Adjustable flange plate widening structure of box girder

Abstract

The invention discloses a box girder adjustable flange plate widening structure, and relates to the technical field of box girders, the box girder adjustable flange plate widening structure comprises a steel box girder main body, the top of the steel box girder main body is provided with a top plate, the bottom edge of the top plate is provided with a plurality of flange plates, and the left and right sides of the box girder main body are provided with widening assemblies for increasing the width of the flange plates; the widening assembly is arranged at the welding position of the top plate and the tail end of the flange plate, the widening assembly comprises a supporting plate, a plurality of widening plates and a screw rod, and the widening assembly has the advantages that by designing the widening plates hinged to one another, the effect of flexibly adjusting the width of the flange plate is achieved, and the working efficiency is greatly improved; according to the technical scheme, it is guaranteed that the widening assembly cannot displace or deform due to stress in the using process, the stability of the flange plate widening structure is maintained, the design of the reinforcing plates plays a crucial role in improving the stability of the whole widening assembly, and the stability of the widening assembly under various complex working conditions is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of box girders, and specifically to an adjustable flange widening structure for box girders. Background Technique

[0002] In the field of bridge engineering, box girder structures are widely used. Box girders are divided into steel box girders and cast-in-place concrete box girders. After the design and construction of the flanges of both types of box girders are completed, their widths are usually fixed. However, with the changes in traffic flow, the expansion of usage functions, and the special requirements of different construction projects, the fixed-width flanges have many limitations.

[0003] For example, in the renovation projects of some existing bridges, if it is necessary to increase the bearing capacity or traffic width of the bridge, it is often necessary to widen the flanges. For the traditional fixed flange structure, if widening is to be achieved, large-scale demolition and reconstruction work may be required, which is not only costly but also has a long construction period and will cause serious interference to traffic. At the same time, in some cases of temporary or phased usage requirements, such as temporarily adding lanes to cope with the traffic flow peak during special periods, the traditional fixed flanges cannot meet this flexible adjustment requirement. Therefore, we propose an adjustable flange widening structure for box girders. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustable flange widening structure for box girders.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An adjustable flange widening structure for box girders, including a steel box girder main body. The top of the steel box girder main body is provided with a top plate. Multiple flanges are provided at the bottom edge of the top plate. Widening components for increasing the width of the flanges are provided on both the left and right sides of the box girder main body. The widening components are arranged at the welding joint between the top plate and the end of the flange. The widening components include support plates, multiple widening plates, and screws. The multiple widening plates are connected to each other by a detachable connection method. The support plate is detachably connected to the widening plate at the end, and the widening plate at the other end of the support plate is connected to the welding joint between the top plate and the end of the flange. Threaded holes matching the screws are provided at the end of the flange, and the multiple screws penetrate through the support plates.

[0006] As a further solution of the present invention: The multiple widening plates are connected to each other by a hinged method, and accommodation spaces adapted to hinges are provided on both sides of the widening plates.

[0007] As a further solution of the present invention: The widening plate is hinged to the side of the top plate, and the length of the widening plate is equal to the length of the top plate.

[0008] As a further solution of the present invention: The support plate is integrally in an inverted L shape, the inner side of its horizontal part is hinged to one side of the widening plate, and through holes corresponding to the threaded holes at the ends of the flange plates are formed on the vertical part.

[0009] As a further solution of the present invention: The diameter of the through hole is equal to the diameter of the screw rod, and a handle is provided at the outer end of the screw rod.

[0010] As a further solution of the present invention: Chambers I are formed at the tops of both the support plate and the widening plate, and a Chamber II communicating with Chamber I is formed at the top edge of the top plate.

[0011] As a further solution of the present invention: A plurality of mounting holes I are formed on the support plate in the area of Chamber I, and a plurality of mounting holes I are formed on the top plate in the area of Chamber II.

[0012] As a further solution of the present invention: Reinforcing plates are provided in Chambers I and II, and the size of the reinforcing plates is adapted to the sizes of Chambers I and II.

[0013] As a further solution of the present invention: Mounting holes II corresponding to the mounting holes I are formed on the reinforcing plates, one end of the reinforcing plate is fixed in Chamber I by screws, and the other end of the reinforcing plate is fixed in Chamber II by screws.

