A method for fixing the end plate of a bridge flat connector

Abstract

This invention relates to the field of bridge technology and provides a method for fixing a flat connector plate for bridges, comprising: drilling holes in the flat connector plate using a pre-drilling method; drawing multiple bending lines on the surface of the flat connector plate; bending the flat connector plate along the corresponding bending lines using a cold pressing method; marking installation lines on the surface of the steel beam so that one side edge of the flat connector plate is fixed along the steel beam at the installation line; welding a designated portion of the bent side edge of the flat connector plate to the steel beam at the corresponding installation line; and welding the remaining portion of the bent side edge of the flat connector plate to the steel beam at the corresponding installation line. This achieves accurate connection between the steel beam and multiple I-beam members intersecting in different directions. It also enables the flat connector plate to connect with multiple I-beam members intersecting at different angles, while simultaneously ensuring a secure connection between the flat connector plate and the steel beam.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, and more specifically, to a method for fixing a flat-joint end plate of a bridge. Background Technology

[0002] In existing technologies, steel truss bridges are structural forms that hollow out solid steel plate girder bridges according to certain rules. The overall structure is in the form of beams to withstand bending moments and shear forces. It consists of a bridge deck, supports, and piers.

[0003] For steel truss bridges, the flat connector end plate is typically connected to the corresponding steel beam, and then to the corresponding I-beam members, such as I-beams. Meanwhile, with the continuous innovation of bridge designs and the increasing variety of steel beam structures, especially the emergence of curved steel truss bridges, the requirements for the flat connector end plate connection are constantly increasing to ensure a smooth connection between the steel beam and the corresponding I-beam members. This places more stringent demands on the fixing of the flat connector end plate to the steel beam, often requiring the flat connector end plate to connect to multiple I-beam members intersecting at different angles, while simultaneously requiring a secure connection between the flat connector end plate and the steel beam. This leads to low fixing efficiency of the flat connector end plate to the steel beam, affecting the construction efficiency of steel truss bridges. Summary of the Invention

[0004] The present invention aims to solve the problem of low fixing efficiency of the flat connecting head plate of existing steel truss bridges to the steel beams and I-beams respectively.

[0005] To address the above problems, the present invention provides a method for fixing a flat connector end plate in a bridge, comprising:

[0006] Use the pre-hole method to drill holes in the flat connector plate;

[0007] Multiple bending lines are drawn on the surface of the flat connecting head plate;

[0008] The flat connecting head plate is bent along the corresponding bending line using a cold pressing method;

[0009] Mark the installation line on the surface of the steel beam so that one edge of the flat connector head plate is fixed along the installation line of the steel beam;

[0010] The designated portion on one side edge of the bent flat connecting head plate is welded and fixed to the steel beam at the corresponding installation line;

[0011] The remaining portion on one side edge of the bent flat connecting head plate is welded and fixed to the steel beam at the corresponding installation line;

[0012] The bending lines are at least two, and the designated location is the edge of the flat connecting head plate between two adjacent bending lines.

[0013] Optionally, after welding and fixing the designated portion on one side edge of the bent flat connecting head plate to the steel beam at the corresponding mounting line, the method further includes:

[0014] Compare the overlap between the remaining portion of one edge of the bent flat connector plate and the corresponding mounting line.

[0015] Based on the overlap, determine whether to use fire-assisted straightening to correct the deformation of the flat connecting head plate, so that one edge of the flat connecting head plate coincides with the installation line at the steel beam.

[0016] Optionally, determining whether to perform heat treatment on the deformed part of the flat connecting plate based on the overlap includes:

[0017] If the remaining part on one side edge of the bent flat connector plate does not coincide with the corresponding mounting line, the deformed part of the flat connector plate is corrected by fire correction.

[0018] If the remaining portion of one side edge of the bent flat connecting head plate coincides with the corresponding installation line, then the remaining portion of one side edge of the bent flat connecting head plate is welded and fixed to the steel beam at the corresponding installation line.

