A precast beam top slab shear reinforcement device

Abstract

This application relates to a precast beam top slab shear reinforcement device, comprising a positioning square tube with a first transverse groove, the end of which extends toward the bottom surface and one side of the tube. A second longitudinal groove is provided on one side of the first groove, its end communicating with the end of the first groove. A third transverse groove is provided on one side of the second groove, one end of which communicates with the second groove, and its other end extends toward the bottom surface. A connecting assembly is positioned at the top of a pair of positioning square tubes. A crossbar is positioned above the connecting assembly. A suspension assembly is positioned between the connecting assembly and the crossbar, connecting the connecting assembly and the crossbar. This invention effectively prevents shear reinforcement from falling or shifting during construction, while also facilitating concrete pouring and finishing.

Description

Technical Field

[0001] This application relates to the field of shear reinforcement technology, and in particular to a shear reinforcement device for the top slab of a precast beam. Background Technology

[0002] In bridge engineering, to improve the connection strength and shear resistance with the bridge deck structure, transverse "U"-shaped shear reinforcement bars are designed at certain intervals along the length of the top surface of precast beams. Due to spatial constraints, the installation of the U-shaped shear reinforcement bars on the top slab of the precast beam is achieved by spot welding or binding at the intersection with the surface reinforcement bars of the top slab. This leaves the top surface of the beams with only slight fixation at the bottom and no constraint at the top. During subsequent concrete pouring and vibration, the shear reinforcement bars are highly susceptible to displacement or falling off due to the impact of concrete flow, vibration of the vibrator, and finishing and roughening processes. This can seriously affect the structural connection strength and overall load-bearing performance.

[0003] Currently, the reinforcement measures for installed U-shaped shear reinforcement are relatively simple. Generally, two wooden blocks of a certain height are inserted along the length of the precast beam between the surface reinforcement of the top slab and the transverse edge of the U-shaped shear reinforcement to prevent the shear reinforcement from falling off. This reinforcement measure cannot precisely control the height of the U-shaped shear reinforcement, nor can it maintain the spacing between the U-shaped shear reinforcements. Furthermore, because the wooden blocks press down on the surface reinforcement, there is no concrete on the top surface of the top slab reinforcement at the wooden blocks. After the concrete vibration is completed, the wooden blocks need to be removed immediately, the concrete in the gaps filled, and then vibrated, smoothed, and roughened again. Therefore, this method cannot accurately guarantee the longitudinal and transverse planar position and spacing of the shear reinforcement. At the same time, this method is cumbersome to install and dismantle, adding multiple extra procedures and greatly reducing construction efficiency. Utility Model Content

[0004] Therefore, it is necessary to provide a precast beam top slab shear reinforcement device that can accurately reinforce the installed U-shaped shear reinforcement, effectively prevent displacement or falling, and is easy to operate.

[0005] A precast beam top slab shear reinforcement device includes: A positioning square tube is provided with a first transverse groove, the end of which extends toward the bottom surface and one side of the positioning tube. A second longitudinal groove is provided on one side of the first groove, and the end of the second groove is connected to the end of the first groove. A third transverse groove is provided on one side of the second groove, one end of which is connected to the second groove, and the other end extends toward the bottom surface. The first groove, the second groove, and the third groove form a fixing structure for fixing shear reinforcement. Multiple fixing structures are spaced apart along the length direction of the positioning square tube, and a pair of positioning square tubes are symmetrically spaced apart. A connecting component, which is disposed on the top of a pair of locking square tubes and is used to connect the pair of locking square tubes; A crossbar, which is positioned above the connecting assembly, is used to provide a fixed point; A boom assembly is disposed between a connecting component and a crossbar for connecting the connecting component and the crossbar.

[0006] As a preferred embodiment of the precast beam top slab shear reinforcement device in this utility model, the width of the first slot and the second slot is not less than the diameter of the shear reinforcement.

[0007] As a preferred embodiment of the precast beam top slab shear reinforcement device of this utility model, the first slot includes a first part and a second part. The first part is disposed on the bottom surface of the positioning square tube, and its length is the same as the width of the bottom surface of the positioning square tube. The second part is disposed on one side of the positioning square tube, and its length is less than the width of the side.

[0008] As a preferred embodiment of the precast beam top slab shear reinforcement device of this utility model, the second slot includes a third part and a fourth part, the third part and the fourth part are disposed on the same side of the first slot, the third part is disposed on the bottom surface of the positioning square tube and is perpendicular to the first slot, and the fourth part is disposed on the side of the positioning square tube and is perpendicular to the first slot.

[0009] As a preferred embodiment of the precast beam top slab shear reinforcement device in this utility model, one end of the third slot is connected to the end of the fourth part, and the other end faces the bottom surface of the locking square tube.

