Jacking supporting structure for extension of urban viaduct

Abstract

The utility model discloses an urban viaduct extension jacking support structure, which comprises a pier, the upper surface of the pier is fixedly connected with a pillar, the upper surface of the pillar is provided with a box girder in a combined manner, the upper surface of the pier is provided with a support plate in a positioning manner, and the upper surface of the support plate is fixedly provided with a positioning seat. A jacking hydraulic cylinder is fixedly connected to the upper surface of the positioning seat, a combined threaded head is fixedly connected to a rod head of the jacking hydraulic cylinder, a combined threaded barrel is installed at one end of the combined threaded head in a threaded mode, a supporting plate is fixedly connected to one end of the combined threaded barrel, and one side of the supporting plate is connected to the lower surface of the box girder in a jacking mode. Limiting plates are fixedly connected to the two ends of the supporting plate, the limiting plates are clamped to the surfaces of the two ends of the box girder, connecting rods are fixedly connected to the two ends of the supporting plate, the supporting plate can be combined and connected for supporting, auxiliary guiding can be achieved, the safety and stability of jacking are improved, and adjustment and use are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of viaduct, more specifically, relate to a city viaduct extension jacking support structure. BACKGROUND

[0002] Bridge jacking technology as an economic, efficient, environmental protection displacement treatment means, is mainly applied to support replacement, elevation adjustment and lower structure maintenance and reinforcement reconstruction engineering, has been widely applied in bridge construction and maintenance and reinforcement reconstruction, for a specific bridge jacking reconstruction engineering, the beam body is easy to produce transverse and longitudinal displacement in the jacking process, how to strengthen the design of longitudinal and transverse limiting device, ensure that the device has enough stiffness, meet the requirements of longitudinal and transverse limiting, and have enough safety reserve, how to avoid the hydraulic jack failure caused by hydraulic failure and cause beam falling accident, how to ensure the stability design of support system, ensure enough safety reserve. These problems will be related to the economy, feasibility and safety of the project itself.

[0003] And the application with the authorization announcement number CN113216014A relates to the construction method of the high viaduct slope adjustment high connection high jacking structure, including steps: 1) traffic guide changes, 2) support system installation, 3) limiting device installation, 4) jack pre-jacking, 5) whole jacking of viaduct, 6) pier column heightening. The beneficial effects of the present application are: the present application sets adjustable steel box cushion block on the bent cap, the adjustable steel box cushion block includes standard steel box cushion block and adjustable cushion block, which can finely adjust the height of the steel box cushion block as temporary protection support, the present application installs two bent cap hoops on the bent cap, and installs limiting steel plates on the bent cap hoops. The limiting steel stand is fixed at the bottom of the box girder, so that the limiting steel stand is located between the two limiting steel plates, limiting the transverse and longitudinal displacement of the box girder, the present application sets pier column hoops on the pier column, and sets corbels on both sides of the pier column hoops, then installs and erects the steel support frame on the corbels, connects each steel pipe support through the steel support frame, and improves the stability of the support system.

[0004] In the above-mentioned disclosed structure, the jacking support structure is combined and installed on the side of the pier column, which needs to be installed with the pier column, is not conducive to stable support positioning, is not convenient to place directly, and lacks a combined adjusting supporting plate and a guide U-shaped frame, so that positioning and combination cannot be guided and supported, affecting the accuracy of jacking, being prone to misalignment, and lacking safety, which needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model discloses a city viaduct extension jacking support structure, through the support plate installation positioning seat and jacking hydraulic cylinder on the bridge pier, can be placed flat, benefit alignment installation, and through the supporting of the limit board of the supporting plate connection, the combination of the connecting rod installation guide U -shaped frame can be combined and connected to support, and can assist the guidance, improve the safety stability of jacking, benefit adjustment uses.

[0006] To solve the above problems, the utility model adopts the following technical scheme.

[0007] A city viaduct extension jacking support structure, including bridge pier, the upper surface of bridge pier is fixedly connected with support column, the upper surface of support column is combinedly installed with box girder, the upper surface of bridge pier is positioned and placed with support plate, the upper surface of support plate is fixedly installed with positioning seat, the upper surface of positioning seat is fixedly connected with jacking hydraulic cylinder, the rod head of jacking hydraulic cylinder is fixedly connected with combined screw head, one end of combined screw head is threadedly installed with combined screw cylinder, one end of combined screw cylinder is fixedly connected with supporting plate, one side of supporting plate is tightly connected to the lower surface of box girder, both ends of supporting plate are fixedly connected with limit board, and the limit board is clamped to the both end surfaces of box girder, and both ends of supporting plate are fixedly connected with connecting rod, and one end of connecting rod is fixedly connected with guide U-shaped frame, and the inner side surface of guide U-shaped frame is slidably connected to one side of the outer surface of support column.