[0019] Optionally, if the remaining portion of one edge of the bent flat connector plate does not coincide with the corresponding mounting line, then the heat straightening of the deformed flat connector plate includes:

[0020] The flat connector plate is straightened by fire, and the deviation between the remaining part on one side edge of the flat connector plate and the corresponding installation line is checked in real time.

[0021] When the remaining portion of the edge on one side of the flat connector plate coincides with the corresponding mounting line, stop the fire-working correction of the flat connector plate.

[0022] The remaining portion of one edge of the bent flat connecting head plate is welded and fixed to the steel beam at the corresponding installation line.

[0023] Optionally, if the remaining portion of one edge of the bent flat connector plate does not coincide with the corresponding mounting line, then the process of straightening the deformed portion of the flat connector plate includes:

[0024] Use a board to fix the part of the flat connecting head plate that has undergone fire straightening treatment;

[0025] The remaining portion of one side edge of the bent flat connecting head plate is welded and fixed to the steel beam at the corresponding installation line using spot welding.

[0026] Remove the horse board.

[0027] Optionally, the method of drilling holes in the flat connector head plate using the pre-drilling method includes:

[0028] According to the unfolded view of the flat connecting head plate, mark the drilling positions on the surface of the flat connecting head plate;

[0029] Drill holes on the surface of the flat connecting head plate according to the drill hole location markings;

[0030] The unfolded view of the flat connecting head plate is a drawing based on the shape of the flat connecting head plate before bending.

[0031] Optionally, drawing multiple bending lines on the surface of the flat connecting head plate includes:

[0032] Based on the unfolded diagram of the flat connecting head plate, multiple bending lines are drawn on the surface of the flat connecting head plate.

[0033] Optionally, there are multiple flat connecting head plates, and the multiple flat connecting head plates have the same shape;

[0034] The method of drilling holes in the flat connector plate using the pre-drilling method includes:

[0035] The drilling locations are marked on the surface of one of the flat connecting head plates;

[0036] Multiple flat connector plates of the same shape are stacked together, and the sides of the multiple flat connector plates in the stack are aligned.

[0037] Place the flat connector plate marked with the drilling position on top of a stack of multiple flat connector plates;

[0038] Using a drilling device, holes are drilled downwards into a stack of multiple flat connector plates, starting from the flat connector plate marked with the drilling location.

[0039] Optionally, after the heat straightening of the warped and deformed portion, the process further includes:

[0040] Repeat the steps of drilling holes in the flat connector plate using the pre-drilling method until the remaining part of one side edge of the bent flat connector plate is welded and fixed to the steel beam at the corresponding mounting line, so that the same side edge of the two bent flat connector plates is fixed along the steel beam at their respective mounting lines, and the two fixed flat connector plates are arranged parallel to each other.

[0041] The ends of multiple I-shaped rods are connected to multiple different areas of each of the fixed flat connecting head plates;

[0042] The multiple different regions are defined by the multiple bending lines that divide the flat connecting head plate into multiple different regions.

[0043] Compared with the prior art, the present invention has the following technical effects:

[0044] In the fixing method of this invention, multiple through holes are first drilled in the flat connector plate before welding using a pre-drilling method, allowing for drilling of a large batch of flat connector plates. This improves the production efficiency of the flat connector plates. Furthermore, it avoids the impact on the overall efficiency of installation and fixing the flat connector plates caused by drilling after welding. Then, the flat connector plate is bent in multiple places using a cold pressing method, thereby improving bending efficiency, especially suitable for bending large batches of flat connector plates. The cold pressing method also prevents deformation and springback after bending, ensuring the bending quality of the flat connector plates. Moreover, by drawing multiple bending lines in advance and bending along these lines, the accuracy of the cold pressing bending of the flat connector plate is ensured. Finally, an installation line is marked on the steel beam surface, and this installation line serves as the reference for fixing the bent flat connector plate, facilitating positioning and ensuring accurate positioning of the bent flat connector plate. Then, the edge of one side of the flat connector plate between two adjacent bending lines is first welded and fixed to the steel beam at the corresponding installation line. Using this as a reference and starting point for welding, the remaining portion of the bent edge of the flat connector plate is then welded and fixed to the steel beam at the corresponding installation line. This completes the multiple bends of the bridge flat connector plate and fixes it to the steel beam. This method is particularly suitable for bending large quantities of flat connector plates and quickly and accurately fixing them to steel beams.

