A bridge steel box girder installation structure and construction technology

Abstract

The present invention discloses a steel box girder installation structure and construction process for a bridge, and relates to the technical field of steel box girder installation structures; it includes a group of steel box girder modules, and the steel box girder modules include: a top beam plate, a group of linearly distributed first reinforcement frames are provided at the bottom of the top beam plate; a lower beam plate, a group of parallel lower ribs are provided at the top of the lower beam plate; a first vertical beam plate, a second vertical beam plate is provided on both sides of the first vertical beam plate, and the tops of the first vertical beam plate and the second vertical beam plate are both provided with a first reinforcement groove that is compatible with the first reinforcement frame. The present invention can better disassemble and assemble the steel box girder module by providing a detachable steel box girder module, and has strong flexibility; by providing an auxiliary support structure, after the top beam plate and the lower beam plate are installed, by screwing the adjusting screw, the sliding seats on both sides can be driven to move in opposite directions, so that the limit plate is clamped into the groove of the clamping seat, thereby achieving structural reinforcement and improving reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of bridges, and in particular to a bridge steel box girder installation structure and a construction process. Background Art

[0002] The steel box girder assembly structure of bridges is an integral part of modern bridge construction, and its design and construction quality are directly related to the safety, stability, and service life of the bridge. Traditional bridge steel box girder assembly structures often rely on on-site welding or bolting. While these methods can meet engineering requirements to a certain extent, on-site welding or bolting requires a significant amount of manpower and time, resulting in long construction cycles and low efficiency. On-site welding is prone to safety hazards such as high temperatures and sparks, posing a threat to the safety of construction workers. Furthermore, welding quality is significantly affected by the operator's skill level, and defects such as uneven welds, porosity, and slag inclusions are prone to occur, reducing the safety of the structure.

[0003] For example, patent CN110878530A discloses a method for installing a steel box girder for a steel structure bridge, comprising the following steps: Step 1: Design the length and width of each steel box girder section, process the steel box girder into blocks, and transport them to the installation area for standby use; Step 2: Install the steel box girder installation equipment; Step 3: Pre-assemble the steel box girder blocks and weld each steel box girder section into at least two large blocks; Step 4: Transport each large block sequentially to the steel box girder installation location; Step 5: Lift the steel box girder blocks and place them in the installation location using a bridge erection machine; Step 6: Advance the bridge erection machine to the installation location for the next steel box girder section; Step 7: Repeat Steps 3-6 to install the next steel box girder section, connect the joints, and complete the installation of the steel box girder at the end, then remove the steel box girder installation equipment; Step 8: Inspection, and the steel box girder installation of the steel structure bridge is complete. The steel box girder is reinforced by welding, which results in a long construction period and insufficient structural strength. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides a bridge steel box girder installation structure and construction process to achieve the goals of high construction efficiency and firm structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A bridge steel box girder installation structure includes a set of steel box girder modules, wherein the steel box girder modules include:

[0007] A top beam plate, with a group of linearly distributed first reinforcement frames provided at the bottom of the top beam plate;

[0008] A lower beam plate, the top of which is provided with a group of parallel lower ribs;

[0009] A first vertical beam plate, with second vertical beam plates arranged on both sides of the first vertical beam plate, a first reinforcement groove adapted to the first reinforcement frame being provided on the top of the first vertical beam plate and the second vertical beam plate, the first reinforcement groove being a U-shaped structure, a lower clamping groove adapted to the lower rib being provided on the bottom of the first vertical beam plate and the second vertical beam plate, the first vertical beam plate and the second vertical beam plate being installed between the top beam plate and the lower beam plate;

[0010] A reinforcing plate, wherein a first connecting groove is formed on the reinforcing plate, and a second connecting groove is formed on the first vertical beam plate. The reinforcing plate is detachably mounted on the first vertical beam plate through the first connecting groove and the second connecting groove to form a cross-shaped structure. The reinforcing plate is provided with ribs. A socket is formed on the second vertical beam plate. When the second vertical beam plate is installed between the top beam plate and the lower beam plate, the ribs are snapped into the sockets.