[0014] Adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. By designing multiple groups of mutually hinged widening plates, the present invention realizes the effect of flexibly adjusting the width of the flange plate. When it is necessary to increase the width of the flange plate, the number of widening plates can be increased. On the contrary, when it is necessary to reduce the width of the flange plate, the number of widening plates can be reduced, and the width can be reduced by removing the corresponding widening plates, thereby greatly improving the work efficiency. When it is necessary to adjust or maintain the widening assembly, the staff can easily separate the hinges between the widening plates, reducing the time and labor costs required for maintenance and adjustment. At the same time, compared with the integral widening structure, the hinged and foldable widening plates are easier to organize and store, and can make more effective use of limited space resources both in the warehouse and in the transport vehicle. This design makes the adjustable flange plate widening structure of the entire box girder highly flexible and adaptable in different usage scenarios;

[0016] 2. In the present invention, through the mutual cooperation of the support plate and the screw rod, it is ensured that during the use process, the widening component will not be displaced or deformed due to the applied force, maintaining the stability of the flange plate widening structure. During the installation process, the screw rod is passed through the through hole of the vertical part of the support plate, and then by rotating the handle at the outer end of the screw rod, the inner end of the screw rod is rotated into the threaded hole at the end of the flange plate. Due to this connection method of the screw rod, it can withstand various forces generated by the widening component, including the self-weight of the widening plate and the possible external loads it may bear, etc. These forces are transmitted to the flange plate through the screw rod. At the same time, the tight connection between the screw rod and the support plate and the flange plate enables the widening component to be stably maintained in the set position, thus effectively supporting the entire widening component;

[0017] 3. The design of the reinforcement plate in the present invention plays a crucial role in improving the stability of the entire widening component. When the widening plate is subjected to an external force, these forces will be transmitted to the reinforcement plate through the widening plate, and the reinforcement plate distributes the forces to the top plate and the support plate, so that the forces will not be concentrated on a certain part, effectively avoiding structural damage caused by excessive local stress. At the same time, this connection method connects the top plate, the widening plate, and the support plate into a whole, enhancing the integrity and stability of the entire structure, and further improving the stability of the widening component under various complex working conditions.

[0018] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, they will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall structural schematic diagram of the widening structure in the embodiment of the present invention Figure 1 ;

[0020] Figure 2 is Figure 1 the partial enlarged schematic diagram at A in

[0021] Figure 3 is the overall structural schematic diagram of the widening structure in the embodiment of the present invention Figure 2 ;

[0022] Figure 4 is Figure 3 the partial enlarged schematic diagram at B in

[0023] Figure 5 is the structural schematic diagram of the main body of the steel box girder in the embodiment of the present invention;

[0024] Figure 6 is the structural schematic diagram of the support plate and the widening plate in the embodiment of the present invention Figure 1 ;

[0025] Figure 7 Structural schematic of the support plate and the widening plate in the embodiment of the present invention Figure 2 .

[0026] In the figure:

[0027] 1. Main body of steel box girder;

[0028] 2. Top plate; 201. Second cavity;

[0029] 3. Flange plate; 301. Threaded hole;

[0030] 4. Widening assembly; 41. Support plate; 411. Through hole; 42. Widening plate; 412a. First cavity; 43. Screw; 431. Handle; 44. Reinforcement plate. Specific implementation manners

[0031] The following further describes the specific implementation manners of the present invention with reference to the accompanying drawings. It should be noted here that the description of these implementation manners is used to help understand the present invention, but does not limit the present invention.

[0032] In addition, the technical features involved in the various implementation manners of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0033] Please refer to the attached Figure 1 - attached Figure 7 , a widening structure for an adjustable flange plate 3 of a box girder according to the present invention includes a main body 1 of a steel box girder. A top plate 2 is provided at the top of the main body 1 of the steel box girder. A plurality of flange plates 3 are provided at the bottom edge of the top plate 2. Widening assemblies 4 for increasing the width of the flange plates 3 are provided on both the left and right sides of the box girder main body. The widening assemblies 4 are arranged at the welded joints between the top plate 2 and the ends of the flange plates 3. The widening assembly 4 includes a support plate 41, a plurality of widening plates 42, and a screw 43. The plurality of widening plates 42 are connected to each other in a detachable connection manner. The support plate 41 is detachably connected to the widening plate 42 at the end. And the widening plate 42 at the other end of the support plate 41 is connected to the welded joint between the top plate 2 and the ends of the flange plates 3. When it is necessary to increase the width of the flange plate 3, the number of widening plates 42 can be increased. On the contrary, when it is necessary to reduce the width of the flange plate 3, the number of widening plates 42 can be reduced. The width contraction is achieved by removing the corresponding widening plates 42, thereby realizing the function of flexibly adjusting the width of the flange plate 3. Threaded holes 301 matching with the screw 43 are provided at the ends of the flange plates 3. A plurality of screws 43 penetrate through the support plate 41. During the installation process, the screw 43 is passed through the support plate 41, and the inner end of the screw 43 is rotated into the threaded hole 301 at the end of the flange plate 3.