[0045] Next, after welding and fixing the remaining portion of one edge of the bent flat connecting plate to the steel beam at the corresponding installation line, the bent flat connecting plate, having at least two bending lines, is positioned at the edge of one side of the plate between two adjacent bending lines. This creates at least three non-plane plate structures within the bent flat connecting plate, allowing the ends of I-beams intersecting in different directions to connect smoothly to these non-plane plate structures. Furthermore, one edge of the bent flat connecting plate connects to the steel beam. This achieves accurate connection between the steel beam and multiple I-beams intersecting in different directions. It satisfies the requirement that the flat connecting plate can connect to multiple I-beams intersecting at different angles, while also ensuring a secure connection between the flat connecting plate and the steel beam.

[0046] This solves the problem of low fixing efficiency of the flat connecting head plate of existing steel truss bridges to both steel beams and I-beams. Attached Figure Description

[0047] Figure 1This is a schematic perspective view of the steel beam, flat connecting plate, and I-beam connected together in an embodiment of the present invention;

[0048] Figure 2 This is a schematic perspective view of the steel beam without a fixed flat connecting plate and I-shaped member in an embodiment of the present invention;

[0049] Figure 3 This is a schematic top view of the flat connecting head plate in an embodiment of the present invention;

[0050] Figure 4 This is a schematic flowchart illustrating the main steps of the method for fixing the end plate of a bridge flat connector according to the present invention.

[0051] Figure 5 This is a schematic flowchart illustrating all the steps of the method for fixing the bridge flat connector head plate according to the present invention.

[0052] Explanation of reference numerals in the attached drawings: 100, flat connecting head plate; 110, bending line; 120, one side edge; 130, setting position; 140, through hole; 200, steel beam; 210, installation line; 300, I-beam member. Detailed Implementation

[0053] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0054] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0057] In the accompanying drawings, the Z-axis represents the vertical direction, i.e., the up-down direction, and the positive direction of the Z-axis (i.e., the direction the arrow points to) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; the Y-axis represents the front-back direction, i.e., the extension direction of one side edge 120 of the flat connecting head plate 100; the X-axis represents the left-right direction, i.e., the width direction of the flat connecting head plate 100. It should be noted that the aforementioned representations of the Z-axis, Y-axis, and X-axis are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0058] See Figures 1 to 4 To solve the above-mentioned technical problems, this embodiment provides a method for fixing a flat connector end plate of a bridge, including:

[0059] Use the pre-drilling method to drill holes in the flat connector head plate 100; the hole here can refer to a through hole 140.

[0060] Draw multiple bending lines 110 on the surface of the flat connecting head plate 100;

[0061] The flat connecting head plate 100 is bent along the corresponding bending line 110 using a cold pressing method;

[0062] Mark the installation line 210 on the surface of the steel beam 200 so that one side edge 120 of the flat connecting head plate 100 is fixed along the installation line 210 of the steel beam 200;

[0063] The designated portion 130 on one side edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210;

[0064] The remaining part of one side edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210;

[0065] There are at least two bending lines 110, and the set part 130 is the edge 120 of the flat connecting head plate 100 between two adjacent bending lines 110.

