Jack suspension device for bridge reconstruction construction

Abstract

The utility model provides a jack suspension device for bridge reconstruction construction. Relates to the field of bridge construction, and aims to solve the problem that a jack bracket is difficult to stably mount due to the fact that the width of the position, allowing the jack bracket to penetrate through, of the top of an existing bridge pier is insufficient. The auxiliary plate beam side face of the auxiliary plate can be meshed with the main plate beam side face through a tooth-shaped structure, the relative position of the auxiliary plate and the main plate can be restrained, obstacles at the position where the auxiliary plate is located can be avoided, and the width requirement for the position, allowing the main plate to penetrate through, above the pier is reduced. And stable bearing of the jack is ensured.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, and particularly relates to a jack suspension device for bridge reconstruction construction. Background Art

[0002] During the long-term use of a bridge, the safety and stability of the bridge structure may decline due to reasons such as foundation settlement, natural disasters, design defects, material aging, etc. In order to extend the service life of the bridge and improve its traffic capacity, jacking reconstruction has become an effective technical means. Bridge jacking uses specific mechanical and hydraulic devices to lift the bridge structure as a whole or in part to a predetermined height, so as to achieve the purposes of replacing bridge bearings, raising piers and abutments, adjusting bridge deck paving, etc. During the bridge jacking process, a jack support needs to be installed in advance. The jack support can fix the position of the jack and ensure that it does not displace during the jacking process, thereby ensuring the accuracy and stability of jacking.

[0003] There are already relatively complete methods and assemblies for the jacking reconstruction construction of conventional bridges. However, for some special bridges, there are certain difficulties in jacking construction. Some bridge piers are relatively high, and it is inconvenient to erect a relatively high support from the ground. Currently, a jack support is mostly installed on the pier to provide a fixed position. A reaction support tool for installing a jack disclosed in Chinese Patent (Publication No. CN211621265U) includes a steel bracket. The steel bracket is welded with a right-angle plate upwards. The right-angle plates of the steel bracket are symmetrically clamped on the top edges of both sides of the capping beam. The right-angle surfaces of the two right-angle plates located on the top surface of the capping beam are connected by a tie bolt; a slideway is fixed on the side surface of the capping beam below the steel bracket. Since the fixed position of the jack has certain requirements for the width, for the pier that has been constructed, there is a situation where the width at the position where the tie bolt passes through is insufficient, resulting in inconvenient arrangement of tie bolts with a large interval. By reducing the number of tie bolts or the spacing of tie bolts, the stability of the steel bracket supporting the jack is likely to be insufficient, affecting the working stability of the jack. Summary of the Utility Model

[0004] The purpose of the utility model is to address the defects existing in the prior art and provide a jack suspension device for bridge reconstruction construction. By using the main plate beam in the form of a plate to establish the connection of the main plate supports at both ends, the main plate can be laid on the pier. The side surface of the secondary plate beam of the secondary plate can be engaged with the side surface of the main plate beam through a toothed structure to restrict the relative position of the secondary plate and the main plate, and can avoid obstacles at the position of the secondary plate, reducing the width requirement for the position above the pier for the main plate to pass through. After the secondary plate support and the main plate support are assembled, a jack support is formed to ensure stable bearing of the jack.

[0005] To achieve the above purpose, the following technical solutions are adopted:

[0006] A jack suspension device for bridge reconstruction construction, comprising:

[0007] The main board includes a main board beam and main board supports connected to both ends of the main board beam. A main rack is provided on one side of the main board beam;

[0008] The secondary board includes a secondary board beam and a secondary board support at one end of the secondary board beam. A secondary rack is provided on one side of the secondary board beam. The main rack meshes with the secondary rack so that the main board beam and the secondary board beam are joined together. The main board support and the secondary board support are detachably connected by a connecting member and joined together to form a jack support. The main board beam and the secondary board beam are used to be laid on the top of the bridge pier, and the jack support extends outside the top surface of the bridge pier.

[0009] Further, the main rack is joined with two spaced-apart secondary racks, and the secondary board supports of the two secondary boards where the two secondary racks are located are respectively connected with the main board supports, so as to form jack supports at both ends of the main board respectively.

[0010] Further, the main board beam is distributed along the longitudinal bridge direction, and the main board beam and the secondary board beam are coplanarly distributed at the meshing position of the main rack and the secondary rack.

