Bridge support leveling method

Abstract

The invention provides a bridge support leveling method, which relates to the technical field of steel structure bridge processing and manufacturing, and comprises the following steps: S1, positioning, S2, trepanning, S3, compacting, S4, welding, S5, reinforcing and S6, leveling. The deformed plate is placed below the steel beam bottom plate, and a plug welding hole is formed in the position, right opposite to the gap, of the deformed plate; then the deformation plate is elastically deformed through jacking and pressing until the deformation plate is completely attached to the steel beam bottom plate, and the deformation plate and the steel beam bottom plate are rapidly pre-fixed through positioned welding; after top pressure is removed, secondary welding reinforcement is carried out; and finally, the redundant thickness of the deformed plate is cut off, and leveling is completed. According to the scheme, the method that the plug welding holes are formed in the support base plate, positioned welding is conducted in the jacking state, jacking equipment is removed, and then reinforcement is conducted is adopted, gaps can be reduced as much as possible, the deformed plate can be rapidly leveled conveniently, and the durability, stability and safety of the whole bridge are improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure bridge processing and manufacturing, and in particular to a bridge support leveling method. Background Art

[0002] In a bridge with a steel truss continuous beam structure, the steel beam support is the core component, which is used to transfer the vertical load of the bridge beam to the pier. Due to the slope between the beam and the horizontal plane, the support has a strong pressure bearing capacity but a weak shear resistance. Therefore, it is necessary to set a wedge-shaped pad between the bottom plate of the beam and the support to level the beam, and try to keep the bottom of the beam and the support in horizontal contact to avoid shear deformation of the support and affect the stability and safety of the structure. The setting of the support pad enables the upper load to be reliably transferred to the support and the pier. Therefore, it is necessary to increase the effective contact area between the support pad and the bottom plate of the beam as much as possible to ensure that the support is more evenly stressed.

[0003] During construction, dense partitions need to be set inside the beam body corresponding to the support part, and the partitions are welded and fixed to the bottom plate of the steel beam. During the welding process, due to the single-sided heating of the bottom plate of the steel beam, the temperature difference between the welding part and the non-welding part is too large and the temperature distribution is uneven, which causes the middle part of the bottom plate of the steel beam between the adjacent partitions to bulge upward and deform, and the flatness is reduced. The multiple protrusions and deformations are generally distributed in a wavy shape in the contact surface between the support pad and the bottom plate of the steel beam, resulting in an excessive gap when the pad and the bottom plate of the steel beam are assembled. Under normal circumstances, the thickness of the bottom plate and the partition of the steel truss is between 20mm and 40mm, and the influence of welding deformation is relatively small. The flatness deviation of the bottom plate can be prevented and corrected by adjusting the welding process to reduce the welding heat, adding temporary constraints or post-weld flame finishing. However, when the thickness of the partition and the bottom plate exceeds the conventional thickness and the design requires full penetration welding, the conventional method cannot achieve the expected effect. Summary of the invention

[0004] The problem solved by the present invention is how to quickly and efficiently adjust the flatness deviation of the steel beam bottom plate when the steel beam bottom plate exceeds the conventional thickness and the problem of bottom plate deformation exceeding the tolerance cannot be handled by common methods, and reduce the gap caused by welding deformation to an acceptable range, thereby improving the overall stability and safety of the bridge.

[0005] In order to solve the above problems, the present invention provides a bridge bearing leveling method.

