CN211037485U - Connecting system of prefabricated wood-concrete combined structure - Google Patents
Connecting system of prefabricated wood-concrete combined structure Download PDFInfo
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- CN211037485U CN211037485U CN201921635083.6U CN201921635083U CN211037485U CN 211037485 U CN211037485 U CN 211037485U CN 201921635083 U CN201921635083 U CN 201921635083U CN 211037485 U CN211037485 U CN 211037485U
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- 239000004567 concrete Substances 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 239000006260 foam Substances 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 15
- 239000002023 wood Substances 0.000 claims abstract description 15
- 239000011178 precast concrete Substances 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 239000011083 cement mortar Substances 0.000 claims abstract description 4
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a connecting system of a prefabricated wood-concrete composite structure, which comprises a wood beam, a prefabricated concrete slab and a prefabricated shear connecting piece; the assembly type shear connecting piece comprises a special embedded part, an inclined hole and an assembly screw; the special embedded part comprises an inclined steel sleeve, a trapezoidal steel plate, a reinforcement penetrating hole and cylindrical foam, and the cylindrical foam is damaged to form an inclined hole after the precast concrete plate is cast and molded; the assembling screw drills into the wood beam along the inclined hole and the inclined steel sleeve, and a screw countersunk head needs to be guaranteed during drilling; and after the inclined holes are assembled, filling the inclined holes by using quick-hardening low-shrinkage cement mortar. The utility model discloses utilize purpose-built-in fitting and assembly screw complex method to realize the connection of prefabricated assembled wood-concrete integrated configuration, its construction degree of difficulty is low, and assembly efficiency is high, compares cast-in-place formula slope screw and has higher rigidity of sliding, also has good bearing capacity and ductility performance simultaneously.
Description
Technical Field
The utility model relates to a novel connection system of prefabricated assembled wood-concrete integrated configuration, mainly used building structure building roof and bridge structures field.
Background
The wood is a renewable and recyclable natural resource and has excellent performances of high tensile strength, low strength-to-weight ratio and the like. The precast concrete slab is energy-saving and environment-friendly, has high compressive strength, large rigidity and small contractibility, and can effectively avoid the change of the moisture content of the wood caused by cast-in-place operation and reduce the potential problem of the structure. Meanwhile, the precast concrete plate is fully contracted, and the creep property of the wood-concrete composite structure can be effectively reduced.
The existing cast-in-place connecting piece comprises a pin type, a bar planting type and a steel plate planting type. The pin-type connecting piece has high shear strength and excellent ductility, but has lower sliding rigidity. The steel bar-planted or steel plate-planted connecting piece has high sliding rigidity and shear strength but insufficient ductility. The research and application of the assembly type connecting piece also have the problems of high precision requirement, low construction efficiency and the like. How to realize the high efficiency and reliability of the assembly of the connection of the precast concrete plate and the wood beam and obtain higher shearing resistance is a key technical problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide a prefabricated assembled wood-concrete integrated configuration's novel connection system, mainly utilize the method of special built-in fitting cooperation assembly screw to realize the connection of prefabricated assembled wood-concrete integrated configuration, it installs conveniently, assembly efficiency is high, compares cast-in-place slope screw and has higher rigidity of sliding, also has good bearing capacity and ductility performance simultaneously.
The utility model adopts the technical proposal that: a connecting system of a prefabricated wood-concrete combined structure comprises a wood beam, a prefabricated concrete slab, in-slab reinforcing steel bars and a prefabricated shear connecting piece, wherein the prefabricated concrete slab is connected with the wood beam through the prefabricated shear connecting piece, and the in-slab reinforcing steel bars are arranged in the prefabricated concrete slab;
the assembly type shear connecting piece comprises a special embedded part, an inclined hole and an assembly screw;
the specially-made embedded parts comprise inclined steel sleeves, trapezoidal steel plates, reinforcement penetrating holes and cylindrical foam, the cylindrical foam is adhered to the tops of the inclined steel sleeves, one trapezoidal steel plate is welded on a bus of the inclined steel sleeves, the reinforcement penetrating holes are reserved in the trapezoidal steel plates, the specially-made embedded parts are embedded into the precast concrete plates in a staggered mode in pairs, and meanwhile, the steel reinforcements in the plates penetrate the reinforcement penetrating holes to form strong anchoring;
after the precast concrete slab is poured and molded, breaking the cylindrical foam to form an inclined hole;
the assembling screw drills into the wood beam along the inclined hole and the inclined steel sleeve, and a screw countersunk head needs to be guaranteed during drilling so as to achieve the anti-pulling effect; and after the inclined holes are assembled, quick-hardening low-shrinkage cement mortar is adopted for filling.
