Bridge synchronous jacking construction device and method

Abstract

The invention relates to the technical field of bridge engineering, and discloses a bridge synchronous jacking construction device and method.The bridge synchronous jacking construction device comprises a pair of supporting columns, supporting plates are arranged on the tops of the supporting columns, one-way limiting mechanisms are arranged between the supporting plates and the supporting columns, and the one-way limiting mechanisms can limit the plane positions of the supporting plates step by step in the height direction; the push-pull mechanism is arranged between the two adjacent supporting plates, and the push-pull mechanism can enable the two supporting plates to relatively move in the height direction; the jacking oil cylinder is arranged on any supporting plate and used for abutting against the bridge body; according to the bridge body jacking device, the height of the bridge body can be continuously and rapidly adjusted, the jacking time of the bridge body is shortened, and the construction efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge engineering, in particular to a bridge synchronous jacking construction device and method. BACKGROUND

[0002] With the deepening of urbanization process in China, in order to meet the growing traffic demand, elevated bridge construction has been spread in various important joints. With the rapid economic development, the situation of traffic improvement combined with the characteristics of the region often occurs. In recent years, some of the built bridges, due to the increasing requirements of bridge traffic and navigation, the demand for bridge scale extension, etc., need to be lifted and reconstructed to improve the bridge clearance and adjust the bridge line type.

[0003] The jacking device is generally used in cooperation with multiple sets of jacks to support the bridge, thereby ensuring the stability of the bridge during support.

[0004] However, the existing jacking device needs to adjust the height of the pier after jacking to a certain distance, so as to perform the next jacking operation, which consumes a lot of time and affects the construction efficiency. SUMMARY

[0005] The present application relates to the technical field of bridge engineering, in particular to a bridge synchronous jacking construction device and method.

[0006] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a bridge synchronous jacking construction device, comprising:

[0007] A pair of support columns, the top of each support column is provided with a support plate, a one-way limiting mechanism is arranged between the support plate and the support column, and the one-way limiting mechanism can limit the plane position of the support plate step by step along the height direction;

[0008] A push-pull mechanism is arranged between two adjacent support plates, and the push-pull mechanism can make the two support plates move relatively along the height direction;

[0009] A jacking oil cylinder is arranged on any one of the support plates, and the jacking oil cylinder is used to abut against the bridge body;

[0010] A jacking oil cylinder is arranged on any one of the support plates, and the jacking oil cylinder is used to abut against the bridge body;

[0011] Optionally, the one-way limiting mechanism comprises:

[0012] A pair of ratchet grooves are opened on the side wall of the support column along the height direction;

[0013] A pair of ratchet blocks are respectively used for engaging with a pair of the ratchet grooves, the ratchet blocks are fixedly connected with connecting rods, and the connecting rods are slidingly connected with the support plates;

[0014] A pair of side plates are respectively fixedly connected with a pair of the ratchet blocks, and an elastic mechanism is arranged between the pair of side plates.

[0015] Optionally, the elastic mechanism comprises:

[0016] A plurality of springs are fixedly connected between the pair of side plates.

[0017] A plurality of guide columns are slidingly penetrated between the pair of side plates.

[0018] Optionally, a limiting sliding block is fixedly connected on the connecting rod, and a limiting sliding groove is formed on the support plate and slidingly matched with the limiting sliding block.

[0019] Optionally, a first connecting plate is fixedly connected between the plurality of guide columns, a release oil cylinder is fixedly installed on the first connecting plate, an output end of the release oil cylinder is fixedly connected with a driving wedge, the driving wedge is matched with a pair of driven wedges through inclined surfaces, and the pair of driven wedges are respectively fixedly connected with the pair of side plates.

[0020] Optionally, the push-pull mechanism comprises:

[0021] A second connecting plate;

[0022] A pair of push-pull oil cylinders are respectively fixedly connected between the second connecting plate and the pair of support plates. Optionally, a base is arranged at the bottom of the support column, and a plurality of damping rods are fixedly connected between the base and the support plate.

[0023] Optionally, contact surface plates are arranged on the end surfaces of the output end of the jacking oil cylinder and the support column abutting against the bridge body.

[0024] Optionally, anti-skid lines are arranged on the abutting end surfaces of the contact surface plates and the bridge body.

