Auxiliary device for main beam section construction on single-column bridge tower

Abstract

The utility model belongs to the technical field of cable-stayed bridge construction devices, and particularly relates to an auxiliary device for main beam section construction on a single-column bridge tower. According to the auxiliary device for main beam section construction on the single-column bridge tower, the supporting plates are arranged on the clamping frame units, so that 1, the auxiliary device can be fixed at any height on the single-column bridge tower according to requirements and does not need to be built from a bearing platform, and therefore, the auxiliary device is relatively simple in structure and does not need to use a large amount of steel materials; the stability and the building difficulty of the main beam section are irrelevant to the construction height of the main beam section; and 2, every two supporting plates are arranged on the left and on the right, so that the two required main beam sections are supported together, and the two main beam sections can balance the whole auxiliary device.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable-stayed bridge construction devices, and particularly relates to an auxiliary device for the construction of a main girder section used on a single-column bridge tower. Background Art

[0002] Generally, the main structural components of a cable-stayed bridge are: a bridge tower, a main girder, and stay cables. Among them, according to the different shapes of the bridge tower, cable-stayed bridges can be divided into: type A, type H, and single-column type, etc.

[0003] For an existing common single-column type cable-stayed bridge, the shape of its bridge tower itself is "thin at the top and thick at the bottom", and the two main girders are respectively arranged on both sides of the single-column bridge tower. The function of the above-mentioned auxiliary device is to support the main girder section before connecting the single-column bridge tower and the main girder section, so that it is fixed at the preset required height. After the above-mentioned connection operation is completed, the auxiliary device is removed.

[0004] Among them, the above-mentioned main girder section refers to the 0# block. After it is connected and fixed to the single-column bridge tower, the next adjacent steel box girder section is connected to the 0# block, and finally the complete cable-stayed bridge main girder can be constructed and installed. CN113463522A

[0005] For example, a Chinese invention patent application with the publication number CN113463522A and the publication date of October 1, 2021 discloses a capping beam construction auxiliary device, including: two triangular support units, which are respectively arranged on both sides of the pier along the length direction of the capping beam to be poured and can be assembled with each other to form an integral triangular bracket that can move synchronously along the length direction of the pier; a steel support frame, which forms a non-contact space for accommodating the pier around the pier and its two ends are respectively connected to the bottom frame of the triangular bracket and the bearing platform located below the pier, so that the external force received by the triangular bracket is transmitted to the bearing platform through the steel support frame; the triangular bracket is hoisted onto the steel support frame in a manner that there is a gap between it and the pier.

[0006] The general structural principle and advantages of the auxiliary device in this invention patent application are as follows: applying the modern standardized and cutting-edge modular solution idea to the technical field of capping beam construction, simplifying the originally complex construction system and cumbersome on-site assembly steps of the capping beam construction process into a highly executable and stable modular capping beam construction auxiliary system.

[0007] However, during the actual construction and use process of this auxiliary device, there is at least the following deficiency, which is also the technical problem to be solved by the utility model, that is:

[0008] Its supporting foundation is the bearing platform. Therefore, when the construction height of the capping beam is relatively high, the height of this auxiliary device has to be increased, which will reduce the supporting stability of this auxiliary device and increase the construction difficulty of this auxiliary device.

[0009] Therefore, to sum up, there is an urgent need for a new type of auxiliary device that will not reduce its own stability or increase its own construction difficulty even when the bridge construction height is relatively high, so as to be used to temporarily support the main girder section on the single-column bridge tower. Summary of the Invention

[0010] The present invention provides an auxiliary device for the construction of the main girder section on a single-column bridge tower, which can make:

[0011] 1. This auxiliary device can be fixed at any height on the single-column bridge tower as required without starting to build from the bearing platform. Therefore, the structure is relatively simple, without the need to use a large amount of steel, and its own stability and construction difficulty are independent of the construction height of the main girder section;

[0012] 2. Two support plates are arranged one on the left and one on the right, so that the two main girder sections required in total can be supported together, and the two main girder sections can also balance the entire auxiliary device itself.