[0034] Example 1: Multiple widening plates 42 are connected to each other by means of hinges. Accommodation spaces adapted to the hinges are provided on both sides of the widening plate 42. The widening plate 42 is hinged to the side surface of the top plate 2, and the length of the widening plate 42 is equal to the length of the top plate 2.

[0035] Specifically, from the perspective of disassembly, due to the hinge connection, when adjustment or maintenance of the widening assembly 4 is required, the staff can easily separate the hinges between the respective widening plates 42. This convenient disassembly method greatly improves work efficiency and reduces the time and labor costs required for maintenance and adjustment. In terms of storage, the hinged widening plates 42 exhibit excellent convenience. When the widening plates 42 are not needed, for example, during transportation or long-term storage, the widening plates 42 can be folded along the hinges. Since accommodation spaces adapted to the hinges are provided on both sides of the widening plate 42, during the folding process, each component can fit closely, reducing the overall occupied space. Moreover, this folding and storage method can ensure that the widening plates 42 will not be damaged due to mutual collision or friction during storage, which is beneficial to extending the service life of the widening plates 42. At the same time, compared with an integral widening structure, the hinged and foldable widening plates 42 are easier to organize and store, and can make more effective use of limited space resources whether in a warehouse or in a transport vehicle. This design makes the entire adjustable flange plate 3 widening structure of the box girder highly flexible and adaptable in different usage scenarios.

[0036] Example 2: The support plate 41 is integrally in an inverted L shape. The inner side of its horizontal part is hinged to one side of the widening plate 42, and through holes 411 corresponding to the threaded holes 301 at the end of the flange plate 3 are provided on the vertical part. The diameter of the through holes 411 is equal to the diameter of the screw 43, and a handle 431 is provided at the outer end of the screw 43.

[0037] Specifically, during the installation process, the screw 43 is passed through the through holes 411 in the vertical part of the support plate 41, and then by rotating the handle 431 at the outer end of the screw 43, the inner end of the screw 43 is rotated into the threaded holes 301 at the end of the flange plate 3. Due to this connection method of the screw 43, it can withstand various forces generated by the widening assembly 4, including the self-weight of the widening plate 42 and possible external loads, etc. These forces are transmitted to the flange plate 3 through the screw 43. At the same time, the tight connection between the screw 43 and the support plate 41 and the flange plate 3 enables the widening assembly 4 to be stably maintained in the set position, thereby effectively supporting the entire widening assembly 4 and ensuring that the widening assembly 4 will not be displaced or deformed due to the applied force during use, maintaining the stability of the flange plate 3 widening structure.

[0038] Embodiment 3: Cavity 1 (412a) is provided at the top of both the support plate 41 and the widening plate 42, and cavity 2 (201) communicating with cavity 1 (412a) is provided at the top edge of the top plate 2. A plurality of first mounting holes are provided on the support plate 41 in the area of cavity 1 (412a), and a plurality of first mounting holes are provided on the top plate 2 in the area of cavity 2 (201). A reinforcing plate 44 is provided in cavity 1 (412a) and cavity 2 (201). The size of the reinforcing plate 44 is adapted to the sizes of cavity 1 (412a) and cavity 2 (201). Second mounting holes corresponding to the first mounting holes are provided on the reinforcing plate 44. One end of the reinforcing plate 44 is fixed in cavity 1 (412a) by screws, and the other end of the reinforcing plate 44 is fixed in cavity 2 (201) by screws;

[0039] Specifically, when the widening plate 42 is subjected to external forces, these forces will be transmitted to the reinforcing plate 44 through the widening plate 42. The reinforcing plate 44 disperses the forces onto the top plate 2 and the support plate 41, so that the forces will not concentrate on a certain part. For example, when a vehicle is driving on a box girder and generates vibration or impact loads, the forces received by the widening plate 42 are evenly transmitted to the top plate 2 and the support plate 41 through the reinforcing plate 44, effectively avoiding structural damage caused by excessive local stress. At the same time, this connection method connects the top plate 2, the widening plate 42 and the support plate 41 into a whole, enhancing the integrity and stability of the entire structure, and further improving the stability of the widening assembly 4 under various complex working conditions.

