CN209817216U - Superimposed concrete bidirectional stress heat insulation roof tooth groove type prefabricated slab - Google Patents
Superimposed concrete bidirectional stress heat insulation roof tooth groove type prefabricated slab Download PDFInfo
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- CN209817216U CN209817216U CN201920121362.4U CN201920121362U CN209817216U CN 209817216 U CN209817216 U CN 209817216U CN 201920121362 U CN201920121362 U CN 201920121362U CN 209817216 U CN209817216 U CN 209817216U
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Abstract
The utility model relates to a two-way atress heat preservation roofing tooth groove formula prefabricated plate of coincide concrete belongs to building technical field. The superposed concrete tooth groove type prefabricated bottom layer and the double-sided tooth groove heat insulation board at the upper part are mutually occluded, and the two sides are provided with transverse connectors for bidirectional stress connection; and adopts a steel bar truss which is convenient to insert. The utility model discloses an effect and advantage need not special operation and can realize the two-way atress of superimposed sheet, the integral equipment in scene, and production simple process is favorable to mechanized, automatic, intelligent production. Convenient transportation and low cost. Not only has good economic benefit, but also has excellent stress performance. And the site operation is convenient, the construction period is short, the economic effect is good, the complex operation in the construction process is avoided, and the manufacturing cost is greatly reduced. More importantly, the double-faced toothed groove heat-insulation board and the superposed concrete toothed groove type prefabricated bottom layer can be integrally prefabricated, and bidirectional stress can be realized.
Description
Technical Field
The utility model belongs to the technical field of the building, especially, relate to a two-way atress of coincide concrete heat preservation roofing tooth slot type prefabricated plate.
Background
The composite floor slab is a better structural form combining prefabrication and cast-in-place concrete. The prefabricated prestressed thin plate (5-8 cm in thickness) and the upper cast-in-place concrete layer are combined into a whole and work together. The prestressed main reinforcement of the thin plate is the main reinforcement of the laminated floor slab, and the upper concrete cast-in-place layer is only provided with negative moment reinforcement and constructional reinforcement. The prestressed thin plate is used as a bottom die of a cast-in-place concrete layer, and a template does not need to be supported by the cast-in-place layer. The bottom surface of the thin plate is smooth and flat, and after plate seams are processed, the ceiling can not be plastered any more. The composite floor slab has the advantages of integrity, high rigidity, good crack resistance, no increase of reinforcing steel bar consumption, template saving and the like of a cast-in-place floor slab. Because the cast-in-place floor slab does not need to be provided with a formwork, and the large precast concrete partition boards can be simultaneously hoisted in the structural construction stage, the cast-in-place floor slab can be inserted into decoration engineering in advance, and the construction period of the whole engineering is shortened.
The floor slab has a span of less than 8 m, and can be widely used in various house construction projects such as hotels, office buildings, schools, houses, hospitals, warehouses, parking lots, multi-storey industrial plants and the like. The prestressed thin plates are different in structure according to the superposed surface and can be divided into three types: the laminated surface bears less shear stress, and the laminated surface is not provided with shear steel bars, but the upper surface of the concrete is required to be rough and scratched or some combination holes are reserved. Secondly, the shearing stress borne by the superposed surface is large, the surface of the thin plate needs to be additionally provided with shearing resistant steel bars besides rough roughening, and the diameter and the distance of the steel bars are determined by calculation. The shape of the reinforcing steel bar is wave shape, spiral shape and the shape of the triangular section formed by bending spot welding net sheets. And thirdly, the upper surface of the prefabricated thin plate is provided with a steel truss for enhancing the rigidity of the thin plate during construction and reducing the support erected below the thin plate.
The concrete composite floor slab is a part of a composite structure and is a structural form combining prefabrication and cast-in-place. In the construction process of the composite slab, a prefabricated bottom plate is firstly arranged at the bottom, the prefabricated bottom plate plays a role of a template when upper-layer concrete is poured, and then the two parts of concrete form a whole to bear load. The composite floor slab integrates the advantages of cast-in-place and prefabrication, and is a floor slab form with great development prospect.
