Simple adjustable wedge-shaped support device for viaduct segment beam construction

Abstract

The utility model provides a simple adjustable wedge support device for viaduct segment beam construction. The support device comprises a support rail and a support assembly on the support rail. The support assembly comprises a support base plate, a cushion block and an adjusting assembly between the support base plate and the cushion block. The adjusting assembly comprises a threaded rod and two symmetrical wedge adjusting blocks between the support base plate and the cushion block. Limiting plates are arranged on both sides of the cushion block. The limiting plates extend vertically downward and are arranged on both sides of the two wedge adjusting blocks. The threaded rod is a bidirectional threaded rod. The two wedge adjusting blocks are threadedly connected to the two sections of the threaded rod with different directions of threads. Limiting nuts are arranged at both ends of the threaded rod. The utility model has a simple structure, fast processing and manufacturing, does not require a beam adjusting trolley, is convenient to reuse, saves production cost and shortens the construction period.

Description

Technical Field

[0001] This utility model relates to the field of prestressed concrete viaduct segmental beam construction technology, specifically a simple adjustable wedge-shaped support device for viaduct segmental beam construction, used to support and adjust the segmental beams during the construction process of prestressed concrete viaduct segmental beams. Background Technology

[0002] During the construction of prestressed concrete viaduct segmental beams, the segmental beams need to be hoisted to the installation position and their positions adjusted. After adjusting their height to ensure that the segmental beams are at the design elevation, the prestressing tendons are inserted into the holes in the segmental beams to achieve splicing.

[0003] In the current construction of segmental beams for viaducts, to ensure the stability of the segmental beams, a beam-adjusting trolley and four supporting jacks are typically used to adjust the beams. The beam-adjusting trolley reaches the support points via a track, and the four supporting jacks are fixedly installed at the four corners of the top of the beam-adjusting trolley. The beam-adjusting trolley mainly achieves three-dimensional adjustment of the segmental beams. The trolley consists of a three-layer composite structure: the bottom layer works with longitudinal hydraulic cylinders to adjust the segmental beams forward and backward; the middle layer works with transverse hydraulic cylinders to adjust the segmental beams left and right; and the top layer works with diagonally positioned hydraulic cylinders to adjust the segmental beams in planar rotation. The four supporting jacks adjust the elevation of the segmental beams. This entire process cannot be accomplished by individual jacks; it must be used in conjunction with the beam-adjusting trolley (the beam-adjusting trolley has its own height and plays a decisive role in controlling the elevation of the segmental beams). However, the existing beam-adjusting trolleys have a complex structure, high cost, and long production cycle, making it difficult to meet construction schedule requirements and increasing construction costs.

[0004] In addition, during the installation of segmental beams, after the three-dimensional linear control of the supported segmental beams is adjusted and temporarily tensioned with the previous segmental beam, the two supporting jacks at the rear are removed first. However, in order to ensure the stability of the segmental beam, the beam adjustment trolley and the two supporting jacks at the front cannot be removed. They can only be removed after the construction of the segmental beam of the viaduct is completed and permanent tensioning is performed. This means that the beam adjustment trolley and the two remaining supporting jacks cannot be reused, and the two removed supporting jacks cannot be reused without the beam adjustment trolley. Each segmental beam requires a separate set of beam adjustment trolleys and four supporting jacks during construction. The turnover and reuse rate of the beam adjustment trolley is low, resulting in a waste of resources. Summary of the Invention

[0005] The purpose of this utility model is to provide a simple adjustable wedge support device for the construction of segmental beams of viaducts. This support device does not need to be used with a beam adjustment trolley. It can be placed directly on the track to support and adjust the elevation of the segmental beams. It can be reused and has a high utilization rate. Moreover, the device has a simple structure, short processing cycle, and low cost.

[0006] To achieve the above objectives, this utility model provides a simple adjustable wedge support device for the construction of segmental beams of viaducts. The support device includes a supporting rail and a support assembly located on the supporting rail. The support assembly includes a supporting base plate, a pad, and an adjustment assembly placed between the supporting base plate and the pad. The adjustment assembly includes a threaded rod and two wedge-shaped adjustment blocks symmetrically inserted between the supporting base plate and the pad. The adjacent surfaces of the supporting base plate and the pad are respectively provided with inwardly inclined slopes. The upper and lower wedge-shaped surfaces of the two wedge-shaped adjustment blocks are respectively matched and fitted with the slopes of the supporting base plate and the pad. Limiting plates are provided on both sides of the pad, and the limiting plates extend vertically downward and block the two wedge-shaped adjustment blocks on both sides. The threaded rod is a bidirectional threaded rod, horizontally inserted between the supporting base plate and the pad. The two wedge-shaped adjustment blocks are respectively threaded onto two sections of threads in different directions on the threaded rod, and limiting nuts are provided at both ends of the threaded rod.

