Fabricated multi-ribbed floor system template

Abstract

The utility model is applicable to the technical field of assembly type buildings, and provides an assembly type dense rib floor system formwork which comprises a plurality of transverse installation bridges arranged at intervals, each transverse installation bridge comprises a floor bearing plate, the floor bearing plates are detachably connected with transverse trusses, and a plurality of hollow formwork shells are arranged between the adjacent floor bearing plates. The left side and the right side of the floor bearing plate bear the shell side edge of the hollow formwork through the formwork supporting edge so that supporting of the hollow formwork can be achieved, and the transversely-installed bridge frame is assembled in a factory in advance. The hollow formworks are laid between the bridge frames and between the bridge frames on the two sides and the main beam, the structure and the construction mode meet the assembly type floor slab construction requirement, the field workload of constructors is reduced, meanwhile, the construction cost is reduced, meanwhile, the transportation cost is low, and compared with a traditional assembly type building, the cost is greatly reduced; and the structure is more reasonable, and the firmness is higher.

Description

Technical Field

[0001] The utility model is applicable to the technical field of prefabricated buildings, and provides a prefabricated ribbed floor slab formwork. Background Technique

[0002] In the construction field, a one-way or two-way ribbed floor slab with a rib spacing less than 1.5 meters is generally called a ribbed floor slab. This floor slab system is applicable to multi-story and high-rise buildings with large spans and loads and large spaces. Compared with the traditional flat floor slab, due to its ribbed structure, the amount of concrete in the floor slab is reduced, and the self-weight of the floor slab is greatly reduced. As a result, the loads on the beams, columns, walls, and foundations of the building supporting the floor slab are also correspondingly reduced. In this way, the cross-sections of the components can be reduced, the steel reinforcement can be reduced, and the concrete and steel can be saved, thereby achieving the purpose of reducing the cost. At the same time, the ribbed floor slab also has the advantages of large stiffness, small deformation, and good seismic performance. However, the traditional ribbed floor slab is generally used in non-prefabricated buildings, and its construction process is carried out entirely on the construction site. Usually, a full hall scaffold is first built below the construction surface as the basic support, and then the installation of the support → the installation of the main and secondary wooden ribs → the adjustment of the bottom elevation and camber of the ribbed beam → the installation of the formwork shell are experienced. Finally, the concrete pouring is carried out to complete the construction of the ribbed floor slab. This method belongs to the typical non-prefabricated building construction process. At present, China has started to vigorously promote prefabricated buildings. A prefabricated building refers to a building in which a large number of on-site operation works in the traditional construction method are transferred to the factory. The building components and fittings (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory and transported to the construction site of the building, and are assembled and installed on-site through reliable connection methods. In some regions, the assembly rate of the building is proposed as an important indicator for building design approval. Therefore, the current construction industry is transforming towards prefabricated building construction. At present, some companies have started to produce prefabricated ribbed floor slabs. Their usual practice is only to simply complete the tying of the steel bar truss in the factory in advance, and then assemble the shaped bottom plate of the ribbed floor slab with the steel bar truss to form a basic formwork, and then transport these basic formworks to the construction site. However, due to the non-planar structure of the shaped bottom plate of the ribbed floor slab with a large self-weight and the large size of a single floor slab, the cost and difficulty of transporting the basic formwork are very high, and the cost increase is also relatively large. In the fierce competition environment, good economic benefits cannot be obtained. Content of the Utility Model

[0003] To this end, the utility model provides an assembled dense-ribbed floor formwork, in which transverse trusses and strip-shaped floor decking plates are pre-assembled in a factory to form a transverse installation bridge, and the molding base plate of the dense-ribbed floor is disassembled into individual hollow formwork shells, and the transverse installation bridge frames are installed and fixed to structures such as beams and slabs at both ends at the construction site at intervals, and then the hollow formwork shells are sequentially installed between the transverse installation bridge frames, and two adjacent floor decking plates are used as supports to support the hollow formwork shells, thereby finally forming an assembled dense-ribbed floor formwork with the same function as a traditional non-assembled dense-ribbed floor.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled multi-rib floor formwork, comprising:

[0005] A plurality of transverse installation bridges arranged at intervals, wherein the transverse installation bridges include a floor deck, and at least one transverse truss is detachably and fixedly connected to the upper side of the floor deck;

[0006] A plurality of dense-rib modules, wherein a dense-rib module is arranged between every two adjacent floor decking plates, the dense-rib module comprises a plurality of hollow formworks arranged in sequence, the hollow formworks comprise a hollow shell body opening downward, a shell side edge is arranged around the outer side wall of the hollow shell body, formwork supporting edges are respectively arranged on the left and right sides of the floor decking plates, and the hollow formworks are supported and installed between two adjacent floor decking plates through the formwork supporting edges of the left and right adjacent floor decking plates.

[0007] Furthermore, the floor decking is made of a metal plate after multiple bending, and the cross-sectional shape of the floor decking is a "J" shape. A plurality of back reinforcement ribs are fixedly provided on the side of the floor decking away from the transverse truss, and the back reinforcement ribs fit well with the lower side wall of the floor decking.

[0008] Furthermore, a plurality of mold shell connecting holes are provided on the side of the shell, and a plurality of fastening connection mechanisms are provided between every two adjacent hollow mold shells in the dense rib module. The fastening connection mechanisms pass through the corresponding mold shell connecting holes of the two adjacent hollow mold shells in sequence, thereby detachably and fixedly connecting the two adjacent hollow mold shells together.

[0009] Furthermore, the floor decking plate and the side edge of the shell are detachably fixedly connected via a fastening connection mechanism, and the upper end surface of the side edge of the shell is flush with the upper end surface of the floor decking plate.

[0010] Furthermore, the two ends of the transverse truss are arranged beyond the two ends of the floor decking plate, and a plurality of bottom pads are arranged between the bottom end of the transverse truss and the upper end surface of the floor decking plate. The transverse truss and the floor decking plate are detachably fixedly connected by a fastening connection mechanism.

[0011] Furthermore, the transverse truss is in the shape of an inverted trapezoidal column, and anti-falling brackets are fixedly provided at both ends of the transverse truss, and the outer side surface of the hollow shell is inclined relative to the vertical surface.

[0012] Furthermore, a number of support columns are fixedly arranged at the lower end of the floor bearing plate.

[0013] Meanwhile, the utility model also includes a construction method for a grid floor slab using the above-mentioned prefabricated grid floor slab formwork, which includes the following steps:

[0014] S1. Place several horizontally installed bridge frames at intervals within the frame structure composed of multiple main beams, and then fix the two ends of the horizontal truss to the corresponding structures of the two side main beams respectively to achieve the fixation of several horizontally installed bridge frames;

[0015] S2. Install the grid module. Install a hollow formwork from above onto two adjacent floor bearing plates. Support the side edges of the hollow formwork from both sides through the formwork support edges of the adjacent two floor bearing plates, and then detachably fix the floor bearing plate and the side edges of the shell together through a fastening connection mechanism. At this time, taking this hollow formwork as a reference, install the remaining hollow formworks in sequence between the two adjacent floor bearing plates along the extension direction of the floor bearing plate, and connect and fix the adjacent two hollow formworks through a fastening connection mechanism. After all the hollow formworks are in place, detachably fix the side edges of these hollow formworks to the floor bearing plate respectively through a fastening connection mechanism. Then, according to the same method, install the grid module between every two adjacent floor bearing plates;

[0016] S3. Pour cement from above until the cement layer is poured to the specified thickness. After meeting the disassembly requirements, remove the fastening connection mechanisms between the hollow formwork and the floor bearing plate, the fastening connection mechanisms between the horizontal truss and the floor bearing plate, and the fastening connection mechanisms between the adjacent two hollow formworks, and remove the floor bearing plate downward to separate it from the hollow formwork and the horizontal truss. Then, remove the hollow formworks one by one from the cement layer, and finally recycle and reuse the hollow formworks, the floor bearing plate, and the fastening connection mechanisms.

