Beam reinforcing system of arch support

Abstract

The utility model relates to the technical field of beam reinforcing, in particular to an arch-supported beam reinforcing system which comprises two existing structural columns and an existing structural beam crossing the two existing structural columns, an arch-shaped component is arranged below the existing structural beam, and the arch crown of the arch-shaped component is supported at the beam bottom of the existing structural beam. The arch springing is supported on an existing structural column, structural adhesive is arranged between an arch crown of the arch component and an existing structural beam, the arch crown of the arch component and the existing structural beam are connected through a first post-embedded anchor part, and the arch springing of the arch component and the existing structural column are connected through a second post-embedded anchor part. The reinforcing quality and the bearing capacity of an existing structural beam can be greatly improved, the design difficulty and the construction space limitation are reduced, meanwhile, a penetrating space is provided for equipment pipelines, and the attractiveness of a building can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beam reinforcement, in particular to an arch-supported beam reinforcement system. Background Art

[0002] In the field of construction engineering, due to changes in building functions, increased load conditions or the introduction of new safety standards, the original beams are insufficient in bearing capacity and need to be reinforced. Beam reinforcement methods include carbon fiber pasting, steel wrapping, increasing the cross section, adding beams and columns, and prestressing. Carbon fiber pasting and steel wrapping have limited effects on increasing the bearing capacity of beams. The method of increasing the cross section can greatly improve the bearing capacity of beams, but there are disadvantages such as large on-site wet work workload, high construction difficulty, affecting the use space of buildings, and reducing the life of the original beams. The method of externally bonding steel reinforcement at the bottom of the beam has the disadvantages of limited construction space, affecting the use effect of the building, high design difficulty, and complex force transmission. The prestressed reinforcement method can significantly improve the bearing capacity and stability of the beam, and has a longer service life, but the construction of the prestressed reinforcement method is difficult and requires professional technicians to carry out the construction. In addition, the tensioning of prestressed tendons requires special equipment, so the cost is relatively high.

[0003] Arch is a common structural form, which mainly bears axial force and can effectively transfer the load to the support and surrounding structure along the shape of the arch. It has the advantages of high bearing capacity, good stability, high space utilization, and good aesthetics, and is therefore widely used in construction and bridge engineering. Combining the advantages and disadvantages of the aforementioned methods for strengthening existing structural beams, there is an urgent need for a technology that applies the arch structure to the reinforcement of existing structural beams, so as to effectively improve the reinforcement quality and the bearing capacity of existing structural beams, reduce the design difficulty and construction space restrictions, provide a crossing space for equipment pipelines, and significantly improve the aesthetics of the building. Utility Model Content

[0004] The purpose of the utility model is to provide an arch-supported beam reinforcement system to address the deficiencies of the prior art. The utility model adopts a steel frame arch structure and uses existing structural columns as support feet to support and strengthen existing structural beams. The utility model has a simple design, convenient construction, beautiful shape, and can well enhance the bearing capacity of existing structural beams.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an arch-supported beam reinforcement system, comprising two existing structural columns and an existing structural beam spanning between the two existing structural columns, an arch member is arranged below the existing structural beam, the arch top of the arch member is supported on the beam bottom of the existing structural beam, and the arch foot is supported on the existing structural column, structural glue is applied between the arch top of the arch member and the existing structural beam, and they are connected by a post-planted anchor member 1, and the arch foot of the arch member is connected to the existing structural column by a post-planted anchor member 2.

[0006] Preferably, the arch-shaped member is symmetric about the left and right.

[0007] Preferably, the arch-shaped member is a circular-arc single-arch prefabricated steel structure, and the central angle corresponding to the arch-shaped member is 120° to 180°.

[0008] Preferably, the cross-section of the arch-shaped member is H-shaped or box-shaped.

[0009] Preferably, a plurality of reinforcing plates are arranged along the axial direction of the arch-shaped member, and the plate surface of each reinforcing plate is consistent with the radial direction of the arch-shaped member.

[0010] Preferably, more of the reinforcing plates are arranged per unit length at the crown and springing of the arch-shaped member.

[0011] Preferably, the arch-shaped member is formed by splicing a plurality of arc-shaped prefabricated parts, and the splicing part is connected by bolts.

