A quick-assembly support for reinforcing bars in ultra-thick reinforced concrete slabs

Abstract

This application relates to a quick-assembly support for ultra-thick reinforced concrete slabs, comprising several quick-assembly frame groups arranged side-by-side at intervals, with adjacent quick-assembly frame groups connected by diagonal bracing trusses. Each quick-assembly frame group includes a top horizontal beam, several columns, and several supporting crossbars. The columns are spaced apart, and the top horizontal beam is fixedly connected to the top of each column. Several supporting plates are spaced apart along the vertical direction on each column, and each supporting plate is provided with a positioning rib. The positioning rib forms a positioning groove with the column, and the positioning grooves at the same horizontal level form installation positions. The supporting crossbars are embedded in each installation position. This application has the advantages of higher load-bearing capacity, stronger stability, faster construction, lower cost, and longer service life.

Description

Technical Field

[0001] This application relates to the technical field of rebar supports, and in particular to a quick-assembly support for rebar in ultra-thick reinforced concrete slabs. Background Technology

[0002] With the development of high-rise and super high-rise buildings, the thickness of foundation slabs and roof slabs is constantly increasing. The steel reinforcement supports of ultra-thick foundation slabs need to withstand huge loads, and during the construction period, they also need to bear the impact loads of personnel, equipment and concrete pump pipes.

[0003] However, traditional support systems are prone to settlement and instability due to insufficient design basis and frequent construction defects. For example: ① Traditional reinforced steel column supports, where the steel columns act as vertical supports, have a large slenderness ratio and lack effective horizontal scissor bracing or diagonal bracing systems, resulting in poor overall stability. Under the impact of concrete pouring, they are prone to bending or overall instability. ② Steel pipe and coupler supports, which use steel pipes and couplers for erection, with steel pads welded to the bottom of the uprights. The coupler connections are prone to loosening, posing a high risk of instability. Hollow parts of the steel pipes can easily form water seepage channels, causing water leakage into the reinforced concrete slab. ③ Welded steel section supports, which are rigid frames of columns, beams, and diagonal braces welded from channel steel (I-beams). They require a large amount of on-site welding (all columns, beams, and diagonal braces are welded), resulting in long construction periods, high costs, and the possibility of incomplete welds or thermal deformation leading to load transfer failure.

[0004] Therefore, the aforementioned problems highlight the issues of existing technologies requiring a large amount of welding and having a long construction period, thus suggesting areas for improvement. Utility Model Content

[0005] In order to reduce the amount of on-site welding work and thus shorten the construction period, this application provides a quick-installation bracket for the reinforcing bars of ultra-thick reinforced concrete slabs.

[0006] The technical solution provided in this application for a quick-installation support for reinforcing bars in ultra-thick reinforced concrete slabs is as follows: A quick-assembly support for the reinforcing bars of an ultra-thick reinforced concrete slab includes several quick-assembly frame groups arranged side by side at intervals, with adjacent quick-assembly frame groups connected by diagonal bracing trusses. The quick-assembly frame assembly includes a top-level crossbeam, several columns, and several supporting crossbars. The columns are spaced apart, and the top-level crossbeam is fixedly connected to the top of each column. The column is provided with a number of support plates at intervals along the vertical direction. Each support plate is provided with a positioning rib. The positioning rib and the column form a positioning groove. The positioning grooves at the same horizontal height form an installation position. The support crossbar is embedded in each installation position.

[0007] Preferably, the diagonal bracing truss includes several diagonal bracing rods, which are made of steel bars or structural steel, and the two ends of the diagonal bracing rods are welded or bolted to the columns of the adjacent quick-assembly frame assembly.

[0008] Preferably, the diagonal braces of adjacent diagonal bracing trusses are arranged in a V-shape.

[0009] Preferably, all the quick-assembly frame assemblies are fixedly provided with a number of support longitudinal bars on the support crossbar at the same horizontal height. The number of support longitudinal bars are arranged in parallel at intervals, and the support longitudinal bars are arranged perpendicular to the support crossbar.

[0010] Preferably, the contact point between the support longitudinal bar and the support transverse bar is fixed by binding with wire.

