Prefabricated slab self-supporting connecting structure

Abstract

The utility model discloses a prefabricated slab self-supporting connection structure which reduces the height occupation of building space, is free of floor slab supporting and can flexibly adjust the elevation of a floor slab. The prefabricated slab self-supporting connection structure comprises a prefabricated slab, and the end part of the prefabricated slab is provided with an extended steel bar; an inverted-T-shaped beam is arranged between every two adjacent prefabricated plates, and a supporting assembly capable of adjusting the longitudinal supporting height is arranged on the inverted-T-shaped beam and located below the prefabricated plates. The structure is simple, site construction procedures are simplified, the prefabricated floor slab is free of supporting, and building height occupation is reduced; the connecting strength of the inverted-T-shaped beam and the prefabricated slab in the pouring area is improved through the extension reinforcing steel bars and the connecting studs; the supporting strength is enhanced by lateral stiffening ribs 9; the supporting assembly flexibly adjusts the supporting height and unifies the floor slab elevation; the steel template uniformly conducts stress and limits a pouring area; modular design and prefabricated part machining are adopted, the rapid assembling mode is adopted, the construction progress is greatly accelerated, time and manpower are saved, the construction efficiency and the fabricated building quality are improved, and the fabricated steel structure building quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a self-supporting connection structure of prefabricated panels. Background Art

[0002] Prefabricated structures are concrete structures constructed by assembling or connecting prefabricated components as their primary load-bearing members. Prefabricated reinforced concrete structures are a key development direction in building structures. Compared to cast-in-place construction methods, they facilitate the development of building industrialization, improve production efficiency and conserve energy, promote the development of green and environmentally friendly buildings, and contribute to improving and ensuring the quality of construction projects.

[0003] However, in current prefabricated steel structures, floor slabs are placed on top of steel beams, increasing the height occupied by the beams and slabs. Furthermore, after the steel beams are installed, it is difficult to adjust the floor slab elevation, or floor supports are required to adjust the floor slab elevation. These factors have hindered the promotion and application of prefabricated steel structures.

[0004] Precast panels are floor slabs used in early construction and are the formwork or panels required for construction projects. They are called precast panels because they are prefabricated concrete blocks manufactured and processed at a prefabrication site and then transported directly to the construction site for installation. Precast panels offer excellent overall integrity, with smooth upper and lower surfaces. To create a precast panel, a hollow mold is first constructed using wooden planks. Rebar is placed in the hollow portion of the mold, and then the hollow portion is filled with cement. Once dry, the planks are removed, leaving the precast panel. Precast panels have numerous uses in construction, such as the cement panels used to cover ditches along highways and the cement panels used as insulation on roofs. Summary of the Invention

[0005] The utility model aims to provide a prefabricated plate self-supporting connection structure which reduces the height occupation of building space, eliminates the need for floor support, and can flexibly adjust the floor elevation.

[0006] The utility model adopts the following technical scheme to achieve its invention purpose: a prefabricated panel self-supporting connection structure, including prefabricated panels installed in sequence, wherein the prefabricated panels are fully prefabricated reinforced concrete floor slabs, and the ends of the prefabricated panels are provided with extended steel bars extending outward from the inside of the prefabricated panels; an inverted T-beam is provided between two adjacent prefabricated panels and can be cast as one with the extended steel bars of the two adjacent prefabricated panels; a support component with adjustable longitudinal support height is provided on the inverted T-beam and below the prefabricated panels.

[0007] The inverted T-shaped beam described in the present invention includes a horizontal plate and a vertical plate arranged perpendicular to the horizontal plate. The vertical plate is located between two adjacent prefabricated plates and can be cast as a whole with the extended steel bars of the two adjacent prefabricated plates, thereby reducing the building height occupancy; the support components are arranged on both sides of the vertical plate as vertical supports for the prefabricated plates, eliminating the need for floor supports.

[0008] The support assembly described in the present invention includes lateral stiffening ribs respectively arranged on both sides of the vertical plate. The lateral stiffening ribs are connected and perpendicular to the horizontal plate and the vertical plate to enhance the support strength; at least two threaded sleeves are provided on the upper part of each lateral stiffening rib, and a support bolt is installed in each threaded sleeve, thereby realizing flexible adjustment of the height of each prefabricated plate.

[0009] The utility model provides a steel formwork perpendicular to the vertical plate between the support assembly and the precast plate, which evenly transmits the force of the support assembly on the weight of the precast plate, facilitates the limitation of the pouring area, and controls the pouring amount of concrete.

[0010] The pouring area of ​​the utility model is poured with high-strength steel fiber concrete.