[0012] Preferably, the arch-shaped member is formed by splicing a plurality of arc-shaped prefabricated parts, and the splicing part is welded. The two adjacent prefabricated parts are inserted in a staggered manner at the welding part; that is, when the cross-section of the arch-shaped member is H-shaped, the splicing seams of the upper and lower flange plates are staggered, and the web of one section is inserted into the other section, and the three splicing seams are not coplanar; when the cross-section of the arch-shaped member is box-shaped, the splicing seams of the four faces of the box are in a "Ji" shape.

[0013] Preferably, the post-embedded anchor one and the post-embedded anchor two are chemical anchor bolts. The post-embedded anchor one is implanted into the existing structural beam through drilling and is connected to the crown of the arch-shaped member. The post-embedded anchor two is implanted into the existing structural column through drilling and is connected to the anchor plate at the springing of the arch-shaped member.

[0014] Preferably, the post-embedded anchor one is a single row of anchor bolts along the width direction of the arch-shaped member, and the post-embedded anchor two is a multi-row of anchor bolts.

[0015] Preferably, the existing structural beam is provided with a connecting anchor plate. The connecting anchor plate is fixed to the existing structural beam through the post-embedded anchor two. The springing of the arch-shaped member is welded to the connecting anchor plate, and a transverse plate for positioning and supporting the arch-shaped member is arranged at the bottom end of the connecting anchor plate.

[0016] Preferably, the nearly triangular area surrounded by the existing structural column, the existing structural beam and the arch-shaped member can be used for the layout of equipment pipelines.

[0017] The beneficial effects of the present utility model are as follows: An arch-supported beam reinforcement system, which uses an arch-shaped member to support at the bottom of an existing structural beam, has the following beneficial effects:

[0018] 1) It can significantly improve the bearing capacity of the original structural beam and reduce the beam deflection;

[0019] 2) The good compression characteristics of the arch can be utilized to make the force more reasonable;

[0020] 3) The arch transmits pressure and shear force to the anchor plate. The pressure can improve the shear resistance of the post-planted anchor bars or anchor bolts, thereby significantly improving the reliability of the connection between the arched member and the existing structural column;

[0021] 4) The construction operation space is larger and the construction is simple, which can effectively improve the construction efficiency and improve the construction quality;

[0022] 5) The force transmission path is clear and the reinforcement principle is clear, which can significantly reduce the design difficulty;

[0023] 6) Equipment pipelines can be passed between the arched member and the existing structural beam, which can significantly improve the space utilization rate;

[0024] 7) The arched member has a beautiful shape and can significantly improve the aesthetics of the building;

[0025] 8) The structure is simple. The arched member can be quickly prefabricated in the factory, is convenient to transport, is simple to construct, is easy to promote, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front view of an arch-supported beam reinforcement system of the utility model;

[0027] Figure 2 yes Figure 1 Medium AA view;

[0028] Figure 3 yes Figure 1 Middle BB view;

[0029] Figure 4 is a schematic diagram of the assembled structure of the arched member having an H-shaped cross section;

[0030] Figure 5 It is a schematic diagram of the assembled structure of the arched member having a box-shaped cross section.

[0031] Description of reference numerals:

[0032] 1——existing structural column, 2——existing structural beam, 3——arch member, 4——post-planted anchor member 1, 5——post-planted anchor member 2, 6——reinforcement plate, 7——connecting anchor plate, 8——cross plate. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0034] like Figures 1 to 5As shown, an arch-supported beam reinforcement system of the present embodiment comprises two existing structural columns 1 and an existing structural beam 2 spanning between the two existing structural columns 1, an arch member 3 is arranged below the existing structural beam 2, the arch top of the arch member 3 is supported on the beam bottom of the existing structural beam 2, and the arch foot is supported on the existing structural column 1, structural glue is applied between the arch top of the arch member 3 and the existing structural beam 2, and a post-planted anchor 4 is used for connection, and the arch foot of the arch member 3 is connected to the existing structural column 1 via a post-planted anchor 5.

[0035] This embodiment uses an arch member 3 with a corresponding central angle of 160° as a supporting and reinforcing structure for the existing structural beam 2. Specifically, the arch member 3 is first prefabricated by welding with steel plates, and after being transported to the construction site, the contact parts of the existing structural column 1 and the existing structural beam 2 with the arch member 3 are polished to make them flat, clean and dry; then the arch member 3 is hoisted to the installation position, and chemical anchor holes are marked and drilled; thirdly, the arch member 3 is positioned and stabilized, the post-planted anchor member 2 5 is passed through the arch foot anchor plate hole of the arch member 3 and inserted into the hole drilled in the existing structural column 1, the post-planted anchor member 1 4 is passed through the arch top hole of the arch member 3 and inserted into the hole drilled in the existing structural beam 2, the post-planted anchor member 1 4 and the post-planted anchor member 2 5 are equipped with nuts, structural glue is injected between the arch member 3 and the existing structural beam 2, and finally the nuts are tightened.