[0006] The present invention provides a bridge support leveling method, comprising the following steps:

[0007] S1 Positioning: Provide a deformable plate and a steel beam bottom plate, wherein the steel beam bottom plate is connected to the bridge body; place the deformable plate horizontally below the steel beam bottom plate, and adjust the position of the deformable plate in a plane to meet the design requirements;

[0008] S2: providing a hole-opening device, finding out the position where there is a gap between the deformed plate and the bottom plate of the steel beam, and opening a first plug welding hole on the deformed plate so that the first plug welding hole faces the gap;

[0009] S3 compaction: providing a top pressing device to elastically deform the deformable plate until the deformable plate is fully fitted with the bottom plate of the steel beam;

[0010] S4 welding: providing welding equipment, welding in the first plug welding hole, and spot welding along the outer contour of the deformed plate to pre-fix the deformed plate and the bottom plate of the steel beam;

[0011] S5 reinforcement: remove the top pressing equipment and continue to weld and reinforce the support pad and the steel beam bottom plate along the outer contour of the deformed plate;

[0012] S6 leveling: provide milling equipment to cut the surface of the deformed plate until the flatness of the bottom surface of the deformed plate meets the design requirements.

[0013] Compared with the prior art, the bridge support leveling method disclosed in the present invention has at least the following features:

[0014] Beneficial effects:

[0015] By performing the above steps in sequence, first, using the deformed plate as a support pad, the deformed plate is placed under the bottom plate of the steel beam, a gap between the two is found, and a first plug welding hole is opened at a position corresponding to the gap between the deformed plate and the gap; then, the deformed plate is pressed upward to make the top surface of the deformed plate completely fit with the bottom surface of the bottom plate of the steel beam; finally, the deformed plate is welded and fixed to the bottom plate of the steel beam, and then the excess part of the deformed plate is cut off by milling, thereby completing the leveling, so that the deformed plate can be directly docked and fixed to the support on the horizontal plane.

[0016] It is worth noting that under the action of the top pressure equipment, the deformed plate and the bottom plate of the steel beam remain in a completely fitted state. At this time, the deformed plate and the bottom plate of the steel beam are welded and fixed first, and then the top pressure equipment is removed. This can minimize the gap, facilitate the leveling of the bearings, and improve the overall durability, stability and safety of the bridge.

[0017] At the same time, weld at the plug welding hole first, and spot weld along the outer contour of the deformed plate to pre-fix the deformed plate and the bottom plate of the steel beam, so as to maintain accurate relative position to avoid deformation and displacement caused by long-term welding; after removing the top pressure equipment, continue to weld and reinforce the deformed plate and the bottom plate of the steel beam along the outer contour.

[0018] Compared with removing the top pressing equipment after the welding is completed, this solution can effectively shorten the use time of the top pressing equipment and save energy. In addition, the existence of the top pressing equipment will also have a negative effect of blocking the welding of the deformed plate in the circumferential direction. Therefore, this solution adjusts the welding method to first positioning welding and then reinforcement, which effectively improves the welding efficiency while shortening the top pressing time and saving energy.

[0019] Optionally, after step S6, step S7 is further included: providing a compensation plate, wherein the compensation plate is consistent in size and shape with the deformed plate, and the compensation plate is used to be fitted and connected to the deformed plate to compensate for the thickness of the deformed plate.

[0020] Optionally, the deformable plate includes a plurality of strips that are spliced ​​in sequence, and the strips are connected and fixed to the steel beam bottom plate and adjacent strips by welding seams.

[0021] Optionally, the strip plate is divided into a perforated plate and a pressure plate, two pressure plates are respectively located at two ends, a plurality of perforated plates are sequentially laid flat between the two pressure plates, and the perforated plate is used to open the first plug welding hole.

[0022] Optionally, the first plug welding holes are distributed at equal intervals on a center line of the strip parallel to the long side.

[0023] Optionally, when performing step S5, starting from the middle strip, first weld the seams between adjacent strips from the inside to the outside in sequence; then weld the strips and the steel beam bottom plate along the outer contour of the deformed plate and fix them.

[0024] Optionally, a groove is provided on the side of the strip facing the joint; and / or a reverse groove is provided on the edge of the compensation plate.

[0025] Optionally, step S7 includes: opening a second plug welding hole on the compensation plate; the second plug welding hole corresponds to the position of the first plug welding hole, and the first plug welding hole completely falls within the range of the second plug welding hole.

