A segment splicing method for large cross-section steel tower bridge

Abstract

The present application relates to the technical field of bridge, and provide a kind of segment splicing method for large section steel tower bridge, comprising: using long line method to weld multiple front side plate, bottom web, intermediate web, rear side plate and baffle into multiple first box body, and make multiple first anchor box installation cavities in each first box body;With first set measurement datum, multiple first anchor box is correspondingly welded in corresponding first anchor box installation cavity;Multiple first top web is correspondingly welded on the first box body, to splice into multiple first segment;Wherein, the first segment is all single-box double-chamber structure.Guarantee the consistency of multiple first anchor box relative to multiple single-box double-chamber structure first segment, to sufficiently reduce the assembly error between segment, reduce the adjustment time of assembly error in stage, to reduce the segment manufacturing and splicing time of large section steel tower bridge, reduce the corresponding cost.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, and more specifically, to a segmental splicing method for large-section steel tower bridges. 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] On the other hand, existing large-section steel tower bridges are generally constructed by splicing multiple segments together. However, since the segments are generally constructed by splicing them one by one on site, especially the segments of single-box double-cell structures, the construction efficiency of the segments is low, and the assembly error between segments is large. It is necessary to adjust the assembly error at each stage, resulting in huge manufacturing and splicing costs for the segments. Summary of the Invention

[0004] The present invention aims to solve the problem of the huge cost of segment manufacturing and splicing of existing large-section steel tower bridges.

[0005] To address the above problems, this invention provides a segmental splicing method for large-section steel tower bridges, comprising:

[0006] Multiple front side plates, bottom web plates, middle web plates, rear side plates and partitions are welded into multiple first boxes using the long line method, and multiple first anchor box mounting cavities are formed in each first box.

[0007] Using a first set measurement benchmark, multiple first anchor boxes are welded one-to-one into the corresponding first anchor box mounting cavity;

[0008] Multiple first top web plates are welded one-to-one onto the first box body so that multiple first box bodies are spliced ​​into corresponding multiple first segments;

[0009] The first segment is a single-box double-chamber structure.

[0010] Optionally, the step of welding multiple front side plates, bottom web plates, middle web plates, rear side plates, and partitions into multiple first boxes using the long-line method with a first set measurement reference includes:

[0011] Multiple front side plates, bottom web plates, middle web plates, rear side plates and partitions are welded onto the first frame to form N first boxes, and N-1 first boxes are connected in sequence, with the Nth first box and the N-1th first box being arranged adjacent to each other.

[0012] After welding the multiple top and web plates one-to-one onto the first box body, the process further includes:

[0013] Transfer the Nth first box to the second rack;

[0014] On the second frame, with the Nth first box as the reference, the front side plate, bottom web plate, middle web plate, rear side plate and partition of M second segments are welded to form M second boxes, and the Nth first box is sequentially connected to the M-1 second boxes, and the Mth second box is adjacent to the M-1 second box, while forming multiple second anchor box mounting cavities in each second box;

[0015] A second set measurement benchmark is established based on the first anchor box in the Nth first box;

[0016] According to the second set measurement benchmark, multiple second anchor boxes are welded into the second anchor box mounting cavities of the corresponding M second boxes;

[0017] Multiple second top web plates are welded one-to-one onto the second box body to form multiple second segments;

[0018] The second section is a single-box double-chamber structure.

[0019] Optionally, the step of welding N first segments of front side plates, bottom web plates, middle web plates, rear side plates and partitions on the first frame to form N-1 first boxes connected in sequence can be achieved by using multiple support plates to connect the N-1 first boxes.

[0020] Optionally, after welding N first segments of front side plates, bottom web plates, middle web plates, rear side plates, and partitions onto the first frame to form N-1 sequentially connected first boxes, the method further includes:

[0021] Weld the N-1 sequentially connected first box bodies;

[0022] Remove the multiple horse plates between the N-1 sequentially connected first boxes.

[0023] Optionally, the step of welding multiple front side plates, bottom web plates, middle web plates, rear side plates, and partitions into multiple first boxes using the long-line method, and forming multiple first anchor box mounting cavities within each first box, includes:

[0024] Multiple bottom and web plates are laid sequentially on the first frame, and positioning lines for the front side plate, middle web plate, rear side plate, and multiple partitions of the first segment are marked on the multiple bottom and web plates respectively.