[0066] In the fixing method of this embodiment, multiple through holes 140 of the flat connecting head plate 100 are first drilled before welding using a pre-drilling method, thereby enabling drilling of a large batch of flat connecting head plates 100. This improves the production efficiency of the flat connecting head plates 100. Furthermore, it avoids the overall efficiency of the flat connecting head plate 100 installation and fixing that would be affected by drilling after welding. Then, multiple bends are performed on the flat connecting head plate 100 using a cold pressing method, thereby improving bending efficiency. This method is particularly suitable for bending large batches of flat connecting head plates 100, and the cold pressing method prevents deformation and springback of the bent flat connecting head plate 100, ensuring the bending quality. Moreover, by drawing multiple bending lines 110 in the early stages and bending along the corresponding bending lines 110, the accuracy of the cold pressing bending of the flat connecting head plate 100 is ensured. Then, installation lines 210 are marked on the surface of the steel beam 200, and these installation lines 210 are used as the reference for fixing the bent flat connecting plate 100, which facilitates positioning and ensures accurate positioning of the bent flat connecting plate 100. Next, the edge 120 of one side of the flat connecting plate 100 between two adjacent bending lines 110 is first welded to the steel beam 200 at the corresponding installation line 210. Using this as the reference and starting position for welding, the remaining part of the edge 120 of the bent flat connecting plate 100 is then welded to the steel beam 200 at the corresponding installation line 210. This completes the multiple bends of the bridge flat connecting plate 100 and fixes it to the steel beam 200. This method is particularly suitable for bending a large number of flat connecting plates 100 and quickly and accurately fixing them to the steel beam 200.

[0067] Next, after welding and fixing the remaining portion of one side edge 120 of the bent flat connecting head plate 100 to the steel beam 200 at the corresponding installation line 210, the bent flat connecting head plate 100 has at least two bending lines 110, and the designated portion 130 is the side edge 120 of the flat connecting head plate 100 between two adjacent bending lines 110. This results in the bent flat connecting head plate 100 forming at least three plate surface structures that are not on the same plane. This allows the ends of the I-shaped members 300 that intersect in different directions to be smoothly connected to these non-plane plate surface structures, and the side edge 120 of the bent flat connecting head plate 100 is connected to the steel beam 200. This achieves accurate connection between the steel beam 200 and multiple I-shaped members 300 that intersect in different directions. This satisfies the requirement that the flat connecting head plate 100 can be connected to multiple I-shaped members 300 that intersect at different angles, and also requires that the flat connecting head plate 100 be reliably connected to the steel beam 200.

[0068] This solves the problem of low fixing efficiency of the flat connecting head plate 100 to the steel beam 200 and I-beam 300 in existing steel truss bridges.

[0069] It should be noted that the I-shaped member 300 mentioned in this embodiment can be an I-beam, or other rod-shaped or beam-shaped structural members with an "I"-shaped cross-section.

[0070] See Figures 1 to 4 Furthermore, after welding and fixing the designated portion 130 in one edge 120 of the bent flat connecting head plate 100 to the steel beam 200 at the corresponding mounting line 210, the process also includes:

[0071] Compare the overlap between the remaining portion of one edge 120 of the bent flat connector plate 100 and the corresponding mounting line 210;

[0072] Based on the overlap, determine whether to use fire straightening to correct the deformation of the flat connecting head plate 100 so that one edge 120 of the flat connecting head plate 100 coincides with the installation line 210 at the steel beam 200.

[0073] The pyrotechnic correction here can also be called pyrotechnic adjustment.

[0074] See Figures 1 to 4 Furthermore, based on the overlap, determining whether the deformation of the flat connecting head plate 100 needs to be corrected by fire straightening includes:

[0075] If the remaining part of one side edge 120 of the bent flat connecting head plate 100 does not coincide with the corresponding installation line 210, the deformed part of the flat connecting head plate 100 shall be straightened by fire.

[0076] If the remaining part of one side edge 120 of the bent flat connecting head plate 100 coincides with the corresponding installation line 210, then the remaining part of one side edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210.

[0077] See Figures 1 to 4 Furthermore, if the remaining portion of one edge 120 of the bent flat connecting head plate 100 does not coincide with the corresponding mounting line 210, then the deformation of the flat connecting head plate 100 during heat straightening includes:

[0078] Firework straightening of the flat connecting head plate 100, and real-time monitoring of the deviation between the remaining part of one side edge 120 of the flat connecting head plate 100 and the corresponding installation line 210;

[0079] When the remaining portion of the edge 120 on one side of the flat connecting head plate 100 coincides with the corresponding mounting line 210, stop the fire-working straightening of the flat connecting head plate 100.

