Large-pre-deviation suspension bridge assembly type grating assembly

Abstract

The invention discloses an assembly type grating assembly of a large pre-deviation suspension bridge. The assembly type grating assembly of the large pre-deviation suspension bridge comprises a grating body, a first grating unit and a second grating unit. A plurality of evenly-distributed pouring holes are formed in the front face of the grille body, transverse rib plates are arranged on the periphery of the side face of each pouring hole, a mounting groove is formed in the right side of the grille body, and at least one first grille unit and at least one second grille unit are sequentially arranged in the mounting groove. The first grille unit is connected with the transverse rib plate on the grille body through a fixing bolt, the right side of the first grille unit is connected with the left side of the second grille unit through a fixing bolt, the second grille unit is connected with the transverse rib plate on the grille body through a fixing bolt, and a reaction frame is arranged at the left end of the front face of the grille body. The device does not interfere with the movement of the main cable.

Description

Technical Field

[0001] The invention relates to an improvement in grid component technology, belongs to the field of suspension bridges, and in particular to an assembled grid component for a large pre-biased suspension bridge. Background Art

[0002] The empty cable shape of the main cable of a suspension bridge is quite different from the line shape of the completed bridge. When the main cable saddle is installed, its initial position is generally pre-biased to the side span by a certain distance. The cable saddle is moved on the grid reaction frame by pushing, and the main cable span is changed, thereby adjusting the main cable force on both sides of the tower and the horizontal inclination of the main cable, eliminating or reducing the imbalance of the horizontal force of the main cables on both sides, and ensuring that the main tower of the suspension bridge is always in a safe stress state during the hoisting of the stiffening beam. When the cable saddle is initially installed, it needs to be pre-biased to the side span by a certain distance according to the design requirements. During normal installation, the main The cable will not come into contact with the grid assembly in the pushing direction. When the pre-bias is larger than normal, the height of the grid assembly becomes higher, and the relative position of the grid assembly and the main cable also becomes higher. The main cable is usually arranged in an inclined state, and its position during installation or adjustment will maintain a safe distance from the grid assembly. However, when the height of the grid assembly increases due to the increase in pre-bias, the two originally separated ones will come into contact, causing the edge of the lower support plate to rub against the main cable. The lower support plate will interfere with the movement of the main cable, affecting normal installation.

[0003] A Chinese patent application with application number CN202311361825.1 and application date July 31, 2023 discloses a suspension bridge catwalk saddle structure assembly, which at least includes a main saddle grid reaction frame, a tower top portal frame, a second saddle and a suspension bridge catwalk; the main saddle grid reaction frame is provided with two pairs on the left and right; the second saddle is provided with four, and the four second saddles are divided into two groups, and the two groups of second saddles are symmetrically arranged on both sides of the suspension bridge catwalk and connected to the portal column foot of the tower top portal frame; The second rotating cable saddle includes a second rotating cable saddle support seat and a second rotating cable saddle body, and the second rotating cable saddle body is connected to the column foot of the tower top portal frame through the second rotating cable saddle support seat; it also includes a first rotating cable saddle; two of the first rotating cable saddles are arranged; the two first rotating cable saddles are symmetrically arranged on both sides of the catwalk of the suspension bridge, and are respectively connected to the outer sides of the two main cable saddle grid reaction frames. The above scheme makes the linear shape of the catwalk consistent with the linear shape of the main cable, which is convenient for the construction of the main cable, but does not solve the problem that the grid assembly will interfere with the movement of the main cable.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of this patent application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the problem in the prior art that a large pre-bias will interfere with the movement of the main cable, and to provide a large pre-bias suspension bridge assembled grid assembly that will not interfere with the movement of the main cable when the pre-bias is large.

[0006] To achieve the above objectives, the technical solution of the present invention is: a large pre-deflection suspension bridge assembled grid assembly, the large pre-deflection suspension bridge assembled grid assembly comprising a grid body, a first grid unit, and a second grid unit; The front of the grille body is provided with a plurality of evenly distributed casting holes, and transverse rib plates are provided around the sides of each casting hole. A mounting groove is provided on the right side of the grille body, and at least one first grille unit and a second grille unit are sequentially arranged in the mounting groove. The first grille unit is connected to the transverse rib plate on the grille body by fixing bolts, the right side of the first grille unit is connected to the left side of the second grille unit by fixing bolts, and the second grille unit is connected to the transverse rib plate on the grille body by fixing bolts. A reaction frame is provided at the left end of the front side of the grille body.