[0025] According to the positioning lines of the partition, multiple partitions are positioned and welded on the bottom web plate to form a first row of partition groups;

[0026] According to the positioning lines of the intermediate web, the intermediate web is positioned and welded to the bottom web;

[0027] According to the positioning lines of the partition, multiple partitions are positioned and welded on the bottom web plate to form a second row of partitions, and the middle web plate is placed between the first row of partitions and the second row of partitions.

[0028] According to the positioning lines of the front side plate, the front side plate is positioned and welded to the bottom web plate, and the first row of partition plates is placed between the front side plate and the middle web plate.

[0029] According to the positioning lines of the rear side plate, the rear side plate is positioned and welded to the bottom web plate, and the second row of partition plates is placed between the middle web plate and the rear side plate.

[0030] Optionally, before welding the plurality of first anchor boxes one by one into the corresponding first anchor box mounting cavity based on the first set measurement reference, the method further includes welding the first anchor boxes.

[0031] Welding the first anchor box includes:

[0032] Two side webs, two stiffening plates and a pressure plate are welded together, and the two side webs and two stiffening plates form an anchor pipe housing space, with the pressure plate covering the two side webs and two stiffening plates.

[0033] The anchor pipe is welded into the anchor pipe housing space;

[0034] The anchor plate is placed on the bearing plate and welded to the anchor pipe.

[0035] Optionally, welding the two side webs, two stiffening plates, and the bearing plate together includes:

[0036] Draw two stiffening plate mounting lines on the same side surface of one of the side webs;

[0037] Draw two mounting lines for the side webs on the surface of the bearing plate;

[0038] According to the two stiffening plate installation lines, the two stiffening plates are positioned and welded at a distance to the same side plate surface of one side web plate;

[0039] According to the stiffening plate installation line, the bearing plate, one of the side web plates and two of the stiffening plates are positioned and welded together;

[0040] Weld the seam between the bearing plate and one of the side web plates;

[0041] Weld the two stiffening plates, the bearing plate, and one of the side web plates;

[0042] Draw the two stiffening plate mounting lines on the same side surface of the other side web;

[0043] Position weld the other side web plate and the two stiffening plates;

[0044] Weld the two stiffening plates, the pressure plate and the other side web plate.

[0045] Optionally, after welding the two side webs, two stiffening plates, and the bearing plate together, the process further includes:

[0046] The two flanges are welded to the bottom of the corresponding side webs.

[0047] Optionally, the step of welding the plurality of first anchor boxes one-to-one into the corresponding first anchor box mounting cavity based on the first set measurement reference includes:

[0048] Based on the first set measurement benchmark, use a total station to mark the corresponding anchoring points and anchor installation system lines in the first anchor box and the first anchor box installation cavity, respectively.

[0049] According to the anchoring points and anchor box installation system lines, multiple first anchor boxes are installed one by one in the corresponding first anchor box installation cavities;

[0050] Detect and ensure that the dimensions of each of the first anchor boxes are consistent;

[0051] Weld the weld between each of the first anchor boxes and the bottom web plate.

[0052] Optionally, welding the plurality of first top web plates one-to-one onto the first box body includes:

[0053] Multiple first top web plates are fixedly welded to the corresponding first box body one by one;

[0054] Weld the three seams between the front side plate, the middle web plate, and the rear side plate and the first top web plate;

[0055] Weld the first anchor box and the first top web plate together inside the first box;

[0056] Weld the first anchor boxes to the corresponding front and rear side plates.

