Steel rolling equipment foundation platform main beam bottom protection layer control device and construction method

Abstract

The invention relates to the technical field of metallurgical buildings, in particular to a steel rolling equipment foundation platform main beam bottom protection layer control device and a construction method.The beam bottom protection layer control device is placed above a platform plate at the top of a steel pipe support system and stretches across a main beam rib, and a beam bottom cushion block is placed between the bottom of the main beam rib and the platform plate; the device comprises a support base supported on the top face of a platform plate, a support vertical rod is vertically and fixedly connected to the support base, height adjusting telescopic pieces are installed on the top of the support vertical rod, a support transverse rod stretching across a main beam rib is installed between the two height adjusting telescopic pieces, and a hook used for hooking the main beam rib is vertically installed on the support transverse rod. The device is arranged across a main beam, the weight of a main beam rib is transferred to the platform plate through the support vertical rod and the support base, stress is dispersed, the load pressure of the beam bottom cushion block is reduced, the effect that the thickness of a protection layer is doubly controlled through the beam bottom cushion block and the control device is achieved, and the device can also serve as an auxiliary lifting frame when the main beam rib is bound.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical construction, and in particular to a control device and a construction method for a protective layer at the bottom of a main beam of a foundation platform of a steel rolling equipment. Background Art

[0002] In the metallurgical construction industry, especially for the top platform beams of the rolling wire box equipment foundation, the beam depth is generally large, ranging from 1m to 2m, or even more than 2m, and the beam width is more than 800mm. However, after the concrete is poured and the formwork is removed, problems such as exposed stirrups at the bottom of the beam, falling off of the protective layer, and even the main reinforcement at the bottom of the beam is clearly visible.

[0003] One of the reasons for this phenomenon is that the concrete protective layer pads at the bottom of the beam are not strong enough, and the large and heavy beam will crush the protective layer; another reason is that the protective layer pads at the bottom of the beam are displaced, resulting in insufficient number of pads. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a control device and a construction method for the bottom protective layer of the main beam of the foundation platform of a steel rolling equipment.

[0005] In the first aspect, the present invention provides a control device for the bottom protective layer of the main beam of a steel rolling equipment foundation platform, which adopts the following technical solution: The control device for the bottom protective layer of the main beam of the foundation platform of the steel rolling equipment is placed above the platform plate on the top of the steel pipe support system and is arranged across the main beam reinforcement. A beam bottom pad is placed between the bottom of the main beam reinforcement and the platform plate. The device includes a support base supported on the top surface of the platform plate, a support upright is vertically fixed to the support base, a height-adjusting telescopic part is installed on the top of the support upright, a support crossbar arranged across the main beam reinforcement is installed between the two height-adjusting telescopic parts, and a hook for hooking the main beam reinforcement is vertically installed on the support crossbar.

[0006] By adopting the above technical scheme, the device is set across the main beam, and the weight of the main beam reinforcement is transferred to the platform plate through the bracket uprights and the bracket base, so as to disperse the force and reduce the load pressure of the beam bottom pad, thereby achieving the effect of dual control of the thickness of the protective layer through the beam bottom pad and the control device; the construction personnel can adjust the beam bottom elevation in time and quickly according to the design requirements, determine the protective layer thickness and add the beam bottom pad to ensure the quality of the main beam; at the same time, it can also be extended to the height adjustment of the thick raft foundation or the lower part of the platform plate steel mesh and the addition of the protective layer pad; the device can also serve as an auxiliary lifting frame when tying the main beam reinforcement.

[0007] Optionally, the height-adjustable telescopic member includes a support, which is inserted into the top of the bracket upright, and an adjusting nut for adjusting the height of the support is threadedly installed on the support, and the bracket crossbar is erected on the top of the support.

[0008] By adopting the above technical solution, the height of the support can be changed by rotating the adjusting nut, the operation is simple, and the adjusting nut and the support are easy to obtain materials and manufacture.

[0009] Optionally, the hook includes a cross bar portion and a vertical bar portion, the cross bar portion is used to hook the main beam reinforcement and is vertically fixed to the bottom end of the vertical bar portion, the top of the vertical bar portion is sleeved with a pad mounted on the top of the bracket cross bar, the top of the vertical bar portion is provided with an external thread and a fixing nut is threadedly installed thereon for tightening the top surface of the pad.

