Temporary supporting structure for cutting and transforming concrete beam
By using adjustable and fine-tuning support components during the demolition of concrete beams and slabs, combined with jacks and steel pads, the problem of uneven stress on cantilever beams and slabs in existing technologies has been solved, achieving uniform stress distribution and stability of the support structure, and preventing cracking.
Patent Information
- Application Number
- CN202520296228.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-21
AI Technical Summary
In existing technologies, the conventional method of directly using steel pipe scaffolding to support concrete beams and slabs during demolition and renovation results in cantilever structures with uneven stress, which may lead to settlement or cracking.
Adjustable and fine-tuning support components are adopted, including jacks, a first steel pipe, a wedge-shaped steel plate, and a second steel pipe. Pre-jacking force is applied by the jacks, combined with steel pads and fillet welds, to ensure the stability and close contact of the support structure and avoid cantilever stress.
It achieves uniform stress distribution on concrete beams and slabs during the cutting process, avoids the formation of cantilever structures, ensures the stability and close contact of the supporting structure, prevents local stress concentration, and provides effective support.
Smart Images
Figure CN223739056U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building technology, and more specifically, it relates to a temporary support structure for the removal and modification of a concrete beam. Background Technology
[0002] In recent years, the national and local governments have gradually increased their support for the renovation of old residential areas, promoting the upgrading and renovation of old residential areas. The methods of backfilling for renovation have been continuously innovated and promoted, and the technical level has also made significant progress. However, the conventional method of directly using steel pipe scaffolding to support the backfilling of concrete beams and slabs after demolition and renovation is still common. This practice often fails to properly backfill the renovated area, resulting in the beams and slabs forming cantilever structures and bearing stress. This can even lead to uneven settlement of the beams and slabs after cantilevering, or cracks in the slab surface and beams and columns. Utility Model Content
[0003] The purpose of this invention is to provide a temporary support structure for the removal and modification of concrete beams, which can support beams and columns.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a temporary support structure for the removal and modification of a concrete beam, comprising an adjustable support assembly and a fine-tuning support assembly arranged sequentially along the axial direction of the horizontal or vertical beam on the floor slab.
[0005] The adjustable support assembly includes a jack installed on the floor slab near the beam and column, and a first steel pipe abutting against the output end of the jack, wherein the first steel pipe abuts against the beam to be dismantled.
[0006] The fine-tuning support assembly includes a wedge-shaped steel plate set on the side of the floor slab closest to the demolition surface, and a second steel pipe set on the side of the wedge-shaped steel plate furthest from the floor slab, the second steel pipe abutting against the beam to be demolished.
[0007] The present invention is further configured such that steel pads are provided between the jack and the first steel pipe, and between the first steel pipe and the beam to be dismantled.
[0008] The present invention is further configured such that when the first steel pipe is installed, a fillet weld is made at the contact position between each steel pad and the first steel pipe.
[0009] The present invention is further provided with steel pads between the wedge-shaped steel plate and the floor slab, between the wedge-shaped steel plate and the second steel pipe, and between the second steel pipe and the beam to be dismantled.
[0010] The present invention is further configured such that: when the second steel pipe is installed, a fillet weld is made at the contact position between each steel pad and the second steel pipe.
[0011] In summary, this utility model has the following beneficial effects: by applying a pre-jacking force to the concrete beam with a jack, it ensures that the beam and slab are subjected to uniform stress during the removal process, avoiding cantilever stress; the first steel pipe and the second steel pipe serve as the main supporting components, working in conjunction with the jack and steel pad to ensure the stability of the supporting structure; the steel pad and wedge-shaped steel plate are used to distribute the load, ensuring close contact between the supporting structure and the concrete beam and floor slab, avoiding local stress concentration and providing tighter support for the demolished concrete beam. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure in an embodiment of the present utility model;
[0013] Figure 2 This is a structural schematic diagram from another perspective in an embodiment of this utility model;
[0014] Figure 3 This is a schematic diagram of the top structure of the fine-tuning component in an embodiment of this utility model;
[0015] Figure 4 This is a schematic diagram of the bottom structure of the fine-tuning component in an embodiment of this utility model.
[0016] In the picture:
[0017] 1. Adjustable support assembly; 11. First steel pipe; 12. Jack; 2. Fine-tuning support assembly; 21. Wedge-shaped steel plate; 22. Second steel pipe; 3. Beam to be demolished; 4. Demolition surface; 5. Floor slab; 6. Steel pad; 7. Fillet weld. Detailed Implementation
[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the protection scope of the present invention.
[0019] It should be noted that if the terms "first," "second," etc., are used in the specification, claims, and accompanying drawings of this utility model, they are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the utility model described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0020] Furthermore, in this utility model, the terms "installation," "setting," "equipped with," "connection," "linking," and "sleeving" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.
[0023] Example
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a temporary support structure for the removal and modification of a concrete beam includes an adjustable support component 1 and a fine-tuning support component 2 arranged sequentially along the axial direction of the horizontal or vertical beam on the floor slab 5.