[0007] The grille body includes an upper panel, a lower panel and a mounting plate, the upper panel and the lower panel are connected by a plurality of first vertical plates, the bottom of the upper panel is connected to the top of the mounting plate, the bottom of the mounting plate is connected to the top of the lower panel, and the mounting plate is arranged between the two middle first vertical plates; The mounting plate is provided with a plurality of groups of first bolt connection holes distributed in a rectangular shape, a first positioning hole is provided at the center of each group of first bolt connection holes on the mounting plate, two adjacent mounting plates are positioned by a pin passing through the first positioning hole, and two adjacent mounting plates are fixed by bolts threadedly engaging with the first bolt connection holes.

[0008] The bottom of the upper panel is connected to the top of the side panel, the bottom of the side panel is connected to the top of the lower panel, and the side of the mounting plate is connected to the side of the side panel; The side plate is provided with a plurality of groups of second bolt connection holes distributed in a rectangular shape, and a second positioning hole is provided at the center of each group of second bolt connection holes on the side plate.

[0009] The first grille unit includes a first upper plate and a first lower plate; The bottom of the first upper plate is connected to the tops of the three first combined plates, the bottoms of the three first combined plates are connected to the top of the first lower plate, and a first connecting rib plate is provided between two adjacent first combined plates; Each first assembly plate is provided with a plurality of groups of first mounting holes distributed in a rectangular shape, and a first positioning hole is installed at the center of each group of first mounting holes.

[0010] The top of the first connecting rib plate is connected to the bottom of the first upper plate, and the bottom of the first connecting rib plate is connected to the top of the first lower plate.

[0011] Two first connecting side panels are installed between the front and back sides of the first upper panel and the first lower panel, and the side surfaces of each first connecting side panel are respectively connected to the corresponding first combined panel; A first partition plate is arranged between the two first connection side plates. The first connection side plates are provided with a plurality of groups of third bolt holes distributed in a rectangular shape. A third positioning hole is provided at the center of each group of third bolt holes on the first connection side plates.

[0012] The top of the first partition plate is connected to the bottom of the first upper plate, and the bottom of the first partition plate is connected to the top of the first lower plate.

[0013] The second grille unit includes a second upper plate and a second lower plate; The bottom of the second upper plate is connected to the tops of the three second combined plates, the bottoms of the three second combined plates are connected to the top of the second lower plate, and a second connecting rib plate is provided between two adjacent second combined plates; Each second assembly plate is provided with a plurality of groups of second mounting holes distributed in a rectangular shape, and a second positioning hole is installed at the center of each group of second mounting holes.

[0014] Two second connecting side panels are installed between the front and back sides of the second upper panel and the second lower panel, and the left side of the second connecting side panel on the left side is connected to the second combined panel on the left side; A second partition plate is arranged between the two second connecting side plates. The second connecting side plates are provided with a plurality of groups of fourth bolt holes distributed in a rectangular shape. A fourth positioning hole is provided at the center of each group of fourth bolt holes on the second connecting side plates.

[0015] The second connecting side plate on the right side is connected to the concave plate, and an open groove is provided on the right side of the concave plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the assembled grid assembly of a large pre-biased suspension bridge of the present invention, a plurality of evenly distributed casting holes are arranged on the front of the grid body, and transverse rib plates are arranged around the sides of each casting hole. An installation groove is opened on the right side of the grid body, and at least one first grid unit and a second grid unit are arranged in sequence in the installation groove. The first grid unit is connected to the transverse rib plate on the grid body by fixing bolts, the right side of the first grid unit is connected to the left side of the second grid unit by fixing bolts, and the second grid unit is connected to the transverse rib plate on the grid body by fixing bolts. When applied: after the installation and casting of the grid main structure is completed, the cable saddle is installed in place according to the designed initial position, and the main cable is erected. During the installation of the cable, even if the pre-bias between the main cable and the grid body is large, due to the setting of the installation groove on the right side of the grid body, sufficient installation space is left, so that the main cable will not contact the grid body along the pushing direction when the position is adjusted. After the main cable is installed, the first grid unit and the second grid unit are correspondingly embedded in the position in the installation groove, and then the first grid unit is aligned with the grid body, and then fixed by bolts, and then the left end of the second grid unit is aligned with the first grid unit, and then the bolt assembly is used to fix the joint surfaces, and the grid body is split and formed. After the main cable construction is completed, the split grid is assembled and formed, so as not to interfere with the movement of the main cable. Therefore, the present invention will not interfere with the movement of the main cable.