[0011] Further, the main board support includes a main pressing plate and a main supporting plate connected together. The main pressing plate and the main supporting plate are connected to form a T shape. The main pressing plate is connected to the main board beam and is used to fit against the side of the bridge pier, and the main supporting plate bears the jack; the secondary board support includes a secondary pressing plate and a secondary supporting plate connected together. The secondary pressing plate and the secondary supporting plate are connected to form a T shape. The secondary pressing plate is connected to the secondary board beam and is used to fit against the side of the bridge pier, and the secondary supporting plate bears the jack.

[0012] Further, a main stiffening rib is connected between the main supporting plate and the main pressing plate, and a secondary stiffening rib is connected between the secondary pressing plate and the secondary supporting plate.

[0013] Further, fixing holes are respectively provided on the main board support and the secondary board support, and the fixing holes are used to cooperate with fasteners to connect the jack.

[0014] Further, connecting holes are respectively provided on the main board support and the secondary board support, and the connecting member cooperates with the connecting holes to establish the connection between the main board support and the secondary board support.

[0015] Further, a plurality of main boards are provided, and the main boards laid on the top of the same bridge pier are spaced apart. The jack supports corresponding to different main boards are connected by connecting tie rods.

[0016] Further, the connecting tie rods are distributed along the transverse bridge direction, and associated holes for cooperating with the connecting tie rods are provided on the jack supports.

[0017] Further, the jack support is provided with a bearing surface for bearing the jack, and the bearing surface is parallel to the plane where the main board beam is located.

[0018] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0019] (1) Aiming at the problem that the width of the position on the top of the pier through which the jack support passes is insufficient at present, resulting in difficult and unstable installation of the jack support, the connection of the two main board supports is established by using the main board beam in the form of a plate member, so that the main board can be laid on the pier. The side of the secondary board beam of the secondary board can be engaged with the side of the main board beam through a toothed structure to restrict the relative position of the secondary board and the main board, and can avoid obstacles at the position where the secondary board is located, reducing the width requirement for the position on the pier through which the main board passes. After the secondary board support and the main board support are assembled, a jack support is formed to ensure stable bearing of the jack.

[0020] (2) The secondary board beam of the secondary board can be engaged with the main board beam to restrict the longitudinal slip of the secondary board. The secondary board support can be connected to the main board support to restrict the transverse slip of the secondary board, so that the secondary board beam is hooked on the top of the pier and the secondary board support abuts against the side wall of the pier, ensuring the stable position of the secondary board. There is no need to establish a direct connection between the secondary boards on both sides of the pier, so that a space for avoiding the structural obstacles of the pier is formed between the secondary boards on both sides, improving the layout flexibility.

[0021] (3) After the main board and the secondary board are assembled into a group, they can also be connected to another group at other positions of the pier, and the stability of the two groups of structures is maintained by using the transverse connecting tie rod, and the fixation of the transverse position is jointly realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The schematic diagrams in the specification forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0023] Figure 1 It is a schematic diagram of the jack suspension device for bridge reconstruction construction in the embodiment of the present utility model installed on the pier.

[0024] Figure 2 It is a schematic diagram of the jack suspension device for bridge reconstruction construction in the embodiment of the present utility model.

[0025] Figure 3 It is a schematic diagram of the main board in the embodiment of the present utility model.

[0026] Figure 4 It is a schematic diagram of the secondary board in the embodiment of the present utility model.

[0027] Figure 5 It is a schematic diagram of the cooperation between the main board and the secondary board in the embodiment of the present utility model.

[0028] In the figure, 1. Main board, 11. Main board beam, 12. Main board support, 13. Main stiffening rib, 2. Sub-board, 21. Sub-board beam, 22. Sub-board support, 23. Sub-stiffening rib, 3. Bridge support, 4. Bridge deck, 5. Bridge pier, 6. Expansion joint, 7. Connecting tie rod, 8. Jack. Specific implementation mode

[0029] In a typical implementation mode of the present utility model, as Figures 1 - 5 shown, a jack suspension device for bridge reconstruction construction is proposed.

[0030] As Figure 1 shown, a bridge support 3 is provided at the top of the bridge pier 5 of the bridge. The bridge support 3 supports the box girder, and a bridge deck 4 is formed on the top of the box girder. The box girders are erected between adjacent bridge piers 5. Along the longitudinal direction of the bridge, an expansion joint 6 is left between adjacent box girders. During the jacking process of the box girder of the bridge, it is necessary to pre-install a jack support 8, which can fix the position of the jack 8 and ensure that it does not displace during the jacking process, so as to ensure the accuracy and stability of the jacking. Affected by the layout of the bridge support 3, it is inconvenient to arrange the jack support 8. For this reason, this embodiment provides a jack suspension device for bridge reconstruction construction, which can establish the connection of the two ends of the main board support 12 by using the main board beam 11 in the form of a plate member, so that the main board 1 can be erected on the bridge pier 5. The side of the sub-board beam 21 of the sub-board 2 can be engaged with the side of the main board beam 11 through a toothed structure to restrict the relative position of the sub-board 2 and the main board 1, and can avoid obstacles at the position of the sub-board 2, reducing the width requirement for the position above the bridge pier 5 through which the main board 1 passes. After the sub-board support 22 and the main board support 12 are joined together, a jack support 8 is formed to ensure the stable bearing of the jack 8.

