A method for strengthening the formwork of a supportless steel-concrete beam

Abstract

This invention relates to the technical field of building construction, specifically to a method for reinforcing formwork of steel-concrete composite beams without support systems. The method includes the reinforcement of the steel beam, the welding of shear studs, the installation of reinforcing bolts, the binding and installation of reinforcing bars, the installation of the bottom formwork, the installation of the side formwork, the overall hoisting of the steel beam, reinforcing bars, and the formwork support system, the installation of gap formwork, and the concrete pouring process. By utilizing the greater rigidity, strength, and stability of the steel beam, and by using connectors to allow the steel beam to bear the self-weight of the steel-concrete composite beam / slab, the weight of the formwork support, and the construction live load, a large amount of high-support formwork erection is eliminated, thereby effectively improving construction efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of building construction, specifically to a method for reinforcing formwork of steel-concrete beams without support systems. Background Technology

[0002] With the rise of steel-concrete composite structures, more and more steel beams are being used in tall, open-air structures, especially sky bridges in multi-story buildings, which provide great convenience for communication between buildings. However, the construction of steel-concrete structures in these sky bridges presents numerous challenges.

[0003] In existing technical solutions, the construction of conventional steel-reinforced concrete beams typically involves first installing the steel beams, then erecting support frames, tying reinforcing bars, and pouring concrete. This method is suitable for construction on floors with low ceilings. However, for the construction of multi-story steel-concrete connecting corridors, which are located at considerable heights and have large steel-concrete components, using scaffolding or Bailey bridges would result in significant installation heights, requiring numerous construction measures, extensive high-altitude work, numerous safety concerns, high costs, and slow construction. Therefore, this invention proposes a support-free system for reinforcing steel-concrete beam formwork to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a method for reinforcing the formwork of a supportless steel-concrete beam to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for reinforcing formwork of a supportless steel-concrete beam, the method comprising:

[0006] Step 1: The reinforcement process of the steel beam. During the reinforcement process of the steel beam, stiffening plates are fixedly connected to the steel beam, and lifting lugs are symmetrically welded to both sides of the top surface of the steel beam.

[0007] Step 2: The welding process of the studs, wherein vertical studs are welded to the upper and lower sides of the steel beam, and horizontal studs are welded to the front and rear sides of the steel beam.

[0008] Step 3: Installation process of the reinforcing screw. During the installation process of the reinforcing screw, the bottom template reinforcing screw is fixedly installed on the bottom surface of the steel beam, and the side template reinforcing screw is fixedly installed on the side of the steel beam.

[0009] Step 4: Rebar assembly binding and installation process, wherein the rebar assembly is bound and positioned on vertical and horizontal studs.

[0010] Step 5: Bottom formwork installation process, wherein the bottom formwork is positioned and installed on the bottom formwork reinforcing bolts;

[0011] Step Six: Side Formwork Installation Process. During the side formwork installation process, the side formwork is positioned and installed on the side formwork reinforcing bolts.

[0012] Step 7: Overall hoisting process of steel beams, rebar assemblies and formwork support system. During the overall hoisting process of the steel beams, rebar assemblies and formwork support system, the whole structure is hoisted between the steel columns and suspended between the steel columns by slings. The edges of the rebar assemblies are connected to the reserved rebars on the steel columns by connectors.

[0013] Step 8: Installation of the gap template. During the installation of the gap template, the gap template is used to seal the gaps between the bottom template, side template and steel column.

[0014] Step Nine: Concrete Pouring Process. Concrete is poured using concrete pouring equipment.

[0015] Preferably, the steel beam is an I-shaped steel profile.

[0016] Preferably, multiple stiffening plates are provided at equal intervals, and the upper, lower, and inner sides of the stiffening plates are welded and positioned to the steel beam.

[0017] Preferably, during the installation of the reinforcing screw, a primary installation hole is first opened on the lower side plate of the steel beam, and the bottom template reinforcing screw is fixedly installed in the primary installation hole. Then, a secondary installation hole is opened on the vertical plate of the steel beam, and the side template reinforcing screw is fixed in the secondary installation hole.

[0018] Preferably, the bottom template is positioned and supported by a bottom template positioning beam, which is installed on the bottom template reinforcing screw by a primary positioning component.

[0019] Preferably, the side template is positioned and supported by a side template positioning beam, which is installed on the side template reinforcing screw by a secondary positioning component.

