A pre-pressing device for bridge supports

Abstract

The application discloses a pre-pressing device for bridge support and belongs to the technical field of bridge support.The pre-pressing device for bridge support comprises a base and a bridge support, the bridge support is installed on the surface of the base, the bridge support comprises stand columns, longitudinal beams and cross beams, the stand columns are symmetrically fixedly installed on the surface of the base, longitudinal beams are installed between adjacent stand columns, cross beams are installed between adjacent longitudinal beams, a pre-pressing mechanism is installed on the surface of the base, the pre-pressing mechanism comprises a pre-pressing plate, a limiting plate and a jack, and the pre-pressing plate is horizontally arranged on the surface of the cross beam.The pre-pressing mechanism is arranged, the pre-pressing plate can be jacked up through the jack, the pre-pressing plate is pressed through steel wires, the pressure is applied to the surface of the cross beam, the pre-pressing of the bridge support is realized, when the pre-pressing plate is jacked up through the jack, the supporting plate is synchronously driven to ascend through the steel wires, the end portion of the pre-pressing plate is supported through the supporting rod, the pressure is prevented from being concentrated on the end portion of the pre-pressing plate, and the uniform distribution of the pressure is realized.

Description

Technical Field

[0001] This invention relates to the field of bridge support technology, and in particular to a preloading device for bridge supports. Background Technology

[0002] With the continuous development of modern transportation facilities, bridges, as one of the key transportation infrastructures, face increasingly higher requirements in design, construction, and maintenance. Bridge supports, as an important component of the bridge structure, not only bear the weight of the bridge structure but also play a crucial role in load transfer and structural stability. During bridge construction, the installation and commissioning of supports is a complex and critical step, especially in terms of load-bearing capacity and deformation control. To ensure the stability and service life of the bridge structure, the use of support preloading devices has become increasingly important. By uniformly applying preload, preloading devices help eliminate initial loosening of the support system, increase the stability of the supports under working conditions, and allow the supports to adapt to load conditions in advance, thereby reducing maintenance costs caused by uneven settlement or deformation later on.

[0003] Existing bridge support preloading devices typically preload the supports by hoisting sandbags or setting up water bags, which is cumbersome to construct. Furthermore, after preloading, it is inconvenient to disassemble and store the sandbags or water bags, making them unusable. Summary of the Invention

[0004] The purpose of this invention is to provide a preloading device for bridge supports to solve the problems existing in the prior art.

[0005] The objective of this invention is achieved through the following technical solution: A preloading device for bridge supports includes a base and a bridge support. The bridge support is mounted on the surface of the base. The bridge support includes columns, longitudinal beams, and transverse beams. The columns are symmetrically fixedly mounted on the surface of the base. Longitudinal beams are installed between adjacent columns, and transverse beams are installed between adjacent longitudinal beams. A preloading mechanism is mounted on the surface of the base for preloading the bridge support. The preloading mechanism includes: A preload plate, which spans across the surface of the beam, is used to apply pressure to the beam; A limiting plate is symmetrically and fixedly installed at the bottom of the preload plate. The limiting plate is sleeved on the surface of the crossbeam and is used to limit the position of the preload plate. The jacks are symmetrically and fixedly installed on the surface of the preload plate.

[0006] Preferably, a horizontal tie rod is connected between adjacent columns to distribute pressure.

[0007] Preferably, a T-shaped steel is fixedly installed on the surface of the crossbeam, and the telescopic end of the jack contacts the surface of the T-shaped steel to increase the force-bearing area.

[0008] Preferably, the preload plate is rotatably mounted with first pulleys at both ends, and the base surface is symmetrically embedded with connecting seats.

[0009] Preferably, a second pulley is rotatably installed at the bottom of the longitudinal beam, a support ring is slidably sleeved on the surface of the column, a support plate is fixedly installed between adjacent support rings, and pull rings are symmetrically fixedly installed on the surface of the support plate.

[0010] Preferably, a steel wire rope is connected between the connecting seat, the first pulley, the second pulley and the pull ring. One end of the steel wire rope is fixedly connected to the connecting seat, and the other end of the steel wire rope passes around the first pulley and the second pulley in sequence before being fixedly connected to the pull ring.

[0011] Preferably, a hinge support is fixedly installed on the side wall of the support plate, and a support rod is rotatably installed in the inner cavity of the hinge support for supporting the end of the preload plate.

[0012] Preferably, a sliding rod is symmetrically fixedly installed at one end of the support rod, and a sliding groove is opened in the inner cavity of the preload plate, and the sliding rod is slidably connected to the sliding groove.

[0013] The beneficial effects of this invention are: 1) By setting up a pre-compression mechanism, the pre-compression plate can be lifted by jacks and pressure can be applied to the pre-compression plate by wire ropes. The pressure is applied to the surface of the crossbeam to achieve pre-compression of the bridge support. When the jacks lift the pre-compression plate, the support plate is simultaneously driven to rise by the wire ropes and the end of the pre-compression plate is supported by the support rods to avoid the pressure being concentrated at the end of the pre-compression plate and to achieve uniform pressure distribution.