[0011] The side beam plate is provided with side ribs on one side of the side beam plate, and the side surfaces of the first vertical beam plate and the second vertical beam plate are both provided with side grooves, and the side beam plate is clamped in the side grooves through the side ribs.

[0012] As a preferred embodiment of the present invention, a first auxiliary support mechanism is provided between the top beam plate and the lower beam plate, and the first auxiliary support mechanism includes:

[0013] A mounting frame is installed in the first reinforcement frame, and an adjusting screw is rotatably installed on the mounting frame, and the threads of the adjusting screw are located on both sides of the mounting frame and rotate in opposite directions;

[0014] A slide seat, the slide seat is slidably connected to the inner wall of the first reinforcement frame, and the slide seat is connected to the outer wall of the adjusting screw by a thread;

[0015] The support frame and the first reinforcement frame have a strip-shaped opening at the bottom, and the support frame slides in the strip-shaped opening;

[0016] The card seat is fixed to the outer wall of the bottom of the support frame, the card seat is slidably connected to the outer wall of the lower rib, a limit plate is fixed on the lower rib, and a groove adapted to the limit plate is opened on the card seat.

[0017] As a preferred embodiment of the present invention, a hinge seat is fixed to one end of the adjusting screw, a positioning rod is hinged on the hinge seat, and an auxiliary fixing portion for fixing the positioning rod is provided on the second vertical beam plate.

[0018] As a preferred embodiment of the present invention, the positioning rod includes:

[0019] A first positioning rod, one end of which is mounted on the hinge seat;

[0020] a second positioning rod, the second positioning rod being slidably connected to the outer wall of the first positioning rod, and the second positioning rod and the first positioning rod being connected via a spring;

[0021] The auxiliary fixing portion includes a positioning tube, which is fixed on the second vertical beam plate, and the diameter of the second positioning rod is adapted to the inner diameter of the positioning tube.

[0022] As a preferred embodiment of the present invention: a distance measuring sensor is installed at the end of the second positioning rod, a standard block is installed in the positioning cylinder, the position of the standard block is adapted to the distance measuring sensor, the steel box girder module also includes a control unit and an alarm unit, and the distance measuring sensor and the alarm unit are both connected to the control unit signal.

[0023] As a preferred embodiment of the present invention: a plurality of reinforcing angle plates are installed on the side of the side beam plate, a plurality of second reinforcing grooves are provided on the top of the reinforcing angle plates, a second reinforcing frame is provided on the bottom of the top beam plate, the second reinforcing grooves are U-shaped structures adapted to the second reinforcing frames, when the reinforcing angle plates are installed on the side of the side beam plate, the second reinforcing frames are inserted into the second reinforcing grooves, and the ends of the reinforcing angle plates on the same side are fixed with the same end plate.

[0024] As a preferred embodiment of the present invention, both the first vertical beam plate and the second vertical beam plate are provided with openings.

[0025] As a preferred embodiment of the present invention, a second auxiliary support mechanism is provided between the top beam plate and the lower beam plate, and the second auxiliary support mechanism includes:

[0026] An upper support column, with a support seat provided on the top of the upper support column, and the support seat is clamped to the outer side of the first reinforcement frame;

[0027] A lower support column, wherein the lower support column and the upper support column are adjustably connected via a threaded adjustment portion, and the threaded adjustment portion is used to adjust the distance between the lower support column and the upper support column;

[0028] Positioning seat: a positioning frame is provided on the top of the lower beam plate, the positioning seat is installed on the outside of the positioning frame, and a locking component is provided on one side of the positioning seat.