[0025] The application further provides a bridge synchronous jacking construction method, comprising the following steps:

[0026] The jacking oil cylinder and the support column are respectively abutted against the bridge body;

[0027] The jacking oil cylinder is started to jacking the bridge body;

[0028] The support plate with the support column is pushed upward by the push-pull mechanism, so that the support column abuts against the bridge body, and the planar position of the support plate is limited by the one-way limiting mechanism.

[0029] Pull the support plate with the jacking oil cylinder upward through the push-pull mechanism, so that the plane positions of the two support plates remain consistent, while the output end of the jacking oil cylinder is retracted, and the plane position of the support plate is limited by the one-way limiting mechanism;

[0030] Start the jacking oil cylinder to jacking the bridge body again, and repeat the above steps multiple times until the preset jacking height is reached.

[0031] The present application discloses the following technical effects: by setting a one-way limiting mechanism between the support column and the support plate, and a push-pull mechanism between the two support plates, starting the jacking oil cylinder to jacking the bridge body, adjusting the plane positions of the two support plates through the push-pull mechanism, and limiting the plane positions of the support plates by the one-way limiting mechanism, repeating multiple times can realize continuous and rapid adjustment of the height of the bridge body, shorten the jacking time of the bridge body, and effectively improve the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings are provided to explain the present application and should not be considered as an improper limitation on the present application. In the drawings:

[0033] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0034] Figure 2 It is a schematic diagram of the one-way limiting mechanism structure of the present application;

[0035] Figure 3 It is a schematic diagram of the ratchet groove and ratchet block structure of the present application;

[0036] Figure 4 It is a schematic diagram of the push-pull mechanism structure of the present application;

[0037] Figure 5 It is a schematic diagram of the limiting slide block and limiting slide slot structure of the present application.

[0038] In the drawings: 1, support column; 2, support plate; 3, jacking oil cylinder; 4, jacking column; 5, ratchet groove; 6, ratchet block; 7, connecting rod; 8, side plate; 9, spring; 10, guide column; 11, limiting slide block; 12, limiting slide slot; 13, first connecting plate; 14, release oil cylinder; 15, driving wedge; 16, driven wedge; 17, second connecting plate; 18, push-pull oil cylinder; 19, base; 20, damping rod; 21, contact panel. DETAILED DESCRIPTION

[0039] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0040] Bridge lifting construction is an engineering technology of lifting the whole or part of the bridge structure vertically to the design height by hydraulic equipment, mainly used in bridge reconstruction, deviation correction or expansion engineering. The bridge is gradually lifted to the predetermined height by the coordinated action of hydraulic jacks and column blocks. The method has the characteristics of high integrity, controllable precision, good safety, and does not need to destroy the original structure of the bridge. It is commonly used in bridge deviation correction, expansion or reconstruction engineering, such as lifting the old bridge to connect with the newly built bridge, or adjusting the position of the bridge pier to adapt to the change of the terrain.

[0041] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0042] With reference to Figures 1 to 5 , the present application provides a bridge synchronous lifting construction device, comprising:

[0043] A pair of support columns 1, the top of each support column 1 is provided with a support plate 2, and a one-way limiting mechanism is arranged between the support plate 2 and the support column 1, the one-way limiting mechanism can stepwise limit the plane position of the support plate 2 along the height direction;

[0044] A push-pull mechanism is arranged between two adjacent support plates 2, and the push-pull mechanism can make the two support plates 2 relatively move along the height direction;

[0045] A lifting oil cylinder 3 is arranged on any support plate 2, and the lifting oil cylinder 3 is used for abutting against the bridge body;

[0046] A top column 4 is arranged on the other support plate 2, and the top column 4 is used for abutting against the bridge body.

[0047] By arranging the one-way limiting mechanism between the support column 1 and the support plate 2, and arranging the push-pull mechanism between the two support plates 2, starting the lifting oil cylinder 3 to lift the bridge body, adjusting the plane position of the two support plates 2 by the push-pull mechanism, and limiting the plane position of the support plate 2 by the one-way limiting mechanism, and repeating multiple times, the height of the bridge body can be continuously and quickly adjusted, the lifting time of the bridge body is shortened, and the construction efficiency is effectively improved.

