CN220889116U - Large-span prestressed concrete hollow slab assembly structure - Google Patents
Large-span prestressed concrete hollow slab assembly structure Download PDFInfo
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- CN220889116U CN220889116U CN202322500053.7U CN202322500053U CN220889116U CN 220889116 U CN220889116 U CN 220889116U CN 202322500053 U CN202322500053 U CN 202322500053U CN 220889116 U CN220889116 U CN 220889116U
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- steel pipe
- hollow slab
- core hole
- slab body
- assembly structure
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 109
- 239000010959 steel Substances 0.000 claims abstract description 109
- 239000004567 concrete Substances 0.000 claims description 19
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The utility model discloses a large-span prestressed concrete hollow slab assembly structure, which is characterized in that a reinforced steel pipe is inserted into a core hole of a hollow slab body in advance before the end part of the hollow slab body is placed on a steel beam, then a connecting steel pipe is sleeved on the reinforced steel pipe after one hollow slab body is installed, after the other hollow slab body is installed, the connecting steel pipe is sleeved at one end of two reinforced steel pipes protruding out of the core hole for connection after moving, and a plurality of connecting steel pipes and the steel beam are fixed together through a fixing assembly, so that the structural strength of a connecting part is increased; in addition, the elastic connecting component is arranged, so that the reinforced steel pipe inserted into the core hole cannot fall off along with the lifting of the hollow slab body; meanwhile, in the process, the reinforced steel pipe is inserted into the end part of the core hole of the hollow slab body, so that the shearing bearing capacity of the end part of the hollow slab body is improved, and the assembly stability is improved.
Description
Technical Field
The utility model relates to the technical field of building materials, in particular to a large-span prestressed concrete hollow slab assembly structure.
Background
The prestressed hollow slab produced by the extruder of the mechanical manufacturing company of U.S. SPANCRETE is called SP prestressed hollow slab or SP slab for short. The company starts in 1942, and through continuous practice and improvement, the production line is kept leading in various popular hollow slab production processes in the world. In more than half a century, the SPANCRETE company has exported tens of sets of such devices to germany, japan, switzerland, mexico, egypt, turkish, etc., all with good results. Since the introduction of SP products and related technologies into the China market by the United states Fulin company in 1993, a certain experience has been accumulated in the production, design and research of SP boards, the products are widely applied to projects such as markets, schools and factories, and the prestressed hollow slabs are zero-slump fine stone concrete with the concrete strength grade of C40 to C50.
When the large-span prestressed concrete hollow slab is applied and developed in an assembled building structure, the end part of the prestressed concrete hollow slab needs to be installed and supported by a steel beam, for example, china patent with the application publication number of CN115145642A and the application publication number of 2021, 9 and 28 discloses a slab end slotted hole SP hollow composite slab-steel beam connecting structure and a construction method thereof.
However, when the prestressed concrete hollow slab is assembled, the operations of grooving and perforating the hollow slab are involved, so that the problem of inconvenience in the assembly process is caused.
Disclosure of utility model
The utility model aims to provide a large-span prestressed concrete hollow slab assembly structure which has the functions of facilitating assembly and improving the strength of the assembly structure.
The technical aim of the utility model is realized by the following technical scheme: the utility model provides a large-span prestressed concrete hollow slab assembly structure, includes girder steel, two hollow slab bodies that one end that are close to was shelved on the girder steel and symmetry set up, arrange on the hollow slab body and be provided with a plurality of core holes, the core hole tip embedding of hollow slab body is provided with the enhancement steel pipe, the week side of strengthening the steel pipe is provided with the annular spacing portion of conflict on the hollow slab body terminal surface, the one end of strengthening the steel pipe embedding in the core hole is provided with the elastic connection subassembly that prevents to strengthen the steel pipe and drop, two that correspond strengthen the steel pipe interval setting, the cover is equipped with the connecting steel pipe that the week side has the ring channel between two corresponding strengthening steel pipes, a plurality of be provided with fixed subassembly between connecting steel pipe and the girder steel.