[0011] Preferably, the support plate is L-shaped, the long side of the support plate is fixed to the column by bolts, and the positioning rib is welded to the upper surface of the short side of the support plate.

[0012] Preferably, the top-level beam and the column are made of channel steel or I-beams.

[0013] Preferably, the supporting crossbar and the supporting longitudinal bar are made of steel bars.

[0014] Preferably, a steel pad is welded and fixed to the bottom end of the column.

[0015] Preferably, each of the support pieces is provided with two spaced-apart positioning ribs.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. This application uses a complementary combination of "steel profile and steel bar" to retain the advantages of high strength and high stability of steel profile while making up for its shortcomings of high steel consumption and large amount of welding by using the lightweight and easy construction characteristics of steel bar. Compared with steel bar column support, steel pipe fastener support and all-steel welded support, it achieves comprehensive benefits of "higher load-bearing capacity, stronger stability, faster construction, lower cost and longer service life".

[0017] 2. In this application, the support crossbars and support longitudinal bars are fixed by binding with iron wire, realizing "zero welding" rapid installation, which reduces the amount of on-site welding by ≥70%, shortens the construction period by ≥40%, and achieves a first-time pass rate of ≥90%. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a quick-assembly support for reinforcing bars.

[0019] Figure 2 This is a schematic diagram of the installation of the supporting crossbar.

[0020] Figure 3This is a schematic diagram of the installation of the supporting horizontal and vertical bars.

[0021] Explanation of reference numerals in the attached drawings: 1. Quick-assembly frame assembly; 11. Top-level crossbeam; 12. Column; 13. Support crossbar; 14. Steel pad; 15. Support plate; 16. Positioning rib; 17. Positioning groove; 18. Support longitudinal bar; 2. Diagonal bracing truss; 21. Diagonal bracing rod. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0023] A quick-installation support for reinforcing bars in ultra-thick reinforced concrete slabs, as described in the reference. Figure 1 and Figure 2 As shown, the system includes several quick-assembly frame groups 1 arranged side by side at intervals, with adjacent quick-assembly frame groups 1 connected by diagonal bracing trusses 2. In one embodiment, the interval between adjacent quick-assembly frame groups 1 is 1500mm. This interval value will be adjusted through design calculations for different reinforced concrete slab thicknesses. This embodiment only uses 1500mm as an example for illustration, and the same applies to the 1500mm mentioned below.

[0024] The quick-assembly frame assembly 1 includes a top-level crossbeam 11, several columns 12, and several supporting crossbars 13. The top-level crossbeam 11 and columns 12 are made of channel steel or I-beams, and the supporting crossbars 13 are made of reinforcing steel bars, specifically the reinforcing steel bars designed according to the ultra-thick reinforced concrete slab design drawings. The columns 12 are spaced apart, with a spacing of 1500mm between adjacent columns 12. A steel pad 14 is welded and fixed to the bottom end of each column 12. The top-level crossbeam 11 is fixedly connected to the top of each column 12 by bolts. The spacing between adjacent quick-assembly frame assemblies 1 and adjacent columns 12 is the same, thus forming a rectangular array of reinforcing steel quick-assembly supports.

[0025] Reference Figure 2 and Figure 3 As shown, the column 12 is provided with a number of support plates 15 at intervals along the vertical direction. The number of support plates 15 is set according to the actual situation. Each support plate 15 is provided with a positioning rib 16. The positioning rib 16 and the column 12 form a positioning groove 17. The positioning grooves 17 at the same horizontal height form an installation position. The support crossbar 13 is embedded in each installation position. When the support crossbar 13 is embedded in each installation position, the support crossbar 13 and the positioning groove 17 form an interference fit, thereby improving the installation stability of the support crossbar 13 in the positioning groove 17.

[0026] It is worth noting that the support plate 15 is made of angle steel and is L-shaped. The long side of the support plate 15 is fixed to the column 12 by bolts, and the positioning rib 16 is welded and fixed to the upper surface of the short side of the support plate 15. Each support plate 15 is provided with two spaced positioning ribs 16.