[0057] Compared with the prior art, the present invention has the following technical effects:

[0058] When assembling segments of a large-section steel tower bridge using the segmental splicing method of this invention, multiple front side plates, bottom web plates, middle web plates, rear side plates, and diaphragms are welded into multiple first box bodies using a long-line method. This allows multiple first box bodies of the first segments to be spliced ​​simultaneously, improving segment manufacturing efficiency and ensuring consistency in the positioning of the multiple first box bodies. In particular, it ensures consistency in the positioning of the corresponding first anchor box installation cavities during the splicing of multiple first box bodies, thereby guaranteeing the welding accuracy of the subsequent welding of the first anchor boxes into their respective installation cavities and reducing assembly errors of the multiple first segments. More importantly, by welding multiple first anchor boxes one-to-one into their corresponding installation cavities using a first set measurement benchmark, the consistency of the multiple first anchor boxes relative to the multiple single-box double-cell structure first segments is ensured, significantly reducing assembly errors between segments and minimizing adjustment time for stage assembly errors. This reduces the segment manufacturing and splicing time of large-section steel tower bridges, thus lowering the corresponding costs. This solves the problem of the high cost of segment manufacturing and splicing for existing large-section steel tower bridges. Attached Figure Description

[0059] Figure 1 This is a schematic flowchart illustrating the main steps of the segmental splicing method for large-section steel tower bridges of the present invention;

[0060] Figure 2 This is a schematic diagram of the process of welding multiple first boxes using the long-wire method in this invention;

[0061] Figure 3 This is a schematic flowchart of the segmental splicing method for large-section steel tower bridges according to the present invention;

[0062] Figure 4 This is a schematic diagram of the process of welding multiple first anchor boxes one-to-one into the corresponding first anchor box mounting cavity according to the present invention.

[0063] Figure 5 This is a schematic diagram of the process of welding multiple first top web plates onto the first box body in a one-to-one correspondence according to the present invention.

[0064] Figure 6 This is a schematic diagram of the welding steps for the first anchor box according to the present invention;

[0065] Figure 7 This is a schematic perspective view of the first segment splicing process in an embodiment of the present invention;

[0066] Figure 8 This is another schematic perspective view of the first segment splicing process in an embodiment of the present invention;

[0067] Figure 9 This is another schematic perspective view of the first segment splicing process in an embodiment of the present invention;

[0068] Figure 10 This is a schematic perspective view of the first anchor box splicing process in an embodiment of the present invention;

[0069] Figure 11 This is another schematic perspective view of the first anchor box splicing process in an embodiment of the present invention;

[0070] Figure 12 This is another schematic perspective view of the first anchor box splicing process in an embodiment of the present invention;

[0071] Figure 13 This is a schematic diagram of N first boxes being welded and assembled on a first jig in an embodiment of the present invention;

[0072] Figure 14 This is a schematic diagram of the welding and assembly of the Nth first box and the Mth second box on the second jig in an embodiment of the present invention.

[0073] Explanation of reference numerals in the attached drawings: 100, first segment; 110, front side plate; 120, bottom web plate; 130, middle web plate; 140, rear side plate; 150, partition plate; 160, first anchor box; 170, first top web plate; 180, first anchor box mounting cavity; 200, second segment; 210, second anchor box; 300, first jig; 400, second jig; 500, first set measurement reference; 600, second set measurement reference; 710, side web plate; 720, stiffening plate; 730, bearing plate; 740, flange plate; 750, anchor plate; 760, anchor pipe; 770, anchor pipe housing space. Detailed Implementation

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 (that is, the direction the arrow points to) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down; the Y-axis represents the front-back direction; and the X-axis represents the left-right direction. 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.

[0079] See Figures 1 to 14 To address the aforementioned technical problems, this embodiment provides a segmental splicing method for large-section steel tower bridges, comprising:

[0080] S100. Using the long-line method, the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140 and partition plate 150 of multiple first segments 100 are welded into multiple first boxes, and multiple first anchor box mounting cavities 180 are formed in each first box.

[0081] S200, using the first set measurement reference 500, weld the multiple first anchor boxes 160 one by one into the corresponding first anchor box mounting cavity 180;

[0082] S300. Weld multiple first top web plates 170 one by one onto the first box body to splice them into multiple first segments 100.

[0083] The first section 100 consists of a single-box double-chamber structure.

