A large area floor structure constructed by the jump bay method

Abstract

The utility model discloses a large area terrace structure of construction of skip method is equipped with a plurality of concrete surface layers of skip arrangement on cement stable sand gravel base, and the junction between concrete surface layers all is provided with expansion joint, and the expansion joint is equipped with expansion joint board, and the expansion joint board is equipped with closed cell type expanded polyethylene stick and road weatherproof glue, and the expansion joint is equipped with closed cell type expanded polyethylene stick and road weatherproof glue, and the edge of every concrete surface layer of expansion joint both sides is equipped with steel bar hidden beam, and the expansion joint place links even distribution's transfer bar, and one end of transfer bar links with the concrete surface layer of one side, and the other end with the concrete surface layer of the other side swing link, the utility model discloses improve the anti -crack anti -settlement ability of large area terrace, prevent uneven settlement and crack development, and the construction of drainage hidden ditch is simple, and cost reduces effect, and enhances the integrity of terrace.

Description

Technical Field

[0001] This utility model relates to a large-area floor structure constructed using the skip-construction method, and belongs to the field of building construction technology. Background Technology

[0002] Currently, large-area floor slabs constructed using the skip-construction method only have anti-crack steel mesh installed and no solid joints are set at the compartment joints. They rely entirely on releasing some of the concrete stress in the early stages. When subjected to large loads, uneven settlement and cracks are prone to occur at the compartment joints. Drainage ditches on load-bearing floors are generally covered with precast slabs. The precast blocks are large, inconvenient to transport and install, and costly. Moreover, the gaps on both sides are prone to cracking. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a large-area floor structure constructed using the skip-bed construction method.

[0004] The technical solution provided by this utility model is as follows: A large-area floor structure constructed using the skip-construction method includes a soil base layer, on which a cement-stabilized gravel base layer is provided. The cement-stabilized gravel base layer is characterized by having several concrete surface layers arranged in sections. Expansion joints with the same depth as the thickness of the concrete surface layer are provided at the junctions between the concrete surface layers. Contraction joints are uniformly distributed laterally and longitudinally on the concrete surface layers, with a depth of 1 / 3 of the concrete surface layer thickness. A drainage ditch connected to the concrete surface layers is provided within the soil base layer. Expansion joints contain expansion joint boards with closed-cell expanded polyethylene rods, and these rods are coated with road weather-resistant adhesive. Contraction joints also contain closed-cell expanded polyethylene rods, each coated with road weather-resistant adhesive. Each concrete surface layer on both sides of the expansion joint has a reinforced concrete beam at its edge. Evenly distributed dowel bars connect to the expansion joints, with one end of each dowel bar connected to one side of the concrete surface layer and the other end movably connected to the other side.

[0005] Furthermore, the drainage ditch comprises a concave ditch consisting of a concrete base slab for drainage and reinforced concrete sidewalls within the soil base and cement-stabilized gravel base. Several prefabricated drainage ditch covers are connected to the grooves at the upper end of the reinforced concrete sidewalls of the drainage ditch. The top surface of the prefabricated drainage ditch covers is at the same level as the upper surface of the cement-stabilized gravel base. The prefabricated drainage ditch covers are provided with evenly distributed reserved drainage holes. The reserved drainage holes are inverted frustum shapes, wider at the top and narrower at the bottom. UPVC drainage risers, whose top openings are sealed with plastic tape and fixed by a steel mesh frame, are inserted into the reserved drainage holes. The upper surface of the UPVC drainage risers is at the same height as the upper surface of the concrete surface layer.

[0006] Furthermore, a protective layer is provided on 2 / 3 of the force transmission rod, and a rigid polyethylene sleeve is fitted over the end of the force transmission rod with the protective layer. A rigid polyethylene sleeve plug is inserted into the end of the rigid polyethylene sleeve. Foam plastic filler is provided between the end of the force transmission rod, the rigid polyethylene sleeve and the rigid polyethylene sleeve plug, and putty is used to fill the gap between the outer periphery of the force transmission rod and the rigid polyethylene sleeve.

[0007] Furthermore, a crack-resistant steel mesh is provided at a distance of 1 / 4 from the upper end of the concrete surface layer.

[0008] Furthermore, the large-area floor structure constructed using the skip-construction method is characterized in that the expansion joint width is 2cm.

[0009] The beneficial effects of this utility model are: This utility model solves the problems of uneven settlement and cracks in large-area load-bearing floors, and maintains the integrity of the surface layer.