[0080] The remaining part of one edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210.

[0081] Taking advantage of the portability of flame straightening, after the designated portion 130 of one side edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210, the flat connecting head plate 100 can be directly straightened on the construction site. Furthermore, the installation line 210 marked on the surface of the steel beam 200 serves as a reference line for flame straightening the flat connecting head plate 100. During the flame straightening process, the deviation between the remaining portion of one side edge 120 of the flat connecting head plate 100 and the corresponding installation line 210 is monitored in real time. Flame straightening of the flat connecting head plate 100 is stopped when the remaining portion of one side edge 120 of the flat connecting head plate 100 coincides with the corresponding installation line 210. Finally, one side edge 120 of the flat connecting head plate 100 is fixed along the steel beam 200 at the installation line 210. This makes the operation very simple and does not rely heavily on the technical experience of the operators who perform the fire-forming straightening of the flat connecting head plate 100. This allows operators who have received basic training to perform the above method, as long as one side edge 120 of the flat connecting head plate 100 is finally fixed along the steel beam 200 at the installation line 210.

[0082] In addition, the flat connecting plate 100 is straightened by flame, and the deviation between the remaining part of one edge 120 of the flat connecting plate 100 and the corresponding installation line 210 is checked in real time. This allows for real-time monitoring of the deformation of the flat connecting plate 100. When the flat connecting plate 100 is found to be about to exceed the deviation of the installation line 210, the flame straightening is stopped immediately to ensure accurate alignment.

[0083] See Figures 1 to 4 Furthermore, if the remaining portion of one edge 120 of the bent flat connector head plate 100 does not coincide with the corresponding mounting line 210, then the deformation of the flat connector head plate 100 after heat straightening includes:

[0084] Use a board to fix the part of the flat connecting head plate 100 that has undergone fire straightening treatment;

[0085] The remaining part of one side edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210 by spot welding.

[0086] Remove the horse board.

[0087] The heat-straightened portion of the flat connecting plate 100 is fixed using a bracing plate to prevent springback deformation after heat straightening. Then, spot welding is used to weld the remaining portion of one edge 120 of the bent flat connecting plate 100 to the corresponding steel beam 200 at the mounting line 210, thus preventing deformation of the flat connecting plate 100 during welding. Furthermore, spot welding allows for initial overall fixing of the flat connecting plate 100 and the steel beam 200, enabling rapid welding and preventing localized springback of the flat connecting plate 100 due to delayed welding.

[0088] See Figures 1 to 4 Furthermore, drilling holes in the flat connector head plate 100 using the pre-drilling method includes:

[0089] Based on the unfolded diagram of the flat connecting head plate 100, mark the drilling positions on the surface of the flat connecting head plate 100.

[0090] Drill holes on the surface of the flat connecting head plate 100 according to the drilling position markings;

[0091] The unfolded view of the flat connecting head plate 100 is a drawing based on the shape of the flat connecting head plate 100 before bending.

[0092] Based on the drawing of the shape of the flat connecting head plate 100 before bending, mark the drilling positions on the surface of the flat connecting head plate 100 to ensure the accuracy of the drilling positions. This, in turn, ensures accurate drilling.

[0093] See Figures 1 to 4 Furthermore, drawing multiple bending lines 110 on the surface of the flat connecting head plate 100 includes:

[0094] Based on the unfolded diagram of the flat connecting head plate 100, draw multiple bending lines 110 on the surface of the flat connecting head plate 100.

[0095] Based on the shape of the flat connecting head plate 100 before bending, multiple bending lines 110 are drawn on the surface of the flat connecting head plate 100. Ensuring the accuracy of the bending lines 110 ensures the precision of subsequent bending positions. This, in turn, ensures accurate end-to-end connection between the flat connecting head plate 100 and the multiple intersecting I-beam members 300.