[0010] As a preferred embodiment of the precast beam top slab shear reinforcement device in this utility model, the width of the third slot is the same as the diameter of the shear reinforcement, and its length is not less than the diameter of the shear reinforcement.

[0011] As a preferred embodiment of the precast beam top slab shear reinforcement device of this utility model, a plurality of the connecting components are spaced apart along the length direction of the positioning square tube, each including a connecting plate, one end of the connecting plate being fixedly connected to the positioning square tube, and the other end being fixedly connected to a triangular plate.

[0012] As a preferred embodiment of the precast beam top slab shear reinforcement device in this utility model, the crossbar is arranged above the connecting assembly, and its end is connected to the templates on both sides of the precast beam.

[0013] As a preferred embodiment of the precast beam top slab shear reinforcement device in this utility model, the hanger assembly includes a hanger rod, one end of which is connected to a triangular plate, and the other end of which passes through a crossbar and is connected to a tapered clamping assembly.

[0014] The beneficial effects of this utility model are: The reinforcing device in this utility model is connected to the templates on both sides of the precast beam through a crossbar, thereby achieving a suspended effect. The locking tube generates a vertically upward pre-tension force on the horizontal edge of the shear reinforcement, preventing the shear reinforcement from falling off during concrete construction, while also facilitating concrete pouring, finishing and other construction work. This invention, through the design of the slot in the square tube, can prevent the shear reinforcement from moving horizontally and avoid positional deviation during construction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the reinforcement device in the embodiments of this application; Figure 2 This is a schematic diagram of the bottom structure of the card slot tube in an embodiment of this application; Figure 3 This is a cross-sectional schematic diagram of the carding tube in use in the embodiments of this application; Figure 4 This is a schematic diagram of the exploded structure of the conical nut in the embodiments of this application; Explanation of reference numerals in the attached figures: 1000, Positioning square tube; 1100, First groove; 1110, First part; 1120, Second part; 1200, Second groove; 1210, Third part; 1220, Fourth part; 1300, Third groove; 2000, Connecting component; 2100, Connecting plate; 2200, Triangular plate; 3000, crossbar; 4000, Booster assembly; 4100, Booster; 4200, Conical clamp assembly; 4210, Conical bolt; 4220, Conical nut; 4230, Waist washer; 4240, Lower nut; 5000, shear reinforcement; 6000, Top slab reinforcement; 7000, Top surface of the concrete slab. Detailed Implementation

[0017] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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 communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0023] like Figures 1 to 4 As shown, an embodiment of this utility model provides a precast beam top slab shear reinforcement device, including a positioning square tube 1000. The positioning square tube 1000 is provided with a transverse first groove 1100, and the end of the first groove 1100 extends toward the bottom surface and one side of the positioning square tube 1000. A longitudinal second groove 1200 is provided on one side of the first groove 1100, and the end of the second groove 1200 is connected to the end of the first groove 1100. A transverse third groove 1300 is provided on one side of the second groove 1200, and one end of the third groove 1300 is connected to the second groove 1200, while the other end extends toward the bottom surface. The first groove 1100, the second groove 1200, and the third groove 1300 are... A fixing structure is formed for fixing the shear reinforcement 5000. Multiple fixing structures are spaced apart along the length of the clamping square tube 1000. The number of fixing structures and the spacing between adjacent fixing structures are the same as the number and spacing of the installed shear reinforcement 5000. A pair of clamping square tubes 1000 are symmetrically spaced apart. A connecting component 2000 is set on top of a pair of clamping square tubes 1000 and is used to connect the pair of clamping square tubes 1000. A crossbar 3000 is set above the connecting component 2000 and is used to provide fixing points. A hanger assembly 4000 is set between the connecting component 2000 and the crossbar 3000 and is used to connect the connecting component 2000 and the crossbar 3000.

[0024] With the help of the crossbar 3000 and the hanger assembly 4000, the positioning square tube 1000 can be placed above the installed shear reinforcement 5000, so that the positioning square tube 1000 does not directly contact the top surface 7000 of the concrete slab. A pair of positioning square tubes 1000 are connected to each other by the connecting assembly 2000, with the spacing being the same as the length of the horizontal side of the shear reinforcement 5000. The side of the positioning square tube 1000, the first slot 1100, the second slot 1200 and the third slot 1300 cooperate to restrict the lateral and longitudinal movement of the shear reinforcement 5000. At the same time, the shear reinforcement 5000 stuck in the third slot 1300 is also restricted vertically. Therefore, the shear reinforcement 5000 is accurately positioned in three dimensions: lateral, longitudinal and vertical.