[0048] In an embodiment of the present application, the one-way limiting mechanism comprises:

[0049] A pair of ratchet grooves 5 are opened on the side wall of the support column 1 along the height direction;

[0050] A pair of ratchet blocks 6 are respectively used for engaging with a pair of ratchet grooves 5, the ratchet blocks 6 are fixedly connected with connecting rods 7, the connecting rods 7 are slidingly connected with the supporting plate 2;

[0051] A pair of side plates 8 are respectively fixedly connected with the pair of ratchet blocks 6, and the pair of side plates 8 are provided with elastic mechanisms therebetween.

[0052] Through the cooperation of the elastic mechanisms with the pair of ratchet blocks 6 and the ratchet grooves 5, the step-by-step plane position limitation of the supporting plate 2 can be realized by the inclined surface and the plane of the ratchet grooves 5 and the ratchet blocks 6 when the supporting plate 2 rises.

[0053] When the ratchet blocks 6 rise, the ratchet blocks 6 slide on the inclined surface of the ratchet grooves 5 and do not hinder the movement. When the ratchet blocks 6 are clamped into the ratchet grooves 5, the two are limited by the plane, and the plane contact can generate greater frictional resistance, so that the ratchet blocks 6 cannot descend, and the two work together to realize the one-way motion control.

[0054] In an embodiment of the present application, the elastic mechanism comprises:

[0055] A plurality of springs 9 are fixedly connected between the pair of side plates 8;

[0056] A plurality of guide columns 10 are slidingly penetrated between the pair of side plates 8.

[0057] The sliding direction of the side plates 8 is guided and supported by the guide columns 10, and the automatic reset of the two ratchet blocks 6 is realized by the springs 9, so that the ratchet blocks 6 can be clamped into the ratchet grooves 5.

[0058] The material of the spring 9 is preferably stainless steel, titanium alloy or carbon spring steel.

[0059] The stainless steel spring has strong corrosion resistance, excellent elasticity and toughness after special heat treatment, and long service life.

[0060] The titanium alloy spring has high strength and corrosion resistance, light weight, and is suitable for long-term use.

[0061] The carbon spring steel (such as 65Mn and 70 steel) has a relatively low price, but attention should be paid to its weak fatigue resistance, which is easy to lose elasticity after multiple deformations.

[0062] In an embodiment of the present application, the connecting rod 7 is fixedly connected with a limiting sliding block 11, and the supporting plate 2 is provided with a limiting sliding groove 12 which is slidingly matched with the limiting sliding block 11.

[0063] The limiting sliding block 11 and the limiting sliding groove 12 are both inverted convex structures, which realize the connection limiting and sliding cooperation of the connecting rod 7 and the supporting plate 2, and drive the limiting sliding block 11 to slide along the limiting sliding groove 12 through the connecting rod 7 while the ratchet block 6 slides.

[0064] A ball and lubricating oil can be arranged between the limiting sliding block 11 and the limiting sliding groove 12 to reduce the friction coefficient between them.

[0065] In one embodiment of the present application, a plurality of guide columns 10 are fixedly connected with a first connecting plate 13, a release oil cylinder 14 is fixedly installed on the first connecting plate 13, an output end of the release oil cylinder 14 is fixedly connected with a driving wedge 15, the driving wedge 15 is matched with a pair of driven wedges 16 through a slope, and the pair of driven wedges 16 are fixedly connected with a pair of side plates 8 respectively.

[0066] After the jacking construction is completed and needs to be removed, the driving wedge 15 is pushed by the release oil cylinder 14, the slope matching between the driving wedge 15 and the pair of driven wedges 16 causes the pair of driven wedges 16 to move away from each other, so as to drive the pair of ratchet blocks 6 to disengage from the ratchet grooves 5, so that the support plate 2 loses the limitation of the plane position, and the support plate 2 automatically descends through gravity.

[0067] The slope transmission principle of the driving wedge 15 and the driven wedge 16 is the same as that of the ratchet groove 5 and the ratchet block 6, and will not be described here.

[0068] In one embodiment of the present application, a base 19 is arranged at the bottom of the support column 1, and a plurality of damping rods 20 are fixedly connected between the base 19 and the support plate 2.

[0069] When the support plate 2 automatically descends, the damping rods 20 buffer and support the support plate 2, so as to avoid that the support plate 2 descends too fast and causes the structure to knock and break.

