Quick-change support free of synchronous jacking replacement and replacement method

Abstract

The quick-change support free of synchronous jacking replacement comprises the following steps that S1, a temporary support is installed on the side face of the support, and the temporary support is tightly attached to an upper structure and a lower structure and bears the upper structure and the lower structure; s2, the height of the support is increased to a design value, and the temporary support is unloaded; s3, the height of the temporary support is increased until the temporary support is borne again; s4, lowering the height of the support until the support is completely unloaded; s5, an old support is taken out, and a new support is installed; s6, the height of the new support is adjusted until the temporary support is unloaded, and the temporary support is moved out; and S7, after the temporary support is moved out, the height of the support is adjusted to the height before replacement, and replacement is completed. According to the method, the whole beam or one end of the beam does not need to be jacked synchronously, only the to-be-replaced support is jacked at a single point, the jacking amount is small, needed equipment and manpower are few, and time and labor are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of building structure engineering, and in particular to a quick-change support and a replacement method thereof that does not require synchronous jacking and replacement. Background Art

[0002] Bridge bearings are the primary load-transmitting components between the superstructure and substructure of a bridge. Changes in bearing forces can largely reflect the overall operation of the bridge. Acquiring vertical reaction force monitoring data on bridge bearings, and therefore bridges, provides a technical basis for bridge health monitoring. With the increasing construction of highway and railway bridges in my country, monitoring the vertical static and dynamic loads on bridge bearings has become increasingly important for bridge operation.

[0003] After a long period of service, the bearings need to be replaced regularly. Currently, when replacing traditional bearings, the entire beam or one end of the beam needs to be simultaneously jacked up to a certain height, and the bearings can be replaced after being unloaded. The construction requirements for synchronously jacking up the beam body are high, and a lot of equipment and manpower are needed, which is time-consuming and labor-intensive. Summary of the Invention

[0004] The purpose of the present invention is to provide a quick-change support and replacement method that does not require synchronous jacking and replacement. There is no need to synchronously jack up the entire beam or one end of the beam. Only the support to be replaced needs to be jacked up at a single point. The jacking amount is small, and less equipment and manpower are required, saving time and effort.

[0005] In order to solve the above technical problems, the present invention adopts the following solutions: A method for replacing a quick-change support without synchronous jacking, comprising the following steps: S1: Install temporary supports on the side of the support, which are in close contact with the upper and lower structures and bear the load; S2: Raise the support height to the design value and temporarily support unloading; S3: Raise the temporary support height until the temporary support can bear the load again; S4: Lower the support height until the support is completely unloaded; S5: Remove the old support and install the new support; S6: Adjust the height of the new support until the temporary support is unloaded and remove the temporary support; S7: After removing the temporary support, adjust the support height to the height before replacement to complete the replacement.

[0006] In this solution, when a support needs to be replaced, a temporary support is first installed on the side of the support. The upper end of the temporary support is in close contact with the bottom surface of the upper structure, and the lower end is in close contact with the top surface of the lower structure, so that the temporary support bears a certain load. Then the height of the support is raised to the design value to unload the temporary support. At this time, the support is fully loaded. Then the height of the temporary support is raised again to allow it to bear the load again. Then the height of the support is lowered to allow the temporary support to fully feel the load of the upper structure. At this time, the old support can be removed and a new support can be installed. Then the height of the new support is raised again until the temporary support is unloaded. The temporary support is removed and the height of the new support is adjusted to the height before the old support was replaced to complete the replacement of the support. The entire replacement process does not require the entire beam or one end of the beam to be lifted to a certain height. With the cooperation of the temporary support, the support can be replaced by lifting the support at a single point at the position where the support is to be replaced by a small amount. The construction requirements are low, less equipment is required for lifting, and less manpower and time are spent, saving time and effort.

[0007] Optionally, in S2, liquid is injected into the support through a through hole on the bottom plate below the support to adjust the support height to a designed value.

[0008] Optionally, in S3, the temporary support is height-adjusted by padding steel plates or injecting liquid or wedge blocks.

[0009] Optionally, in S4, the height of the support is lowered by removing the liquid until the support does not bear any upper structure load at all.