[0013] The technical solution adopted by the present invention to solve the above problems is: an auxiliary device for the construction of the main girder section on a single-column bridge tower, the structure includes a clamping frame unit for sleeving on the single-column bridge tower, and a total of 4 support plates respectively arranged at both side positions on the clamping frame unit and used for supporting the main girder section.

[0014] A further preferred technical solution lies in that: the clamping frame unit includes 4 L-shaped plates for forming a rectangular frame shape.

[0015] A further preferred technical solution lies in that: the clamping frame unit further includes an inwardly protruding fixing block arranged on the L-shaped plate and used for clamping the single-column bridge tower.

[0016] A further preferred technical solution lies in that: the number of the clamping frame units is 2, which are arranged one above the other, and vertical connecting rods are arranged between the upper and lower clamping frame units and between the support plates.

[0017] A further preferred technical solution lies in that: screw connectors are arranged between the L-shaped plates, between the support plates, and between the L-shaped plate and the support plate.

[0018] A further preferred technical solution lies in that: vertical integral plates for increasing the installation quantity of the screw connectors are arranged on the L-shaped plates and the support plates.

[0019] A further preferred technical solution is that: the support plate is further provided with a protruding plate for connecting the support plates on the opposite sides.

[0020] A further preferred technical solution is that: the engaging frame unit further includes a rectangular hole provided on the L-shaped plate, and a connecting bolt provided on the rectangular hole and used for installing the inwardly protruding fixing block.

[0021] A further preferred technical solution is that: the support plate is further provided with a jack.

[0022] A further preferred technical solution is that: the jack is further provided with a bottom plate, and two upwardly inclined plates respectively provided at both side positions on the bottom plate and used for engaging the main beam section. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present invention from a top view angle.

[0024] Figure 2 It is a schematic diagram of the usage mode of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the engaging frame unit in the present invention.

[0026] Figure 4 It is a schematic diagram of the usage mode of the end plate in the prior art.

[0027] Figure 5 It is a schematic diagram of the usage mode of the vertical integral plate in the present invention.

[0028] Figure 6 It is a schematic diagram of the position of the vertical integral plate in the present invention from a top view angle.

[0029] Figure 7 It is a schematic diagram of the position and shape of the inwardly protruding fixing block in the present invention.

[0030] Figure 8 It is a schematic diagram of the position of the protruding plate in the present invention from a top view angle.

[0031] Figure 9 It is a schematic diagram of the position of the bottom plate and the upwardly inclined plate in the present invention.

[0032] Figure 10 It is a schematic diagram of the position of the jack in the present invention from a top view angle.

[0033] In the figure, the meanings of the respective marks are as follows:

[0034] Single-column bridge tower a, main beam section b, end plate c;

[0035] Clamping frame unit 1, support plate 2, vertical connecting rod 3, screw connector 4, vertical integral plate 5, protruding plate 6, jack 7, bottom plate 8, upward inclined plate 9;

[0036] L-shaped plate 101, inwardly protruding fixing block 102, rectangular hole 103, connecting bolt 104. Specific implementation mode

[0037] The following description is only for the preferred embodiments of the present invention, and does not limit the scope of the present invention.

[0038] As shown in the attached Figures 1-10 As shown, an auxiliary device for the construction of the main girder segment used on a single-column bridge tower, the structure includes a clamping frame unit 1 sleeved on the single-column bridge tower a, and a total of 4 support plates 2 respectively arranged on both sides of the clamping frame unit 1 and used for supporting the main girder segment b.

[0039] In this embodiment, the single-column bridge tower a is the installation object of the auxiliary device, and the 2 main girder segments b are the acting objects of the auxiliary device. After the 2 main girder segments b are stably installed on the single-column bridge tower a from left to right, the auxiliary device is removed, and then the auxiliary support operation for the installation of the 0-block of the main girder of the cable-stayed bridge is completed.

[0040] Among them, the single material of the clamping frame unit 1 is: I-beam, channel steel, and steel pipe, its shape is rectangular, and the length and width dimensions are adjustable. When the required installation height of the main girder segment b is relatively high, its length and width dimensions are adjusted to be relatively small, so that it is stuck on the relatively upper position of the single-column bridge tower a. On the contrary, its length and width dimensions are adjusted to be relatively large, so as to fully support the relatively lower main girder segment b.

