Prestressed composite steel beam

Abstract

The utility model provides a kind of prestressed composite steel beam, it is related to composite steel beam technical field, the utility model includes steel frame, the steel frame is the H-shaped steel of the outer surface shape as H, the outer surface of steel frame is equipped with several threaded holes, the both sides of steel frame are provided with reinforcing device, the reinforcing device includes reinforcing plate, the outer surface of reinforcing plate is equipped with several through holes, the inner wall of through hole is slidably inserted with bolt, the inner wall of threaded hole is threadedly connected with bolt, the angle between the end of support plate away from reinforcing plate and reinforcing plate is perpendicular to each other, the utility model is connected by setting reinforcing device, reinforcing plate is adhered to the outer surface of steel frame using bolt, reinforcing plate and steel frame, reinforcing plate and support plate are installed on the outer side of steel frame, the vertical shear prestress of steel frame and the bearing capacity of core are enhanced, and different positions on the surface of steel frame can be reinforced according to the need installation in different positions of steel frame.

Description

Technical Field

[0001] This utility model relates to the field of composite steel beam technology, and in particular to a prestressed composite steel beam. Background Technology

[0002] Prestressed steel beams are steel beams in which stress is pre-applied to the tension zone, so that they are in a state of compression or tension before bearing external loads, thereby improving their stress performance. Introducing prestress into traditional steel structures can improve the stress, rigidity and stability of the original steel structure system, thereby improving its structural performance.

[0003] When prestressing steel beams, materials are usually added to the sides of the beams to increase their strength. However, this method is costly and cannot be used to reinforce specific locations on the sides of the beams according to actual needs. This results in prestressed composite steel beams having insufficient stability and poor installation flexibility. Utility Model Content

[0004] The purpose of this utility model is to address the problem that when prestressing steel beams is improved, materials are usually added to the sides of the steel beams to increase their strength. However, this method is costly and cannot be used to reinforce specific locations on the sides of the steel beams according to actual needs, resulting in insufficient stability and poor installation flexibility in the use of prestressed composite steel beams. Therefore, this utility model proposes a prestressed composite steel beam.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a prestressed composite steel beam, comprising a steel frame, wherein the steel frame is an H-shaped steel with an H-shaped outer surface, and the outer surface of the steel frame is provided with a plurality of threaded holes, which are linearly distributed on the outer surface of the steel frame, and the two sides of the steel frame are provided with a reinforcement device for reinforcing the surface of the steel frame.

[0006] Preferably, the reinforcement device includes:

[0007] A reinforcing plate has several through holes on its outer surface. Bolts are slidably inserted into the inner walls of the through holes, and the bolts are threadedly connected to the inner walls of the threaded holes.

[0008] Support plates are fixed at the top and bottom ends of a reinforcing plate. The end of the support plate closer to the reinforcing plate forms a certain wide angle with the reinforcing plate, while the end of the support plate farther from the reinforcing plate is perpendicular to the reinforcing plate.

[0009] The effect achieved by the above components is as follows: When reinforcing the side of the composite steel beam, a reinforcing plate is attached to the outer surface of the steel frame, and the two support plates at the upper and lower ends of the reinforcing plate, away from the reinforcing plate, abut against the upper and lower sides of the steel frame respectively. The reinforcing plate is pushed to move and fit tightly against the surface of the steel frame. The reinforcing plate is moved so that the position of the through hole on the outer surface of the reinforcing plate is aligned with the position of the threaded hole on the outer surface of the steel frame. A bolt is inserted through the through hole on the outer surface of the reinforcing plate into the threaded hole. The bolt is rotated so that the bolt is threaded into the inner wall of the threaded hole, thus fixing the reinforcing plate to the outside of the steel frame. The reinforcing plate and the support plates reinforce the outer side of the steel frame and increase the strength of the steel frame.

[0010] Preferably, the top edge of the support plate is arc-shaped.