[0010] A quick-change support includes a support, which includes a core, a top plate and a bottom plate. The core is arranged between the top plate and the bottom plate, the top plate is located above the bottom plate, the top plate is connected to the upper structure, and the bottom plate is connected to the lower structure. The bottom plate has a pelvic cavity adapted to the lower end of the core, the lower end of the core is located in the pelvic cavity, a sealed cavity is formed between the core and the bottom wall of the pelvic cavity, and a through hole connected to the sealed cavity is opened on the side of the bottom plate.

[0011] Optionally, a bolt plug is provided at the entrance of the through hole.

[0012] Optionally, a groove is embedded in the circumferential direction of the lower end of the core body, a sealing ring is embedded in the groove, and the sealing ring is pressed tightly between the side wall of the pelvic cavity and the side wall of the core body.

[0013] Optionally, a circle of baffles is provided on the bottom plate, and a pelvic cavity is formed between the baffles and the bottom plate.

[0014] Optionally, the core is any one of a spherical steel bearing, a pot bearing, a rubber bearing, and a friction pendulum bearing.

[0015] The present invention has the beneficial effects: Compared with the existing technology, when replacing traditional supports, it is necessary to synchronously lift the entire beam or one end of the beam to a certain height, and then replace the support after the support is completely unloaded. The construction requirements of synchronously lifting the beam body are high, and more equipment and manpower are needed. In the present invention, when the support needs to be replaced, a temporary support is first installed on the side of the support, allowing the temporary support to bear a certain load, and then the height of the support is raised to the design value so that the temporary support is unloaded. At this time, the support is fully loaded, and then the height of the temporary support is raised again to allow it to be loaded again. Then, the height of the support is lowered to allow the temporary support to fully feel the upper structure load. At this time, the old support can be taken out and a new support can be installed. Then, the height of the new support is raised again until the temporary support is unloaded, the temporary support is removed, and the height of the new support is adjusted to the height before the old support is replaced to complete the replacement of the support. The entire replacement process does not require lifting the entire beam or one end of the beam to a certain height. With the cooperation of temporary support, it is only necessary to lift the support at a single point at the position where the support is to be replaced by a small height to achieve the replacement of the support. The construction requirements are low, so less equipment is required for jacking, and less manpower and time are spent, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the process of the present invention; Figure 2 is a structural diagram of the support; Figure 3 Schematic diagram of the structure after temporary support is installed.

[0017] Figure numerals: 1-core, 2-top plate, 3-bottom plate, 4-sealed cavity, 5-through hole, 6-bolt plug, 7-basin cavity, 8-sealing ring, 9-temporary support. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0019] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "having," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts. Example

[0021] A method for replacing a quick-change support without synchronous jacking, comprising the following steps: S1: Install temporary supports 9 on the side of the support. The temporary supports 9 are in close contact with the upper and lower structures and bear the load. S2: Raise the support height to the design value and unload the temporary support 9; S3: Raise the height of the temporary support 9 until the temporary support 9 bears the load again; S4: Lower the support height until the support is completely unloaded; S5: Remove the old support and install the new support; S6: Adjust the height of the new support until the temporary support 9 is unloaded, and remove the temporary support 9; S7: After removing the temporary support 9, adjust the support height to the height before replacement to complete the replacement.

[0022] In this embodiment, Figure 1 When the support needs to be replaced, as shown in Figure 3 As shown, first install a temporary support 9 on the side of the support, with the upper end of the temporary support 9 in close contact with the bottom surface of the superstructure and the lower end in close contact with the top surface of the substructure, so that the temporary support 9 can bear a certain load. Then, the height of the support is raised to the design value, so that the temporary support 9 is unloaded. At this time, the support is fully loaded. Then, the height of the temporary support 9 is raised again to allow it to bear the load again. Then, the height of the support is lowered to allow the temporary support 9 to fully feel the load of the superstructure. At this time, the old support can be removed and the new support can be installed. Then, the height of the new support is raised again until the temporary support 9 is unloaded. The temporary support 9 is removed and the height of the new support is adjusted to the height before the old support is replaced. The replacement of the support is completed. The entire replacement process does not require the entire beam or one end of the beam to be lifted to a certain height. With the cooperation of the temporary support 9, it is only necessary to lift the support a small amount at a single point at the position where the support is to be replaced. The construction requirements are relatively low, less equipment is required for lifting, and less manpower and time are spent, saving time and effort.