The utility model is further provided with: the elastic connection assembly comprises an end cover which is connected with the end part of the reinforced steel pipe in a threaded mode and matched with the core hole in shape, and an annular sealing gasket which is embedded into the periphery of the end cover and is elastically abutted against the inner wall of the core hole after being deformed.
The utility model is further provided with: the periphery of the reinforced steel pipe is provided with annular concave parts which are arranged at intervals with the inside of the core hole, strip holes which are distributed in a circumferential array are formed in the positions of the reinforced steel pipe corresponding to the annular concave parts, casting openings for casting concrete are formed in the tops of the connected steel pipes, and concrete is formed after the inner wall of the core hole, the reinforced steel pipe and the connected steel pipe are solidified through casting concrete.
The utility model is further provided with: the pouring opening is positioned at the top of the annular groove of the connecting steel pipe, the fixing assembly comprises a fixing plate which is provided with a plurality of arc-shaped protruding parts embedded in the annular grooves of the connecting steel pipes and is abutted against the steel beam, and a fixing screw which penetrates through the end plate of the fixing plate and is connected onto the steel beam in a threaded mode, and the arc-shaped protruding parts cover the pouring opening.
The utility model is further provided with: the length of the reinforced steel pipe extending into the core hole is 2-4 times of the width of the steel beam.
In summary, the beneficial effects of the utility model are as follows:
1. Inserting reinforcing steel pipes into core holes of the hollow slab bodies in advance before the end parts of the hollow slab bodies are placed on the steel beams, sleeving connecting steel pipes on the reinforcing steel pipes after one hollow slab body is installed, sleeving the connecting steel pipes on one end of each of the two reinforcing steel pipes protruding out of the core holes after the other hollow slab body is installed, connecting the connecting steel pipes after moving, fixing a plurality of connecting steel pipes with the steel beams through fixing components, and finally increasing the structural strength of the connecting part; in addition, the elastic connecting component is arranged, so that the reinforced steel pipe inserted into the core hole cannot fall off along with the lifting of the hollow slab body; meanwhile, in the process, the reinforced steel pipe is inserted into the end part of the core hole of the hollow slab body, so that the shearing bearing capacity of the end part of the hollow slab body is improved, and the assembly stability is improved;
2. The elastic connecting assembly comprises an end cover and an annular sealing gasket, so that when the reinforced steel pipe is inserted into the core hole, the reinforced steel pipe can be abutted against the inner wall of the core hole after elastic deformation of the annular sealing gasket, and the condition that the reinforced steel pipe falls off along with the lifting process of the hollow plate body is prevented;
3. Through pouring the concrete into from the pouring mouth of connecting the steel pipe, the concrete is from connecting the steel pipe, strengthen rectangular hole, the annular groove portion of steel pipe, finally be formed with the concrete layer after the inner wall in core hole, strengthen steel pipe, connecting steel pipe department through pouring the concrete solidification, further increase the overall structure intensity of hollow slab body tip, improve the shear-resistant bearing capacity.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
Fig. 3 is a partial structural cross-sectional view of the present utility model.
Reference numerals: 1. a steel beam; 2. a hollow slab body; 21. a core hole; 3. reinforcing the steel pipe; 31. an annular limit part; 32. an annular recessed portion; 33. a slit hole; 4. an elastic connection assembly; 41. an end cap; 42. an annular sealing gasket; 5. connecting steel pipes; 51. pouring the port; 6. a fixing assembly; 61. a fixing plate; 611. an arc-shaped protruding portion; 62. a set screw; 7. and (3) a concrete layer.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
Examples: the utility model provides a large-span prestressed concrete hollow slab assembly structure, as shown in fig. 1, includes girder steel 1, two hollow slab body 2 that are shelved on girder steel 1 and symmetry setting mutually one end, is provided with a plurality of core holes 21 on the hollow slab body 2 range.
