Strengthening components, strengthening devices and strengthening methods for reinforced concrete beams

Abstract

This invention relates to the field of reinforced concrete beam reinforcement technology, and particularly to reinforcement components, devices, and methods for reinforced concrete beams. The reinforcement component is used to reinforce a crossbeam positioned between two supporting structural members, and includes an inverted V-shaped frame and multiple cranks. The inverted V-shaped frame is disposed on the side of the crossbeam, with both ends pressing against the two supporting structural members. The cranks are disposed on the inverted V-shaped frame. The upper horizontal axis of the cranks is unidirectionally rotatably connected to the inverted V-shaped frame, and the lower horizontal axis of the cranks is located at the bottom of the crossbeam. Rotating the upper horizontal axis generates a vertically upward thrust from the bottom surface of the crossbeam. This invention can be installed and fixed without bolts, has low installation difficulty, and requires minimal installation space.

Description

Technical Field

[0001] This invention relates to the field of reinforced concrete beam reinforcement technology, specifically to reinforcement components, reinforcement devices, and reinforcement methods for reinforced concrete beams. Background Technology

[0002] Reinforced concrete beams that have been used for a long time may be damaged due to factors such as heavy loads, resulting in a decrease in their load-bearing capacity. To restore their load-bearing capacity or to increase the load-bearing capacity of reinforced concrete beams, it is necessary to reinforce them.

[0003] For example, Chinese invention patent application CN106869520A discloses a reinforced concrete beam reinforcement device and its construction method, including a beam supported by two columns or walls. A pair of U-shaped steel plates are inverted on the underside of the beam, and the two side plates of the U-shaped steel plates are fixed to the front and rear side walls of the beam. A straight box-shaped steel pipe is connected between the two U-shaped steel plates, and the straight box-shaped steel pipe is hinged to the U-shaped steel plates at both ends. A pair of clamping plates are provided on the columns or walls to clamp the columns or walls. An arc-shaped box-shaped steel pipe is connected between the clamping plate located on the inner side of the columns or walls and the corresponding U-shaped steel plate. One end of the arc-shaped box-shaped steel pipe is hinged to the clamping plate on the inner side of the columns or walls, and the other end is hinged to the U-shaped steel plate on the corresponding side. Prestressed steel strands are connected between the two clamping plates located on the outer side of the two columns or walls. This reinforced concrete beam strengthening device is easy to construct and has good structural stress performance. It avoids additional horizontal lateral forces on columns or walls, reduces the deflection in the mid-span of the beam, and effectively supports the beam, thereby improving the beam's load-bearing capacity.

[0004] For example, Chinese utility model patent CN213142812U discloses a reinforcement structure for a reinforced concrete T-beam, comprising two webs and two flanges. The two flanges are respectively fixed to the upper ends of the two webs. The key feature is that a T-shaped plate is fixedly connected to the bottom of both flanges, and an arc-shaped plate is fixedly connected to the bottom of the T-shaped plate. Both ends of the arc-shaped plate are connected to the two webs via a connecting mechanism. An inverted V-shaped bracket is fixedly connected to the concave surface of the arc-shaped plate. Two threaded rods pass through the webs and the two limiting plates. Vertical plates are fixedly connected to the bottom of both ends of the arc-shaped plate. Nut sets are fitted onto both ends of the two threaded rods, and the nut sets on both sides abut against the limiting plates and vertical plates, respectively. This utility model has a reasonable structure, is easy to construct, and has a short construction period. It connects the separate T-beams into a whole to coordinate deformation and bear live loads, thereby improving the lateral distribution coefficient of the bridge and increasing its load-bearing capacity.

