Steel vestibule bridge deck slab and bridge deck secondary beam connecting structure

Abstract

The utility model discloses a connecting structure of a steel vestibule bridge deck slab and a bridge deck secondary beam, and belongs to the technical field of building steel structures. A connecting structure of a steel vestibule bridge deck slab and a bridge deck secondary beam comprises the steel vestibule bridge deck slab and further comprises a U-shaped secondary beam, the U-shaped secondary beam is located below the steel vestibule bridge deck slab and comprises a bottom plate and a web plate, one end of the web plate is connected with the bottom plate, and the other end of the web plate is welded to the steel vestibule bridge deck slab. Auxiliary plates are arranged at the connecting ends of the web plates and the steel vestibule bridge deck slab. In order to solve the problems that a thickened bridge deck is large in dead weight, economic cost is increased and fatigue cracking is prone to occurring, the upper end of a web of a U-shaped secondary beam is subjected to a hot extrusion process, so that the upper end of the web extends outwards to form an auxiliary plate, the contact area during welding of the U-shaped secondary beam and a steel vestibule bridge deck is increased, and the local rigidity is improved; and the anti-fatigue capability of the welding position is improved, and the cost of later cracking repair is reduced.

Description

Technical Field

[0001] This utility model relates to the field of building steel structure technology, specifically a connection structure between the steel corridor bridge deck and the secondary beam of the bridge deck. Background Technology

[0002] Corridors are indispensable structures in industrial production processes. When used in conjunction with transport vehicles, they can transport materials quickly and efficiently. Steel corridors, in particular, have been widely used in practical engineering construction due to their advantages such as light weight, strong load-bearing capacity, and convenient construction.

[0003] The components of the steel corridor are usually connected by welding. However, due to the large number of welds and the frequent transport of materials in the steel corridor over a long period of time, fatigue cracking is prone to occur under load, which greatly shortens the service life of the steel corridor. In particular, the connection between the steel corridor bridge deck and the secondary beams of the bridge deck, i.e. the stiffening ribs, directly bears the repeated action of wheel loads. The local load effect of the structure is significant, the stress concentration is obvious, and fatigue cracking is more likely to occur.

[0004] The existing traditional method to solve the above problems is to thicken the steel corridor bridge deck to improve the structural rigidity of the connection between it and the secondary beams of the bridge deck. However, the thickened bridge deck has a large self-weight, increases economic costs, and is prone to fatigue cracking. Therefore, it does not meet the current requirements. In response, a new connection structure between the steel corridor bridge deck and the secondary beams of the bridge deck is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a connection structure between the steel corridor bridge deck and the secondary beam of the bridge deck. By performing a hot extrusion process on the upper end of the web of the U-shaped secondary beam, an auxiliary plate is extended outward from the upper end of the web, thereby increasing the contact area when the U-shaped secondary beam is welded to the steel corridor bridge deck, improving the local stiffness, and improving the fatigue resistance of the weld, which can solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a connection structure between a steel corridor bridge deck and a secondary beam, comprising a steel corridor bridge deck and a U-shaped secondary beam. The U-shaped secondary beam is located below the steel corridor bridge deck and includes a bottom plate and a web. One end of the web is connected to the bottom plate, and the other end of the web is welded to the steel corridor bridge deck. An auxiliary plate is provided at the connection end between the web and the steel corridor bridge deck. A first clamping plate is provided on the top of the steel corridor bridge deck, and a support plate is provided below the U-shaped secondary beam. A limiting plate is provided at one end of the first clamping plate, and a guide post is provided inside the limiting plate.

[0007] Preferably, the auxiliary plate has a triangular structure, with one side of the auxiliary plate connected to the web plate and the other side of the auxiliary plate connected to the steel corridor bridge deck. The auxiliary plate and the web plate are of equal length.

[0008] Preferably, the multiple U-shaped secondary beams are parallel to each other, the interval between the multiple U-shaped secondary beams is equal, the support plate is in contact with the bottom of the base plate, and side plates are provided on both sides of the support plate, with the side plates fitting against the surface of the web plate.

[0009] Preferably, a fixing plate is provided on both sides of the first clamping plate, a second clamping plate is provided below the first clamping plate, one end of the second clamping plate is connected to the limiting plate, and the steel corridor bridge panel is located between the first clamping plate and the second clamping plate.