[0017] 2. In the prefabricated grid assembly of a suspension bridge with large pre-bias, the lower bearing plate for installing the saddle of the suspension bridge with large pre-bias is split and formed, so that the forming structure of each grid unit is small and can be independently manufactured, transported and installed; the adjacent grid units are arranged according to the designed positions and connected to form an integral assembly through locking bolts, etc., which effectively meets the technical requirements for on-site installation of the saddle of the suspension bridge, reduces the difficulty of on-site manufacturing, is conducive to improving the efficiency of on-site installation, and is more suitable for the construction requirements of the suspension bridge with large pre-bias. Therefore, the present invention improves the installation efficiency and is simple to manufacture.

[0018] 3. In the prefabricated grid assembly of a suspension bridge with a large pre-biased amount of the present invention, the second grid unit includes a second upper plate and a second lower plate, the bottom of the second upper plate is connected to the top of three second combination plates, the bottom of the three second combination plates is connected to the top of the second lower plate, and a second connecting rib plate is arranged between two adjacent second combination plates. When used: the first combination plate and the second combination plate are aligned and installed, first positioned by positioning pins, and then the two combination plates are fixed by bolts. At the same time, the length of the upper plate and the lower plate can be increased according to the use requirements, and the number of the upper plate and the lower plate can be superimposed, which is more convenient. Therefore, the present invention increases the actual use length according to the use requirements, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a top view of the present invention.

[0021] Figure 3 It is a right side view of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the installation slot in the present invention.

[0023] Figure 5 The present invention Figure 4 Bottom view of .

[0024] Figure 6 The present invention Figure 4 Right view of .

[0025] Figure 7 It is a structural schematic diagram of the first grid unit in the present invention.

[0026] Figure 8 It is a right side view of the first grid unit in the present invention.

[0027] Fig. 9 It is a bottom view of the first grid unit in the present invention.

[0028] Fig.10 It is a structural schematic diagram of the second grid unit in the present invention.

[0029] Fig.11 It is a right side view of the second grid unit in the present invention.

[0030] Fig.12 It is a bottom view of the second grid unit in the present invention.

[0031] In the figure: grille body 1, upper panel 11, lower panel 12, mounting plate 13, first bolt connection hole 131, first positioning hole 132, side plate 14, second bolt connection hole 141, second positioning hole 142, fixing bolt 2, transverse rib plate 3, first grille unit 4, first upper plate 41, first lower plate 42, first connecting rib plate 43, first combination plate 44, first positioning hole 45, first mounting hole 46, first connecting side plate 47, third bolt hole 471, third positioning hole 472, first partition plate 48, second grille unit 5, second upper plate 51, second lower plate 52, second connecting rib plate 53, second combination plate 54, second positioning hole 55, second mounting hole 56, second connecting side plate 57, fourth bolt hole 571, fourth positioning hole 58, second partition plate 59, concave plate 591, opening groove 592, mounting groove 6, casting hole 7, reaction frame 8. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] See also Figures 1 to 12 , a large pre-deflection suspension bridge assembled grid assembly, the large pre-deflection suspension bridge assembled grid assembly comprising a grid body 1, a first grid unit 4, and a second grid unit 5; The front of the grid body 1 is provided with a plurality of evenly distributed casting holes 7, and transverse rib plates 3 are arranged around the sides of each casting hole 7. A mounting groove 6 is opened on the right side of the grid body 1, and at least one first grid unit 4 and a second grid unit 5 are sequentially arranged in the mounting groove 6. The first grid unit 4 is connected to the transverse rib plate 3 on the grid body 1 by a fixing bolt 2, the right side of the first grid unit 4 is connected to the left side of the second grid unit 5 by a fixing bolt 2, and the second grid unit 5 is connected to the transverse rib plate 3 on the grid body 1 by a fixing bolt 2. A reaction frame 8 is provided at the left end of the front side of the grid body 1.

