A precast beam component for high load bearing capacity of highway bridges

Abstract

This utility model discloses a high-load-bearing precast beam component for highway bridges, comprising H-shaped reinforcing steel. Precast beam bodies are fixedly connected to both sides of the inner wall of the H-shaped reinforcing steel. A support device is provided at the bottom of the precast beam body. The support device includes: a top support plate disposed below the precast beam body; and strip steel fixedly connected to the top of the top support plate. This utility model relates to the technical field of high-load-bearing precast beam components for highway bridges. Through the cooperation between the top support plate, support pads, and support base, when supporting the center of the bottom of the precast beam body, firstly, two strip steels are snapped onto the outer wall of the H-shaped reinforcing steel at the bottom of the precast beam body to form a fitting state. At this time, the support pads at the four corners of the top support plate can support the bottom of the precast beam body. Then, the support base rests on the ground, and the top support plate and the precast beam body are supported by a first support column.

Description

Technical Field

[0001] This utility model relates to the technical field of precast beam components for high load-bearing capacity of highway bridges, specifically a precast beam component for high load-bearing capacity of highway bridges. Background Technology

[0002] Highway bridges are built specifically for the passage of vehicles and pedestrians on highways. Constructed of steel, reinforced concrete, or wood, highway bridges are designed to withstand heavy roll loads of up to 8,000 tons. The width of the driving section depends on the expected intensity and speed of traffic, as well as the shape and span of the bridge.

[0003] Existing high-pressure precast beam components for highway bridges can be prefabricated in factories, resulting in a higher degree of automation and reduced human intervention. They can also be assembled and connected on-site during construction, leading to higher efficiency and precision, and better finish and integrity of the finished product.

[0004] However, the central part of the high-pressure precast beam components of existing highway bridges requires high support. In particular, compared with arch bridges, the support requirements for the central part of the flat bridge are even higher. Otherwise, safety hazards may easily occur over time. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precast beam component for highway bridges with high load-bearing capacity, which solves the problem of the need for high support in the central part. In particular, compared with arch bridges, flat bridges have higher requirements for the support of the central part; otherwise, safety hazards may easily occur over time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precast beam component for high load-bearing capacity of highway bridges, comprising an H-shaped reinforcing steel, wherein a precast beam body is fixedly connected to both sides of the inner wall of the H-shaped reinforcing steel, and a support device is provided at the bottom of the H-shaped reinforcing steel. The support device comprises: a top support plate disposed below the precast beam body; a strip steel fixedly connected to the top of the top support plate; four support pads respectively fixedly connected to the four top corners of the top support plate; a first support column fixedly connected to the bottom of the top support plate; and a support base fixedly connected to the bottom of the first support column. The bottom of the precast beam body is supported by the strip steel fixed to the top of the top support plate and the support pads, and the support base rests directly on the ground, with the top support plate supported by the first support column.

[0007] Preferably, both sides of the H-shaped reinforcing steel are provided with connecting portions, each connecting portion comprising: a first C-shaped steel, fixedly connected to the outer wall of the precast beam body; a toughening steel bar, one end of which is fixedly connected to the side of the outer wall of the first C-shaped steel bar away from the precast beam body; a second C-shaped steel, fixedly connected to the other end of the toughening steel bar; and a fixing unit disposed above the precast beam body; wherein, the first C-shaped steel is fixedly connected to the outer wall of the precast beam body through the fixing unit, and the toughening steel bar between the second C-shaped steel and the first C-shaped steel forms an expansion joint structure between two high-pressure precast beam components of the highway bridge, and the second C-shaped steel connects another high-pressure precast beam component of the highway bridge.

[0008] Preferably, the fixing unit includes: a pre-embedded nut, fixedly connected to the inner wall of the precast beam body; and two sets of fixing bolts, respectively inserted into the inner walls of the first C-shaped steel and the second C-shaped steel; wherein the fixing bolts on the inner wall of the first C-shaped steel are threadedly connected to the inner wall of the pre-embedded nut on the inner wall of the precast beam body, thereby fixing the first C-shaped steel and the precast beam body to the second C-shaped steel and another high-pressure precast beam component of the highway bridge.

[0009] Preferably, the outer wall of the precast beam body is provided with a reinforcement mechanism, the reinforcement mechanism including: a reinforcing steel, fixedly connected to the outer wall of the precast beam body; and a guardrail, fixedly connected to the top of the reinforcing steel; wherein, the outer wall of the precast beam body is reinforced by the reinforcing steel, and the guardrail enhances the safety of the precast beam body.

[0010] Preferably, each of the four bottom corners of the precast beam is fixedly connected to a second support column.

