Reinforced concrete beam convenient for static crushing
By setting closed stirrups, open stirrups and stretchers on reinforced concrete beams, and using foam fillers and pre-embedded pipes, the problem of difficult to control the crushing effect caused by stirrup constraints in the prior art is solved, and high efficiency is achieved , safe static crushing effect replaces the use of seam opening machines and meets the stress performance and safety requirements of reinforced concrete beams.
Patent Information
- Application Number
- CN202420619973.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-03-28
AI Technical Summary
When removing reinforced concrete beams, the crushing effect is difficult to control due to the existence of stirrups, and the use of the seam opener is dangerous and inconvenient to operate, especially on beams with smaller widths, which limits the technology. Application.
A reinforced concrete beam is designed to facilitate static crushing. By setting closed stirrups on the periphery of the concrete beam, open stirrups and stretchers are set inside, and a reserved port is set on the side of the beam, and the embedded pipe is fixed to the stretcher and On the open stirrup, the stirrups are covered with foam filler for easy cutting. Instead of the seam opening machine, use reinforcement pliers to cut the stirrups, and then dismantle them by infusing the static crushing agent through the embedded pipe.
It improves the static crushing efficiency, reduces the risk to construction workers, meets the stress performance and safety requirements of reinforced concrete beams, and realizes a convenient demolition process.
Smart Images
Figure CN222120733U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a reinforced concrete beam which is convenient for static crushing and belongs to the technical field of building structures. Background Art
[0002] Civil engineering structures often need to set up some temporary supports during the construction process. For example, during the excavation of the foundation pit, it is often necessary to cast reinforced concrete beams inside the foundation pit as foundation pit support, which needs to be removed after the foundation pit construction is completed. Static crushing technology, as a green and environmentally friendly demolition technology, can effectively reduce noise, dust and other pollution during the demolition process, and is a beneficial supplement to traditional demolition methods.
[0003] Reinforced concrete beams need to bear large axial forces, bending moments and shear forces during operation, so they need to be equipped with sufficient stirrups. The presence of stirrups makes it difficult to control the crushing effect during static crushing and demolition. The main reason is that the stirrups can effectively restrain the deformation of the concrete beam, resulting in cracks caused by the expansion of the crushing agent that are not easy to expand in the concrete. At present, before static crushing of reinforced concrete beams, a slotting machine is often used to cut the stirrups first. The slotting machine can only cut the stirrups on the upper surface of the concrete beam, and the slotting machine walking on the concrete beam is dangerous for construction operators. In addition, for many concrete beams with smaller widths, there is also the problem that the slotting machine cannot walk on the concrete beam, which greatly limits the application of static crushing technology.
[0004] Therefore, in order to solve the above technical problems, it is necessary to provide an innovative concrete beam that is easy to be statically crushed to overcome the above defects in the prior art. Utility Model Content
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: it includes a concrete beam and longitudinal steel bars, and also includes closed stirrups, open stirrups, tension bars and a plurality of embedded pipes, wherein the closed stirrups are located on the periphery of the concrete beam; the open stirrups, the middle open stirrups and the tension bars are located inside the concrete beam and tied to the closed stirrups; reserved openings are opened on the left side, the right side and the upper side of the concrete beam; the embedded pipes are fixed on the tension bars and the middle open stirrups.
[0006] By adopting the above technical solution, the closed stirrups and open stirrups at the reserved opening are not covered with concrete, so it is convenient to release the constraints of the stirrups on the concrete beam by cutting off the closed stirrups and open stirrups at the reserved opening, thereby improving the static crushing efficiency. When it is necessary to release the constraints of the stirrups on the concrete beam, the stirrups can be cut off by steel bar pliers, without the need for other large-scale mechanical equipment.
[0007] The utility model provides a reinforced concrete beam that is convenient for static crushing, and is further configured as follows: closed stirrups and open stirrups pass through the reserved openings.
[0008] The utility model provides a reinforced concrete beam that is convenient for static crushing, and is further configured as follows: the reserved opening is filled with a foaming filler.
[0009] By adopting the above technical solution, the closed stirrups and open stirrups at the reserved opening will be covered by the foaming filler instead of being covered by concrete, thereby facilitating cutting of the closed stirrups and open stirrups at the reserved opening.
[0010] The utility model provides a reinforced concrete beam that is convenient for static crushing, and is further configured as follows: both ends of the tension reinforcement are tied and fixed on the closed stirrups.
[0011] The utility model provides a reinforced concrete beam that is convenient for static crushing, and is further configured as follows: the diameter of the tension bar is 6 mm.
[0012] The utility model provides a reinforced concrete beam which is convenient for static crushing, and is further arranged as follows: the embedded pipe is tied to the tension reinforcement and the middle opening stirrup.
[0013] The embedded pipe can be fixed in the middle of the concrete beam by the tension reinforcement and the middle open stirrup. Thus, the reinforced concrete beam can be broken and removed by pouring static crushing agent into the embedded pipe.
[0014] The utility model provides a reinforced concrete beam that is convenient for static crushing, and is further configured as follows: the number of pre-buried pipes is four.
[0015] The utility model provides a reinforced concrete beam convenient for static crushing, which is further arranged as follows: the upper and lower ends of the middle opening stirrups are bound with the closed stirrups, and can be used as a support for the embedded pipe at the same time.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] 1. The utility model discloses a reinforced concrete beam which is convenient for static crushing. By cutting off the open stirrups and the closed stirrups at the reserved openings, the constraints of the stirrups on the concrete beam are released, thereby improving the static crushing efficiency.
