CN220666644U - Small-amplitude prestress assembled composite floor slab transportation cracking-resistant structure - Google Patents
Small-amplitude prestress assembled composite floor slab transportation cracking-resistant structure Download PDFInfo
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- CN220666644U CN220666644U CN202321991972.2U CN202321991972U CN220666644U CN 220666644 U CN220666644 U CN 220666644U CN 202321991972 U CN202321991972 U CN 202321991972U CN 220666644 U CN220666644 U CN 220666644U
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- reinforcing ribs
- floor slab
- prestress
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000005336 cracking Methods 0.000 title claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 59
- 230000002787 reinforcement Effects 0.000 claims description 8
- 238000005728 strengthening Methods 0.000 claims 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 239000004567 concrete Substances 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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Abstract
The utility model discloses a small-amplitude prestress assembled composite floor slab transportation cracking-resistant structure, which belongs to the field of assembled building structure design and comprises a reinforcing component and a floor slab body, wherein the reinforcing component is arranged in the middle of the floor slab body, two ends of a transverse screw rod and a longitudinal screw rod of the reinforcing component respectively penetrate through wide edges and long edges on two sides of the floor slab body, and nuts propped against the side edges of the floor slab body are engaged with two ends of the transverse screw rod and the longitudinal screw rod through threads. The utility model avoids cracking in the middle of the floor slab by applying a certain prestress to the floor slab body.
Description
Technical Field
The utility model belongs to the field of assembly type building structure design, and particularly relates to a small-amplitude prestress assembly type composite floor slab transportation cracking-resistant structure.
Background
The composite floor slab is an assembled integral floor slab formed by superposing precast slabs and cast-in-situ reinforced concrete layers. The composite floor slab has good integrity, the upper and lower surfaces of the slab are smooth, the decoration of the finish layer is convenient, and the composite floor slab is suitable for high-rise buildings and large-bay buildings with high overall rigidity requirements.
The composite truss can be arranged in the composite floor slab, but due to the quality control problem of building materials and the influence of uncertain factors in the transportation and installation processes of components, the bending resistance bearing capacity of the composite truss is insufficient, the floor slab is cracked, the durability problem of structural components can occur, and the normal use is influenced.
Disclosure of Invention
The utility model aims to provide a small-amplitude prestress assembled composite floor slab transportation anti-cracking structure, which solves the problems that the structural components possibly have durability problems and normal use is influenced due to the fact that the bending resistance bearing capacity of a composite truss is insufficient and the floor slab cracks due to the quality control problem of building materials and the influence of uncertain factors in the component transportation and installation processes.
The utility model provides a crack structure is resisted in transportation of small-size prestressing force assembled coincide floor, includes reinforcement subassembly and floor body, the middle part of floor body is equipped with reinforcement subassembly, reinforcement subassembly's horizontal screw rod and longitudinal screw rod's both ends wear out respectively the both sides broadside and the long limit of floor body, horizontal screw rod and longitudinal screw rod's both ends have through threaded engagement to support the nut of pressing the floor body side.
Preferably, the reinforcement assembly comprises a transverse prestress reinforcing rib and longitudinal prestress reinforcing ribs, a plurality of transverse prestress reinforcing ribs and a plurality of longitudinal prestress reinforcing ribs are symmetrically distributed in the floor body, two ends of the transverse prestress reinforcing ribs are fixedly connected with transverse screws, two ends of the longitudinal prestress reinforcing ribs are fixedly connected with longitudinal screws, and two thirds of the transverse screws and the longitudinal screws are located in the floor body.
Preferably, the number of the transverse prestress reinforcing ribs and the number of the longitudinal prestress reinforcing ribs are even.
Preferably, the ends of the transverse screw rod and the longitudinal screw rod are further provided with a base plate, and the base plate is clamped between the screw cap and the side edge of the floor slab body.