[0010] By adopting the above technical solution, the hook is easy to obtain materials and make, easy to operate in practice, and can improve construction efficiency.

[0011] Optionally, the bracket crossbar is a steel pipe and two of them are provided, the vertical rod portion is passed through the two steel pipes, and the pad is a mountain-shaped card.

[0012] By adopting the above technical solution, the steel pipe is easy to obtain and use, has good supporting performance, and can reduce the cost of use.

[0013] In a second aspect, the present invention provides a method for controlling the construction of a protective layer at the bottom of a main beam of a foundation platform of a steel rolling equipment, comprising the following steps: S1. Support the platform beam formwork, tie the main beam reinforcement and place the beam bottom pad; S2, tie up the secondary beam reinforcement, platform reinforcement and place the beam bottom pad; S3, placing a beam bottom protection layer control device, specifically comprising: placing the beam bottom protection layer control device across the main beam reinforcement; S4. Adjust the beam bottom protection layer control device to lift the main beam reinforcement, specifically including: inserting the crossbar of the hook into the top reinforcement of the main beam reinforcement and rotating it 90 degrees to hook the main beam reinforcement, then tightening the fixing nut, rotating the adjustment nut to adjust the support height, and then driving the hook to move upward through the bracket crossbar; S5. Pour beam and slab concrete.

[0014] Optionally, the beam bottom protective layer control device in S3 is placed in the middle area of ​​the main beam.

[0015] Optionally, when the main beam has a larger span and more reinforcement, the main beam reinforcement can be raised by 3-5 mm as a whole.

[0016] Optionally, when the main beam concrete pouring height reaches half of the main beam height, the beam bottom protective layer control device is gradually removed.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects: The device is set across the main beam, and transfers the weight of the main beam reinforcement to the platform plate through the bracket uprights and bracket base, dispersing the force and reducing the load pressure of the beam bottom pad, achieving the effect of dual control of the thickness of the protective layer through the beam bottom pad and the control device; Construction personnel can adjust the beam bottom elevation promptly and quickly according to design requirements, determine the thickness of the protective layer and add beam bottom pads to ensure the quality of the main beam; The device can also be used as an auxiliary lifting frame when tying the main beam reinforcement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the installation position of the protective layer control device for the bottom of the main beam of the foundation platform of the steel rolling equipment according to an embodiment of the present invention.

[0019] Figure 2 It is a structural schematic diagram of a protective layer control device for the bottom of a main beam of a steel rolling equipment foundation platform according to an embodiment of the present invention.

[0020] Figure 3 It is a top view of the cooperation between the supporting cross bar and the hook according to an embodiment of the present invention.

[0021] Figure 4 It is a flow chart of a method for controlling the construction of a protective layer at the bottom of a main beam of a foundation platform of a steel rolling equipment according to an embodiment of the present invention.

[0022] Explanation of the reference numerals in the accompanying drawings: 1. Steel pipe support system; 2. Main beam reinforcement; 3. Platform reinforcement; 4. Beam bottom pad; 5. Support base; 6. Support upright; 7. Support; 8. Adjustment nut; 9. Support cross bar; 10. Hook; 11. Pad; 12. Fixing nut. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1 -Attached Figure 4 The present invention is described in further detail.

[0024] The embodiment of the present invention discloses a device for controlling the bottom protective layer of the main beam of a steel rolling equipment foundation platform. Figure 1 A platform plate, a main beam reinforcement 2 and a platform reinforcement 3 are arranged on the top of the steel pipe support system 1, and a beam bottom pad 4 is arranged between the bottom of the main beam reinforcement 2 and the platform plate, and the beam bottom pad 4 is used to control the thickness of the protective layer.

[0025] Reference Figure 1 and Figure 2 The control device for the bottom protective layer of the main beam of the steel rolling equipment foundation platform is placed on the platform plate, which includes a bracket base 5 supported on the platform plate. Two bracket bases 5 are provided and are located on both sides of the main beam reinforcement 2. The bracket base 5 is made of a 10mm thick steel plate with a length and width of 100-150mm; a bracket upright 6 is vertically welded on the top of the bracket base 5. The bracket upright 6 adopts a Φ48 steel pipe, and its height exceeds the top height of the main beam by 1000-1500mm, which is easy to operate.

