High-low-grade concrete intercepting device for beam column core area and construction method of high-low-grade concrete intercepting device

Abstract

The invention discloses a high-low grade concrete intercepting device for a beam column core area and a construction method of the high-low grade concrete intercepting device. Each telescopic plate assembly comprises two plate boxes and a sleeve, the sleeve is connected to the side portion of one plate box, one plate box is arranged between the two adjacent upper-layer main reinforcements, the upper portion of one plate box is arranged in the sliding hole in a sliding mode, the other plate box is arranged in the sleeve in a sliding mode, and the lower portion of the other plate box is arranged between the two adjacent lower-layer main reinforcements of the beam; the plate box is provided with two side walls facing the upper-layer main rib or the lower-layer main rib, a plurality of penetrating holes formed in the height direction of the plate box are formed in the side walls, plugging rods are movably arranged in the penetrating holes, and an elastic jacking piece is connected between the plugging rods in the two penetrating holes corresponding to the two side walls in position; and the linkage structure is mounted in the plate box. The problems that according to a traditional stubble blocking technology of beam column core area node concrete, blocking is not firm, one-time input is achieved, operation is difficult, and node forming impression is poor are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a high-low grade concrete intercepting device for a core area of ​​a beam or column and a construction method thereof. Background Art

[0002] With the continuous development of my country's construction industry, the requirements for the bearing capacity of building structural components are constantly increasing, and high-strength concrete is also being promoted and applied. At the same time, the design concept of "strong columns and weak beams, strong nodes and weak connections" has been continuously strengthened, resulting in a high design of column strength grades in current structural designs, and a large difference in the grades of concrete at the core nodes of beams and columns. This area has generally become a hidden danger in concrete quality and appearance. In view of the problems of weak interception, one-time investment, difficult operation, and poor node forming appearance of traditional interception technology.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0004] In order to overcome the defects of the prior art, a high and low grade concrete interception device for the core area of ​​beams and columns and a construction method thereof are provided to solve the problems of weak interception, one-time investment, difficult operation and poor node forming appearance in the traditional interception process of concrete in the core area of ​​beams and columns.

[0005] In order to achieve the above-mentioned purpose, a concrete interception device for high and low grades in the core area of ​​beams and columns is provided, comprising:

[0006] A supporting beam arranged along the width direction of the beam is placed on the upper main reinforcement of the beam, and the supporting beam is provided with a strip-shaped sliding hole;

[0007] The straps are configured to fit the two cams, each of which is connected to a pair of camshafts, each of which is connected to a pair of locks, each of which is connected to a pair of locks, each of which is connected to a pair of locks, each of which is connected to a pair of locks, each of which is connected to a pair of locks. The straps are configured to fit the two cams, each of which is connected to a pair of locks. The straps are configured to fit the two cams, each of which is connected to a pair of locks.

[0008] A linkage structure for driving a plurality of blocking rods to make one end of the blocking rod return to the through hole is installed in the board box.

[0009] Furthermore, the elastic supporting member is a spring.

[0010] Furthermore, the linkage structure includes:

[0011] A rotating shaft is rotatably installed in the board box, and the rotating shaft is arranged along the height direction of the board box;

[0012] A cable is connected between the other end of the blocking rod and the rotating shaft. After the rotating shaft is rotated, the cable is wound around the rotating shaft to make one end of the blocking rod return to the through hole.

[0013] Furthermore, one end of the rotating shaft extends to the outside of the top of the box.

[0014] Furthermore, a vertically arranged threaded hole is opened on the top box wall of the board box, a locking bolt is screwed into the threaded hole, and the head of the locking bolt is pressed against the supporting beam to lock the telescopic plate assembly.

[0015] The present invention provides a construction method for a high-low grade concrete interception device for a core area of ​​a beam and column, comprising the following steps:

[0016] Drive multiple blocking rods of the telescopic plate assembly through a linkage structure so that one end of the blocking rod is retracted into the through hole of the plate box of the telescopic plate assembly;

[0017] Placing the support beam on the upper main reinforcement of the beam so that the support beam is arranged along the width direction of the beam;

[0018] The linkage structure releases the multiple blocking rods, and the elastic supporting member of the telescopic plate assembly pushes the blocking rod to make one end of the blocking rod extend to the outside of the plate box, and one end of the multiple blocking rods blocks the gap between the plate boxes of two adjacent telescopic plate assemblies;

[0019] After the beam and column are cast, the linkage structure is used to drive the multiple blocking rods of the telescopic plate assembly again to make one end of the blocking rod return to the through hole, and the high and low grade concrete intercepting devices used for the core area of ​​the beam and column are taken out from the concrete of the beam and column for turnover use.