[0029] As a preferred embodiment of the present invention, the locking assembly includes:

[0030] A positioning plate, the positioning plate being slidably connected to an inner wall of one side of the positioning seat;

[0031] A guide column is fixed to the outer wall of one side of the lower support column, and a positioning plate is slidably connected to the outer wall of the guide column;

[0032] A threaded knob is rotatably mounted on the lower support column, and a positioning plate is connected to an outer wall of the threaded knob via threads;

[0033] A second protruding tooth is fixed to one end of the positioning plate located in the positioning seat, and a first protruding tooth is provided on one side of the positioning frame, and the second protruding tooth is adapted to the first protruding tooth;

[0034] The positioning frame is in a Y-shaped structure, and the bottom surfaces of the two top ends of the positioning frame are in an inclined surface structure; the end portion of the second protruding tooth is in an inclined surface structure adapted to the inclined surface of the positioning frame.

[0035] As a preferred embodiment of the present invention, the construction process of the bridge steel box girder installation structure includes the following steps:

[0036] S1: Install the first vertical beam plate on the lower beam plate;

[0037] S2: Install the reinforcement plate on the first vertical beam plate to form a cross-shaped structure with the first vertical beam plate;

[0038] S3: Install the top beam plate above the first vertical beam plate so that the first reinforcement groove and the first reinforcement frame are engaged;

[0039] S4: Install the two second vertical beam plates on both sides of the first vertical beam plate so that the ribs are inserted into the sockets;

[0040] S5: Turn the adjusting screw to move the support frame to the specified support position;

[0041] S6: Adjust the position of the positioning rod so that the second positioning rod is inserted into the positioning tube;

[0042] S7: Place the positioning seat outside the positioning frame, adjust it to the specified position, and fix the positioning seat with the threaded knob;

[0043] S8: Adjust the effective lengths of the lower support column and the upper support column so that the support base is securely connected to the outer side of the first reinforcement frame;

[0044] S9: Install the side beam plate on the side of the first vertical beam plate and the second vertical beam plate so that the side ribs are stuck in the side grooves;

[0045] S10: Install the reinforcement angle plate on the side surface of the side beam plate so that the second reinforcement groove is clamped and connected with the second reinforcement frame.

[0046] The beneficial effects of the present invention are:

[0047] 1. The present invention provides a detachable steel box girder module, which can be better disassembled and assembled, and has strong flexibility. By providing an auxiliary support structure, after the top beam plate and the lower beam plate are installed, the sliding seats on both sides can be driven to move in opposite directions by screwing the adjusting screw, so that the limit plate is inserted into the groove of the seat, thereby strengthening the structure and improving reliability.

[0048] 2. The present invention provides a positioning rod and a positioning cylinder. After the hinge seat is screwed, the second positioning rod can be pushed toward the first positioning rod, and after the second positioning rod is aligned with the positioning cylinder, the second positioning rod can be loosened so that the second positioning rod can be smoothly inserted into the positioning cylinder, thereby fixing the angle of the adjusting screw and improving reliability.

[0049] 3. The present invention sets a distance measuring sensor and a standard block. When the structure is deformed under pressure, the detection position of the distance measuring sensor shifts from the standard block, resulting in a change in the detection value. The control unit controls the alarm unit to perform alarm processing based on the detection information fed back by the distance measuring sensor, thereby improving reliability.

[0050] 4. The present invention can enhance the supporting effect on the top beam and ensure the firmness of the structure by setting up reinforcing angle plates, end plates and other structures; by setting up a second auxiliary support mechanism, the position of the structure can be adjusted according to actual conditions, and the position of the positioning seat can be locked by the locking assembly, and the distance between the lower support column and the upper support column can be adjusted by the threaded adjustment part, so that the support seat can be reliably stuck on the outside of the first reinforcement frame to achieve stable support for the top beam.