[0017] Furthermore, between step S1 and step S2, there is also a step of installing grid modules between the two horizontally installed bridge frames at the head and tail and the two side main beams respectively. The two side main beams are fixedly provided with beam support bars. In this step, install a hollow formwork from above between the floor bearing plate and the main beam. Support the side edges of the hollow formwork from both sides through the beam support bars and the formwork support edges, and then detachably fix the side edges of the shell to the formwork support edges and the beam support bars respectively through a fastening connection mechanism. At this time, taking this hollow formwork as a reference, install the remaining hollow formworks in sequence between the floor bearing plate and the main beam along the extension direction of the floor bearing plate, and connect and fix the adjacent two hollow formworks through a fastening connection mechanism. After all the hollow formworks are in place, detachably fix the side edges of these hollow formworks to the floor bearing plate and the beam support bars respectively through a fastening connection mechanism.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. By decomposing the bottom formwork of the ribbed floor slab with large size and weight into independent hollow formwork shells, the transportation difficulty and usage cost are reduced, and it is convenient for disassembly and recycling after the floor slab is poured.

[0020] 2. The method of pre-assembling the transverse truss and the strip-shaped floor bearing plate in the factory is adopted to form a transverse installation bridge. After the installation of the transverse installation bridge is completed at the construction site, the laying of the hollow formwork shells is carried out. This structure and construction method meet the requirements of the prefabricated floor slab construction. The installation of the transverse installation bridge is flexible, and the positioning can be completed by using the ground lifting equipment, which reduces the utilization rate of the tower crane, reduces the on-site workload of the construction personnel and also reduces the construction cost. At the same time, this method of disassembled transportation and on-site assembly also has lower transportation cost.

[0021] 3. In the utility model, the floor bearing plate, the transverse truss and the hollow formwork shells are all connected in a detachable manner, and the fixed connection positions are all at the lower end of the floor bearing plate. After the floor slab is poured, the floor bearing plate and the hollow formwork shells can be conveniently disassembled and recycled from below the floor slab, improving the utilization rate. Compared with the traditional prefabricated building, its cost is greatly reduced, and the structure is more reasonable and the firmness is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a prefabricated ribbed floor slab formwork mentioned in Embodiment 1;

[0023] Figure 2 It is a schematic structural diagram of a prefabricated ribbed floor slab formwork mentioned in Embodiment 2;

[0024] Figure 3 For Figure 2 The partial enlarged schematic diagram at A in

[0025] Figure 4 For Figure 2 The schematic structural diagram of the back of a prefabricated ribbed floor slab formwork mentioned in

[0026] Figure 5 For Figure 4 The partial enlarged schematic diagram at B in

[0027] Figure 6 It is the partial structural schematic diagram of the transverse installation bridge formed by the assembly of the floor bearing plate and the transverse truss in the utility model.

[0028] In the figure:

[0029] 100, Horizontal installation bridge, 110, Floor slab formwork, 111, Formwork support edge, 120, Horizontal truss, 121, Bottom cushion block, 122, Anti-toppling bracket, 130, Back strengthening rib, 140, Support column;

[0030] 200, Hollow formwork, 210, Hollow shell, 220, Shell side;

