Supporting device for replacing bridge support

Abstract

The utility model discloses a supporting device for replacing a bridge support. The supporting device comprises a plurality of jacks and a plurality of bases. A groove is formed in the middle of each base, and the size of the groove corresponds to that of the bottom of the jack, so that the jack can be contained in the groove of the base; a plurality of bolt holes are formed in the side face of the part, contained in the groove, of the jack, and a plurality of bolt holes are correspondingly formed in the base, so that the jack and the base can be detachably and fixedly connected through a bolt structure. Moreover, the multiple bases comprise multiple sets of bases of different models, the depths of the grooves of the bases of different models are the same, and the overall heights of the bases of different models are different, so that the jack can be fixedly connected with the bases of different models to form overall structures of different heights. The jack does not need to be replaced under different construction conditions, only the base needs to be replaced, cost is saved, and construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge maintenance and replacement operations, and in particular to a support device for replacing bridge bearings. Background Technology

[0002] Excessive traffic volume and overloading can cause foundation settlement in bridges, leading to significant elevation changes, structural incompetence, and potentially serious safety accidents. While bridge bearings are typically replaced during reconstruction or expansion projects, this process is time-consuming, costly, and can exacerbate structural damage. Synchronous bridge jacking technology, however, allows for localized, simultaneous displacement jacking, enabling timely replacement of complex bearing structures and providing better support for bridge bearing replacement.

[0003] Currently, traditional bridge bearing replacement operations typically require the use of multiple jacks mounted on the piers as support devices. The box girder is lifted by the synchronous jacking of multiple jacks, and then the bridge bearing is replaced.

[0004] However, different bridge bearings have different heights, and jacks can only be used within their respective ranges. Before construction, the construction unit needs to measure the height of the bridge bearings to select the appropriate jack specifications. When selecting specifications, the lifting force and maximum stroke of the jacks must be considered to ensure that the jacks operate within a safe range. If the bridge bearing height is unsuitable, it is necessary to replace or purchase different models of jacks, leading to increased costs and delays in the construction period. Utility Model Content

[0005] To address the problems mentioned in the background section, the present invention adopts the following technical solution:

[0006] A bridge bearing replacement support device includes multiple jacks and multiple bases;

[0007] Each base has a groove in the middle, and the size of the groove corresponds to the bottom of the jack, so that the jack can be accommodated in the groove of the base.

[0008] The jack is housed in a groove and has multiple bolt holes on its side. The base has corresponding bolt holes, so that the jack and the base can be detachably fixed together by bolts.

[0009] Furthermore, the multiple bases include multiple sets of bases of different models. The groove depth of the bases of different models is the same, but the overall height is different, so that the jack can be fixedly connected to the bases of different models to form an overall structure of different heights.

[0010] In some embodiments, a plurality of distribution beams are also included, which are positioned between the tops of the plurality of jacks and the bridge box girder to be lifted during operation.

[0011] In some embodiments, the jack is a self-locking hydraulic jack.

[0012] In some embodiments, the lower part of the base is cylindrical, and the upper part is a frustum shape with a diameter that gradually decreases from bottom to top. The frustum-shaped area is the same for different models of bases, but the height of the cylindrical area is different.

[0013] In some embodiments, the heights of the cylindrical areas of the bases of different models are 3cm, 5cm, 8cm, 10cm, 15cm and 20cm respectively.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The bridge bearing replacement support device provided by this utility model adopts multiple sets of bases with different heights. When it is necessary to replace the bridge bearing, after the construction unit measures the height of the bridge bearing, it can select bases of different heights to match the jacks as needed, so that the overall height of the jacks and bases meets the construction requirements. Thus, it is not necessary to replace the jacks under different construction conditions, but only the bases, thereby saving costs and improving construction efficiency. The bases and jacks are fixed by bolts, and the bases adopt a special shape to lower the center of gravity and improve the safety and stability during construction. Attached Figure Description

[0015] Figure 1 A schematic diagram showing the usage status of the bridge bearing replacement support device provided by this utility model;

[0016] Figure 2 This is a schematic diagram showing the jack and its base working together.