[0020] The beneficial effects of the present invention are that the high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention intercepts the high and low grade concrete in the core of beams and columns through the telescopic plate assembly and the blocking rods extending from the plate box. The high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention can be reused. The high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention is suitable for beams of various heights, especially for beams with larger cross-sections. The concrete of the beam-column node constructed by the high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention has a good appearance after forming, and the high and low grade dividing line is clear and beautiful. The high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention is convenient and simple in process, and is convenient for on-site operators to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 It is a schematic structural diagram of a high and low grade concrete interception device for the core area of ​​beams and columns according to an embodiment of the present invention.

[0023] Figure 2 for Figure 1 Cross-sectional view at AA in .

[0024] Figure 3 4 is a cross-sectional view of a telescopic plate assembly according to an embodiment of the present invention.

[0025] Figure 4 2 is a cross-sectional view of a box according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Reference Figures 1 to 4 As shown, the present invention provides a high-low grade concrete interception device for the core area of ​​beams and columns, comprising: a supporting beam 1 and a telescopic plate assembly 2.

[0029] In this embodiment, the reinforcement structure of the beam includes upper main reinforcement 41, lower main reinforcement 42, waist reinforcement 43, hooks 44 and stirrups.

[0030] The upper main reinforcement is arranged above the lower main reinforcement. The upper main reinforcement and the lower main reinforcement are arranged along the length direction of the beam respectively. The number of the upper main reinforcement and the number of the lower main reinforcement are multiple, and the position of the upper main reinforcement corresponds to the position of the lower main reinforcement. The stirrups are fixed outside the multiple upper main reinforcements, the multiple lower main reinforcements and the waist reinforcement. The hooks are tied to the waist reinforcements on opposite sides of the steel structure.

[0031] The supporting beam 1 arranged along the width direction of the beam is placed on the upper main reinforcement 41 of the beam. The supporting beam 1 is provided with a strip-shaped sliding hole. The sliding hole is arranged along the length direction of the supporting beam.

[0032] There are multiple telescopic plate assemblies 2. The telescopic plate assemblies are arranged between adjacent upper main ribs and between adjacent lower main ribs.

[0033] Specifically, the telescopic plate assembly 2 includes two plate boxes 21 and a sleeve 22 .

[0034] The sleeve 22 is connected to the side of a plate box 21. The plate box 21 is arranged between two adjacent upper main ribs 41. The upper part of the plate box 21 is slidably arranged in the sliding hole of the support beam.

[0035] Another plate box 21 is slidably arranged in the sleeve 22. The lower part of the other plate box 21 is arranged between two adjacent lower main ribs 42 of the beam. By adjusting the position of the other plate box in the sleeve, the height of the entire telescopic plate assembly can be adjusted to adapt to the thickness of the beam.

[0036] In this embodiment, the board box 21 has two side walls facing the upper main reinforcement 41 or the lower main reinforcement 42. The side walls of the board box 21 are provided with a plurality of perforations. The plurality of perforations are arranged along the height direction of the board box 21. The perforations are provided with blocking rods 23. The smaller the spacing between the perforations, the higher the density of the blocking rods, and the better the effect of intercepting and blocking the concrete.

[0037] An elastic supporting member 24 is connected between the blocking rods 23 in the two corresponding perforations of the two side walls of the board box 21. The elastic supporting member 24 is used to push the blocking rod 23 so that one end of the blocking rod 23 extends to the outside of the board box 21.

[0038] As a preferred embodiment, the elastic supporting member 24 is a spring. The spring is a coil spring. The two ends of the coil spring are respectively connected to the other ends of the two blocking rods at corresponding positions.

[0039] The linkage structure 3 is installed in the plate box 21. The linkage structure 3 is used to drive the plurality of blocking rods 23 to make one end of the blocking rod 23 retract into the through hole, so that the telescopic plate assembly can be flexibly inserted between the adjacent upper main reinforcements and the adjacent lower main reinforcements, or pulled out between the adjacent upper main reinforcements and the adjacent lower main reinforcements.

[0040] In this embodiment, see Figure 4As shown, the linkage structure 3 includes: a rotating shaft 31 and a cable 32 .