[0084] When assembling segments of a large-section steel tower bridge using the segmental splicing method of the present invention, the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140, and diaphragm 150 of multiple first segments 100 are welded into multiple first box bodies using the long-line method. This allows for the simultaneous splicing of multiple first box bodies from multiple first segments 100, improving segment manufacturing efficiency and ensuring consistency in the splicing and positioning of multiple first box bodies. In particular, it ensures the consistency in the splicing and positioning of the corresponding first anchor box mounting cavities 180 during the splicing of multiple first box bodies, thereby guaranteeing the subsequent first anchor... The welding precision of the first anchor box 160 welded into the corresponding first anchor box mounting cavity 180 reduces the assembly error of multiple first segments 100. More importantly, by welding multiple first anchor boxes 160 one-to-one into their respective first anchor box mounting cavities 180 using a first set measurement benchmark 500, the consistency of multiple first anchor boxes 160 relative to multiple single-box double-cell structure first segments 100 is ensured. This significantly reduces the assembly error between segments, reduces the adjustment time for stage assembly errors, and thus reduces the segment manufacturing and splicing time of large-section steel tower bridges, thereby reducing the corresponding cost. This solves the problem of the huge cost of segment manufacturing and splicing of existing large-section steel tower bridges.

[0085] See Figure 1 , Figures 3 to 14 Furthermore, S100, using the long-line method with a first set measurement reference 500, welding the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140, and partition plate 150 of multiple first segments 100 into multiple first boxes includes:

[0086] S110, Multiple front side plates 110, bottom web plates 120, middle web plates 130, rear side plates 140 and partition plates 150 are welded on the first jig 300 to form N-1 first boxes connected in sequence, with the Nth first box being adjacent to the N-1th first box.

[0087] S300, after welding multiple top and web plates one-to-one onto the first housing, also includes:

[0088] S410, Transfer the Nth first box to the second frame 400;

[0089] S420, On the second frame 400, with the Nth first box as the reference, the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140 and partition plate 150 of the M second segments 200 are welded into M second boxes, and the Nth first box is sequentially connected to the M-1 second boxes, and the Mth second box is adjacent to the M-1 first box, while forming multiple second anchor box 210 mounting cavities in each second box;

[0090] S430. Establish a second set measurement benchmark 600 based on the first anchor box 160 in the Nth first box;

[0091] S440. According to the second set measurement reference 600, weld multiple second anchor boxes 210 into the installation cavity of the second anchor box 210 of the corresponding M second boxes;

[0092] S450. Weld multiple second top web plates one by one onto the second box body to splice them into multiple second segments 200.

[0093] The second section 200 is a single-box double-chamber structure.

[0094] The second segment 200 and the first segment 100 can have the same structure, only the dimensions of the first segment 100 and the second segment 200 are different. Similarly, the first box and the second box can also have the same structure, only the dimensions of the first box and the second box are different.

[0095] Here, N can be at least 3, and M can be at least 2.

[0096] By welding the front side plates 110, bottom web plates 120, middle web plates 130, rear side plates 140, and partition plates 150 of N first segments 100 into N-1 sequentially connected first boxes, the assembly accuracy of the N-1 sequentially connected first boxes is improved. Meanwhile, on the second jig 400, using the Nth first box as a reference, the front side plates 110, bottom web plates 120, middle web plates 130, rear side plates 140, and partition plates 150 of M second segments 200 are welded into M second boxes, which on the one hand improves... This improves both the assembly efficiency and accuracy of the M second boxes, particularly by ensuring the sequential connection of the Nth first box with the M-1th second box. Furthermore, the simultaneous assembly of the Nth first box with the N-1th sequentially connected first boxes on the first jig 300 further enhances the assembly accuracy of the subsequent N-1th first boxes and the M-1th second boxes. This also significantly improves the consistency between the corresponding first anchor box mounting cavity 180 and the second anchor box 210 mounting cavity.

[0097] Furthermore, a second set measurement benchmark 600 is established based on the first anchor box 160 in the Nth first box. Based on the second set measurement benchmark 600, multiple second anchor boxes 210 are welded into the installation cavities of the second anchor boxes 210 in the corresponding M second boxes. This fully ensures the consistency of the assembly of the first anchor boxes 160 in the N first segments 100 and the second anchor boxes 210 in the M second segments 200. The consistency of the anchor boxes in the multiple segments during the splicing process is the key to reducing the assembly error between segments. In this way, through the above operations, the goal of minimizing the assembly error between segments is achieved.

