Laminated slab connecting node in slab descending area
A novel connection node design for precast concrete elements addresses the challenges of precise bending and handling in the drop zone by optimizing steel reinforcement configurations, enhancing construction efficiency and stability.
Patent Information
- Application Number
- CN202422326760.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-24
AI Technical Summary
At the connecting nodes of the lower plate area of the stacked plate, it is difficult for the prior art to effectively deal with the bending and connection of steel bars, resulting in poor component molding quality and inconvenient storage and transportation.
The top and bottom ribs of the high and low-level overlapping plates are designed, combined with additional welded steel bars to form a specific bend and welded structure, optimize the length and number of bends to ensure stable connection after forming in the processing plant.
The length and number of bends of steel bars are reduced, the convenience of storage and transportation of components is improved, and the stability and forming quality of nodes are enhanced.
Smart Images
Figure CN223103874U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of building construction, and particularly relates to a connecting node of a composite slab in a dropped slab area. Background Technique
[0002] An assembled building refers to a building in which a large amount of on-site operation work in the traditional construction method is transferred to a factory. Building components and fittings (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory and transported to the building construction site, and then assembled and installed on-site through reliable connection methods. The types of components mainly include exterior wall panels, interior wall panels, composite slabs, balconies, air-conditioning panels, stairs, precast beams, precast columns, etc.
[0003] During the application process of the composite slab, it is generally necessary to carry out detailed design according to the on-site situation, then make molds in the processing factory and process the components, and finally transport and install them on-site. During the on-site construction process, the connection method of the composite slab nodes in the dropped slab area brings many difficulties to the detailed design, processing, storage, process transportation, and on-site installation of the composite slab. As Figure 1 shown: The on-site structural design is that the elevation of the bathroom is lower than that of other rooms, which is a dropped slab area. The dropped slab area is designed with composite slabs, and the composite slabs are connected by cast-in-place concrete without beam members. According to the conventional detailed design method, the top reinforcement and bottom reinforcement of the two side composite slabs need to be intersected and lapped with each other to ensure the overall connection is firm. In the bending area, how to divide and process the steel bar nodes is the key problem. If considering the convenience of composite slab processing and transportation, the steel bars in the bending area can be straightened, and then manually bent during on-site installation. However, from the actual on-site situation, it is very difficult to achieve a 90° bending effect, which directly affects the forming quality of the component. If the steel bars are bent at 90° into a Z shape in the processing factory, the end steel bars of the component will bend down or up, and the length of the steel bar heads is relatively long, which will bring inconvenience to the storage and transportation of the component. Content of the Utility Model
[0004] The purpose of the utility model is to provide a connecting node of a composite slab in a dropped slab area.
[0005] The utility model is realized by the following measures: A connecting node of a composite slab in a dropped slab area, characterized in that it includes the top reinforcement one and bottom reinforcement one of the high composite slab, the top reinforcement two and bottom reinforcement two of the low composite slab, and additional welded steel bars connected to the top reinforcement one;
[0006] The top reinforcement one includes a long horizontal section, a vertical section bent downward from the end of the long horizontal section into the wall or beam, and a short horizontal section bent upward from the bottom end of the vertical section;
[0007] The bottom reinforcement one includes a horizontal section and a vertical section bent downward from the end of the horizontal section into the wall or beam;
[0008] The second top reinforcement bar includes a horizontal section and a vertical section that extends from the end of the horizontal section into the wall or beam and bends upward.
[0009] The second bottom reinforcement bar includes a horizontal section and a vertical section that extends from the end of the horizontal section into the wall or beam and bends upward.
[0010] The additional welded reinforcement bar includes a long horizontal section, a vertical section that extends from the end of the long horizontal section into the wall or beam and bends downward, and a short horizontal section that bends downward from the bottom end of the vertical section.
[0011] The short horizontal section of the additional welded reinforcement bar overlaps and is welded and fixed to the short horizontal section of the first top reinforcement bar.
[0012] A hook facing downward is provided at the end of the short horizontal section of the first top reinforcement bar.