[0010] Preferably, the lower end of the guide post is provided with a limiting block, the upper part of the guide post is provided with a threaded wall, the guide post and the limiting plate are connected by threads, and the limiting block is located below the support plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model uses a hot extrusion process on the upper end of the web of the U-shaped secondary beam to extend the auxiliary plate outward, thereby increasing the contact area when welding the U-shaped secondary beam to the steel corridor bridge deck, improving local stiffness, and enhancing the fatigue resistance of the weld. During welding, the auxiliary plate increases the weld leg length, thereby reducing the requirements for welding precision and ensuring welding quality. At the same time, the auxiliary plate also avoids the impact of residual stress introduced by multiple welding and welding defects on structural damage.

[0013] 2. This utility model features a side plate on the side of the steel corridor bridge deck and a support plate below the U-shaped secondary beam. The side plate and the support plate are connected by guide columns, and the side plate is connected to the steel corridor bridge deck by a first clamping plate and a second clamping plate. When personnel rotate the guide columns, the guide columns and limiting blocks move upward, and the limiting blocks drive the support plate upward until the upper end of the web plate contacts the steel corridor bridge deck, thereby stabilizing the position of the U-shaped secondary beam. This facilitates subsequent welding operations and indirectly ensures the quality of the welding work. Attached Figure Description

[0014] Figure 1 This is the overall front view of the present invention;

[0015] Figure 2 This is a partial structural diagram of the U-shaped secondary beam of this utility model;

[0016] Figure 3 For the present utility model Figure 2 Enlarged view of part A;

[0017] Figure 4 This is a partial structural diagram of the guide post of this utility model.

[0018] In the diagram: 1. Steel corridor bridge deck; 2. U-shaped secondary beam; 201. Bottom plate; 202. Web plate; 203. Auxiliary plate; 3. First clamping plate; 301. Fixing plate; 302. Limiting plate; 303. Second clamping plate; 4. Supporting plate; 401. Side plate; 5. Guide column; 501. Limiting block; 502. Threaded wall. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] To address the issues of increased weight, higher economic costs, and susceptibility to fatigue cracking associated with thickened bridge decks, please refer to [link to relevant documentation]. Figure 1-4 This utility model provides an embodiment of a steel corridor bridge deck and secondary beam connection structure, including a steel corridor bridge deck 1 and a U-shaped secondary beam 2. The U-shaped secondary beam 2 is located below the steel corridor bridge deck 1. The U-shaped secondary beam 2 includes a bottom plate 201 and a web plate 202. One end of the web plate 202 is connected to the bottom plate 201, and the other end of the web plate 202 is welded to the steel corridor bridge deck 1. An auxiliary plate 203 is provided at the connection end between the web plate 202 and the steel corridor bridge deck 1. A first clamping plate 3 is provided on the top of the steel corridor bridge deck 1, and a support plate 4 is provided below the U-shaped secondary beam 2. A limiting plate 302 is provided at one end of the first clamping plate 3, and a guide post 5 is provided inside the limiting plate 302.

[0021] The auxiliary plate 203 has a triangular structure. One side of the auxiliary plate 203 is connected to the web plate 202, and the other side is connected to the steel corridor bridge deck 1. The auxiliary plate 203 and the web plate 202 are of equal length. The vertical height from the vertex of the auxiliary plate 203 in contact with the web plate 202 to the steel corridor bridge deck 1 is between 3 / 56 and 1 / 14 of the height of the U-shaped secondary beam 2. The distance from the vertex of the auxiliary plate 203 in contact with the steel corridor bridge deck 1 to the web plate 202 is 4-6 mm. The welding process is single-sided penetration welding. Multiple U-shaped secondary beams 2 are parallel to each other, and the spacing between multiple U-shaped secondary beams 2 is equal. The support plate 4 is in contact with the bottom of the bottom plate 201. Side plates 401 are provided on both sides of the support plate 4, and the side plates 401 are in contact with the surface of the web plate 202.

[0022] The upper end of the web 202 of the U-shaped secondary beam 2 is subjected to a hot extrusion process, which causes the upper end of the web 202 to extend outward to form an auxiliary plate 203. This increases the contact area between the U-shaped secondary beam 2 and the steel corridor bridge deck 1 during welding, thereby improving the local stiffness and the fatigue resistance of the weld. During welding, the auxiliary plate 203 increases the weld leg length, thereby reducing the requirements for welding precision and ensuring welding quality. At the same time, the auxiliary plate 203 also avoids the impact of residual stress introduced by multiple welding and welding defects on structural damage, reducing the cost of later crack repair and further improving economic efficiency.