[0070] The core principle of the descending buffer damping rod is to slow down the impact and vibration in the descending process through an energy consumption mechanism. The working mechanism mainly includes two types:

[0071] Throttle hole energy consumption type

[0072] When the device descends, the piston triggers the rubber buffer contact to absorb the initial impact, and then continues to descend to make the piston enter the cylinder full of oil. The oil flows into the oil storage tank through the throttle hole in the inner wall of the cylinder, and the damping force is generated due to the oil flow friction, so as to achieve the buffering effect by consuming kinetic energy.

[0073] Tapered column conversion type

[0074] Such a device converts linear motion into rotary motion. When the piston descends, the oil flows from the annular hole into the internal cavity of the tapered column. As the hole diameter gradually decreases, the oil flow resistance increases, thereby generating a sustained damping force to balance the descending speed.

[0075] Both designs achieve the purpose of buffering through energy conversion and dissipation: the former converts the impact into oil flow friction heat energy, and the latter generates controllable resistance through structural deformation.

[0076] In one embodiment of the present application, the push-pull mechanism comprises:

[0077] A second connecting plate 17;

[0078] A pair of push-pull oil cylinders 18 are respectively fixedly connected between the second connecting plate 17 and the pair of support plates 2.

[0079] Through the push-pull operation of the pair of push-pull oil cylinders 18 on the two support plates 2, the height position adjustment of the two support plates 2 is realized.

[0080] Further, the output end of the push-pull oil cylinder 18 close to the jacking oil cylinder 3 is connected with the second connecting plate 17, and the output end of the push-pull oil cylinder 18 close to the jacking column 4 is connected with the support plate 2.

[0081] In one embodiment of the present application, the output end of the jacking oil cylinder 3 and the end face of the jacking column 4 abutting against the bridge body are both provided with a contact panel 21.

[0082] The contact panel 21 can effectively increase the contact area with the bridge body and improve the stability of jacking support.

[0083] In one embodiment of the present application, the abutting end face of the contact panel 21 and the bridge body is provided with anti-skid lines to increase the friction coefficient between the contact panel 21 and the bridge body and further improve the stability of jacking support.

[0084] Further, the working principle of the oil cylinder is essentially to convert hydraulic energy into mechanical energy, and the linear or swing movement is realized by driving the piston with hydraulic oil.

[0085] After the pressure oil provided by the hydraulic pump is input into the oil cylinder, the pressure energy is generated through the volume change of the sealed cavity, and the piston movement is converted into mechanical energy. The pressure difference between the two sides of the piston drives the piston rod to perform linear reciprocating motion, and the size of the output force follows the formula.

[0086] Key components include:

[0087] Cylinder and piston: form a sealed cavity to realize pressure transmission.

[0088] Sealing device: prevent hydraulic oil leakage.

[0089] Buffer device: decelerate the impact at the end of the piston (such as fixed small hole throttling or adjustable valve structure).

[0090] The present application also provides a bridge synchronous jacking construction method, comprising the following steps:

[0091] The jacking oil cylinder 3 and the jacking column 4 are respectively abutted against the bridge body;

[0092] Start the jacking oil cylinder 3 to jacking the bridge body, and at the same time, a gap is generated between the jacking column 4 and the bridge body;

[0093] The support plate 2 with the jacking cylinder 3 is pulled up by the push-pull mechanism, so that the two support plates 2 keep the same plane position, and the output end of the jacking cylinder 3 is retracted, and the plane position of the support plate 2 is limited by the one-way limiting mechanism, specifically, the jacking cylinder 3 is retracted, the push-pull cylinder 18 close to the jacking cylinder 3 lifts the support plate 2, and the ratchet block 6 rises along the ratchet groove 5 until the output end of the jacking cylinder 3 is in contact with the bridge body again, at this time, the two support plates 2 are in the same plane position;

[0094] The support plate 2 with the jacking cylinder 3 is pulled up by the push-pull mechanism, so that the two support plates 2 keep the same plane position, and the output end of the jacking cylinder 3 is retracted, and the plane position of the support plate 2 is limited by the one-way limiting mechanism, specifically, the jacking cylinder 3 is retracted, the push-pull cylinder 18 close to the jacking cylinder 3 lifts the support plate 2, and the ratchet block 6 rises along the ratchet groove 5 until the output end of the jacking cylinder 3 is in contact with the bridge body again, at this time, the two support plates 2 are in the same plane position;

[0095] The jacking cylinder 3 is started again to lift the bridge body, and the above steps are repeated several times until the preset lifting height is reached.