[0026] Optionally, step S7 also includes: welding in the second plug welding hole and spot welding along the outer contour of the compensation plate to pre-fix the compensation plate and the deformation plate; and continuing to weld and reinforce the compensation plate and the deformation plate along the outer contour of the compensation plate.

[0027] Optionally, in step S3, when the gap between the deformed plate and the bottom plate of the steel beam does not exceed 0.5 mm, it is considered to be fully fitted. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of the steel bridge support.

[0029] Figure 2 for Figure 1 A partial enlarged view of area A in the middle.

[0030] Figure 3 This is a step diagram of the bridge support leveling method of Example 1 of the present application.

[0031] Figure 4 This is a large-scale drawing of the deformed plate structure of Example 1 of the present application.

[0032] Figure 5 This is a plan view of the deformed plate of Example 1 of the present application.

[0033] Figure 6 for Figure 5 Section view along AA direction.

[0034] Figure 7 This is a step diagram of the bridge support leveling method of Example 2 of the present application.

[0035] Figure 8 This is a large-scale drawing of the support pad structure of Example 2 of the present application.

[0036] Fig. 9 for Figure 8 A partial enlarged view of area B in the middle.

[0037] Fig.10 This is a plan view of the deformed plate of Example 2 of the present application.

[0038] Description of reference numerals:

[0039] 1. Steel truss; 11. Steel beam bottom plate; 12. Partition; 2. Support pad; 21. Deformation plate; 211. First plug welding hole; 212. Perforated plate; 213. Edge clamping plate; 214. Joint; 215. Groove; 22. Compensation plate; 221. Second plug welding hole; 222. Reverse groove; 3. Gap; 4. Weld. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0041] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the drawings represents the left and right position, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis 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 on the present invention.

[0042] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0043] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0044] like Figure 1 , Figure 2 As shown, a common steel truss 1 is formed by welding and fixing a bottom plate, a top plate and a web plate. A plurality of partitions 12 are welded inside the steel truss 1 to strengthen the support part. A support pad 2 is provided at the connection between the bottom plate 11 of the steel beam and the support. The support pad 2 needs to be leveled according to the design elevation so that the steel truss 1 and the support can be connected horizontally. However, when the weld 4 between the partition 12 and the bottom plate 11 is a full penetration weld, the bottom plate 11 of the steel beam will produce a large degree of welding deformation, and the part of the bottom plate 11 of the steel beam corresponding to the center of the adjacent partition 12 will arch upward, forming a gap 3 between the support pad 2, thereby seriously affecting the flatness of the support pad 2. The existence of the gap 3 makes it impossible for the components to fit tightly and fix, which poses a hidden danger to the overall construction quality and structural stability of the bridge.

[0045] Under normal circumstances, the thickness of the bottom plate of the steel truss beam 1 and the partition 12 are both between 20 mm and 40 mm, and the weld 4 between the bottom plate 11 of the steel beam and the partition 12 is generally a fillet weld or a partial penetration weld, and the welding deformation has little effect on the flatness of the bottom plate 11 of the steel beam. Even if a penetration weld is also used, it can be processed by adding temporary restraint components before welding, optimizing welding parameters during welding, and correcting measures after welding, so that the gap 3 between the support pad 2 and the bottom plate after assembly meets the requirements of the allowable deviation.

[0046] However, if the design thickness of the steel beam bottom plate 11 and the partition plate 12 is 80 mm to 100 mm, and the partition plates 12 at the support are densely arranged, and the steel beam bottom plate 11 and the partition plates 12 are all welded through fusion 4, the welding deformation is very serious. Even if the above-mentioned preventive and corrective measures for welding deformation are taken, it is difficult to make the bottom plate flat, resulting in that when the support pad plate 2 is installed, the assembly gap 3 between the bottom plate and the support pad plate 2 cannot meet the requirements.