[0013] A hook facing upward is provided at the end of the short horizontal section of the additional welded reinforcement bar.
[0014] The first top reinforcement bar, the first bottom reinforcement bar, the second top reinforcement bar, the second bottom reinforcement bar, and the additional welded reinforcement bar are respectively tied and fixed to the main reinforcement bars of the wall or beam.
[0015] The welding length between the additional welded reinforcement bar and the first top reinforcement bar is not less than 100 mm.
[0016] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model are as follows: The first top reinforcement bar is optimized from bending downward at the original outermost end and then penetrating into the cast-in-place reinforced concrete layer of the lower composite slab to not bending downward and penetrating into the cast-in-place reinforced concrete layer, reducing the length of the reinforcement bar and performing hook treatment.
[0017] The first bottom reinforcement bar is optimized from bending downward at the original outermost end and then penetrating into the cast-in-place reinforced concrete layer of the lower composite slab to not bending downward and penetrating into the cast-in-place reinforced concrete layer, reducing the length of the reinforcement bar and the number of bends.
[0018] The second top reinforcement bar is optimized from bending upward at the original outermost end and then penetrating into the cast-in-place reinforced concrete layer of the composite slab to eliminating the upward bend.
[0019] The second bottom reinforcement bar is optimized from bending upward at the original outermost end and then penetrating into the cast-in-place reinforced concrete layer of the composite slab to eliminating the upward bend.
[0020] Compared with the prior art, the reserved reinforcement bar heads on both sides of the composite slabs are shorter, the number of bends is less, and it can be processed into a finished product at one time in the processing factory, which is also more convenient during storage and transportation. The additional welded reinforcement bar plays a role in strengthening the connection between the composite slabs, making the structural joints more stable. Description of the Drawings
[0021] To more clearly illustrate the technical solution of the present utility model, the attached drawings used in the embodiments will be briefly introduced below. Obviously, the attached drawings listed below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other attached drawings can be obtained based on these attached drawings.
[0022] Figure 1 is a schematic structural diagram of the prior art in the background art;
[0023] Figure 2 is a schematic structural diagram of the component of the composite slab connection node in the drop - slab area in the embodiment of the present utility model;
[0024] Figure 3 is a reference diagram of the use state of the composite slab connection node in the drop - slab area in the embodiment of the present utility model;
[0025] Figure 4 is a reference diagram of the use state of the composite slab connection node in the drop - slab area in the embodiment of the present utility model (the color is only for convenient recognition of the drawing).
[0026] In the attached drawings, the list of components represented by each label is as follows: 1. First top reinforcement; 2. First bottom reinforcement; 3. Second top reinforcement; 4. Second bottom reinforcement; 5. Additional welded reinforcement; 6. High - level precast floor slab; 7. Low - level precast floor slab. Detailed implementation manners
[0027] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present utility model and are not used to limit the present utility model.
[0028] See Figures 1 - 4 and see Figures 1 - 4 , a composite slab connection node in a drop - slab area, characterized in that it includes the first top reinforcement 1 and the first bottom reinforcement 2 of the high - level composite slab, the second top reinforcement 3 and the second bottom reinforcement 4 of the low - level composite slab, and the additional welded reinforcement 5 connected to the first top reinforcement 1;
[0029] The first top reinforcement 1 includes a long horizontal section, a vertical section bent downward from the end of the long horizontal section into the wall or beam, and a short horizontal section bent upward from the bottom end of the vertical section;
[0030] The first bottom reinforcement 2 includes a horizontal section and a vertical section bent downward from the end of the horizontal section into the wall or beam;
[0031] The second top reinforcement 3 includes a horizontal section and a vertical section bent upward from the end of the horizontal section into the wall or beam;
[0032] The bottom reinforcement two 4 includes a horizontal section and a vertical section that bends upward from the end of the horizontal section and extends into the wall or beam.
[0033] The additional welded reinforcement 5 includes a long horizontal section, a vertical section that bends downward from the end of the long horizontal section and extends into the wall or beam, and a short horizontal section that bends downward from the bottom end of the vertical section.