[0031] 300, Fastening connection mechanism. Specific embodiments

[0032] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0033] Embodiment 1, Referring to the attached Figure 1 , The present invention provides a prefabricated ribbed floor formwork, including several horizontally installed bridges 100 arranged at intervals. The horizontally installed bridge 100 includes a floor slab formwork 110. At least one horizontal truss 120 is detachably and fixedly connected to the upper side of the floor slab formwork 110. The shape, material and quantity of the horizontal truss 120 are set according to the specific requirements of the building, as shown in the attached Figure 6As shown in the figure, both ends of the transverse truss 120 extend beyond both ends of the floor formwork 110. A number of bottom pads 121 are provided between the bottom end of the transverse truss 120 and the upper surface of the floor formwork 110. The floor formwork 110 and the transverse truss 120 are detachably and fixedly connected through a fastening connection mechanism 300. The fastening connection mechanism 300 mentioned here and in the following text includes connection mechanisms such as bolt-nut fastening mechanisms and screw mechanisms that can achieve fastening connection and can also achieve the detachable function. The reason for setting the bottom pads 121 is that according to the design requirements, the lower end of the transverse truss 120 must cover a certain thickness of the concrete layer. Therefore, the main part of the transverse truss 120 is elevated by using the bottom pads 121 to meet the requirements. At the same time, setting the connection structure between the floor formwork 110 and the transverse truss 120 at the position of the bottom pads 121 can achieve quick positioning by using the cooperation between the bottom pads 121 and the floor formwork 110 during the assembly of the floor formwork 110 and the transverse truss 120, and realize the detachable assembly between the floor formwork 110 and the transverse truss 120, achieving multiple benefits. In this embodiment, the transverse truss 120 is in the shape of an inverted trapezoidal column made of steel pipes or steel bars. Anti-toppling brackets 122 are fixedly arranged at both ends of the transverse truss 120. The anti-toppling brackets 122 are provided because when the transverse installation bridge 100 is installed on site, first, the transverse installation bridge 100 needs to be placed between the specified floor beams or floor slabs. At this time, the transverse installation bridge 100 is supported by both ends of the transverse truss 120. The inverted trapezoidal column shape of the transverse truss 120 will cause it to be top-heavy and easy to topple sideways. Therefore, anti-toppling brackets 122 need to be set at both ends of the transverse truss 120 using materials such as steel bars to improve its stability. The floor formwork 110 is made by bending a metal plate multiple times. In this embodiment, galvanized steel plates are used, taking into account both the requirement of ensuring its strength and the requirement of repeated use. The cross-sectional shape of the floor formwork 110 is in the shape of a "ji" character. The horizontal side edges at both the left and right ends of the "ji"-shaped floor formwork 110 are formwork support edges 111, as shown in Appendix Figure 3 ~Appendix Figure 5As shown, a dense rib module is arranged between two adjacent floor decking plates 110, and the dense rib module includes a plurality of hollow formworks 200 arranged in sequence, and the hollow formworks 200 include a hollow shell 210 opening downwardly, and a shell side 220 is arranged around the outer wall of the hollow shell 210. The hollow formworks 200 are supported and installed between the two adjacent floor decking plates 110 by the shell support edges 111 of the left and right adjacent floor decking plates 110 from the bottom to support the shell side 220, and at the same time, the floor decking plates 110 and the shell side 220 are detachably fixedly connected by a fastening connection mechanism 300. In this embodiment, holes are punched in the side walls of the floor decking plates 110, and then the floor decking plates 110 and the shell side 220 are detachably fixedly connected together by the fastening connection mechanism 300, and the upper end surface of the shell side 220 is flush with the upper end surface of the floor decking plates 110, so that when pouring cement concrete , the flatness of the lower end surface of the rib of the floor slab can be ensured, and there is no need for subsequent leveling. At the same time, the outer side surface of the hollow shell 210 in this embodiment is inclined compared to the vertical surface. The outer side surface with a certain slope can make the flow of concrete smoother when the cement concrete is poured, and at the same time it is convenient for concrete to fill the gap between adjacent hollow shells 210, avoiding the hollow problem caused by insufficient filling. When the hollow formwork is disassembled, the outer side surface with a certain slope is also more convenient for demoulding. A plurality of back reinforcing ribs 130 are fixedly provided on the side of the floor deck 110 away from the transverse truss 120, and the back reinforcing ribs 130 are adapted to fit with the lower side wall of the floor deck 110. The back reinforcing ribs 130 are mainly used to improve the strength of the formwork support edges 111 at both ends of the floor deck 110 to prevent deformation caused by excessive force on the formwork support edges 111 at both ends.