[0014] 2) By setting horizontal tie rods, longitudinal beams and transverse beams between adjacent columns, the pressure on the surface of each column can be evenly distributed, improving the preloading effect. T-shaped steel can increase the bearing area of ​​the jack, so that the pressure is evenly distributed on the surface of the transverse beam. Attached Figure Description

[0015] Figure 1 A frontal perspective view provided for an embodiment of the present invention; Figure 2 A side view provided for an embodiment of the present invention; Figure 3 A front view provided for an embodiment of the present invention; Figure 4 This is a partial structural schematic diagram provided for an embodiment of the present invention.

[0016] In the diagram, 1 is the base; 2 is the bridge support; 201 is the column; 202 is the tie rod; 203 is the longitudinal beam; 204 is the crossbeam; 205 is the T-shaped steel; 3 is the preloading mechanism; 301 is the preloading plate; 302 is the limiting plate; 303 is the jack; 304 is the first pulley; 305 is the connecting seat; 306 is the second pulley; 307 is the support ring; 308 is the support plate; 309 is the pull ring; 310 is the wire rope; 311 is the hinge support; 312 is the support rod; 313 is the sliding rod; and 314 is the sliding groove. Detailed Implementation

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] See Figures 1-4 The present invention provides a technical solution: like Figures 1-4 As shown, a preloading device for bridge supports includes a base 1 and a bridge support 2. The bridge support 2 is installed on the surface of the base 1. The bridge support 2 includes columns 201, longitudinal beams 203 and transverse beams 204. The columns 201 are symmetrically fixedly installed on the surface of the base 1. A horizontal tie rod 202 is connected between adjacent columns 201 to distribute pressure. A longitudinal beam 203 is installed between adjacent columns 201. A transverse beam 204 is installed between adjacent longitudinal beams 203. A T-shaped steel 205 is fixedly installed on the surface of the transverse beam 204. The telescopic end of the jack 303 contacts the surface of the T-shaped steel 205 to increase the bearing area.

[0019] Through the above technical solution, by setting horizontal tie rods 202, longitudinal beams 203 and crossbeams 204 between adjacent columns 201, the pressure on the surface of each column 201 can be evenly distributed, improving the pre-compression effect. The T-shaped steel 205 can increase the bearing area of ​​the jack 303, so that the pressure is evenly distributed on the surface of the crossbeam 204.

[0020] like Figures 1-4 As shown, a pre-compression mechanism 3 is further installed on the surface of the base 1 for pre-compressing the bridge support 2. The pre-compression mechanism 3 includes a pre-compression plate 301, a limiting plate 302, and a jack 303. The pre-compression plate 301 spans across the surface of the crossbeam 204 and is used to apply pressure to the crossbeam 204. The limiting plate 302 is symmetrically fixedly installed at the bottom of the pre-compression plate 301 and is sleeved on the surface of the crossbeam 204 for limiting the pre-compression plate 301. The jack 303 is symmetrically fixedly installed on the surface of the pre-compression plate 301 and is used to apply pressure to the crossbeam 204.

[0021] like Figures 1-4 As shown, further, first pulleys 304 are rotatably installed at both ends of the preload plate 301, connecting seats 305 are symmetrically embedded on the surface of the base 1, second pulleys 306 are rotatably installed at the bottom of the longitudinal beam 203, support rings 307 are slidably sleeved on the surface of the column 201, support plates 308 are fixedly installed between adjacent support rings 307, pull rings 309 are symmetrically fixedly installed on the surface of the support plates 308, and steel wire ropes 310 are connected between the connecting seats 305, the first pulleys 304, the second pulleys 306 and the pull rings 309. One end of the wire rope 310 is fixedly connected to the connecting seat 305, and the other end of the wire rope 310 passes through the first pulley 304 and the second pulley 306 in sequence before being fixedly connected to the pull ring 309. During installation, the preload plate 301 is installed on the surface of the crossbeam 204, and the limiting plate 302 is snapped onto the surface of the crossbeam 204. The preload plate 301 can be lifted by the jack 303, and pressure is applied to the preload plate 301 by the wire rope 310, and the pressure is applied to the surface of the crossbeam 204 to achieve preload on the bridge support 2.

[0022] like Figures 1-4 As shown, a hinge support 311 is fixedly installed on the side wall of the support plate 308. A support rod 312 is rotatably installed in the inner cavity of the hinge support 311 to support the end of the preload plate 301. A sliding rod 313 is symmetrically fixedly installed on one end of the support rod 312. A sliding groove 314 is opened in the inner cavity of the preload plate 301. The sliding rod 313 is slidably connected to the sliding groove 314. When the jack 303 lifts the preload plate 301, the support plate 308 is driven to rise synchronously through the wire rope 310, and the end of the preload plate 301 is supported by the support rod 312 to avoid pressure concentration at the end of the preload plate 301 and achieve uniform pressure distribution.