[0008] Further, one side of the inside of the guide U-shaped frame is provided with a mounting groove, and the adjusting plate is slidably installed in the mounting groove.

[0009] Further, a guide wheel is rotatably installed on one side of the adjusting plate, and the guide wheel is rollingly connected to one side surface of the support column.

[0010] Further, a jacking screw rod is rotatably installed on one side of the adjusting plate, and the jacking screw rod is threadedly installed on one side of the guide U-shaped frame.

[0011] Further, the jacking hydraulic cylinder is located between the two support columns and symmetrically distributed at the bottom position of the box girder.

[0012] Further, the supporting plate is located at the lower surface position of the box girder and is located on one side of the support column.

[0013] Further, the guide U-shaped frame has two, and is respectively connected to the outer surfaces of the two support columns.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) This scheme can be placed flat through the supporting plate on the pier installs the positioning seat and the jacking hydraulic cylinder, is favorable to the installation of alignment, and through the supporting plate connecting the limiting plate, the connecting rod installs the guide U type frame, can be combined and connected to support, and can assist the guide, improve the safety stability of jacking, is favorable to the adjustment for use.

[0016] (2) Through the installation groove connecting the adjusting plate and the guide wheel, in combination with the jacking screw rod, the combination installation can be guided and supported, the accuracy and stability of jacking are improved, and the interference of misplacement is reduced.

[0017] (3) Through the symmetrical installation jacking hydraulic cylinder and guide U type frame, both sides can be jacked smoothly, the balance is improved, and the safety is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the whole structure three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the plane structure schematic diagram of the utility model;

[0020] Figure 3 It is the partial sectional view of the guide U type frame connection of the utility model;

[0021] Figure 4 It is the partial structure diagram of the guide wheel installation of the utility model;

[0022] Figure 5 It is the three-dimensional structure diagram of the guide U type frame of the utility model.

[0023] Explanation of reference numerals in the drawing:

[0024] 1 pier, 11 support, 12 box girder, 13 supporting plate, 14 positioning seat, 15 jacking hydraulic cylinder, 16 combined screw head, 17 combined screw barrel, 18 supporting plate, 19 limiting plate, 2 connecting rod, 21 guide U type frame, 22 installation groove, 23 adjusting plate, 24 guide wheel, 25 jacking screw rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model; Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0026] Please refer toFigure 1 、 Figure 2 and Figure 3 The utility model provides a kind of jacking support structure for urban viaduct extension, including pier 1, the upper surface of pier 1 is fixedly connected with support column 11, the upper surface of support column 11 is combined with box girder 12, the upper surface of pier 1 is positioned and placed with support plate 13, the upper surface of support plate 13 is fixedly installed with positioning seat 14, the upper surface of positioning seat 14 is fixedly connected with jacking hydraulic cylinder 15, the stem head of jacking hydraulic cylinder 15 is fixedly connected with combined screw head 16, one end of combined screw head 16 is threadedly installed with combined screw barrel 17, one end of combined screw barrel 17 is fixedly connected with supporting plate 18, one side of supporting plate 18 is tightly connected to the lower surface of box girder 12, the both ends of supporting plate 18 are fixedly connected with limiting plate 19, limiting plate 19 is clamped to the both end surfaces of box girder 12, the both ends of supporting plate 18 are fixedly connected with connecting rod 2, one end of connecting rod 2 is fixedly connected with guide U-shaped frame 21, the inner side surface of guide U-shaped frame 21 is slidably connected to one side of the outer surface of support column 11, when operating, support plate 13 can be placed on pier 1, and combined between two support columns 11, can be directly installed in position, then positioning seat 14 and jacking hydraulic cylinder 15 are positioned and connected, and combined screw head 16 can be connected into combined screw barrel 17, so that supporting plate 18 and jacking hydraulic cylinder 15 are combined and installed, supporting plate 18 can be tightly positioned to the bottom position of box girder 12, and the both ends are clamped and limited by limiting plate 17, to avoid misplacement deviation, while the guide U-shaped frame 21 on both sides is slidably installed to the surface of support column 11, can be assisted to guide, accurately and stably, then jacking hydraulic cylinder 15 is controlled to extend, can push supporting plate 18 to tightly box girder 12, can jacking support, facilitate extension construction, conducive to the construction of urban viaduct, safe and stable.