[0010] This utility model features a 2cm solid expansion joint to release unreleased temperature stress in the concrete. A dowel bar and a distributed steel reinforcement hidden beam are installed at the expansion joint for local reinforcement to prevent uneven settlement and crack development in weak areas of the floor load-bearing structure. The drainage ditch on the load-bearing floor is not only easy to construct and cost-effective, but also integrally formed and aesthetically pleasing.

[0011] This invention divides a large-area floor into independent concrete blocks, incorporating expansion joints with a depth equal to the thickness of the concrete block and contraction joints one-third the thickness of the concrete block. Intermittent construction allows the poured blocks to contract freely, reducing cracks caused by temperature and shrinkage stresses generated during concrete pouring. To improve overall integrity, dowel bars are installed at the expansion joints to ensure the load-bearing capacity of the joints and the flatness of the load-bearing surface. Furthermore, the expansion and contraction joints enhance the crack resistance and settlement resistance of the large-area floor, effectively preventing uneven settlement caused by heavy vehicle use.

[0012] Expansion joints contain extruded polystyrene boards, closed-cell expanded polyethylene rods, and road weather-resistant sealant. Contraction joints also contain closed-cell expanded polyethylene rods and road weather-resistant sealant. The closed-cell expanded polyethylene rods, acting as the base layer for the weather-resistant sealant, control the shape and thickness of the surface-applied sealant, ensuring that stress is evenly distributed within the sealant during expansion and contraction, thus greatly improving bonding reliability and preventing edge cracking. The road weather-resistant sealant exhibits extremely high weather resistance, anti-aging, anti-chalking, and crack-resistant properties, along with excellent elasticity and displacement capacity and good wide-temperature adaptability.

[0013] The edges of each concrete surface layer on both sides of the expansion joint are equipped with hidden steel beams to resist local stress concentration in the concrete, prevent concrete from cracking, restrain concrete deformation and cracking, maintain the overall function and durability of the expansion joint, and enhance the integrity of the floor.

[0014] A dowel bar connects to the expansion joint, with both ends extending into the concrete surface on either side. Two-thirds of the dowel bar is coated with anti-rust paint and asphalt oil, then covered with a polyethylene film, fitted with a rigid polyethylene sleeve, and filled with foam plastic and putty. The concrete surface expands when heated. If the dowel bar is completely fixed, the expansion of the concrete surface will be restricted, causing the edges of the concrete surface to crush or arch. This design allows one end of the dowel bar to be fixed in the concrete surface on one side, while the other end can slide freely in the concrete surface on the other side. The anti-rust paint and asphalt oil coating on the two-thirds (fixed end) of the dowel bar serves to prevent corrosion and rust; the polyethylene film coating prevents the dowel bar from sticking to the concrete, ensuring free sliding; the rigid polyethylene sleeve ensures smooth sliding and provides precise sliding space; the foam plastic filler prevents concrete from entering and is flexible and compressible; and the putty filling provides a permanent seal, preventing impurities from entering and allowing for a certain degree of displacement.

[0015] This utility model features a concealed drainage ditch. Several prefabricated drainage ditch covers are interlocked within the groove at the upper end of the concave ditch. UPVC drainage risers, secured with a steel mesh frame and sealed with plastic tape, are inserted into pre-drainage holes in the prefabricated drainage covers. The prefabricated covers facilitate the installation of the drainage risers. The pre-drainage holes are truncated cones, wider at the top and narrower at the bottom, to prevent the UPVC drainage risers from falling out. The plastic tape sealing of the drainage risers prevents concrete from falling into the drainage ditch during concrete construction and clogging it. The concealed drainage ditch ensures both drainage function and flow rate. During construction, the drainage holes are regularly formed within the cast-in-place concrete without affecting the concrete finish. The integral forming avoids the vertical seams that can occur with prefabricated blocks, resulting in an aesthetically pleasing appearance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connection structure of the concrete surface layer, expansion joint, and dowel bar of this utility model. Figure 3 This is a schematic diagram of the force transmission rod of this utility model; Figure 4 This is a schematic diagram of the connection structure between the concrete surface layer and the drainage ditch of this utility model. Figure 5 This is a structural schematic diagram of the prefabricated drainage ditch cover of this utility model; Figure 6 This is a schematic diagram of the connection structure between the prefabricated drainage ditch cover and the UPVC drainage riser of this utility model.