[0011] The effect achieved by the above components is that by setting the top edge of the support plate to be arc-shaped, when the reinforcing plate and the support plate are inserted into one side of the steel frame, the arc-shaped edge of the support plate surface makes it easier for them to contact the surface of the steel frame and enter the interior of the steel frame.

[0012] Preferably, two pads are fixedly connected to the side of the reinforcing plate away from the support plate, and the pads are made of rubber.

[0013] The effect achieved by the above components is that when the side of the reinforcing plate with the rubber pad is attached to the outer surface of the steel frame and the reinforcing plate is pushed to move, the distance of movement of the reinforcing plate can be more precisely controlled by the rubber pad, which makes it easier to align the position of the through hole and the threaded hole.

[0014] Preferably, the reinforcing plate has auxiliary grooves on both sides, and the inner wall of the auxiliary grooves is semi-circular.

[0015] The effect achieved by the above-mentioned components is that the reinforcing plate can be more easily grasped and disassembled by pinching the semi-circular auxiliary grooves on both sides of the reinforcing plate.

[0016] Preferably, a plurality of reinforcing devices are provided on one side of the reinforcing plate. Each reinforcing device includes a rectangular rod with a circular hole on one side and a slot on one side of the support plate. The size and shape of the slot are adapted to the size and shape of the upper and lower ends of the rectangular rod.

[0017] The effect achieved by the above components is as follows: When installing the reinforcement device on one side of the steel frame, after attaching one side of the reinforcing plate to the outer surface of the steel frame, the upper and lower ends of several rectangular rods can be respectively inserted into the grooves on the support plate surfaces at the upper and lower ends of the reinforcing plate. Then, bolts are used to thread the bolts through the through holes and round holes on the outer surface of the rectangular rods and the reinforcing plate to the threaded holes of the steel frame. The rectangular rods can further support and reinforce the two support plates on one side of the reinforcing plate, thereby improving the reinforcement effect of the reinforcement device.

[0018] Preferably, two support blocks are fixedly connected to one side of the rectangular rod, and the support blocks and the rectangular rod form a certain angle.

[0019] The effect achieved by the above components is that when the rectangular rod is installed on one side of the reinforcing plate, one end of the support block will abut against the outer surface of the reinforcing plate. The support block can further support the side of the rectangular rod close to the reinforcing plate, thereby improving the surface strength and support effect of the rectangular rod.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] In this utility model, by setting up a reinforcement device, the reinforcing plate is attached to the outer surface of the steel frame and bolts are used to connect the reinforcing plate to the steel frame. The reinforcing plate and the support plate are installed on the outside of the steel frame, which enhances the vertical shear prestress of the steel frame and the load-bearing capacity at the core. It can also be installed at different positions on the steel frame as needed to reinforce different positions on the surface of the steel frame. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the steel frame of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the support plate of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the rectangular rod of this utility model.

[0026] Legend: 1. Steel frame; 2. Reinforcing device; 3. Strengthening device; 4. Threaded hole; 21. Reinforcing plate; 22. Support plate; 23. Through hole; 24. Bolt; 25. Shim strip; 26. Auxiliary groove; 31. Slot; 32. Rectangular rod; 33. Round hole; 34. Support block. Detailed Implementation

[0027] Example 1, as Figure 1-2 As shown, a prestressed composite steel beam includes a steel frame 1, which is an H-shaped steel with an H-shaped outer surface. The outer surface of the steel frame 1 is provided with a plurality of threaded holes 4, which are linearly distributed on the outer surface of the steel frame 1. Reinforcing devices 2 are provided on both sides of the steel frame 1 to reinforce the surface of the steel frame 1.