1) From the aspect of stress, compared with a fully prefabricated assembled floor slab, the integral rigidity and the anti-seismic performance of the structure can be improved, and when the same prestressed tendons are configured, compared with the tensioned edge of the load action of the full section, the effective prestress built on the prefabricated section is larger, so that the anti-cracking performance of the structure is improved. On the premise of the same crack resistance, the using amount of the prestressed tendons can be saved.
2) From the manufacturing process, the main stressed part of the composite floor slab is manufactured in a factory, the mechanization degree is high, the quality is easy to guarantee, the production speed is high by adopting flow production, the composite floor slab can be manufactured in advance, the construction period is not occupied, and the template of the prefabricated part can be reused. The post-cast concrete takes the prefabricated bottom plate as a template, so that the workload of formwork support can be reduced compared with the full cast-in-place floor slab, the wet operation of a construction site is reduced, the condition of the construction site is improved, the construction efficiency is improved, the effect is more obvious especially under the condition of high-altitude operation or difficult formwork support, the factory prefabrication is easy to realize the manufacture of a more complex section form, and the post-cast concrete has obvious advantages of developing the bearing potential of a component and reducing the self weight of the structure. Meanwhile, the large-span laminated slab also conforms to the development direction of the building roof of the modern residence.
3) Long-term scientific experiments and engineering practice results show that the composite floor slab adopted in concrete structural engineering can obtain obvious benefits, and the using amount of the steel bars is greatly reduced when high-strength steel bars are adopted. When the hollow prefabricated section is adopted, the consumption of concrete can be saved, the construction period is correspondingly shortened, and the defects of the construction method are that the links of prefabricating, processing, transporting and hoisting are increased.
4) The section of the concrete composite floor slab consists of a prefabricated part and a cast-in-place part, and the common working performance of the prefabricated part and the cast-in-place part depends on the shearing resistance of a new superposed surface and an old superposed surface, so that the shearing resistance design of the superposed surfaces is an important part, the concrete composite floor slab has higher requirements on the construction technology content, and particularly, stricter requirements are provided for a use unit in the aspect of construction quality management.
SUMMERY OF THE UTILITY MODEL
The two-way plate of the concrete laminated slab has the problems that some problems are not effectively solved, and mechanical, automatic and intelligent production is difficult to realize when reinforcing steel bars of various forms are processed. Consequently in order to solve these technical problems, the utility model provides a two-way atress heat preservation roofing tooth slot type prefabricated plate of coincide concrete to fully embody the advantage of precast concrete assembly building. The bidirectional plate has high processing difficulty, high cost, difficult realization and low economy.
The utility model adopts the technical scheme as follows:
the superposed concrete two-way stressed heat-insulation roof tooth-groove type prefabricated slab comprises a superposed concrete tooth-groove type prefabricated bottom layer, a transverse connecting port, a double-sided tooth-groove heat-insulation board, a steel bar truss, a prefabricated slab bottom longitudinal steel bar and a prefabricated slab bottom transverse steel bar, wherein the bottom of the superposed concrete two-way stressed heat-insulation roof tooth-groove type prefabricated bottom layer is the superposed concrete tooth-groove type prefabricated bottom layer, the upper part of the superposed concrete tooth-groove type prefabricated bottom layer is the double-sided tooth groove heat-insulation board, concrete teeth, meshing grooves and bottom teeth at the lower part of the double-sided tooth-groove heat-insulation board are respectively matched one by one, the transverse two sides of the double-sided tooth-groove heat-insulation board extend to the concrete teeth at the outermost side of the superposed concrete tooth-groove type prefabricated bottom layer, the end part of the outermost end connecting notch at the outermost end part of the superposed concrete tooth-groove type prefabricated bottom layer is not provided with the double-sided tooth-groove heat-insulation board, notches formed at the two ends of the upper part of the superposed concrete tooth-groove type prefabricated bottom layer are transverse connecting port, the top teeth and the top grooves at the top of the double-groove type prefabricated bottom layer are alternated, rear U-shaped steel bars distributed longitudinally from the longitudinal grooves of the double-groove type prefabricated bottom layer, the longitudinal steel bar truss are respectively arranged at the vertical inner corner of the prefabricated bottom layer, the prefabricated bottom layer of the prefabricated bottom layer, the prefabricated bottom layer are uniformly distributed steel bar truss, the prefabricated bottom layer, the prefabricated bottom.