[0051] 5. The present invention sets a locking assembly, which can control the movement of the positioning plate by rotating the threaded knob after the position adjustment is completed, and then use the second convex tooth to engage with the first convex tooth to fix the structure. Due to the adoption of the inclined surface design, it can better guide the structural connection and locking, thereby improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the installation structure of the bridge steel box girder of the present invention;

[0053] Figure 2 This is a schematic diagram of the structure of a single steel box girder module disassembled according to the present invention;

[0054] Figure 3 Schematic diagram of the structure of the first vertical beam plate and the reinforcement plate of the present invention;

[0055] Figure 4 This is a schematic diagram of the structure of the first vertical beam plate and the reinforcement plate separated according to the present invention;

[0056] Figure 5 This is a schematic cross-sectional view of the positioning tube of the present invention;

[0057] Figure 6 Schematic diagram of the structure of the slide and the adjusting screw of the present invention;

[0058] Figure 7 It is a structural schematic diagram of the positioning frame and the positioning seat of the present invention;

[0059] Figure 8 This is a schematic structural diagram of the positioning seat of the present invention.

[0060] In the picture:

[0061] 1 top beam plate, 2 side beam plate, 3 positioning cylinder, 4 lower beam plate, 5 side ribs, 6 second vertical beam plate, 7 reinforcement angle plate, 8 first reinforcement frame, 9 second reinforcement frame, 10 second reinforcement groove, 11 lower rib, 12 end plate, 13 opening, 14 side groove, 15 support frame, 16 socket, 17 rib, 18 first vertical beam plate, 19 lower support column, 20 reinforcement plate, 21 seat, 22 first reinforcement groove, 23 second positioning rod, 24 first positioning rod, 25 hinge seat, 26 spring, 27 distance sensor, 28 standard block, 29 limit plate, 30 slide seat, 31 upper support column, 32 support seat, 33 adjusting screw, 34 mounting frame, 35 positioning frame, 36 threaded knob, 37 positioning plate, 38 first convex tooth, 39 positioning seat, 40 guide column, 41 second convex tooth. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0063] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0064] The steel box girder installation structure of the bridge is as follows: Figure 1-8 As shown, it includes a plurality of steel box girder modules, and the steel box girder modules include:

[0065] The top beam plate 1 has a plurality of linearly distributed first reinforcement frames 8 arranged at the bottom of the top beam plate 1;

[0066] The lower beam plate 4 has a plurality of parallel lower ribs 11 arranged on the top of the lower beam plate 4;

[0067] A first vertical beam plate 18 is provided with a second vertical beam plate 6 on both sides of the first vertical beam plate 18. The tops of the first vertical beam plate 18 and the second vertical beam plate 6 are both provided with a first reinforcement groove 22 adapted to the first reinforcement frame 8. The first reinforcement groove 22 is a U-shaped structure. The bottoms of the first vertical beam plate 18 and the second vertical beam plate 6 are both provided with a lower clamping groove adapted to the lower rib 11. The first vertical beam plate 18 and the second vertical beam plate 6 are installed between the top beam plate 1 and the lower beam plate 4;

[0068] A reinforcing plate 20 is provided with a first connecting groove, and a second connecting groove is provided on the first vertical beam plate 18. The reinforcing plate 20 is detachably mounted on the first vertical beam plate 18 through the first connecting groove and the second connecting groove to form a cross-shaped structure. A convex rib 17 is integrally provided. A socket 16 is provided on the second vertical beam plate 6. When the second vertical beam plate 6 is installed between the top beam plate 1 and the lower beam plate 4, the convex rib 17 is snapped into the socket 16.

[0069] The side beam plate 2 has side ribs 5 on one side, and the first vertical beam plate 18 and the second vertical beam plate 6 have side grooves 14 on their sides. The side beam plate 2 is clamped in the side grooves 14 through the side ribs 5, and the two side beam plates 2 are arranged in an oblique inverted eight shape.

[0070] To improve structural stability; Figure 3 、 Figure 6 As shown, a first auxiliary support mechanism is provided between the top beam plate 1 and the lower beam plate 4, and the first auxiliary support mechanism includes:

[0071] The mounting frame 34 is installed in the first reinforcement frame 8. The mounting frame 34 is rotatably mounted with an adjusting screw 33. The threads of the adjusting screw 33 on both sides of the mounting frame 34 are rotated in opposite directions.

