Floor reinforcement structure for mounting a vibrating device

Abstract

This invention proposes a floor slab reinforcement structure for installing vibration equipment, belonging to the field of building structure reinforcement technology. To address the low efficiency of existing floor slab reinforcement methods, the floor slab reinforcement structure for installing vibration equipment includes a floor slab (1), a main beam (2), and a square steel pipe structural beam (3). The square steel pipe structural beam (3) is located in the vibration equipment installation area (4). The square steel pipe structural beam (3) contains square steel pipes (31). The square steel pipe structural beam (3) is perpendicular to the main beam (2), and is connected and fixed to both the floor slab (1) and the main beam (2). The steel structural beam is lightweight and has high strength, which can significantly improve the overall stiffness, vibration resistance, and fatigue resistance of the floor slab, effectively weakening the floor slab vibration response generated by the operation of the vibration equipment, avoiding resonance and structural damage caused by long-term dynamic loads, and ensuring the floor slab's load-bearing safety.

Description

Technical Field

[0001] This invention relates to the field of building structure reinforcement technology, specifically a floor slab reinforcement structure for installing vibration equipment. Background Technology

[0002] In industrial, public, and special-function buildings, floor slabs, as core load-bearing components, often accommodate various vibrating equipment, such as pumps, fans, motors, and crushers in industrial production, and air conditioning units, water pumps, and elevator equipment in civil and public buildings. During operation, this equipment continuously generates periodic vibration loads, which are transferred to the floor slab structure through the equipment foundation. This breaks the floor slab's static load-bearing state, creating a composite load-bearing system where dynamic and static loads are superimposed.

[0003] When equipment vibration is transmitted to the floor slab, if the natural frequency of the floor slab is close to or coincides with the vibration frequency of the equipment, resonance is very likely to occur. This will not only amplify the vibration amplitude of the floor slab and cause continuous vibration deformation of the floor slab structure, but also lead to structural damage such as degradation of the bond performance between the floor slab steel bars and concrete, cracking of component joints, and local loosening and spalling of concrete under long-term action, reducing the load-bearing capacity and durability of the floor slab, and in severe cases, even affecting the overall structural safety of the floor slab.

[0004] A common method for reinforcing floor slabs is to add reinforced concrete beams underneath. For example, Chinese patent document CN109469349A, published on March 15, 2019, discloses "A Method for Strengthening and Modifying Floor Slabs by Adding Reinforced Concrete Secondary Beams." Although the construction process involves traditional concrete formwork, rebar tying, pouring, and curing, and is technically mature, the following problems still exist: 1. It requires the erection of full-span scaffolding and customized formwork, and involves a large investment in auxiliary materials and labor; reinforcement and renovation projects generally have limited on-site working space, which increases construction costs, affects construction quality, and results in a higher overall cost.

[0005] 2. The construction process involves many steps (formwork erection → reinforcement binding → pouring → curing), with a long curing period and a long construction period. Generally, the amount of reinforced concrete occupies a large space under the floor slab, which has a significant impact on the original functions of the building (such as pipeline layout and clear height). In addition, the self-weight of the newly added beams after pouring is large, which will significantly increase the load on the floor slab and the beams, columns and foundations below, which may cause secondary stress problems. In some cases, the lower structure needs to be checked and reinforced at the same time. Summary of the Invention

[0006] To address the inefficiency of existing floor slab reinforcement methods, this invention provides a floor slab reinforcement structure for installing vibration equipment. This structure, specifically designed for the reinforcement needs of floors with vibration equipment, adds appropriately sized steel square tube beams beneath the floor slab, corresponding to areas of concentrated equipment load and weak points in the floor. The lightweight and high-strength steel beams significantly improve the overall stiffness, vibration resistance, and fatigue resistance of the floor slab, effectively reducing the floor vibration response generated by the operation of the vibration equipment, avoiding resonance and structural damage caused by long-term dynamic loads, and ensuring the floor slab's load-bearing safety.

[0007] The technical solution adopted by the embodiments of the present invention to solve its technical problem is as follows: A floor slab reinforcement structure for installing vibration equipment includes a floor slab and a main beam connected vertically. The floor slab reinforcement structure for installing vibration equipment also includes a square steel pipe structural beam located in the vibration equipment installation area. The square steel pipe structural beam contains square steel pipes and is perpendicular to the main beam. The square steel pipe structural beam is connected and fixed to both the floor slab and the main beam.