[0028] Reference Figure 1-3As shown in this embodiment: the reinforcing device 2 includes a reinforcing plate 21. Several through holes 23 are formed on the outer surface of the reinforcing plate 21. Bolts 24 are slidably inserted into the inner wall of the through holes 23. The bolts 24 are threadedly connected to the inner wall of the threaded holes 4. Two support plates 22 are fixed to the upper and lower ends of a reinforcing plate 21. The end of the support plate 22 closest to the reinforcing plate 21 forms a certain wide angle with the reinforcing plate 21, while the end of the support plate 22 furthest from the reinforcing plate 21 is perpendicular to the reinforcing plate 21. When reinforcing the side of the composite steel beam, a reinforcing plate 21 is attached to the outer surface of the steel frame 1, so that the ends of the two support plates 22 furthest from the reinforcing plate 21 respectively abut against the upper and lower sides of the steel frame 1. Pushing the reinforcing plate 21 moves it to press it tightly against the surface of the steel frame 1. Moving the reinforcing plate 21 strengthens the steel frame 1. The position of the through hole 23 on the outer surface of plate 21 is aligned with the position of the threaded hole 4 on the outer surface of steel frame 1. Bolt 24 is inserted through the through hole 23 on the outer surface of reinforcing plate 21 into the threaded hole 4. The bolt 24 is rotated to make the bolt 24 threadedly connected to the inner wall of the threaded hole 4, thus fixing the reinforcing plate 21 to the outside of steel frame 1. The side of the outer surface of steel frame 1 is reinforced by reinforcing plate 21 and support plate 22 to increase the strength of steel frame 1. By setting up the reinforcement device 2, the reinforcing plate 21 is attached to the outer surface of steel frame 1 and the bolt 24 is used to connect the reinforcing plate 21 to steel frame 1. The reinforcing plate 21 and support plate 22 are installed on the outside of steel frame 1 to enhance the vertical shear prestress of steel frame 1 and the bearing capacity at the core. They can also be installed at different positions on the surface of steel frame 1 as needed to reinforce different positions on the surface of steel frame 1.

[0029] Reference Figure 1-3 As shown in this embodiment: the top edge of the support plate 22 is arc-shaped. By setting the top edge of the support plate 22 to be arc-shaped, when the reinforcing plate 21 and the support plate 22 are inserted into the steel frame 1, the arc-shaped edge of the support plate 22 is more likely to contact the surface of the steel frame 1 and enter the interior of the steel frame 1. Two pads 25 are fixedly connected to the side of the reinforcing plate 21 away from the support plate 22. The pads 25 are made of rubber. When the side of the reinforcing plate 21 with the rubber pads 25 is attached to the outer surface of the steel frame 1 and the reinforcing plate 21 is pushed to move, the rubber pads 25 can more accurately control the distance of the reinforcing plate 21 to align the position of the through hole 23 and the threaded hole 4. The reinforcing plate 21 has auxiliary grooves 26 on both sides. The inner wall of the auxiliary grooves 26 is semi-circular. By pinching the semi-circular auxiliary grooves 26 on both sides of the reinforcing plate 21, it is easier to pinch the reinforcing plate 21 for assembly and disassembly.

[0030] Reference Figure 1-4As shown in this embodiment: a plurality of reinforcing devices 3 are provided on one side of the reinforcing plate 21. The reinforcing device 3 includes a rectangular rod 32, a circular hole 33 is opened on one side of the rectangular rod 32, and a slot 31 is opened on one side of the support plate 22. The internal size and shape of the slot 31 are adapted to the size and shape of the upper and lower ends of the rectangular rod 32. When installing the reinforcing device 2 on one side of the steel frame 1, after the reinforcing plate 21 is attached to the outer surface of the steel frame 1, the upper and lower ends of a plurality of rectangular rods 32 can be respectively inserted into the slots 31 on the surface of the support plate 22 at the upper and lower ends of the reinforcing plate 21. Then, bolts 24 are used to pass through the rectangular rods 32 and... The through holes 23 and round holes 33 on the outer surface of the reinforcing plate 21 connect the bolt 24 to the threaded hole 4 of the steel frame 1. The rectangular rod 32 can further support and reinforce the two support plates 22 on one side of the reinforcing plate 21, thereby improving the reinforcement effect of the reinforcing device 2. Two support blocks 34 are fixedly connected to one side of the rectangular rod 32. The support blocks 34 and the rectangular rod 32 form a certain angle. When the rectangular rod 32 is installed on one side of the reinforcing plate 21, one end of the support block 34 will abut against the outer surface of the reinforcing plate 21. The support block 34 can further support the side of the rectangular rod 32 close to the reinforcing plate 21, thereby improving the surface strength and support effect of the rectangular rod 32.