As shown in fig. 1 and 2, the end of the core hole 21 of the hollow slab body 2 is embedded with a reinforced steel pipe 3, the periphery of the reinforced steel pipe 3 is provided with an annular limiting part 31 abutting against the end face of the hollow slab body 2, one end of the reinforced steel pipe 3 embedded in the core hole 21 is provided with an elastic connecting component 4 for preventing the reinforced steel pipe 3 from falling off, two corresponding reinforced steel pipes 3 are arranged at intervals, a connecting steel pipe 5 with an annular groove (not marked in the figure) on the periphery is sleeved between the two corresponding reinforced steel pipes 3, and a fixing component 6 is arranged between the plurality of connecting steel pipes 5 and the steel beam 1. The length of the reinforcing steel tube 3 extending into the core hole 21 is 2-4 times the width of the steel beam 1.
As shown in fig. 1 and 3, the elastic connection assembly 4 includes an end cap 41 screwed on the end of the reinforced steel pipe 3 and having a shape matching the core hole 21, and an annular sealing gasket 42 embedded in the peripheral side of the end cap 41, wherein the annular sealing gasket 42 is elastically abutted against the inner wall of the core hole 21 after being deformed.
As shown in fig. 1 to 3, the periphery of the reinforced steel pipe 3 is provided with annular concave portions 32 which are arranged at intervals with the inside of the core hole 21, strip holes 33 which are distributed in a circumferential array are arranged at positions of the reinforced steel pipe 3 corresponding to the annular concave portions 32, pouring openings 51 for concrete pouring are formed at the tops of the connecting steel pipes 5, and concrete layers 7 are formed after the inner walls of the core hole 21, the reinforced steel pipe 3 and the connecting steel pipes 5 are solidified through pouring concrete. The pouring opening 51 is positioned at the top of the annular groove for connecting the steel pipes 5, and the fixing assembly 6 comprises a fixing plate 61 which is provided with a plurality of arc-shaped protruding parts 611 embedded in the annular grooves of the plurality of annular connecting steel pipes 5 and is abutted against the steel beam 1, and a fixing screw 62 which is connected to the steel beam 1 through the end plate of the fixing plate 61 in a threaded manner after passing through the end plate, wherein the arc-shaped protruding parts 611 cover the pouring opening 51.
The implementation effect is as follows: before the end part of the hollow slab body 2 is placed on the steel beam 1, the reinforced steel pipes 3 are inserted into the core holes 21 of the hollow slab body 2 in advance, then after one hollow slab body 2 is installed, the connecting steel pipes 5 are sleeved on the reinforced steel pipes 3, after the other hollow slab body 2 is installed, the connecting steel pipes 5 are sleeved at one ends of the two reinforced steel pipes 3 protruding out of the core holes 21 for connection after moving, and a plurality of connecting steel pipes 5 and the steel beam 1 are fixed together through the fixing assembly 6, so that the structural strength of the connecting part is increased finally; in addition, the elastic connecting component is arranged, so that the reinforced steel pipe 3 inserted into the core hole 21 cannot fall off along with the lifting of the hollow slab body 2; meanwhile, in the process, the reinforcing steel tube 3 is inserted into the end part of the core hole 21 of the hollow plate body 2, so that the shearing bearing capacity of the end part of the hollow plate body 2 is improved, and the assembly stability is improved.
The elastic connection assembly 4 comprises an end cover 41 and an annular sealing gasket 42, so that when the reinforced steel pipe 3 is inserted into the core hole 21, the reinforced steel pipe 3 can be abutted against the inner wall of the core hole 21 after elastic deformation of the annular sealing gasket 42, and falling off of the reinforced steel pipe 3 along with lifting of the hollow slab body 2 is prevented. Through pouring the concrete into from the pouring mouth 51 of connecting steel pipe 5, the concrete is from connecting steel pipe 5, strengthen steel pipe 3, strengthen rectangular hole 33 of steel pipe 3, strengthen the annular groove portion 32 of steel pipe 3, finally be formed with the concrete layer after the inner wall of core hole 21, strengthen steel pipe 3, connecting steel pipe 5 department solidifies through pouring the concrete, further increase the overall structure intensity of hollow slab body 2 tip, improve the shear capacity.