[0027] All quick-assembly frame assemblies 1 have several supporting longitudinal bars 18 fixedly installed on the supporting horizontal bars 13 at the same horizontal height. The supporting longitudinal bars 18 are made of steel bars, specifically the steel bars designed according to the ultra-thick reinforced concrete slab design drawings. The supporting longitudinal bars 18 are arranged in parallel and at intervals. The supporting longitudinal bars 18 are arranged perpendicular to the supporting horizontal bars 13. It is worth noting that the supporting longitudinal bars 18 are set on one side of each column 12 of the quick-assembly frame assemblies 1. The supporting longitudinal bars 18 overlap the supporting horizontal bars 13, and a vertically intersecting contact point is formed between the supporting longitudinal bars 18 and the supporting horizontal bars 13. The contact point between the supporting longitudinal bars 18 and the supporting horizontal bars 13 is fixed by binding with iron wire.

[0028] The diagonal bracing truss 2 includes several diagonal bracing rods 21, the number of which is the same as the number of columns 12. The diagonal bracing rods 21 are made of steel bars or structural steel. The two ends of the diagonal bracing rods 21 are welded or bolted to the columns 12 of the adjacent quick-assembly frame group 1. It is worth noting that the diagonal bracing rods 21 of the adjacent diagonal bracing truss 2 are arranged in a V-shape. One end of the diagonal bracing rod 21 is fixed to the top of the column 12, and the other end of the diagonal bracing rod 21 is fixed to the bottom of the adjacent column 12. Similarly, one end of the adjacent diagonal bracing rod 21 is fixed to the bottom of the column 12, and the other end of the diagonal bracing rod 21 is fixed to the top of the adjacent column 12, thus forming a V-shaped arrangement of the diagonal bracing rods 21 of the adjacent diagonal bracing truss 2.

[0029] In the same diagonal bracing truss 2, two adjacent diagonal bracing rods 21 are arranged in a staggered manner. That is, one end of the first diagonal bracing rod 21 is fixed to the top of the column 12, and the other end of the first diagonal bracing rod 21 is fixed to the bottom of the adjacent column 12. One end of the adjacent second diagonal bracing rod 21 is fixed to the bottom of the column 12, and the other end of the second diagonal bracing rod 21 is fixed to the top of the adjacent column 12, thus forming the above-mentioned staggered arrangement of the two adjacent diagonal bracing rods 21.

[0030] That is, the first set of diagonal bracing rods 21 of the adjacent diagonal bracing truss 2 are arranged in a positive V-shape, and the second set of diagonal bracing rods 21 are arranged in an inverted V-shape, thereby effectively improving the support stability of the diagonal bracing truss 2 for the two adjacent quick-assembly frame groups 1.

[0031] This application proposes a quick-installation support for ultra-thick reinforced concrete slabs, which is designed to complement the weaknesses of traditional systems. Channel steel (I-beams) is used as the uprights 12 and the top beam 11 of the quick-installation support. Steel bars are used as the supporting horizontal bars 13 and supporting vertical bars 18 in the middle part. Steel pads 14 are set at the bottom of the uprights 12, and diagonal bracing bars 21 are set between the uprights 12.

[0032] This modular quick-assembly steel reinforcement support not only avoids the instability risk of traditional steel reinforcement columns 12, but also eliminates the connection hazards and water seepage risks of steel pipe fasteners. Furthermore, it overcomes the problem of force transmission failure that may be caused by incomplete welding or thermal deformation of the full-section steel welds, providing a safe, economical, and efficient new technical path for the construction of ultra-thick base plates.

[0033] This application utilizes a complementary combination of "steel profiles and reinforcing bars" to retain the advantages of high strength and stability of steel profiles while compensating for their high steel consumption and large amount of welding with the lightweight and easy-to-construct characteristics of reinforcing bars. Compared with 12-braced reinforcing bar columns, steel pipe fastener brackets, and all-steel welded brackets, it achieves comprehensive benefits of "higher load-bearing capacity, stronger stability, faster construction, lower cost, and longer service life." Moreover, these advantages are directly generated by the unique structural arrangement and material combination of this invention, which cannot be achieved by existing technologies.