[0005] The reinforcement methods employed in the aforementioned patents or patent applications all require the use of fastening bolts. This necessitates drilling holes in the beam structure or its supporting structure, and then using fastening bolts to install and fix the reinforcement structure in the appropriate position to achieve the reinforcement of the beam structure. While this method achieves the reinforcement purpose, it causes irreparable damage to the beam structure or its supporting structure. Furthermore, over time, the holes used to install the fastening bolts may gradually enlarge, eventually leading to damage. Moreover, this reinforcement method increases the difficulty of practical application; for example, drilling holes in concrete beams is challenging. Additionally, the reinforcement structures provided by the aforementioned patents or patent applications require significant vertical space, making it impossible to reinforce beams in certain confined spaces. Summary of the Invention

[0006] The purpose of this invention is to provide reinforcement components, reinforcement devices and reinforcement methods for reinforced concrete beams to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a reinforcement component for reinforced concrete beams, used to reinforce a crossbeam disposed between two supporting structural members, comprising an inverted V-shaped frame and multiple cranks;

[0008] The inverted V-shaped frame is disposed on the side of the crossbeam, and the two ends of the inverted V-shaped frame press against the two supporting structural members;

[0009] The crank is mounted on the inverted V-shaped frame;

[0010] The high horizontal shaft of the crank is unidirectionally rotatably connected to the inverted V-shaped frame, and the low horizontal shaft of the crank is located at the bottom of the crossbeam;

[0011] Rotating the high horizontal axis can generate a vertically upward thrust from the bottom surface of the beam through the low horizontal axis.

[0012] Preferably, the inverted V-shaped frame includes a hinge seat and connecting plates hinged to both ends of the hinge seat, and the crank is detachably connected to the connecting plates;

[0013] The height of the upper end face of the hinge is lower than the height of the upper end face of the crossbeam.

[0014] Preferably, a support frame is provided at the end of the connecting plate away from the hinge seat;

[0015] The support frame includes a first angle steel and a rotating shaft rotatably connected to the first angle steel via a bearing seat. The length direction of the first angle steel is parallel to the axial direction of the rotating shaft, and the connecting plate is fixedly connected to the end of the rotating shaft.

[0016] Preferably, there are two inverted V-shaped frames, which are symmetrically arranged on both sides of the crossbeam.

[0017] Preferably, the high-position horizontal shaft is unidirectionally rotatably connected to a U-shaped plate via a one-way bearing, and the U-shaped plate is detachably mounted on the connecting plate.

[0018] Preferably, the connecting plate has several through holes;

[0019] The two parallel flat sections of the U-shaped plate are respectively provided with insertion holes and screw holes. The diameter of the insertion holes is the same as that of the through holes, and the diameter of the screw holes is smaller than that of the through holes.

[0020] The positioning post passes through the through hole and the insertion hole, and a threaded post fixed at one end of the positioning post is threaded into the inside of the threaded hole.

[0021] Preferably, the crank further includes a connecting handle fixedly connected between the high horizontal shaft and the low horizontal shaft;

[0022] The end of the high horizontal axis away from the connecting handle is formed into a hexagonal prism.

[0023] Preferably, a base support is provided between the lower horizontal axis and the bottom surface of the crossbeam;

[0024] The base includes two second angle steels and several connecting pieces fixed between the two second angle steels;

[0025] The second angle steel is attached to the bottom two corner positions along the length of the crossbeam.

[0026] A reinforcement device for reinforced concrete beams, comprising the aforementioned reinforcement components for reinforced concrete beams.

[0027] A method for strengthening a reinforced concrete beam, the method being based on the aforementioned strengthening components for reinforced concrete beams, includes the following steps:

[0028] S1. Press the two first angle steels against the right corner formed between the bottom of the crossbeam and the supporting structure;

[0029] S2. Fix the two ends of the two connecting plates on the same V-shaped frame that are far apart to the two rotating shafts respectively;

[0030] S3. Install the crankshaft into the appropriate position on the connecting plate:

[0031] S4. Place the two second angle steels against the bottom two corners along the length of the beam.

[0032] S5. Rotate the high horizontal shaft to drive the low horizontal shaft located below the beam to rotate and move upward until the second angle steel is pressed tightly against the bottom of the beam.