The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.
Claims (5)
1. The utility model provides a large-span prestressed concrete hollow slab assembly structure, includes girder steel (1), two hollow slab body (2) that just symmetry set up on girder steel (1) are shelved to the one end that is close to mutually, arrange on hollow slab body (2) and be provided with a plurality of core holes (21), its characterized in that: the utility model discloses a hollow slab, including hollow slab body (2), reinforcing steel pipe (3) is provided with in core hole (21) tip embedding, the week side of reinforcing steel pipe (3) is provided with annular spacing portion (31) of conflict on hollow slab body (2) terminal surface, the one end of reinforcing steel pipe (3) embedding in core hole (21) is provided with elastic connection subassembly (4) that prevent reinforcing steel pipe (3) to drop, two of correspondence reinforcing steel pipe (3) interval sets up, and the cover is equipped with connecting steel pipe (5) that the week side has the ring channel between two corresponding reinforcing steel pipe (3), a plurality of be provided with fixed subassembly (6) between connecting steel pipe (5) and girder steel (1).
2. A large span prestressed concrete hollow slab assembly structure as recited in claim 1, wherein: the elastic connecting assembly (4) comprises an end cover (41) which is connected to the end part of the reinforced steel pipe (3) in a threaded mode and matched with the core hole (21) in shape, and an annular sealing gasket (42) which is embedded into the periphery of the end cover (41), and the annular sealing gasket (42) is elastically abutted to the inner wall of the core hole (21) after being deformed.
3. A large span prestressed concrete hollow slab assembly structure as recited in claim 2, wherein: the periphery of reinforcing steel pipe (3) is provided with annular depressed part (32) that set up with the inside interval of core hole (21), reinforcing steel pipe (3) correspond annular depressed part (32) department and are provided with rectangular hole (33) that are circumference array distribution, connecting steel pipe (5) top is provided with and supplies concreting's pouring mouth (51), inner wall, reinforcing steel pipe (3) of core hole (21), connecting steel pipe (5) department are formed with concrete layer (7) after solidifying through pouring concrete.
4. A large span prestressed concrete hollow slab assembly structure as recited in claim 3, wherein: the pouring opening (51) is positioned at the top of the annular groove of the connecting steel pipe (5), the fixing assembly (6) comprises a fixing plate (61) which is provided with a plurality of arc-shaped protruding parts (611) embedded in the annular grooves of the connecting steel pipes (5) and is abutted against the steel beam (1), and fixing screws (62) which penetrate through end plates of the fixing plate (61) and are connected onto the steel beam (1) in a threaded mode, and the arc-shaped protruding parts (611) cover the pouring opening (51).
5. A large span prestressed concrete hollow slab assembly structure as recited in claim 1, wherein: the length of the reinforced steel pipe (3) extending into the core hole (21) is 2-4 times of the width of the steel beam (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322500053.7U CN220889116U (en) | 2023-09-14 | 2023-09-14 | Large-span prestressed concrete hollow slab assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322500053.7U CN220889116U (en) | 2023-09-14 | 2023-09-14 | Large-span prestressed concrete hollow slab assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220889116U true CN220889116U (en) | 2024-05-03 |
Family
ID=90868396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322500053.7U Active CN220889116U (en) | 2023-09-14 | 2023-09-14 | Large-span prestressed concrete hollow slab assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220889116U (en) |
-
2023
- 2023-09-14 CN CN202322500053.7U patent/CN220889116U/en active Active
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