Novel connecting structure for reinforcing floor slab and additionally arranging steel secondary beam
By adding new steel secondary beams to the floor slabs to connect steel plates, combining fasteners and high-strength grouting materials, the problem of insufficient connection reliability and durability of steel secondary beams in the prior art is solved, and efficient floor reinforcement effect is achieved.
Patent Information
- Application Number
- CN202422464793.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The existing floor slab reinforcement and addition of steel sub-beam connection methods have poor reliability and durability, and the construction quality is difficult to guarantee.
Steel secondary beams are used to connect to the steel plate through fasteners, and the gaps are filled with high-strength grouting material. Reinforcement plates are used to enhance the connection stability and optimize the connection structure to ensure the effective transmission of vertical loads and horizontal forces.
It improves the connection reliability and durability between the steel sub-beams and floor slabs, reduces construction wet operations and construction waste, and ensures integrity and reliability of construction quality.
Smart Images
Figure CN223164307U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of construction engineering, and particularly relates to a novel connecting structure for reinforcing and adding steel secondary beams to a floor slab. Background Art
[0002] With the development and changes of society and the past of the construction peak period, the construction of new buildings has decreased, while the stock of existing buildings has increased. In the future urban construction, in order to avoid large-scale demolition and construction and generate a large amount of construction waste, strengthening and reconstructing existing buildings for use is the new normal of urban construction and also a more environmentally friendly and sustainable construction mode. During the urban renewal process, due to the adjustment of building functions, the building floor plan layout has changed, and it is extremely common that the building use load increases and the partition layout changes. The original floor slab reinforcement is difficult to meet the new building function and layout requirements, and the floor slab needs to be reinforced and strengthened.
[0003] Since steel structures have the advantages of light weight, high strength, environmental protection, recyclability, and reduction of construction waste, adding secondary beams when the floor slab span is large is a common structural reinforcement and strengthening solution.
[0004] In view of the above related technologies, the existing design methods for connecting steel secondary beams added to reinforce the floor slab mainly adopt H-shaped steel secondary beams to be connected with the bottom of the existing floor slab using high-strength grouting material or structural adhesive or high-strength cement mortar. However, this connection method has problems such as poor reliability and durability of the connection between the steel secondary beam and the existing floor slab, and it is difficult to ensure the construction quality, so it needs to be improved. Utility Model Content
[0005] In order to improve the reliability and durability of the connection between the steel secondary beam and the floor slab, the present application provides a novel connecting structure for reinforcing and adding steel secondary beams to a floor slab.
[0006] A novel connecting structure for reinforcing and adding steel secondary beams to a floor slab provided by the present application adopts the following technical solutions:
[0007] A novel connecting structure for reinforcing and adding steel secondary beams to a floor slab includes a floor slab main body, main beams, steel secondary beams, and steel plates. The main beams are symmetrically arranged on both sides of the floor slab main body. The steel secondary beams are connected to the bottom of the floor slab main body. The steel plates are connected to the floor slab main body. The steel secondary beams are connected to the steel plates through fasteners. The steel plates are arranged along the length direction of the steel secondary beams.
[0008] By adopting the above technical solution, a secondary steel beam is newly added at the bottom of the main body of the floor slab to be reinforced and strengthened. The newly added secondary steel beam is fixed to the main beams on both sides, and the newly added secondary steel beam and the steel plate are connected together through fasteners. The fasteners act as shear connectors between the secondary steel beam and the concrete floor slab main body, ensuring the vertical load and horizontal force transmission between the floor slab main body and the newly added secondary steel beam, and thus ensuring the integrity, effectiveness and durability of the connection. The design method of adding a secondary steel beam connection for the reinforcement of the floor slab main body reduces the on-site wet operation and construction waste, the overall construction is convenient and simple, the construction quality is reliable and controllable, and the design, construction feasibility and convenience of the reinforcement of the floor slab main body and the newly added secondary steel beam are considered as a whole.
