CN211548062U - Gymnasium based on high-order hyperstatic double-layer net rack and cable dome combined structure - Google Patents
Gymnasium based on high-order hyperstatic double-layer net rack and cable dome combined structure Download PDFInfo
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- CN211548062U CN211548062U CN201922151197.XU CN201922151197U CN211548062U CN 211548062 U CN211548062 U CN 211548062U CN 201922151197 U CN201922151197 U CN 201922151197U CN 211548062 U CN211548062 U CN 211548062U
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Abstract
The utility model discloses a gymnasium based on a high-order hyperstatic double-layer net rack and cable dome combined structure, which comprises a peripheral high-order hyperstatic double-layer net rack structure, a cable dome structure and a plurality of connecting components; the peripheral high-order hyperstatic double-layer grid structure comprises a bearing pier, a bearing column, a stay bar, a truss rod, an upper chord, a lower chord and an inclined web member, and is fixedly connected with a foundation in a peripheral supporting mode to provide necessary constraint force and rigidity to balance huge tension force generated by the cable dome structure roof; the cable dome structure comprises an upper chord ridge cable, a lower chord inclined cable, an inner pull steel ring, a pressure lever and a central pull-receiving ring, and forms a self-supporting and self-stress space balance structure system; the outer ends of an upper chord ridge cable and a lower chord inclined cable on the periphery in the cable dome structure are respectively fixed on a peripheral high-order hyperstatic double-layer grid structure through connecting members, and an inner pull steel ring, a pressure bar and a central pull-receiving ring in the cable dome structure fix the overall shape of the cable dome structure. The utility model discloses realize the inside atress self-balancing of structural system.
Description
Technical Field
The utility model relates to a building structure field, concretely relates to gymnasium based on double-deck rack of high order hyperstatic and cable dome integrated configuration.
Background
The 21 st century is an era of creating comfortable, clean and energy-saving novel cities for human beings, and the closed city environment with modern equipment and artificial intelligence provides an ideal living environment which is harmonious with nature for people, even creates a larger dome space, and embodies an ideal future city integrating working, living and entertainment.
With the continuous development of building science and technology, the requirement of large-span space in the current society prompts expert scholars to deeply research what structural system can meet the requirements of building plane, space and shape, can also meet the requirement of spanning enough large span and has better technical and economic indexes, so that a new structural system combining the cable dome and the hyperstatic double-layer net rack is necessarily developed further.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a gymnasium based on double-deck rack of high order hyperstatic and cable dome integrated configuration, its whole atress is balanced, has realized the inside atress self-balancing of structural system.
In order to solve the technical problem, the utility model discloses take following technical scheme: the utility model discloses a gymnasium based on double-deck rack of high order hyperstatic and cable dome integrated configuration, its innovation point lies in: the cable dome structure comprises a peripheral high-order hyperstatic double-layer grid structure, a cable dome structure and a plurality of connecting members; the peripheral high-order hyperstatic double-layer grid structure comprises a bearing pier, a bearing column, a stay bar, a truss rod, an upper chord, a lower chord and an inclined web member, and is fixedly connected with a foundation in a peripheral supporting mode to provide necessary constraint force and rigidity to balance huge tension force generated by the cable dome structure roof; the cable dome structure comprises an upper chord ridge cable, a lower chord inclined cable, an inner pull steel ring, a pressure lever and a central pull ring, and forms a self-supporting and self-stress space balance structure system; the outer ends of an upper chord ridge cable and a lower chord inclined cable on the periphery in the cable dome structure are respectively fixed on the peripheral high-order hyperstatic double-layer grid structure through connecting members, and an inner pull steel ring, a compression bar and a central pull-receiving ring in the cable dome structure fix the overall shape of the cable dome structure; the cable dome structure adopts a sunflower-shaped cable dome structure, and a central pull-receiving ring is adopted in the middle; the gymnasium is a partially sunken gymnasium, and a peripheral supported peripheral high-order hyperstatic double-layer grid structure is combined with a foundation to form a large rigid structure; and laying a layer of film structure on the cable dome structure.