[0023] Furthermore, in S2, liquid is injected into the support through the through hole 5 on the bottom plate 3 below the support to adjust the support height to the designed value.

[0024] Specific method for adjusting the height of the support: a through hole 5 is provided on the side of the base plate 3, and liquid is injected between the support and the base plate 3 through the through hole 5. The liquid uses hydraulic oil. Under the action of the hydraulic oil, the support is lifted to change its height so that the height of the support reaches the design value. The design value is generally less than 2mm. The traditional method of lifting the entire beam or one end of the beam requires lifting the beam body by 5-10mm.

[0025] Furthermore, in S3, the temporary support 9 is height-adjusted by padding with steel plates or injecting liquid or wedge blocks.

[0026] Specifically, the temporary support 9 can use a jack, combined with a steel plate to change the height of the temporary support 9, or adopt a method similar to the support structure to achieve height adjustment by injecting liquid, or adopt the existing wedge-shaped height adjustment structure to adjust its own height.

[0027] Furthermore, in S4, the height of the support is lowered by removing the liquid until the support does not bear any upper structure load at all.

[0028] A quick-change support includes a support, which includes a core body 1, a top plate 2 and a bottom plate 3. The core body 1 is arranged between the top plate 2 and the bottom plate 3, the top plate 2 is located above the bottom plate 3, the top plate 2 is connected to the upper structure, and the bottom plate 3 is connected to the lower structure. The bottom plate 3 has a pelvic cavity 7 adapted to the lower end of the core body 1, the lower end of the core body 1 is located in the pelvic cavity 7, and a sealed cavity 4 is formed between the core body 1 and the bottom wall of the pelvic cavity 7. A through hole 5 connected to the sealed cavity 4 is opened on the side of the bottom plate 3.

[0029] Specifically, such as Figure 2 As shown, the support mainly includes a core 1, a top plate 2 and a bottom plate 3. The top plate 2 is connected to the upper structure, which is a beam body. The bottom plate 3 is connected to the lower structure, which is a pier column. The core 1 is arranged between the top plate 2 and the bottom plate 3. The top surface of the bottom plate 3 is provided with a basin cavity 7. The lower end of the core 1 is located in the basin cavity 7. The core 1 can move up and down in the basin cavity 7. The bottom surface of the core 1 and the bottom surface of the basin cavity 7 form a sealed cavity 4. A through hole 5 connected to the sealed cavity 4 is opened on the side of the bottom plate 3. Liquid is injected into the sealed cavity 4 through the through hole 5. Under the action of hydraulic pressure, the core 1 can be lifted upward to increase the height of the support. Removing the liquid can reduce the height of the support.

[0030] Furthermore, a bolt plug 6 is provided at the entrance of the through hole 5 .

[0031] Specifically, the bolt plug 6 is used to seal the inlet end of the through hole 5. The bolt plug 6 is threadedly connected to the through hole 5. When there is no need to adjust the height, the bolt plug 6 seals the inlet to prevent impurities from entering. When liquid needs to be injected, the bolt plug 6 can be unscrewed to start injecting the liquid.

[0032] Furthermore, a groove is embedded in the circumferential direction of the lower end of the core body 1 , and a sealing ring 8 is embedded in the groove. The sealing ring 8 is pressed tightly between the side wall of the pelvic cavity 7 and the side wall of the core body 1 .

[0033] Specifically, a groove is opened circumferentially at the lower end of the core body 1, and a sealing ring 8 is embedded in the groove. The sealing ring 8 is pressed between the side wall of the pelvic cavity 7 and the side wall of the core body 1. The sealing ring 8 can prevent the liquid in the sealing cavity 4 from flowing out from the installation gap.

[0034] Furthermore, a circle of baffles is provided on the bottom plate 3 , and a basin cavity 7 is formed between the baffles and the bottom plate 3 .

[0035] Specifically, the baffle and the bottom plate 3 can be connected by welding or integrally forming.

[0036] Furthermore, the core 1 is any one of a spherical steel bearing, a pot bearing, a rubber bearing, and a friction pendulum bearing.