[0041] Specifically, the rotating shaft 31 is rotatably installed in the board box 21. The rotating shaft 31 is arranged along the height direction of the board box 21.

[0042] A cable 32 is connected between the other end of the blocking rod 23 and the rotating shaft 31. The cable is tightened under the action of the elastic supporting member. When the telescopic plate assembly needs to be flexibly inserted between the adjacent upper main reinforcements and the adjacent lower main reinforcements, or pulled out between the adjacent upper main reinforcements and the adjacent lower main reinforcements, the rotating shaft 31 is rotated so that the cable 32 is wound around the rotating shaft 31 to allow one end of the multiple blocking rods 23 to be simultaneously retracted into the through hole.

[0043] As a preferred embodiment, one end of the rotating shaft 31 extends to the outside of the top of the board box 21. One end of the rotating shaft is connected with a handle.

[0044] A vertically arranged threaded hole is opened on the top wall of a plate box 21 , and a locking bolt 25 is screwed into the threaded hole. The head of the locking bolt 25 presses against the supporting beam 1 to lock the telescopic plate assembly 2 .

[0045] After the telescopic plate assembly is inserted between adjacent upper main ribs and adjacent lower main ribs, the locking bolts 25 are rotated so that the heads thereof are pressed against the supporting beam 1 to lock the telescopic plate assembly 2 .

[0046] The present invention provides a construction method for a high-low grade concrete interception device for a core area of ​​a beam and column, comprising the following steps:

[0047] S1. Drive the multiple blocking rods 23 of the telescopic plate assembly 2 through the linkage structure 3 to make one end of the blocking rod 23 retract into the through hole of the plate box 21 of the telescopic plate assembly 2.

[0048] Specifically, the rotating shaft can be rotated so that the cable is wound around the rotating shaft so that the multiple blocking rods are simultaneously retracted into the perforations.

[0049] S2. Place the supporting beam 1 on the upper main reinforcement 41 of the beam so that the supporting beam 1 is arranged along the width direction of the beam.

[0050] S3, the linkage structure 3 releases the multiple blocking rods 23, and the elastic supporting member 24 of the telescopic plate assembly 2 pushes the blocking rod 23 so that one end of the blocking rod 23 extends to the outside of the board box 21, and one end of the multiple blocking rods 23 blocks the gap between the board boxes 21 of two adjacent telescopic plate assemblies 2.

[0051] See also Figure 1As shown, when the linkage structure releases the blocking rod, the blocking rod in the board box extends out, and one end of the blocking rods of two adjacent telescopic plate assemblies abuts against each other, increasing the blocking interception area of ​​the telescopic plate assembly. With the assistance of the blocking rod, the interception area of ​​the concrete is increased.

[0052] S4. After the beams and columns are cast, the multiple blocking rods 23 of the telescopic plate assembly 2 are driven again by the linkage structure 3 to make one end of the blocking rod 23 return to the through-hole, and the high and low grade concrete intercepting devices used for the core area of ​​the beams and columns are taken out from the concrete of the beams and columns for turnover use.

[0053] The high and low grade concrete interception device for the core area of ​​beams and columns of the present invention is designed with the actual situation of the construction site in mind, and has the advantages of being recyclable, easy to clean, easy to operate, and having a good molding appearance. At the same time, it can effectively speed up the construction progress, better solve the problem of high and low grade concrete stringing, and reduce later repairs.

[0054] The locking bolts of the high and low grade concrete interception device for the core area of ​​beams and columns of the present invention slide into place in the telescopic plate assembly, are inserted into the gap between steel bars, and are tightened to lock the telescopic plate assembly, so that the telescopic plate cannot move along the sliding hole.

[0055] The telescopic plate assembly plays a role in blocking the main impact and pressure of concrete. The telescopic plate assembly is divided into two sections, in which the plate box of the lower section is slid into the sleeve of the plate box of the upper section to meet the needs of beams of different heights (or thicknesses). The telescopic plate assembly adjusts its position in the sliding hole to meet the concrete interception of the main reinforcement gaps of beams of different specifications. The width of the telescopic plate assembly is 2cm strips to meet the needs of different main reinforcement spacing.

[0056] The stirrups, waist bars and hooks of the beam reinforcement structure are arranged according to the design requirements.