Preferably, the interior of the floor body is further penetrated with a plurality of transverse steel bars and a plurality of longitudinal steel bars, the transverse steel bars and the longitudinal steel bars are interwoven into a net structure, and the transverse steel bars and the longitudinal steel bars are symmetrically distributed on two sides of the transverse prestress reinforcing bars and the longitudinal prestress reinforcing bars
The utility model has the following advantages:
when the floor slab body is manufactured, transverse prestress reinforcing ribs, longitudinal prestress reinforcing ribs, transverse reinforcing steel bars and longitudinal reinforcing steel bars are paved in a rectangular die, after the transverse prestress reinforcing ribs and the longitudinal prestress reinforcing ribs are tensioned to reach a certain value, nuts are screwed on the transverse screw rod and the longitudinal screw rod, and concrete is poured; after the concrete is cured, removing the nuts, and applying small prestress to the concrete through the small elastic resilience of the transverse prestress reinforcing ribs and the longitudinal prestress reinforcing ribs; in the actual carrying process, screw nuts are screwed on the transverse screw rod and the longitudinal screw rod, and certain pressure is applied to the floor slab body through the screw nuts, so that bending and cracking of the middle part of the floor slab body are avoided. The utility model avoids cracking in the middle of the floor slab by applying a certain prestress to the floor slab body.
Drawings
FIG. 1 is a schematic three-dimensional structure of the present utility model;
FIG. 2 is a top view of the present utility model;
fig. 3 is a schematic view of the internal structure of the present utility model.
Wherein:
1. a floor body; 10. transverse steel bars; 11. longitudinal steel bars;
2. a reinforcement assembly; 20. transverse prestress reinforcing ribs; 21. longitudinal prestress reinforcing ribs; 22. a transverse screw; 23. a longitudinal screw; 24. a backing plate; 25. and (5) a screw cap.
Detailed Description
The following detailed description of the embodiments of the utility model, given by way of example only, is presented in the accompanying drawings to aid in a more complete, accurate, and thorough understanding of the inventive concepts and aspects of the utility model by those skilled in the art.
The small-amplitude prestress assembled composite floor slab transportation cracking-resistant structure comprises a reinforcing component 2 and a floor slab body 1, wherein the reinforcing component 2 is arranged in the middle of the floor slab body 1, two ends of a transverse screw 22 and a longitudinal screw 23 of the reinforcing component 2 respectively penetrate through wide edges and long edges of two sides of the floor slab body 1, and nuts 25 propped against the side edges of the floor slab body 1 are engaged with two ends of the transverse screw 22 and the longitudinal screw 23 through threads.
The reinforcing component 2 comprises transverse prestress reinforcing ribs 20 and longitudinal prestress reinforcing ribs 21, a plurality of transverse prestress reinforcing ribs 20 and a plurality of longitudinal prestress reinforcing ribs 21 are symmetrically distributed in the floor body 1, two ends of the transverse prestress reinforcing ribs 20 are fixedly connected with transverse screws 22, two ends of the longitudinal prestress reinforcing ribs 21 are fixedly connected with longitudinal screws 23, and two thirds of the transverse screws 22 and the longitudinal screws 23 are located in the floor body 1. The number of the transverse prestress reinforcing ribs 20 and the longitudinal prestress reinforcing ribs 21 is even. The ends of the transverse screw 22 and the longitudinal screw 23 are also provided with a backing plate 24, and the backing plate 24 is clamped between the nut 25 and the side edge of the floor slab body 1.
Transverse prestress reinforcing ribs 20 and longitudinal prestress reinforcing ribs 21 are symmetrically arranged on the floor slab body 1 respectively, and two ends of the transverse prestress reinforcing ribs 20 and the longitudinal prestress reinforcing ribs 21 are fixedly connected with transverse screws 22 and longitudinal screws 23 respectively. The short span direction longitudinal prestress reinforcing rib 21 is placed at the bottom, a small prestress is applied by a method of strongly tightening nuts on the transverse screw 22 and the longitudinal screw 23, and a double nut is used to apply pressure simultaneously, so that the steel bars are prevented from loosening. The applied load may be by a torque wrench. The small prestress is used for counteracting part of tensile stress, plays a role in preventing cracking, has large dispersion of tensile strength indexes, properly counteracts a point of bending tensile stress, and can ensure engineering quality.
The inside of the floor body 1 is further penetrated with a plurality of transverse reinforcing steel bars 10 and a plurality of longitudinal reinforcing steel bars 11, the transverse reinforcing steel bars 10 and the longitudinal reinforcing steel bars 11 are interwoven to form a net structure, and the transverse reinforcing steel bars 10 and the longitudinal reinforcing steel bars 11 are distributed and symmetrically distributed on two sides of the transverse prestress reinforcing steel bars 20 and the longitudinal prestress reinforcing steel bars 21.
The transverse steel bars 10 and the longitudinal steel bars 11 are necessary components of the concrete precast floor slab, the transverse steel bars 10 and the longitudinal steel bars 11 are interwoven to form a net structure, the bending resistance of the whole floor slab body 1 can be effectively enhanced, and meanwhile the floor slab body 1 is prevented from being broken.
