A thick and large floor slab steel bar support and its construction method

Abstract

The present invention discloses a thick and large floor steel bar support and its construction method. The steel bar support is composed of a plurality of unit bodies spliced vertically and horizontally. The unit body is in an inverted triangular shape and includes a first connecting piece and a second connecting piece. A vertical rod is connected between the first connecting piece and the second connecting piece. Cross bars extend and are connected on both sides of the first connecting piece. The second connecting piece is respectively connected to the ends of two cross bars through two inclined struts. Among them, the end of the cross bar of the horizontally arranged unit body is connected to the first connecting piece of the vertically arranged unit body, and the end of the cross bar of the arranged unit body is connected to the first connecting piece of the horizontally arranged unit body. The present invention can solve problems such as large labor consumption, high material consumption, and great construction operation difficulty during the construction of traditional steel bar supports.

Description

Technical Field

[0001] The present invention relates to the technical field of construction of large and thick floor concrete structures, and specifically to a steel bar support for a large and thick floor and its construction method. Background Art

[0002] When constructing a large and thick floor concrete structure, a three-dimensional steel bar support needs to be set up. Most of the commonly used steel bar supports at present are made by welding steel pipes or steel profiles on site one by one. When welding these steel pipes or steel profiles into a steel bar support on site, multiple people need to cooperate to complete it together, with a large amount of labor, high material consumption, inconvenient construction operation, and great difficulty in on-site cross-operation. Summary of the Invention

[0003] The present invention provides a steel bar support for a large and thick floor and its construction method, which can solve the problems of large labor consumption, high material consumption, and great construction operation difficulty during the construction of traditional steel bar supports.

[0004] To achieve the above object, in the first aspect, the present invention provides the following technical solution: A steel bar support for a large and thick floor, the steel bar support is composed of a plurality of unit bodies spliced horizontally and vertically. The unit body is in an inverted triangular shape, including a first connecting piece and a second connecting piece. A vertical rod is connected between the first connecting piece and the second connecting piece. Two cross bars extend and are connected on both sides of the first connecting piece. The second connecting piece is connected to the ends of the two cross bars respectively through two diagonal braces. Among them, the end of the cross bar of the horizontally arranged unit body is connected to the first connecting piece of the vertically arranged unit body, and the end of the cross bar of the arranged unit body is connected to the first connecting piece of the horizontally arranged unit body. Splicing is carried out using unit bodies, which has good versatility and simple construction operation. The unit body is in an inverted triangular shape, with high strength, safety and reliability. When encountering the site boundary or height difference, the diagonal brace can be adjusted to make flexible adjustments.

[0005] Preferably, the first connecting piece includes two T-shaped splicing pieces that are butted against each other, and a longitudinal connecting arm perpendicular to the T-shaped splicing pieces in the middle of the T-shaped splicing pieces. Connection slots are formed at both ends after the two T-shaped splicing pieces are butted and inside the longitudinal connecting arm. The ends of the cross bar and the diagonal brace are inserted into the corresponding connection slots to be connected to the first connecting piece. The vertical rod is connected by inserting into the insertion pipe formed after being butted with the T-shaped splicing piece. Flanging parts can be provided at the edges of the T-shaped splicing piece to form connection slots, which is simple to manufacture. As the main connecting piece, the first connecting piece can quickly connect adjacent unit bodies.

[0006] Preferably, the vertical rod, the cross bar and the diagonal brace are all made of square pipes, with sufficient strength and convenient installation.

[0007] Preferably, the second connecting member includes two parallel flat plates, and the ends of the vertical rod and the diagonal brace extend between the two flat plates of the second connecting member and are connected to the second connecting member. The structure is simple, and the connection between the vertical rod and the diagonal brace can be realized through the two flat plates.

[0008] Preferably, the cross bar and the diagonal brace are connected to the first connecting member, and the diagonal brace and the second connecting member are both connected by rivets. Rivet connection is relatively convenient.