Furthermore, the superposed concrete tooth groove type prefabricated bottom layer comprises prefabricated layer plate bodies, concrete teeth, meshing grooves and end connecting notches, the prefabricated layer plate bodies are integrally rectangular concrete plates, the concrete teeth and the meshing grooves which are transversely and uniformly distributed and longitudinally alternate are arranged at the tops of the prefabricated layer plate bodies, the width of each meshing groove is 1.5 ~ 2 times that of each concrete tooth, the end connecting notches are respectively arranged on the outer sides of the two outermost concrete teeth, and the width of each end connecting notch is 1.8 ~ 3 times that of each concrete tooth.
The double-sided tooth socket heat insulation board comprises a heat insulation board body, top teeth, a top groove, bottom teeth and a bottom groove, the heat insulation board body is rectangular integrally, the upper portion of the heat insulation board body is provided with the longitudinal top teeth and the longitudinal top groove which are distributed transversely and uniformly and alternate with each other, the lower portion of the heat insulation board body is provided with the longitudinal bottom teeth and the longitudinal bottom groove which are distributed transversely and uniformly and alternate with each other, the top teeth are identical to the bottom teeth, the top groove is identical to the bottom groove, the width of the top teeth is 1.5 ~ 2 times of the width of the top groove, the transverse vertical center lines of the top teeth and the transverse vertical center lines of the bottom grooves coincide with each other.
Furthermore, the steel bar truss comprises a bottom layer longitudinal bar, a top longitudinal bar and a back-bending U-shaped bar, the whole back-bending U-shaped bar is U-shaped, and two ends of the back-bending U-shaped bar are bent inwards after penetrating through the double-sided tooth socket heat insulation board; the back-bent U-shaped ribs are uniformly and vertically distributed, and the top longitudinal ribs longitudinally penetrate through two inner corners of the tops of all the back-bent U-shaped ribs; the bottom layer longitudinal ribs longitudinally penetrate through two bent inner angles at the bottoms of all the back-bent U-shaped ribs.
The utility model has the advantages that:
the utility model discloses an effect and advantage need not special operation and can realize the two-way atress of superimposed sheet, the integral equipment in scene, and production simple process is favorable to mechanized, automatic, intelligent production. Convenient transportation and low cost. Not only has good economic benefit, but also has excellent stress performance. And the site operation is convenient, the construction period is short, the economic effect is good, the complex operation in the construction process is avoided, and the manufacturing cost is greatly reduced. More importantly, the double-faced toothed groove heat-insulation board and the superposed concrete toothed groove type prefabricated bottom layer can be integrally prefabricated, and bidirectional stress can be realized.
Drawings
FIG. 1 is a transverse end side view of the superposed concrete bidirectional stressed heat-insulating roof tooth-groove type precast slab.
FIG. 2 is a longitudinal end side view of the superposed concrete bidirectional stressed heat-insulating roof tooth-groove type precast slab.
FIG. 3 is a transverse end side view of the superposed concrete bidirectional stressed heat-insulating roof tooth-groove type precast slab.
Fig. 4 is a schematic transverse end view of a double-sided gullet insulation board.
Fig. 5 is a side view of a steel bar truss.
Fig. 6 is a front view of a steel bar truss.
In the figure, 1 is a superposed concrete tooth groove type prefabricated bottom layer; 2 is a transverse connecting port; 3, a double-sided tooth socket insulation board; 4 is a steel bar truss; 5, prefabricating the bottom longitudinal steel bar of the laminated board; 6, prefabricating a transverse reinforcing steel bar at the bottom of the laminated plate; 1-1 is a prefabricated laminated plate body; 1-2 are concrete teeth; 1-3 are occlusion grooves; 1-4 are end connection notches; 3-1 is a heat preservation plate body; 3-2 is a top tooth; 3-3 is a top groove; 3-4 are bottom teeth; 3-5 is a bottom groove; 4-1 is a bottom layer longitudinal rib; 4-2 is a top longitudinal bar; 4-3 are backward bending U-shaped ribs.
Detailed Description
For further explanation of the present invention, the following detailed description of the present invention is provided with reference to the drawings and examples, which should not be construed as limiting the scope of the present invention.