[0031] As Figure 1 and Figure 2 shown, the jack suspension device for bridge reconstruction construction mainly includes a main board 1 and a sub-board 2. The main board 1 is distributed along the full length of the top of the bridge pier 5, and the sub-board 2 is a segmented structure, which can form a common force with the main board 1, and avoids the distribution position of the bridge support 3, facilitating the installation of the entire suspension device on the top of the bridge pier 5 and meeting the stability requirements.

[0032] The main board 1 includes a main board beam 11 and main board supports 12 connected to both ends of the main board beam 11. A main rack is provided on one side of the main board beam 11. The auxiliary board 2 includes an auxiliary board beam 21 and an auxiliary board support 22 located at one end of the auxiliary board beam 21, and no auxiliary board support 22 is arranged at the other end. The end without the auxiliary board support 22 is used to avoid the bridge support 3 structure at the top of the pier 5. A secondary rack is provided on one side of the auxiliary board beam 21. The main rack and the secondary rack are meshed so that the main board beam 11 and the auxiliary board beam 21 are joined together. The main board support 12 and the auxiliary board support 22 are detachably connected through a connecting piece and joined together to form a support for the jack 8. The main board beam 11 and the auxiliary board beam 21 are used to be laid on the top of the pier 5. The support for the jack 8 extends outside the top surface of the pier 5, and the support for the jack 8 is suspended on both sides of the top of the pier 5 through the main board beam 11 and the auxiliary board beam 21.

[0033] The main board 1 is composed of a main board beam 11 and main board supports 12. A main rack is designed on one side of the main board beam 11 for engaging and connecting with the auxiliary board 2. The main board beam 11 and the main board supports 12 together serve as the foundation for load-bearing and connection and are laid on the top of the pier 5. The auxiliary board 2 includes an auxiliary board beam 21 and an auxiliary board support 22. A secondary rack is designed on one side of the auxiliary board beam 21 and meshes with the main rack of the main board 1 to achieve a tight connection between the two and the constraint of their relative positions. The design of the auxiliary board 2 enables the entire device to avoid obstacles on the pier 5, such as the bridge support 3 at the top of the pier 5, thereby reducing the requirement for the space above the pier 5.

[0034] The meshing design of the main rack and the secondary rack ensures a stable connection between the main board 1 and the auxiliary board 2. The main board support 12 and the auxiliary board support 22 are detachably connected through a connecting piece, and after being joined together, they form a support for the jack 8. This is convenient for installation and disassembly and also improves the flexibility and stability of the installation of the jack 8. The auxiliary board beam 21 of the auxiliary board 2 can engage with the main board beam 11 to restrict the longitudinal slip of the auxiliary board 2. The auxiliary board support 22 can be connected to the main board support 12 to restrict the transverse slip of the auxiliary board 2, enabling the auxiliary board beam 21 to be hooked on the top of the pier 5 and the auxiliary board support 22 to abut against the side wall of the pier 5, ensuring the stable position of the auxiliary board 2. There is no need to establish a direct connection between the auxiliary boards 2 on both sides of the pier 5, thus creating a space for avoiding the structural obstacles of the pier 5 between the auxiliary boards 2 on both sides and improving the flexibility of its layout.

[0035] Taking into account the diversity and complexity of the bridge reconstruction site, through the detachable connecting piece and the flexible toothed engagement structure, it can adapt to piers 5 of different sizes and shapes and quickly respond to different reconstruction requirements.

[0036] The space at the bridge reconstruction site is often limited, especially the top area of ​​the pier 5. In this embodiment, the design of the sub-plate 2 can effectively avoid obstacles on the pier 5 and reduce the demand for space above the pier 5. During the bridge reconstruction process, the jack 8 needs to stably bear a large amount of load. Through the combination of the main plate 1, the sub-plate 2 and the jack 8 support, a stable load-bearing structure is formed to ensure the safe operation of the jack 8. The piers 5 of different bridges have different structures and different reconstruction requirements. Through flexible connection and bite design, it can adapt to a variety of pier 5 structures and reconstruction requirements.