[0031] Working principle: When reinforcing the side of the composite steel beam, a reinforcing plate 21 is attached to the outer surface of the steel frame 1, so that the ends of the two support plates 22 at the upper and lower ends of the reinforcing plate 21, away from the reinforcing plate 21, abut against the upper and lower sides of the steel frame 1 respectively. Pushing the reinforcing plate 21 to move it and make it fit tightly against the surface of the steel frame 1, moving the reinforcing plate 21 so that the position of the through hole 23 on the outer surface of the reinforcing plate 21 is aligned with the position of the threaded hole 4 on the outer surface of the steel frame 1. Then, several rectangular rods 32 are respectively clamped at the upper and lower ends on one side of the reinforcing plate 21. Insert the reinforcing plate 21 into the groove 31 on the surface of the support plate 22 at both ends of the reinforcing plate 21, and then use bolts 24 to thread the bolts 24 into the threaded holes 4 of the steel frame 1 through the through holes 23 and round holes 33 on the outer surface of the rectangular rod 32 and the reinforcing plate 21, thereby fixing the reinforcing plate 21 to the outside of the steel frame 1. The reinforcing plate 21 and the support plate 22 reinforce the outer side of the steel frame 1 and increase the strength of the steel frame 1. The rectangular rod 32 can further support and reinforce the two support plates 22 on one side of the reinforcing plate 21.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A prestressed composite steel beam, comprising a steel frame (1), characterized in that: The steel frame (1) is an H-shaped steel with an H-shaped outer surface. Several threaded holes (4) are provided on the outer surface of the steel frame (1), and the threaded holes (4) are linearly distributed on the outer surface of the steel frame (1). Reinforcing devices (2) are provided on both sides of the steel frame (1) to reinforce its surface. The reinforcing devices (2) include: A reinforcing plate (21) has several through holes (23) on its outer surface. Bolts (24) are slidably inserted into the inner wall of the through holes (23). The bolts (24) are threadedly connected to the inner wall of the threaded hole (4). Support plate (22), two support plates (22) are fixed at the upper and lower ends of a reinforcing plate (21). The end of the support plate (22) closer to the reinforcing plate (21) forms a certain wide angle with the reinforcing plate (21), and the end of the support plate (22) further away from the reinforcing plate (21) is perpendicular to the reinforcing plate (21).

2. The prestressed composite steel beam according to claim 1, characterized in that: The top edge of the support plate (22) is arc-shaped.

3. A prestressed composite steel beam according to claim 2, characterized in that: Two pads (25) are fixedly connected to the side of the reinforcing plate (21) away from the support plate (22), and the pads (25) are made of rubber.

4. A prestressed composite steel beam according to claim 3, characterized in that: The reinforcing plate (21) has auxiliary grooves (26) on both sides, and the inner wall of the auxiliary grooves (26) is semi-circular.

5. A prestressed composite steel beam according to claim 4, characterized in that: A number of reinforcing devices (3) are provided on one side of the reinforcing plate (21). The reinforcing device (3) includes a rectangular rod (32). A round hole (33) is opened on one side of the rectangular rod (32). A slot (31) is opened on one side of the support plate (22). The internal size and shape of the slot (31) are adapted to the size and shape of the upper and lower ends of the rectangular rod (32).

6. A prestressed composite steel beam according to claim 5, characterized in that: Two support blocks (34) are fixedly connected to one side of the rectangular rod (32), and the support blocks (34) and the rectangular rod (32) form a certain angle.

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