[0025] As one embodiment of this utility model, please refer to Figure 1 , Figure 2 and Figure 3 The width of the first slot 1100 and the second slot 1200 is not less than the diameter of the shear reinforcement 5000, so as to prevent the shear reinforcement 5000 from being unable to extend into the first slot 1100 and the second slot 1200.

[0026] As one embodiment of this utility model, please refer to Figure 1 and Figure 2 The first slot 1100 includes a first part 1110 and a second part 1120. The first part 1110 is disposed on the bottom surface of the retaining square tube 1000, perpendicular to the length direction of the bottom surface. The length of the first part 1110 is the same as the width of the bottom surface of the retaining square tube 1000. When the shear reinforcement 5000 enters the first part 1110, its horizontal and vertical edges can abut against the inner wall of the side without the first slot 1100 to restrict the lateral movement of the shear reinforcement 5000. The second part 1120 is disposed on one side of the retaining square tube 1000, perpendicular to the length direction of the side. The length of the second part 1120 is less than the width of the side. The first part 1110 and the second part 1120 are interconnected at the junction of the bottom surface and the side surface, and the shear reinforcement 5000 can extend into the interior of the retaining square tube 1000 through the first part 1110 and the second part 1120.

[0027] As one embodiment of this utility model, please refer to Figure 1 , Figure 2 and Figure 3 The second slot 1200 includes a third part 1210 and a fourth part 1220, which are located on the same side of the first slot 1100. The third part 1210 is located on the bottom surface of the retaining square tube 1000 and is perpendicular to the first slot 1100. One end of the third part 1210 is connected to the end of the first part 1110 located in the second part 1120. One side of the third part 1210 is closely attached to the side without the first slot 1100 to restrict the lateral movement of the shear reinforcement 5000. The fourth part 1220 is located on the side of the retaining square tube 1000 and is perpendicular to the first slot 1100. After the shear reinforcement 5000 enters the retaining square tube 1000 through the first slot 1100, it can move towards the first slot 1100 through the second slot 1200.

[0028] As one embodiment of this utility model, please refer to Figure 1 and Figure 2One end of the third slot 1300 is connected to the end of the fourth part 1220, and the other end faces the bottom surface of the locking square tube 1000. The width of the third slot 1300 is the same as the diameter of the shear reinforcement 5000, and its length is not less than the diameter of the shear reinforcement 5000. When the shear reinforcement 5000 enters the third slot 1300, the pretension force brought by the third slot 1300, the crossbar 3000 and the hanger assembly 4000 restricts the longitudinal and vertical movement of the shear reinforcement 5000, and accurately positions the shear reinforcement 5000 in three dimensions: horizontal, longitudinal and vertical.

[0029] As one embodiment of this utility model, please refer to Figure 1 Multiple connecting components 2000 are spaced apart along the length of the locking square tube 1000. Each component includes a connecting plate 2100. One end of the connecting plate 2100 is fixedly connected to the locking square tube 1000. The connecting plate 2100 can be made of angle steel. The outer end of one leg of the angle steel is fixedly connected to the top surface of the locking square tube 1000. The bottom edge of the triangular plate 2200 is fixedly connected to the inner side of one leg of the angle steel. One side of the bottom edge of the triangular plate 2200 is fixedly connected to the inner side of the other leg of the angle steel to achieve a good fixing effect. The upper part of the triangular plate 2200 is provided with a fixing hole.

[0030] As one embodiment of this utility model, please refer to Figure 1 The crossbar 3000 is positioned above the connecting assembly 2000, with its ends connected to the templates on both sides of the precast beam. The crossbar 3000 is positioned in a through hole for connecting the hanger assembly 4000.

[0031] As one embodiment of this utility model, please refer to Figure 1 and Figure 4The boom assembly 4000 includes a boom 4100. One end of the boom 4100 is connected to the fixing hole of the triangular plate 2200 through a bolt assembly, and the other end passes through the through hole of the crossbar 3000 and is connected to the conical clamping assembly 4200. The conical clamping assembly 4200 includes a conical bolt 4210, a conical nut 4220, a waist-shaped washer 4230, and a lower nut 4240. The upper part of the conical bolt 4210 is a hollow frustum ring with smooth inner and outer surfaces and a small upper opening and a large lower opening. The inner diameter of the upper opening is slightly larger than that of the boom 4100. The frustum ring is cut with a notch that is larger at the top and smaller at the bottom. After closing, the inner diameter is smaller than that of the boom 4100. The middle part is a cylindrical ring with threads machined on the outer side, and the lower part is a hollow bolt with a waist-shaped cross section that is flattened on both sides. The tapered nut 4220 is manufactured to match the tapered bolt 4210. The upper part is a hollow frustum ring with smooth inner and outer surfaces, and a smaller upper opening and a larger lower opening. The inner diameter of the upper opening is slightly larger than the upper opening of the tapered bolt 4210. The lower part is a cylindrical ring with threads machined on its inner surface. When the tapered nut 4220 is screwed into the tapered bolt 4210, it compresses the notch of the tapered bolt 4210, reducing its size and gripping the inserted hanger 4100. The hollow bolt with a waist-shaped cross-section at the lower end of the tapered bolt 4210 is inserted into the through hole. After installing the waist-shaped washer 4230, it is secured with the lower nut 4240.