[0034] The short horizontal section of the additional welded reinforcement 5 overlaps and is welded and fixed with the short horizontal section of the top reinforcement one 1. The composite slab generally includes a precast bottom slab and a cast-in-place reinforced concrete layer, where Figure 3 it includes a high precast bottom slab 6 and a high precast bottom slab 7, and the cast-in-place reinforced concrete layer has not been poured yet.
[0035] A hook facing downward is provided at the end of the short horizontal section of the top reinforcement one 1.
[0036] A hook facing upward is provided at the end of the short horizontal section of the additional welded reinforcement 5.
[0037] The top reinforcement one 1, the bottom reinforcement one 2, the top reinforcement two 3, the bottom reinforcement two 4, and the additional welded reinforcement 5 are respectively tied and fixed to the main reinforcement of the wall or beam.
[0038] The welding length between the additional welded reinforcement 5 and the top reinforcement one 1 is not less than 100 mm.
[0039] The beneficial effects brought by the technical solution provided by the embodiment of the present utility model are as follows: The top reinforcement one 1 is optimized from bending downward at the original end and then penetrating into the cast-in-place reinforced concrete layer of the low composite slab to not bending downward and penetrating into the cast-in-place reinforced concrete layer, reducing the length of the reinforcement and performing a hook treatment;
[0040] The bottom reinforcement one 2 is optimized from bending downward at the original end and then penetrating into the cast-in-place reinforced concrete layer of the low composite slab to not bending downward and penetrating into the cast-in-place reinforced concrete layer, reducing the length of the reinforcement and the number of bends;
[0041] The top reinforcement two 3 is optimized from bending upward at the original end and then penetrating into the cast-in-place reinforced concrete layer of the composite slab to eliminating the high bending;
[0042] The bottom reinforcement two 4 is optimized from bending upward at the original end and then penetrating into the cast-in-place reinforced concrete layer of the composite slab to eliminating the high bending.
[0043] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A connection node of a composite slab in a dropped slab area, characterized in that, It includes the top reinforcement bar 1 and bottom reinforcement bar 1 of the high-positioned laminated slab, the top reinforcement bar 2 and bottom reinforcement bar 2 of the low-positioned laminated slab, and the additional welded reinforcement bar connected to the top reinforcement bar 1; The top reinforcement bar 1 includes a long horizontal section, a vertical section that extends from the end of the long horizontal section into the wall or beam and bends downward to the low position, and a short horizontal section that bends upward from the bottom end of the vertical section; The bottom reinforcement bar 1 includes a horizontal section and a vertical section that extends from the end of the horizontal section into the wall or beam and bends downward to the low position; The top reinforcement bar 2 includes a horizontal section and a vertical section that extends from the end of the horizontal section into the wall or beam and bends upward to the high position; The bottom reinforcement bar 2 includes a horizontal section and a vertical section that extends from the end of the horizontal section into the wall or beam and bends upward to the high position; The additional welded reinforcement bar includes a long horizontal section, a vertical section that extends from the end of the long horizontal section into the wall or beam and bends downward to the low position, and a short horizontal section that bends downward from the bottom end of the vertical section; The short horizontal section of the additional welded reinforcement bar overlaps and is welded and fixed with the short horizontal section of the top reinforcement bar 1.
2. The connection node of the superimposed slab in the depressed slab area according to claim 1, wherein A hook facing the low position is provided at the end of the short horizontal section of the top reinforcement bar 1.
3. The composite slab connection node in the depressed slab area according to claim 1, wherein, A hook facing the high position is provided at the end of the short horizontal section of the additional welded reinforcement bar.
4. The composite slab connection node in the sunken slab area according to claim 1, characterized in that, The top reinforcement bar 1, bottom reinforcement bar 1, top reinforcement bar 2, bottom reinforcement bar 2, and additional welded reinforcement bar are respectively tied and fixed to the main reinforcement bars of the wall or beam.
5. The composite slab connection node in the depressed slab area according to claim 1, characterized in that, The welding length of the additional welded reinforcement bar and the top reinforcement bar 1 is not less than 100 mm.