[0037] Since the device is easy to install and disassemble and can flexibly adapt to different bridge pier 5 structures, the construction time is greatly shortened and the construction efficiency is improved. The stable load-bearing structure and reliable connection design ensure the stable operation of the jack 8 during the bridge reconstruction process and reduce the construction risk. By reducing the demand for space above the bridge pier 5 and shortening the construction time, it helps to reduce construction costs and improve economic benefits.

[0038] like Figure 2 As shown, the main rack is combined with two spaced auxiliary racks to form a stable meshing structure. The connection strength between the main board 1 and the auxiliary board 2 is enhanced, and the stability of the overall structure is improved. Especially when bearing a large load, it can effectively disperse the stress and prevent structural damage. The structure is more stable and can withstand a larger load, which improves construction safety.

[0039] like Figure 5 As shown, the main plate beam 11 is distributed along the longitudinal bridge direction, and the main plate beam 11 and the auxiliary plate beam 21 are coplanarly distributed at the meshing position of the main rack and the auxiliary rack, ensuring that the main plate 1 and the auxiliary plate 2 have good contact and support at the connection, reducing stress concentration and wear caused by misalignment or unevenness, improving the strength and durability of the connection, and reducing maintenance costs.

[0040] like Figure 3 and Figure 4 As shown, the main plate support 12 includes a connected main pressure plate and a main support plate, the main pressure plate is connected to the main support plate to form a T-shape, the main pressure plate is connected to the main plate beam 11 and is used to fit the side of the pier 5, and the main support plate carries the jack 8; the auxiliary plate support 22 includes a connected auxiliary pressure plate and an auxiliary support plate, the auxiliary pressure plate is connected to the auxiliary support plate to form a T-shape, the auxiliary pressure plate is connected to the auxiliary plate beam 21 and is used to fit the side of the pier 5, and the auxiliary support plate carries the jack 8.

[0041] The main plate support 12 and the auxiliary plate support 22 both adopt a T-shaped structure, which is composed of a pressure plate and a support plate, which are respectively used to fit the side of the pier 5 and the bearing jack 8. The T-shaped structure provides better stability and bearing capacity, and the pressure plate can fit the pier 5 tightly, thereby enhancing the stability of the support. The support structure is more reasonable, has a strong bearing capacity, and is firmly installed.

[0042] There is a main stiffening rib 13 connected between the main supporting plate and the main pressing plate, and a secondary stiffening rib 23 connected between the secondary pressing plate and the secondary supporting plate. The addition of the stiffening ribs enhances the rigidity and stability of the bearing structure, preventing deformation or damage when bearing loads. It improves the overall strength and durability of the bearing and extends its service life.

[0043] As Figure 3 and Figure 4 shown, fixing holes are respectively provided on the main board bearing 12 and the secondary board bearing 22. The fixing holes are used to cooperate with fasteners to connect the jack 8; connecting holes are respectively provided on the main board bearing 12 and the secondary board bearing 22, and the connecting pieces cooperate with the connecting holes to establish the connection between the main board bearing 12 and the secondary board bearing 22. The fixing holes ensure that the jack 8 can be stably installed on the bearing, and the connecting holes facilitate the connection and disassembly between the bearings; it improves the installation efficiency and stability of the jack 8, and at the same time facilitates the adjustment and replacement during the construction process.

[0044] The fixing holes are located at the top of the main board bearing 12 and the secondary board bearing 22 and are distributed according to the installation method and force direction of the jack 8. Ensure that the jack 8 can be accurately and stably installed on the jack 8 bearing, preventing slippage or falling off during use. The size of the fixing holes needs to match the installation bolts or pins at the bottom of the jack 8 to ensure a tight fit and prevent loosening. The diameter of the fixing holes is usually slightly larger than the diameter of the bolts or pins for easy installation and disassembly. The depth of the fixing holes also needs to be determined according to the length of the bolts or pins to ensure that the bolts or pins can completely pass through the hole positions and be firmly fixed on the bearing.

[0045] The connecting holes are located on the sides of the main board bearing 12 and the secondary board bearing 22 and are used for the passage of connecting pieces (such as bolts, pins, welded parts, etc.) to achieve the connection and fixation between the main board bearing 12 and the secondary board bearing 22. The position and number of the connecting holes need to be determined according to the size, shape and connection requirements of the bearing to ensure the firmness and stability of the connection.

[0046] As Figure 5 shown, there are multiple main boards 1, and the main boards 1 erected on the top of the same bridge pier 5 are spaced apart. The jack 8 bearings corresponding to different main boards 1 are connected by connecting tie rods 7. Multiple main boards 1 are spaced apart and erected on the top of the bridge pier 5 and are transversely connected by connecting tie rods 7. It enhances the integrity and stability between the multiple main boards 1 and prevents relative displacement or overturning when bearing loads.

