CN215107792U - Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node - Google Patents
Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node Download PDFInfo
- Publication number
- CN215107792U CN215107792U CN202121198791.5U CN202121198791U CN215107792U CN 215107792 U CN215107792 U CN 215107792U CN 202121198791 U CN202121198791 U CN 202121198791U CN 215107792 U CN215107792 U CN 215107792U
- Authority
- CN
- China
- Prior art keywords
- beam column
- cross
- tenon
- self
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model provides a beam column structure with cross make-up tenon formula power consumption beam column node, is including make-up tenon formula beam column node, upper beam column module and underbeam column module, wherein, the lower extreme center of upper beam column module and the upper end central symmetry of underbeam column module are formed with and can imbed the embedding mouth of make-up tenon formula beam column node, make-up tenon formula beam column node be the longitudinal symmetry structure, the superstructure embedding of make-up tenon formula beam column node is formed in the embedding mouth of upper beam column module lower extreme center, make the embedding of make-up tenon formula beam column node substructure form in the embedding mouth of underbeam column module upper end center to make upper beam column module and underbeam column module wholly constitute the beam column structure of outward appearance no junction node. The utility model provides a vertical power of node can effectively transmit and two-way horizontal force, has simple structure, simple to operate, and anti-seismic performance is good, the characteristics that the junction node is hidden.
Description
Technical Field
The utility model relates to an assembled beam column node. In particular to a beam column structure with cross buckling tenon type energy dissipation beam column nodes.
Background
Fabricated buildings refer to buildings constructed from prefabricated parts by means of a secure connection. The assembled structure has the advantages of low energy consumption, easily controlled quality, high construction speed, good construction site environment, less shrinkage cracks and the like, is one of important development directions of the current domestic and foreign building structures, is favorable for the industrialized development of the buildings in China and the improvement of the production efficiency, and reduces the building waste to a great extent. The assembly type building can be produced in batch due to the components, and has the advantages of high quality, short construction period, environmental protection, low energy consumption and the like, so that the assembly type building can be rapidly developed all over the world. In the assembly type concrete frame structure, a beam-column joint is taken as the most critical structural part in the structure, the beam-column joint can realize the functions of distributing internal force, transmitting bending moment and ensuring good structural integrity in the frame, and the beam-column joint is safe and reliable and is vital to the normal use and the anti-seismic performance of the whole building. The connecting node of the 'eight-column sixteen-beam' appears at the middle node of the module building, and the connecting position is connected with the node without a welded space, so that the force transfer is simple, firm and reliable, and the anti-seismic performance is good, thus the problem to be solved urgently is solved.
The tenon-and-mortise structure consists of tenon and mortise and is an important characteristic of ancient Chinese buildings. The horizontal load bearing device can bear larger horizontal load, and can absorb part of seismic energy under the action of an earthquake due to the allowance of certain deformation, so that the seismic response of the structure is reduced. Connect firm stable through auto-lock structural design, the on-the-spot installation of being convenient for, later stage replacement is maintained and is realized easily. Rubber energy dissipation materials are added into the assembled nodes, so that the assembled nodes have good hysteresis energy dissipation characteristics. The rubber can consume and absorb seismic energy, reduce the seismic response of the structure and improve the seismic performance of the node; the steel plate and the rubber are overlapped, so that the node strength can be improved, and the stability of the node is guaranteed.
Disclosure of Invention
The utility model aims to solve the technical problem that a beam column structure that has cross butt joint tenon formula power consumption beam column node that joint strength is high, anti-seismic performance is good is provided.