[0072] The slide 30 is slidably connected to the inner wall of the first reinforcement frame 8 and is threadedly connected to the outer wall of the adjusting screw 33;

[0073] The support frame 15 and the first reinforcement frame 8 have a strip-shaped opening at the bottom, and the support frame 15 slides in the strip-shaped opening;

[0074] The card seat 21 is fixed to the outer wall of the bottom of the support frame 15. The card seat 21 is slidably connected to the outer wall of the lower rib 11. A limit plate 29 is fixed on the lower rib 11. The card seat 21 is provided with a groove adapted to the limit plate 29;

[0075] By setting up a detachable steel box girder module, it can be better disassembled and assembled, and has strong flexibility; by setting up an auxiliary support structure, after the top beam plate 1 and the lower beam plate 4 are installed, by screwing the adjusting screw 33, the slide seats 30 on both sides can be driven to move in opposite directions, so that the limit plate 29 is stuck in the groove of the seat 21, thereby strengthening the structure and improving reliability.

[0076] To improve firmness; Figure 5 As shown, a hinge seat 25 is fixed to one end of the adjusting screw rod 33 , a positioning rod is hinged on the hinge seat 25 , and an auxiliary fixing portion for fixing the positioning rod is provided on the second vertical beam plate 6 .

[0077] In order to facilitate fixation; Figure 5 As shown, the positioning rod comprises:

[0078] A first positioning rod 24, one end of which is mounted on a hinge seat 25;

[0079] A second positioning rod 23, the second positioning rod 23 is slidably connected to the outer wall of the first positioning rod 24, and the second positioning rod 23 and the first positioning rod 24 are connected by a spring 26;

[0080] The auxiliary fixing portion includes a positioning tube 3, which is fixed to the second vertical beam plate 6, and the diameter of the second positioning rod 23 is adapted to the inner diameter of the positioning tube 3;

[0081] By setting the positioning rod and the positioning cylinder 3, after the hinge seat 25 is screwed, the second positioning rod 23 can be pushed toward the first positioning rod 24, and after the second positioning rod 23 is aligned with the positioning cylinder 3, the second positioning rod 23 is loosened so that the second positioning rod 23 can be smoothly inserted into the positioning cylinder 3, thereby fixing the angle of the adjusting screw 33 and improving reliability.

[0082] In order to facilitate safety testing; Figure 5 As shown, a distance sensor 27 is installed at the end of the second positioning rod 23, and a standard block 28 is installed in the positioning cylinder 3. The position of the standard block 28 is adapted to the distance sensor 27. The steel box girder module also includes a control unit and an alarm unit. Both the distance sensor 27 and the alarm unit are connected to the control unit by signal.

[0083] By setting up the distance measuring sensor 27 and the standard block 28, when the structure is deformed under pressure, the detection position of the distance measuring sensor 27 is offset from the standard block 28, resulting in a change in the detection value. The control unit controls the alarm unit to perform alarm processing based on the detection information fed back by the distance measuring sensor 27, thereby improving reliability.

[0084] To improve structural stability; Figure 2 As shown, a plurality of reinforcing angle plates 7 are installed on the side of the side beam plate 2, a plurality of second reinforcing grooves 10 are provided on the top of the reinforcing angle plates 7, and a second reinforcing frame 9 is provided on the bottom of the top beam plate 1. The second reinforcing grooves 10 are in a U-shaped structure adapted to the second reinforcing frame 9. When the reinforcing angle plates 7 are installed on the side of the side beam plate 2, the second reinforcing frame 9 is snapped into the second reinforcing grooves 10, and the ends of the reinforcing angle plates 7 on the same side are fixed with the same end plate 12;

[0085] By providing structures such as the reinforcing angle plates 7 and the end plates 12 , the supporting effect on the top beam plate 1 can be improved and the firmness of the structure can be ensured.

[0086] In addition, openings 13 are formed on the first vertical beam plate 18 and the second vertical beam plate 6 .