[0009] Second, a construction method of the thick and large floor steel bar support described in the first aspect includes the following steps:

[0010] S1: Prepare a special construction plan before construction and draw processing drawings.

[0011] S2: According to the processing drawings of the steel bar support unit module, pre-install the unit body outside the site. When pre-installing, first install the first connecting member and the diagonal brace and vertical rod connected to the first connecting member, and then set the second connecting member and the cross bar connected to the second connecting member. The prefabricated unit body should be placed flat on a clean and flat ground.

[0012] S3: Position and set out the lines on the construction site, and pop out the position lines of the unit body.

[0013] S4: Bind the bottom steel bar mesh of the thick and large floor at the construction site and conduct acceptance.

[0014] S5: Install the unit body and conduct acceptance. When installing, the adjacent unit bodies are placed in sequence, and the upper and lower rows are staggered. When the edge unit body of the frame cannot be placed, the unit body can be disassembled or the length of the cross bar can be changed.

[0015] S6: Pull the horizontal elevation reference line according to the elevation of the steel bar support and bind the upper layer of steel bars.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The unit bodies are used for splicing, which has good versatility and simple construction operations. The construction period can be saved, materials can be saved, and cross construction can be avoided by pre-installing the unit bodies outside the site and finally installing them inside the site. The unit body is in an inverted triangle shape, with high strength, safety and reliability. When encountering the site boundary or height difference, the diagonal brace can be adjusted for flexible adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the unit body of the present invention;

[0019] Figure 2 is a schematic overall structural diagram of the steel bar support of the present invention;

[0020] Figure 3Schematic diagram of the vertical pole, horizontal pole and diagonal brace of the present invention;

[0021] Figure 4 Schematic diagram of the T-shaped splicing piece of the present invention before flanging;

[0022] Figure 5 Schematic diagram of the T-shaped splicing piece of the present invention after flanging;

[0023] Figure 6 Schematic diagram of the first connecting piece of the present invention after forming;

[0024] Figure 7 Schematic diagram of the second connecting piece of the present invention;

[0025] Figure 8 Structural diagram of the rivet of the present invention.

[0026] Reference numerals:

[0027] 1. Second connecting piece, 2. First connecting piece, 21. T-shaped splicing piece, 22. Longitudinal connecting arm, 23. Connecting slot, 24. 3. Vertical pole, 4. Horizontal pole, 5. Diagonal brace, 6. Rivet. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] As Figure 1-8 shown, in order to solve the problems of large labor consumption, high material consumption, and great construction operation difficulty during the construction of traditional steel bar supports, the present invention provides an embodiment: a thick large floor steel bar support, the steel bar support is composed of a plurality of unit bodies spliced horizontally and vertically, the unit bodies are in an inverted triangle shape, including a first connecting piece 2 and a second connecting piece 1, a vertical pole 3 is connected between the first connecting piece 2 and the second connecting piece 1, horizontal poles 4 are extended and connected on both sides of the first connecting piece 2, the second connecting piece 1 is respectively connected to the ends of two horizontal poles 4 through two diagonal braces 5, wherein the end of the horizontal pole 4 of the horizontally arranged unit body is connected to the first connecting piece 2 of the longitudinally arranged unit body, and the end of the horizontal pole 4 of the arranged unit body is connected to the first connecting piece 2 of the horizontally arranged unit body. Splicing with unit bodies has good versatility and simple construction operation. The unit body is in an inverted triangle shape, with high strength, safety and reliability, and the diagonal brace can be adjusted to make flexible adjustments when encountering the site boundary or height difference.

[0030] Specifically, the overall thickness of the steel bar support is determined by the vertical pole 3 and the diagonal brace 5. The number of multiple unit bodies is not limited and can be adjusted according to needs. Looking at the steel bar support from the front, it presents a grid-like structure. The unit bodies can be assembled before construction and directly installed on site.

