Hanging type composite floor slab structure
By hanging the prefabricated tendons in the pouring area of the beam body by hanging the floor structure of the hanging floor. The problem of low efficiency achieves the effect of simplifying the installation process and improving construction efficiency.
Patent Information
- Application Number
- CN202420744591.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The construction process of the existing reinforced concrete structure is complicated, and the quality control of on-site construction is difficult, resulting in poor apparent quality. The installation method of prefabricated overlapping floor slabs is cumbersome, which can easily disrupt the binding of steel bars on the beam body and reduce construction efficiency.
It adopts a suspended composite floor structure, in which the reinforcement of the prefabricated layer is located inside the area surrounded by the beam pouring area, and the steel mesh of the cast-in-place layer extends into the beam pouring area and is integrated with the beam pouring, which simplifies the installation process. This avoids the bending of the reserved steel bars and the lifting and lowering of the beam steel cage.
The construction process has been reduced, the construction efficiency is improved, and the rework of the steel bars of the beam body is avoided, and the stability of the construction quality is ensured.
Smart Images
Figure CN222390751U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of building floors, in particular to a hanging type composite floor structure. Background Art
[0002] In the field of modern construction, civil buildings are mostly multi-story masonry structures, reinforced concrete frame (frame-shear wall) structures, and light steel structures. Reinforced concrete structures have the advantages of high structural strength, good seismic performance, and rich architectural shapes. However, they also have problems such as complex construction procedures, difficulty in on-site construction quality control, and poor apparent quality. In order to solve the above problems of reinforced concrete structures, the construction industry has promoted prefabricated assembled structures. The load-bearing main body of this type of building structure still uses cast-in-place reinforced concrete structures, and the non-load-bearing main body of the floor slabs, infill walls, etc. use prefabricated composite floor slabs and prefabricated wall panels that are prefabricated in the factory and installed on site. This structure reduces the amount of cast-in-place concrete engineering, is beneficial to environmental protection and improves production efficiency. However, the plate reinforcement of the prefabricated composite floor of this structure is generally provided with reserved reinforcement anchored in the surrounding beams. In order to facilitate on-site installation, the factory bends the reserved reinforcement of the prefabricated layer of the composite floor slab upward by 90 degrees. After the prefabricated layer of the composite floor slab is hoisted in place, the workers use a crowbar to lift the beam reinforcement cage that has been tied around, and then pry the reserved reinforcement of the prefabricated layer of the composite floor slab downward to a horizontal level, and then put down the beam reinforcement cage to complete the installation of the prefabricated layer of the composite floor slab. This installation method is very cumbersome and will disrupt the already tied beam reinforcement, causing the beam reinforcement binding to be reworked, reducing construction efficiency. In addition, the post-casting strips at the joints of the prefabricated composite floor slabs are prone to leakage, resulting in the need to grind the bottom of the composite floor slab, wasting a lot of manpower and material resources. Utility Model Content
[0003] The utility model aims to provide a hanging type composite floor structure, which can reduce the construction process and improve the construction efficiency.
[0004] The technical solution adopted by the utility model is: a suspended composite floor structure, including a composite floor and a beam casting area around the composite floor, the composite floor includes a lower prefabricated layer and an upper cast-in-place layer, the reinforcement of the prefabricated layer is located inside the surrounding area of the beam casting area; the outer periphery of the cast-in-place steel mesh of the cast-in-place layer extends into the beam casting area.
[0005] Furthermore, the prefabricated layer includes a number of flatly arranged prefabricated composite panels, and a post-cast strip is formed between two adjacent prefabricated composite panels. Among the two adjacent prefabricated composite panels, one is prefabricated composite panel one, and the other is prefabricated composite panel two; a leak-proof plate is provided in the post-cast strip; a fixing rib is provided on one side of the top surface of the leak-proof panel, and a water stop strip running through the longitudinal direction is provided on the other side; the fixing rib is buried in the prefabricated composite panel one; a groove running through the post-cast strip in the extension direction is provided at the bottom of the prefabricated composite panel two, and the water stop strip is inserted into the groove.
[0006] Furthermore, the fixing ribs are arranged at intervals along the extension direction of the post-cast strip.