Preferably, the inner diameter of the inclined steel sleeve is 1mm larger than the diameter of the assembly screw in order to prevent the inner wall of the steel sleeve from damaging the thread of the screw during assembly.
Preferably, the shearing resistance of the interface is ensured, the length of the smooth round part of the assembly screw is more than or equal to that of the inclined steel sleeve, and the smooth round part of the assembly screw can be an internal hexagonal head screw or an external hexagonal head screw or a self-tapping screw.
Preferably, to facilitate drilling into the assembly screw, the diameter of the hole formed by the cylindrical foam should be larger than the outer diameter of the drilling wrench used for the corresponding assembly screw.
Has the advantages that: the utility model provides a precast concrete board and wood beam's connection problem, the existence of slope steel sleeve and predetermineeing the hole makes the screw can guarantee inclination and bore into wood beam, has improved the efficiency and the degree of reliability of assembly, has reduced the requirement of assembly precision simultaneously. The inclined steel sleeve is connected with the steel bars in the concrete slab, so that the inclined steel sleeve is completely anchored in the concrete slab, the deformation of the screws in the concrete slab is effectively avoided, and the sliding rigidity of the node is improved. The staggered inclined screws can enable the wood-concrete interface to bear bidirectional shearing force, so that the assembly type connecting system can be applied to simple supporting beams and continuous beams or beam column nodes.
Drawings
Fig. 1 is a schematic view of a connection system of the prefabricated wood-concrete composite structure of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic structural diagram of a tailored embedment.
Description of the drawings: 1 is a wood beam, 2 is a precast concrete slab, 3 is an in-slab steel bar, 4 is a special embedded part, 5 is an inclined hole, and 6 is an assembly screw.
4-1 is an inclined steel sleeve, 4-2 is a trapezoidal steel plate, 4-3 is a reinforcement penetrating hole, and 4-4 is cylindrical foam.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 3, a connection system of a prefabricated wood-concrete composite structure includes a wood beam 1, a prefabricated concrete slab 2, an in-slab reinforcement 3 and a prefabricated shear connector.
The assembly type shear connecting piece comprises a special embedded part 4, an inclined hole 5 and an assembly screw 6; the specially-made embedded part 4 comprises an inclined steel sleeve 4-1, a trapezoidal steel plate 4-2, a reinforcement penetrating hole 4-3 and cylindrical foam 4-4, the cylindrical foam 4-4 is adhered to the top of the inclined steel sleeve 4-1, a trapezoidal steel plate 4-2 is welded on a bus of the inclined steel sleeve 4-1, a reinforcement penetrating hole 4-3 is reserved on the trapezoidal steel plate 4-2, the specially-made embedded parts 4 are embedded into the precast concrete plate 2 in a pair-staggered manner, and meanwhile, the steel reinforcements 3 in the plate penetrate through the reinforcement penetrating hole 4-3 to form strong anchoring; after the precast concrete plate 2 is cast and molded, breaking the cylindrical foam 4-4 to form an inclined hole 5; the assembling screw 6 drills into the wood beam 1 along the inclined hole 5 and the inclined steel sleeve 4-1, and a screw countersunk head needs to be ensured during drilling so as to achieve the anti-pulling effect; and after the inclined hole 5 is assembled, filling the inclined hole with quick-hardening low-shrinkage cement mortar.