[0047] In the related art, the method to solve the gap 3 deviation of the ultra-thick plate with unconventional thickness is to thicken the bottom plate of the steel beam corresponding to the support position, and make the increased thickness sufficient to compensate for the flatness deviation of the bottom plate after welding. After the steel beam is manufactured, the bottom plate of the steel beam corresponding to the support position is milled flat, and then the support pad that meets the slope of the beam body is installed and welded to fix it, thereby solving this problem.

[0048] However, since the demand for this type of plate, which is far beyond the thickness range of conventional steel plates, is very small, it needs to be rolled on site, which has high procurement costs and is difficult. In addition, the temporary rolling cycle is long and the yield rate is low. The above factors will reduce the construction efficiency of the bridge.

[0049] In response to the problems existing in the above-mentioned related technologies, the present application provides a bridge bearing leveling method.

[0050] Example 1

[0051] like Figure 3 As shown, a bridge support leveling method provided in Embodiment 1 of the present invention comprises the following steps:

[0052] S1 Positioning: Provide a deformation plate 21 and a steel beam bottom plate 11, and the steel beam bottom plate 11 is connected to the bridge body; draw an assembly position line at the bottom of the steel beam bottom plate 11, place the deformation plate 21 under the steel beam bottom plate 11, and adjust the position of the deformation plate 21 in the plane to align with the assembly position line.

[0053] Specifically, the deformed plate 21 is preferably a square steel plate, and its size should be such that it completely covers the deformed portion of the steel beam bottom plate 11 .

[0054] S2: drilling a hole: providing drilling equipment, finding out the position where the gap 3 exists between the deformed plate 21 and the bottom plate 11 of the steel beam, and drilling a first plug welding hole 211 on the deformed plate 21 so that the first plug welding hole 211 faces the gap 3.

[0055] like Figure 4 As shown, in this embodiment, the hole-making device is preferably a cutting machine, and may also be other devices with a hole-making function. According to actual construction experience, the position of the largest gap 3 is at the center of the interval between adjacent partitions 12, and the gap 3 is distributed in a wave shape along the position of the partition 12. It is preferred to align the first plug welding hole 211 with the center axis of the gap 3.

[0056] S3 Compacting: providing a top pressing device to elastically deform the deformable plate 21 until the deformable plate 21 is fully fitted with the bottom plate 11 of the steel beam.

[0057] Specifically, in this embodiment, the pressing device is preferably a jack, or other devices with a pressing function. The jack is used to press the deformed plate 21 upward, and the opening of the first plug welding hole 211 can weaken the bending resistance of the deformed plate 21, so that the deformed plate 21 can be easily bent.

[0058] Optionally, in this embodiment, when the gap 3 between the deformable plate 21 and the bottom plate 11 of the steel beam does not exceed 0.5 mm, it is considered to be fully fitted. In other embodiments, the allowable range of the gap 3 can also be set according to the specific conditions of different projects.

[0059] S4 welding: provide welding equipment, perform welding in the first plug welding hole 211, and perform spot welding along the outer contour of the deformed plate 21 to pre-fix the deformed plate 21 and the steel beam bottom plate 11.

[0060] S5 reinforcement: remove the top pressing equipment and continue to weld and reinforce the deformed plate 21 and the steel beam bottom plate 11 along the outer contour of the deformed plate 21.

[0061] like Figure 5 As shown, the arrow indicates the welding direction. Specifically, in this embodiment, taking the deformation plate 21 with nine first plug welding holes 211 as an example, when spot welding positioning and edge welding reinforcement are performed, welding is performed in the order of a→b→c→d→e. From the inside to the outside, spot welding first and then surrounding welding can shorten the time of a single welding by a small number of times, thereby minimizing welding deformation.

[0062] After welding is completed, non-destructive testing can be performed on the weld 4 to ensure that the weld 4 has no defects; if there are defects in the weld 4, a secondary repair welding is required for the defective part.

[0063] S6 Leveling: Provide milling equipment to cut the surface of the deformed plate 21 until the flatness of the bottom surface of the deformed plate 21 meets the design requirements.