[0007] Furthermore, the reinforcement of the prefabricated composite slab includes a prefabricated steel mesh and an outer frame surrounding the outer circumference of the prefabricated steel mesh, and the prefabricated steel mesh is welded to the outer frame.
[0008] Furthermore, a lifting ring is fixed on the prefabricated steel mesh; and a hanging piece is fixed on the outer frame.
[0009] Furthermore, the hanging member is Z-shaped, including an upper horizontal section, a lower horizontal section and a vertical section, and the outer frame is located on the lower horizontal section and welded to the lower horizontal section.
[0010] Furthermore, the outer frame is in the shape of a rectangle surrounded by angle steels, and a reinforcing angle steel is arranged inside the rectangular outer frame to increase the overall rigidity of the outer frame.
[0011] The beneficial effects of the utility model are as follows: in the utility model, the reinforcement of the prefabricated layer is located inside the surrounding area of the beam casting area, that is, the reinforcement of the prefabricated layer does not extend into the beam casting area, and a structure is adopted in which the outer periphery of the cast-in-place steel mesh of the cast-in-place layer extends into the beam casting area and is cast into one piece with the beam. Precisely because the reinforcement of the prefabricated layer does not extend into the beam casting area, there is no need to bend the reserved steel bars downward 90 degrees on site, nor is there any need to lift and lower the beam steel cage, which saves installation procedures; furthermore, since the lifting and lowering of the beam steel cage is avoided, the phenomenon of disturbing the beam steel bars is avoided, and the problem of rework of beam steel binding is avoided, which is conducive to improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the structure of the utility model;
[0013] Figure 2 This is a cross-sectional view of the utility model;
[0014] Figure 3 This is a schematic diagram of the installation of the prefabricated layer of the utility model;
[0015] Figure 4 This is the reinforcement diagram of prefabricated composite slab 1;
[0016] Figure 5 This is a schematic diagram of reinforcement for the precast layer;
[0017] Figure 6 Schematic diagram of the leak-proof plate.
[0018] In the figure, there are composite floor 1, beam casting area 2, precast layer 11, precast composite plate 1 11A, precast composite plate 2 11B, post-cast strip 11C, leak-proof plate 11D, fixing ribs 11E, water stop strip 11F, precast steel mesh 111, outer frame 112, lifting ring 113, hanging parts 114, cast-in-place layer 12, cast-in-place steel mesh 12A, and beam formwork 3. DETAILED DESCRIPTION
[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments:
[0020] In the present invention, the terms "longitudinal", "vertical", "upper", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or position relationship shown is only for the convenience of describing the present invention, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0021] Suspended composite floor structure, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a composite floor 1 and a beam casting area 2 around the composite floor 1, the composite floor 1 includes a lower prefabricated layer 11 and an upper cast-in-place layer 12, the reinforcement of the prefabricated layer 11 is located inside the enclosed area of the beam casting area 2; the outer periphery of the cast-in-place steel mesh 12A of the cast-in-place layer 12 extends into the beam casting area 2.
[0022] The prefabricated layer 11 is composed of prefabricated composite panels prefabricated in a factory, and is the lower layer of the composite floor 1. The cast-in-place layer 12 is a structure cast on site with the prefabricated layer 11 as the bottom mold. The beam casting area 2 around the composite floor 1 is used to cast the beam in situ. During casting, the cast-in-place layer 12 is cast at the same time as the beam, so that the cast-in-place beam, the prefabricated layer 11 and the cast-in-place layer 12 together constitute a suspended composite floor structure.
[0023] In the traditional structure, the reinforcement of the prefabricated layer 11 has reserved steel bars, which need to be extended into the beam casting area 2 and cast into one piece with the beam. In order to facilitate on-site installation, the factory bends the reserved steel bars of the prefabricated layer 11 upward by 90 degrees. After the prefabricated layer 11 is hoisted in place, the workers use a crowbar to lift the beam reinforcement cage that has been tied around it, and then pry the reserved steel bars of the prefabricated layer 11 down to a horizontal level, and then put down the beam reinforcement cage. This installation method is very cumbersome and will disrupt the already tied beam reinforcement, causing the beam reinforcement to be reworked, reducing construction efficiency.