[0087] In order to better support and reinforce the structure; Figure 3 、 Figure 6 As shown, a second auxiliary support mechanism is provided between the top beam plate 1 and the lower beam plate 4, and the second auxiliary support mechanism includes:

[0088] An upper support column 31, with a support base 32 disposed on the top of the upper support column 31, and the support base 32 is snapped onto the outer side of the first reinforcement frame 8;

[0089] The lower support column 19 is adjustable to the upper support column 31 through a threaded adjustment portion, and the threaded adjustment portion is used to adjust the distance between the lower support column 19 and the upper support column 31;

[0090] Positioning seat 39, a positioning frame 35 is provided on the top of the lower beam 4, the positioning seat 39 is installed on the outside of the positioning frame 35, and a locking component is provided on one side of the positioning seat 39;

[0091] By setting up a second auxiliary support mechanism, the position of the structure can be adjusted according to actual conditions, and the position of the positioning seat 39 can be locked through the locking assembly. The distance between the lower support column 19 and the upper support column 31 can be adjusted through the threaded adjustment part, so that the support seat 32 can be reliably clamped on the outside of the first reinforcement frame 8 to achieve stable support for the top beam plate 1.

[0092] In order to facilitate fixation; Figure 7 、 Figure 8 As shown, the locking assembly includes:

[0093] A positioning plate 37 is slidably connected to an inner wall of one side of the positioning seat 39;

[0094] The guide column 40 is fixed to the outer wall of one side of the lower support column 19, and the positioning plate 37 is slidably connected to the outer wall of the guide column 40;

[0095] The threaded knob 36 is rotatably mounted on the lower support column 19, and the positioning plate 37 is connected to the outer wall of the threaded knob 36 by threads;

[0096] The second protruding tooth 41 is fixed to one end of the positioning plate 37 located in the positioning seat 39. The first protruding tooth 38 is provided on one side of the positioning frame 35. The second protruding tooth 41 is adapted to the first protruding tooth 38;

[0097] The positioning frame 35 is in a Y-shaped structure, and the bottom surfaces of the two top ends of the positioning frame 35 are inclined structures; the ends of the second protruding teeth 41 are inclined structures that match the inclined surfaces of the positioning frame 35;

[0098] By setting up a locking assembly, after the position adjustment is completed, the positioning plate 37 can be controlled to move by rotating the threaded knob 36, and then the second protruding tooth 41 is engaged with the first protruding tooth 38 to fix the structure. Due to the adoption of the inclined surface design, the structural connection and locking can be better guided, thereby improving reliability.

[0099] The construction process of the bridge steel box girder installation structure of the present invention comprises the following steps:

[0100] S1: Install the first vertical beam plate 18 on the lower beam plate 4;

[0101] S2: Install the reinforcement plate 20 on the first vertical beam plate 18 to form a cross-shaped structure with the first vertical beam plate 18;

[0102] S3: Install the top beam plate 1 above the first vertical beam plate 18 so that the first reinforcement groove 22 and the first reinforcement frame 8 are engaged;

[0103] S4: Install the two second vertical beams 6 on both sides of the first vertical beam 18 so that the ribs 17 are inserted into the sockets 16;

[0104] S5: Screw the adjusting screw 33 to move the support frame 15 to the designated support position;

[0105] S6: Adjust the position of the positioning rod so that the second positioning rod 23 is inserted into the positioning tube 3;

[0106] S7: Place the positioning seat 39 outside the positioning frame 35, adjust it to a specified position, and fix the positioning seat 39 using the threaded knob 36;

[0107] S8: Adjust the effective lengths of the lower support column 19 and the upper support column 31 so that the support base 32 is securely connected to the outer side of the first reinforcement frame 8;

[0108] S9: Install the side beam plate 2 on the side of the first vertical beam plate 18 and the second vertical beam plate 6, so that the side ribs 5 are inserted into the side grooves 14;

[0109] S10: Install the reinforcement angle plate 7 on the side surface of the side beam plate 2 so that the second reinforcement groove 10 is connected with the second reinforcement frame 9 by snapping.