[0041] In the above adjustment and use process, the auxiliary device does not need to be supported on the foundation platform, and its own structure does not need to be built upward from the foundation platform. Therefore, the required fixed height of the main girder segment b has nothing to do with the self-stability and construction difficulty of the auxiliary device, which is very practical.

[0042] On the other hand, the key points for the two main girder segments b to be stably supported on the single-column bridge tower a at least include:

[0043] First, the structural characteristics of the clamping frame unit 1 have both the convenience of adjusting the length and width dimensions and the structural stability after adjustment, so that it can be firmly stuck on the single-column bridge tower a and will not accidentally slide down;

[0044] Second, each of the support plates 2 itself has sufficient rigid strength, and thus can provide a large support strength;

[0045] Thirdly, between the engaging frame unit 1 and the support plate 2, generally there is no need for telescopic adjustment, and sufficient connection strength can be ensured.

[0046] Fourthly, between the two support plates 2 on the same side, it is necessary to adjust according to the length and width dimensions of the engaging frame unit 1, and move away from or close to each other as applicable, ensuring that the above-mentioned moving away or closing operation can be effectively carried out, and after moving away or closing, the two support plates 2 on the same side are still connected with high strength.

[0047] Finally, the word "plate" of the support plate 2 refers to its shape being a rectangular horizontal plate style, which is fully welded from existing materials such as the above-mentioned I-beams, channel steels, and steel pipes. From the top view angle, the contour shape of the support plate 2 is rectangular, while the shape of the internal reinforcement structure is uncertain and can be: X-shaped, Z-shaped, or grid-shaped, etc.

[0048] The engaging frame unit 1 includes 4 L-shaped plates 101 for forming a rectangular frame shape.

[0049] In this embodiment, the L-shaped plates 101 are also fully welded from existing materials such as I-beams, channel steels, and steel pipes. The general shape of the L-shaped plates 101 is L-shaped, but local structures for connection and self-reinforcement can also be set on the two plate bodies as needed, such as: reinforcing inclined plates at the bends, and connecting protruding blocks on the outer sides.

[0050] As long as the above local structures do not affect the effect that the engaging frame unit 1 is stuck and does not fall off after being sleeved on the single-column bridge tower a.

[0051] The engaging frame unit 1 further includes an inward protruding fixing block 102 provided on the L-shaped plate 101 and used for clamping the single-column bridge tower a.

[0052] In this embodiment, the inward protruding fixing block 102 can be provided on both the upper and lower surfaces of the L-shaped plate 101, and its function is to replace the L-shaped plate 101 to clamp the side surface of the single-column bridge tower a. Therefore, during the entire use process of this auxiliary device, the L-shaped plate 101 does not contact the single-column bridge tower a.

[0053] In the prior art, the cross-sectional general shape of the single-column bridge tower a is rectangular, and at least 1 inward protruding fixing block 102 is provided on each of the two plate bodies of the L-shaped plate 101, so that at least 2 inward protruding fixing blocks 102 are provided on each side surface of the single-column bridge tower a, and further the engaging frame unit 1 can be firmly and horizontally clamped at the required height on the single-column bridge tower a.

[0054] Among them, the material of the inward protruding fixing block 102 is high-strength steel.

[0055] The number of the engaging frame units 1 is two, which are arranged one above the other. Vertical connecting rods 3 are provided between the upper and lower engaging frame units 1 and between the support plates 2.

[0056] In this embodiment, the L-shaped plates 101 and the support plates 2 themselves can be welded by multiple layers of I-beams, channel steels, and steel pipes. However, essentially, only their own thicknesses are changed, and they can still be considered as single-plate structures. Therefore, although this auxiliary device with an overall single-plate structure style can be used, its clamping strength and support strength are relatively low, and it is only suitable for supporting relatively light main girder segments b.

[0057] The second structure style of this auxiliary device is a three-dimensional frame type, that is, the upper and lower two engaging frame units 1 are used together with the support plates 2 which are also in two layers up and down. Thus, the strength of clamping the single-column bridge tower a and the strength of supporting the main girder segment b can be significantly improved.