[0034] In some embodiments, a plurality of formwork connection holes are provided on the side 220 of the shell body, and a plurality of fastening connection mechanisms 300 are provided between every two adjacent hollow formworks 200 in the dense rib module. The fastening connection mechanisms 300 sequentially pass through the corresponding formwork connection holes of the two adjacent hollow formworks 200 to detachably and fixedly connect the two adjacent hollow formworks 200 together. This structure is added to further enhance the sealing performance of the connection between the two adjacent hollow formworks 200. This design can improve the problem of gaps at the connection due to insufficient strength when pouring concrete.

[0035] This embodiment also includes a multi-ribbed floor construction method using the above-mentioned assembled multi-ribbed floor formwork, comprising the following steps:

[0036] S1. Place several pre-assembled horizontally installed bridge girders 100 at specified construction positions at intervals. During actual construction, a tower crane can be used for hoisting, or a mobile lifting device can be used on the ground to lift the horizontally installed bridge girders 100 to the installation position for placement. Then, the two ends of the transverse truss 120 are respectively fixedly connected to the corresponding structures on both sides to fix several horizontally installed bridge girders 100. Generally, at the construction site, first, according to the design position, the two ends of the transverse truss 120 are first erected between two roof beams or floor slabs. After pre-positioning in this way, the transverse truss 120 is fixed;

[0037] S2. Install the ribbed module group. First, install the ribbed module group between the two horizontally installed bridge girders 100 at the head and tail and the main girders on both sides in sequence, and then install the ribbed module group between adjacent horizontally installed bridge girders 100. First, the construction personnel use a mobile lifting device to lift a hollow formwork 200 from below to above the floor slab 110, and then install it between the horizontally installed bridge girders 100 at both ends and the main girders on both sides. The main girders on both sides are fixedly provided with beam support bars. The formwork support edges 111 of adjacent floor slabs 110 and the beam support bars of the main girders respectively support the side edges 220 of the shell of the hollow formwork 200 from both sides. Then, the side edges 220 of the shell are respectively detachably fixedly connected to the formwork support edges 111 and the beam support bars through the fastening connection mechanism 300. At this time, taking this hollow formwork 200 as a reference, the remaining hollow formworks 200 are sequentially installed between the horizontally installed bridge girders 100 and the main girders along the extension direction of the floor slab 110. The adjacent side edges 220 of the shells of the hollow formworks 200 are closely attached, and the adjacent two hollow formworks 200 are fixedly connected through the fastening connection mechanism 300. After all the hollow formworks 200 are in place, the side edges 220 of these hollow formworks 200 are respectively detachably fixedly connected to the floor slab 110 through the fastening connection mechanism 300. Then, in the same way, install the ribbed module group between every two adjacent floor slabs 110. The formwork support edges 111 of the adjacent two floor slabs 110 respectively support the side edges 220 of the shell of the hollow formwork 200 from both sides, and then use the fastening connection mechanism 300 to fix each component as required. In this way, the installation of the assembled ribbed floor formwork is completed. Then, according to the design requirements, longitudinal steel bars can be inserted into the gaps between adjacent two hollow formworks 200. The longitudinal steel bars and the transverse truss 120 are fixed by welding or tying, etc. At the same time, a surface steel bar layer can also be installed above all the hollow formworks 200 as required, and embedded facilities such as water and electricity can be installed. All of the above can be completed according to the actual requirements of the construction site;

[0038] S3. Pour cement from top to bottom until the cement layer reaches the specified thickness. After meeting the disassembly requirements, remove the fastening connection mechanisms 300 between the hollow formwork 200 and the floor slab 110, the fastening connection mechanisms 300 between the transverse truss 120 and the floor slab 110, the fastening connection mechanisms 300 between the hollow formwork 200 and the beam support bars, and the fastening connection mechanisms 300 between two adjacent hollow formworks 200. Then, remove the floor slab 110 downward to separate it from the hollow formwork 200 and the transverse truss 120. Then, remove the hollow formwork 200 from the cement layer one by one downward. Finally, recycle and reuse all the fastening connection mechanisms 300, hollow formworks 200, and floor slabs 110. Thus, the construction of the entire prefabricated ribbed floor slab is completed.