[0096] See Figures 1 to 4 Furthermore, there are multiple flat connecting head plates 100, and the multiple flat connecting head plates 100 have the same shape;

[0097] The method of drilling holes in the flat connector head plate 100 using the pre-drilling method includes:

[0098] Drilling positions are marked on the surface of a flat connecting head plate 100;

[0099] Multiple flat connecting head plates 100 of the same shape are stacked into a pile, and the sides of the multiple flat connecting head plates 100 in the pile are aligned.

[0100] Place the flat connecting head plate 100 marked with the drilling position on top of a stack of multiple flat connecting head plates 100;

[0101] Using a drilling device, drill holes downwards from the marked drilling position on the flat connector head plate 100 into a stack of multiple flat connector head plates 100.

[0102] Multiple identical flat connecting head plates 100 are stacked together, with their sides aligned. A flat connecting head plate 100 marked with a drilling position is placed at the top of the stack. Using this marked position as a drilling reference, drilling equipment starts drilling downwards from the marked position onto the stack of flat connecting head plates 100. This improves drilling efficiency, allowing the drilling equipment to perform drilling operations on the stack of flat connecting head plates 100 in a single feed. This increases the efficiency of batch drilling.

[0103] See Figures 1 to 4 Furthermore, after welding and fixing the remaining portion of one edge 120 of the bent flat connecting head plate 100 to the steel beam 200 at the corresponding mounting line 210, the process also includes:

[0104] Check the fixed flat connector plate 100 for any warping or deformation.

[0105] Fireworks are used to straighten warped or deformed areas.

[0106] By inspecting the fixed flat connecting plate 100 for warping or deformation and then hot-working correcting any warped or deformed areas, the shape and structure of each part of the flat connecting plate 100 can be smoothly connected to the ends of the corresponding I-beams 300. This ensures a firm connection between the flat connecting plate 100 and the ends of the I-beams 300, preventing stress concentration caused by the simultaneous compression of the I-beams 300 and the steel beam 200 at the warped or deformed parts of the flat connecting plate 100, which could reduce its lifespan and lead to cracks or breakage.

[0107] See Figures 1 to 4 Furthermore, after the heat treatment straightens the warped and deformed parts, the process also includes:

[0108] Repeat the above steps to fix the steel beam 200 at the same side edge 120 of the two bent flat connecting head plates 100 along their respective mounting lines 210, and make the two fixed flat connecting head plates 100 parallel to each other.

[0109] The ends of multiple I-shaped rods 300 are connected to multiple different areas of each fixed flat connecting head plate 100;

[0110] The multiple different regions are defined by the multiple bending lines 110 dividing the flat connecting head plate 100 into multiple different regions.

[0111] The flat connecting head plate 100 here can be two, arranged vertically at a distance, and the entire flat connecting head plate 100 can be arranged horizontally. This allows the upper and lower crossbeams at the ends of the I-shaped member 300 to connect to the corresponding upper and lower flat connecting head plates 100, thereby ensuring a firm connection between the I-shaped member 300 and the steel beam 200.

[0112] See Figure 5 In summary, the complete steps of the fixing method for the bridge flat connector end plate in this embodiment include:

[0113] S110. Based on the unfolded view of the flat connecting head plate 100, mark the drilling positions on the surface of the flat connecting head plate 100.

[0114] S120. Drill holes on the surface of the flat connecting head plate 100 according to the drilling position markings;

[0115] S200. Based on the unfolded view of the flat connecting head plate 100, draw multiple bending lines 110 on the surface of the flat connecting head plate 100.

[0116] S300, Use cold pressing to bend the flat connecting head plate 100 along the corresponding bending line 110;

[0117] S400, Mark the installation line 210 on the surface of the steel beam 200 so that one side edge 120 of the flat connecting head plate 100 is fixed along the installation line 210 of the steel beam 200;

[0118] S500, Weld and fix the set part 130 in the edge 120 of the bent flat connecting head plate 100 to the steel beam 200 at the corresponding installation line 210.