[0017] Explanation of icon numbers:

[0018] 1. Jack; 2. Base; 3. Bolted structure; 4. Distribution beam; 5. Box girder. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with the accompanying drawings and specific embodiments, further explains how this utility model is implemented.

[0020] Reference Figure 1 and Figure 2As shown, this utility model provides a bridge bearing replacement support device, including multiple jacks 1 and multiple bases 2; each base 2 has a groove in the middle, and the size of the groove corresponds to the bottom of the jack 1, so that the jack 1 can be accommodated in the groove of the base 2; multiple bolt holes are opened on the side of the part of the jack 1 that is accommodated in the groove, and several bolt holes are correspondingly opened on the base 2, so that the jack 1 and the base 2 can be detachably fixedly connected by bolt structure 3; and the multiple bases 2 include multiple sets of bases 2 of different models, the groove depth of different models of bases 2 is the same, and the overall height is different, so that the jack 1 can be fixedly connected with different models of bases 2 to form an overall structure of different heights.

[0021] Preferably, the bridge bearing replacement support device further includes several distribution beams 4. During operation, the distribution beams 4 are positioned between the tops of the multiple jacks 1 and the bridge box girder 5 that needs to be lifted. By setting the distribution beams 4 between the box girder 5 and the multiple jacks 1, stress concentration during the lifting process can be avoided, preventing localized damage to the box girder 5.

[0022] Preferably, the jack 1 is a self-locking hydraulic jack, thereby achieving self-locking control in case of abnormal power failure and improving construction safety.

[0023] Preferably, the lower part of the base 2 is cylindrical, and the upper part is a frustum-shaped structure with a diameter that gradually decreases from bottom to top. The frustum-shaped areas are the same for different models of base 2, but the heights of the cylindrical areas are different. This structure lowers the center of gravity of the base 2, improving safety and stability during construction.

[0024] In one specific embodiment, the heights of the cylindrical areas of different models of base 2 are 3cm, 5cm, 8cm, 10cm, 15cm and 20cm, respectively, which can be flexibly replaced according to actual needs.

[0025] In summary, the bridge bearing replacement support device provided by this utility model uses multiple sets of bases 2 with different heights. When the bridge bearing needs to be replaced, the construction unit can select bases 2 of different heights to match the jacks 1 after measuring the height of the bridge bearing, so that the overall height of the jacks 1 and bases 2 meets the construction requirements. Thus, it is not necessary to replace the jacks 1 under different construction conditions, but only the bases 2 need to be replaced, thereby saving costs and improving construction efficiency. The bases 2 and the jacks 1 are fixed by bolt structure 3, and the bases 2 adopt a special shape to lower the center of gravity and improve the safety and stability during construction.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A replacement bridge abutment support apparatus, characterized by, The jack (1) and the base (2) are connected by the bolt structure (3). The recess is provided in the middle of the base (2), and the size of the recess corresponds to the bottom of the jack (1), so that the jack (1) can be accommodated in the recess of the base (2). The side surface of the jack (1) accommodated in the recess is provided with a plurality of bolt holes, and the base (2) is provided with a plurality of bolt holes corresponding to the bolt holes of the jack (1), so that the jack (1) and the base (2) can be detachably connected by the bolt structure (3). In addition, the plurality of bases (2) include a plurality of groups of bases (2) of different models, the recesses of the bases (2) of different models have the same depth and different overall heights, so that the jack (1) can be fixedly connected with the bases (2) of different models to form overall structures of different heights.

2. The replacement bridge pier support apparatus of claim 1, wherein, The distribution beam (4) is provided between the top of the plurality of jacks (1) and the bridge box girder (5) to be jacked up.

3. The replacement bridge pier support apparatus of claim 1, wherein, The jack (1) is a self-locking hydraulic jack.

4. The replacement bridge pier support apparatus of claim 1, wherein, The lower part of the base (2) is a cylinder, and the upper part is a circular truncated cone with a diameter gradually decreasing from bottom to top. The circular truncated cone regions of the bases (2) of different models are the same, and the heights of the cylindrical regions are different.

5. The replacement bridge pier support apparatus of claim 4, wherein, The heights of the cylindrical regions of the bases (2) of different models are 3 cm, 5 cm, 8 cm, 10 cm, 15 cm, and 20 cm, respectively.

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