[0098] It should be noted that the phrase "the Mth second box is arranged adjacent to the M-1th first box" is used to weld the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140 and partition plate 150 of L third segments into L-1 sequentially connected third boxes on the third frame. The specific steps can be found in S410 to S450.

[0099] See Figure 1 , Figures 3 to 14 Furthermore, in S110, the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140 and partition plate 150 of N first segments 100 are welded on the first frame 300 to form N-1 first boxes connected in sequence, and the N-1 first boxes are connected by multiple horse plates.

[0100] See Figure 1 and Figure 3 Furthermore, S110, after welding the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140 and partition plate 150 of N first segments 100 onto the first frame 300 to form N-1 sequentially connected first boxes, also includes:

[0101] S121. Weld the weld between N-1 sequentially connected first boxes;

[0102] S122. Remove the multiple support plates between the N-1 sequentially connected first boxes.

[0103] In this embodiment, N-1 first boxes are temporarily connected using a connecting plate, which enables the first boxes to be connected during the manufacturing process, improving the assembly efficiency of the N-1 first segments 100. Then, using this as the connection positioning reference for the N-1 first segments 100, welds are made between the N-1 sequentially connected first boxes. Finally, the multiple connecting plates between the N-1 sequentially connected first boxes are removed, thereby improving the docking accuracy of the N-1 first segments 100.

[0104] See Figure 2Furthermore, S100, welding the front side plate 110, bottom web plate 120, middle web plate 130, rear side plate 140 and partition plate 150 of multiple first segments 100 into multiple first boxes using the long-line method, and forming multiple first anchor box mounting cavities 180 in each first box, includes the following steps:

[0105] S111. Lay multiple bottom web plates 120 sequentially on the first frame 300, and mark the positioning lines of the front side plate 110, middle web plate 130, rear side plate 140 and partition plate 150 of the first segment 100 on the multiple bottom web plates 120 respectively.

[0106] S112. According to the positioning lines of the partition 150, multiple partitions 150 are positioned and welded on the bottom web plate 120 to form the first row of partitions.

[0107] S113. According to the positioning lines of the intermediate web 130, the intermediate web 130 is positioned and welded to the bottom web 120.

[0108] S114. According to the positioning lines of the partition 150, multiple partitions 150 are positioned and welded on the bottom web plate 120 to form a second row of partitions, and the middle web plate 130 is placed between the first row of partitions and the second row of partitions.

[0109] S115. According to the positioning lines of the front side plate 110, the front side plate 110 is positioned and welded to the bottom web plate 120, and the first row of partitions is placed between the front side plate 110 and the middle web plate 130.

[0110] S116. According to the positioning lines of the rear side plate 140, the rear side plate 140 is positioned and welded to the bottom web plate 120, and the second row of partitions is placed between the middle web plate 130 and the rear side plate 140.

[0111] It should be noted that the long-line method here refers to assembling multiple first boxes simultaneously on the first jig 300. For example, after performing step S111 on N first boxes, step S112 is performed on N first boxes, step S113 is performed on N first boxes, step S114 is performed on N first boxes, step S115 is performed on N first boxes, and finally step S116 is performed on N first boxes, thereby completing the welding and assembly of multiple first boxes using the long-line method.

[0112] In this way, by using the long-line method to weld and assemble multiple first boxes step by step according to the aforementioned steps S111 to S116, the multiple first boxes are welded and assembled synchronously. This allows each step in the aforementioned steps S111 to S116 to be repeated N times continuously. With each repetition, the proficiency of each step is improved, making the efficiency of each step repeated N times continuously higher than the efficiency of steps S111 to S116 performed in assembling the first boxes one by one. This increases the assembly speed of the multiple first boxes.

[0113] Furthermore, multiple first boxes are welded and assembled step by step according to the positioning lines of the corresponding front side plate 110, middle web plate 130, rear side plate 140 and partition plate 150. This ensures the consistency of the synchronous assembly of multiple first boxes, improves the accuracy of the synchronous assembly of the first boxes, and enhances the assembly quality of the first boxes.

