Variable-cross-section T-beam steel reinforcement framework
By designing a variable cross-section T-beam reinforcement cage and using a combination of transverse reinforcement in the top slab, stirrups in the web, and longitudinal reinforcement, the problem of time-consuming and labor-intensive traditional manual processing was solved, and mechanized production and improved structural stability were achieved.
Patent Information
- Application Number
- CN202520386057.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In traditional construction methods, the processing and assembly of steel bars for variable cross-section T-beams mainly rely on manual labor, which is time-consuming and labor-intensive, and the quality is difficult to guarantee. Especially when the cross-section increases near the support of large-span prefabricated T-beams, the steel bar arrangement is irregular, making mechanized processing difficult.
A variable cross-section T-beam reinforcement cage is designed, including transverse reinforcement in the top slab, stirrups in the web, and longitudinal reinforcement. By combining fixed areas and bending designs, a T-beam reinforcement cage suitable for mechanized production is formed. The transverse part of the top slab and the longitudinal part of the web are combined to form the T-beam reinforcement cage.
Mechanized processing of T-beam reinforcement cages has been achieved, improving production efficiency and structural stability, enhancing overall strength, and making it suitable for T-beam structures with complex cross-sectional changes.
Smart Images
Figure CN223837892U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel reinforcement cage technology, specifically to a variable cross-section T-beam steel reinforcement cage. Background Technology
[0002] Steel-framed simply supported T-beams are a structural type used in small and medium-span bridges. The main materials are steel bars and concrete. The fabrication process of precast beams usually includes steps such as steel bar processing, assembly and welding, concrete pouring and prestressing tensioning. Among these, steel bar processing and assembly are key links, which directly affect the quality and efficiency of precast beams. In traditional construction methods, these tasks are mainly done manually, which is time-consuming, labor-intensive, and makes it difficult to guarantee quality.
[0003] However, due to the complexity of T-beam structures, the shapes and sizes of the reinforcing bars vary, and machinery cannot meet all the requirements for reinforcing bar processing. In particular, for large-span prefabricated T-beams, the cross-section increases near the support, the reinforcing bar arrangement is irregular, and the longitudinal reinforcing bars have a gradually changing shape, making the processing method more difficult. Therefore, a variable cross-section T-beam reinforcing bar skeleton is proposed. Utility Model Content
[0004] In order to solve the technical problems existing in the prior art, the present invention provides a variable cross-section T-beam steel reinforcement cage.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a variable cross-section T-beam reinforcement cage, comprising several sets of top plate transverse reinforcement and web stirrups. The several sets of top plate transverse reinforcement are arranged longitudinally at a certain interval. Two sets of top plate longitudinal reinforcement are respectively arranged above the interior of the top plate transverse reinforcement, and two other sets of top plate longitudinal reinforcement are respectively arranged below the interior of the top plate transverse reinforcement. The top plate longitudinal reinforcement passes through each set of top plate transverse reinforcement. The top plate longitudinal reinforcement and the top plate transverse reinforcement together form the top plate transverse part. Several sets of web stirrups are provided. The several sets of web stirrups and the top plate transverse reinforcement are arranged longitudinally at a certain interval. Several sets of web longitudinal reinforcement are provided on both sides inside the web stirrups. The web stirrups and the web longitudinal reinforcement together form the web longitudinal part. The top plate transverse part and the web longitudinal part are combined to form the T-beam reinforcement cage.
[0006] Preferably, the number of transverse reinforcement bars in the top slab and the number of stirrups in the web are consistent, and a set of transverse reinforcement bars in the top slab and a set of stirrups in the web constitute a corresponding group, with the transverse reinforcement bars in the top slab and the stirrups in the web fitting together within a corresponding group.
[0007] Preferably, the overlapping portion of the top slab transverse reinforcement and the web stirrups is a combined fixing area, and several sets of top slab and web cross reinforcements are inserted in the fixing area. The top slab and web cross reinforcements are located at the intersection of the top slab transverse reinforcement and the web stirrups.
[0008] Preferably, the bottom end of the transverse reinforcement of the top slab is located inside the web stirrups, and a set of cross reinforcement bars of the top slab web are connected between the bottom ends of several sets of transverse reinforcement of the top slab.
[0009] Preferably, the ends of the longitudinal reinforcement bars in the web are formed with continuous bends, and several groups of longitudinal reinforcement bars in the web are arranged symmetrically on the surface of the web stirrups.
[0010] Preferably, the length of the web stirrups located at the continuous bends at the ends of the longitudinal reinforcement bars in the web increases synchronously with the increase of the opening width of the continuous bends at the ends of the longitudinal reinforcement bars in the web, and the length of the web stirrups located in the straight portion in the middle of the longitudinal reinforcement bars in the web is consistent with the spacing of the longitudinal reinforcement bars in the web.