[0034] This application has the following key points: 1. Complementary main load-bearing system. A composite load-bearing path of "steel sections as the main load-bearing element and reinforcing bars as the auxiliary stabilizer" is adopted. Column 12 and top-level beam 11 must be channel steel or I-beams, while the intermediate beam is reinforced steel. Both coexist in the same support structure with clear functional zoning. This arrangement allows the steel sections to bear the main vertical loads while controlling the slenderness ratio, while the reinforcing bars only bear secondary vertical loads, resulting in optimal material utilization.

[0035] 2. Lateral stability structure of the diagonal bracing truss 2. A "V"-shaped diagonal bracing truss 2 is formed between columns 12 using only diagonal bracing members 21. The two ends of the diagonal bracing members 21 are fixed to the flanges or webs of the adjacent steel columns 12, forming an overall lateral constraint. This structure improves the overall stability coefficient of the quick-assembly steel reinforcement support without increasing the amount of steel used.

[0036] 3. Integrated force transmission node between the bottom steel pad 14 and the bottom plate reinforcement of column 12. The bottom end of the steel column 12 and the steel pad 14 are connected by full penetration bevel weld or high-strength bolts. This node not only diffuses concentrated stress but also blocks the seepage channel of the hollow steel pipe, achieving integrated "stress-waterproofing".

[0037] 4. Factory prefabrication and on-site assembly construction method: 1. Steel columns 12, top-level beams 11, and steel pads 14 are cut, drilled, and coated with anti-corrosion coating in the factory. 2. On-site installation only involves high-strength bolt connections at the joints of columns 12 and supporting beams, and welding or bolting of diagonal braces 21. 3. Intermediate supporting crossbars 13 and supporting longitudinal bars 18 are lapped together, achieving "zero welding" rapid installation. This process reduces on-site welding by ≥70%, shortens the construction period by ≥40%, and achieves a first-pass yield rate of ≥90%.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-installation support for reinforcing bars in ultra-thick reinforced concrete slabs, characterized in that, It includes several quick-assembly frame groups (1) arranged side by side at intervals, and adjacent quick-assembly frame groups (1) are connected by diagonal bracing trusses (2); The quick-assembly frame assembly (1) includes a top-level crossbeam (11), several columns (12) and several supporting crossbars (13), with several columns (12) spaced apart, and the top-level crossbeam (11) fixedly connected to the top of each column (12); The column (12) is provided with a number of support plates (15) at intervals along the vertical direction. Each support plate (15) is provided with a positioning rib (16). The positioning rib (16) and the column (12) form a positioning groove (17). The positioning grooves (17) at the same horizontal height form an installation position. The support crossbar (13) is embedded in each installation position.

2. The quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 1, characterized in that, The diagonal bracing truss (2) includes several diagonal bracing rods (21), which are made of steel bars or structural steel. The two ends of the diagonal bracing rods (21) are welded or bolted to the columns (12) of the adjacent quick-assembly frame group (1).

3. The quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 2, characterized in that, The diagonal bracing rods (21) of the adjacent diagonal bracing truss (2) are arranged in a V-shape.

4. The quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 1, characterized in that, All the quick-assembly frame assemblies (1) have several supporting longitudinal bars (18) fixedly installed on the supporting crossbar (13) at the same horizontal height. The several supporting longitudinal bars (18) are arranged in parallel at intervals, and the supporting longitudinal bars (18) are arranged perpendicular to the supporting crossbar (13).

5. The quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 4, characterized in that, The contact point between the support longitudinal rod (18) and the support transverse rod (13) is fixed by binding with iron wire.

6. The quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 1, characterized in that, The support plate (15) is L-shaped. The long side of the support plate (15) is fixed to the column (12) by bolts, and the positioning rib (16) is welded and fixed to the upper surface of the short side of the support plate (15).

7. The quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 1, characterized in that, The top-level beam (11) and the column (12) are made of channel steel or I-beam.

8. A quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 4, characterized in that, The supporting crossbar (13) and the supporting longitudinal bar (18) are made of steel bars.

9. A quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 1, characterized in that, A steel pad (14) is welded and fixed to the bottom end of the column (12).

10. A quick-installation support for reinforcing bars in an ultra-thick reinforced concrete slab according to claim 1, characterized in that, Each of the support plates (15) is provided with two spaced positioning ribs (16).

Images