[0008] The beneficial effects of the embodiments of the present invention are: 1. Steel structure beams are lightweight and high-strength, which can significantly improve the overall stiffness, vibration resistance, and fatigue resistance of the floor slab. They can effectively reduce the floor slab vibration response caused by the operation of vibrating equipment, avoid resonance and structural damage caused by long-term dynamic loads, and ensure the floor slab's load-bearing safety.

[0009] 2. The construction process is simple, requiring no long maintenance period. Welding, bolting and other connection methods are efficient and convenient, which can shorten the construction period and reduce interference with the original function of the building, especially suitable for the reinforcement needs of existing buildings.

[0010] 3. The steel structure beams have strong adaptability and can be flexibly selected according to the equipment load and the weakness of the floor slab. The force transmission path is clear, and the connection with the original structure is firm, which can achieve coordinated force bearing. At the same time, it avoids significantly increasing the additional load on the floor slab and the substructure, and reduces the risk of secondary reinforcement.

[0011] 4. Steel structure components can be prefabricated, are easy to install on site, have high construction precision, and are easy to maintain. They balance reinforcement effect and economy, are suitable for reinforcement scenarios of floor slabs with various vibration equipment, and have strong engineering application value. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0013] Figure 1This is a top view schematic diagram of the floor slab reinforcement structure for installing vibration equipment as described in this invention.

[0014] Figure 2 It is along Figure 1 Cross-sectional view along the AA direction.

[0015] Figure 3 It is along Figure 2 Cross-sectional view along the BB direction.

[0016] The annotations in the attached figures are explained as follows: 1. Floor slab; 2. Main beam; 3. Square steel pipe structural beam; 4. Vibration equipment installation area; 11. Upright bolt; 12. Upper nut; 13. Upper washer; 21. Rebar installation; 22. U-shaped steel plate components; 31. Square steel pipe; 32. Steel rib strip; 33. Expansion bolt; 34. Lower nut; 35. Concrete; 36. Steel wedge; 37. Grouted concrete layer; 41. Power equipment; 221. Side plate; 222. Bottom plate; 311. Pressure grouting port. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] For ease of understanding and description, the following description of the present invention uses absolute positional relationships. Unless otherwise specified, the directional term "above" indicates... Figure 2 The direction above, the directional word "down" indicates Figure 2 The lower side of the middle, the directional word "left" indicates Figure 2 The left side of the direction, the directional word "right" indicates Figure 2 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 2 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 2 The orientation of the paper is pointed outwards from the viewpoint of the reader or user. This invention is described from the perspective of the reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them according to actual needs or a limited number of experiments.

[0019] like Figure 1 , Figure 2 , Figure 3As shown in the figure, the floor slab reinforcement structure for installing vibration equipment described in this embodiment includes a floor slab 1 and a main beam 2 connected vertically. The floor slab reinforcement structure for installing vibration equipment also includes a square steel pipe beam 3. The square steel pipe beam 3 is located in the vibration equipment installation area 4 of the floor slab 1. A power device 41 is installed in the vibration equipment installation area 4. The square steel pipe beam 3 contains square steel pipes 31, and the extension direction of the square steel pipe beam 3 is perpendicular to the extension direction of the main beam 2. The square steel pipe beam 3 is directly or indirectly connected and fixed to both the floor slab 1 and the main beam 2. The square steel pipe beam 3 is reliably connected to the original floor slab 1 and the load-bearing main beam 2, ensuring stable force transmission. This allows the newly added steel structure beam to form a collaborative force-bearing system with the original floor slab, rapidly improving the overall stiffness, vibration resistance, and fatigue resistance of the floor slab. It optimizes the force transmission path of the floor slab, effectively weakens the floor vibration response generated by the operation of the vibration equipment, meets the load-bearing and vibration-resistant reinforcement requirements of the floor slab for vibration equipment, and is suitable for projects requiring convenient construction and controllable construction period.