[0026] Reference Figure 2 and Figure 3A support 7 is inserted at the top of the support upright 6, and an adjusting nut 8 for adjusting the height of the support 7 is installed on the support 7. The support 7 and the adjusting nut 8 form a height adjustment telescopic member; two support crossbars 9 are horizontally arranged between the tops of the two support uprights 7. The support crossbar 9 is made of steel pipe and is arranged across the top of the main beam reinforcement 2. An inverted T-shaped hook 10 is installed between the two support crossbars 9. The hook 10 includes a vertical rod part and a horizontal rod part. The vertical rod part is vertically inserted between the two support crossbars 9, and the horizontal rod part is arranged below the upper steel bars of the main beam reinforcement 2.

[0027] Reference Figure 2 and Figure 3 The top of the vertical pole is detachably provided with a pad 11, which is mounted on the top of the two bracket cross bars 9. The pad 11 in this embodiment adopts a mountain-shaped clamp; the top of the vertical pole is provided with an external thread and a fixing nut 12 is threadedly installed, and the fixing nut 12 is pressed against the top of the pad 11 to fix the hook 10. The bracket base 5 of the device is preferably placed directly above the vertical pole of the steel pipe bracket system 1 and adjacent to the side wall of the main beam. At the same time, according to the span and size of the main beam, 1-5 groups of the device are set in the middle span section of the main beam to meet the use requirements; for beams exceeding 8m and with arch requirements, the number of the device can be appropriately increased.

[0028] Reference Figure 4 The method for controlling the construction of the bottom protective layer of the main beam of the foundation platform of the steel rolling equipment according to the embodiment of the present invention comprises the following steps: S1, supporting the platform beam and slab formwork, tying the main beam reinforcement 2 and placing the beam bottom pad 4, specifically includes: erecting the steel pipe support system 1 according to the construction drawings, supporting the platform beam and slab formwork, and then using wire binding to fix the main beam reinforcement 2, and placing the beam bottom pad 4 directly below the stirrups of the main beam reinforcement 2.

[0029] S2, tying the secondary beam reinforcement, the platform reinforcement 3 and placing the beam bottom pad 4, specifically includes: tying and fixing the secondary beam reinforcement and the platform reinforcement 3 according to the construction drawings, and simultaneously placing the beam bottom pad 4.

[0030] S3. Place the beam bottom protective layer control device, specifically including: place the beam bottom protective layer control device across the main beam reinforcement 2, the device is preferably placed in the middle area of ​​the main beam, and the number of devices placed is determined according to the main beam parameters.

[0031] S4. Adjust the bottom protective layer control device to lift the main beam reinforcement 2, specifically including: inserting the crossbar of the hook 10 into the top reinforcement of the main beam reinforcement 2 and rotating it 90° to hook the main beam reinforcement 2, and then tightening the fixing nut 12; rotating the adjusting nut 8 to adjust the height of the support 7, and then driving the hook 10 to move upward through the bracket crossbar 9, thereby changing the bottom elevation of the main beam reinforcement 2 to determine the thickness of the protective layer and disperse the weight of the main beam; if the main beam has a large span and more reinforcement, the main beam reinforcement 2 can be lifted by 3-5mm as a whole.

[0032] S5. Pouring beam and slab concrete, specifically including: first pouring the main beam part. When the pouring height of the main beam concrete reaches half of the main beam height, this device can be gradually removed. At this time, the concrete in the bottom protective layer area of ​​the main beam has been filled densely; then pouring the secondary beam and platform slab in turn to complete the pouring of the platform beam and slab concrete.

[0033] The above-mentioned beam bottom protective layer control device can be made of local materials and is easy to operate. For example, steel plates, steel pipes, supports, nuts and pads commonly used in engineering can be used, and the assembly is simple and easy. The device is arranged across the main beam, and the weight of the main beam reinforcement 2 is transferred to the platform plate through the bracket uprights 6 and the bracket base 5, so as to disperse the force and reduce the load pressure of the beam bottom pad 4, thereby achieving the effect of dual control of the thickness of the protective layer through the beam bottom pad 4 and the control device.