[0007] The preferred technical solution of this utility model is as follows: There are two supporting rails, which are arranged in parallel below the segment beam of the viaduct. Two sets of supporting components are placed on each supporting rail, and each segment beam of the viaduct is supported by four sets of supporting components.

[0008] The preferred technical solution of this utility model is as follows: baffles are provided on both sides of the supporting rail, and the height of the baffles matches the height of the supporting assembly in its lowest state.

[0009] The preferred technical solution of this utility model is as follows: U-shaped handles are provided at both ends of the pad block and at the outer ends of the two wedge-shaped adjusting blocks.

[0010] The preferred technical solution of this utility model is as follows: the limiting plate is provided in four pieces, which are welded to both sides of the pad in pairs, and the two limiting blocks on the same side are respectively located on the sides of the two wedge-shaped adjusting blocks.

[0011] The preferred technical solution of this utility model is that the supporting steel rail is an I-beam structure.

[0012] The beneficial effects of this utility model are:

[0013] (1) This utility model does not need to be used with the beam adjustment trolley. It can be placed directly on the track to replace the support jack for supporting and adjusting the elevation of the segment beam. It can also be reused, which greatly improves the utilization rate.

[0014] (2) This utility model has a simple structure, is easy to process, has a short production cycle, can be mass-produced, and can be put into use quickly, thus shortening the construction period and reducing construction costs.

[0015] This utility model has a simple structure and is quick to manufacture. The entire device does not require a beam-adjusting trolley, can be easily reused, and saves production costs. It effectively solves the problems of complex processing, long production cycle, inability to reuse, and high cost that exist when using existing beam-adjusting trolleys with supporting jacks for segmental beam construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is a side view of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of this utility model without the baffle.

[0021] Figure 6 This is a schematic diagram of the support component structure of this utility model;

[0022] Figure 7 This is a front view of the utility model in use;

[0023] Figure 8 This is a side view of the utility model in use.

[0024] In the diagram: 1—support rail; 2—limit nut; 3—limit plate; 4—pad; 5—U-shaped handle; 6—wedge-shaped adjusting block; 7—threaded rod; 8—baffle; 9—support base plate; 10—elevated bridge segment beam; 11—support component; 12—bracket. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 8 All accompanying drawings are simplified versions of embodiments and are intended solely for the purpose of clearly and concisely illustrating the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of embodiments of this utility model and are not intended to limit the scope of the claimed utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The embodiment provides a simple adjustable wedge support device for the construction of segmental beams of viaducts, such as Figures 1 to 6 As shown, the support device includes a support rail 1 and a support assembly 11 located on the support rail 1. The support rail 1 is an I-beam structure. The support assembly 11 includes a support base plate 9, a pad block 4, and an adjustment assembly placed between the support base plate 9 and the pad block 4. The adjustment assembly includes a threaded rod 7 and two wedge-shaped adjustment blocks 6 symmetrically inserted between the support base plate 9 and the pad block 4. The adjacent surfaces of the support base plate 9 and the pad block 4 are respectively provided with inwardly inclined slopes. The upper and lower wedge-shaped surfaces of the two wedge-shaped adjustment blocks 6 are respectively matched and fitted with the slopes of the support base plate 9 and the pad block 4. Limiting plates 3 are provided on both sides of the pad block 4. The limiting plates 3 extend vertically downward and block the two wedge-shaped adjustment blocks 6 on both sides. There are four limiting plates 3, which are welded to both sides of the pad block 4 in pairs. The two limiting blocks 3 on the same side are respectively located on the sides of the two wedge-shaped adjustment blocks 6. The threaded rod 7 is a bidirectional threaded rod, horizontally inserted between the support base plate 9 and the pad block 4. Two wedge-shaped adjusting blocks 6 are threadedly connected to the two different threads of the threaded rod 7, and limiting nuts 2 are provided at both ends of the threaded rod 7. Baffles 8 are provided on both sides of the support rail 1, and the height of the baffles 8 matches the height of the support assembly in its lowest state. U-shaped handles 5 are provided at both ends of the pad block 4 and at the outer ends of the two wedge-shaped adjusting blocks 6. The support assembly 11 is made of metal, and the U-shaped handles 5 are directly made of U-shaped steel bars, welded together, to facilitate assembly by construction personnel.

[0029] In this invention, the support assembly 11, under no-stress conditions, connects the pad 4, the support base plate 9, and the two left and right wedge-shaped adjusting blocks 6 via threaded rods 7. This allows the wedge-shaped adjusting blocks 6 to move along the threaded rods 7, thereby adjusting the height of the simple adjustable wedge-shaped support device and ultimately adjusting the elevation of the viaduct segment beam 10. The limiting plate 3 prevents the pad 4 from shifting laterally. The threaded rod 7 is tightened and fixed by the end limiting nut 2, and then the viaduct segment beam is placed on top of the support device. The support base plate 9 is not connected to the support rail 1, and the baffles 8 on both sides of the top of the support rail 1 prevent the wedge-shaped adjusting blocks 6 from shifting laterally and falling off the top of the support rail 1.

