on the piers. The support mechanism includes a first support plate 13 mounted on a second support rod 12 that connects to the bridge pier. Multiple first liner plates 14 are vertically slidably connected to the first support plate 13. Second springs 15 are placed between the multiple first support plates 13 and the first liner plates 14. The multiple first liner plates 14 are driven by a second hydraulic mechanism 16 mounted on the second support rod 12. In this embodiment, the main support structure primarily supports the bridge foundation. The secondary support mechanism mounted on the bridge pier experiences less load than the main support mechanism mounted on the support frame 2. Therefore, the first liner plates 14 are only contacted by the second hydraulic mechanism 16, which includes fewer hydraulic cylinders. Furthermore, in actual use, the extension length of the second hydraulic mechanism 16, i.e., the limit position to which the first liner plates 14 can be pressed down, should be... With a consistent height in the main support mechanism, the main support structure includes a third hydraulic mechanism 17 mounted on a second support rod 12 that mates with the support frame 2. The third hydraulic mechanism 17 mates with a fourth hydraulic mechanism 18 located within the support frame 2. The third hydraulic mechanism 17 typically includes multiple sets of hydraulic cylinders driven by hydraulic motors. The fourth hydraulic mechanism 18 is similar to the second and third hydraulic mechanisms 16, but it serves as the main support and uses larger hydraulic cylinders. The second support rod 12, which mates with the support frame 2, is threaded with multiple vertically arranged first screws 19. Alignment plates 20 mate above the multiple first screws 19. The system includes two detachable second liner plates 21 that work together. Flange frames 22, which mate with the bridge foundation, are detachably connected to the two second liner plates 21. The alignment plates 20 are designed to position the second liner plates 21. The fixed positions of the flange frames 22 need to be pre-designed according to the bridge structure. Multiple alignment plates 20 are detachably connected to a third hydraulic mechanism 17 and a fourth hydraulic mechanism 18. In actual use, the alignment plates 20 are raised to a set height by the third hydraulic mechanism 17 and the fourth hydraulic mechanism 18. This height ensures that the bridge foundation, after being placed on the second liner plates 21, will not contact the piers. Subsequently, the second hydraulic mechanism 16 is adjusted to be at the same height as the third hydraulic mechanism 17 and the fourth hydraulic mechanism 18.At this height, during the process of placing the bridge base onto the second liner 21, the first liner 14 will be pressed against the second spring 15 and eventually contact the second hydraulic mechanism 16. At this time, the first liner 14 and the second liner 21 can evenly distribute the weight of the bridge base. When placing the bridge base, the bridge needs to be aligned to ensure its lateral position. Then, the second hydraulic mechanism 16 is lowered, followed simultaneously by the third hydraulic mechanism 17 and the fourth hydraulic mechanism 18, placing the bridge base onto the piers. During this process, the first liner 14 on both piers provides support, ensuring the smooth descent of the bridge base. After the base is placed on the bridge, the second hydraulic mechanism 16, the third hydraulic mechanism 17, and the fourth hydraulic mechanism 18 are raised sequentially, providing some support to the bridge base. The bridge foundation needs to be lifted from the piers. Then, the first screw 19 is adjusted so that it contacts the second liner 21, making the supporting force on the bridge foundation more even and facilitating load application. After the bridge pouring is completed, the first screw 19 is loosened, and then the second hydraulic mechanism 16, the third hydraulic mechanism 17, and the fourth hydraulic mechanism 18 are lowered sequentially. The second liner 21 is then removed from the alignment plate 20, and the limiting position on the support frame 2 is released. After dismantling the scaffolding fixing the support frame 2, a crane is used to move the support frame away. The steps described in the above embodiment are repeated at the next bridge section installation location. Compared to traditional methods, the structure of this invention is more modular, and positioning is convenient without the need for repeated positioning calculations. The support frame can be reused once assembled, reducing disassembly workload and improving work efficiency.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composite steel structure bridge support frame, comprising a base (1) positioned between bridge piers, characterized in that, A support frame (2) is fitted on the base (1). A universal bracket (3) is provided on the support frame (2) and the pier respectively. A matching column (4) is fixedly connected on the support frame (2). The matching column (4) is fitted with a positioning groove (5) opened on the base (1). A rotating shaft (6) is rotatably connected in the base (1) below the positioning groove (5). A torsion column (7) that is slidably fitted with the positioning groove (5) is vertically slidably connected on the rotating shaft (6). A lifting frame (8) that is vertically slidably connected in the base (1) is provided on the side of the torsion column (7). The lifting frame (8) is driven to slide vertically by a first hydraulic mechanism (9) set in the base (1). A first spring (10) is placed between the lifting frame (8) and the torsion column (7).

