A reinforcement installation system and construction method for an ultra-high cross-section conversion structure

Abstract

The present invention discloses a steel bar installation system for an ultra-high cross-section conversion structure, comprising three rows of frames located on both sides of the conversion structure, the frames comprising two rows of fixed frames and a detachable frame close to the conversion structure, the steel bar system of the conversion structure comprising base steel bars and frame column steel bars, a row of frames close to the conversion structure of the fixed frames and the top of the detachable frames are fixed with a number of top supporting steel beams, a number of hooks located above the conversion structure are installed on the top supporting steel beams, the bottom ends of the hooks are connected to the horizontal shoulder bars of the frame columns, the steel bars are not tied by conventional horse stool supports, but by supporting the top supporting steel beams on the frames, and then the steel bars are supported and fixed by hanging parts, thereby ensuring the positioning accuracy of the steel bars and reducing the difficulty of operation, and having good anti-overturning ability, and the flexible removal of the inner detachable frames enables the installation of steel bars for the frame columns and the base.

Description

Technical Field

[0001] The present invention belongs to the field of conversion structures, and in particular relates to a steel bar installation system and a construction method for an ultra-high cross-section conversion structure. Background Art

[0002] A transfer structure refers to the load transferred from the superstructure through load-bearing components such as walls and columns. The resulting pressure on the cross-section at its base is typically far greater than the foundation's bearing capacity. Therefore, a foundation with a downwardly expanding horizontal cross-section is required beneath the walls and columns to distribute the wall or column load across the foundation's underside, ensuring it meets the foundation's bearing capacity and deformation requirements. This structure typically features a reinforced concrete structure with narrower frame columns at the top and a wider base at the bottom.

[0003] At present, the transfer structure is usually reinforced and tied in the base, and the horizontal steel bars are supported by horse stool bars to ensure the height of the steel bars, and then the frame columns are cast as a whole. However, with the development of the construction industry, the site is getting larger and larger, and the span and size of the transfer structure are also increasing. It is common to encounter ultra-high, large-span and large-section transfer structures. For example, the span of the transfer structure reaches 55m and the cross-sectional size reaches 2mX5m. Although such projects are rare, they will become more and more with the development trend. It is difficult to meet the anti-overturning requirements by relying solely on the reinforcement in the base, and the conventional horse stool bar method is used to support the horizontal steel bars. Not only does it waste a lot of materials, but the construction operation also requires a long construction period. Therefore, the effect is not ideal. The construction of ultra-high, large-span and large-section transfer structures requires innovative design. Summary of the Invention

[0004] The present invention provides a reinforcement installation system and construction method for an ultra-high cross-section conversion structure, which are used to solve the technical problems mentioned in the background art.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a steel bar installation system for an ultra-high cross-section conversion structure, comprising three rows of frames located on both sides of the conversion structure, the frames comprising two rows of fixed frames and a detachable frame close to the conversion structure, the steel bar system of the conversion structure comprising base steel bars and frame column steel bars, when the frame column steel bars are tied, the detachable frame is installed on the inner side of the fixed frame close to the conversion structure, a row of frames close to the conversion structure of the fixed frame and the top of the detachable frame are fixed with a number of top supporting steel beams, the top of the frame is higher than the conversion structure, the two ends of the top supporting steel beam are respectively fixed to the tops of the two rows of frames close to the conversion structure of the three rows of frames on both sides, and the top supporting steel beam is installed on the top supporting steel beam. There are several hooks located above the conversion structure, the bottom ends of the hooks are connected to the horizontal shoulder bars of the frame columns, the horizontal shoulder bars of the frame columns are connected to the horizontal top longitudinal bars of the frame columns, and several horizontal bottom longitudinal bars of the frame columns are arranged below the horizontal top longitudinal bars of the frame columns. The horizontal top longitudinal bars of the frame columns and the horizontal bottom longitudinal bars of the frame columns are connected by several vertical stirrups of the frame columns. When the base reinforcement plates are tied, the detachable frame is not installed on the inside of the fixed frame body, and several top supporting steel beams are fixed to the top of a row of frames of the fixed frame close to the conversion structure. The base longitudinal bars are arranged in the base area of ​​the conversion structure, and the base longitudinal bars and the frame column longitudinal bars are connected by base stirrups.