Example (b): as shown in fig. 1-6, the superposed concrete two-way stressed heat-preservation roof tooth-groove type prefabricated slab comprises a superposed concrete tooth-groove type prefabricated bottom layer 1, a transverse connecting port 2, a double-sided tooth-groove heat-preservation plate 3, a steel bar truss 4, a prefabricated slab bottom longitudinal steel bar 5 and a prefabricated slab bottom transverse steel bar 6, wherein the bottom of the superposed concrete two-way stressed heat-preservation roof tooth-groove type prefabricated slab is the superposed concrete tooth-groove type prefabricated bottom layer 1, the upper part of the superposed concrete tooth-groove type prefabricated bottom layer is the double-sided tooth-groove heat-preservation plate 3, concrete teeth 1-2 and meshing grooves 1-3 at the top of the superposed concrete tooth-groove type prefabricated bottom layer 1, bottom grooves 3-5 and bottom teeth 3-4 at;
the lateral two sides of the double-sided tooth socket heat insulation board 3 extend to concrete teeth 1-2 on the outermost side of the superposed concrete tooth socket type prefabricated bottom layer 1, the upper part of an end connecting notch 1-4 at the outermost end of the superposed concrete tooth socket type prefabricated bottom layer 1 is not provided with the double-sided tooth socket heat insulation board 3, notches formed at two ends of the upper part of the superposed concrete tooth socket type prefabricated bottom layer 1 are lateral connectors 2, top teeth 3-2 and top grooves 3-3 at the top of the double-sided tooth socket heat insulation board 3 are mutually alternated, the width of the top teeth 3-2 is 1.5 ~ 2 times of the width of the top grooves 3-3,
the back-bent U-shaped ribs 4-3 of a plurality of rows of longitudinally and uniformly distributed steel bar trusses 4 vertically penetrate through the double-sided tooth socket insulation board 3 from the top groove 3-3 at the top of the double-sided tooth socket insulation board 3 respectively, are bent at the middle layer of the superposed concrete tooth socket prefabricated bottom layer 1, are provided with bottom layer longitudinal ribs 4-1 at the bending part at the bottom and are provided with top longitudinal ribs 4-2 at two inner corners at the top; the steel bar truss 4 is transversely and uniformly distributed; a plurality of prefabricated floor bottom longitudinal reinforcements 5 are respectively arranged between the steel bar trusses 4 and in the superposed concrete tooth groove type prefabricated bottom layer 1 on the outer side of the steel bar trusses 4, and the prefabricated floor bottom longitudinal reinforcements 5 and the bottom longitudinal reinforcements 4-1 of the steel bar trusses 4 are at the same elevation and are transversely and uniformly distributed; and the bottom longitudinal steel bars 5 and the bottom longitudinal steel bars 4-1 of the prefabricated floor are provided with transverse steel bars 6 which are vertical to the longitudinal steel bars and are uniformly distributed at the bottom of the prefabricated floor in the longitudinal direction.
The superposed concrete tooth groove type prefabricated bottom layer 1 comprises prefabricated layer plate bodies 1-1, concrete teeth 1-2, meshing grooves 1-3 and end connecting notches 1-4, the whole prefabricated layer plate body 1-1 is a rectangular concrete slab, the top of the prefabricated layer plate body 1-1 is provided with the concrete teeth 1-2 and the meshing grooves 1-3 which are transversely and uniformly distributed and longitudinally alternate, the width of the meshing grooves 1-3 is 1.5 ~ 2 times of the width of the concrete teeth 1-2, the outer sides of the two outermost concrete teeth 1-2 are respectively provided with the end connecting notches 1-4, and the width of the end connecting notches 1-4 is 1.8 ~ 3 times of the width of the concrete teeth 1-2.