[0114] See Figure 6 Furthermore, before welding the multiple first anchor boxes 160 one-to-one into the corresponding first anchor box mounting cavity 180 with the first set measurement reference 500, S200 also includes welding the first anchor boxes 160.

[0115] S500, welding the first anchor box 160 includes:

[0116] S510. Weld the two side web plates 710, the two stiffening plates 720 and the pressure plate 730 together, and make the two side web plates 710 and the two stiffening plates 720 form an anchor pipe housing space 770, and make the pressure plate 730 cover the two side web plates 710 and the two stiffening plates 720.

[0117] S520. Weld the anchor pipe 760 into the anchor pipe receiving space 770;

[0118] S530. Place the anchor plate 750 on the bearing plate 730 and weld the anchor plate 750 to the anchor pipe 760.

[0119] It should be noted that the welding of the first anchor box 160 in S500 can also be performed before "S100 welding multiple front side plates 110, bottom web plates 120, middle web plates 130, rear side plates 140 and partition plates 150 into multiple first boxes" using the long line method, as long as it can satisfy "S200 welding multiple first anchor boxes 160 one by one into the corresponding first anchor box mounting cavity 180 with the first set measurement reference 500".

[0120] See Figure 6 Furthermore, S510 welds the two side web plates 710, the two stiffening plates 720, and the bearing plate 730 together, including:

[0121] S511. Draw two stiffening plate installation lines on the same side surface of a side web 710;

[0122] S512. Draw two side web plate installation lines on the surface of the bearing plate 730;

[0123] S513. Based on the installation lines of the two stiffening plates, weld the two stiffening plates 720 at intervals to the same side plate surface of a side web plate 710.

[0124] S514. According to the stiffening plate installation line, position and weld the bearing plate 730, one side web plate 710 and two stiffening plates 720 together.

[0125] S515, the weld between the pressure plate 730 and a side web plate 710;

[0126] S516, Weld the seam between two stiffening plates 720, a bearing plate 730 and a side web plate 710;

[0127] S517. Draw two stiffening plate installation lines on the same side surface of the other side web 710;

[0128] S518. Position weld the other side web plate 710 and the two stiffening plates 720;

[0129] S519, Weld the seam between the two stiffening plates 720, the bearing plate 730 and the other side web plate 710.

[0130] By using various different installation lines, the accuracy of welding each first anchor box 160 was ensured. This method of splicing improved the efficiency of the first anchor box 160 assembly.

[0131] See Figure 6 Furthermore, after welding the two side web plates 710, the two stiffening plates 720, and the bearing plate 730 together, S510 also includes:

[0132] S5101 welds two flanges 740 to the bottom of the corresponding side web 710.

[0133] S5101 is used to further prevent deformation at the bottom of the side web plate 710, thereby improving the structural stability of the first anchor box 160.

[0134] It should be noted that the bearing plate 730 is located on top of the two side web plates 710 and the two stiffening plates 720, while the two flange plates 740 are welded to the bottom of the corresponding side web plates 710.

[0135] The two side web plates 710 are arranged in parallel, while the two stiffening plates 720 are arranged in parallel, with the two stiffening plates 720 sandwiched between the two side web plates 710.

[0136] A through hole is provided on the surface of the pressure plate 730, the anchor pipe 760 is inserted into the through hole, and the anchor plate 750 is placed on the pressure plate 730.

[0137] The first anchor box 160, assembled using the aforementioned S510 to S530, has high structural strength and strong resistance to deformation.

[0138] See Figure 4 Furthermore, S200 welds a plurality of first anchor boxes 160 one-to-one into the corresponding first anchor box mounting cavities 180 using a first set measurement reference 500, including:

[0139] S210. According to the first set measurement benchmark 500, use a total station to mark the corresponding anchoring points and anchor installation system lines in the first anchor box 160 and the first anchor box installation cavity 180 respectively.

[0140] S220. According to the anchoring point and anchor box installation system line, install multiple first anchor boxes 160 one by one in the corresponding first anchor box installation cavity 180.

[0141] S230, inspect and ensure that the dimensions of each first anchor box 160 are consistent;

[0142] S240, Weld the weld between each first anchor box 160 and the bottom web plate 120.