[0017] In the diagram: 1. Concrete surface layer; 2. Contraction joint; 3. Expansion joint; 4. Drainage ditch; 5. Expansion joint board; 6. Closed-cell expanded polyethylene rod; 7. Weather-resistant adhesive for roads; 8. Reinforced concrete beam; 9. Dowel bar; 10. Rigid polyethylene sleeve; 11. Foamed plastic filler; 12. Rigid polyethylene sleeve plug; 13. Putty filling; 14. Cement-stabilized gravel base layer; 15. Crack-resistant steel mesh; 51. UPVC drainage riser; 52. Precast drainage ditch cover; 53. Steel mesh frame; 54. Precast cover adhesive layer; 55. Reinforced concrete sidewall of drainage ditch; 56. Concrete base slab of drainage ditch; 57. Reserved drainage hole; 91. Protective layer. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings: like Figures 1-6 As shown, a large-area floor structure constructed using the skip-construction method includes a soil base layer, a cement-stabilized gravel base layer 14 on top of the soil base layer, and several concrete surface layers 1 arranged in sections on top of the cement-stabilized gravel base layer 14. A crack-resistant steel mesh 15 is installed within each concrete surface layer 1 at a distance of 1 / 4 from the top. Expansion joints 3, 2cm wide, are provided at the junctions between the concrete surface layers 1, with the depth of the expansion joints 3 being the same as the thickness of the concrete surface layer 1. Contraction joints 2, evenly distributed laterally and longitudinally, are provided on the concrete surface layers 1, with the depth of the contraction joints 2 being 1 / 3 of the thickness of the concrete surface layer 1. A drainage ditch 4, connected to the concrete surface layers 1, is provided within the soil base layer.

[0019] like Figure 2 , Figure 3 As shown, expansion joint 3 is equipped with an expansion joint plate 5, which is made of extruded polystyrene board. A closed-cell expanded polyethylene rod 6 is mounted on the expansion joint plate 5, and a road-grade weather-resistant adhesive 7 is applied to the closed-cell expanded polyethylene rod 6. Contraction joint 2 is also equipped with a closed-cell expanded polyethylene rod 6, and a road-grade weather-resistant adhesive 7 is applied to the closed-cell expanded polyethylene rod 6. Each concrete surface layer 1 on both sides of the expansion joint 3 is provided with a hidden steel beam 8. The expansion joint 3 is connected with evenly distributed dowel bars 9. The dowel bars 9 extend into the concrete surface layer 1 on both sides with the expansion joint 3 as the center line. Two-thirds of the dowel bars 9 are covered with a protective layer 91. The protective layer 91 is made by covering the dowel bars 9 with anti-rust paint and asphalt oil and then covering them with a plastic polyethylene film to ensure that one end can slide. The end of the dowel bar 9 with the protective layer 91 is covered with a rigid polyethylene sleeve 10. The end of the rigid polyethylene sleeve 10 is fitted with a rigid polyethylene sleeve plug 12. Foam plastic filler 11 is provided between the end of the dowel bar 9, the rigid polyethylene sleeve 10 and the rigid polyethylene sleeve plug 12 to fill the gap of horizontal displacement of the dowel bar. Putty 13 is provided to fill the gap between the outer periphery of the dowel bar 9 and the rigid polyethylene sleeve 10.

[0020] like Figures 4-5As shown, the drainage ditch 4 comprises a concave ditch consisting of a drainage ditch concrete base slab 56 and a drainage ditch reinforced concrete sidewall 55 formed within a soil base layer and a cement-stabilized gravel base layer 14. Several prefabricated drainage ditch covers 52 are connected to each other in the groove of the drainage ditch at the upper end of the drainage ditch reinforced concrete sidewall 55. The prefabricated drainage ditch covers 52 are bonded to the drainage ditch reinforced concrete sidewall 55 through a prefabricated cover adhesive layer 54. The top surface of the prefabricated drainage ditch covers 52 is at the same level as the upper surface of the cement-stabilized gravel base layer 14. The prefabricated drainage ditch covers 52 are provided with evenly distributed reserved drainage holes 57. The reserved drainage holes 57 are inverted frustum-shaped with a wider top and a narrower bottom. UPVC drainage risers 51 with their tops sealed with plastic tape are inserted into the reserved drainage holes 57. The upper surface of the UPVC drainage risers 51 is at the same height as the upper surface of the concrete surface layer 1. The UPVC drainage risers 51 are fixed by a steel mesh frame 53.