[0058] Among them, the single-layer thickness of the L-shaped plates 101 and the support plates 2 is, for example, 20 - 50 cm. For this auxiliary device in a two-layer style, its overall thickness can be 100 - 200 cm.

[0059] In addition, the material of the vertical connecting rods 3 can also be I-beams, channel steels, and steel pipes, and their inclination angles in the vertical plane can be selected arbitrarily.

[0060] However, it should be noted that at this time, for the upper and lower two circles of the inwardly protruding fixing blocks 102, it must be that the upper inwardly protruding fixing blocks 102 are relatively close to each other, and the lower inwardly protruding fixing blocks 102 are relatively far from each other, so that all the inwardly protruding fixing blocks 102 can be clamped on the single-column bridge tower a.

[0061] Screwing members 4 are provided between the L-shaped plates 101, between the support plates 2, and between the L-shaped plates 101 and the support plates 2.

[0062] In this embodiment, the positions for screwing on the L-shaped plates 101 and the support plates 2 can be the I-beams, channel steels, and steel pipes themselves. Holes can be directly drilled on them for screwing and assembling. In addition, opening plates can be welded on the I-beams, channel steels, and steel pipes as required, and then the screwing members 4 can be installed. Specifically, reference can be made to the appendix Figure 4 .

[0063] On the other hand, precisely because the effective screwing size of the screwing members 4 is adjustable, the engaging frame units 1 can be sleeved and clamped at any required height on the single-column bridge tower a and stopped. When the construction height of the main girder segment b is relatively high, the screwing members 4 can reduce their own effective screwing sizes. When the above construction height is relatively low, the nuts in the screwing members 4 can be appropriately screwed out.

[0064] Among them, the specific structure of the screw connector 4 consists of 1 bolt and 2 nuts. After rotational adjustment, the two nuts clamp each other to ensure that the required effective screw connection size will not accidentally increase.

[0065] Vertical integral plates 5 for increasing the installation quantity of the screw connector 4 are provided on both the L-shaped plate 101 and the support plate 2.

[0066] In this embodiment, if there is no vertical integral plate 5, even if all the effective areas on the side and the upper end are fully installed with the screw connector 4 between the two L-shaped plates 101, between the two support plates 2, and between the L-shaped plate 101 and the support plate 2, the quantity is relatively small and the connection strength is relatively insufficient.

[0067] Therefore, the usage of the vertical integral plate 5 is that it is first welded to the side and the upper end as mentioned above, then enough connection holes are opened on it, and finally enough screw connectors 4 can be installed. For details, please refer to the appendix Figure 5 .

[0068] Among them, the vertical integral plate 5 is made of high-strength steel plate, and its own size is not limited by the specific positions, quantities, and sizes of the side and the upper end mentioned above. Generally, its shape is rectangular.

[0069] The support plate 2 is further provided with a protruding plate 6 for connecting the support plates 2 on the opposite side.

[0070] In this embodiment, the first shape pattern of the support plate 2 is that in the longitudinal bridge direction, the sum of the widths of the two support plates 2 on the same side is close to the width dimension of the cross-section of the single-column bridge tower a in this direction. At this time, even if connection and reinforcement are required between the two support plates 2 on the opposite side, no suitable connection position can be found.

[0071] The second shape pattern of the support plate 2 is that in the longitudinal bridge direction, the sum of the widths of the two support plates 2 on the same side is much larger than the width dimension of the cross-section of the single-column bridge tower a in this direction. At this time, one end of the support plate 2 that does not need to be connected to another support plate 2 on the same side protrudes outwards, which is the installation position of the protruding plate 6.

[0072] Among them, the protruding plate 6 can be screwed or welded to the support plate 2, but the two protruding plates 6 must be screwed together to match the usage characteristics that the length and width dimensions of the clamping frame unit 1 need to be adjustable.

[0073] In addition, the protruding plate 6 is also made by welding an I-beam and / or a channel steel and / or a steel pipe.

[0074] The engaging frame unit 1 further includes a rectangular hole 103 provided on the L-shaped plate 101, and a connecting bolt 104 provided on the rectangular hole 103 and used for installing the inwardly protruding fixing block 102.