[0143] S220 and S230 improve the installation accuracy of the first anchor box 160. They also improve the fit between the first anchor box 160 and the first housing, and S240 ensures a secure fixation between them. Furthermore, S210 enhances the connection efficiency with S220 and S230. This approach ensures both installation accuracy and improved installation and fixing efficiency of the first anchor box 160, making its installation more convenient.

[0144] See Figure 5 Furthermore, S300 welds multiple first top web plates 170 one-to-one onto the first housing, including:

[0145] S310. The multiple first top web plates 170 are fixedly welded to the corresponding first box body one by one.

[0146] S320, the three welds between the front side plate 110, the middle web plate 130 and the rear side plate 140 and the first top web plate 170.

[0147] S330. Weld the seam between the first anchor box 160 and the first top web plate 170 inside the first box;

[0148] S340, Welding multiple first anchor boxes 160 to the corresponding front side plate 110 and rear side plate 140.

[0149] Through steps S310 to S340, the accuracy of welding and fixing the first top web plate 170 to the first box body is improved, thereby ensuring the stability and reliability of the final process of segment splicing and improving the quality of segment welding.

[0150] 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 segmental splicing method for large-section steel tower bridges, characterized in that, include: Multiple front side plates (110), bottom web plates (120), middle web plates (130), rear side plates (140) and partition plates (150) are welded into multiple first boxes using the long line method, and multiple first anchor box mounting cavities (180) are formed in each of the first boxes. Using a first set measurement reference (500), multiple first anchor boxes (160) are welded one-to-one into the corresponding first anchor box mounting cavity (180); Multiple first top web plates (170) are welded one-to-one onto the first box body so that multiple first boxes are spliced ​​into corresponding multiple first segments (100); The first segment (100) is a single-box double-chamber structure; The method of welding multiple front side plates (110), bottom web plates (120), middle web plates (130), rear side plates (140), and partitions (150) into multiple first boxes using the long-line method includes: On the first frame (300), multiple front side plates (110), bottom web plates (120), middle web plates (130), rear side plates (140) and partition plates (150) are welded into N first boxes, and N-1 first boxes are connected in sequence, with the Nth first box and the N-1th first box being arranged adjacent to each other. After welding the plurality of first top web plates (170) one-to-one onto the first box body, the process further includes: Transfer the Nth first box to the second rack (400); On the second frame (400), with the Nth first box as the reference, the front side plate (110), bottom web plate (120), middle web plate (130), rear side plate (140) and partition plate (150) of M second segments (200) are welded to form M second boxes, and the Nth first box is sequentially connected to the M-1 second boxes, and the Mth second box is adjacent to the M-1 second box, while forming multiple second anchor box mounting cavities in each second box; A second set measurement reference (600) is established based on the first anchor box (160) in the Nth first box; According to the second set measurement reference (600), a plurality of second anchor boxes (210) are welded into the second anchor box mounting cavities of the corresponding M second boxes; Multiple second top web plates are welded one-to-one onto the second box body to splice them into multiple second segments (200); The second section (200) is a single-box double-chamber structure.

2. The segment splicing method according to claim 1, characterized in that, The first box body, which consists of multiple front side plates (110), bottom web plates (120), middle web plates (130), rear side plates (140) and partition plates (150) welded together on the first frame (300) to form N-1 sequentially connected first boxes, is connected by multiple bracing plates.

3. The segment splicing method according to claim 2, characterized in that, After welding multiple front side plates (110), bottom web plates (120), middle web plates (130), rear side plates (140), and partitions (150) into N-1 sequentially connected first boxes on the first frame (300), the method further includes: Weld the N-1 sequentially connected first box bodies; Remove the multiple horse plates between the N-1 sequentially connected first boxes.