[0096] After the construction is completed, the driving wedge 15 is pushed by the release cylinder 14, the driven wedge 16 moves away, the ratchet block 6 is disengaged from the ratchet groove 5, and the support plate 2 is automatically lowered and reset by the cooperation of gravity and the damping rod 20.

[0097] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0098] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A bridge synchronous jacking construction device, characterized in that, include: A pair of support columns (1) are provided with support plates (2) on the top. A one-way limiting mechanism is provided between the support plate (2) and the support column (1). The one-way limiting mechanism can limit the planar position of the support plate (2) step by step along the height direction. A push-pull mechanism is provided between two adjacent support plates (2), which enables the two support plates (2) to move relative to each other in the height direction; A lifting cylinder (3) is mounted on any of the support plates (2), and the lifting cylinder (3) is used to abut against the bridge body; A top post (4) is mounted on another support plate (2) and is used to abut against the bridge body.

2. The bridge synchronous jacking construction device according to claim 1, characterized in that, The unidirectional limiting mechanism includes: A pair of ratchet grooves (5) are formed on the side wall of the support column (1) along the height direction; A pair of ratchet blocks (6) are respectively used to mesh with a pair of ratchet grooves (5). A connecting rod (7) is fixedly connected to the ratchet blocks (6), and the connecting rod (7) is slidably connected to the support plate (2). A pair of side plates (8) are fixedly connected to a pair of ratchet blocks (6), and an elastic mechanism is provided between the pair of side plates (8).

3. The bridge synchronous jacking construction device according to claim 2, characterized in that, The elastic mechanism includes: Multiple springs (9) are fixedly connected between a pair of side plates (8); Multiple guide posts (10) slide through between a pair of said side plates (8).

4. A bridge synchronous jacking construction device according to claim 2, characterized in that, A limiting slider (11) is fixedly connected to the connecting rod (7), and a limiting groove (12) is provided on the support plate (2) to slide in cooperation with the limiting slider (11).

5. A bridge synchronous jacking construction device according to claim 3, characterized in that, A first connecting plate (13) is fixedly connected between multiple guide posts (10). A release cylinder (14) is fixedly installed on the first connecting plate (13). An active wedge (15) is fixedly connected to the output end of the release cylinder (14). The active wedge (15) is fitted with a pair of driven wedges (16) through an inclined surface. The pair of driven wedges (16) are fixedly connected to a pair of side plates (8) respectively.

6. A bridge synchronous jacking construction device according to claim 1, characterized in that, The push-pull mechanism includes: Second connecting plate (17); A pair of push-pull cylinders (18) are fixedly connected between the second connecting plate (17) and the pair of support plates (2).

7. A bridge synchronous jacking construction device according to claim 1, characterized in that, The support column (1) is provided with a base (19) at its bottom, and a plurality of damping rods (20) are fixedly connected between the base (19) and the support plate (2).

8. A bridge synchronous jacking construction device according to claim 1, characterized in that, The output end of the lifting cylinder (3) and the end face of the top column (4) that abuts against the bridge body are both provided with contact panels (21).

9. A bridge synchronous jacking construction device according to claim 8, characterized in that, The contact panel (21) has anti-slip texture on the abutting end face of the bridge body.

10. A method for synchronous jacking construction of a bridge, based on a synchronous jacking construction device for a bridge as described in any one of claims 1-9, characterized in that, Includes the following steps: The lifting cylinder (3) and the top column (4) are respectively abutted against the bridge body; The lifting cylinder (3) is activated to lift the bridge body; The push-pull mechanism pushes the support plate (2) with the top column (4) to rise, so that the top column (4) abuts against the bridge body, and the planar position of the support plate (2) is restricted by the one-way limiting mechanism. The push-pull mechanism pulls the support plate (2) with the lifting cylinder (3) upward, so that the two support plates (2) are in the same plane position. At the same time, the output end of the lifting cylinder (3) retracts and the plane position of the support plate (2) is restricted by the one-way limiting mechanism. Start the lifting cylinder (3) to lift the bridge body again, repeat the above steps multiple times until the preset lifting height is reached.

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