[0119] S610. Compare the overlap between the remaining part of one side edge 120 of the bent flat connecting head plate 100 and the corresponding installation line 210.

[0120] S620. If the remaining portion of one edge 120 of the bent flat connector plate 100 does not coincide with the corresponding mounting line 210, then the deformed portion of the flat connector plate 100 shall be straightened by flame straightening, including:

[0121] S621. Fire straighten the flat connecting head plate 100 and check the deviation between the remaining part of the edge 120 on one side of the flat connecting head plate 100 and the corresponding installation line 210 in real time.

[0122] S622. When the remaining part of the edge 120 on one side of the flat connecting head plate 100 coincides with the corresponding mounting line 210, stop the fire-working straightening of the flat connecting head plate 100.

[0123] S623. Use a mounting plate to fix the part of the flat connecting head plate 100 that has undergone fire straightening treatment;

[0124] S624. Use spot welding to weld and fix the remaining part of one side edge 120 of the bent flat connecting head plate 100 to the steel beam 200 at the corresponding installation line 210.

[0125] S625, Remove the mounting plate.

[0126] S630. If the remaining part of one side edge 120 of the bent flat connecting head plate 100 coincides with the corresponding installation line 210, then the remaining part of one side edge 120 of the bent flat connecting head plate 100 is welded and fixed to the steel beam 200 at the corresponding installation line 210.

[0127] S710. Check whether the fixed flat connector plate 100 has any warped or deformed parts.

[0128] S720, Fire-based straightening of warped and deformed parts.

[0129] S810. Repeat steps S110 to S720 above to fix the steel beam 200 at the same side edge 120 of the two bent flat connecting head plates 100 along their respective mounting lines 210, and make the two fixed flat connecting head plates 100 parallel to each other.

[0130] S820, Connect the ends of multiple I-shaped rods 300 to multiple different areas of each fixed flat connecting head plate 100;

[0131] There are at least two bending lines 110, and the designated part 130 is the edge 120 of one side of the flat connecting head plate 100 between two adjacent bending lines 110; the unfolded view of the flat connecting head plate 100 is a drawing based on the shape of the flat connecting head plate 100 before bending; the multiple different regions are multiple different regions divided by the multiple bending lines 110 of the flat connecting head plate 100.

[0132] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A method of securing a bridge flat coupling joint plate, characterized by, The method comprises the following steps: drilling holes in a flat joint plate (100) by using a pre-hole method; drawing a plurality of bending lines (110) on the surface of the flat joint plate (100); bending the flat joint plate (100) along the corresponding bending lines (110) by using a cold pressing method; marking an installation line (210) on the surface of a steel beam (200) so that one side edge (120) of the flat joint plate (100) is fixed along the steel beam (200) at the installation line (210); welding a set position (130) in the one side edge (120) of the bent flat joint plate (100) to the steel beam (200) at the corresponding installation line (210); welding the remaining position in the one side edge (120) of the bent flat joint plate (100) to the steel beam (200) at the corresponding installation line (210); wherein the bending lines (110) are at least two, and the set position (130) is the one side edge (120) of the flat joint plate (100) between the adjacent two bending lines (110).

2. The method for securing bridge flat coupling joint plates according to claim 1, characterized in that, After the welding of the set position (130) in the one side edge (120) of the bent flat joint plate (100) to the steel beam (200) at the corresponding installation line (210), the method further comprises the following steps: comparing the coincidence of the remaining position in the one side edge (120) of the bent flat joint plate (100) with the corresponding installation line (210); judging whether to correct the deformation of the flat joint plate (100) by using a firework according to the coincidence so that the one side edge (120) of the flat joint plate (100) coincides with the installation line (210) at the steel beam (200).