The utility model adopts the technical proposal that: a beam column structure with cross buckling tenon type energy dissipation beam column nodes comprises buckling tenon type beam column nodes, an upper beam column module and a lower beam column module, wherein embedding openings capable of being embedded into the buckling tenon type beam column nodes are symmetrically formed in the centers of the lower ends of the upper beam column module and the lower ends of the lower beam column module, the buckling tenon type beam column nodes are of vertically symmetrical structures, the upper structures of the buckling tenon type beam column nodes are embedded into the embedding openings in the centers of the lower ends of the upper beam column module, the lower structures of the buckling tenon type beam column nodes are embedded into the embedding openings in the centers of the upper ends of the lower beam column module, so that the upper beam column module and the lower beam column module integrally form the beam column structure without joints, the upper beam column module and the lower beam column module are identical in structure and are formed by butting four beam column structures with the same structure, each beam column structure comprises a square tubular column and two square tubular beams, two adjacent edges of one port of the square tubular column are fixedly connected with one edge of one port of the two square tubular beams through welding respectively, and the adjacent edges of the ports of the two square tubular beams are fixedly connected through welding, so that the square tubular column and the two square tubular beams mutually form a 90-degree right-angle connecting structure.
The utility model discloses a beam column structure with cross left-hand thread buckle tenon formula power consumption beam column node, each component of component node all can accomplish at the prefabricated processing of mill, and the site operation mainly uses the equipment as leading, and the construction degree of difficulty is little fast, and construction quality guarantees easily, and node anti-seismic performance is good, and structural safety is high. The utility model discloses a vertical power of node can effectively transmit and two-way horizontal force, has simple structure, simple to operate, and anti-seismic performance is good, the characteristics that the junction node is hidden.
Drawings
Fig. 1 is a schematic view of the overall structure of a beam-column structure with cross-shaped buckling tenon type energy dissipation beam-column nodes of the present invention;
fig. 2 is a schematic view of a split structure of a beam-column structure with cross-shaped buckling tenon type energy dissipation beam-column nodes of the present invention;
FIG. 3 is a schematic structural view of the middle beam column structure of the present invention;
fig. 4 is a schematic structural view of an upper beam column module or a lower beam column module according to the present invention;
FIG. 5 is a schematic view of the overall structure of the middle buckling tenon type beam-column joint of the present invention;
FIG. 6 is a schematic view of the overall structure of the self-locking tenon of the present invention;
FIG. 7 is a schematic structural view of an upper cross tenon or a lower cross tenon of the present invention;
FIG. 8 is a schematic structural view of a cross-shaped bracket according to the present invention;
FIG. 9 is a schematic structural view of the self-locking fastener of the present invention;
FIG. 10 is a schematic structural view of the self-locking mortise head of the present invention;
fig. 11 is a schematic structural view of a square sleeve according to the present invention;
fig. 12 is a schematic structural view of the self-locking mortise head arranged in the beam-column structure of the present invention;
fig. 13 is an exploded view of the combination of the upper beam column module and the lower beam column module with the self-locking tenon provided with the self-locking mortise in the utility model;
FIG. 14 is a schematic view of the locking tenon of FIG. 13 partially inserted into the lower beam-column module;
fig. 15 is a beam column schematic diagram of the beam column structure with the cross-shaped opposite buckling tenon type energy dissipation beam column node.
In the drawings
1: buckling tenon type beam column node 1.1: self-locking tenon
1.1.1: supporting the connecting plate 1.1.2: upper cross tenon
1.1.3: lower cross tenon 1.1.4: first step-shaped structure
1.2: go up auto-lock fourth of twelve earthly branches group 1.3: lower self-locking mortise assembly
1.4: self-locking mortise piece 1.4.1: self-locking mortise head
1.4.2: square sleeve 1 a: cross-shaped bracket
1 a.1: cross steel sheet 1 a.2: rubber jacket
1 b: right-angle tenon 2: upper beam column module
3: lower beam column module 4: beam column structure
4.1: square pipe column 4.2: square tubular beam
5: an embedding port c: mortise head bottom plate
d: head of mortise d 1: second step ladder structure
Detailed Description
The following description will be made in detail with reference to the embodiments and the accompanying drawings, wherein the beam column structure of the present invention has the cross-shaped buckling tenon type energy dissipation beam column node.