[0075] In this embodiment, the length direction of the rectangular hole 103 is generally perpendicular to the side surface of the single-column bridge tower a. It is used in combination with the connecting bolt 104 to make the inward protruding amplitude of the inwardly protruding fixing block 102 on the L-shaped plate 101 adjustable. There are mainly the following three applicable scenarios for the above adjustment operation of moving away from or approaching the single-column bridge tower a:

[0076] First, when the auxiliary device is initially assembled and used, according to the actual thickness size of the single-column bridge tower a at the construction height of the main girder segment b, first slide the connecting bolt 104, and then tighten the connecting bolt 104 to adjust the inward protruding fixing block 102 to an appropriate inward protruding amplitude, that is, an appropriate relative distance;

[0077] Second, the auxiliary device includes two engaging frame units 1 above and below. Then, the inwardly protruding fixing block 102 below needs to be appropriately slid outwards for adjustment;

[0078] Third, when the auxiliary device is used on a new single-column bridge tower a with a different thickness, all the inwardly protruding fixing blocks 102 need to be readjusted.

[0079] Among them, the rectangular hole 103 is generally opened on I-beams, channel steels, and square pipes, and it is difficult to open on round pipes.

[0080] A jack 7 is also provided on the support plate 2.

[0081] In this embodiment, the jack 7 is a commercially available product, and its basic function is to finely adjust the support height of the main girder segment b.

[0082] On the other hand, when multiple rows of the jacks 7 are arranged in the longitudinal bridge direction, it can also appropriately adjust the pitching angle of the main girder segment b as needed. This is its advanced function. For details, please refer to the appendix Figure 10 .

[0083] The jack 7 is also provided with a bottom plate 8, and two upwardly inclined plates 9 respectively provided at both side positions on the bottom plate 8 and used for engaging the main girder segment b.

[0084] In this embodiment, the bottom plate 8 and the two upwardly inclined plates 9 are integrally formed, and the material is high-strength steel. They are arranged on 2-3 jacks 7 in a row in the transverse bridge direction, so that the support action of the jack 7 on the main girder segment b has the advantages of small pressure and stable fitting.

[0085] The embodiments of the present utility model have been described in detail in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can be made without departing from the gist of the present utility model. These are all non-creative modifications and are protected by the patent law as long as they are within the scope of the claims of the present utility model.

Claims

1. An auxiliary device for main beam section construction on a single-column bridge tower, characterized in that: The structure comprises a snap-fit ​​frame unit (1) for being sleeved on a single-column bridge tower (a), and a total of four support plates (2) which are arranged in pairs at two sides of the snap-fit ​​frame unit (1) and are used to support a main beam section (b).

2. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 1, characterized in that: The snap-fit ​​frame unit (1) comprises four L-shaped plates (101) used to form a rectangular frame shape.

3. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 2, characterized in that: The snap-fit ​​frame unit (1) further comprises an inwardly protruding fixing block (102) arranged on the L-shaped plate (101) and used for clamping the single-column bridge tower (a).

4. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 1, characterized in that: The number of the snap-fit ​​frame units (1) is two, arranged one above and one below, and a vertical connecting rod (3) is provided between the upper and lower snap-fit ​​frame units (1) and between the support plates (2).

5. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 2, characterized in that: Screw-connecting parts (4) are provided between the L-shaped plates (101), between the support plates (2), and between the L-shaped plates (101) and the support plates (2).

6. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 5, characterized in that: The L-shaped plate (101) and the support plate (2) are both provided with a vertical integral plate (5) for increasing the number of installed screw-connecting members (4).

7. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 1, characterized in that: The support plate (2) is also provided with a protruding plate (6) for connecting to the support plate (2) on the opposite side.

8. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 3, characterized in that: The snap-fit ​​frame unit (1) further comprises a rectangular hole (103) arranged on the L-shaped plate (101), and a connecting bolt (104) arranged on the rectangular hole (103) and used for mounting the inwardly protruding fixing block (102).

9. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 1, characterized in that: The support plate (2) is also provided with a jack (7).

10. The auxiliary device for main beam section construction on a single-column bridge tower according to claim 9, characterized in that: The jack (7) is also provided with a bottom plate (8) and two upwardly inclined plates (9) respectively arranged at two side positions of the bottom plate (8) and used for engaging the main beam section (b).

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