[0110] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A bridge steel box girder installation structure, comprising a set of steel box girder modules, characterized in that: The steel box girder module comprises: A top beam plate (1), wherein a group of linearly distributed first reinforcement frames (8) are provided at the bottom of the top beam plate (1); A lower beam plate (4), wherein a group of parallel lower ribs (11) are provided on the top of the lower beam plate (4); A first vertical beam plate (18), second vertical beam plates (6) are provided on both sides of the first vertical beam plate (18), first reinforcement grooves (22) adapted to the first reinforcement frame (8) are provided on the tops of the first vertical beam plate (18) and the second vertical beam plate (6), the first reinforcement grooves (22) are U-shaped, and lower clamping grooves adapted to the lower ribs (11) are provided on the bottoms of the first vertical beam plate (18) and the second vertical beam plate (6), and the first vertical beam plate (18) and the second vertical beam plate (6) are installed between the top beam plate (1) and the lower beam plate (4); A reinforcing plate (20) is provided with a first connecting groove, and a second connecting groove is provided on the first vertical beam plate (18). The reinforcing plate (20) is detachably mounted on the first vertical beam plate (18) through the first connecting groove and the second connecting groove to form a cross-shaped structure. A convex rib (17) is provided. A socket (16) is provided on the second vertical beam plate (6). When the second vertical beam plate (6) is mounted between the top beam plate (1) and the lower beam plate (4), the convex rib (17) is snap-fitted into the socket (16). A side beam plate (2), wherein a side rib (5) is provided on one side of the side beam plate (2), and a side groove (14) is provided on the side of each of the first vertical beam plate (18) and the second vertical beam plate (6), and the side beam plate (2) is clamped in the side groove (14) via the side rib (5); A first auxiliary support mechanism is provided between the top beam plate (1) and the lower beam plate (4), and the first auxiliary support mechanism comprises: A mounting frame (34), the mounting frame (34) is mounted in the first reinforcement frame (8), an adjusting screw (33) is rotatably mounted on the mounting frame (34), and the screw threads of the adjusting screw (33) are located on both sides of the mounting frame (34) and have opposite rotation directions; A slide (30), the slide (30) is slidably connected to the inner wall of the first reinforcement frame (8), and the slide (30) is connected to the outer wall of the adjustment screw (33) through a thread; The support frame (15) is provided with a strip-shaped opening at the bottom of the first reinforcement frame (8), and the support frame (15) slides in the strip-shaped opening; A card seat (21), the card seat (21) is fixed to the outer wall of the bottom of the support frame (15), the card seat (21) is slidably connected to the outer wall of the lower rib (11), a limit plate (29) is fixed on the lower rib (11), and a groove adapted to the limit plate (29) is provided on the card seat (21); A hinge seat (25) is fixed to one end of the adjusting screw rod (33), a positioning rod is hingedly connected to the hinge seat (25), and an auxiliary fixing portion for fixing the positioning rod is provided on the second vertical beam plate (6); The positioning rod comprises: A first positioning rod (24), one end of which is mounted on a hinge seat (25); a second positioning rod (23), the second positioning rod (23) being slidably connected to the outer wall of the first positioning rod (24), and the second positioning rod (23) and the first positioning rod (24) being connected via a spring (26); The auxiliary fixing portion comprises a positioning cylinder (3), the positioning cylinder (3) is fixed on the second vertical beam plate (6), and the diameter of the second positioning rod (23) is adapted to the inner diameter of the positioning cylinder (3).

2. A bridge steel box girder installation structure according to claim 1, characterized in that: A distance sensor (27) is installed at the end of the second positioning rod (23), and a standard block (28) is installed in the positioning cylinder (3). The position of the standard block (28) is adapted to the distance sensor (27). The steel box girder module further includes a control unit and an alarm unit. Both the distance sensor (27) and the alarm unit are connected to the control unit by signal.