Preferably, the film structure on the cable dome structure is made of an ETFE transparent film material.
Preferably, the interior of the gymnasium building is a large-span structure without supporting columns.
Preferably, a plurality of compression bars are uniformly and vertically arranged on the outer circumferential wall of each inner pull steel ring along the circumferential direction of the inner pull steel ring, the lower end of each compression bar is rigidly connected and fixed with the corresponding inner pull steel ring, and a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each compression bar in a penetrating manner; the upper chord ridge cables of the cable dome structure are hinged with the upper end through holes corresponding to the compression rods, and the lower chord inclined cables of the cable dome structure are wound at the joints corresponding to the compression rods and the inner pull steel rings.
Preferably, the joints of the upper chord ridge cable and the lower chord stay cable of the cable dome structure are connected in a hinged mode.
Preferably, a plurality of small cylinders are uniformly and vertically arranged on the outer circumferential wall of the central pull-receiving ring along the circumferential direction, the lower end of each small cylinder is rigidly connected and fixed with the central pull-receiving ring, and a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each small cylinder in a penetrating manner; and the upper chord ridge cables at the top of the cable dome are hinged with the upper end through holes corresponding to the small cylinders.
Preferably, the inner pull steel ring, the compression bar and the central pull receiving ring of the cable dome structure are all rigid members.
Preferably, each connecting member is of a rod-shaped structure, a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each connecting member in a penetrating mode, and an external thread is arranged on the outer circumferential wall of the lower end of each connecting member; the upper end of each connecting component is hinged with the upper chord ridge cable and the lower chord inclined cable through hole on the periphery of the cable dome structure, and the lower end of each connecting component is fixed with the truss rod of the peripheral high-order hyperstatic double-layer grid structure in a screwed mode.
Preferably, the peripheral high-order hyperstatic double-layer grid structure is supported by 12 bearing columns, 24 support rods are arranged among the columns, and the nodes adopt a rigid connection mode.
The utility model has the advantages that:
(1) the cable dome structure in the utility model stretches and bears the dead weight load of the pressure rod, the steel ring and the cable after applying the prestress, and generates the annular stretching effect on the high-order hyperstatic double-layer grid structure; the self-weight of the building is greatly reduced by adopting a cable dome structure, and meanwhile, the interior of the cable dome structure can be free of supporting columns and has large space span.
(2) The utility model discloses well high hyperstatic double-deck spatial grid structure concreties with the form and the basis of peripheral supporting, has not only increased upper portion cable dome structure's rigidity, produces the restrictive force to upper portion cable dome structure moreover for balanced last chord cable or lower chord stay are to the pulling force that high hyperstatic double-deck spatial grid structure top truss rod received.
(3) The utility model adopts the combination of the cable dome structure and the high-order hyperstatic double-layer grid structure, the whole stress is balanced, and the self-balance of the internal stress of the structural system is realized; in form, the gym is a large-span spatial structure; functionally, the system can utilize the effective space to the maximum extent, can meet the requirements of a gymnasium on the number of people accommodated, and can provide an ideal living environment which is harmonious with the nature for people on the basis of the effective space, and even create an ideal future city which embodies the integration of work, residence and entertainment.
(4) The utility model discloses the structural membrane structure of cable dome adopts lays ETFE transparent film material, and the daylighting of being convenient for satisfies energy-concerving and environment-protective requirement simultaneously.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is the utility model relates to a structural schematic diagram of gymnasium based on double-deck rack of high order hyperstatic and cable dome integrated configuration.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a schematic structural view of the cable dome structure of fig. 1.
Fig. 5 is a schematic structural view of the statically indeterminate double-layer lattice structure of fig. 1.
Fig. 6 is a schematic connection diagram of a portion of the connection member of fig. 1.
Fig. 7 is a structural view of the connection member of fig. 6.
Wherein, 1-a connecting member; 2-bearing piers; 3-a heel post; 4-a brace bar; 5-truss rod; 6-upper chord spinal cord; 7-lower chord stay cable; 8-pulling the steel ring inwards; 9-a pressure bar; 10-a central pull tab; 11-upper chord; 12-a lower chord; 13-diagonal web member.