In order to prevent the inner wall of the steel sleeve from damaging the screw thread during assembly, the inner diameter of the inclined steel sleeve 4-1 is 1mm larger than the diameter of the assembly screw 6. The shearing resistance of the interface is ensured, the length of the smooth round part of the assembling screw 6 is required to be more than or equal to the length of the inclined steel sleeve 4-1, and the assembling screw can be an internal hexagonal head screw or an external hexagonal head screw or a self-tapping screw. To facilitate drilling of the assembly screws 6, the diameter of the hole formed by the cylindrical foam 4-4 should be larger than the outer diameter of the drilling wrench used for the corresponding assembly screw 6.
The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art and are intended to be within the scope of the present principles and the spirit of the invention.
Claims (4)
1. The utility model provides a prefabricated assembled wood-concrete integrated configuration's connected system which characterized in that: the prefabricated concrete slab is connected with the wood beam through the fabricated shear connector, and the in-slab steel bars are arranged in the prefabricated concrete slab;
the assembly type shear connecting piece comprises a special embedded part, an inclined hole and an assembly screw;
the special embedded parts comprise inclined steel sleeves, trapezoidal steel plates, reinforcement penetrating holes and cylindrical foam, the cylindrical foam is adhered to the tops of the inclined steel sleeves, the trapezoidal steel plates are welded on buses of the inclined steel sleeves, the reinforcement penetrating holes are reserved in the trapezoidal steel plates, the special embedded parts are embedded into the precast concrete plates in pairs in a staggered mode, and reinforcements in the plates penetrate through the reinforcement penetrating holes;
the precast concrete plate is poured and formed, and the foam of the cylinder is damaged to form an inclined hole;
the assembling screw drills into the wood beam along the inclined hole and the inclined steel sleeve, and the screw is assembled with a countersunk head; the inclined holes are filled by adopting quick-hardening low-shrinkage cement mortar.
2. A prefabricated wood-concrete composite structural connecting system according to claim 1, wherein: the inner diameter of the inclined steel sleeve is 1mm larger than the diameter of the assembling screw.
3. A prefabricated wood-concrete composite structural connecting system according to claim 1, wherein: the length of the smooth round part of the assembling screw is more than or equal to that of the inclined steel sleeve, and the smooth round part of the assembling screw is an internal and external hexagon head screw or a self-tapping screw.
4. A prefabricated wood-concrete composite structural connecting system according to claim 1, wherein: the diameter of the hole formed by the cylindrical foam should be larger than the outer diameter of a drilling wrench used for assembling the corresponding screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635083.6U CN211037485U (en) | 2019-09-27 | 2019-09-27 | Connecting system of prefabricated wood-concrete combined structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635083.6U CN211037485U (en) | 2019-09-27 | 2019-09-27 | Connecting system of prefabricated wood-concrete combined structure |
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| Publication Number | Publication Date |
|---|---|
| CN211037485U true CN211037485U (en) | 2020-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921635083.6U Active CN211037485U (en) | 2019-09-27 | 2019-09-27 | Connecting system of prefabricated wood-concrete combined structure |
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| Country | Link |
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| CN (1) | CN211037485U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565860A (en) * | 2019-09-27 | 2019-12-13 | 南京工业大学 | connecting system of prefabricated wood-concrete combined structure |
| CN114658109A (en) * | 2022-03-11 | 2022-06-24 | 大连理工大学 | Composite shear connector for assembled wood-concrete combined structure |
-
2019
- 2019-09-27 CN CN201921635083.6U patent/CN211037485U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565860A (en) * | 2019-09-27 | 2019-12-13 | 南京工业大学 | connecting system of prefabricated wood-concrete combined structure |
| CN110565860B (en) * | 2019-09-27 | 2024-02-06 | 南京工业大学 | Connecting system of prefabricated assembled wood-concrete combined structure |
| CN114658109A (en) * | 2022-03-11 | 2022-06-24 | 大连理工大学 | Composite shear connector for assembled wood-concrete combined structure |
| CN114658109B (en) * | 2022-03-11 | 2022-11-18 | 大连理工大学 | Composite shear connector for assembled wood-concrete composite structure |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NANJING GONGDA WOOD STRUCTURE TECHNOLOGY CO.,LTD. Assignor: Nanjing Tech University Contract record no.: X2023320000244 Denomination of utility model: A Connection System for Prefabricated Wood-concrete Composite Structures Granted publication date: 20200717 License type: Common License Record date: 20231130 |