2. The combined steel structure bridge support frame according to claim 1, characterized in that, The universal support (3) is composed of steel structural components. Multiple sets of first support rods (11) are fixedly connected to the upper end of the universal support (3), and multiple sets of second support rods (12) are fixedly connected to the multiple sets of first support rods (11).

3. The combined steel structure bridge support frame according to claim 2, characterized in that, A first support plate (13) is fixedly connected to a second support rod (12) that is connected to multiple sets of bridge piers. Multiple first liner plates (14) are vertically slidably connected to the first support plate (13). A second spring (15) is placed between the multiple first support plates (13) and the first liner plates (14). The multiple first liner plates (14) are driven by a second hydraulic mechanism (16) set on the second support rod (12).

4. The combined steel structure bridge support frame according to claim 2, characterized in that, The universal bracket (3) on the support frame (2) is provided with two sets of bridge piers corresponding to the two sides respectively. Multiple sets of second support rods (12) connected to the support frame (2) are provided with third hydraulic mechanisms (17). The third hydraulic mechanism (17) cooperates with the fourth hydraulic mechanism (18) provided in the support frame (2).

5. The combined steel structure bridge support frame according to claim 4, characterized in that, The support frame (2) is connected to a second support rod with multiple vertically arranged first screws (19) threaded on it. Alignment plates (20) are fitted above the multiple first screws (19). Two second liner plates (21) are detachably connected to the multiple alignment plates (20). Flange frames (22) that cooperate with the bridge base are detachably connected to the two second liner plates (21). The multiple alignment plates (20) are respectively detachably connected to the third hydraulic mechanism (17) and the fourth hydraulic mechanism (18).

6. The combined steel structure bridge support frame according to claim 1, characterized in that, The alignment mechanism includes a first slide groove (23) and a second slide groove (24) set on a universal bracket (3). A first connecting plate (25) is vertically slidably fitted in the first slide groove (23). A second connecting plate (26) is slidably connected in the first connecting plate (25). The second connecting plate (26) is correspondingly fitted with the second slide groove (24). A fixing plate (27) is fixedly connected on the second connecting plate (26). Pressure plates (28) are longitudinally slidably connected on both sides of the fixing plate (27) on the first connecting plate (25). A second screw (29) is rotatably connected to the pressure plate (28) on the first connecting plate (25).

7. The combined steel structure bridge support frame according to claim 6, characterized in that, The first slide (23) is set on the universal support (3) connected to the pier, and the second slide (24) is set on the universal support (3) connected to the support frame (2). The second slide (24) is a semi-through structure, and the second connecting plate (26) can be placed in the second slide (24).

8. The combined steel structure bridge support frame according to claim 1, characterized in that, The base (1) is provided with a plurality of limiting seats (30), and the plurality of limiting seats (30) cooperate with a plurality of pin plates (31) fixedly connected to the support frame (2). The pin plates (31) are threadedly connected to a pair of third screws (32) threadedly connected to the limiting seats (30).

9. The combined steel structure bridge support frame according to claim 1, characterized in that, Four push rods (33) are fixedly connected to the lifting frame (8), and ball bearings (34) are slidably connected to the four push rods (33).

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