Detailed Description
The technical solution of the present invention will be described clearly and completely through the following detailed description.
The utility model discloses a gymnasium based on a high-order hyperstatic double-layer net rack and cable dome combined structure, which comprises a peripheral high-order hyperstatic double-layer net rack structure, a cable dome structure and a plurality of connecting components 1; the specific structure is shown in fig. 1-5, the peripheral high-order hyperstatic double-layer grid structure comprises a bearing pier 2, a bearing column 3, a support rod 4, a truss rod 5, an upper chord 11, a lower chord 12 and a diagonal web member 13, and is fixedly connected with a foundation in a peripheral supporting mode, the peripheral high-order hyperstatic double-layer grid structure is uniformly stressed, the spatial rigidity is large, and necessary constraint force and rigidity are provided to balance huge tensile force generated by a cable dome structure roof; wherein, the nodes of the upper chord 11, the lower chord 12 and the inclined web member 13 are all connected by bolts and balls.
The utility model discloses a middle cable dome structure comprises an upper chord ridge cable 6, a lower chord inclined cable 7, an inner pull steel ring 8, a pressure bar 9 and a central pull receiving ring 10, and forms a self-supporting and self-stressed space balance structure system, and the rigidity of the structure is provided by the balance prestress between the stay cable and the pressed unit; as shown in fig. 1-5, a cable dome structure of a gymnasium adopts a high-strength steel cable, and a film structure is laid on the cable dome structure; wherein, the film structure on the cable dome structure adopts and lays ETFE transparent film material, can reach the effect of keeping apart interior outer boundary space, and simultaneously, this material is transparent film material, can reach daylighting effect to furthest to practice thrift the environmental protection, accord with the green development theory of future building. The utility model discloses well cable dome structure is the self-stress space structure system that comprises cable, pole and membrane, and it is reasonable to be a atress, the extremely high structural style of efficiency.
The outer ends of an upper chord ridge cable 6 and a lower chord oblique cable 7 on the periphery in the cable dome structure are respectively fixed on a peripheral high-order hyperstatic double-layer grid structure through a connecting member 1, and an inner pull steel ring 8, a compression bar 9 and a central pull ring 10 in the cable dome structure provide necessary prestress so as to generate corresponding rigidity to fix the overall shape of the cable dome structure; as shown in fig. 1 to 5, after applying prestress, the cable body in the cable dome structure becomes a full tension state, so that the pressure lever 9 becomes an island in the sea, and meanwhile, the peripheral statically indeterminate double-layer grid structure provides huge constraint force to balance the tension of the stay cable, thereby realizing the balance of the whole structure;
each connecting member 1 is of a rod-shaped structure, a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each connecting member in a penetrating mode, and an external thread is arranged on the outer circumferential wall of the lower end of each connecting member 1; as shown in fig. 6 and 7, the upper end of each connecting member 1 is in through-hole hinged connection with an upper chord ridge cable 6 and a lower chord oblique cable 7 on the periphery in the cable dome structure, and the lower end thereof is in threaded connection with a truss rod 5 in the peripheral high-order hyperstatic double-layer grid structure.
The cable dome structure adopts a sunflower-shaped cable dome structure, and the middle part of the cable dome structure adopts a central pull-off ring 10; the sunflower-shaped cable dome structure can effectively limit horizontal displacement in a tensioning mode, the effect of resisting wind load is obvious, and meanwhile, the upper layer of stay cable and the lower layer of stay cable can ensure that the lifted roof load is borne, so that the roof is prevented from sinking; the central pull ring 10 bears the pulling force of the cable body in a centralized manner, so that the balance of the whole cable dome structure in stress is achieved.
As shown in fig. 1 to 5, the gymnasium is a partially sunken gymnasium, and a peripheral supporting type peripheral high-order hyperstatic double-layer grid structure is combined with a foundation to form a large rigid structure; the underground part can be fully utilized to build an underground parking lot, so that the floor area of the ground is reduced, and the environment is saved.