[0011] Steel fiber concrete is a new type of multiphase composite material formed by adding randomly distributed short steel fibers to ordinary concrete. These randomly distributed steel fibers can effectively hinder the expansion of micro cracks in concrete and the formation of macro cracks, significantly improving the tensile, bending, impact and fatigue resistance of concrete, and has good ductility. High-strength steel fiber concrete is a new type of composite material composed of cement, aggregate, water and high-strength steel fibers. Among them, high-strength steel fibers are the key material, which can effectively improve the tensile strength, toughness, crack resistance and durability of concrete. properties, etc.; high-strength, corrosion-resistant steel fibers are selected, and their length, diameter and shape must meet the design requirements to ensure the reinforcement effect of concrete. Steel fiber concrete generally uses No. 425 and No. 525 ordinary Portland cement, while high-strength steel fiber concrete can use No. 625 Portland cement or alum stone cement; compared with traditional concrete, high-strength steel fiber concrete has higher strength and better toughness, which can better meet the requirements of modern buildings for material properties. At the same time, the good crack resistance and durability of high-strength steel fiber concrete can effectively extend the service life of the building.

[0012] The extended steel bars described in the present invention include top extended steel bars and bottom extended steel bars, which are respectively located at the top and bottom of the ends of the prefabricated panels. The top extended steel bars are located above the vertical panels and are longer than the bottom extended steel bars. The bottom extended steel bars are located on both sides of the vertical panels, and the top ends of the bottom extended steel bars are 10 mm to 20 mm away from the vertical panels, forming an interlaced connection structure and avoiding mutual wear caused by thermal expansion and contraction.

[0013] Connecting bolts are provided on both sides of the vertical plate of the utility model. The connecting bolts are located above the steel formwork, which limits the steel formwork and increases the bonding strength between the vertical plate of the inverted T-beam and the casting area.

[0014] Due to the adoption of the above technical scheme, the utility model has better achieved the purpose of the invention. Its structure is simple, the on-site construction process is simplified, and the prefabricated floor slabs are support-free. Compared with the traditional steel beam and floor slab connection nodes, the inverted T-beam is used to reduce the occupation of building height, saving building space and building floor height; the extension of steel bars and connecting bolts improves the connection strength between the inverted T-beam and the prefabricated slab in the casting area; the lateral stiffening ribs enhance the supporting strength of the vertical plate; the supporting bolts installed in the threaded sleeve of the supporting assembly flexibly adjust the supporting height of the prefabricated slab and unify the floor slab elevation; the steel formwork evenly transmits the force of the supporting assembly on the deadweight of the prefabricated slab, and is convenient for limiting the casting area and controlling the pouring amount of concrete; each component is connected into a whole in an appropriate manner according to its own bearing capacity, and modular design and prefabricated parts processing are adopted. Compared with traditional construction methods, the rapid assembly method greatly speeds up the construction progress, saves a lot of time and manpower, improves the construction efficiency and the quality of prefabricated buildings, and improves the quality of prefabricated steel structure buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the top extension steel bar 2 and the bottom extension steel bar 4 of the prefabricated panel 1 in the present invention;

[0017] Figure 3 This is a structural diagram of the lateral stiffening ribs 9, threaded sleeves 10, and support bolts 8 of the support assembly package in the present invention;

[0018] Figure 4 It is a structural schematic diagram of the connecting bolt 3 provided on the vertical plate 5 in the present invention.

[0019] In the figure: 1. Precast slab, 2. Top extension steel bar, 3. Connecting studs, 4. Bottom extension steel bar, 5. Vertical slab, 6. Horizontal slab, 7. Steel formwork, 8. Support bolts, 9. Lateral stiffeners, 10. Threaded sleeve, 11. Casting area. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Depend on Figures 1 to 4 It can be seen that a prefabricated panel self-supporting connection structure includes prefabricated panels 1 installed in sequence, wherein the prefabricated panels 1 are fully prefabricated reinforced concrete floor slabs, and the ends of the prefabricated panels 1 are provided with extended steel bars extending from the inside of the prefabricated panels 1 to the outside; an inverted T-beam is provided between two adjacent prefabricated panels 1, which can be cast as one with the extended steel bars of the two adjacent prefabricated panels 1, and a support component with adjustable longitudinal support height is provided on the inverted T-beam and below the prefabricated panels 1.

[0022] The inverted T-beam described in the present invention includes a horizontal plate 6 and a vertical plate 5 perpendicular to the horizontal plate 6. The vertical plate 5 is located between two adjacent prefabricated panels 1 and can be cast as a whole with the extended steel bars of the two adjacent prefabricated panels 1, thereby reducing the building height occupancy; the support assembly is arranged on both sides of the vertical plate 5 as vertical support for the prefabricated panels 1, eliminating the need for floor support.

[0023] The support assembly described in the present invention includes lateral stiffening ribs 9 respectively arranged on both sides of the vertical plate 5. The lateral stiffening ribs 9 are connected and perpendicular to the horizontal plate 6 and the vertical plate 5 to enhance the support strength; a threaded sleeve 10 (two in this embodiment) is provided on the upper part of each lateral stiffening rib 9, and a support bolt 8 is installed in the threaded sleeve 10, thereby realizing flexible adjustment of the height of each prefabricated plate 1.