[0031] As an embodiment of the first connecting member 2, as Figure 4-6 shown, the first connecting member 2 includes two butt-jointed T-shaped splicing members 21 and a longitudinal connecting arm 22 perpendicular to the T-shaped splicing members 21 and arranged in the middle of the T-shaped splicing members 21. Connection slots 23 are formed at both ends after the two T-shaped splicing members 21 are butted and on the inner side of the longitudinal connecting arm 22. The ends of the cross bar 4 and the diagonal brace 5 are inserted into the corresponding connection slots 23 to be connected to the first connecting member 2. The upright post 3 is connected by plugging into the insertion pipe formed after being butted with the T-shaped splicing member 21. As Figure 4 shown, the T-shaped splicing members 21 can be formed by punching iron sheets. Multiple flanging parts can be arranged on the edges of the T-shaped splicing members 21 to form the connection slots 23. After the edge flanging parts are folded, the T-shaped splicing members 21 as shown in Figure 5 can be formed. The production is simple. As the main connecting member, the first connecting member 2 can quickly connect adjacent unit bodies. As Figure 6 shown, after two T-shaped splicing members 21 are assembled, there are connection slots 23 in four directions. These 4 connection slots 23 are on the same plane. In addition, an insertion pipe is formed, which is perpendicular to the plane where the 4 connection slots 23 are located. A large number of connection holes 24 can be arranged on the side walls of the connection slots 23 and the insertion pipe.

[0032] In this embodiment, as Figure 3 shown, the upright post 3, the cross bar 4 and the diagonal brace 5 are all made of square pipes, with sufficient strength and convenient installation. The ends of the upright post 3, the cross bar 4 and the diagonal brace 5 can be provided with different numbers of connection holes 24 according to needs.

[0033] As a specific embodiment of the second connecting member 1, as Figure 7 shown, the second connecting member 1 includes two parallel plates. The ends of the upright post 3 and the diagonal brace 5 extend between the two plates of the second connecting member 1 to be connected to the second connecting member 1. The structure is simple. The connection between the upright post 3 and the diagonal brace 5 can be realized through the two plates. Four connection holes 24 are correspondingly arranged on the two plates, which is convenient for connecting with the upright post 3 and the diagonal brace 5.

[0034] As a preferred solution, as Figure 8 shown, the cross bar 4 and the diagonal brace 5 are connected to the first connecting member 2, and the diagonal brace 5 is connected to the second connecting member 1 by rivets 6. Rivet connection is relatively convenient.

[0035] In this embodiment, the specific construction method of the thick large floor steel bar support includes the following steps:

[0036] S1: Prepare a special construction plan before construction and draw processing drawings, the content of which must include construction technology, safety guarantee measures, acceptance requirements and calculation sheets. When designing, the vertical rod spacing of the unit body, the height of the steel bar support and the position of the second connector 1 should be determined. The calculation sheet should include the slenderness ratio and stability check of the vertical rod 3 and the diagonal bracing rod 5, and the bending resistance and deflection check of the cross bar 4. If the bearing capacity cannot be met, the rod material, vertical rod spacing, joint method and the position of the lower joint can be considered for replacement. The positions of each steel bar support unit body should be determined in combination with the construction structure drawings, and then safety disclosure and technical disclosure should be carried out according to the regulations;

[0037] S2: According to the processing drawings of the steel bar support unit modules, pre-install the unit bodies off-site. When pre-installing, first install the first connector 2, the diagonal bracing rod 5 and the vertical rod 3 connected to the first connector 2, and then set the second connector 1 and the cross bar 4 connected to the second connector 1. The prefabricated unit bodies should be placed flat on a clean and flat ground, and rain protection measures should be taken;

[0038] S3: Conduct positioning and setting out at the construction site and pop out the position lines of the unit bodies;