[0064] like Figure 6 As shown, specifically, in this embodiment, the milling equipment is a milling machine, which cuts the bottom surface of the deformed plate 21 to a designed height in small amounts and multiple times, and performs a flatness inspection while cutting, thereby improving the leveling accuracy.

[0065] The beneficial effect of leveling the deformable plate 21 by the method in this embodiment 1 is as follows: the deformable plate 21 is used as the support pad 2, and the deformable plate 21 is leveled by sequentially performing the above steps S1-S6, so that the deformable plate 21 can be accurately docked and fixed with the support in the horizontal plane. A first plug welding hole 211 corresponding to the gap 3 is opened on the deformable plate 21, and the deformable plate 21 is made to fit with the bottom plate 11 of the steel beam by using a top pressing device, and spot welding is performed while the deformable plate 21 and the bottom plate 11 of the steel beam are kept in contact, and then the top pressing device is removed, and then welding reinforcement is performed. The original improvement of this scheme can effectively control the gap 3 between the deformable plate 21 and the bottom plate 11 of the steel beam within the allowable range.

[0066] At the same time, the first plug welding hole 211 is first spot welded and positioned, and after the top pressing device is removed, the deformed plate 21 and the bottom plate 11 of the steel beam are welded and reinforced along the outer contour. Compared with removing the top pressing device after the welding is completely completed, this solution can effectively shorten the use time of the top pressing device and reduce energy consumption; and the existence of the top pressing device will also have a negative effect of hindering and shielding the circumferential welding of the deformed plate 21. Therefore, this solution adjusts the welding method to spot welding first and then reinforcement, which effectively improves the welding efficiency while also shortening the top pressing time and saving energy.

[0067] It is worth noting that the design thickness of the bearing pad 2 needs to be compatible with the volume of the bridge. This embodiment is suitable for the case where the thickness of the bearing pad 2 does not exceed 30 mm.

[0068] Example 2

[0069] When the thickness of the bearing pad 2 exceeds 30 mm, it has a strong bending resistance and is difficult to bend and deform by a jack. Therefore, embodiment 2 of the present invention provides a bridge bearing leveling method, which is suitable for the case where the design thickness of the bearing pad 2 is greater than 30 mm, and can overcome the problem of the difficulty of deformation of the thick bearing pad 2.

[0070] like Figure 7 As shown, the difference between Example 2 and Example 1 is that the support pad 2 is changed from an integrated type to a method of two thin steel plates being overlapped and fixed. In Example 2, the support pad 2 includes a deformation plate 21 and a compensation plate 22 which are overlapped and fixed. The deformation plate 21 is used to fit the bottom plate 11 of the steel beam to eliminate the gap 3; the compensation plate 22 is used to compensate for the design thickness so that the overall performance of the support pad 2 meets the design requirements.

[0071] like Figure 7As shown, a bridge support leveling method provided by Embodiment 2 of the present invention specifically includes the following steps:

[0072] First, the above steps S1 to S6 are performed to fit and fix the deformable plate 21 to the bottom plate 11 of the steel beam, and the excess thickness is cut off to level the deformable plate 21 .

[0073] A compensation plate 22 is provided, and then step S7 is performed to fit and fix the compensation plate 22 to the deformation plate 21 to obtain a complete support pad 2.

[0074] like Figure 8 , Fig. 9 As shown, optionally, in this embodiment, the deformable plate 21 is preferably formed by sequentially splicing a plurality of square strips. Since the sizes and widths of the gaps 3 at different positions are different, each strip corresponds to the gaps 3 at different positions, and the gaps 3 at different positions are leveled more specifically, thereby improving the leveling accuracy.

[0075] like Fig. 9 As shown, the strip plate can be divided into a perforated plate 212 and a pressure plate 213. The two pressure plates 213 are respectively located at both ends of the deformation plate 21 and are aligned with the edges of the compensation plate 22. The perforated plates 212 are located between the two pressure plates 213. No plug welding holes are opened on the pressure plates 213. The perforated plates 212 are used to cover the gap 3 area and to open the first plug welding hole 211.