[0024] A steel formwork 7 perpendicular to the vertical plate 5 is provided between the support assembly and the precast panel 1 in the present invention, which evenly transmits the force exerted by the support assembly on the weight of the precast panel 1, and facilitates limiting the pouring area 11 to control the pouring amount of concrete.

[0025] The extended steel bars described in the present invention include top extended steel bars 2 and bottom extended steel bars 4, which are respectively located at the top and bottom of the ends of the prefabricated plate 1. The top extended steel bars 2 are located above the vertical plate 5 and the length of the top extended steel bars 2 is greater than that of the bottom extended steel bars 4; the bottom extended steel bars 4 are located on both sides of the vertical plate to form an interlaced connection structure.

[0026] Connecting studs 3 are provided on both sides of the vertical plate 5 of the present invention. The connecting studs 3 are located above the steel formwork 7, which limit the steel formwork 7 and increase the bonding strength between the vertical plate 5 and the casting area 11 of the inverted T-beam.

[0027] During the construction of the present invention, first install the inverted T-beam to the specified position, screw the support bolts 8 into the threaded sleeves 10 respectively, and adjust them to the specified elevation, and measure and verify the elevation and straightness of the support bolts 8; then, install the steel formwork 7 so that it is placed on the support bolts 8, and weld the connecting studs 3 on the vertical plate 5 of the inverted T-beam at the position above the steel formwork 7; hoist the prefabricated panels 1 on both sides of the vertical plate 5 of the inverted T-beam respectively, so that the top extension steel bars 2 at both ends of the prefabricated panels 1 are located at the vertical plate 5. At the top, the bottom extended steel bars 4 are located on both sides of the vertical plate to form a staggered structure; after the hoisting is completed, the elevation of the precast panel 1 is rechecked, and the discrepancies are fine-tuned using the support bolts 8; the pouring formwork is installed at both ends (i.e., on both sides of the assembled multi-layer precast shear wall), and together with the steel formwork 7 and the end faces of the two adjacent precast panels 1, a pouring area 11 is formed to carry out on-site pouring and vibration of concrete; after the pouring is completed and the conditions for demoulding are met, the support bolts 8 are turned to lower its support height, and the steel formwork 7 can be extracted and removed.

Claims

1. A prefabricated panel self-supporting connection structure, comprising a prefabricated panel, characterized in that The ends of the prefabricated panels are provided with extended steel bars; an inverted T-beam is provided between two adjacent prefabricated panels, and a support assembly with adjustable longitudinal support height is provided on the inverted T-beam and below the prefabricated panels.

2. A prefabricated panel self-supporting connection structure according to claim 1, characterized in that The inverted T-shaped beam comprises a horizontal plate and a vertical plate arranged perpendicularly to the horizontal plate. The vertical plate is located between two adjacent prefabricated plates, and the supporting components are arranged on both sides of the vertical plate.

3. The self-supporting connection structure of prefabricated panels according to claim 1, characterized in that The support assembly includes lateral stiffening ribs. The upper part of the lateral stiffening ribs is provided with a threaded sleeve, and a support bolt is installed in the sleeve.

4. A prefabricated panel self-supporting connection structure according to claim 2, characterized in that The support assembly includes lateral stiffening ribs. A threaded sleeve is provided on the upper portion of the lateral stiffening rib, and a support bolt is installed in the sleeve.

5. The self-supporting connection structure of prefabricated panels according to claim 3, characterized in that A steel template is provided between the support assembly and the prefabricated plate.

6. A prefabricated panel self-supporting connection structure according to claim 4, characterized in that A steel template is provided between the support assembly and the prefabricated plate.

7. A prefabricated panel self-supporting connection structure according to claim 1 or 2 or 3 or 4 or 5, characterized in that The extended steel bars include top extended steel bars and bottom extended steel bars located at the top and bottom of the prefabricated plate ends respectively. The top extended steel bars are located above the vertical plate and the length of the top extended steel bars is greater than that of the bottom extended steel bars. The bottom extended steel bars are located on both sides of the vertical plate.

8. The self-supporting connection structure of prefabricated panels according to claim 6, characterized in that The extended steel bars include top extended steel bars and bottom extended steel bars located at the top and bottom of the prefabricated plate ends respectively. The top extended steel bars are located above the vertical plate and the length of the top extended steel bars is greater than that of the bottom extended steel bars. The bottom extended steel bars are located on both sides of the vertical plate.

9. A prefabricated panel self-supporting connection structure according to claim 2, 4 or 6, characterized in that Connecting bolts are correspondingly provided on both sides of the vertical plate.

10. The self-supporting connection structure of prefabricated panels according to claim 8, characterized in that Connecting bolts are correspondingly provided on both sides of the vertical plate.

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