[0009] Preferably, the fastener is a through-plate bolt, the secondary steel beam is an H-shaped steel, and the floor slab main body is provided with a through-hole for the through-plate bolt to pass through. The through-plate bolt is used to lock the upper flange of the secondary steel beam to the steel plate.
[0010] By adopting the above technical solution, the diameter of the through-hole on the floor slab main body is larger than the diameter of the through-plate bolt, so that the through-plate bolt can pass through, and the fixation of the secondary steel beam and the steel plate is realized by relying on the action of the screw force.
[0011] Preferably, the gap between the through-plate bolt and the floor slab main body, and the gap between the floor slab main body and the secondary steel beam are filled and compacted with high-strength grouting material.
[0012] By adopting the above technical solution, the design of filling and compacting the gap between the floor slab main body and the upper flange of the secondary steel beam with high-strength grouting material can further improve the connection firmness between the secondary steel beam and the floor slab main body, and effectively solve the problems of load and horizontal shear force transmission between the concrete floor slab and the added secondary steel beam.
[0013] Preferably, it further includes a reinforcing plate. The reinforcing plate is arranged on the side of the floor slab main body away from the secondary steel beam. The reinforcing plate is locked to the floor slab main body through a locking member, and the steel plate is pressed on the reinforcing plate.
[0014] By adopting the above technical solution, the reinforcing plate can improve the firmness at the connection position between the floor slab main body and the secondary steel beam. At the same time, the steel plate serves as a pressing strip for the reinforcing plate, not only making full use of the steel plate and saving materials, but also further strengthening the integrity and effectiveness of the floor slab main body and the newly added secondary steel beam to achieve the purpose of common action.
[0015] Preferably, the reinforcing plate is made of steel or carbon fiber material.
[0016] By adopting the above technical solution, steel or carbon fiber material has good strength and corrosion resistance, making the prepared reinforcing plate not easily damaged and prolonging the service life.
[0017] Preferably, a plurality of reinforcing plates are arranged in parallel, and the reinforcing plates are spaced apart between the two main beams.
[0018] By adopting the above technical solution, multiple reinforcing plates act together on the floor slab main body, thereby improving the integrity between the floor slab main body and the newly added steel secondary beam.
[0019] Preferably, the locking member is a rivet.
[0020] By adopting the above technical solution, the rivet can fix the reinforcing plate on the floor slab main body, improving the stability of the connection between the two.
[0021] Preferably, two steel plates are arranged in parallel, and the two steel plates are arranged on the upper flange of the steel secondary beam.
[0022] By adopting the above technical solution, the two steel plates can increase the number of connection points between the steel secondary beam and the floor slab main body, thereby improving the connection stability between the newly added steel secondary beam and the floor slab main body.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] (1) By setting the steel plate and the fastener, the fastener locks the steel secondary beam on the steel plate of the floor slab main body. The fastener acts as a shear connector between the steel secondary beam and the concrete floor slab main body, ensuring the vertical load and horizontal force transmission between the floor slab main body and the newly added steel secondary beam, and thus ensuring the integrity, effectiveness and durability of the connection.
[0025] (2) By setting the reinforcing plate, the reinforcing plate improves the stability at the connection position between the floor slab main body and the newly added steel secondary beam, strengthens the integrity, so as to achieve the purpose of acting together.
[0026] (3) By setting the high-strength grouting material, the high-strength grouting material can fill the gap between the floor slab main body and the upper flange of the steel secondary beam, improve the connection firmness between the steel secondary beam and the floor slab main body, and effectively solve the problems of load and horizontal shear force transmission between the concrete floor slab and the added steel secondary beam. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic structural diagram of the connection structure in the embodiment of the present application;
[0028] Figure 2 is Figure 1 the cross-sectional schematic diagram of A-A in
[0029] Reference numerals: 1, floor slab main body; 2, main beam; 3, steel secondary beam; 4, steel plate; 5, fastener; 6, high-strength grouting material; 7, reinforcing plate; 8, locking member. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0030] The technical solutions of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can be embodied in many different forms and is not limited to the embodiments described herein.