[0037] The replacement method of the support is as follows: temporary supports 9 are arranged on both sides of the support to be replaced, and the upper and lower ends of the temporary supports 9 are respectively in close contact with the upper structure and the lower structure, so that the temporary supports 9 bear a certain load, and then the bolt plug 6 is unscrewed, and hydraulic oil is injected into the through hole 5 through the pump. The hydraulic oil enters the sealing cavity 4 through the through hole 5. As the hydraulic oil in the sealing cavity 4 continues to increase, the oil pressure increases, and the oil pressure pushes the core body 1 upward, so that the height of the support rises to the design value, so that the temporary support 9 is unloaded, and then the height of the temporary support 9 is adjusted to make the temporary support 9 in close contact with the upper structure and the lower structure and bear the load again. , then unload the hydraulic oil and reduce the oil pressure in the sealing chamber 4. Under the action of the upper structure load, the core 1 drops in height until the support is completely unloaded, the connection between the support and the structural member is removed, the old support is taken out, and then a new support is installed. The structure of the new support is the same as that of the old support. Hydraulic oil is injected through the through hole 5 on the new support to raise the height of the support to the temporary support 9 for unloading. The temporary support 9 is lowered and taken out, and the hydraulic oil in the sealing chamber 4 is gradually unloaded. The height of the support is lowered to the position before the old support is replaced (the position when the old support height is not adjusted), and the replacement of the support is completed.

[0038] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A quick-change support replacement method without synchronous jacking, characterized in that: The following steps are involved: S1: Install a temporary support (9) on the side of the support, and the temporary support (9) is in close contact with the upper and lower structures and bears the load; S2: Raise the support height to the design value and unload the temporary support (9); S3: Raise the height of the temporary support (9) until the temporary support (9) can bear the load again; S4: Lower the support height until the support is completely unloaded; S5: Remove the old support and install the new support; S6: Adjust the height of the new support until the temporary support (9) is unloaded, and remove the temporary support (9); S7: After removing the temporary support (9), adjust the support height to the height before replacement to complete the replacement.

2. A quick-change support replacement method without synchronous jacking according to claim 1, characterized in that: In S2, liquid is injected into the support through the through hole (5) on the bottom plate (3) below the support to adjust the support height to the designed value.

3. The method for replacing a quick-change support without synchronous lifting according to claim 1, characterized in that: In S3, the temporary support (9) is height-adjusted by padding steel plates or injecting liquid or wedge blocks.

4. The method for replacing a quick-change support without synchronous lifting according to claim 1, characterized in that: In S4, the height of the support is lowered by removing the liquid until it is no longer subject to the superstructure load.

5. A quick-change support for implementing the quick-change support replacement method according to any one of claims 1 to 4, characterized in that: The invention comprises a support, which comprises a core (1), a top plate (2) and a bottom plate (3); the core (1) is arranged between the top plate (2) and the bottom plate (3); the top plate (2) is located above the bottom plate (3); the top plate (2) is connected to the upper structure; the bottom plate (3) is connected to the lower structure; the bottom plate (3) has a pelvic cavity (7) adapted to the lower end of the core (1); the lower end of the core (1) is located in the pelvic cavity (7); a sealed cavity (4) is formed between the core (1) and the bottom wall of the pelvic cavity (7); and a through hole (5) connected to the sealed cavity (4) is opened on the side of the bottom plate (3).

6. The quick-change support according to claim 5, characterized in that: A bolt plug (6) is provided at the entrance of the through hole (5).

7. The quick-change support according to claim 5, characterized in that: A groove is embedded in the circumferential direction of the lower end of the core body (1), and a sealing ring (8) is embedded in the groove. The sealing ring (8) is pressed tightly between the side wall of the pelvic cavity (7) and the side wall of the core body (1).

8. The quick-change support according to claim 5, characterized in that: A circle of baffles is provided on the bottom plate (3), and a pelvic cavity (7) is formed between the baffles and the bottom plate (3).

9. A quick-change bracket according to any one of claims 1 or 5, characterized in that: The core (1) is any one of a spherical steel bearing, a pot-type bearing, a rubber bearing, and a friction pendulum bearing.

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