[0011] Preferably, the web stirrups are further welded with several sets of bottom web reinforcement bars, which are located at the bottom of the web stirrups.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model is provided with several sets of top plate transverse reinforcement bars and web plate stirrups. Two sets of top plate longitudinal reinforcement bars are respectively provided above the interior of the top plate transverse reinforcement bars, and two other sets of top plate longitudinal reinforcement bars are respectively provided below the interior of the top plate transverse reinforcement bars. The top plate longitudinal reinforcement bars pass through each set of top plate transverse reinforcement bars. The top plate longitudinal reinforcement bars and the top plate transverse reinforcement bars together form the top plate transverse part. Several sets of web plate longitudinal reinforcement bars are provided on both sides of the interior of the web plate stirrups. The web plate stirrups and the web plate longitudinal reinforcement bars together form the web plate longitudinal part. The top plate transverse part and the web plate longitudinal part are combined to form a T-beam reinforcement skeleton. By bending and recombining, the top plate transverse part and the web plate longitudinal part can be processed separately and then combined, which is more suitable for mechanized production.
[0014] 2. In this utility model, the ends of the longitudinal reinforcement bars of the web plate are formed with continuous bends, and several groups of longitudinal reinforcement bars of the web plate are arranged symmetrically on the surface of the web plate stirrups. After the web plate stirrups are bent, the longitudinal reinforcement bars of the web plate can combine with the web plate stirrups to form a variable cross-section rectangular channel with a gradually increasing cross-section. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the transverse portion of the top plate of this utility model;
[0016] Figure 2 This is a schematic diagram of the longitudinal section of the web of this utility model in its unfolded state;
[0017] Figure 3 This is a schematic diagram of the longitudinal bending state of the web of this utility model.
[0018] Figure 4This is a front view schematic diagram of the combined state of the transverse part of the top plate and the longitudinal part of the web of this utility model.
[0019] The numbers in the diagram represent:
[0020] 1. Transverse reinforcement of top slab; 2. Longitudinal reinforcement of top slab; 3. Stirrups of web slab; 4. Longitudinal reinforcement of web slab; 5. Bottom reinforcement of web slab; 6. Cross reinforcement of top slab and web slab. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, highlighting the above and other technical features and advantages of the present invention. However, the following embodiments are merely preferred embodiments of the present invention and are not exhaustive.
[0022] Example:
[0023] like Figure 1 - Figure 4 As shown, this utility model provides a variable cross-section T-beam reinforcement skeleton, including several sets of top plate transverse reinforcement 1, which are arranged longitudinally at certain intervals. Three sets of top plate longitudinal reinforcement 2 are respectively arranged above the interior of the top plate transverse reinforcement 1, and another three sets of top plate longitudinal reinforcement 2 are respectively arranged below the interior of the top plate transverse reinforcement 1. The top plate longitudinal reinforcement 2 passes through each set of top plate transverse reinforcement 1. The top plate longitudinal reinforcement 2, together with the top plate transverse reinforcement 1, forms the transverse part of the top plate. Several sets of web stirrups 3 are provided, with the number of top plate transverse reinforcement 1 and web stirrups 3 being consistent. One set of top plate transverse reinforcement 1 and one set of web stirrups 3 constitute a corresponding set. The top plate transverse reinforcement 1 and web stirrups 3 within a corresponding set are closely fitted together. Several sets of web stirrups 3, together with the top plate transverse reinforcement 1, are arranged longitudinally at certain intervals. Several sets of web longitudinal reinforcement 4 are provided on both sides inside the web stirrups 3. The web stirrups 3, together with the web longitudinal reinforcement 4, form the longitudinal part of the web. The top plate transverse part and the web longitudinal part combine to form the T-beam reinforcement skeleton.
[0024] Several sets of cross reinforcing bars 6 are inserted in the fixed area. The cross reinforcing bars 6 are located at the intersection of the transverse reinforcing bars 1 and the stirrups 3 of the web. The cross reinforcing bars 6 are simultaneously connected to the transverse reinforcing bars 1 and the stirrups 3 of the web by welding. Under the action of the cross reinforcing bars 6, the positions of the transverse reinforcing bars 1 and the stirrups 3 of the web remain fixed, forming a complete T-beam reinforcement skeleton.