The actual floor pouring steps are as follows:
firstly, a rectangular mould of a floor slab body is manufactured, rib penetrating holes are reserved on four sides of the rectangular mould, and a reinforcing nut 25 and a backing plate 24 are prepared; then, paving transverse prestress reinforcing ribs 20, longitudinal prestress reinforcing ribs 21, transverse reinforcing steel bars 10 and longitudinal reinforcing steel bars 11 in a rectangular die, enabling two ends of the transverse prestress reinforcing ribs 20, the longitudinal prestress reinforcing ribs 21, the transverse reinforcing steel bars 10 and the longitudinal reinforcing steel bars 11 to pass through reserved steel bar penetrating holes, tensioning the transverse prestress reinforcing ribs 20 and the longitudinal prestress reinforcing ribs 21 to reach a certain value, screwing nuts 25 on the transverse screw rods 22 and the longitudinal screw rods 23, and pouring concrete; after the concrete curing is completed, removing the nuts 25, and applying small prestress to the concrete through the small elastic resilience of the transverse prestress reinforcing ribs 20 and the longitudinal prestress reinforcing ribs 21; in the actual carrying process, the nuts 25 are screwed on the transverse screw 22 and the longitudinal screw 23, and a certain pressure is applied to the floor slab body 1 through the nuts 25, so that bending and cracking of the middle part of the floor slab body 1 are avoided.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the above embodiments, but is capable of being modified or applied to other applications without modification, as long as various insubstantial modifications of the inventive concept and technical solutions are adopted, all within the scope of the utility model.
Claims (5)
1. The utility model provides a small-size prestressing force assembled coincide floor transportation anti-cracking structure which characterized in that: including strengthening subassembly (2) and floor body (1), the middle part of floor body (1) is equipped with strengthen subassembly (2), the both ends of horizontal screw rod (22) and longitudinal screw rod (23) of strengthening subassembly (2) wear out respectively the both sides broadside and the long limit of floor body (1), there is nut (25) of supporting the pressure floor body (1) side through the screw thread meshing at the both ends of horizontal screw rod (22) and longitudinal screw rod (23).
2. A small-scale prestressed assembled composite floor transportation crack-resistant structure as defined in claim 1, wherein: the reinforcing component (2) comprises transverse prestress reinforcing ribs (20) and longitudinal prestress reinforcing ribs (21), a plurality of transverse prestress reinforcing ribs (20) and a plurality of longitudinal prestress reinforcing ribs (21) are symmetrically distributed in the floor body (1), two ends of the transverse prestress reinforcing ribs (20) are fixedly connected with transverse screws (22), two ends of the longitudinal prestress reinforcing ribs (21) are fixedly connected with longitudinal screws (23), and two thirds of the transverse screws (22) and the longitudinal screws (23) are located in the floor body (1).
3. A small-scale prestressed assembled composite floor transportation crack-resistant structure as defined in claim 2, wherein: the number of the transverse prestress reinforcing ribs (20) and the number of the longitudinal prestress reinforcing ribs (21) are even.
4. A small-scale prestressed assembled composite floor transportation crack-resistant structure as defined in claim 3, wherein: the ends of the transverse screw (22) and the longitudinal screw (23) are also provided with a base plate (24), and the base plate (24) is clamped between the screw cap (25) and the side edge of the floor slab body (1).
5. A small-scale prestressed assembled composite floor transportation crack-resistant structure as defined in claim 2, wherein: the inside of floor body (1) has still run through many horizontal reinforcing bars (10) and many longitudinal reinforcement (11), horizontal reinforcing bar (10) with longitudinal reinforcement (11) interweave and are the network structure, many horizontal reinforcing bars (10) and many longitudinal reinforcement (11) distribute the symmetric distribution in the both sides of horizontal prestressing force strengthening rib (20) and longitudinal prestressing force strengthening rib (21).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321691104 | 2023-06-30 | ||
| CN2023216911042 | 2023-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220666644U true CN220666644U (en) | 2024-03-26 |
Family
ID=90336492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321991972.2U Active CN220666644U (en) | 2023-06-30 | 2023-07-27 | Small-amplitude prestress assembled composite floor slab transportation cracking-resistant structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220666644U (en) |
-
2023
- 2023-07-27 CN CN202321991972.2U patent/CN220666644U/en active Active
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