[0020] Preferably, the steel reinforcement group is composed of primary transverse reinforcement, vertical reinforcement, secondary transverse reinforcement, and longitudinal reinforcement. The primary transverse and vertical reinforcements are arranged in a grid pattern, the secondary transverse and longitudinal reinforcements are arranged in a grid pattern, the primary transverse and vertical reinforcements and vertical studs are tied together with wire for positioning, the secondary transverse and longitudinal reinforcements and horizontal studs are tied together with wire for positioning, and the vertical and longitudinal reinforcements are tied together with wire for positioning.

[0021] Preferably, during actual installation, the primary transverse reinforcement, vertical reinforcement, secondary transverse reinforcement, and longitudinal reinforcement all have gaps between themselves and the steel beams. The bottom template has a primary through hole, which is corresponding to the bottom template reinforcement bolt. The side template has a secondary mounting hole, which is corresponding to the side template reinforcement bolt.

[0022] Preferably, a screw reinforcement plate is welded and positioned between the stiffening plates, and the upper side of the screw reinforcement plate is flush with the lower side of the secondary mounting hole.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. A supportless steel-concrete beam formwork reinforcement method is established by combining the reinforcement process of steel beams, the welding process of studs, the installation process of reinforcing bolts, the binding and installation process of rebar assemblies, the installation process of bottom formwork, the installation process of side formwork, the overall hoisting process of steel beams, rebar assemblies and formwork support system, the installation process of gap formwork, and the concrete pouring process. By utilizing the greater rigidity, strength and stability of steel beams, and by setting up connectors to allow steel beams to bear the self-weight of steel-concrete beams and slabs, the weight of formwork supports and construction live loads, a large amount of high formwork construction is eliminated, thereby effectively improving the efficiency of building construction.

[0025] 2. Furthermore, in this invention, the stiffening plates, vertical studs, horizontal studs, bottom formwork reinforcing bolts, side formwork reinforcing bolts, and steel reinforcement assemblies are all installed on the ground before the steel beams are installed. Then, they are hoisted together with the steel beams to the designed position, which improves construction efficiency and quality, reduces construction difficulty, and allows a large amount of work to be carried out on the ground, greatly reducing high-altitude work and measures. At the same time, ground work improves the convenience of operation and enhances construction quality and efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram showing the positions of the steel beams and reinforcing bars of the present invention;

[0028] Figure 3 This is a schematic diagram showing the location of the reinforcing screw in this invention;

[0029] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0030] Figure 5 This is a schematic diagram of the steel beam structure of the present invention;

[0031] Figure 6 for Figure 5Enlarged schematic diagram of the structure at point B;

[0032] Figure 7 This is a schematic diagram of the steel reinforcement structure of the present invention;

[0033] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point C.

[0034] In the diagram: 1. Steel beam; 2. Bottom formwork; 3. Side formwork; 4. Steel column; 5. Lifting cable; 6. Vertical stud; 7. Horizontal stud; 8. Primary mounting hole; 9. Secondary mounting hole; 10. Lifting lug; 11. Primary transverse reinforcement; 12. Vertical reinforcement; 13. Secondary transverse reinforcement; 14. Longitudinal reinforcement; 15. Bottom formwork reinforcing bolt; 16. Bottom formwork positioning beam; 17. Primary positioning component; 18. Side formwork reinforcing bolt; 19. Side formwork positioning beam; 20. Secondary positioning component; 21. Stiffening plate; 22. Bolt lap plate; 23. Gap formwork. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0040] Please see Figure 1-8 The present invention provides the following three preferred embodiments.

[0041] Example 1

[0042] A method for reinforcing formwork of a supportless steel-concrete composite beam, comprising:

[0043] Step 1: Reinforcement process of steel beam. During the reinforcement process of steel beam, stiffening plates 21 are fixedly connected to steel beam 1, and lifting lugs 10 are symmetrically welded on both sides of the top surface of steel beam 1.

[0044] Step 2: Welding process of studs. During the welding process of studs, vertical studs 6 are welded to the upper and lower sides of the steel beam 1, and horizontal studs 7 are welded to the front and rear sides of the steel beam 1.

[0045] Step 3: Installation process of reinforcing bolts. During the installation process of reinforcing bolts, bottom template reinforcing bolts 15 are fixedly installed on the bottom surface of steel beam 1, and side template reinforcing bolts 18 are fixedly installed on the side of steel beam 1.

[0046] Step 4: Rebar assembly binding and installation process. During the rebar assembly binding and installation process, the rebar assemblies are bound and positioned on vertical studs 6 and horizontal studs 7.