[0023] Fixed plates 301 are provided on both sides of the first clamping plate 3. A second clamping plate 303 is provided below the first clamping plate 3. One end of the second clamping plate 303 is connected to the limiting plate 302. The steel corridor bridge panel 1 is located between the first clamping plate 3 and the second clamping plate 303. A limiting block 501 is provided at the lower end of the guide column 5. A threaded wall 502 is provided at the upper part of the guide column 5. The guide column 5 and the limiting plate 302 are connected by threads. The limiting block 501 is located below the support plate 4. The side plate 401 is connected to the support plate 4 through the guide column 5. The side plate 401 is fixed to the steel corridor bridge panel 1 through the first clamping plate 3 and the second clamping plate 303. When the personnel rotate the guide column 5, the guide column 5 and the limiting block 501 move upward. The limiting block 501 then drives the support plate 4 to move upward until the upper end of the web plate 202 contacts the steel corridor bridge panel 1, thereby stabilizing the position of the U-shaped secondary beam 2. This helps the personnel to carry out subsequent welding operations and indirectly ensures the quality of the welding operations.

[0024] Working principle: By hot extruding the upper end of the web 202 of the U-shaped secondary beam 2, an auxiliary plate 203 extends outward from the upper end of the web 202, thereby increasing the contact area between the U-shaped secondary beam 2 and the steel corridor bridge deck 1 during welding, improving local stiffness and fatigue resistance at the weld; by rotating the guide column 5, the support plate 4 is moved upward until the upper end of the web 202 contacts the steel corridor bridge deck 1, so that the support plate 4 stabilizes the position of the U-shaped secondary beam 2, ensuring stability during welding operations.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A connection structure between a steel corridor bridge deck and a secondary beam of the bridge deck, comprising a steel corridor bridge deck (1), characterized in that; It also includes a U-shaped secondary beam (2), which is located below the steel corridor bridge deck (1). The U-shaped secondary beam (2) includes a bottom plate (201) and a web plate (202). One end of the web plate (202) is connected to the bottom plate (201), and the other end of the web plate (202) is welded to the steel corridor bridge deck (1). An auxiliary plate (203) is provided at the connection end between the web plate (202) and the steel corridor bridge deck (1). A first clamping plate (3) is provided on the top of the steel corridor bridge deck (1), and a support plate (4) is provided below the U-shaped secondary beam (2). A limit plate (302) is provided at one end of the first clamping plate (3), and a guide column (5) is provided inside the limit plate (302).

2. The connection structure between the steel corridor bridge deck and the secondary beam of the bridge deck according to claim 1, characterized in that: The auxiliary plate (203) has a triangular structure. One side of the auxiliary plate (203) is connected to the web plate (202), and the other side of the auxiliary plate (203) is connected to the steel corridor bridge deck (1). The auxiliary plate (203) and the web plate (202) are of the same length.

3. The connection structure between the steel corridor bridge deck and the secondary beam of the bridge deck according to claim 1, characterized in that: Multiple U-shaped secondary beams (2) are parallel to each other, and the interval between multiple U-shaped secondary beams (2) is equal. The support plate (4) is in contact with the bottom of the bottom plate (201). Side plates (401) are provided on both sides of the support plate (4), and the side plates (401) are in contact with the surface of the web plate (202).

4. The connection structure between the steel corridor bridge deck and the secondary beam of the bridge deck according to claim 1, characterized in that: Fixing plates (301) are provided on both sides of the first clamping plate (3), and a second clamping plate (303) is provided below the first clamping plate (3). One end of the second clamping plate (303) is connected to the limiting plate (302), and the steel corridor bridge panel (1) is located between the first clamping plate (3) and the second clamping plate (303).

5. The connection structure between the steel corridor bridge deck and the secondary beam of the bridge deck according to claim 1, characterized in that: The guide post (5) has a limit block (501) at its lower end and a threaded wall (502) at its upper part. The guide post (5) is connected to the limit plate (302) by threads, and the limit block (501) is located below the support plate (4).

Images