[0006] As a preferred embodiment of this embodiment, a jacking structure is provided on the top of the vertical steel pipes of a row of frames close to the conversion structure of the fixed frame and the detachable frame. The jacking structure includes a jacking vertical pipe located on the vertical steel pipe, and a jacking nut is threadedly connected to the outer side of the jacking vertical pipe. The jacking nut is supported on the vertical steel pipe, and a U-shaped support plate is fixed on the top of the jacking vertical pipe, and the U-shaped support plate is clamped on the outer side of the top supporting steel beam.

[0007] As a preferred embodiment of this embodiment, a steel beam storage and limiting structure is installed on the top supporting steel beam, and the steel beam storage and limiting structure includes an upper holding rod 1 located at the top of the top supporting steel beam and a lower holding rod 1 located at the bottom of the top supporting steel beam. Both ends of the upper holding rod 1 and the lower holding rod 1 extend beyond the top supporting steel beam and the extending parts are connected by a screw 1. A limiting vertical rod is fixed at the top of the upper holding rod 1.

[0008] As a preferred embodiment of this embodiment, the top supporting steel beam is an I-beam.

[0009] As a preferred embodiment of the present invention, the hook member is a C-shaped steel rod, the top of the hook member is hung on the top supporting steel beam, and the horizontal shoulder pole steel bar of the frame column is hung on the bottom of the hook member.

[0010] As a preferred embodiment of this invention, the hook is an 8-shaped steel rod, the top of the hook is sleeved on the top supporting steel beam, and the bottom of the hook is sleeved on the horizontal shoulder steel bar of the frame column.

[0011] As a preferred embodiment of this embodiment, the hook member is made of round steel.

[0012] As a preferred embodiment of this invention, the spacing between the top supporting steel beams is 2.4m, and the spacing between the hooks is 500mm.

[0013] As a preferred embodiment of this embodiment, the hook member includes an upper swivel hook bottom and a lower replaceable hook head, the lower replaceable hook head is J-shaped, and the upper swivel hook bottom includes an upper holding rod 2 located at the top of the top supporting steel beam and a lower holding rod 2 located at the bottom of the top supporting steel beam, both ends of the upper holding rod 2 and the lower holding rod 2 extend beyond the top supporting steel beam and the extending parts are connected by a screw rod 2, a threaded rod is fixed to the bottom end of the lower holding rod 2, a threaded hole is provided at the top of the lower replaceable hook head, and the lower replaceable hook head is threadedly connected to the threaded rod.

[0014] A construction method for a steel bar installation system of an ultra-high cross-section conversion structure comprises the following steps:

[0015] Step 1: Install the frames on both sides of the conversion structure. The frames include two rows of fixed frames and a detachable frame close to the conversion structure, which serves as the upper I-beam support and also as a scaffolding.

[0016] Step 2: Set up the top support steel beams, arrange them at intervals of 2.4m, and use the top support structure for leveling;

[0017] Step 3: Install the hooks on the top supporting steel beam, with the hooks arranged in the center and the distance between the hooks 500mm;

[0018] Step 4: Install the horizontal shoulder steel bars, longitudinal steel bars and stirrups of the frame columns and tie them together, then close the formwork of the frame columns;

[0019] Step 5: Remove the detachable frame, install the longitudinal reinforcement and base stirrups of the base and tie them up, then close the formwork of the base;

[0020] Step 6: Pour the concrete of the conversion structure in layers.

[0021] The beneficial effects of the present invention are as follows: in the construction of ultra-high, large-span, and large-cross-section conversion structures, the present invention 1) not only installs and ties steel bars in the base area, but also installs and ties steel bars in the frame column area, overcoming the problem of poor anti-overturning ability of ultra-high, large-span, and large-cross-section conversion structures; 2) the tying of steel bars does not adopt conventional horse stool support, but a top supporting steel beam is supported on the frame, and then the steel bars are supported and fixed by hanging parts, which ensures the positioning accuracy of the steel bars and reduces the difficulty of operation, and has good anti-overturning ability. The top also has steel bars for placing, which can be bundled and lifted in a centralized manner, and then the construction workers install them individually, which greatly saves the construction period and construction intensity; 3) the frame is flexibly used, which can not only realize construction protection, but also can be operated and flexibly dismantled. The detachable frame on the inside can realize the installation of steel bars for the frame columns and the base, without the need to repeatedly arrange the operating platform separately. Therefore, a steel bar installation system and construction method for the conversion structure with convenient operation, strong integrity, high anti-overturning ability and good economic benefits is realized.