[0020] like Figure 2 As shown, multiple reinforcing bars 21 are installed inside the main beam 2. The extension direction of the reinforcing bars 21 is perpendicular to the extension direction of the main beam 2. The reinforcing bars 21 pass through the main beam 2. A U-shaped steel plate 22 is matchedly connected to the outside of the main beam 2. The U-shaped steel plate 22 contains two side plates 221 connected vertically and a bottom plate 222. The ends of the reinforcing bars 21 are connected (e.g., welded) to the side plates 221 of the U-shaped steel plate 22 for fixation.

[0021] The floor reinforcement structure for installing vibration equipment also includes vertical bolts 11, which pass through the floor slab 1 and extend along the front-back direction of the main beam 2. The vertical bolts 11 are located on the left and right sides of the main beam 2, with the upper end of the vertical bolts 11 located above the floor slab 1 and the middle and lower parts of the vertical bolts 11 located below the floor slab 1.

[0022] The upper part of the upright bolt 11 is connected and fixed to the floor slab 1 via the upper nut 12 and the upper washer 13. The middle and lower parts of the upright bolt 11 are welded and fixed to the side upright plate 221 of the U-shaped steel plate 22. The U-shaped steel plate 22 is connected and fixed to the upright bolt 11 via the reinforcing bar 21, providing a stable foundation for the installation and fixing of the square steel pipe 31, ensuring that the square steel pipe 31 is reliably connected to the original load-bearing main beam, and ensuring stable force transmission.

[0023] like Figure 2 , Figure 3As shown, the floor slab 1 and the square steel tube structural beam 3 are arranged vertically. The square steel tube structural beam 3 is located between two adjacent main beams 2. The ends (left and right ends) of the square steel tube 31 are welded and fixed to the side plates 221 of the U-shaped steel plate 22. The side plates 221 of the U-shaped steel plate 22 may have installation ports, and the ends of the square steel tube 31 are matched and inserted into the installation ports. The number and spacing of the square steel tube structural beams 3, as well as the size and model of the square steel tube 31, can be obtained according to needs, experience, limited experiments, or calculations.

[0024] To facilitate the connection and fixation of the square steel pipe 31 to the floor slab 1, the square steel pipe structural beam 3 also includes steel rib strips 32. The square steel pipe 31 and the steel rib strips 32 are connected (e.g., welded) and fixed as a whole. Both the square steel pipe 31 and the steel rib strips 32 extend in the left and right direction. The steel rib strips 32 are fixed on the front and rear sides of the square steel pipe 31. The two steel rib strips 32 are symmetrical front and back and are mirror images of each other.

[0025] like Figure 2 , Figure 3 As shown, the steel rib strip 32 is a long strip structure. The steel rib strip 32 is horizontal. The upper end face of the steel rib strip 32 is flush with the upper end face of the square steel pipe 31. The thickness of the steel rib strip 32 is greater than or equal to the wall thickness of the square steel pipe 31.

[0026] The steel rib strip 32 is connected and fixed to the floor slab 1 by expansion bolts 33 and lower nuts 34. The expansion bolts 33 are in an upright state, and the upper part of the expansion bolts 33 is the expansion part, which is located inside the floor slab 1.

[0027] like Figure 2 , Figure 3 As shown, to increase the stiffness of the square steel tube structural beam 3, grouting can be performed inside the square steel tube 31. For example, a pressure grouting port 311 is provided on the side wall of the square steel tube 31, and the internal cavity of the square steel tube 31 is filled with concrete 35. Grouting the inside of the square steel tube 31 can widen the gap between the natural frequency of the structure and the vibration frequency of the equipment, thereby reducing the forced vibration effect on the floor slab.

[0028] Floor slab 1 and square steel tube structural beam 3 are arranged alternately on the floor. Steel wedges 36 and grouting concrete layer 37 are provided between floor slab 1 and square steel tube 31. The steel wedges 36 and grouting concrete layer 37 are arranged alternately along the extension direction of square steel tube 31.

[0029] like Figure 2 , Figure 3As shown, steel wedges 36 are driven between the floor slab 1 and the square steel pipe 31, and concrete is poured to form a grouting concrete layer 37. With the help of expansion bolts 33, the steel structure beam can be firmly connected to the bottom of the original floor slab. This allows the newly added steel structure beam and the original floor slab to form a synergistic force-bearing system, which can quickly improve the overall stiffness, vibration resistance and fatigue resistance of the floor slab, optimize the force transmission path of the floor slab, effectively reduce the floor vibration response caused by the operation of the vibrating equipment, meet the load-bearing and vibration-resistant reinforcement requirements of the floor slab of the vibrating equipment, and meet the engineering requirements of convenient construction and controllable construction period.