As shown in fig. 1, 2 and 4, the beam column structure with the cross buckling tenon type energy dissipation beam column node of the utility model comprises a buckling tenon type beam column node 1, an upper beam column module 2 and a lower beam column module 3, wherein, the center of the lower end of the upper beam column module 2 and the center of the upper end of the lower beam column module 3 are symmetrically provided with embedding openings 5 which can be embedded into the buckling tenon type beam column joint 1, the buckling tenon type beam-column joint 1 is of an up-and-down symmetrical structure, the upper structure of the buckling tenon type beam-column joint 1 is embedded into an embedding opening 5 formed in the center of the lower end of the upper beam-column module 2, the lower structure of the buckling tenon type beam-column joint 1 is embedded into an embedding opening 5 formed in the center of the upper end of the lower beam-column module 3, therefore, the upper beam-column module 2 and the lower beam-column module 3 integrally form a beam-column structure without connecting joint in appearance.
As shown in fig. 2 and 3, the upper beam-column module 2 and the lower beam-column module 3 have the same structure, and are formed by abutting four beam-column structures 4 having the same structure, each beam-column structure 4 includes a square pipe column 4.1 and two square pipe beams 4.2, two adjacent sides of a port of the square pipe column 4.1 are respectively fixedly connected with one side of a port of the two square pipe beams 4.2 by welding, and adjacent sides of the port of the two square pipe beams 4.2 are fixedly connected by welding, so that the square pipe column 4.1 and the two square pipe beams 4.2 form a 90-degree right-angle connection structure.
As shown in fig. 3 and 4, 4 vertical columns of an upper beam column module 2 or a lower beam column module 3 are jointly connected side by two square tubular columns 4.1 in the beam column structure 4, 8 square tubular beams 4.2 connected at the 4.1 port parts of the 4 square tubular columns respectively are jointly connected side by side to form a cross-shaped cross beam located at the end part of the vertical column, and the cross-shaped cross beam and the end surface center jointly formed by the vertical columns are provided with embedding ports 5 used for embedding the buckling tenon type beam column nodes 1.
As shown in fig. 5, the buckling tenon type beam-column joint 1 comprises: the self-locking mortise assembly comprises a self-locking tenon piece 1.1, an upper self-locking mortise assembly 1.2 and a lower self-locking mortise assembly 1.3, wherein the upper self-locking mortise assembly 1.2 is connected with the upper part of the self-locking tenon piece 1.1 in a buckling mode to form an upper structure of a buckling and tenon type beam-column node 1 embedded into an embedding hole 5 in the center of the lower end face of the upper beam-column module 2, and the lower self-locking mortise assembly 1.3 is connected with the lower part of the self-locking tenon piece 1.1 in a buckling mode to form a lower structure of the buckling and tenon type beam-column node 1 embedded into the embedding hole 5 in the center of the upper end face of the lower beam-column module 3.
As shown in fig. 6, the self-locking tenon 1.1 includes: supporting connection board 1.1.1, two liang fix side by side 4 on the supporting connection board 1.1.1 up end the same be used for with go up from the cross tenon 1.1.2 that the mortise group 1.2 carries out the buckle and connect to and two liang fix side by side 4 on the terminal surface under the supporting connection board 1.1.1.1 down the same be used for of structure with down from the mortise group 1.3 carry out the lower cross tenon 1.1.3 that the buckle is connected.
As shown in fig. 7, the upper cross tenon 1.1.2 and the lower cross tenon 1.1.3 have the same structure, and each of the upper cross tenon 1.1.2 and the lower cross tenon 1.1.3 comprises a cross support 1a and 4 right-angle tenons 1b which are respectively embedded and connected in 4 right-angle included angles of the cross support 1a and used for being buckled with the upper self-locking mortise group 1.2 or the lower self-locking mortise group 1.3.