[0034] The grille body 1 includes an upper panel 11, a lower panel 12 and a mounting plate 13. The upper panel 11 and the lower panel 12 are connected by a plurality of first vertical plates 9. The bottom of the upper panel 11 is connected to the top of the mounting plate 13, and the bottom of the mounting plate 13 is connected to the top of the lower panel 12. The mounting plate 13 is arranged between the two middle first vertical plates 9. The mounting plate 13 is provided with a plurality of groups of first bolt connection holes 131 distributed in a rectangular shape. A first positioning hole 132 is provided at the center of each group of first bolt connection holes 131 on the mounting plate 13. Two adjacent mounting plates 13 are positioned by a pin passing through the first positioning hole 132, and two adjacent mounting plates 13 are fixed by bolts threadedly engaging with the first bolt connection holes 131.

[0035] The bottom of the upper panel 11 is connected to the top of the side panel 14, the bottom of the side panel 14 is connected to the top of the lower panel 12, and the side of the mounting plate 13 is connected to the side of the side panel 14; The side plate 14 is provided with a plurality of groups of second bolt connection holes 141 distributed in a rectangular shape, and a second positioning hole 142 is provided at the center of each group of second bolt connection holes 141 on the side plate 14 .

[0036] The first grille unit 4 includes a first upper plate 41 and a first lower plate 42; The bottom of the first upper plate 41 is connected to the tops of the three first combined plates 44, the bottoms of the three first combined plates 44 are connected to the top of the first lower plate 42, and a first connecting rib plate 43 is provided between two adjacent first combined plates 44; Each first assembly plate 44 is provided with a plurality of groups of first mounting holes 46 distributed in a rectangular shape, and a first positioning hole 45 is installed at the center of each group of first mounting holes 46 .

[0037] The top of the first connecting rib plate 43 is connected to the bottom of the first upper plate 41 , and the bottom of the first connecting rib plate 43 is connected to the top of the first lower plate 42 .

[0038] Two first connecting side panels 47 are installed between the front and back sides of the first upper panel 41 and the first lower panel 42, and the side surfaces of each first connecting side panel 47 are respectively connected to the corresponding first assembly panel 44; A first partition plate 48 is disposed between the two first connection side plates 47 . The first connection side plates 47 are provided with a plurality of groups of third bolt holes 471 distributed in a rectangular shape. A third positioning hole 472 is provided at the center of each group of third bolt holes 471 on the first connection side plates 47 .

[0039] The top of the first partition plate 48 is connected to the bottom of the first upper plate 41 , and the bottom of the first partition plate 48 is connected to the top of the first lower plate 42 .

[0040] The second grille unit 5 includes a second upper plate 51 and a second lower plate 52; The bottom of the second upper plate 51 is connected to the tops of the three second combined plates 54, the bottoms of the three second combined plates 54 are connected to the tops of the second lower plate 52, and a second connecting rib plate 53 is provided between two adjacent second combined plates 54; Each second assembly plate 54 is provided with a plurality of groups of second mounting holes 56 distributed in a rectangular shape, and a second positioning hole 55 is installed at the center of each group of second mounting holes 56 .

[0041] Two second connecting side plates 57 are installed between the front and back sides of the second upper plate 51 and the second lower plate 52, and the left side of the second connecting side plate 57 on the left side is connected to the second combined plate 54 on the left side; A second partition plate 59 is disposed between the two second connecting side plates 57 . The second connecting side plates 57 are provided with a plurality of groups of fourth bolt holes 571 distributed in a rectangular shape. A fourth positioning hole 58 is provided at the center of each group of fourth bolt holes 571 .