[0024] In this embodiment, the reinforcement of the prefabricated layer 11 is located inside the enclosed area of the beam casting area 2, which means that the reinforcement of the prefabricated layer 11 does not extend into the beam casting area 2, that is, the prefabricated layer 11 is not provided with reserved steel bars. It adopts a structure in which the outer periphery of the cast-in-place steel mesh 12A of the cast-in-place layer 12 extends into the beam casting area 2 and is cast into one piece with the beam. In this arrangement, since the reinforcement of the prefabricated layer 11 does not extend into the beam casting area 2, there is no need to bend the reserved steel bars upward 90 degrees or pry them flat, and there is no need to lift and lower the beam steel cage, which saves installation procedures; furthermore, it avoids lifting and lowering the beam steel cage, thereby avoiding the phenomenon of disturbing the beam steel bars, avoiding the problem of rework of beam steel binding, and helping to improve construction efficiency.
[0025] The prefabricated layer 11 includes a plurality of prefabricated laminated panels arranged in a flat pattern, such as Figure 4 and Figure 5 As shown, a post-cast strip 11C is formed between two adjacent prefabricated composite panels. Of the two adjacent prefabricated composite panels, one is prefabricated composite panel 11A and the other is prefabricated composite panel 2 11B. If the post-cast strip 11C leaks seriously at the bottom, it needs to be polished manually, which increases labor costs and delays the construction period. In order to alleviate the problem of leakage at the bottom of the post-cast strip 11C, in this embodiment, a leak-proof plate 11D is provided at the post-cast strip 11C. Figure 6 As shown, a fixing rib 11E is provided on one side of the top surface of the leakproof plate 11D, and a water stop strip 11F is provided on the other side thereof, which runs through in the longitudinal direction; the fixing rib 11E is embedded in the precast composite plate 11A; a groove which runs through in the extension direction of the post-casting strip is provided at the bottom of the precast composite plate 11B, and the water stop strip 11F is inserted into the groove. The fixing rib 11E of the leakproof plate 11D is embedded in the precast composite plate 11A, that is, when the precast composite plate 11A is precast and poured in the factory, the fixing rib 11E of the leakproof plate 11D is cast as a whole with the precast composite plate 11A, and the bottom surface of the leakproof plate 11D is flush with the bottom surface of the precast composite plate 11A, so that there is no leakage gap between the leakproof plate 11D and the precast composite plate 11A. The groove at the bottom of the precast composite plate 11B is formed when the precast layer concrete is poured. The water stop strip 11F is matched with the groove. When the water stop strip 11F is inserted into the groove, the gap between the leak-proof plate 11D and the second prefabricated composite plate 11B is blocked by the water stop strip 11F, and there is no gap for leakage. Thus, the leak-proof plate 11D alleviates the leakage problem of the lower part of the post-casting belt 11C, and the leak-proof structure is simple.
[0026] The fixing ribs 11E can be set throughout the entire length like the water stop strips 11F. However, since the fixing ribs 11E are mainly used to be buried in the prefabricated composite slab 11A, setting them throughout the entire length will waste materials. To avoid this problem, preferably, the fixing ribs 11E are arranged at intervals along the extension direction of the post-cast strip.
[0027] In order to ensure the strength and rigidity of the prefabricated composite slab, the reinforcement of the prefabricated composite slab includes a prefabricated steel mesh 111 and an outer frame 112 surrounding the outer circumference of the prefabricated steel mesh 111 , and the prefabricated steel mesh 111 and the outer frame 112 are welded.
[0028] In order to facilitate the hoisting of the prefabricated composite plate, a hoisting ring 113 is fixed on the prefabricated steel mesh 111. In order to hang the prefabricated composite plate on the surrounding beams, a hanging member 114 is fixed on the outer frame 112.
[0029] The hanging member 114 is Z-shaped, including an upper horizontal section, a lower horizontal section and a vertical section, and the outer frame 112 is located in the lower horizontal section and welded to the lower horizontal section.
[0030] The outer frame 112 is in a rectangular shape surrounded by angle steel. The angle steel is light and strong, and the outer frame 112 formed by the angle steel can provide good support for the prefabricated steel mesh 111. Reinforced angle steel is arranged inside the rectangular outer frame to increase the overall rigidity of the outer frame 112.