[0031] In the description of the present application, the reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics represented in connection with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials, or characteristics represented can be combined in a suitable manner in any one or more embodiments or examples.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non-exclusive inclusion.
[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.
[0034] The following will describe in detail some embodiments of the present application in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and combine the different embodiments or examples represented in the present application and the features of different embodiments or examples.
[0035] The embodiments of the present application disclose a new steel secondary beam connection structure for floor slab reinforcement and addition. Refer to Figure 1, the connection structure includes a floor slab main body 1, main beams 2, secondary steel beams 3 and steel plates 4. The main beams 2 are symmetrically arranged on both sides of the floor slab main body 1. The secondary steel beams 3 are installed at the bottom of the floor slab main body 1. The steel plates 4 are fixedly connected to the floor slab main body 1. The secondary steel beams 3 are connected to the steel plates 4 through fasteners 5. The steel plates 4 are arranged along the length direction of the secondary steel beams 3. In this embodiment, the fasteners 5 are through-plate bolts, and the secondary steel beams 3 are H-shaped steel. Through holes for the through-plate bolts to pass through are provided on the floor slab main body 1. The diameter of the through holes is slightly larger than the outer diameter of the through-plate bolts. The through-plate bolts are used to lock the upper flange of the secondary steel beams 3 onto the steel plates 4, and the fixation between the secondary steel beams 3 and the steel plates 4 is achieved by the action of the screw force. As shown in the figure, there are two parallel steel plates 4, and the two steel plates 4 are located on the upper flange of the secondary steel beams 3.
[0036] By adding new secondary steel beams 3 at the bottom of the floor slab main body 1 that needs to be reinforced, the new secondary steel beams 3 are fixed to the main beams 2 on both sides, and the new secondary steel beams and the steel plates 4 are connected together through fasteners 5. The fasteners 5 play the role of shear connectors between the secondary steel beams 3 and the concrete floor slab main body 1, ensuring the transfer of vertical loads and horizontal forces between the floor slab main body 1 and the new secondary steel beams 3, and thus ensuring the integrity, effectiveness and durability of the connection. The design method of adding and connecting secondary steel beams 3 for the reinforcement of the floor slab main body 1 reduces on-site wet operations and construction waste. The overall construction is convenient and simple, the construction quality is reliable and controllable, and the design, construction feasibility and convenience of the reinforcement of the floor slab main body 1 and the addition of new secondary steel beams 3 are considered as a whole.
[0037] Specifically, in combination with Figure 2 , the gaps between the through-plate bolts and the floor slab main body 1 and the gaps between the floor slab main body 1 and the secondary steel beams 3 are filled and compacted with high-strength grouting material 6. The high-strength grouting material 6 can fill and compact the gaps between the floor slab main body 1 and the upper flange of the secondary steel beams 3, improve the connection firmness between the secondary steel beams 3 and the floor slab main body 1, and effectively solve the problems of load and horizontal shear force transfer between the concrete floor slab and the added secondary steel beams 3.
[0038] In addition, a reinforcing plate 7 is installed on the floor slab main body 1. The reinforcing plate 7 is located on the side of the floor slab main body 1 away from the secondary steel beam 3. The reinforcing plate 7 is locked to the floor slab main body 1 through a locking member 8, and the steel plate 4 is pressed on the reinforcing plate 7. In this embodiment, the locking member 8 is an anchor bolt. The reinforcing plate 7 can improve the firmness at the connection position between the floor slab main body 1 and the secondary steel beam 3. At the same time, the steel plate 4 serves as a pressing strip for the reinforcing plate 7, not only making full use of the steel plate 4 and saving materials, but also further strengthening the integrity and effectiveness of the floor slab main body 1 and the newly added secondary steel beam 3 to achieve the purpose of joint action. Among them, the reinforcing plate 7 can be made of steel or carbon fiber material. The steel or carbon fiber material has good strength and corrosion resistance, making the prepared reinforcing plate 7 not easily damaged and extending the service life. A plurality of reinforcing plates 7 are arranged in parallel. Each reinforcing plate 7 is located between the two main beams 2 and is distributed at intervals along the length direction of the floor slab main body 1. The combined action of multiple reinforcing plates 7 on the floor slab main body 1 can further improve the integrity of the connection between the floor slab main body 1 and the newly added secondary steel beam 3.