[0030] In practical use, this utility model, such as Figure 7 and Figure 8 As shown, there are two supporting rails 1, which are arranged in parallel below the viaduct segment beam 10. Two sets of supporting components 11 are placed on each supporting rail 1, and each viaduct segment beam 10 is supported by four sets of supporting components 11.

[0031] During the installation of a single-section viaduct segment beam 10, the support frame 12 is erected first. After the support frame 12 is erected, two support rails 1 are laid on top of the support frame 12. Before hoisting the viaduct segment beam 10, four support components 11 are pre-positioned on the support rails 1 and their height is adjusted. The viaduct segment beam 10 is then hoisted onto the four support components 11. The viaduct segment beam to be erected is then hoisted by a truck crane, and three-dimensional adjustment of the viaduct segment beam to be erected is performed. When the viaduct segment beam to be erected is matched in real time with the viaduct segment beam that has been erected and whose line control adjustment has been completed, the segment beam is matched successfully. If the segment beam is matched successfully, the three-dimensional line control of the viaduct segment beam to be erected is successful, and the viaduct segment beam is successfully erected.

[0032] Since the support device of this utility model does not require the use of a beam adjustment trolley, during the installation and use process, after the three-dimensional linear control of the supported segment beam is adjusted and the temporary tensioning with the previous segment beam is completed, the last two support devices can be quickly removed. Only the first two support devices need to be retained for support. The two removed support devices can be reused immediately, which improves the utilization rate of the support device.

[0033] In practical applications, when installing a single-section viaduct segment beam using existing beam-adjusting trolleys and support jacks, the cost of the trolley and support jacks is approximately 30,000 yuan, and the manufacturing and installation cycle is approximately 15 days. However, when using the support device of this invention to install a single-section viaduct segment beam, the cost of the support device for each segment beam is approximately 1,000 yuan, and the manufacturing and installation cycle is 1 day. Compared to the original method of installing viaduct segment beams using beam-adjusting trolleys and support jacks, the construction cost and construction cycle of this invention are significantly reduced.

[0034] The above description is merely one embodiment of this utility model, and while it is quite specific and detailed, it should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A simple adjustable wedge-shaped support device for the construction of segmental beams of viaducts, characterized in that: The support device includes a support rail (1) and a support assembly (11) located on the support rail (1). The support assembly (11) includes a support base plate (9), a pad block (4), and an adjustment assembly placed between the support base plate (9) and the pad block (4). The adjustment assembly includes a threaded rod (7) and two wedge-shaped adjustment blocks (6) symmetrically inserted between the support base plate (9) and the pad block (4). The adjacent surfaces of the support base plate (9) and the pad block (4) are respectively provided with inwardly inclined slopes. The upper surfaces of the two wedge-shaped adjustment blocks (6) are... The lower wedge-shaped surfaces are matched and fitted with the inclined surfaces of the support base plate (9) and the pad (4), respectively. Limiting plates (3) are provided on both sides of the pad (4). The limiting plates (3) extend vertically downward and are blocked on both sides of the two wedge-shaped adjusting blocks (6). The threaded rod (7) is a bidirectional threaded rod, which is horizontally inserted between the support base plate (9) and the pad (4). The two wedge-shaped adjusting blocks (6) are respectively threaded to the two different directions of the threaded rod (7), and limiting nuts (2) are provided at both ends of the threaded rod (7).

2. The simple adjustable wedge support device for the construction of segmental beams of viaducts according to claim 1, characterized in that: The support rail (1) is provided in two sections. The two support rails (1) are arranged in parallel below the viaduct segment beam (10). Two sets of support components (11) are placed on each support rail (1). Each viaduct segment beam (10) is supported by four sets of support components (11).

3. A simple adjustable wedge support device for the construction of segmental beams of viaducts according to claim 1 or 2, characterized in that: Baffles (8) are provided on both sides of the supporting rail (1), and the height of the baffles (8) matches the height of the supporting assembly in its lowest state.

4. The wedge-shaped support device for the construction of segmental beam of viaduct according to claim 1 or 2, characterized in that: U-shaped handles (5) are provided at both ends of the pad (4) and at the outer ends of the two wedge-shaped adjusting blocks (6).

5. A simple adjustable wedge support device for the construction of segmental beams of viaducts according to claim 1 or 2, characterized in that: The limiting plate (3) is provided in four pieces, which are welded to both sides of the pad (4) in pairs. The two limiting plates (3) on the same side are located on the sides of the two wedge-shaped adjusting blocks (6).

6. The wedge-shaped support device for the construction of segmental beam of viaduct according to claim 1 or 2, characterized in that: The supporting rail (1) is an I-beam structure.

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