[0022] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention; the main purpose and other advantages of the present invention can be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic diagram of the overall structure of the second embodiment of the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point B in the middle

[0027] : 1. Fixed frame; 2. Removable frame; 3. Top supporting steel beam; 4. Hook; 41. Upper rotating hook bottom; 42. Lower replacement hook head; 43. Upper holding rod two; 44. Lower holding rod two; 45. Screw two; 46. Threaded rod; 5. Horizontal shoulder bar reinforcement of frame column; 6. Horizontal top longitudinal reinforcement of frame column; 7. Horizontal bottom longitudinal reinforcement of frame column; 8. Stirrups of frame column; 9. Longitudinal reinforcement of base; 10. Stirrups of base; 11. Top supporting structure; 12. Top supporting vertical pipe; 13. Top supporting nut; 14. U-shaped support plate; 15. Steel beam storage limit structure; 151. Upper holding rod one; 152. Lower holding rod one; 153. Bolt one; 154. Limiting vertical pole. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention are described in detail below through examples. The following examples are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and cannot be interpreted as limiting the technical solutions of the present invention. Example

[0029] Combine Figure 1 and Figure 2 A steel bar installation system for an ultra-high cross-section conversion structure includes three rows of frames located on both sides of the conversion structure, the frames include two rows of fixed frames 1 and a detachable frame 2 close to the conversion structure, the steel bar system of the conversion structure includes base steel bars and frame column steel bars, when the frame column steel bars are tied, the detachable frame 2 is installed on the inner side of the fixed frame 1 close to the conversion structure, a plurality of top supporting steel beams 3 are fixed to the top of a row of frames of the fixed frame 1 close to the conversion structure and the top of the detachable frame 2, the top of the frame is higher than the conversion structure, the two ends of the top supporting steel beam 3 are respectively fixed to the top of the two rows of frames of the three rows of frames close to the conversion structure on both sides, and a plurality of hooks located above the conversion structure are installed on the top supporting steel beam 3. Part 4, the bottom end of the hook part 4 is connected to the horizontal shoulder bar steel bar 5 of the frame column, the horizontal shoulder bar steel bar 5 of the frame column is connected to the horizontal top longitudinal steel bar 6 of the frame column, and a number of horizontal bottom longitudinal steel bars 7 of the frame column are arranged below the horizontal top longitudinal steel bar 6 of the frame column. The horizontal top longitudinal steel bar 6 of the frame column and the horizontal bottom longitudinal steel bar 7 of the frame column are connected by a number of vertical frame column stirrups 8. When the base steel bar plate is tied, the detachable frame 2 is not installed on the inner side of the fixed frame 1. A number of top supporting steel beams 3 are fixed to the top of a row of frames of the fixed frame 1 close to the conversion structure. The base area of ​​the conversion structure is arranged with base longitudinal steel bars 9, and the base longitudinal steel bars 9 and the frame column longitudinal steel bars are connected by base stirrups 10.

[0030] As a preferred method of this embodiment, a supporting structure 11 is provided at the top of the vertical steel pipe of a row of frames of the fixed frame 1 close to the conversion structure and the detachable frame 2. The supporting structure 11 includes a supporting vertical pipe 12 located on the vertical steel pipe. The outer side of the supporting vertical pipe 12 is threadedly connected with a supporting nut 13. The supporting nut 13 is supported on the vertical steel pipe. A U-shaped support plate 14 is fixed to the top of the supporting vertical pipe 12. The U-shaped support plate 14 is stuck on the outside of the top supporting steel beam 3.

[0031] As a preferred embodiment of this embodiment, a steel beam storage and limiting structure 15 is installed on the top supporting steel beam 3. The steel beam storage and limiting structure 15 includes an upper holding rod 151 located at the top of the top supporting steel beam 3 and a lower holding rod 152 located at the bottom of the top supporting steel beam 3. Both ends of the upper holding rod 151 and the lower holding rod 152 extend beyond the top supporting steel beam 3 and the extending parts are connected by a screw 153. A limiting vertical rod 154 is fixed at the top of the upper holding rod 151.

[0032] As a preferred embodiment of this embodiment, the top supporting steel beam 3 is an I-beam.

[0033] As a preferred embodiment of the present invention, the hook member 4 can be a C-shaped steel rod, the top of the hook member 4 is hung on the top supporting steel beam 3, and the horizontal shoulder steel bar 5 of the frame column is hung on the bottom of the hook member 4.

[0034] As a preferred embodiment of the present invention, the hook member 4 may also be an 8-shaped steel rod, with the top of the hook member 4 being sleeved on the top supporting steel beam 3 and the bottom of the hook member 4 being sleeved on the horizontal shoulder steel bar 5 of the frame column.