[0011] Beneficial effects

[0012] This utility model provides a high-load-bearing precast beam component for highway bridges. It has the following beneficial effects: Through the cooperation of a top support plate, support pads, and a support base, this high-load-bearing precast beam component supports the bottom center of the precast beam body. First, two strip steels are snapped onto the outer wall of the H-shaped reinforcing steel at the bottom of the precast beam body, forming a fitted state. At this time, the support pads at the four corners of the top support plate can support the bottom of the precast beam body. Then, the support base rests on the ground, and the top support plate and the precast beam body are supported by the first support column. This improves the support of the center of the precast beam component. Furthermore, the mutual fitting of the strip steels and the H-shaped reinforcing steel, along with the effect of the support pads, increases the support area at the bottom of the precast beam component, further improving stability.

[0013] By coordinating the first C-shaped steel, the toughening steel bar, and the second C-shaped steel, when splicing the precast beam body, the first C-shaped steel is first fixed to the outer wall of the precast beam body through a fixing unit. Then, the first C-shaped steel and the second C-shaped steel are fixed together through the toughening steel bar. While ensuring stability, an expansion joint can also be left at the splice between the precast beam components to ensure the stability between the two precast beam components. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 Structural schematic diagram of the main precast beam, H-shaped reinforcing steel, and supporting base;

[0016] Figure 3 This is a structural schematic diagram of the first C-shaped steel, the toughening steel bar, and the second C-shaped steel.

[0017] Figure 4 for Figure 1 A structural schematic diagram of the middle strip steel, support pad, and first support column;

[0018] Figure 5 for Figure 1 A structural schematic diagram of the precast beam body, H-shaped reinforcing steel, and fixing bolts.

[0019] In the diagram: 1. H-shaped reinforcing steel; 11. Precast beam body; 2. Support device; 21. Top support plate; 22. Strip steel; 23. Support pad; 24. First support column; 25. Support base; 3. Connecting part; 31. First C-shaped steel; 32. Tough steel bar; 33. Second C-shaped steel; 34. Fixing unit; 341. Embedded nut; 342. Fixing bolt; 4. Reinforcing mechanism; 41. Reinforcing steel; 42. Guardrail; 5. Second support column. Detailed Implementation

[0020] 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.

[0021] The central part of the precast beam components of existing highway bridges with high load-bearing capacity requires high support. In particular, compared with arch bridges, the support requirements for the central part of the flat bridge are even higher. Otherwise, safety hazards may easily occur over time.

[0022] In view of this, the present invention provides a precast beam component with high bearing capacity for highway bridges. Through the cooperation between the top support plate, support pads and support base, when supporting the bottom center of the precast beam body, firstly, two strip steels are attached to the outer wall of the H-shaped reinforcing steel at the bottom of the precast beam body to form a fitting state. At this time, the support pads at the four corners of the top support plate can support the bottom of the precast beam body. Then, the support base sits on the ground and supports the top support plate and the precast beam body through the first support column.

[0023] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0024] Example 1: By Figure 1-4 It is known that a high-load-bearing precast beam component for highway bridges includes an H-shaped reinforcing steel 1. The H-shaped reinforcing steel 1 allows two precast beam bodies 11 to be spliced ​​and fixed together, forming two driving lanes. The H-shaped reinforcing steel 1 also divides the two lanes on the precast beam bodies 11, ensuring vehicles travel on the correct lanes. The inner walls of the H-shaped reinforcing steel 1 are fixedly connected to the precast beam bodies 11 on both sides. A support device 2 is provided at the bottom of the H-shaped reinforcing steel 1. The support device 2 includes a top support plate 21, which is installed on the precast beam. Below the main body 11: a strip steel 22 is fixedly connected to the top of the top support plate 21; four support pads 23 are provided and fixedly connected to the four top corners of the top support plate 21 respectively; a first support column 24 is fixedly connected to the bottom of the top support plate 21; and a support base 25 is fixedly connected to the bottom of the first support column 24. The bottom of the precast beam main body 11 is supported by the strip steel 22 and support pads 23 fixed to the top of the top support plate 21, and the support base 25 is directly fixed to the ground and supports the top support plate 21 through the first support column 24.