4. The segment splicing method according to claim 1, characterized in that, The method of welding multiple front side plates (110), bottom web plates (120), middle web plates (130), rear side plates (140), and partitions (150) into multiple first boxes using a long-line method, and forming multiple first anchor box mounting cavities (180) in each first box, includes: Multiple bottom web plates (120) are laid sequentially on the first frame (300), and the positioning lines of the front side plate (110), middle web plate (130), rear side plate (140) and partition plate (150) of the first segment (100) are marked on the multiple bottom web plates (120); According to the positioning lines of the partition (150), multiple partitions (150) are positioned and welded on the bottom web plate (120) to form a first row of partitions (150). According to the positioning lines of the intermediate web (130), the intermediate web (130) is positioned and welded onto the bottom web (120); According to the positioning lines of the partition (150), multiple partitions (150) are positioned and welded on the bottom web plate (120) to form a second row of partitions (150) group, and the middle web plate (130) is placed between the first row of partitions (150) group and the second row of partitions (150) group. According to the positioning lines of the front side plate (110), the front side plate (110) is positioned and welded to the bottom web plate (120), and the first row of partition plates (150) is placed between the front side plate (110) and the middle web plate (130). According to the positioning lines of the rear side plate (140), the rear side plate (140) is positioned and welded to the bottom web plate (120), and the second row of partition plates (150) is placed between the middle web plate (130) and the rear side plate (140).

5. The segment splicing method according to any one of claims 1 to 4, characterized in that, Before welding the plurality of first anchor boxes (160) one by one into the corresponding first anchor box mounting cavity (180) according to the first set measurement reference (500), the method further includes welding the first anchor boxes (160); Welding the first anchor box (160) includes: Two side web plates (710), two stiffening plates (720), and a bearing plate (730) are welded together, and the two side web plates (710) and the two stiffening plates (720) form an anchor pipe (760) receiving space, and the bearing plate (730) covers the two side web plates (710) and the two stiffening plates (720); Two flanges (740) are welded to the bottom of the corresponding side webs (710); The anchor tube (760) is welded into the space where the anchor tube (760) is housed; Place the anchor plate (750) on the bearing plate (730) and weld the anchor plate (750) to the anchor pipe (760).

6. The segment splicing method according to claim 5, characterized in that, The welding of the two side web plates (710), the two stiffening plates (720), and the bearing plate (730) together includes: Draw the mounting lines of the two stiffening plates (720) on the same side surface of one of the side web plates (710); Draw the mounting lines of the two side webs (710) on the surface of the bearing plate (730); According to the installation lines of the two stiffening plates (720), the two stiffening plates (720) are positioned and welded at intervals to the same side plate surface of the side web plate (710); According to the installation line of the stiffening plate (720), the bearing plate (730), one of the side web plates (710) and two of the stiffening plates (720) are positioned and welded together; Weld the pressure plate (730) and one of the side web plates (710) together; Weld the two stiffening plates (720), the bearing plate (730), and the side web plate (710) together; Draw the mounting lines of the two stiffening plates (720) on the same side surface of the other side web (710); The other side web plate (710) and the two stiffening plates (720) are tack welded together; Weld the two stiffening plates (720), the bearing plate (730) and the other side web plate (710) together.

7. The segment splicing method according to claim 5, characterized in that, The process of welding the two side web plates (710), the two stiffening plates (720), and the bearing plate (730) together further includes: Two flanges (740) are welded to the bottom of the corresponding side webs (710).

8. The segment splicing method according to any one of claims 1 to 4, characterized in that, The step of welding multiple first anchor boxes (160) one-to-one into the corresponding first anchor box mounting cavity (180) using a first set measurement reference (500) includes: Based on the first set measurement benchmark (500), use a total station to mark the corresponding anchoring points and anchor installation system lines in the first anchor box (160) and the first anchor box installation cavity (180), respectively; According to the anchoring point and anchor box installation system line, a plurality of first anchor boxes (160) are installed one by one in the corresponding first anchor box installation cavity (180); Detect and ensure that the dimensions of each of the first anchor boxes (160) are consistent; Weld the weld between each of the first anchor boxes (160) and the bottom web plate (120).

9. The segment splicing method according to claim 8, characterized in that, The step of welding the plurality of first top web plates (170) one-to-one onto the first box body includes: Multiple first top web plates (170) are fixedly welded to the corresponding first box body one by one; Weld the three seams between the front side plate (110), the middle web plate (130) and the rear side plate (140) and the first top web plate (170); Weld the first anchor box (160) and the first top web plate (170) together inside the first box; Weld the first anchor boxes (160) together with the corresponding front side plate (110) and rear side plate (140).

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