[0076] In this embodiment, for example, three perforated plates 212 are laid in sequence between two edge clamps 213. The width of the perforated plate 212 is equal to the distance between adjacent partitions 12, and the joint 214 between the strips is located directly below the partition 12. The sum of the widths of the perforated plate 212 and the edge clamp 213 is equal to the width of the compensation plate 22, and the edge clamp 213 plays a role in compensating the width difference. The three first plug welding holes 211 are equidistantly spaced along the midline of the perforated plate 212 parallel to the long side.

[0077] When fixing the strips, perform steps S3 and S4 on each strip from the inside to the outside; when performing step S5, press Fig.10 In the order and direction of a→b→c→d, the strips 21 and the steel beam bottom plate 11 are welded and reinforced along the joints 214 between the strips and the outer contour of the integrally deformed plate 21 .

[0078] Optionally, a groove 215 is provided on the side of the strip facing the joint 214; and / or a reverse groove 222 is provided on the edge of the compensation plate 22. Groove welding can improve the welding effect.

[0079] like Fig. 9As shown, in this embodiment, the long sides of the three perforated plates 212 are all provided with a 45° welding groove 215; the long sides of the two pressure plates 213 facing the perforated plates 212 are also provided with a 45° welding groove 215; the four sides of the compensation plate 22 are all provided with a 45° reverse groove 222, and the depth of the reverse groove 222 is 10 mm.

[0080] Specifically, a jack is used to press each position near the first plug welding hole 211 of the perforated plate 212 in turn, so that the perforated plate 212 fits with the bottom plate 11 of the steel beam, and then the first plug welding hole 211 is immediately welded, and then the edge of the perforated plate 212 is pressed in turn to ensure that all parts of the perforated plate 212 and the bottom plate 11 of the steel beam are kept in contact. The gap 3 does not exceed the allowable range of 0.5mm, and the perforated plate 212 and the edge plate 213 are immediately fixed by positioning welding. Fig.10 As shown, the dotted lines of the seam 214 and the outer periphery indicate the locations of the tack welds.

[0081] After confirming that the gap 3 between the periphery of each strip plate and the bottom plate 11 of the steel beam meets the requirements, the butt welds 4 between the strip plates and the fillet welds 4 around the strip plates are welded, and the welding sequence is to first weld the butt welds 4 symmetrically from the middle to both sides, and then symmetrically weld the peripheral fillet welds 4. After welding, the welds 4 are subjected to non-destructive testing to ensure that there are no defects.

[0082] Step S7 specifically includes: opening a second plug welding hole 221 on the compensation plate 22; aligning and fitting the compensation plate 22 under the deformation plate 21, welding in the second plug welding hole 221, and spot welding along the outer contour of the compensation plate 22 to pre-fix the compensation plate 22 and the deformation plate 21; continuing to weld and reinforce the compensation plate 22 and the deformation plate 21 along the outer contour of the compensation plate 22.

[0083] The welding sequence of the second plug welding hole 221 is the same as that of the first plug welding hole 211 , and the welding reinforcement sequence of the outer contour of the compensation plate 22 is the same as that of the deformation plate 21 in Example 1.

[0084] Specifically, the compensation plate 22 is preferably a square steel plate having the same size and shape as the deformation plate 21 .

[0085] In this embodiment, a second plug welding hole 221 is opened at a position on the compensation plate 22 corresponding to the first plug welding hole 211 , so that the first plug welding hole 211 can completely fall within the range of the second plug welding hole 221 .

[0086] Specifically, the second plug welding hole 221 has the same shape as the first plug welding hole 211 and is coaxially aligned. It is preferred that the second plug welding hole 221 is slightly larger than the first plug welding hole 211, so as to increase the welding area and improve the connection strength between the perforated plate 212 and the compensation plate 22.