[0033] S6. Weld the connecting piece tightly to the lower horizontal axis and onto the second angle steel.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] By placing the inverted V-shaped bracket on the side of the crossbeam, the dependence of the reinforcement components on the size of the space at the bottom of the crossbeam can be reduced. This allows the reinforcement components to be installed in a smaller space at the bottom of the crossbeam. Moreover, this solution utilizes the cooperation between the inverted V-shaped bracket and a crank that can rotate in one direction. By simply rotating the high horizontal shaft of the crank, the low horizontal shaft of the crank is driven to move upward, which generates a vertical upward thrust from the bottom surface of the crossbeam, thereby completing the reinforcement of the crossbeam. At the same time, since the low horizontal shaft abuts against the bottom surface of the crossbeam, the high horizontal shaft generates a downward thrust. This downward thrust is transmitted and converted by the inverted V-shaped bracket, which can significantly increase the lateral clamping force acting on the two supporting structural members at both ends of the inverted V-shaped bracket. In other words, the presence of the crank not only provides a basis for placing the inverted V-shaped bracket on the side of the crossbeam, but also converts the upward thrust acting on the bottom of the crossbeam into a downward thrust pushing the inverted V-shaped bracket from the top, thereby fixing the position of the inverted V-shaped bracket. This allows the entire reinforcement component to be installed and fixed without bolts, making the installation process simple. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a partial structural diagram of the present invention;

[0038] Figure 3 For the present invention Figure 2 A schematic diagram of the bottom view structure;

[0039] Figure 4 For the present invention Figure 2 A schematic diagram of the structure viewed from below;

[0040] Figure 5 This is a three-dimensional structural diagram of the reinforcement component of the present invention;

[0041] Figure 6 This is a schematic diagram of the support frame of the present invention;

[0042] Figure 7 This is a schematic diagram of the inverted V-shaped frame of the present invention;

[0043] Figure 8 This is a schematic diagram of the structure of the base of the present invention;

[0044] Figure 9 This is a schematic diagram of the U-shaped plate structure of the present invention;

[0045] Figure 10This is a schematic diagram of the crank mechanism of the present invention;

[0046] Figure 11 This is a cross-sectional three-dimensional structural diagram of the U-shaped plate of the present invention.

[0047] In the picture:

[0048] 1. Reinforcing component; 11. Inverted V-shaped frame; 111. Connecting plate; 112. Hinge seat; 113. Through hole; 12. Support frame; 121. First angle steel; 122. Rotating shaft; 123. Bearing seat; 13. Crank; 131. Connecting handle; 132. High horizontal shaft; 133. Low horizontal shaft; 134. Hexagonal column; 135. U-shaped plate; 1351. Insertion hole; 1352. Screw hole; 136. One-way bearing; 137. Positioning column; 138. Threaded column; 14. Base support; 141. Second angle steel; 142. Connecting piece;

[0049] 2. Supporting structural components;

[0050] 3. Crossbeam. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Please see Figure 1-11 The present invention provides a technical solution:

[0053] A reinforcement component 1 for reinforced concrete beams is provided for reinforcing a crossbeam 3 positioned between two supporting structural members 2. The supporting structural members 2 can be vertical concrete columns or vertical wall structures, and are not limited thereto. The function of the reinforcement component 1 is to utilize the two supporting structural members 2 to generate an upward supporting force on the crossbeam 3, thereby increasing the load-bearing capacity of the crossbeam 3 in the vertical direction.

[0054] The specific structure of reinforcement component 1 is described in detail below.

[0055] like Figures 1 to 5 As shown, the reinforcing component 1 includes an inverted V-shaped frame 11 and multiple cranks 13. Wherein, as... Figures 1 to 5 As shown, the crank 13 is mounted on the inverted V-shaped bracket 11. That is, the inverted V-shaped bracket 11 is used to support the crank 13, so that the position of the inverted V-shaped bracket 11 can be located in a suitable position.

[0056] like Figures 1 to 4As shown, the inverted V-shaped bracket 11 is installed on the side of the crossbeam 3. In this way, the dependence of the reinforcing component 1 on the size of the bottom space of the crossbeam 3 can be reduced, so that the crossbeam 3 only requires a small bottom space for the installation of the reinforcing component 1.