[0057] In this embodiment, a steel wire mesh is provided on one side of the plurality of telescopic plate assemblies, which assists the telescopic plate assemblies in intercepting concrete, mainly intercepting concrete at the gaps of the telescopic plate assemblies, but the main impact and pressure are borne by the telescopic plate assemblies.

[0058] Before installation, tie the wire mesh in advance, then determine the position and number of the telescopic plate assembly according to the spacing of the main reinforcement of the beam, adjust the length of the telescopic plate assembly to match the height of the beam, insert it into the beam, and then use the locking bolt to fix the baffle. Then set a hook behind the telescopic plate assembly and the wire mesh to prevent deviation. After the high-strength concrete of the column blocking part is poured, check the fixing status of the telescopic plate assembly and the wire mesh. If they are firm, start pouring the beam concrete. After the beam concrete is poured, pull out the telescopic plate assembly and rinse it. After pulling out the telescopic plate assembly, vibrate it twice in its position to achieve the concrete compaction effect in this part.

[0059] The high and low grade concrete interception device for the core area of ​​beams and columns of the present invention makes up for the shortcoming that the traditional steel wire mesh interception is easily damaged after being impacted.

[0060] The high and low grade concrete intercepting device used for the core area of ​​beams and columns of the present invention can be reused.

[0061] The high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention is suitable for beams of various heights, especially for beams with larger cross-sections.

[0062] The concrete of the beam-column node constructed by the high- and low-grade concrete intercepting device for the core area of ​​the beam-column of the present invention has a good appearance after being formed, and the boundary line of the high and low grades is clear and beautiful.

[0063] The high and low grade concrete intercepting device for the core area of ​​beams and columns of the present invention has a simple and convenient process and is convenient for on-site workers to operate.

[0064] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A concrete interception device for high and low grade concrete in the core area of ​​beams and columns, characterized in that: include: A supporting beam arranged along the width direction of the beam is placed on the upper main reinforcement of the beam, and the supporting beam is provided with a strip-shaped sliding hole; The straps are configured to fit the two cams, each of which is connected to a pair of camshafts, each of which is connected to a pair of locks, each of which is connected to a pair of locks, each of which is connected to a pair of locks, each of which is connected to a pair of locks, each of which is connected to a pair of locks. The straps are configured to fit the two cams, each of which is connected to a pair of locks. The straps are configured to fit the two cams, each of which is connected to a pair of locks. A linkage structure for driving a plurality of blocking rods to make one end of the blocking rod return to the through hole is installed in the board box.

2. The high and low grade concrete interception device for the core area of ​​beams and columns according to claim 1 is characterized in that: The elastic supporting member is a spring.

3. The high and low grade concrete interception device for the core area of ​​beams and columns according to claim 1 is characterized in that: The linkage structure includes: A rotating shaft is rotatably installed in the board box, and the rotating shaft is arranged along the height direction of the board box; A cable is connected between the other end of the blocking rod and the rotating shaft. After the rotating shaft is rotated, the cable is wound around the rotating shaft to make one end of the blocking rod return to the through hole.

4. The high and low grade concrete interception device for the core area of ​​beams and columns according to claim 3 is characterized in that: One end of the rotating shaft extends to the outside of the top of the board box.

5. The high and low grade concrete interception device for the core area of ​​beams and columns according to claim 1 is characterized in that: A vertically arranged threaded hole is opened on the top box wall of the board box, a locking bolt is screwed into the threaded hole, and the head of the locking bolt is pressed against the supporting beam to lock the telescopic plate assembly.

6. A construction method for a high-low grade concrete interception device for the core area of ​​a beam and column as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: Drive multiple blocking rods of the telescopic plate assembly through a linkage structure so that one end of the blocking rod is retracted into the through hole of the plate box of the telescopic plate assembly; Placing the support beam on the upper main reinforcement of the beam so that the support beam is arranged along the width direction of the beam; The linkage structure releases the multiple blocking rods, and the elastic supporting member of the telescopic plate assembly pushes the blocking rod to make one end of the blocking rod extend to the outside of the plate box, and one end of the multiple blocking rods blocks the gap between the plate boxes of two adjacent telescopic plate assemblies; After the beams and columns are cast, the linkage structure is used again to drive the multiple blocking rods of the telescopic plate assembly to retract one end of the blocking rod into the through hole, and the high and low grade concrete intercepting devices used for the core areas of the beams and columns are taken out from the concrete of the beams and columns for circulation.

Images