The double-sided tooth socket heat insulation plate 3 comprises a heat insulation plate body 3-1, top teeth 3-2, top grooves 3-3, bottom teeth 3-4 and bottom grooves 3-5, the heat insulation plate body 3-1 is integrally rectangular, the upper portion of the heat insulation plate body 3-1 is respectively provided with longitudinal top teeth 3-2 and top grooves 3-3 which are transversely uniformly distributed and mutually alternate, the lower portion of the heat insulation plate body 3-1 is respectively provided with longitudinal bottom teeth 3-4 and bottom grooves 3-5 which are transversely uniformly distributed and mutually alternate, the top teeth 3-2 are identical to the bottom teeth 3-4, the top grooves 3-3 are identical to the bottom grooves 3-5, the width of the top teeth 3-2 is 1.5 ~ 2 times of the width of the top grooves 3-3, the transverse vertical center lines of the top teeth 3-2 and the bottom grooves 3-5 are overlapped, and the transverse vertical center lines of the top grooves 3-3 and the bottom teeth 3-4 are overlapped.
The steel bar truss 4 comprises a bottom layer longitudinal rib 4-1, a top longitudinal rib 4-2 and a back-bent U-shaped rib 4-3, the whole back-bent U-shaped rib 4-3 is U-shaped, and two ends of the back-bent U-shaped rib are bent inwards after penetrating through the double-faced tooth socket heat insulation board 3; the back-bent U-shaped ribs 4-3 are uniformly and vertically distributed, and the top longitudinal ribs 4-2 longitudinally penetrate through two inner corners at the tops of all the back-bent U-shaped ribs 4-3; the bottom layer longitudinal ribs 4-1 longitudinally penetrate through two bent inner corners at the bottoms of all the back bent U-shaped ribs 4-3.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. Superimposed concrete two-way atress heat preservation roofing slot type prefabricated plate, including superimposed concrete slot type prefabricated bottom (1), transverse connection mouth (2), two-sided tooth's socket heated board (3), steel bar truss (4), vertical reinforcing bar (5) at the bottom of the prefabricated floor, transverse reinforcing bar (6) at the bottom of the prefabricated floor, its characterized in that:
the bottom of the superposed concrete bidirectional stress heat-insulation roof tooth-groove type prefabricated slab is a superposed concrete tooth-groove type prefabricated bottom layer (1), the upper part of the superposed concrete tooth-groove type prefabricated bottom layer is a double-sided tooth-groove heat-insulation board (3), and concrete teeth (1-2) and meshing grooves (1-3) at the top of the superposed concrete tooth-groove type prefabricated bottom layer (1) are respectively matched with bottom grooves (3-5) and bottom teeth (3-4) at the lower part of the double-sided tooth-groove heat-insulation board (3);
the transverse two sides of the double-sided tooth socket heat insulation plate (3) extend to concrete teeth (1-2) on the outermost side of the laminated concrete tooth socket type prefabricated bottom layer (1), the upper part of an end connecting notch (1-4) at the outermost end of the laminated concrete tooth socket type prefabricated bottom layer (1) is not provided with the double-sided tooth socket heat insulation plate (3), and notches formed at two ends of the upper part of the laminated concrete tooth socket type prefabricated bottom layer (1) are transverse connectors (2);
the top teeth (3-2) and the top grooves (3-3) at the top of the double-sided tooth socket heat insulation board (3) are mutually alternated, the width of the top teeth (3-2) is 1.5 ~ 2 times of the width of the top grooves (3-3),
the rear-bent U-shaped ribs (4-3) of a plurality of rows of longitudinally and uniformly distributed steel bar trusses (4) vertically penetrate through the double-sided tooth socket heat insulation plate (3) from the top groove (3-3) at the top of the double-sided tooth socket heat insulation plate (3), are bent at the middle layer of the laminated concrete tooth socket type prefabricated bottom layer (1), are provided with bottom layer longitudinal ribs (4-1) at the bent positions at the bottom, and are provided with top longitudinal ribs (4-2) at two inner corners at the top; the steel bar truss (4) is transversely and uniformly distributed;
a plurality of prefabricated floor bottom longitudinal reinforcements (5) are respectively arranged between the steel bar trusses (4) and in the superposed concrete tooth groove type prefabricated bottom layer (1) on the outer side of the steel bar trusses (4), and the prefabricated floor bottom longitudinal reinforcements (5) and the bottom longitudinal reinforcements (4-1) of the steel bar trusses (4) are at the same elevation and are transversely and uniformly distributed;
and the bottoms of the longitudinal steel bars (5) at the bottom of the prefabricated floor and the bottom longitudinal steel bars (4-1) are provided with transverse steel bars (6) at the bottom of the prefabricated floor, which are vertical to the longitudinal steel bars and are uniformly distributed in the longitudinal direction.