[0035] As a preferred embodiment of this embodiment, the hook member 4 is made of round steel.

[0036] As a preferred embodiment of the present invention, the spacing between the top supporting steel beams 3 is 2.4 m, and the spacing between the hook members 4 is 500 mm. Example

[0037] like Figure 3 and Figure 4 The difference from the first embodiment is that the hook member 4 includes an upper swivel hook base 41 and a lower replaceable hook head 42. The lower replaceable hook head 42 is J-shaped. The upper swivel hook base 41 includes an upper holding rod 2 43 located at the top of the top supporting steel beam 3 and a lower holding rod 2 44 located at the bottom of the top supporting steel beam 3. Both ends of the upper holding rod 2 43 and the lower holding rod 2 44 extend beyond the top supporting steel beam 3, and the extended portions are connected by a screw rod 2 45. A threaded rod 46 is fixed to the bottom end of the lower holding rod 2 44. The top of the lower replaceable hook head 42 has a threaded hole, and the lower replaceable hook head 42 is threadedly connected to the threaded rod 46. During pouring, a portion of the top of the lower replaceable hook head 42 extends out of the pouring surface. After pouring is completed, the lower replaceable hook head 42 is cut, and the cut section of the lower replaceable hook head 42 is screwed down. The upper swivel hook base 41 can be fixed and used cyclically. This not only allows the hook member to meet the length requirements each time, but also saves a large amount of steel bar material. Example

[0038] A construction method for a steel bar installation system of an ultra-high cross-section conversion structure comprises the following steps:

[0039] Step 1: Install the frames on both sides of the conversion structure. The frames include two rows of fixed frames 1 and a detachable frame 2 close to the conversion structure, which serves as the upper I-beam support and also as a scaffolding.

[0040] Step 2: Set up the top support steel beams 3, arrange them at a spacing of 2.4m, and use the top support structure 11 for leveling;

[0041] Step 3: Install the hook 4 on the top supporting steel beam 3. The hook 4 is arranged in the center and the distance between the hooks 4 is 500mm.

[0042] Step 4: Install the frame column horizontal shoulder steel bars 5, the frame column longitudinal steel bars and the frame column stirrups 8 and tie them together, then close the frame column formwork;

[0043] Step 5: dismantle the detachable frame 2, install the base longitudinal reinforcement 9 and base stirrups 10 and tie them, and then close the base formwork;

[0044] Step 6: Pour the concrete of the conversion structure in layers.

[0045] The beneficial effects of the present invention are as follows: in the construction of ultra-high, large-span, and large-cross-section conversion structures, the present invention 1) not only installs and ties steel bars in the base area, but also installs and ties steel bars in the frame column area, overcoming the problem of poor anti-overturning ability of ultra-high, large-span, and large-cross-section conversion structures; 2) the tying of steel bars does not adopt conventional horse stool support, but a top supporting steel beam 3 is supported on the frame, and then the steel bars are supported and fixed by hanging parts, which ensures the positioning accuracy of the steel bars and reduces the difficulty of operation, and has good anti-overturning ability. The top also has steel bars for placement, which can be bundled and lifted in a centralized manner, and then the construction workers install them individually, greatly saving the construction period and construction intensity; 3) the frame is flexibly used, which can not only realize construction protection, but also can be operated and flexibly dismantled. The detachable frame 2 on the inside realizes the installation of steel bars for the frame columns and the base, without the need to repeatedly arrange the operating platform separately. Therefore, a steel bar installation system and construction method for the conversion structure with convenient operation, strong integrity, high anti-overturning ability and good economic benefits is realized.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that a person skilled in the art can conceive within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention.

Claims

1. A reinforcement installation system for an ultra-high cross-section conversion structure, characterized by: The invention comprises three rows of frames located on both sides of a conversion structure, the frames comprising two rows of fixed frames (1) and detachable frames (2) close to the conversion structure, the steel bar system of the conversion structure comprising base steel bars and frame column steel bars, when the frame column steel bars are tied, the detachable frames (2) are installed on the inner side of the fixed frames (1) close to the conversion structure, a plurality of top supporting steel beams (3) are fixed to the tops of a row of frames of the fixed frames (1) close to the conversion structure and the detachable frames (2), the tops of the frames are higher than the conversion structure, the two ends of the top supporting steel beams (3) are respectively fixed to the tops of the two rows of frames of the three rows of frames close to the conversion structure on both sides, a plurality of hooks (4) located above the conversion structure are installed on the top supporting steel beams (3), the bottom ends of the hooks (4) are connected to the frame The horizontal shoulder bar steel bar (5) of the column is connected to the horizontal top longitudinal steel bar (6) of the frame column. A plurality of horizontal bottom longitudinal steel bars (7) of the frame column are arranged below the horizontal top longitudinal steel bars (6) of the frame column. The horizontal top longitudinal steel bars (6) of the frame column and the horizontal bottom longitudinal steel bars (7) of the frame column are connected by a plurality of vertical frame column stirrups (8). When the base reinforcement plate is tied, the detachable frame (2) is not installed on the inner side of the fixed frame (1). A plurality of top supporting steel beams (3) are fixed to the top of a row of frames of the fixed frame (1) close to the conversion structure. The base area of ​​the conversion structure is provided with base longitudinal steel bars (9). The base longitudinal steel bars (9) and the frame column longitudinal steel bars are connected by base stirrups (10).

2. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 1, characterized in that: A supporting structure (11) is provided at the top of the vertical steel pipes of a row of frames close to the conversion structure of the fixed frame (1) and the detachable frame (2). The supporting structure (11) includes a supporting vertical pipe (12) located on the vertical steel pipe. The outer side of the supporting vertical pipe (12) is threadedly connected with a supporting nut (13). The supporting nut (13) is supported on the vertical steel pipe. A U-shaped supporting plate (14) is fixed to the top of the supporting vertical pipe (12). The U-shaped supporting plate (14) is stuck on the outer side of the top supporting steel beam (3).

3. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 2, characterized in that: A steel beam storage limiting structure (15) is installed on the top supporting steel beam (3), and the steel beam storage limiting structure (15) includes an upper holding rod (151) located at the top of the top supporting steel beam (3) and a lower holding rod (152) located at the bottom of the top supporting steel beam (3). Both ends of the upper holding rod (151) and the lower holding rod (152) extend beyond the top supporting steel beam (3), and the extended portions are connected by two screw rods (153). A limiting vertical rod (154) is fixed at the top end of the upper holding rod (151).

4. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 3, characterized in that: The top supporting steel beam (3) is an I-beam.

5. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 4, characterized in that: The hook member (4) is a C-shaped steel rod, the top of the hook member (4) is hung on the top supporting steel beam (3), and the horizontal shoulder steel bar (5) of the frame column is hung on the bottom of the hook member (4).

6. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 4, characterized in that: The hook part (4) is an 8-shaped steel rod, the top of the hook part (4) is sleeved on the top supporting steel beam (3), and the bottom of the hook part (4) is sleeved on the horizontal shoulder steel bar (5) of the frame column.

7. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 4, characterized in that: The material of the hook member (4) is round steel.

8. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 4, characterized in that: The spacing between the top supporting steel beams (3) is 2.4m, and the spacing between the hook members (4) is 500mm.

9. The steel bar installation system for an ultra-high cross-section conversion structure according to claim 4, characterized in that: The hook member (4) comprises an upper rotating hook bottom (41) and a lower replacement hook head (42), the lower replacement hook head (42) is J-shaped, the upper rotating hook bottom (41) comprises an upper holding rod (43) located at the top of the top supporting steel beam (3) and a lower holding rod (44) located at the bottom of the top supporting steel beam (3), both ends of the upper holding rod (43) and the lower holding rod (44) extend beyond the top supporting steel beam (3), and the extended portions are connected by a screw rod (45), a threaded rod (46) is fixed to the bottom end of the lower holding rod (44), a threaded hole is provided at the top of the lower replacement hook head (42), and the lower replacement hook head (42) is threadedly connected to the threaded rod (46).

10. A construction method for a steel bar installation system for an ultra-high cross-section conversion structure according to any one of claims 1 to 7, characterized in that: The following steps are included: Step 1: Install frames on both sides of the conversion structure. The frames include two rows of fixed frames (1) and a detachable frame (2) close to the conversion structure, which serves as an upper I-beam support and also as a scaffolding. Step 2: Set up the top support steel beams (3) at a spacing of 2.4m and use the top support structure (11) for leveling; Step 3: Install the hook member (4) on the top supporting steel beam (3), with the hook member (4) arranged in the center and the hook member (4) spaced 500 mm apart; Step 4: Install the horizontal shoulder steel bars (5), longitudinal steel bars and stirrups (8) of the frame columns and tie them together, and then close the formwork of the frame columns; Step 5: dismantle the detachable frame (2), install the base longitudinal steel bars (9) and base stirrups (10) and tie them together, and then close the base formwork; Step 6: Pour the concrete of the conversion structure in layers.

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