3. The bridge steel box girder installation structure according to claim 2, characterized in that: The side beam plate (2) is provided with a plurality of reinforcing angle plates (7), the top of the reinforcing angle plates (7) is provided with a plurality of second reinforcing grooves (10), the bottom of the top beam plate (1) is provided with a second reinforcing frame (9), the second reinforcing grooves (10) are in a U-shaped structure adapted to the second reinforcing frame (9), when the reinforcing angle plates (7) are installed on the side of the side beam plate (2), the second reinforcing frame (9) is inserted into the second reinforcing grooves (10), and the ends of the reinforcing angle plates (7) on the same side are fixed with the same end plate (12).

4. The bridge steel box girder installation structure according to claim 3, characterized in that: Both the first vertical beam plate (18) and the second vertical beam plate (6) are provided with openings (13).

5. The bridge steel box girder installation structure according to claim 3, characterized in that: A second auxiliary support mechanism is provided between the top beam plate (1) and the lower beam plate (4), and the second auxiliary support mechanism comprises: An upper support column (31), wherein a support seat (32) is provided on the top of the upper support column (31), and the support seat (32) is clamped to the outside of the first reinforcement frame (8); A lower support column (19), wherein the lower support column (19) and the upper support column (31) are adjustable connected via a threaded adjustment portion, wherein the threaded adjustment portion is used to adjust the spacing between the lower support column (19) and the upper support column (31); A positioning seat (39) is provided on the top of the lower beam plate (4) with a positioning frame (35), the positioning seat (39) is installed on the outside of the positioning frame (35), and a locking component is provided on one side of the positioning seat (39).

6. The bridge steel box girder installation structure according to claim 5, characterized in that: The locking assembly comprises: A positioning plate (37), the positioning plate (37) is slidably connected to an inner wall of one side of the positioning seat (39); A guide column (40), the guide column (40) is fixed to an outer wall of one side of the lower support column (19), and the positioning plate (37) is slidably connected to the outer wall of the guide column (40); A threaded knob (36), the threaded knob (36) is rotatably mounted on the lower support column (19), and the positioning plate (37) is connected to the outer wall of the threaded knob (36) through a thread; A second protruding tooth (41), the second protruding tooth (41) is fixed to one end of the positioning plate (37) located in the positioning seat (39), a first protruding tooth (38) is provided on one side of the positioning frame (35), and the second protruding tooth (41) is adapted to the first protruding tooth (38); The positioning frame (35) has a Y-shaped structure, and the bottom surfaces of the two top ends of the positioning frame (35) have an inclined surface structure; the end of the second protruding tooth (41) has an inclined surface structure that matches the inclined surface of the positioning frame (35).

7. The bridge steel box girder installation structure according to claim 6, characterized in that: The construction process of the bridge steel box girder installation structure includes the following steps: S1: Installing the first vertical beam plate (18) on the lower beam plate (4); S2: Installing the reinforcement plate (20) on the first vertical beam plate (18) to form a cross-shaped structure with the first vertical beam plate (18); S3: Install the top beam plate (1) above the first vertical beam plate (18) so that the first reinforcement groove (22) and the first reinforcement frame (8) are engaged; S4: Install the two second vertical beam plates (6) on both sides of the first vertical beam plate (18) so that the ribs (17) are inserted into the sockets (16); S5: Screw the adjusting screw (33) to move the support frame (15) to the designated support position; S6: Adjust the position of the positioning rod so that the second positioning rod (23) is inserted into the positioning cylinder (3); S7: Place the positioning seat (39) outside the positioning frame (35), adjust it to a specified position, and fix the positioning seat (39) by means of a threaded knob (36); S8: Adjust the effective lengths of the lower support column (19) and the upper support column (31) so that the support base (32) is reliably connected to the outside of the first reinforcement frame (8); S9: Install the side beam plate (2) on the side of the first vertical beam plate (18) and the second vertical beam plate (6), so that the side ribs (5) are inserted into the side grooves (14); S10: Install the reinforcement angle plate (7) on the side of the side beam plate (2) so that the second reinforcement groove (10) is connected to the second reinforcement frame (9) by snapping.

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