[0057] Furthermore, the two ends of the inverted V-shaped frame 11 press against the two supporting structural members 2, such as Figure 1 As shown, at this time, the inverted V-shaped frame 11 can be fixed in height by its own weight, with both ends of the inverted V-shaped frame 11 pressed against the two supporting structural members 2.

[0058] like Figure 9 and Figure 10 As shown, the high-position horizontal shaft 132 of the crank 13 is unidirectionally rotatably connected to the inverted V-shaped frame 11, as... Figure 4 As shown, the lower horizontal shaft 133 of the crank 13 is located at the bottom of the crossbeam 3; rotating the upper horizontal shaft 132 can generate a vertically upward thrust from the bottom surface of the crossbeam 3 by the lower horizontal shaft 133.

[0059] The function of crank 13 is as follows: The reason why the inverted V-shaped frame 11 is set on the side of the crossbeam 3 is because of the existence of crank 13. Specifically, crank 13 can convert the upward thrust of the lower horizontal shaft 133 acting on the bottom of the crossbeam 3 into the downward thrust of the higher horizontal shaft 132 pushing down the V-shaped frame 11. The greater the downward thrust of the higher horizontal shaft 132 pushing down the V-shaped frame 11, the greater the upward thrust of the lower horizontal shaft 133 acting on the bottom of the crossbeam 3. At the same time, it also indicates that the greater the lateral clamping force of the two ends of the inverted V-shaped frame 11 acting on the two supporting structural members 2, the more stable the inverted V-shaped frame 11 is.

[0060] In this implementation, two inverted V-shaped frames 11 are provided, symmetrically arranged on both sides of the crossbeam 3. Here, "both sides" refers to the front and rear sides, as shown below. Figure 1 As shown. At the same time, the axial length of the lower horizontal axis 133 is less than half the width of the crossbeam 3 in the front-to-back direction.

[0061] The above-described solution, by placing the inverted V-shaped bracket 11 on the side of the crossbeam 3, reduces the dependence of the reinforcing component 1 on the size of the bottom space of the crossbeam 3. This allows the crossbeam 3 to require only a small bottom space for the installation of the reinforcing component 1. Furthermore, this solution utilizes the cooperation between the inverted V-shaped bracket 11 and the unidirectional rotatable crank 13. By simply rotating the high horizontal shaft 132 of the crank 13, the low horizontal shaft 133 of the crank 13 is driven upward, generating a vertically upward thrust from the bottom surface of the crossbeam 3, thereby reinforcing the crossbeam 3. Simultaneously, because the low horizontal shaft 133 abuts against the crossbeam 3... The bottom surface causes the high-position horizontal shaft 132 to generate a downward thrust. This downward thrust is transmitted and transformed through the inverted V-shaped frame 11, which can significantly increase the lateral clamping force acting on the two supporting structural members 2 at both ends of the inverted V-shaped frame 11. That is, the existence of the crank 13 not only provides a foundation for the inverted V-shaped frame 11 to be set on the side of the crossbeam 3, but also can transform the upward thrust acting on the bottom of the crossbeam 3 into a downward thrust that pushes the inverted V-shaped frame 11 down from the top, thereby fixing the position of the inverted V-shaped frame 11. This allows the entire reinforcement assembly 1 to be installed and fixed without bolts, making the installation less difficult.

[0062] like Figure 7 As shown, the inverted V-shaped frame 11 includes a hinge base 112 and connecting plates 111 hinged to both ends of the hinge base 112. The hinge base 112 is an inverted U-shaped plate, and the connecting plate 111 is a long, strip-shaped plate structure. One end of the connecting plate 111 near the hinge base 112 is hinged to the inside of the hinge base 112 by a pin. Both the connecting plate 111 and the hinge base 112 can be made of steel.

[0063] The crank 13 is detachably connected to the connecting plate 111, allowing for easy adjustment of the position of the crank 13 according to actual conditions.

[0064] like Figure 1 As shown, the height of the upper surface of the hinge 112 is lower than the height of the upper surface of the crossbeam 3. This ensures that the wall or other structures on the top surface of the crossbeam 3 do not restrict the installation of the reinforcing component 1.