[0036] The cross-section of the arch member 3 of this embodiment is H-shaped, and when the span is large, multi-section on-site splicing welding can be used. In order to prevent the splicing welds from breaking due to excessive shear force, the splicing seams of the upper and lower wing plates of the arch member 3 are staggered, and the web of one section is inserted into the other section, that is, the three splicing seams are not coplanar.

[0037] In addition, a plurality of reinforcing plates 6 are arranged along the axial direction of the arched member 3, and the plate surface of each reinforcing plate 6 is consistent with the radial direction of the arched member 3; at the arch top and arch foot of the arched member 3, more reinforcing plates 6 are arranged per unit length.

[0038] As another installation method, the connecting anchor plate 7 is first fixed to the existing structural column 1 through the post-planted anchor 2 5, and then the arch member 3 is hoisted into place and welded to the connecting anchor plate 7. In order to facilitate the positioning of the arch member 3, the bottom end of the connecting anchor plate 7 is provided with a horizontal plate 8 for positioning and supporting the arch member 3.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, and for the convenience of describing the technical solution, the front, rear, left, right, top, middle, and bottom directions adopted are based on the settings in the accompanying drawings, rather than limiting the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. An arch-supported beam reinforcement system, characterized in that: It includes two existing structural columns and an existing structural beam spanning between the two existing structural columns, an arch member is arranged below the existing structural beam, the arch top of the arch member is supported on the bottom of the existing structural beam, and the arch foot is supported on the existing structural column, structural glue is applied between the arch top of the arch member and the existing structural beam, and they are connected by a post-planted anchor member 1, and the arch foot of the arch member is connected to the existing structural column by a post-planted anchor member 2.

2. The arch-supported beam reinforcement system according to claim 1, characterized in that: The arched component is a single-arch prefabricated steel structure in an arc shape, and the central angle of the arched component is 120° to 180°.

3. The arch-supported beam reinforcement system according to claim 1, characterized in that: The cross section of the arched member is H-shaped or box-shaped.

4. The arch-supported beam reinforcement system according to claim 1, characterized in that: A plurality of reinforcing plates are arranged along the axial direction of the arched component, and the plate surface of each reinforcing plate is consistent with the radial direction of the arched component.

5. The arch-supported beam reinforcement system according to claim 4, characterized in that: More reinforcing plates are arranged per unit length at the arch top and arch foot of the arch member.

6. The arch-supported beam reinforcement system according to claim 1, characterized in that: The arched component is formed by assembling a plurality of arc-shaped prefabricated parts, and the joints are connected by bolts.

7. The arch-supported beam reinforcement system according to claim 3, characterized in that: The arched member is formed by assembling a plurality of arc-shaped prefabricated parts, and welding is adopted at the joints, and two adjacent prefabricated parts are staggered at the welding points; that is, when the cross section of the arched member is H-shaped, the joint seams of the upper and lower wing plates are staggered, and the web of one section is inserted into the other section, and the three joint seams are not coplanar; when the cross section of the arched member is box-shaped, the joint seams of the four surfaces of the box are in the shape of a "J".

8. The arch-supported beam reinforcement system according to claim 1, characterized in that: The post-planted anchor 1 and the post-planted anchor 2 are chemical anchors. The post-planted anchor 1 is implanted into the existing structural beam through drilling and connected to the arch top of the arch component. The post-planted anchor 2 is implanted into the existing structural column through drilling and connected to the anchor plate of the arch foot of the arch component.

9. The arch-supported beam reinforcement system according to claim 1, characterized in that: The first post-planted anchor is a single row of anchor bolts along the width direction of the arch member, and the second post-planted anchor is a multi-row anchor bolt.

10. The arch-supported beam reinforcement system according to claim 1, characterized in that: The existing structural beam is provided with a connecting anchor plate, which is fixed to the existing structural beam through the post-planted anchor member 2. The arch foot of the arch component is welded to the connecting anchor plate, and the bottom end of the connecting anchor plate is provided with a horizontal plate for positioning and supporting the arch component.

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