[0047] The connecting tie rods 7 are distributed along the transverse direction of the bridge, and the jack 8 bearings are provided with associated holes that cooperate with the connecting tie rods 7. It can be understood that the connecting holes can be used as the associated holes, and through the connecting tie rods 7 as the connecting pieces that cooperate with the connecting holes, on the basis of realizing the connection and fixation between the main board bearing 12 and the secondary board bearing 22, the connection of the jack 8 bearings corresponding to different main boards 1 is established to jointly maintain stability.

[0048] After the main board 1 and the auxiliary board 2 are joined together to form a group, they can also be connected to another group at other positions of the pier 5. The transverse connecting tie rod 7 is used to maintain the stability of the two groups of structures, and cooperate to fix the transverse position, ensuring the safety during the construction process.

[0049] The support of the jack 8 is provided with a bearing surface for carrying the jack 8, and the bearing surface is distributed parallel to the plane where the main board beam 11 is located, ensuring that the jack 8 can maintain horizontal stability during installation and use, avoiding uneven force and damage caused by inclination. It improves the use efficiency and safety of the jack 8 and extends its service life.

[0050] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A jack suspension device for bridge reconstruction construction, characterized in that: include: The main board includes a main board beam and main board supports connected to both ends of the main board beam, and a main rack is provided on one side of the main board beam; The auxiliary plate includes an auxiliary plate beam and an auxiliary plate support located at one end of the auxiliary plate beam. A secondary rack is provided on one side of the auxiliary plate beam. The main rack is meshed with the auxiliary rack to splice the main plate beam and the auxiliary plate beam. The main plate support and the auxiliary plate support are detachably connected through connecting pieces and spliced ​​to form a jack support. The main plate beam and the auxiliary plate beam are used to be erected on the top of the pier, and the jack support extends to the outside of the top surface of the pier.

2. The jack suspension device for bridge reconstruction construction according to claim 1, characterized in that: The main rack is combined with two auxiliary racks which are spaced apart, and the auxiliary plate supports of the auxiliary plate where the two auxiliary racks are located are respectively connected to the main plate supports to form jack supports at both ends of the main plate.

3. The jack suspension device for bridge reconstruction construction according to claim 1 or 2, characterized in that: The main plate beam is distributed along the longitudinal bridge direction, and the main plate beam and the auxiliary plate beam are distributed in the same plane at the meshing position of the main rack and the auxiliary rack.

4. The jack suspension device for bridge reconstruction construction according to claim 1, characterized in that: The main plate support comprises a main pressure plate and a main support plate connected to each other, the main pressure plate is connected to the main support plate to form a T-shape, the main pressure plate is connected to the main plate beam and is used to fit the side of the pier, and the main support plate carries the jack; The auxiliary plate support includes a connected auxiliary pressure plate and an auxiliary support plate. The auxiliary pressure plate is connected to the auxiliary support plate to form a T shape. The auxiliary pressure plate is connected to the auxiliary plate beam and is used to fit the side of the pier. The auxiliary support plate carries the jack.

5. The jack suspension device for bridge reconstruction construction as claimed in claim 4, characterized in that: A main stiffening rib is connected between the main supporting plate and the main pressing plate, and a secondary stiffening rib is connected between the secondary pressing plate and the secondary supporting plate.

6. The jack suspension device for bridge reconstruction construction as claimed in claim 4 or 5, characterized in that: The main board support and the auxiliary board support are respectively provided with fixing holes, and the fixing holes are used to cooperate with fasteners to connect the jack.

7. The jack suspension device for bridge reconstruction construction as claimed in claim 6, characterized in that: The main board support and the auxiliary board support are respectively provided with connection holes, and the connection pieces cooperate with the connection holes to establish the connection between the main board support and the auxiliary board support.

8. The jack suspension device for bridge reconstruction construction as claimed in claim 1, characterized in that: There are multiple main boards, which are arranged on the top of the same pier at intervals, and the jack supports corresponding to different main boards are connected by connecting rods.

9. The jack suspension device for bridge reconstruction construction as claimed in claim 8, characterized in that: The connecting rods are distributed along the transverse direction of the bridge, and the jack support is provided with associated holes that match the connecting rods.

10. The jack suspension device for bridge reconstruction construction according to claim 1, characterized in that: The jack support is provided with a bearing surface for bearing the jack, and the bearing surface is distributed parallel to the plane where the main board beam is located.

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