[0065] like Figure 7 As shown, a support frame 12 is provided at the end of the connecting plate 111 away from the hinge seat 112. Specifically, as... Figure 6As shown, the support frame 12 includes a first angle steel 121 and a rotating shaft 122 rotatably connected to the first angle steel 121 via a bearing seat 123. The length direction of the first angle steel 121 is parallel to the axial direction of the rotating shaft 122. The connecting plate 111 is fixedly connected to the end of the rotating shaft 122. The support frame 12 increases the contact area between the connecting plate 111 and the support structure 2, improving the stability of the connecting plate 111. Furthermore, the first angle steel 121, with its two perpendicular sides abutting against the direct corner between the support structure 2 and the crossbeam 3, further enhances the stability of the connecting plate 111. The rotating shaft 122, rotatably connected to the first angle steel 121, allows the connecting plate 111 to be welded to the rotating shaft 122.

[0066] like Figure 9 and Figure 10 As shown, the high-position horizontal shaft 132 is connected to the U-shaped plate 135 through the one-way bearing 136, so that the high-position horizontal shaft 132 can only rotate in one direction. Of course, the high-position horizontal shaft 132 can also achieve one-way rotation through the bearing and ratchet mechanism. The U-shaped plate 135 is detachably installed on the connecting plate 111.

[0067] Specifically, the detachable installation method of U-shaped plate 135 is as follows:

[0068] like Figure 9 and Figure 10 As shown, the connecting plate 111 has several through holes 113; the two parallel flat sections of the U-shaped plate 135 have insertion holes 1351 and screw holes 1352 respectively. The insertion holes 1351 and the through holes 113 have the same diameter, and the screw holes 1352 have a smaller diameter than the through holes 113; the positioning pin 137 passes through the through holes 113 and the insertion holes 1351, and the threaded pin 138 fixed at one end of the positioning pin 137 is threaded into the screw hole 1352.

[0069] The connection plate 111 is provided with several through holes 113. On the one hand, it can strengthen the connection plate 111 and improve its bending resistance, and at the same time reduce the weight of the connection plate 111, making the installation of the connection plate 111 more convenient. On the other hand, the through holes 113 also provide a basis for the installation and position adjustment of the U-shaped plate 135.

[0070] like Figure 9 and Figure 10 As shown, the crank 13 also includes a connecting handle 131 fixedly connected between the high horizontal shaft 132 and the low horizontal shaft 133; a hexagonal prism 134 is formed at the end of the high horizontal shaft 132 away from the connecting handle 131. The design of the hexagonal prism 134 makes it convenient for workers to use a matching hexagonal wrench or the like to drive the high horizontal shaft 132 to rotate, thus achieving the purpose of saving effort.

[0071] like Figures 1 to 5 as well as Figure 8 As shown, a base support 14 is provided between the lower horizontal axis 133 and the bottom surface of the crossbeam 3; furthermore, as Figure 8 As shown, the base 14 includes two second angle steels 141 and several connecting pieces 142 fixed between the two second angle steels 141; as Figures 1 to 4 As shown, the second angle steel 141 is attached to the bottom two corners of the crossbeam 3 along its length.

[0072] In the above scheme, the lower horizontal axis 133 first presses the second angle steel 141 against the bottom of the crossbeam 3, and then the connecting piece 142 is fixed (e.g., by welding). Figure 4 As shown, the connecting piece 142 can not only be used to connect the two second angle steels 141, but also to limit the position of the lower horizontal shaft 133, thereby preventing the lower horizontal shaft 133 from rotating. This can reduce the force borne by the one-way bearing 136, extend the service life of the one-way bearing 136, and ensure the long-term stability of the entire reinforcement assembly 1.

[0073] A reinforcement device for reinforced concrete beams, comprising the aforementioned reinforcement components for reinforced concrete beams.