[0087] Since the bottom of the strip board has been leveled in step S6, there is no need for pressing when assembling the compensation plate 22, and the compensation plate 22 can fit tightly with the strip board.

[0088] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A bridge support leveling method, characterized in that: The following steps are involved: S1 positioning: providing a deformation plate (21) and a steel beam bottom plate (11), wherein the steel beam bottom plate (11) is connected to the bridge body; placing the deformation plate (21) horizontally below the steel beam bottom plate (11), and adjusting the position of the deformation plate (21) in a plane to meet the design requirements; S2 Opening a hole: providing a hole opening device, finding a location where a gap (3) exists between the deformed plate (21) and the bottom plate (11) of the steel beam, and opening a first plug welding hole (211) on the deformed plate (21), so that the first plug welding hole (211) faces the gap (3); S3 compaction: providing a top pressing device to elastically deform the deformable plate (21) until the deformable plate (21) is fully fitted with the bottom plate (11) of the steel beam; S4 welding: providing welding equipment, welding in the first plug welding hole (211), and spot welding along the outer contour of the deformed plate (21), so that the deformed plate (21) and the steel beam bottom plate (11) are pre-fixed; S5 reinforcement: removing the top pressing device and continuing to weld and reinforce the support pad (2) and the steel beam bottom plate (11) along the outer contour of the deformed plate (21); S6: Leveling: providing a milling device to cut the surface of the deformable plate (21) until the flatness of the bottom surface of the deformable plate (21) meets the design requirements.

2. The bridge support leveling method according to claim 1, characterized in that: After step S6, step S7 is also included: providing a compensation plate (22), wherein the compensation plate (22) is consistent in size and shape with the deformation plate (21), and the compensation plate (22) is used to be attached to the deformation plate (21) to compensate for the thickness of the deformation plate (21).

3. The bridge support leveling method according to claim 2, characterized in that: The deformable plate (21) comprises a plurality of strips that are spliced ​​in sequence, and the strips are connected and fixed to the steel beam bottom plate (11) and adjacent strips by means of welding seams (214).

4. The bridge support leveling method according to claim 3, characterized in that: The strip plate is divided into a perforated plate (212) and a pressure plate (213), two pressure plates (213) are respectively located at two ends, and a plurality of perforated plates (212) are sequentially laid flat between the two pressure plates (213), and the perforated plate (212) is used to open the first plug welding hole (211).

5. The bridge support leveling method according to claim 4, characterized in that: The first plug welding holes (211) are distributed at equal intervals on the center line of the strip parallel to the long side.

6. The bridge support leveling method according to claim 3, characterized in that: When performing step S5, starting from the middle strip, firstly weld the joints (214) between adjacent strips from the inside to the outside; then weld the strips and the steel beam bottom plate (11) along the outer contour of the deformed plate (21) to fix them.

7. The bridge support leveling method according to claim 3, characterized in that: A groove (215) is provided on the side of the strip facing the joint (214); and / or a reverse groove (222) is provided on the edge of the compensation plate (22).

8. The bridge support leveling method according to claim 2, characterized in that: Step S7 comprises: opening a second plug welding hole (221) on the compensation plate (22); the second plug welding hole (221) corresponds to the position of the first plug welding hole (211), and the first plug welding hole (211) completely falls within the range of the second plug welding hole (221).

9. The bridge support leveling method according to claim 8, characterized in that: Step S7 also includes: welding in the second plug welding hole (221) and spot welding along the outer contour of the compensation plate (22) to pre-fix the compensation plate (22) and the deformation plate (21); and continuing to weld and reinforce the compensation plate (22) and the deformation plate (21) along the outer contour of the compensation plate (22).

10. The bridge support leveling method according to claim 1, characterized in that: In step S3, when the gap (3) between the deformed plate (21) and the bottom plate (11) of the steel beam does not exceed 0.5 mm, it is considered to be fully fitted.

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