[0039] The implementation principle of a novel connection structure for reinforcing and adding a secondary steel beam to a floor slab in an embodiment of the present application is as follows: A secondary steel beam 3 is newly added to the bottom of the floor slab main body 1 that needs to be reinforced. The newly added secondary steel beam 3 is fixed to the main beams 2 on both sides. The newly added secondary steel beam and the steel plate 4 are connected together through a fastener 5. The fastener 5 serves as a shear connector between the secondary steel beam 3 and the concrete floor slab main body 1, ensuring the transfer of vertical loads and horizontal forces between the floor slab main body 1 and the newly added secondary steel beam 3, and thus ensuring the integrity, effectiveness, and durability of the connection. At the same time, the design of filling the gap between the floor slab main body 1 and the upper flange of the secondary steel beam 3 with high-strength grouting material 6 can further improve the connection firmness between the secondary steel beam 3 and the floor slab main body 1, effectively solving the problems of load and horizontal shear force transfer between the concrete floor slab and the added secondary steel beam 3. The connection design method of reinforcing and adding a secondary steel beam 3 to the floor slab main body 1 reduces on-site wet operations and construction waste, is convenient and simple for overall construction, the construction quality is reliable and controllable, and the design, construction feasibility, and convenience of reinforcing the floor slab main body 1 and adding a secondary steel beam 3 are considered as a whole.
[0040] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. A new steel secondary beam connection structure for floor slab reinforcement and addition, characterized in that, It includes a floor slab main body (1), main beams (2), steel secondary beams (3) and steel plates (4). The main beams (2) are symmetrically arranged on both sides of the floor slab main body (1). The steel secondary beams (3) are connected to the bottom of the floor slab main body (1). The steel plates (4) are connected to the floor slab main body (1). The steel secondary beams (3) are connected to the steel plates (4) through fasteners (5). The steel plates (4) are arranged along the length direction of the steel secondary beams (3).
2. The novel steel secondary beam connection structure for floor slab reinforcement according to claim 1, wherein, The fasteners (5) are through-plate bolts. The steel secondary beams (3) are H-shaped steel. Through holes for the through-plate bolts to pass through are formed in the floor slab main body (1). The through-plate bolts are used to lock the upper flanges of the steel secondary beams (3) to the steel plates (4).
3. A novel steel secondary beam connection structure for floor slab reinforcement as claimed in claim 2, characterized in that, The gaps between the through-plate bolts and the floor slab main body (1), and the gaps between the floor slab main body (1) and the steel secondary beams (3) are filled and compacted with high-strength grouting material (6).
4. A novel steel secondary beam connection structure for floor slab reinforcement as claimed in claim 1, characterized in that, It further includes reinforcing plates (7). The reinforcing plates (7) are arranged on the side of the floor slab main body (1) away from the steel secondary beams (3). The reinforcing plates (7) are locked to the floor slab main body (1) through locking parts (8). The steel plates (4) are pressed on the reinforcing plates (7).
5. A novel connection structure for adding steel secondary beams to reinforce a floor slab according to claim 4, characterized in that, The reinforcing plates (7) are made of steel or carbon fiber materials.
6. A novel steel secondary beam connection structure for floor slab reinforcement as claimed in claim 4, characterized in that, A number of the reinforcing plates (7) are arranged in parallel. Each of the reinforcing plates (7) is spaced and distributed between the two main beams (2).
7. A novel connection structure for adding a steel secondary beam for floor slab reinforcement according to claim 4, characterized in that, The locking parts (8) are anchor bolts.
8. A novel steel secondary beam connection structure for floor slab reinforcement as claimed in claim 2, wherein Two steel plates (4) are arranged in parallel. The two steel plates (4) are arranged on the upper flanges of the steel secondary beams (3).