[0027] Please refer to Figure 4 and Figure 5 The inside one side of guide U-shaped frame 21 is equipped with mounting groove 22, adjusting plate 23 is slidably installed in mounting groove 22, guide wheel 24 is rotatably installed on one side of adjusting plate 23, guide wheel 24 is rotatably connected to one side surface of support column 11, jacking screw rod 25 is rotatably installed on one side of adjusting plate 23, jacking screw rod 25 is threadedly installed in one side position of guide U-shaped frame 21, adjusting plate and guide wheel are connected through mounting groove, and the jacking screw rod is combined to adjust, can be combined and installed to guide support, improve the accuracy and stability of jacking, reduce the interference of misplacement, when guide U-shaped frame 21 is guided and slid along the surface of support column 11, jacking screw rod 25 can be rotated, adjusting plate 23 can be pushed to move, so that guide wheel 24 can be tightly connected to the surface of support column 11, can be rotatably supported, improve the stability of guide support, facilitate adjustment and use, high adaptability.

[0028] Please refer to Figure 1 and Figure 2The jacking hydraulic cylinder 15 is located between the two supports 11 and is symmetrically distributed at the bottom position of the box girder 12, the supporting plate 18 is located at the lower surface position of the box girder 12 and is located on one side of the support 11, and the guide U-shaped frame 21 has two and is connected to the outer surfaces of the two supports 11 respectively.

[0029] The above merely describes a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improved conception of the present application, should be covered in the protection scope of the present application, if equivalent replacement or change is made within the technical range disclosed by the present application.

Claims

1. A jacking support structure for urban viaduct expansion, comprising a pier (1), the upper surface of the pier (1) is fixedly connected with a support column (11), the upper surface of the support column (11) is combinedly installed with a box girder (12), characterized in that: The upper surface of the pier (1) is positioned and placed with a supporting plate (13), the upper surface of the supporting plate (13) is fixedly installed with a positioning seat (14), the upper surface of the positioning seat (14) is fixedly connected with a jacking hydraulic cylinder (15), the rod head of the jacking hydraulic cylinder (15) is fixedly connected with a combined threaded head (16), one end of the combined threaded head (16) is threadedly installed with a combined threaded barrel (17), one end of the combined threaded barrel (17) is fixedly connected with a supporting plate (18), one side of the supporting plate (18) is tightly connected to the lower surface of the box girder (12), both ends of the supporting plate (18) are fixedly connected with limiting plates (19), the limiting plates (19) are clamped on both end surfaces of the box girder (12), both ends of the supporting plate (18) are fixedly connected with connecting rods (2), one end of the connecting rod (2) is fixedly connected with a guide U-shaped frame (21), the inner side surface of the guide U-shaped frame (21) is slidingly connected to one side of the outer surface of the support column (11).

2. The jacking support structure for extension of an urban viaduct according to claim 1, characterized in that: The inside of the guide U-shaped frame (21) is provided with a mounting groove (22), and the inside of the mounting groove (22) is slidingly installed with an adjusting plate (23).

3. The jacking support structure for extension of an urban viaduct according to claim 2, characterized in that: The side of the adjusting plate (23) is rotatably installed with a guide wheel (24), and the guide wheel (24) is rollingly connected to one side surface of the support column (11).

4. The jacking support structure for extension of an urban viaduct according to claim 2, characterized in that: The side of the adjusting plate (23) is rotatably installed with a clamping threaded rod (25), and the clamping threaded rod (25) is threadedly installed on one side of the guide U-shaped frame (21).

5. The jacking support structure for extension of an urban viaduct according to claim 1, characterized in that: The jacking hydraulic cylinder (15) is located between the two support columns (11) and is symmetrically distributed at the bottom position of the box girder (12).

6. The jacking support structure for extension of an urban viaduct according to claim 1, characterized in that: The supporting plate (18) is located at the lower surface position of the box girder (12) and is located on one side of the support column (11).

7. The jacking support structure for extension of an urban viaduct according to claim 1, characterized in that: The guide U-shaped frame (21) has two and is connected to the outer surfaces of the two support columns (11). The jacking hydraulic cylinder (15) is located between the two support columns (11) and is symmetrically distributed at the bottom position of the box girder (12). The supporting plate (18) is located at the lower surface position of the box girder (12) and is located on one side of the support column (11). The guide U-shaped frame (21) has two and is connected to the outer surfaces of the two support columns (11).

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