[0042] The second connecting side plate 57 on the right side is connected to the concave plate 591 , and an opening groove 592 is formed on the right side of the concave plate 591 .

[0043] The supplementary description of the present invention is as follows: The grid structure used for installing the saddle of a large pre-biased suspension bridge is formed into separate parts, so that each grid unit can be manufactured, transported and installed independently; the grid parts are arranged according to the designed positions and combined into an integral structure by positioning pins and locking bolts, and the strength of the formed structure is not affected by the separation.

[0044] Embodiment 1: A prefabricated grid assembly for a suspension bridge with a large pre-bias, the prefabricated grid assembly for a suspension bridge with a large pre-bias comprises a grid body 1, a first grid unit 4, and a second grid unit 5; a plurality of evenly distributed casting holes 7 are arranged on the front of the grid body 1, and transverse rib plates 3 are arranged around the sides of each casting hole 7; a mounting groove 6 is opened on the right side of the grid body 1, and at least one first grid unit 4 and a second grid unit 5 are arranged in sequence in the mounting groove 6; the first grid unit 4 is connected to the transverse rib plate 3 on the grid body 1 by a fixing bolt 2, the right side of the first grid unit 4 is connected to the left side of the second grid unit 5 by a fixing bolt 2, and the second grid unit 5 is connected to the transverse rib plate 3 on the grid body 1 by a fixing bolt 2; a reaction frame 8 is arranged on the left end of the front side of the grid body 1.

[0045] When in use: the grid assembly is divided into a reaction frame 8 part and a grid body 1 part according to its function. The reaction frame 8 provides a support point for jacking; the grid body 1 serves as the load support point for the entire bridge and is welded from steel plates. A rope notch is provided near the middle of the tail, namely, an installation groove 6, which serves as a passage during the installation of the main cable. Bolt connection holes and positioning pin holes are provided around the installation groove 6 for fixing other grid units.

[0046] Embodiment 2: Embodiment 2 is substantially the same as Embodiment 1, except that: The grille body 1 comprises an upper panel 11, a lower panel 12 and a mounting plate 13. The upper panel 11 and the lower panel 12 are connected by a plurality of first vertical plates 9. The bottom of the upper panel 11 is connected to the top of the mounting plate 13, and the bottom of the mounting plate 13 is connected to the top of the lower panel 12. The mounting plate 13 is arranged between the two middle first vertical plates 9. The mounting plate 13 is provided with a plurality of groups of first bolt connection holes 131 distributed in a rectangular shape. A first positioning hole 132 is provided at the center of each group of first bolt connection holes 131 on the mounting plate 13. Two adjacent mounting holes 131 are connected to each other. The mounting plates 13 are positioned by a pin passing through the first positioning hole 132, and two adjacent mounting plates 13 are fixed by bolts threadedly fitting with the first bolt connection holes 131; the bottom of the upper panel 11 is connected to the top of the side panel 14, the bottom of the side panel 14 is connected to the top of the lower panel 12, and the side of the mounting plate 13 is connected to the side of the side panel 14; the side panel 14 is provided with a plurality of groups of second bolt connection holes 141 distributed in a rectangular shape, and a second positioning hole 142 is provided on the side panel 14 at the center of each group of second bolt connection holes 141.

[0047] When used: the upper panel 11 is a finely processed surface, the upper panel 11 and the lower panel 12 are both provided with casting holes 13, and the upper panel 11 and the lower panel 12 are connected by grid-like longitudinal and transverse bars.