[0025] Adjustable support assembly 1 includes a jack 12 installed on the floor slab 5 near the beam and column, and a first steel pipe 11 abutting against the output end of the jack 12. The first steel pipe 11 abuts against the beam 3 to be dismantled.
[0026] The fine-tuning support assembly 2 includes a wedge-shaped steel plate 21 set on the floor slab 5 near the demolition surface 4, and a second steel pipe 22 set on the side of the wedge-shaped steel plate 21 away from the floor slab 5, the second steel pipe 22 abutting against the beam 3 to be demolished.
[0027] Steel pads 6 are provided between the jack 12 and the first steel pipe 11, and between the first steel pipe 11 and the beam 3 to be dismantled.
[0028] When the first steel pipe 11 is installed, fillet welds 7 are welded to the contact positions of each steel pad 6 with the first steel pipe 11.
[0029] Steel pads 6 are provided between the wedge-shaped steel plate 21 and the floor slab 5, between the wedge-shaped steel plate 21 and the second steel pipe 22, and between the second steel pipe 22 and the beam to be dismantled 3.
[0030] When the second steel pipe 22 is installed, fillet welds 7 are welded to the contact positions between each steel pad 6 and the second steel pipe 22.
[0031] As a preferred option, the jack 12 can be a screw jack 12 or a hydraulic jack 12. The rated load of the jack 12 is 50 tons, which makes it easy to adjust the support height according to the actual situation during construction and ensure close contact between the support structure and the concrete beam.
[0032] As a preferred option, fillet weld 7 should be 5mm.
[0033] As a preferred option, the wedge-shaped steel plate 21 is made of Q235B material and has dimensions of 250*250*20mm.
[0034] As a preferred option, the seamless steel pipe is made of Q235B material and has a size of Φ159*8mm.
[0035] As a preferred option, the steel pad 6 is made of Q235B material and has dimensions of 250*250*20mm.
[0036] In this embodiment, the adjustable support component 1 is installed first, followed by the fine-tuning support component 2. The beams and slabs in the modified area are unloaded by using jack 12 to ensure that the resistance of the new and old concrete structures can work simultaneously as much as possible after reinforcement.
[0037] Beneficial effects: By applying pre-jacking force to the concrete beam through jack 12, it is ensured that the beam and slab are subjected to uniform stress during the removal process, avoiding cantilever stress. The first steel pipe 11 and the second steel pipe 22 serve as the main supporting components, working in conjunction with jack 12 and steel pad 6 to ensure the stability of the supporting structure. The steel pad 6 and wedge-shaped steel plate 21 are used to distribute the load, ensuring close contact between the supporting structure and the concrete beam and floor slab 5, avoiding local stress concentration and providing tighter support for the demolished concrete beam.
[0038] It should be noted that all features disclosed in this specification, or all steps in all methods or processes disclosed, may be combined in any way, except for mutually exclusive features and / or steps.
[0039] Furthermore, the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this utility model, and these solutions all fall within the scope of this utility model and its protection. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and not intended to limit the scope of the claims. The scope of protection of this utility model is defined by the claims and their equivalents.
Claims
1. A concrete beam cut-out retrofit temporary bracing structure, characterized by, The utility model relates to a kind of adjustable support assembly and fine adjustment support assembly for the demolition of building, including: Floor (5) is sequentially arranged adjustable support assembly (1) and fine adjustment support assembly (2) along beam or stringer axial direction; Adjustable support assembly (1), including jack (12) being arranged on floor (5) near beam column position, first steel pipe (11) being abutted to the output end of the jack (12), the first steel pipe (11) is abutted to the beam (3) to be dismantled; Fine adjustment support assembly (2), including wedge-shaped steel plate (21) being arranged on floor (5) near one side of demolition face (4), second steel pipe (22) being arranged on the side of wedge-shaped steel plate (21) away from floor (5), the second steel pipe (22) is abutted to the beam (3) to be dismantled.
2. The temporary support structure for concrete beam removal and reconstruction according to claim 1, wherein: Steel backing plate (6) is arranged between the jack (12) and the first steel pipe (11) and between the first steel pipe (11) and the beam (3) to be dismantled.
3. A temporary support structure for concrete beam cut-out reconstruction according to claim 2, characterized in that: When the first steel pipe (11) is installed, the contact position of each steel backing plate (6) and the first steel pipe (11) is welded with fillet weld (7).
4. The temporary support structure for concrete beam removal and reconstruction according to claim 1, wherein: Steel backing plate (6) is arranged between the wedge-shaped steel plate (21) and floor (5), between the wedge-shaped steel plate (21) and the second steel pipe (22) and between the second steel pipe (22) and the beam (3) to be dismantled.
5. The temporary support structure for concrete beam removal and reconstruction according to claim 4, wherein: When the second steel pipe (22) is installed, the contact position of each steel backing plate (6) and the second steel pipe (22) is welded with fillet weld (7).