[0018] 2. The utility model provides a reinforced concrete beam that is convenient for static crushing, and reserved openings are arranged on the upper surface and in the middle of the left and right sides, and stirrups are coated with a foaming filler at the reserved openings.
[0019] 3. The utility model provides a reinforced concrete beam that is convenient for static crushing. When it is necessary to release the constraints of stirrups on concrete, a steel bar clamp can be used instead of large machines such as a seaming machine, thereby facilitating construction.
[0020] 4. The utility model provides a reinforced concrete beam that is easy to be statically crushed, meets the requirements for reinforced concrete beams in the national standards, has good force-bearing performance, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is the cross-section of a reinforced concrete beam;
[0022] Figure 2 It is a cross-sectional view of a reinforced concrete beam after the stirrups are cut off and the crushing agent is poured;
[0023] Figure 3 This is the fixing diagram of the embedded pipe of reinforced concrete beam;
[0024] Figure 4 It is the combined stirrup diagram of reinforced concrete beam. DETAILED DESCRIPTION
[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0026] Please refer to the instruction manual Figure 1 To Attachment Figure 4 As shown, it includes a concrete beam 1 and a plurality of longitudinal steel bars installed in the concrete beam 1, and also includes closed stirrups 3, open stirrups 4, middle open stirrups 5, tie bars 6 and a plurality of embedded pipes 7. The closed stirrups 3 are located on the periphery of the concrete beam 1; the open stirrups 4, middle open stirrups 5 and tie bars 6 are located inside the concrete beam 1 and are tied and fixed to the closed stirrups 3.
[0027] The reserved openings 2 are opened on the left, right and upper sides of the concrete beam 1. The reserved openings 2 are filled with a foaming filler, and the closed stirrups 3 and the open stirrups 4 pass through the reserved openings 2, so that the closed stirrups 3 and the open stirrups 4 at the reserved openings 2 are all covered with the foaming filler, so as to release the constraints of the stirrups on the concrete beam 1 before static crushing, thereby improving the efficiency of static crushing. When the stirrups need to be cut, steel bar clamps can be used instead of large machines such as seam opening machines.
[0028] The reinforced concrete beam structure also includes a tie bar 6, one end of which is tied to the closed stirrup 3 at the left reserved opening 2, and the other end is tied to the closed stirrup 3 at the right reserved opening 2. The embedded pipe 7 is tied and fixed to the middle open stirrup 5 and the tie bar 6, so that the embedded pipe is fixed in the middle of the concrete beam 1. After the stirrup is cut off at the reserved opening 2, the concrete beam 1 can be broken and removed by pouring a static crushing agent 8 into the embedded pipe 7. As a preferred embodiment, the number of embedded pipes 7 is four, and the diameter of the tie bar 6 is 6 mm.
[0029] The working principle of the reinforced concrete beam convenient for static crushing of the utility model is as follows:
[0030] First, cut and process the closed stirrups 3, open closed stirrups 4, middle open stirrups 5, and tension bars 6. Tie one end of the hook of the open stirrup 4 to the lower side of the closed stirrup 3, and tie the other three sides to the upper side of the closed stirrup 3 and the middle of the left and right sides. Tie and fix the middle open stirrup 5 and the closed stirrup 3 at both ends; tie the two ends of the tension bar 6 to the closed stirrup 3 to form a combined stirrup. Tie the combined stirrups to the longitudinal steel bars in the formwork. Spray the foam filler at the reserved opening 2 until the closed stirrup 3, the open stirrup 4, and the middle open stirrup 5 at the reserved opening 2 are all covered with the foam filler. Tie and fix the four embedded pipes 7 to the middle open stirrup 5 and the tension bar 6, and pour concrete to form a concrete beam 1.
[0031] When the concrete beam 1 needs to be dismantled, first use steel bar pliers to cut off the closed stirrups 3 and the open stirrups 4 in the three reserved openings 2 at each cross-section position that needs to be broken, then pour the static crushing agent 8, break and remove the concrete on both sides of the middle open stirrup 5, and cut off the exposed longitudinal steel bars.
[0032] The above specific implementation methods are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A reinforced concrete beam that is easy to be statically crushed, comprising a concrete beam and longitudinal steel bars, characterized in that: It also includes closed stirrups, open stirrups, tension bars and several embedded pipes, wherein the closed stirrups are located on the periphery of the concrete beam; the open stirrups, middle open stirrups and tension bars are located inside the concrete beam and tied to the closed stirrups; reserved openings are opened on the left side, right side and top side of the concrete beam; the embedded pipes are fixed on the tension bars and the middle open stirrups.
2. A reinforced concrete beam that is easy to be statically crushed according to claim 1, characterized in that: Closed stirrups and open stirrups pass through the reserved openings.
3. A reinforced concrete beam that is easy to be statically crushed according to claim 1, characterized in that: The reserved opening is filled with foam filler.
4. A reinforced concrete beam that is easy to be statically crushed according to claim 1, characterized in that: Both ends of the tie bars are tied and fixed to the closed stirrups.
5. A reinforced concrete beam that is easy to be statically crushed according to claim 4, characterized in that: The diameter of the reinforcement is 6 mm.
6. A reinforced concrete beam that is easy to be statically crushed according to claim 5, characterized in that: The embedded pipe is tied to the tension reinforcement and the middle open stirrup.
7. A reinforced concrete beam that is easy to be statically crushed according to claim 6, characterized in that: The number of pre-buried pipes is four.
8. A reinforced concrete beam that is easy to be statically crushed according to claim 6, characterized in that: The upper and lower ends of the middle open stirrups are tied to the closed stirrups and can also serve as supports for the embedded pipes.