[0031] The construction process of the suspended composite floor structure is as follows:
[0032] Step 1: Prefabricated layer 11 production
[0033] 1) The prefabricated steel mesh 111 and the outer frame 112 are manufactured and processed in a factory. The angle steels are welded to form an integral outer frame 112. The prefabricated steel mesh 111 and the reinforcement are welded to each other.
[0034] 2) Weld the hanger 114 to the outer frame 112. The truss reinforcement provided in the traditional prefabricated layer of the composite floor is eliminated. The steel mesh of the prefabricated layer of the composite floor does not extend into the surrounding beams.
[0035] 3) The prefabricated composite board 11A and the prefabricated composite board 2 11B are a unit. A leakproof plate 11D is buried at the bottom of the prefabricated composite board 11A, and a groove for embedding a water stop strip 11F is provided at the bottom of the prefabricated composite board 2 11B. The water stop strip 11F is fixed on the leakproof plate 11D.
[0036] 4) Pour concrete of precast composite slabs and carry out maintenance.
[0037] Step 2: Set up the full-floor support frame at the installation location of the composite floor.
[0038] Step 3: Install beam and slab bottom formwork on the full-floor support frame.
[0039] Step 4: Tie up the steel cage around the beam.
[0040] Step 5: Lifting and installing prefabricated composite panel 1 11A and prefabricated composite panel 2 11B.
[0041] Step 6: Install and adjust the leak-proof plate 11D at the back pouring joint.
[0042] Step 7: Lay out wire pipes, embedded parts, etc. on the cast-in-place layer 12 of the composite floor slab.
[0043] Step 8: Tie up the cast-in-place steel mesh 12A of the cast-in-place layer 12 of the composite floor slab, and anchor the cast-in-place steel mesh 12A into the beam body.
[0044] Step 9: Pour the cast-in-place layer 12 concrete of the composite floor slab.
Claims
1. A suspended composite floor structure, comprising a composite floor (1) and a beam casting area (2) around the composite floor (1), wherein the composite floor (1) comprises a lower prefabricated layer (11) and an upper cast-in-place layer (12), characterized in that: The reinforcement of the prefabricated layer (11) is located inside the area surrounded by the beam casting area (2); the outer periphery of the cast-in-place steel mesh (12A) of the cast-in-place layer (12) extends into the beam casting area (2).
2. The suspended composite floor structure according to claim 1, characterized in that: The prefabricated layer (11) comprises a plurality of prefabricated composite panels arranged in a flat pattern, a post-cast strip (11C) is formed between two adjacent prefabricated composite panels, one of the two adjacent prefabricated composite panels is a prefabricated composite panel 1 (11A), and the other is a prefabricated composite panel 2 (11B); a leak-proof plate (11D) is arranged on the post-cast strip (11C); a fixing rib (11E) is arranged on one side of the top surface of the leak-proof panel (11D), and a water stop strip (11F) is arranged on the other side thereof and runs through in the longitudinal direction; the fixing rib (11E) is buried in the prefabricated composite panel 1 (11A); a groove is arranged at the bottom of the prefabricated composite panel 2 (11B) and runs through in the extension direction of the post-cast strip, and the water stop strip (11F) is inserted into the groove.
3. The suspended composite floor structure according to claim 2, characterized in that: The fixing ribs (11E) are arranged at intervals along the extending direction of the post-cast strip.
4. The suspended composite floor structure according to claim 2, characterized in that: The reinforcement of the prefabricated composite plate comprises a prefabricated steel mesh (111) and an outer frame (112) surrounding the outer periphery of the prefabricated steel mesh (111), and the prefabricated steel mesh (111) and the outer frame (112) are welded.
5. The suspended composite floor structure according to claim 4, characterized in that: A lifting ring (113) is fixed on the prefabricated steel mesh (111); and a hanging member (114) is fixed on the outer frame (112).
6. The suspended composite floor structure according to claim 5, characterized in that: The hanging member (114) is Z-shaped, comprising an upper horizontal section, a lower horizontal section and a vertical section, and the outer frame (112) is located on the lower horizontal section and welded to the lower horizontal section.
7. The suspended composite floor structure according to claim 4, characterized in that: The outer frame (112) is in the shape of a rectangle surrounded by angle steels, and a reinforcing angle steel is arranged inside the rectangular outer frame to increase the overall rigidity of the outer frame (112).