[0047] Step 5: Bottom formwork installation process. During the bottom formwork installation process, the bottom formwork 2 is positioned and installed on the bottom formwork reinforcing screw 15.

[0048] Step Six: Side Formwork Installation Process. During the side formwork installation process, the side formwork 3 is positioned and installed on the side formwork reinforcing screw 18.

[0049] Step 7: Overall hoisting process of steel beams, rebar assemblies and formwork support system. During the overall hoisting process of steel beams, rebar assemblies and formwork support system, the whole structure is hoisted between steel columns 4 and suspended between steel columns 4 by slings 5. The edges of the rebar assemblies are connected to the reserved rebars on the steel columns 4 through connectors.

[0050] Step 8: Installation of gap templates. During the installation of gap templates, gap templates 23 are used to seal the gaps between the bottom template 2, side templates 3 and steel column 4.

[0051] Step Nine: Concrete Pouring Process. Concrete is poured using concrete pouring equipment.

[0052] The steel beam 1 is an I-shaped steel profile. A support-free steel-concrete beam formwork reinforcement method is constructed by combining the steel beam reinforcement process, the welding of studs, the installation of reinforcing bolts, the binding and installation of rebar assemblies, the installation of bottom formwork, the installation of side formwork, the overall hoisting of the steel beam, rebar assemblies, and formwork support system, the installation of gap formwork, and the concrete pouring process. This method utilizes the greater rigidity, strength, and stability of the steel beam 1, and by using connectors to allow the steel beam 1 to bear the self-weight of the steel-concrete beam and slab, the weight of the formwork support, and the construction live load, thus eliminating the need for extensive high-support formwork construction and effectively improving construction efficiency.

[0053] Multiple stiffening plates 21 are evenly spaced, and the upper, lower, and inner sides of the stiffening plates 21 are welded and positioned to the steel beam 1.

[0054] During the installation of the reinforcing bolts, a primary mounting hole 8 is first opened on the lower side plate of the steel beam 1, and the bottom template reinforcing bolt 15 is fixedly installed in the primary mounting hole 8. Then, a secondary mounting hole 9 is opened on the vertical plate of the steel beam 1, and the side template reinforcing bolt 18 is fixed in the secondary mounting hole 9.

[0055] The bottom formwork 2 is positioned and supported by the bottom formwork positioning beam 16, which is installed on the bottom formwork reinforcing screw 15 by the primary positioning component 17.

[0056] The side formwork 3 is positioned and supported by the side formwork positioning beam 19, which is installed on the side formwork reinforcing screw 18 by the secondary positioning component 20.

[0057] The steel reinforcement group is composed of primary horizontal reinforcement 11, vertical reinforcement 12, secondary horizontal reinforcement 13, and longitudinal reinforcement 14. The primary horizontal reinforcement 11 and vertical reinforcement 12 are arranged in a grid pattern, as are the secondary horizontal reinforcement 13 and longitudinal reinforcement 14. The primary horizontal reinforcement 11, vertical reinforcement 12, and vertical studs 6 are positioned by binding with wire, as are the secondary horizontal reinforcement 13, longitudinal reinforcement 14, and horizontal studs 7. The vertical reinforcement 12 and longitudinal reinforcement 14 are also positioned by binding with wire.

[0058] Example 2

[0059] Based on Example 1, during actual installation, the primary transverse reinforcement 11, vertical reinforcement 12, secondary transverse reinforcement 13, and longitudinal reinforcement 14 all have gaps between them and the steel beam 1. The bottom formwork 2 is provided with a primary through hole, which is set to correspond with the bottom formwork reinforcing bolt 15. The side formwork 3 is provided with a secondary installation hole, which is set to correspond with the side formwork reinforcing bolt 18, so as to facilitate the full flow of concrete into the gaps of the formwork.

[0060] Example 3

[0061] Based on Embodiment 2, a screw reinforcement plate 22 is welded and positioned between the stiffening plates 21, and the upper side of the screw reinforcement plate 22 is flush with the lower side of the secondary mounting hole 9, thereby improving the stress stability of the side template reinforcing screw 18.