[0025] The bottom end of the transverse reinforcement 1 in the top slab is located inside the stirrups 3 in the web. A set of cross reinforcement 6 in the web of the top slab is connected between the bottom ends of several sets of transverse reinforcement 1 in the top slab. The cross reinforcement 6 in the web of the top slab is connected to each set of transverse reinforcement 1 in the top slab by welding. The ends of several sets of transverse reinforcement 1 in the top slab are kept fixed under the constraint of the cross reinforcement 6 in the web of the top slab, so as to avoid rigid deflection between the bottoms of each set of transverse reinforcement 1 in the top slab, and improve the stability and strength of the overall structure.
[0026] The ends of the longitudinal reinforcement bars 4 in the web are formed with continuous bends. Several groups of longitudinal reinforcement bars 4 are arranged symmetrically on the surface of the web stirrups 3. The length of the web stirrups 3 at the continuous bends at the ends of the longitudinal reinforcement bars 4 increases synchronously with the increase of the opening width of the continuous bends at the ends of the longitudinal reinforcement bars 4. The length of the web stirrups 3 at the straight part in the middle of the longitudinal reinforcement bars 4 is consistent with the spacing of the longitudinal reinforcement bars 4. During the bending process of the web stirrups 3, the web stirrups 3 at different positions of the longitudinal reinforcement bars 4 are folded to different degrees according to the specifications of the longitudinal reinforcement bars 4. The folding process is carried out in segments and synchronously. After the web stirrups 3 are completely bent, the web stirrups 3 and the longitudinal reinforcement bars 4 form a variable cross-section rectangular channel with a gradually increasing cross-section.
[0027] Preferably, several sets of bottom web reinforcement bars 5 are welded inside the web stirrups 3. The bottom web reinforcement bars 5 are set at the bottom inside the web stirrups 3. The bottom web reinforcement bars 5 connect and reinforce the bottom of the several sets of web stirrups 3 to prevent the bottom of the web stirrups 3 from shaking, and further enhance the structural strength of the longitudinal part of the web formed by the combination of the web stirrups 3 and the longitudinal web reinforcement bars 4.
[0028] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.
Claims
1. A variable cross-section T-beam reinforcement cage, characterized in that, It includes several sets of transverse top slab reinforcement and web stirrups. The transverse top slab reinforcement is arranged longitudinally at a certain interval. Two sets of longitudinal top slab reinforcement are set above the transverse top slab reinforcement, and two other sets of longitudinal top slab reinforcement are set below the transverse top slab reinforcement. The longitudinal top slab reinforcement passes through each set of transverse top slab reinforcement. The longitudinal top slab reinforcement and the transverse top slab reinforcement together form the transverse top slab part. Several sets of web stirrups are set. The web stirrups and the transverse top slab reinforcement are arranged longitudinally at a certain interval. Several sets of longitudinal web reinforcement are set on both sides inside the web stirrups. The web stirrups and the longitudinal web reinforcement together form the longitudinal web part. The transverse top slab part and the longitudinal web part combine to form the T-beam reinforcement skeleton.
2. The variable cross-section T-beam reinforcement cage as described in claim 1, characterized in that, The number of transverse reinforcement bars in the top slab and the number of stirrups in the web are consistent. A set of transverse reinforcement bars in the top slab and a set of stirrups in the web constitute a corresponding group. The transverse reinforcement bars in the top slab and the stirrups in the web are closely fitted to each other within a corresponding group.
3. The variable cross-section T-beam reinforcement cage as described in claim 2, characterized in that, The overlapping portion of the top slab transverse reinforcement and the web stirrups is a combined fixing area. Several sets of top slab and web cross reinforcements are inserted within the fixing area. The top slab and web cross reinforcements are located at the intersection of the top slab transverse reinforcement and the web stirrups.
4. The variable cross-section T-beam reinforcement cage as described in claim 3, characterized in that, The bottom end of the transverse reinforcement of the top slab is located inside the stirrups of the web, and a set of cross reinforcement bars of the top slab web are connected between the bottom ends of several sets of transverse reinforcement of the top slab.
5. The variable cross-section T-beam reinforcement cage as described in claim 1, characterized in that, The ends of the longitudinal reinforcement bars in the web are formed with continuous bends, and several groups of longitudinal reinforcement bars in the web are arranged symmetrically on the surface of the web stirrups.
6. The variable cross-section T-beam reinforcement cage as described in claim 5, characterized in that, The length of the web stirrups placed at the continuous bends at the ends of the longitudinal reinforcement bars in the web increases synchronously with the increase of the opening width of the continuous bends at the ends of the longitudinal reinforcement bars in the web. The length of the web stirrups placed at the straight part in the middle of the longitudinal reinforcement bars in the web is consistent with the spacing of the longitudinal reinforcement bars in the web.
7. The variable cross-section T-beam reinforcement cage as described in claim 6, characterized in that, The web stirrups are further welded with several sets of bottom web reinforcement bars, which are located at the bottom inside the web stirrups.