[0039] Example 2. Refer to the attached Figure 2 As shown, on the basis of Example 1, in Example 2, a number of support columns 140 are fixedly arranged at the lower end of the floor slab 110. During actual construction, the lower ends of these support columns 140 are installed on the ground or platform below. These support columns 140 can provide better support force for the horizontally installed bridge 100 and still ensure its structural strength during the pouring of a relatively thick concrete layer. During the demolition stage, it is necessary to first remove the support columns 140 to facilitate the subsequent removal of the floor slab 110.

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the protection scope of the present invention. The orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0041] The above are only the preferred embodiments of the present invention. Any person skilled in the art may modify the present invention using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention falls within the scope of protection required by the present invention.

Claims

1. An assembled ribbed floor formwork, characterized in that, include: A plurality of transverse installation bridge frames (100) arranged at intervals, wherein the transverse installation bridge frames (100) include a floor deck (110), and at least one transverse truss (120) is detachably and fixedly connected to the upper side of the floor deck (110); A plurality of dense rib modules, wherein one dense rib module is arranged between every two adjacent floor decking plates (110), and the dense rib modules include a plurality of hollow formworks (200) arranged in sequence, wherein the hollow formworks (200) include a hollow shell (210) opening downward, and a shell side edge (220) is arranged around the outer wall of the hollow shell (210), and the left and right sides of the floor decking plates (110) are respectively provided with formwork support edges (111), and the hollow formwork (200) is supported and installed between the two adjacent floor decking plates (110) through the formwork support edges (111) of the left and right adjacent floor decking plates (110).

2. The fabricated ribbed floor formwork according to claim 1, characterized in that: The floor decking plate (110) is made of a metal plate after multiple bending. The cross-section of the floor decking plate (110) is in the shape of a Chinese character "几". A plurality of back reinforcing ribs (130) are fixedly arranged on the side of the floor decking plate (110) away from the transverse truss (120). The back reinforcing ribs (130) are adapted to fit the lower side wall of the floor decking plate (110).

3. The prefabricated ribbed floor formwork according to claim 2, characterized in that: The shell side (220) is provided with a plurality of mold shell connection holes, and a plurality of fastening connection mechanisms (300) are provided between each two adjacent hollow mold shells (200) in the dense rib mold group. The fastening connection mechanisms (300) pass through the corresponding mold shell connection holes of the two adjacent hollow mold shells (200) in sequence, thereby detachably and fixedly connecting the two adjacent hollow mold shells (200) together.

4. The prefabricated ribbed floor formwork according to claim 3, characterized in that: The floor decking plate (110) and the shell side (220) are detachably fixedly connected via a fastening connection mechanism (300), and the upper end surface of the shell side (220) is flush with the upper end surface of the floor decking plate (110).

5. The fabricated ribbed floor formwork according to claim 1, characterized in that: The two ends of the transverse truss (120) are arranged beyond the two ends of the floor decking plate (110); a plurality of bottom pads (121) are arranged between the bottom end of the transverse truss (120) and the upper end surface of the floor decking plate (110); and the transverse truss (120) and the floor decking plate (110) are detachably fixedly connected via a fastening connection mechanism (300).

6. The prefabricated ribbed floor formwork according to claim 5, characterized in that: The transverse truss (120) is in the shape of an inverted trapezoidal column, and anti-falling brackets (122) are fixedly arranged at both ends of the transverse truss (120), and the outer side surface of the hollow shell (210) is inclined relative to the vertical surface.

7. The prefabricated ribbed floor formwork according to claim 2, characterized in that: A plurality of support columns (140) are fixedly arranged at the lower end of the floor deck (110).

Images