[0048] Embodiment 3: Embodiment 3 is substantially the same as Embodiment 2, except that: The first grille unit 4 includes a first upper plate 41 and a first lower plate 42; the bottom of the first upper plate 41 is connected to the tops of three first combination plates 44, the bottoms of the three first combination plates 44 are connected to the top of the first lower plate 42, and a first connecting rib plate 43 is provided between two adjacent first combination plates 44; each first combination plate 44 is provided with a plurality of groups of first mounting holes 46 distributed in a rectangular shape, and a first positioning hole 45 is installed at the center of each group of first mounting holes 46; the top of the first connecting rib plate 43 is connected to the bottom of the first upper plate 41, and the bottom of the first connecting rib plate 43 is connected to the top of the first lower plate 42 Two first connecting side panels 47 are installed between the front and back sides of the first upper plate 41 and the first lower plate 42, and the side surfaces of each first connecting side panel 47 are respectively connected to the corresponding first combined plate 44; a first partition panel 48 is arranged between the two first connecting side panels 47, and a plurality of groups of third bolt holes 471 distributed in a rectangular shape are provided on the first connecting side panel 47, and a third positioning hole 472 is provided on the first connecting side panel 47 at the center of each group of third bolt holes 471; the top of the first partition panel 48 is connected to the bottom of the first upper plate 41, and the bottom of the first partition panel 48 is connected to the top of the first lower plate 42.

[0049] When in use: align the first positioning hole 45 on the first combined plate 44 on the left side with the corresponding first positioning hole 132 on the mounting plate 13, insert the positioning pin, align the first combined plate 44 with the mounting plate 13, the first upper plate 411 and the upper panel 11 are in the same plane, the first lower plate 412 and the lower panel 12 are in the same plane, then the first positioning hole 45 and the first bolt connection hole 131 are fixed by bolts, and then the first combined plate 44 on the right side is fixed between the upper panel 11 and the lower panel 12. According to the above method, the installation of the first connecting side plate 47 is completed accordingly, thereby completing the installation of the first grille unit 4.

[0050] Embodiment 4: Embodiment 4 is substantially the same as Embodiment 1, except that: The second grille unit 5 includes a second upper plate 51 and a second lower plate 52; The second grille unit 5 includes a second upper plate 51 and a second lower plate 52; the bottom of the second upper plate 51 is connected to the tops of three second combination plates 54, the bottoms of the three second combination plates 54 are connected to the tops of the second lower plate 52, and a second connecting rib plate 53 is arranged between two adjacent second combination plates 54; each second combination plate 54 is provided with a plurality of groups of second mounting holes 56 distributed in a rectangular shape, and a second positioning hole 55 is installed at the center of each group of second mounting holes 56; the front and back surfaces of the second upper plate 51 and the second lower plate 52 are connected to each other. Two second connecting side plates 57 are installed between them, and the left side of the second connecting side plate 57 on the left is connected to the second combination plate 54 on the left; a second partition plate 59 is arranged between the two second connecting side plates 57, and a plurality of groups of fourth bolt holes 571 distributed in a rectangular shape are provided on the second connecting side plate 57, and a fourth positioning hole 58 is provided at the center of each group of fourth bolt holes 571 on the second connecting side plate 57; the second connecting side plate 57 on the right is connected to the concave plate 591, and an opening groove 592 is provided on the right side of the concave plate 591.

[0051] When in use: align the second positioning hole 55 of the left second combination plate 54 with the first positioning hole 45 of the first combination plate 44 on the right side of the first grille unit 4, and then insert the positioning pin to align the second combination plate 54 with the first combination plate 44, the first upper plate 411 and the second upper plate 511 are in the same plane, the first lower plate 412 and the second lower plate 512 are in the same plane, and then the first positioning hole 45 and the second mounting hole 56 are fixed by bolts, and then the second combination plate 54 on the right side is fixed between the second upper plate 511 and the second lower plate 512. According to the above method, the installation of the second connecting side plate 57 is completed accordingly, thereby completing the installation of the second grille unit 4.

[0052] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A pre-deflected suspension bridge assembled grid assembly, Features: The large pre-deflection suspension bridge assembled grid assembly comprises a grid body (1), a first grid unit (4), and a second grid unit (5); The front of the grille body (1) is provided with a plurality of evenly distributed casting holes (7), and a transverse rib plate (3) is provided around the sides of each casting hole (7). A mounting groove (6) is provided on the right side of the grille body (1), and at least one first grille unit (4) and a second grille unit (5) are sequentially arranged in the mounting groove (6). The first grille unit (4) is connected to the transverse rib plate (3) on the grille body (1) via a fixing bolt (2), the right side of the first grille unit (4) is connected to the left side of the second grille unit (5) via a fixing bolt (2), and the second grille unit (5) is connected to the transverse rib plate (3) on the grille body (1) via a fixing bolt (2). A reaction frame (8) is provided at the left end of the front of the grille body (1).

2. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 1, Features: The grille body (1) comprises an upper panel (11), a lower panel (12) and a mounting plate (13); the upper panel (11) and the lower panel (12) are connected via a plurality of first vertical plates (9); the bottom of the upper panel (11) is connected to the top of the mounting plate (13); the bottom of the mounting plate (13) is connected to the top of the lower panel (12); and the mounting plate (13) is arranged between two middle first vertical plates (9); The mounting plate (13) is provided with a plurality of groups of first bolt connection holes (131) distributed in a rectangular shape, and a first positioning hole (132) is provided at the center of each group of first bolt connection holes (131) on the mounting plate (13). Two adjacent mounting plates (13) are positioned by a pin passing through the first positioning hole (132), and the two adjacent mounting plates (13) are fixed by bolts threadedly engaging with the first bolt connection holes (131).

3. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 2, Features: The bottom of the upper panel (11) is connected to the top of the side panel (14), the bottom of the side panel (14) is connected to the top of the lower panel (12), and the side of the mounting plate (13) is connected to the side of the side panel (14); The side plate (14) is provided with a plurality of groups of second bolt connection holes (141) distributed in a rectangular shape, and a second positioning hole (142) is provided at the center of each group of second bolt connection holes (141) on the side plate (14).

4. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 1, Features: The first grille unit (4) comprises a first upper plate (41) and a first lower plate (42); The bottom of the first upper plate (41) is connected to the tops of the three first combined plates (44), the bottoms of the three first combined plates (44) are connected to the top of the first lower plate (42), and a first connecting rib plate (43) is provided between two adjacent first combined plates (44); Each first combination plate (44) is provided with a plurality of groups of first mounting holes (46) distributed in a rectangular shape, and a first positioning hole (45) is installed at the center of each group of first mounting holes (46).

5. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 4, Features: The top of the first connecting rib plate (43) is connected to the bottom of the first upper plate (41), and the bottom of the first connecting rib plate (43) is connected to the top of the first lower plate (42).

6. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 5, Features: Two first connecting side panels (47) are installed between the front and back sides of the first upper panel (41) and the first lower panel (42), and the side surfaces of each first connecting side panel (47) are respectively connected to the corresponding first assembly panel (44); A first partition plate (48) is provided between the two first connection side plates (47). The first connection side plates (47) are provided with a plurality of groups of third bolt holes (471) distributed in a rectangular shape. A third positioning hole (472) is provided at the center of each group of third bolt holes (471) on the first connection side plates (47).

7. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 6, Features: The top of the first partition plate (48) is connected to the bottom of the first upper plate (41), and the bottom of the first partition plate (48) is connected to the top of the first lower plate (42).

8. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 1, Features: The second grille unit (5) comprises a second upper plate (51) and a second lower plate (52); The bottom of the second upper plate (51) is connected to the tops of the three second combined plates (54), the bottoms of the three second combined plates (54) are connected to the top of the second lower plate (52), and a second connecting rib plate (53) is provided between two adjacent second combined plates (54); Each second combination plate (54) is provided with a plurality of groups of second mounting holes (56) distributed in a rectangular shape, and a second positioning hole (55) is installed at the center of each group of second mounting holes (56).

9. The assembled grid assembly for a large pre-deflection suspension bridge according to claim 8, Features: Two second connecting side panels (57) are installed between the front and back sides of the second upper panel (51) and the second lower panel (52), and the left side of the left second connecting side panel (57) is connected to the left second assembly panel (54); A second partition plate (59) is provided between the two second connection side plates (57). The second connection side plates (57) are provided with a plurality of groups of fourth bolt holes (571) distributed in a rectangular shape. A fourth positioning hole (58) is provided at the center of each group of fourth bolt holes (571) on the second connection side plates (57).

10. The assembled grid assembly of a large pre-deflection suspension bridge according to claim 9, Features: The second connecting side plate (57) on the right side is connected to the concave plate (591), and an opening groove (592) is provided on the right side of the concave plate (591).

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