[0074] A method for strengthening a reinforced concrete beam, the method being based on the aforementioned strengthening components for reinforced concrete beams, includes the following steps:

[0075] S1. Press the two first angle steels 121 against the right corner formed between the bottom of the crossbeam 3 and the supporting structure 2 respectively;

[0076] S2. Fix the two ends of the two connecting plates 111 on the same V-shaped frame 11 that are far apart to the two rotating shafts 122 respectively;

[0077] S3. Install the crank 13 into the appropriate position on the connecting plate 111:

[0078] S4. Place the two second angle steels 141 against the bottom two corners of the crossbeam 3 along its length.

[0079] S5. Rotate the high horizontal shaft 132 to drive the low horizontal shaft 133 located below the crossbeam 3 to rotate and move upward until the second angle steel 141 is pressed tightly against the bottom of the crossbeam 3.

[0080] S6. Weld the connecting piece 142 to the second angle steel 141, close to the lower horizontal axis 133.

[0081] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcement assembly for a reinforced concrete beam for reinforcing a beam disposed between two support members, characterised in that, Includes an inverted V-shaped frame and multiple cranks; The inverted V-shaped frame is disposed on the side of the crossbeam, and the two ends of the inverted V-shaped frame press against the two supporting structural members; The crank is mounted on the inverted V-shaped frame; The high horizontal shaft of the crank is unidirectionally rotatably connected to the inverted V-shaped frame, and the low horizontal shaft of the crank is located at the bottom of the crossbeam; Rotating the high horizontal axis can generate a vertically upward thrust from the bottom surface of the beam through the low horizontal axis. The inverted V-shaped frame includes a hinge seat and connecting plates hinged to both ends of the hinge seat, and the crank is detachably connected to the connecting plates. The height of the upper end face of the hinge is lower than the height of the upper end face of the crossbeam; A support frame is provided at the end of the connecting plate away from the hinge seat; The support frame includes a first angle steel and a rotating shaft rotatably connected to the first angle steel via a bearing seat. The length direction of the first angle steel is parallel to the axial direction of the rotating shaft, and the connecting plate is fixedly connected to the end of the rotating shaft. The high-position horizontal shaft is unidirectionally connected to a U-shaped plate via a one-way bearing, and the U-shaped plate is detachably mounted on the connecting plate. The connecting plate has several through holes; The two parallel flat sections of the U-shaped plate are respectively provided with insertion holes and screw holes. The diameter of the insertion holes is the same as that of the through holes, and the diameter of the screw holes is smaller than that of the through holes. The positioning post passes through the through hole and the insertion hole, and a threaded post fixed at one end of the positioning post is threaded into the inside of the threaded hole.

2. The reinforcing component for reinforced concrete beams according to claim 1, characterized in that, Two inverted V-shaped frames are provided and symmetrically arranged on both sides of the crossbeam.

3. The reinforcing component for reinforced concrete beams according to claim 1, characterized in that, The crank also includes a connecting handle fixedly connected between the high horizontal shaft and the low horizontal shaft; The end of the high horizontal axis away from the connecting handle is formed into a hexagonal prism.

4. The reinforcing component for reinforced concrete beams according to claim 1, characterized in that, A base support is provided between the low-position horizontal axis and the bottom surface of the horizontal beam; The base includes two second angle steels and several connecting pieces fixed between the two second angle steels; The second angle steel is attached to the bottom two corner positions along the length of the crossbeam.

5. A reinforcement device for reinforced concrete beams, characterized in that, The reinforcement device includes the reinforcement components for reinforced concrete beams as described in any one of claims 1-4.

6. A method for strengthening reinforced concrete beams, characterized in that, The reinforcement method, based on the reinforcement assembly for reinforced concrete beams according to any one of claims 1-4, includes the following steps: S1. Press the two first angle steels against the right corner formed between the bottom of the crossbeam and the supporting structure; S2. Fix the two ends of the two connecting plates on the same V-shaped frame that are far apart to the two rotating shafts respectively; S3. Install the crankshaft into the appropriate position on the connecting plate: S4. Place the two second angle steels against the bottom two corners along the length of the beam. S5. Rotate the high horizontal shaft to drive the low horizontal shaft located below the beam to rotate and move upward until the second angle steel is pressed tightly against the bottom of the beam. S6. Weld the connecting piece tightly to the lower horizontal axis and onto the second angle steel.

Images