The utility model is also provided with a plurality of compression bars 9 vertically and evenly along the circumferential direction on the outer circumferential wall of each inner pull steel ring 8, the lower end of each compression bar 9 is fixedly connected with the corresponding inner pull steel ring 8, and the outer circumferential wall at the upper end of the compression bar is also vertically provided with reserved holes in a penetrating way; the upper chord ridge cables 6 of the cable dome structure are hinged with the upper end through holes of the corresponding pressure rods 9, and the lower chord inclined cables 7 of the cable dome structure are wound at the joints of the corresponding pressure rods 9 and the inner pull steel rings 8; as shown in fig. 1 to 5, a plurality of small cylinders are uniformly and vertically arranged on the outer circumferential wall of the central pull-receiving ring 10 along the circumferential direction thereof, the lower end of each small cylinder is rigidly connected and fixed with the central pull-receiving ring 10, and the outer circumferential wall of the upper end thereof is vertically provided with a reserved hole in a penetrating manner; the upper chord ridge cables 6 at the top of the cable dome are all hinged with the upper end through holes of the corresponding small cylinders. The joints of an upper chord ridge cable 6 and a lower chord inclined cable 7 of the cable dome structure are connected in a hinged mode, the position of the stay cable can be adjusted according to the actual construction level during construction, and the node is fastened to apply prestress on the cable body. The utility model discloses cable dome structure's interior steel ring 8, depression bar 9 and center receive pull ring 10 all to adopt the rigid member, and the deformation that the rigid ring roof beam produced in can effectively resisting cable dome structure, and simultaneously, the rigid ring roof beam also easily confirms the position of depression bar in the cable dome structure when the construction to reduce the construction degree of difficulty.
This gymnasium building is the large-span spatial structure of inside no support column, can effectively solve the problem that ordinary long-span building needs many inside heel posts, reaches the effect in release space, and is particularly great to the gymnasium effect.
The stadium adopts the combination of a peripheral high-order hyperstatic double-layer grid structure and a cable dome structure, so that the self weight of the upper structure can be greatly reduced, and the influence of external loads such as earthquake, wind load and the like on the structure can be effectively reduced under the action of two phases, so that the earthquake-proof purpose is achieved; the form structure of the rope is similar to a lotus flower, and meanwhile, the stay rope forms a stable triangle and has both mechanics and aesthetic principles.
The outer ends of an upper chord ridge cable 6 and a lower chord inclined cable 7 on the periphery in the cable dome structure are fixed on a peripheral high-order hyperstatic double-layer grid structure, and after prestress is applied to a cable body, tension for restraining a cable is generated inside the peripheral high-order hyperstatic double-layer grid structure, so that the balance of the whole structure is realized; and the peripheral high-order hyperstatic double-layer grid structure is fixedly connected with the foundation, so that necessary constraint force is provided to balance the huge tension generated by the cable dome structure roof. The combination of the two guarantees the reasonability of the demand and the structural stress of the internal space of the building, thereby realizing the requirements of self weight reduction of the building roof, no column in the building and large span of the space.
During construction, the inner pull steel ring 8, the compression bar 9 and the central pull receiving ring 10 can be processed into an assembled part, then the assembled part is tensioned by using the inhaul cable and is stacked according to layers, and the construction difficulty and period of the cable dome structure are greatly reduced by the scheme.
The utility model discloses the high hyperstatic double-deck spatial grid structure of well periphery is supported by 12 heel posts 3, is equipped with 24 vaulting poles 4 between the post, and the node adopts the connected mode of rigid coupling, constitutes peripheral hyperstatic system with bearing mound 2, truss rod 5, when undertaking the tensile of cable dome structure part, has effectively reduced the effect of outer load effect.