[0062] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A method for reinforcing formwork of a supportless steel-concrete beam, characterized in that: The method for strengthening the formwork of the unsupported steel-concrete beam system includes: Step 1: The reinforcement process of the steel beam. During the reinforcement process of the steel beam, stiffening plates (21) are fixedly connected to the steel beam (1), and lifting lugs (10) are symmetrically welded on both sides of the top surface of the steel beam (1). Step 2: Welding process of studs. During the welding process of studs, vertical studs (6) are welded on the upper and lower sides of the steel beam (1), and horizontal studs (7) are welded on the front and rear sides of the steel beam (1). Step 3: Installation process of the reinforcing screw. During the installation process of the reinforcing screw, the bottom template reinforcing screw (15) is fixedly installed on the bottom surface of the steel beam (1), and the side template reinforcing screw (18) is fixedly installed on the side of the steel beam (1). Step 4: Rebar assembly binding and installation process, wherein the rebar assembly is bound and positioned on vertical studs (6) and horizontal studs (7); Step 5: Bottom template installation process. During the bottom template installation process, the bottom template (2) is positioned and installed on the bottom template reinforcing screw (15). Step 6: Side template installation process, wherein the side template (3) is positioned and installed on the side template reinforcing screw (18) during the side template installation process; Step 7: The overall hoisting process of the steel beam, rebar group and formwork support system. During the overall hoisting process of the steel beam, rebar group and formwork support system, the whole structure is hoisted between the steel columns (4) and suspended between the steel columns (4) by slings (5). The edges of the rebar group are connected to the reserved rebars on the steel columns (4) through connectors. Step 8: Installation of the gap template. During the installation of the gap template, the gap template (23) is used to seal the gaps between the bottom template (2), the side template (3), and the steel column (4). Step Nine: Concrete Pouring Process. Concrete is poured using concrete pouring equipment.

2. The method for reinforcing the formwork of a supportless steel-concrete beam according to claim 1, characterized in that: The steel beam (1) is a steel profile with an I-shaped cross section.

3. The method for reinforcing formwork of a supportless steel-concrete beam according to claim 2, characterized in that: The stiffening plates (21) are arranged in multiple pieces at equal intervals, and the upper, lower and inner sides of the stiffening plates (21) are welded and positioned to the steel beam (1).

4. The method for reinforcing formwork of a supportless steel-concrete beam according to claim 3, characterized in that: During the installation of the reinforcing screw, a primary installation hole (8) is first opened on the lower side plate of the steel beam (1), and the bottom template reinforcing screw (15) is fixedly installed in the primary installation hole (8). Then, a secondary installation hole (9) is opened on the vertical plate of the steel beam (1), and the side template reinforcing screw (18) is fixed in the secondary installation hole (9).

5. The method for reinforcing formwork of a supportless steel-concrete beam according to claim 4, characterized in that: The bottom template (2) is positioned and supported by the bottom template positioning beam (16), which is installed on the bottom template reinforcing screw (15) by the primary positioning component (17).

6. The method for reinforcing the formwork of a supportless steel-concrete beam according to claim 5, characterized in that: The side template (3) is positioned and supported by the side template positioning beam (19), which is installed on the side template reinforcing screw (18) by the secondary positioning component (20).

7. The method for reinforcing formwork of a supportless steel-concrete beam according to claim 6, characterized in that: The steel reinforcement group is composed of primary transverse reinforcement (11), vertical reinforcement (12), secondary transverse reinforcement (13), and longitudinal reinforcement (14). The primary transverse reinforcement (11) and vertical reinforcement (12) are arranged in a grid pattern, and the secondary transverse reinforcement (13) and longitudinal reinforcement (14) are also arranged in a grid pattern. The primary transverse reinforcement (11), vertical reinforcement (12), and vertical studs (6) are positioned by binding with wire. The secondary transverse reinforcement (13), longitudinal reinforcement (14), and horizontal studs (7) are positioned by binding with wire. The vertical reinforcement (12) and longitudinal reinforcement (14) are positioned by binding with wire.

8. The method for reinforcing the formwork of a supportless steel-concrete beam according to claim 7, characterized in that: During actual installation, the primary transverse reinforcement (11), vertical reinforcement (12), secondary transverse reinforcement (13), and longitudinal reinforcement (14) all have gaps between themselves and the steel beam (1). The bottom template (2) has a primary through hole, which is corresponding to the bottom template reinforcing screw (15). The side template (3) has a secondary mounting hole, which is corresponding to the side template reinforcing screw (18).

9. The method for reinforcing the formwork of a supportless steel-concrete beam according to claim 8, characterized in that: A screw reinforcement plate (22) is welded and positioned between the stiffening plates (21), and the upper side of the screw reinforcement plate (22) is flush with the lower side of the secondary mounting hole (9).

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