[0025] In the specific implementation process, it is worth noting that the precast beam body 11 is divided into two parts. The H-shaped reinforcing steel 1 is fixed between the two precast beam bodies 11 by bolts. The H-shaped reinforcing steel 1 is fixed during the precasting process to reinforce the precast beam body 11. When supporting the bottom center of the precast beam body 11, the two strip steels 22 are first snapped onto the outer wall of the H-shaped reinforcing steel 1 at the bottom of the precast beam body 11 to form a fitting state. At this time, the support pads 23 at the four corners of the top support plate 21 can support the bottom of the precast beam body 11. The support pads 23 can be made of high carbon steel, which has high strength, wear resistance and stability. Then the support base 25 is placed on the ground. At the same time, effective connecting parts can be set on the ground, such as pre-embedded connecting seats in the ground. Then the support base 25 and the connecting seats are fixed by multiple bolts. The top support plate 21 and the precast beam body 11 are supported by the first support column 24.

[0026] Furthermore, both sides of the H-shaped reinforcing steel 1 are provided with connecting parts 3, which include: a first C-shaped steel 31, fixedly connected to the outer wall of the precast beam body 11; a tough steel bar 32, one end of which is fixedly connected to the side of the outer wall of the first C-shaped steel 31 away from the precast beam body 11; a second C-shaped steel 33, fixedly connected to the other end of the tough steel bar 32; and a fixing unit 34, which is provided above the precast beam body 11. The first C-shaped steel 31 is fixedly connected to the outer wall of the precast beam body 11 through the fixing unit 34, and the tough steel bar 32 between the second C-shaped steel 33 and the first C-shaped steel 31 forms an expansion joint structure between the two high-pressure precast beam components of the highway bridge. The second C-shaped steel 33 connects to another high-pressure precast beam component of the highway bridge.

[0027] In the specific implementation process, it is worth noting that multiple tough steel bars 32 are provided between the first C-shaped steel 31 and the second C-shaped steel 33, which can leave a gap between the first C-shaped steel 31 and the second C-shaped steel 33. When the two precast beam bodies 11 are spliced, they can be used as expansion joints. When splicing the precast beam bodies 11, the first C-shaped steel 31 is first fixed to the outer wall of the precast beam body 11 through the fixing unit 34. Then, the first C-shaped steel 31 and the second C-shaped steel 33 are fixed together by tough steel bars 32. While ensuring stability, an expansion joint can also be left between the two precast beam bodies 11 to ensure the stability between the two precast beam bodies 11.

[0028] Furthermore, the fixing unit 34 includes: a pre-embedded nut 341, which is fixedly connected to the inner wall of the precast beam body 11; and two sets of fixing bolts 342, which are respectively inserted into the inner walls of the first C-shaped steel 31 and the second C-shaped steel 33. The fixing bolts 342 on the inner wall of the first C-shaped steel 31 are threaded to the inner wall of the pre-embedded nut 341 on the inner wall of the precast beam body 11, thereby fixing the first C-shaped steel 31 and the precast beam body 11 to the second C-shaped steel 33 and another high-pressure precast beam component of the highway bridge.

[0029] In the specific implementation process, it is worth noting that the precast beam body 11 is made of concrete and steel reinforcement. When fixing the first C-shaped steel 31 and the precast beam body 11, it is necessary to leave a pre-embedded nut 341 on the inner wall of the precast beam body 11. By setting the pre-embedded nut 341, the first C-shaped steel 31 and the precast beam body 11 can be fixed by fixing bolts 342.

[0030] Specifically, when using the high-load-bearing precast beam component for this highway bridge, firstly, two strip steels 22 are snapped onto the outer wall of the H-shaped reinforcing steel 1 at the bottom of the precast beam body 11 to form a fitting state. At this time, the support pads 23 at the four corners of the top support plate 21 can support the bottom of the precast beam body 11. Then, the support base 25 is placed on the ground, and the top support plate 21 and the precast beam body 11 are supported by the first support column 24. When the two precast beam bodies 11 are spliced, they can be used as an expansion joint. When splicing the precast beam bodies 11, firstly, the first C-shaped steel 31 is fixed by a single... Yuan 34 is fixed to the outer wall of the precast beam body 11. Then, the first C-shaped steel 31 and the second C-shaped steel 33 are fixed together by tough steel bar 32. While ensuring stability, an expansion joint can also be left between the two precast beam bodies 11 to ensure the stability between the two precast beam bodies 11. The precast beam body 11 is usually made of concrete and steel bars. When fixing the first C-shaped steel 31 and the precast beam body 11, a pre-embedded nut 341 needs to be left on the inner wall of the precast beam body 11. By setting the pre-embedded nut 341, the first C-shaped steel 31 and the precast beam body 11 can be fixed together by fixing bolt 342.