3. The method for securing bridge flat coupling joint plates of claim 2, wherein, The judging whether to correct the deformation of the flat joint plate (100) by using a firework according to the coincidence comprises the following steps: if the remaining position in the one side edge (120) of the bent flat joint plate (100) does not coincide with the corresponding installation line (210), then correcting the deformation of the flat joint plate (100) by using a firework; if the remaining position in the one side edge (120) of the bent flat joint plate (100) coincides with the corresponding installation line (210), then welding the remaining position in the one side edge (120) of the bent flat joint plate (100) to the steel beam (200) at the corresponding installation line (210).

4. The method for securing bridge flat coupling joint plates of claim 3, wherein, The correcting the deformation of the flat joint plate (100) by using a firework if the remaining position in the one side edge (120) of the bent flat joint plate (100) does not coincide with the corresponding installation line (210) comprises the following steps: correcting the flat joint plate (100) by using a firework and checking the deviation between the remaining position in the one side edge (120) of the flat joint plate (100) and the corresponding installation line (210) in real time; stopping the explosive correction of the flat joint plate (100) when the remaining part of the one side edge (120) of the flat joint plate (100) after bending coincides with the corresponding installation line (210); welding and fixing the steel beam (200) at the remaining part of the one side edge (120) of the flat joint plate (100) after bending and the corresponding installation line (210) by spot welding.

5. The method of securing a flat strap bridge joint plate of claim 3, wherein, If the remaining part of the one side edge (120) of the flat joint plate (100) after bending does not coincide with the corresponding installation line (210), the method further comprises: fixing the part of the flat joint plate (100) after the explosive correction by using a clamp; welding and fixing the steel beam (200) at the remaining part of the one side edge (120) of the flat joint plate (100) after bending and the corresponding installation line (210) by spot welding; removing the clamp.

6. The method of securing a flat strap bridge plate joint according to claim 1, wherein, The method of drilling holes in the flat joint plate (100) by using the first-hole method comprises: drawing a drilling position mark on the surface of the flat joint plate (100) according to the development drawing of the flat joint plate (100); drilling holes on the surface of the flat joint plate (100) according to the drilling position mark. The development drawing of the flat joint plate (100) is a drawing according to the shape of the flat joint plate (100) before bending.

7. The method of securing a flat strap bridge joint plate of claim 6, wherein, The method of drawing a plurality of bending lines (110) on the surface of the flat joint plate (100) comprises: drawing a plurality of bending lines (110) on the surface of the flat joint plate (100) according to the development drawing of the flat joint plate (100).

8. The fixing method for the flat joint plate of a bridge according to any one of claims 1 to 7, wherein: the flat joint plate (100) is a plurality of flat joint plates (100) and the shapes of the plurality of flat joint plates (100) are the same; the method of drilling holes in the flat joint plate (100) by using the first-hole method comprises: marking a drilling position on the surface of one of the flat joint plates (100); stacking the plurality of flat joint plates (100) with the same shape and aligning the side edges of the plurality of flat joint plates (100) in the stack; placing the flat joint plate (100) with the marked drilling position at the top end of the stack of the plurality of flat joint plates (100); drilling holes in the plurality of flat joint plates (100) in the stack from the flat joint plate (100) with the marked drilling position by using a drilling device.

9. The method for securing a bridge flat coupling joint plate according to any one of claims 1 to 7, characterized in that, The method further comprises: checking whether the fixed flat joint plate (100) has a warped deformation position; correcting the warped deformation position by using an explosive.

10. The fixing method for the flat joint plate of a bridge according to claim 9, wherein: the method of correcting the warped deformation position by using an explosive further comprises: The step of welding and fixing the steel beam (200) at the remaining part of the side edge (120) of the bent flat joint plate (100) to the corresponding installation line (210) is repeated by using the first hole method to make holes in the flat joint plate (100), so that the same side edge (120) of two bent flat joint plates (100) is fixed along the steel beam (200) at the corresponding installation line (210), and the fixed two flat joint plates (100) are arranged in parallel with each other; The end of the multiple I-shaped rods (300) is connected to multiple different regions of each fixed flat joint plate (100); Wherein, the multiple different regions are multiple different regions divided by multiple bending lines (110) on the flat joint plate (100).

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