2. The superposed concrete two-way stressed heat-preservation roof tooth-groove type precast slab as claimed in claim 1 is characterized in that the superposed concrete tooth-groove type precast bottom layer (1) comprises precast slab bodies (1-1), concrete teeth (1-2), meshing grooves (1-3) and end connecting notches (1-4), the precast slab bodies (1-1) are integrally rectangular concrete slabs, the top of the precast slab bodies (1-1) is provided with the concrete teeth (1-2) and the meshing grooves (1-3) which are transversely and uniformly distributed and longitudinally and alternately, the width of the meshing grooves (1-3) is 1.5 ~ 2 times of the width of the concrete teeth (1-2), the outer sides of the two outermost concrete teeth (1-2) are respectively provided with the end connecting notches (1-4), and the width of the end connecting notches (1-4) is 1.8 ~ 3 times of the width of the concrete teeth (1-2).
3. The superposed concrete two-way stressed heat-insulation roof tooth groove type precast slab according to claim 1 is characterized in that the double-sided tooth groove heat-insulation slab (3) comprises a heat-insulation slab body (3-1), top teeth (3-2), a top groove (3-3), bottom teeth (3-4) and a bottom groove (3-5), the heat-insulation slab body (3-1) is integrally rectangular, the upper part of the heat-insulation slab body (3-1) is respectively provided with longitudinal top teeth (3-2) and top grooves (3-3) which are transversely and uniformly distributed and alternate with each other, the lower part of the heat-insulation slab body (3-1) is respectively provided with longitudinal bottom teeth (3-4) and bottom grooves (3-5) which are transversely and uniformly distributed and alternate with each other, the top teeth (3-2) are identical to the bottom teeth (3-4), the top grooves (3-3) are identical to the bottom grooves (3-5), the width of the top teeth (3-2) is 1.5 times of the width of the top grooves (3-3), the top teeth (3-2) and the bottom grooves (3-5), and the transverse center lines of the top teeth (3-4) are superposed with the vertical center lines of.
4. The superposed concrete two-way stressed heat-insulating roof tooth-groove type precast slab according to claim 1, is characterized in that: the steel bar truss (4) comprises a bottom layer longitudinal bar (4-1), a top longitudinal bar (4-2) and a back bending U-shaped bar (4-3), the back bending U-shaped bar (4-3) is integrally U-shaped, and two ends of the back bending U-shaped bar are bent inwards after passing through the double-sided tooth socket heat insulation board (3); the backward bent U-shaped ribs (4-3) are uniformly and vertically distributed, and the top longitudinal rib (4-2) longitudinally penetrates through two inner corners at the tops of all the backward bent U-shaped ribs (4-3); the bottom layer longitudinal ribs (4-1) longitudinally penetrate through two bent inner angles at the bottoms of all the back bent U-shaped ribs (4-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920121362.4U CN209817216U (en) | 2019-01-24 | 2019-01-24 | Superimposed concrete bidirectional stress heat insulation roof tooth groove type prefabricated slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920121362.4U CN209817216U (en) | 2019-01-24 | 2019-01-24 | Superimposed concrete bidirectional stress heat insulation roof tooth groove type prefabricated slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209817216U true CN209817216U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920121362.4U Expired - Fee Related CN209817216U (en) | 2019-01-24 | 2019-01-24 | Superimposed concrete bidirectional stress heat insulation roof tooth groove type prefabricated slab |
Country Status (1)
| Country | Link |
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| CN (1) | CN209817216U (en) |
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2019
- 2019-01-24 CN CN201920121362.4U patent/CN209817216U/en not_active Expired - Fee Related
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| TR01 | Transfer of patent right |
Effective date of registration: 20200818 Address after: 250000 No. 2016 Changxing Road, Nanyuan, Guidezhen Economic Development Zone, Changqing District, Jinan City, Shandong Province Patentee after: Shandong Huifu Construction Group Construction Industry Co.,Ltd. Address before: Hunnan Hunnan Road Shenyang city Liaoning province 110168 No. 9 Patentee before: SHENYANG JIANZHU University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 Termination date: 20210124 |
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| CF01 | Termination of patent right due to non-payment of annual fee |