[0034] Construction personnel can adjust the bottom elevation of the beam promptly and quickly according to design requirements, determine the thickness of the protective layer and add beam bottom pads 4 to ensure the quality of the main beam; at the same time, it can also be extended to the height adjustment of the steel mesh at the bottom of the thick raft foundation or platform plate and the addition of protective layer pads; the device can also serve as an auxiliary lifting frame when tying the main beam reinforcement 2.

[0035] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A control device for the bottom protective layer of the main beam of a steel rolling equipment foundation platform, characterized in that: A platform plate is placed on the top of the steel pipe support system (1) and is arranged across the main beam reinforcement (2). A beam bottom pad (4) is placed between the bottom of the main beam reinforcement (2) and the platform plate. The device comprises a support base (5) supported on the top surface of the platform plate. A support upright (6) is vertically fixed to the support base (5). A height-adjusting telescopic member is installed on the top of the support upright (6). A support cross bar (9) arranged across the main beam reinforcement (2) is installed between the two height-adjusting telescopic members. A hook (10) for hooking the main beam reinforcement (2) is vertically installed on the support cross bar (9).

2. The device for controlling the bottom protective layer of the main beam of the steel rolling equipment foundation platform according to claim 1 is characterized by: The height-adjusting telescopic member comprises a support (7), the support (7) is inserted into the top of the support upright (6), an adjusting nut (8) for adjusting the height of the support (7) is threadedly mounted on the support (7), and a support crossbar (9) is arranged on the top of the support (7).

3. The device for controlling the bottom protective layer of the main beam of the steel rolling equipment foundation platform according to claim 1 or 2, characterized in that: The hook (10) comprises a crossbar portion and a vertical bar portion, wherein the crossbar portion is used to hook the main beam reinforcement (2) and is vertically fixed to the bottom end of the vertical bar portion, and the top of the vertical bar portion is sleeved with a pad (11) mounted on the top of the bracket crossbar (9), and the top of the vertical bar portion is provided with an external thread and a fixing nut (12) is threadedly installed for pressing against the top surface of the pad (11).

4. The device for controlling the bottom protective layer of the main beam of the steel rolling equipment foundation platform according to claim 3 is characterized by: The support crossbar (9) is a steel pipe and is provided with two of them, the vertical rod portion is inserted between the two steel pipes, and the pad (11) is a mountain-shaped clamp.

5. A construction method for a control device for the bottom protective layer of a main beam of a steel rolling equipment foundation platform according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, supporting the platform beam formwork, tying the main beam reinforcement (2) and placing the beam bottom pad (4); S2, tying secondary beam reinforcement and platform reinforcement (3) and placing beam bottom pads (4); S3, placing a beam bottom protective layer control device, specifically comprising: placing the beam bottom protective layer control device across the main beam reinforcement (2); S4, adjusting the beam bottom protective layer control device to lift the main beam reinforcement (2), specifically comprising: inserting the crossbar portion of the hook (10) into the top reinforcement of the main beam reinforcement (2) and rotating it 90 degrees to hook the main beam reinforcement (2), then tightening the fixing nut (12), rotating the adjustment nut (8) to adjust the height of the support (7), and then driving the hook (10) to move upward through the bracket crossbar (9); S5. Pour beam and slab concrete.

6. The method for controlling the construction of the bottom protective layer of the main beam of the steel rolling equipment foundation platform according to claim 5 is characterized by: The beam bottom protection layer control device in S3 is placed in the middle area of ​​the main beam.

7. The method for controlling the construction of the bottom protective layer of the main beam of the steel rolling equipment foundation platform according to claim 5 is characterized by: When the main beam has a large span and more reinforcement, the main beam reinforcement (2) can be raised by 3-5 mm as a whole.

8. The method for controlling the construction of the bottom protective layer of the main beam of the foundation platform of a steel rolling equipment according to claim 5, characterized in that: When the main beam concrete pouring height reaches half of the main beam height, gradually remove the beam bottom protective layer control device.

Images