[0032] The slot design of the square tube allows for easy insertion and fixation of the shear reinforcement 5000 in its lateral position. The device is then moved so that the shear reinforcement 5000 reaches the bottom along the second slot 1200, with its horizontal edge locked in the third slot 1300. The lifting rod 4100 passes through the conical clamping assembly 4200. Finally, the device is lifted upwards and the conical nut 4220 is tightened. This completes the lateral, longitudinal, and vertical positioning in quick, sequential steps. For removal, simply loosen the conical nut 4220, allowing the lifting rod 4100 and triangular plate 2200 to fall, causing the square tube 1000 to detach from the shear reinforcement 5000. Then, it is moved laterally and lifted upwards to remove it from the device. When this device is installed or removed from one slot, other slots spaced according to the spacing of the shear reinforcement 5000 are simultaneously installed or removed, eliminating the need for individual installation and removal, resulting in very high efficiency.

[0033] The shear reinforcement 5000 is plane-limited and vertically pre-tensioned by the clamping square tube 1000, which effectively restrains the installed shear reinforcement 5000, resists the impact and vibration during the concrete pouring process, and prevents it from deviating or falling off. There is construction space between a pair of clamping square tubes 1000 and between the clamping square tube 1000 and the top surface of the concrete 7000 of the top slab, which has little impact on the concrete pouring, vibration, and finishing.

[0034] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A precast beam top slab shear reinforcement device, characterized in that, include: A positioning square tube is provided with a first transverse groove, the end of which extends toward the bottom surface and one side of the positioning tube. A second longitudinal groove is provided on one side of the first groove, and the end of the second groove is connected to the end of the first groove. A third transverse groove is provided on one side of the second groove, one end of which is connected to the second groove, and the other end extends toward the bottom surface. The first groove, the second groove, and the third groove form a fixing structure for fixing shear reinforcement. Multiple fixing structures are spaced apart along the length direction of the positioning square tube, and a pair of positioning square tubes are symmetrically spaced apart. A connecting component, which is disposed on the top of a pair of locking square tubes and is used to connect the pair of locking square tubes; A crossbar, which is positioned above the connecting assembly, is used to provide a fixed point; A boom assembly is disposed between a connecting component and a crossbar for connecting the connecting component and the crossbar.

2. The precast beam top slab shear reinforcement device according to claim 1, characterized in that, The width of the first slot and the second slot is not less than the diameter of the shear reinforcement.

3. The precast beam top slab shear reinforcement device according to claim 2, characterized in that, The first slot includes a first part and a second part. The first part is disposed on the bottom surface of the locking square tube, and its length is the same as the width of the bottom surface of the locking square tube. The second part is disposed on one side of the locking square tube, and its length is less than the width of the side.

4. The precast beam top slab shear reinforcement device according to claim 2, characterized in that, The second slot includes a third part and a fourth part, which are located on the same side of the first slot. The third part is located on the bottom surface of the locking square tube and is perpendicular to the first slot. The fourth part is located on the side of the locking square tube and is perpendicular to the first slot.

5. The precast beam top slab shear reinforcement device according to claim 1, characterized in that, One end of the third slot is connected to the end of the fourth part, and the other end faces the bottom surface of the locking square tube.

6. The precast beam top slab shear reinforcement device according to claim 5, characterized in that, The width of the third slot is the same as the diameter of the shear reinforcement, and its length is not less than the diameter of the shear reinforcement.

7. The precast beam top slab shear reinforcement device according to claim 1, characterized in that, Multiple connecting components are spaced apart along the length of the locking square tube, each including a connecting plate. One end of the connecting plate is fixedly connected to the locking square tube, and a triangular plate is fixedly connected to the other end of the connecting plate.

8. The precast beam top slab shear reinforcement device according to claim 1, characterized in that, The crossbar is positioned above the connecting assembly, and its ends are connected to the templates on both sides of the precast beam.

9. The precast beam top slab shear reinforcement device according to claim 1, characterized in that, The boom assembly includes a boom, one end of which is connected to a triangular plate, and the other end of which passes through a crossbar and is connected to a tapered clamping assembly.

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