The principle of the utility model is as follows: after the cable dome structure applies prestress, the structure obtains enough rigidity from the prestress to form a reference state of the structure; the double-layer tensioning integral structure comprises a rigid-connected inner-pulling steel ring 8 and a compression bar 9, wherein the compression bar 9 is limited between the inhaul cable and the steel ring, and the compression bar 9 is relatively short and is rigidly connected to the inner-pulling steel ring 8, so that the problems of instability and collision of a rod piece are avoided; meanwhile, the inner pull steel ring 8 and the pressure lever 9 are rigidly connected, so that the lateral stability problem of the pressure lever can be solved only by a single-layer ring; the double-layer grid structure is a three-dimensional stressed space truss structure and has higher safety reserve; finally, the purposes of large space span, light dead weight, reasonable stress, shock absorption and shock resistance are achieved.
The utility model has the advantages that:
(1) the cable dome structure in the utility model stretches and bears the dead weight load of the pressure rod, the steel ring and the cable after applying the prestress, and generates the annular stretching effect on the high-order hyperstatic double-layer grid structure; the self-weight of the building is greatly reduced by adopting a cable dome structure, and meanwhile, the interior of the cable dome structure can be free of supporting columns and has large space span.
(2) The utility model discloses well high hyperstatic double-deck spatial grid structure concreties with the form and the basis of peripheral supporting, has not only increased upper portion cable dome structure's rigidity, produces the restrictive force to upper portion cable dome structure moreover for balanced last chord 6 or lower chord 7 stay cables are to the pulling force that high hyperstatic double-deck spatial grid structure top truss pole 5 received.
(3) The utility model adopts the combination of the cable dome structure and the high-order hyperstatic double-layer grid structure, the whole stress is balanced, and the self-balance of the internal stress of the structural system is realized; in form, the gym is a large-span spatial structure; functionally, the system can utilize the effective space to the maximum extent, can meet the requirements of a gymnasium on the number of people accommodated, and can provide an ideal living environment which is harmonious with the nature for people on the basis of the effective space, and even create an ideal future city which embodies the integration of work, residence and entertainment.
(4) The utility model discloses the structural membrane structure of cable dome adopts lays ETFE transparent film material, and the daylighting of being convenient for satisfies energy-concerving and environment-protective requirement simultaneously.
The above-mentioned embodiments are only described as the preferred embodiments of the present invention, and are not intended to limit the concept and scope of the present invention, and the technical content of the present invention, which is claimed by the present invention, is fully recorded in the technical claims.
Claims (9)
1. The utility model provides a gymnasium based on double-deck rack of high order hyperstatic and cable dome integrated configuration which characterized in that: the cable dome structure comprises a peripheral high-order hyperstatic double-layer grid structure, a cable dome structure and a plurality of connecting members; the peripheral high-order hyperstatic double-layer grid structure comprises a bearing pier, a bearing column, a stay bar, a truss rod, an upper chord, a lower chord and an inclined web member, and is fixedly connected with a foundation in a peripheral supporting mode to provide necessary constraint force and rigidity to balance huge tension force generated by the cable dome structure roof; the cable dome structure comprises an upper chord ridge cable, a lower chord inclined cable, an inner pull steel ring, a pressure lever and a central pull ring, and forms a self-supporting and self-stress space balance structure system; the outer ends of an upper chord ridge cable and a lower chord inclined cable on the periphery in the cable dome structure are respectively fixed on the peripheral high-order hyperstatic double-layer grid structure through connecting members, and an inner pull steel ring, a compression bar and a central pull-receiving ring in the cable dome structure fix the overall shape of the cable dome structure; the cable dome structure adopts a sunflower-shaped cable dome structure, and a central pull-receiving ring is adopted in the middle; the gymnasium is a partially sunken gymnasium, and a peripheral supported peripheral high-order hyperstatic double-layer grid structure is combined with a foundation to form a large rigid structure; and laying a layer of film structure on the cable dome structure.
2. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 1, wherein: and the film structure on the cable dome structure is formed by paving an ETFE transparent film material.
3. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 1, wherein: the inside of the gymnasium building is a large-span structure without support columns.
4. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 1, wherein: a plurality of pressure bars are uniformly and vertically arranged on the outer circumferential wall of each inner pull steel ring along the circumferential direction of the inner pull steel ring, the lower end of each pressure bar is rigidly connected and fixed with the corresponding inner pull steel ring, and a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each pressure bar in a penetrating manner; the upper chord ridge cables of the cable dome structure are hinged with the upper end through holes corresponding to the compression rods, and the lower chord inclined cables of the cable dome structure are wound at the joints corresponding to the compression rods and the inner pull steel rings.
5. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 4, wherein: the joints of the upper chord ridge cable and the lower chord oblique cable of the cable dome structure are connected in a hinged mode.
6. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 4, wherein: a plurality of small cylinders are uniformly and vertically arranged on the outer circumferential wall of the central pull-receiving ring along the circumferential direction, the lower end of each small cylinder is rigidly connected and fixed with the central pull-receiving ring, and a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each small cylinder in a penetrating manner; and the upper chord ridge cables at the top of the cable dome are hinged with the upper end through holes corresponding to the small cylinders.
7. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 1, wherein: the inner pull steel ring, the compression bar and the central pull ring of the cable dome structure are all rigid members.
8. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 1, wherein: each connecting member is of a rod-shaped structure, a reserved hole is vertically arranged on the outer circumferential wall of the upper end of each connecting member in a penetrating mode, and an external thread is arranged on the outer circumferential wall of the lower end of each connecting member; the upper end of each connecting component is hinged with the upper chord ridge cable and the lower chord inclined cable through hole on the periphery of the cable dome structure, and the lower end of each connecting component is fixed with the truss rod of the peripheral high-order hyperstatic double-layer grid structure in a screwed mode.
9. The gymnasium based on the high-order hyperstatic double-layer net rack and cable dome combined structure as recited in claim 1, wherein: the peripheral high-order hyperstatic double-layer grid structure is supported by 12 bearing columns, 24 supporting rods are arranged among the columns, and the nodes adopt a rigid connection mode.
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| CN201922151197.XU CN211548062U (en) | 2019-12-05 | 2019-12-05 | Gymnasium based on high-order hyperstatic double-layer net rack and cable dome combined structure |
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| CN201922151197.XU CN211548062U (en) | 2019-12-05 | 2019-12-05 | Gymnasium based on high-order hyperstatic double-layer net rack and cable dome combined structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047503A (en) * | 2021-03-25 | 2021-06-29 | 浙江东南网架股份有限公司 | Bifurcated column and curved surface grid integrated steel structure roof and mounting method thereof |
| CN113389277A (en) * | 2021-03-15 | 2021-09-14 | 中国水利水电第九工程局有限公司 | Roof construction method for building with double-layer steel structure grid composite membrane structure |
| CN114856068A (en) * | 2022-04-11 | 2022-08-05 | 浙江大学 | Cable dome structure adopting continuous ridge cables |
-
2019
- 2019-12-05 CN CN201922151197.XU patent/CN211548062U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113389277A (en) * | 2021-03-15 | 2021-09-14 | 中国水利水电第九工程局有限公司 | Roof construction method for building with double-layer steel structure grid composite membrane structure |
| CN113389277B (en) * | 2021-03-15 | 2023-07-11 | 中国水利水电第九工程局有限公司 | Construction method for building roof with double-layer steel structure net rack composite membrane structure |
| CN113047503A (en) * | 2021-03-25 | 2021-06-29 | 浙江东南网架股份有限公司 | Bifurcated column and curved surface grid integrated steel structure roof and mounting method thereof |
| CN114856068A (en) * | 2022-04-11 | 2022-08-05 | 浙江大学 | Cable dome structure adopting continuous ridge cables |
| CN114856068B (en) * | 2022-04-11 | 2023-02-03 | 浙江大学 | Cable dome structure adopting continuous ridge cables |
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Assignee: Nanjing University of Engineering Science Park Co.,Ltd. Assignor: NANJING INSTITUTE OF TECHNOLOGY Contract record no.: X2023980033985 Denomination of utility model: A Gymnasium Based on High Order Statically Indeterminate Double Layer Grid and Cable Dome Composite Structure Granted publication date: 20200922 License type: Common License Record date: 20230323 |
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