[0030] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, substitutions of equivalent components, or equivalent changes and modifications made within the scope of protection of the present invention, should still fall within the scope of the present invention. Furthermore, the technical features, technical solutions, and embodiments of the present invention can be freely combined and used.

Claims

1. A floor slab reinforcement structure for installing vibration equipment, comprising a floor slab (1) and a main beam (2) connected vertically, characterized in that, The floor reinforcement structure for installing vibration equipment also includes a square steel pipe structure beam (3), which is located in the vibration equipment installation area (4). The square steel pipe structure beam (3) contains a square steel pipe (31), which is perpendicular to the main beam (2). The square steel pipe structure beam (3) is connected and fixed to both the floor slab (1) and the main beam (2).

2. The floor slab reinforcement structure for installing vibration equipment according to claim 1, characterized in that, A reinforcing bar (21) is installed inside the main beam (2). The extension direction of the reinforcing bar (21) is perpendicular to the extension direction of the main beam (2). The reinforcing bar (21) passes through the main beam (2). A U-shaped steel plate (22) is matchedly connected to the outside of the main beam (2). The U-shaped steel plate (22) contains a side plate (221) and a bottom plate (222) connected vertically. The end of the reinforcing bar (21) is connected and fixed to the side plate (221) of the U-shaped steel plate (22).

3. The floor slab reinforcement structure for installing vibration equipment according to claim 2, characterized in that, The floor reinforcement structure for installing vibration equipment also includes a vertical bolt (11), which passes through the floor slab (1). The upper end of the vertical bolt (11) is located above the floor slab (1), and the middle and lower parts of the vertical bolt (11) are located below the floor slab (1).

4. The floor slab reinforcement structure for installing vibration equipment according to claim 3, characterized in that, The upper part of the upright bolt (11) is connected and fixed to the floor slab (1) by the upper nut (12) and the upper pad (13). The middle and lower parts of the upright bolt (11) are welded and fixed to the side plate (221) of the U-shaped steel plate (22).

5. The floor slab reinforcement structure for installing vibration equipment according to claim 2, characterized in that, The floor slab (1) and the square steel pipe structural beam (3) are set up one above the other. The square steel pipe structural beam (3) is located between two adjacent main beams (2). The end of the square steel pipe (31) is welded and fixed to the side plate (221) of the U-shaped steel plate (22).

6. The floor slab reinforcement structure for installing vibration equipment according to claim 1, characterized in that, The square steel pipe structure beam (3) also contains steel rib strips (32). The square steel pipe (31) and the steel rib strips (32) both extend in the left and right directions. The steel rib strips (32) are fixed to the front and rear sides of the square steel pipe (31).

7. The floor slab reinforcement structure for installing vibration equipment according to claim 6, characterized in that, The steel rib strip (32) is a long strip structure. The steel rib strip (32) is horizontal. The upper end face of the steel rib strip (32) is flush with the upper end face of the square steel pipe (31). The thickness of the steel rib strip (32) is greater than or equal to the wall thickness of the square steel pipe (31).

8. The floor slab reinforcement structure for installing vibration equipment according to claim 6, characterized in that, The steel rib strip (32) is connected and fixed to the floor slab (1) by expansion bolts (33) and lower nuts (34). The expansion bolts (33) are in an upright state, and the upper part of the expansion bolts (33) is located inside the floor slab (1).

9. The floor slab reinforcement structure for installing vibration equipment according to claim 1, characterized in that, A pressure grouting port (311) is provided on the side wall of the square steel pipe (31), and the internal cavity of the square steel pipe (31) is filled with concrete (35).

10. The floor slab reinforcement structure for installing vibration equipment according to claim 6, characterized in that, A steel wedge (36) and a grouting concrete layer (37) are provided between the floor slab (1) and the square steel pipe (31), and the steel wedge (36) and the grouting concrete layer (37) are arranged alternately along the extension direction of the square steel pipe (31).

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