[0040] Working principle:

[0041] First, when it is necessary to adjust the width of the flange plate 3, it can be achieved by increasing or decreasing the number of widening plates 42. When increasing the widening plate 42, the new widening plate 42 is connected to the original widening plate 42 by a hinge. The widening plate 42 at one end of the support plate 41 is connected to the welding joint of the top plate 2 and the end of the flange plate 3, so that the flange plate 3 expands outwards. When decreasing the widening plate 42, the corresponding widening plate 42 is removed to achieve width contraction. The operation is simple and convenient, and can effectively change the width of the flange plate 3 to meet the requirements of different working conditions;

[0042] Second, reinforce the widening assembly 4. During installation, the screw rod 43 is passed through the through hole 411 of the support plate 41 and screwed into the threaded hole 301 at the end of the flange plate 3. During use, the forces such as the weight and external loads borne by the widening plate 42 are transmitted to the flange plate 3 through the screw rod 43. The tight connection between the screw rod 43 and the support plate 41 and the flange plate 3 can stably support the widening assembly 4, prevent it from displacing or deforming when stressed, ensure the stability of the widening assembly 4 in the working state, and provide reliable support for the entire structure;

[0043] Finally, the widening component 4 is further reinforced, and the size of the reinforcement plate 44 is adapted to the cavity 1 412a and the cavity 2 201. There is a mounting hole 2 corresponding to the mounting hole 1. One end of the reinforcement plate 44 is fixed in the cavity 1 412a by screws, and the other end is fixed in the cavity 2 201. When the widening plate 42 is subjected to force, the force is dispersed to the top plate 2 and the support plate 41 through the reinforcement plate 44 to avoid excessive local force. Regardless of the vibration generated by the vehicle's driving or other impact loads, this connection method can make the top plate 2, the widening plate 42 and the support plate 41 form a whole, enhance the structural integrity and stability, ensure that the widening component 4 is stable and reliable under complex working conditions, and ensure the safe use of the entire box girder structure. At this point, the entire work process is completed.

[0044] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0046] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0047] It is apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the changes still fall within the protection scope of the invention.

Claims

1. A box beam adjustable flange plate (3) widening structure, comprising a steel box beam body (1), a top plate (2) is provided on the top of the steel box beam body (1), and a plurality of flange plates (3) are provided on the bottom edge of the top plate (2), characterized in that: The left and right sides of the box girder body are both provided with widening components (4) for increasing the width of the flange plate (3). The widening components (4) are arranged at the welding point between the top plate (2) and the ends of the flange plate (3). The widening components (4) include a support plate (41), a plurality of widening plates (42) and a screw rod (43). The plurality of widening plates (42) are connected to each other in a detachable connection manner. The support plate (41) is detachably connected to the widening plate (42) at the end, and the widening plate (42) at the other end of the support plate (41) is connected to the welding point between the top plate (2) and the ends of the flange plate (3). A threaded hole (301) matching with the screw rod (43) is provided at the end of the flange plate (3), and the plurality of screw rods (43) penetrate the support plate (41).

2. The box beam adjustable flange plate (3) widening structure according to claim 1, characterized in that: The plurality of widening plates (42) are connected to each other in a hinged manner, and both sides of the widening plates (42) are provided with accommodating spaces adapted to the hinges.

3. The box beam adjustable flange plate (3) widening structure according to claim 2, characterized in that: The widening plate (42) is hinged to the side of the top plate (2), and the length of the widening plate (42) is equal to the length of the top plate (2).

4. The box beam adjustable flange plate (3) widening structure according to claim 1, characterized in that: The support plate (41) is in an inverted L-shape as a whole, the inner side of the horizontal portion of which is hinged to one side of the widening plate (42), and the vertical portion is provided with a through hole (411) corresponding to the threaded hole (301) at the end of the flange plate (3).

5. The box beam adjustable flange plate (3) widening structure according to claim 4, characterized in that: The diameter of the through hole (411) is equal to the diameter of the screw rod (43), and a handle (431) is provided at the outer end of the screw rod (43).

6. The box beam adjustable flange plate (3) widening structure according to claim 4, characterized in that: The support plate (41) and the widening plate (42) are both provided with a cavity 1 (412a) on their tops, and a cavity 2 (201) communicating with the cavity 1 (412a) is provided on the top edge of the top plate (2).

7. The box beam adjustable flange plate (3) widening structure according to claim 6, characterized in that: A plurality of mounting holes are provided on the widening plate (42) and the support plate (41) located in the cavity one (412a) area, and a plurality of mounting holes are provided on the top plate (2) located in the cavity two (201) area.

8. The box beam adjustable flange plate (3) widening structure according to claim 7, characterized in that: A reinforcement plate (44) is provided in the cavity one (412a) and the cavity two (201), and the size of the reinforcement plate (44) is compatible with the size of the cavity one (412a) and the cavity two (201).

9. The box beam adjustable flange plate (3) widening structure according to claim 8, characterized in that: The reinforcing plate (44) is provided with a second mounting hole corresponding to the first mounting hole, and one end of the reinforcing plate (44) is fixed in the first cavity (412a) by means of screws, and the other end of the reinforcing plate (44) is fixed in the second cavity (201) by means of screws.

Images