[0039] S4: Bind the bottom layer steel bar mesh of the thick and large foundation slab at the construction site and conduct acceptance;

[0040] S5: Install the unit bodies and conduct acceptance. When installing, place the adjacent unit bodies in sequence, stagger the upper and lower rows. When the edge unit bodies of the frame cannot be placed, the unit bodies can be disassembled or the length of the cross bar can be changed, but the vertical rod spacing should meet the design requirements, and cushion blocks should be placed at the bottom of the vertical rods;

[0041] S6: Pull the horizontal elevation reference line according to the elevation of the steel bar support, and bind the upper layer of steel bars. Among them, when the height exceeds 1.2 meters, ladders should be set up, and it is prohibited to concentrate the load above the bound upper layer of steel bars.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indicators will also change accordingly.

[0043] In addition, in the present invention, the descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

Claims

1. A thick and large floor slab steel bar support, characterized in that, The described steel bar support is composed of multiple unit bodies spliced horizontally and vertically. The unit body is in an inverted triangular shape and includes a first connecting piece (2) and a second connecting piece (1). A vertical rod (3) is connected between the first connecting piece (2) and the second connecting piece (1). Two cross rods (4) extend and are connected on both sides of the first connecting piece (2). The second connecting piece (1) is respectively connected to the ends of the two cross rods (4) through two diagonal braces (5). The end of the cross rod (4) of the horizontally arranged unit body is connected to the first connecting piece (2) of the vertically arranged unit body, and the end of the cross rod (4) of the vertically arranged unit body is connected to the first connecting piece (2) of the horizontally arranged unit body; The first connecting piece (2) includes two T-shaped splicing pieces (21) that are butted against each other, and a longitudinal connecting arm (22) that is perpendicular to the T-shaped splicing piece (21) and is arranged in the middle of the T-shaped splicing piece (21). Connection slots (23) are formed at both ends after the two T-shaped splicing pieces (21) are butted and on the inner side of the longitudinal connecting arm (22). The ends of the cross rod (4) and the diagonal brace (5) are inserted into the corresponding connection slots (23) to be connected to the first connecting piece (2), and the vertical rod (3) is connected by inserting into the insertion pipe formed after being butted with the T-shaped splicing piece (21); The second connecting piece (1) includes two parallel flat plates. The ends of the vertical rod (3) and the diagonal brace (5) extend into the space between the two flat plates of the second connecting piece (1) to be connected to the second connecting piece (1); Rivets (6) are used to connect between the cross rod (4) and the diagonal brace (5) and the first connecting piece (2), and between the diagonal brace (5) and the second connecting piece (1).

2. The thick and large floor slab steel bar support according to claim 1, characterized in that: The vertical rod (3), the cross rod (4), and the diagonal brace (5) are all made of square pipes.

3. A construction method of the thick and large floor slab steel bar support according to any one of claims 1-2, characterized in that, It includes the following steps: S1: Prepare a special construction plan before construction and draw processing drawings; S2: According to the processing drawings of the steel bar support unit module, pre-install the unit bodies off-site. During pre-installation, first install the first connecting piece (2) and the diagonal brace (5) and the vertical rod (3) connected to the first connecting piece (2), and then set the second connecting piece (1) and the cross rod (4) connected to the second connecting piece (1). The prefabricated unit bodies should be placed flat on a clean and flat ground; S3: Position and set out the lines on the construction site, and pop out the position lines of the unit bodies; S4: Bind the bottom layer steel bar mesh of the thick and large foundation slab at the construction site and conduct acceptance; S5: Install the unit bodies and conduct acceptance. During installation, adjacent unit bodies are placed in sequence, and the upper and lower rows are placed staggeredly. When the edge unit bodies of the frame cannot be placed, the unit bodies can be disassembled or the length of the cross rod can be changed; S6: Pull a horizontal elevation reference line according to the elevation of the steel bar support and bind the upper layer of steel bars.

Images