[0031] Example 2: From Figure 1-4 It is known that a reinforcement mechanism 4 is provided on the outer wall of the precast beam body 11. The reinforcement mechanism 4 includes: a reinforcement steel 41, which is fixedly connected to the outer wall of the precast beam body 11; and a guardrail 42, which is fixedly connected to the top of the reinforcement steel 41. The reinforcement steel 41 reinforces the outer wall of the precast beam body 11, and the guardrail 42 enhances the safety of the precast beam body 11.

[0032] In the specific implementation process, it is worth noting that by setting the reinforcing steel 41, the outer walls of the precast beam body 11 can be reinforced on both sides. The reinforcing steel 41 and the precast beam body 11 are fixed together by large rivets. By setting the guardrail 42, the safety of the precast beam body 11 is improved.

[0033] Furthermore, the bottom four corners of the precast beam body 11 are all fixedly connected with second support columns 5. The second support columns 5 are cast in place and can be fixed to the ground by pre-embedded parts. Then the precast beam components are fixed by high-strength bolts.

[0034] In the specific implementation process, it is worth noting that by setting the second support column 5, the bottom four corners of the precast beam body 11 can be supported, thereby improving the stability of the precast beam body 11.

[0035] Specifically, based on the above embodiment one, by setting the reinforcing steel 41, the outer walls of the precast beam body 11 can be reinforced on both sides. By setting the guardrail 42, the safety of the precast beam body 11 can be improved. By setting the second support column 5, the bottom four corners of the precast beam body 11 can be supported, thereby improving the stability of the precast beam body 11.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precast beam component for high load bearing capacity of highway bridges, comprising H-shaped reinforcing steel (1), characterized in that: The inner walls of the H-shaped reinforcing steel (1) are fixedly connected to precast beam bodies (11) on both sides. A support device (2) is provided at the bottom of the H-shaped reinforcing steel (1). The support device (2) includes: A top support plate (21) is disposed below the precast beam body (11); A strip steel (22) is fixedly connected to the top of the top support plate (21); Four support pads (23) are provided and are fixedly connected to the top four corners of the top support plate (21); The first support column (24) is fixedly connected to the bottom of the top support plate (21); The support base (25) is fixedly connected to the bottom of the first support column (24); The bottom of the precast beam body (11) is supported by the strip steel (22) and support pad (23) fixed to the top of the top support plate (21). The support base (25) sits directly on the ground and the top support plate (21) is supported by the first support column (24).

2. The precast beam component for high load-bearing capacity of highway bridges according to claim 1, characterized in that: Both sides of the H-shaped reinforcing steel (1) are provided with connecting parts (3), and the connecting parts (3) include: The first C-shaped steel (31) is fixedly connected to the outer wall of the precast beam body (11); One end of the tough steel bar (32) is fixedly connected to the outer wall of the first C-shaped steel (31) on the side away from the precast beam body (11); The second C-shaped steel (33) is fixedly connected to the other end of the tough steel bar (32); A fixing unit (34) is disposed above the precast beam body (11); The first C-shaped steel (31) is fixed to the outer wall of the precast beam body (11) by a fixing unit (34). The tough steel bar (32) between the second C-shaped steel (33) and the first C-shaped steel (31) forms an expansion joint structure between two high-pressure precast beam components of the highway bridge. The second C-shaped steel (33) connects another high-pressure precast beam component of the highway bridge.

3. A precast beam component for high load-bearing capacity of highway bridges according to claim 2, characterized in that: The fixing unit (34) includes: An embedded nut (341) is fixedly connected to the inner wall of the precast beam body (11); Two sets of fixing bolts (342) are provided, which are respectively inserted into the inner walls of the first C-shaped steel (31) and the second C-shaped steel (33); Among them, the fixing bolts (342) on the inner wall of the first C-shaped steel (31) are threaded to the inner wall of the pre-embedded nut (341) on the inner wall of the precast beam body (11), thereby fixing the first C-shaped steel (31) and the precast beam body (11) to the second C-shaped steel (33) and another high-pressure precast beam component of the highway bridge.

4. A precast beam component for high load-bearing capacity of highway bridges according to claim 1, characterized in that: The outer wall of the precast beam body (11) is provided with a reinforcement mechanism (4), the reinforcement mechanism (4) includes: Reinforcing steel (41) is fixedly connected to the outer wall of the precast beam body (11); The guardrail (42) is fixedly connected to the top of the reinforcing steel (41); The outer wall of the precast beam body (11) is reinforced by the reinforcing steel (41), and the guardrail (42) enhances the safety of the precast beam body (11).

5. A precast beam component for high load-bearing capacity of highway bridges according to claim 1, characterized in that: The four bottom corners of the precast beam body (11) are all fixedly connected with second support columns (5).

Images