[0021] During construction, after the soil base layer of the site is leveled and compacted, a cement-stabilized gravel base layer is constructed. Simultaneously, while the soil base layer is being compacted and leveled, concrete is poured for the bottom and sidewalls of the drainage ditches to form the concrete base slab and reinforced concrete sidewalls. Then, several interconnected precast drainage ditch covers are installed using a string line. At the same time, the concrete surface layer is constructed in sections. Before constructing each individual concrete surface layer, the reinforcing beams are tied, dowel bars are laid, and anti-crack steel mesh is installed. After acceptance, concrete is poured. Expansion joint plates are installed around the perimeter of each individual concrete surface layer, and the remaining sections are constructed in the same order. When constructing the sections with the underground drainage ditches, UPVC drainage risers are inserted into the precast covers, straightened and leveled, and fixed with steel mesh to prevent displacement, forming as the concrete is poured. Contraction joint cutting is performed when the concrete has fully set, followed by concrete curing. After the overall floor construction is completed, expansion joint construction (cleaning the joint - installing closed-cell polyethylene rods - applying tape - injecting weather-resistant road sealant) and contraction joint construction (cleaning the joint - installing closed-cell polyethylene rods - applying tape - injecting weather-resistant road sealant) are carried out.

[0022] It should be understood that any parts not described in detail in this specification belong to the prior art. The above embodiments are merely descriptions of preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and improvements to the technical solutions of this utility model made by those skilled in the art without departing from the spirit of this utility model should fall within the protection scope defined by the claims of this utility model.

Claims

1. A large-area floor structure constructed using the skip-bed method, comprising a soil base layer, upon which a cement-stabilized gravel base layer is provided, characterized in that, The cement-stabilized gravel base course is divided into several concrete surface layers. Expansion joints with the same depth as the thickness of the concrete surface layer are provided at the junctions between the concrete surface layers. Contraction joints, evenly distributed laterally and longitudinally, are provided on the concrete surface layers, with a depth of 1 / 3 of the concrete surface layer thickness. A drainage ditch connected to the concrete surface layers is provided within the soil base course. Expansion joints contain expansion joint boards with closed-cell expanded polyethylene rods coated with road weather-resistant adhesive. Contraction joints also contain closed-cell expanded polyethylene rods coated with road weather-resistant adhesive. Each concrete surface layer on both sides of the expansion joint has a reinforced hidden beam at its edge. Evenly distributed dowel bars connect to the expansion joint, with one end of each dowel bar connected to one side of the concrete surface layer and the other end movably connected to the other side.

2. The large-area floor structure constructed using the skip-construction method according to claim 1, characterized in that... The aforementioned drainage ditch comprises a concave ditch consisting of a concrete base slab and reinforced concrete sidewalls within a soil base layer and a cement-stabilized gravel base layer. Several prefabricated drainage ditch covers are connected to the grooves at the upper end of the reinforced concrete sidewalls of the drainage ditch. The top surface of the prefabricated drainage ditch covers is at the same level as the upper surface of the cement-stabilized gravel base layer. The prefabricated drainage ditch covers have evenly distributed reserved drainage holes, which are inverted frustum shapes, wider at the top and narrower at the bottom. UPVC drainage risers, whose top openings are sealed with plastic tape and fixed by a steel mesh frame, are inserted into the reserved drainage holes. The upper surface of the UPVC drainage risers is at the same height as the upper surface of the concrete surface layer.

3. A large-area floor structure constructed using the skip-construction method according to claim 1, characterized in that... Two-thirds of the force transmission rod is provided with a protective layer. The end of the force transmission rod with the protective layer is covered with a rigid polyethylene sleeve. A rigid polyethylene sleeve plug is inserted into the end of the rigid polyethylene sleeve. Foam plastic filler is provided between the end of the force transmission rod, the rigid polyethylene sleeve and the rigid polyethylene sleeve plug. Putty is used to fill the gap between the outer periphery of the force transmission rod and the rigid polyethylene sleeve.

4. A large-area floor structure constructed using the skip-construction method according to claim 1, characterized in that... The concrete surface layer is provided with crack-resistant steel mesh at a distance of 1 / 4 from the top.

5. A large-area floor structure constructed using the skip-construction method according to claim 1, characterized in that... The expansion joint is 2cm wide.

Images