[0023] With the above technical solution, during installation, the preload plate 301 is installed on the surface of the crossbeam 204, and the limiting plate 302 is snapped onto the surface of the crossbeam 204. The preload plate 301 can be lifted by the jack 303, and pressure is applied to the preload plate 301 by the wire rope 310, and the pressure is applied to the surface of the crossbeam 204 to achieve preload on the bridge support 2. When the jack 303 lifts the preload plate 301, the support plate 308 is simultaneously driven to rise by the wire rope 310, and the end of the preload plate 301 is supported by the support rod 312 to avoid pressure concentration at the end of the preload plate 301 and achieve uniform pressure distribution.

[0024] Preferably, during use, the preload plate 301 is installed on the surface of the crossbeam 204, and the limiting plate 302 is snapped onto the surface of the crossbeam 204. The preload plate 301 can be lifted by the jack 303, and pressure is applied to the preload plate 301 by the wire rope 310, and the pressure is applied to the surface of the crossbeam 204 to achieve preload on the bridge support 2. When the jack 303 lifts the preload plate 301, the support plate 308 is simultaneously driven to rise by the wire rope 310, and the end of the preload plate 301 is supported by the support rod 312 to avoid pressure concentration at the end of the preload plate 301 and to achieve uniform pressure distribution.

[0025] Preferably, by setting horizontal tie rods 202, longitudinal beams 203 and crossbeams 204 between adjacent columns 201, the pressure on the surface of each column 201 can be evenly distributed, improving the preloading effect. The T-shaped steel 205 can increase the bearing area of ​​the jack 303, so that the pressure is evenly distributed on the surface of the crossbeam 204.

[0026] The above are merely preferred embodiments of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be modified within the scope of the present concept through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A preloading device for a bridge support, comprising a base (1) and a bridge support (2), the bridge support (2) being mounted on the surface of the base (1), the bridge support (2) comprising columns (201), longitudinal beams (203) and transverse beams (204), the columns (201) being symmetrically fixedly mounted on the surface of the base (1), longitudinal beams (203) being installed between adjacent columns (201), and transverse beams (204) being installed between adjacent longitudinal beams (203), characterized in that, A preloading mechanism (3) is installed on the surface of the base (1) for preloading the bridge support (2). The preloading mechanism (3) includes: A preload plate (301) spans across the surface of the crossbeam (204) and is used to apply pressure to the crossbeam (204); A limiting plate (302) is symmetrically fixedly installed at the bottom of the preload plate (301). The limiting plate (302) is sleeved on the surface of the crossbeam (204) and is used to limit the preload plate (301). Jacks (303) are symmetrically fixed on the surface of the preload plate (301).

2. The preloading device for bridge supports according to claim 1, characterized in that: A horizontal tie rod (202) is connected between adjacent columns (201) to distribute pressure.

3. A preloading device for bridge supports according to claim 1, characterized in that: A T-shaped steel (205) is fixedly installed on the surface of the crossbeam (204), and the telescopic end of the jack (303) contacts the surface of the T-shaped steel (205) to increase the force-bearing area.

4. A preloading device for bridge supports according to claim 1, characterized in that: The preload plate (301) has first pulleys (304) rotatably installed at both ends, and connecting seats (305) are symmetrically embedded on the surface of the base (1).

5. A preloading device for bridge supports according to claim 4, characterized in that: The bottom of the longitudinal beam (203) is rotatably mounted with a second pulley (306), the surface of the column (201) is slidably fitted with a support ring (307), a support plate (308) is fixedly installed between adjacent support rings (307), and pull rings (309) are symmetrically fixedly installed on the surface of the support plate (308).

6. A preloading device for bridge supports according to claim 5, characterized in that: A steel wire rope (310) is connected between the connecting seat (305), the first pulley (304), the second pulley (306) and the pull ring (309). One end of the steel wire rope (310) is fixedly connected to the connecting seat (305), and the other end of the steel wire rope (310) passes through the first pulley (304) and the second pulley (306) in sequence before being fixedly connected to the pull ring (309).

7. A preloading device for bridge supports according to claim 5, characterized in that: A hinge support (311) is fixedly installed on the side wall of the support plate (308), and a support rod (312) is rotatably installed in the inner cavity of the hinge support (311) for supporting the end of the preload plate (301).

8. A preloading device for bridge supports according to claim 7, characterized in that: One end of the support rod (312) is symmetrically fixed with a sliding rod (313), and the inner cavity of the pre-pressure plate (301) is provided with a sliding groove (314), and the sliding rod (313) is slidably connected to the sliding groove (314).

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