As shown in fig. 8, the cross bracket 1a is composed of a cross thin steel plate 1a.1 and a rubber jacket 1a.2 wrapped outside the cross thin steel plate 1 a.1. The rubber jacket 1a.2 is wrapped outside the cross thin steel plate 1a.1 to prevent the cross thin steel plate 1a.1 from rusting. Sleeving a refined rubber outer sleeve 1a.2 on the outer side of a cross thin steel plate 1a.1 with double-sided glue coating, and vulcanizing, bonding and molding at high temperature to form a cross support 1 a; the requirements of the cross-shaped thin steel plate 1a.1 and the rubber outer sleeve 1a.2 on horizontal rigidity and deformation can be met by adjusting the thickness of the cross-shaped thin steel plate in engineering.
As shown in fig. 9, 10 and 11, the upper self-locking mortise group 1.2 and the lower self-locking mortise group 1.3 have the same structure, and are respectively composed of 4 self-locking mortise groups 1.4 which have the same structure and are used for being buckled with four upper cross-shaped tenons 1.1.2 or 4 lower cross-shaped tenons 1.1.3 in the self-locking tenon 1.1 correspondingly, each self-locking mortise group 1.4 is composed of a self-locking mortise 1.4.1 and a square sleeve 1.4.2 sleeved outside the self-locking mortise 1.4.1, and each self-locking mortise 1.4.1 is composed of a mortise bottom plate c and 4 tenons d which are fixedly arranged at four end angles on the upper end face of the mortise bottom plate c and are buckled with one upper cross-shaped tenon 1.1.2 or one lower cross-shaped tenon 1.1.3 in the self-locking mortise group 1.1; after the upper self-locking mortise group 1.2 and the lower self-locking mortise group 1.3 are correspondingly embedded into the embedding openings 5 formed in the upper beam column module 2 and the lower beam column module 3, the lower end surface of the mortise head bottom plate c is fixedly connected with the embedding openings 5 through welding.
As shown in fig. 7 and 10, the upper cross tenon 1.1.2 or the lower cross tenon 1.1.3 in the self-locking tenon 1.1 are formed with a first step-shaped structure 1.1.4 on the surface buckled with the mortise d, and the mortise d is formed with a second step-shaped structure d1 which can be mutually embedded into the first step-shaped structure 1.1.4 on the surface buckled with the cross tenon 1.1.2 or the lower cross tenon 1.1.3.
As shown in fig. 12, 13 and 14, in the assembly process of the upper beam-column module 2, the buckling tenon type beam-column node 1 and the lower beam-column module 3 on the construction site, firstly, the lower part of the buckling tenon type beam-column node 1 is inserted into the insertion opening 5 of the lower beam-column module 3, because the cross-shaped bracket 1a has certain compressibility, the lower part of the buckling tenon type beam-column node 1 can be extended inwards, after the lower part of the buckling tenon type beam-column node 1 is completely inserted into the insertion opening 5 of the lower beam-column module 3, the lower part of the buckling tenon type beam-column node 1 automatically resets, and at this time, the lower part of the buckling tenon type beam-column node 1 and the lower beam-column module 3 are automatically locked. Then, the upper beam-column module 2 is hoisted to the installation position, under the action of external force and gravity, the upper part of the buckling tenon type beam-column joint 1 is completely inserted into the embedding opening 5 of the upper beam-column module 2, and the upper beam-column module 2 is installed completely, as shown in fig. 1. As shown in fig. 14, for adopting the beam column structure with the cross-shaped buckling tenon type energy dissipation beam column node of the present invention.
Claims (8)
1. A beam column structure with cross buckling tenon type energy dissipation beam column nodes is characterized by comprising buckling tenon type beam column nodes (1), upper beam column modules (2) and lower beam column modules (3), wherein embedding openings (5) capable of being embedded into the buckling tenon type beam column nodes (1) are symmetrically formed in the centers of the lower ends of the upper beam column modules (2) and the upper ends of the lower beam column modules (3), the buckling tenon type beam column nodes (1) are of vertically symmetrical structures, the upper structures of the buckling tenon type beam column nodes (1) are embedded into the embedding openings (5) in the centers of the lower ends of the upper beam column modules (2), the lower structures of the buckling tenon type beam column nodes (1) are embedded into the embedding openings (5) in the centers of the upper ends of the lower beam column modules (3), and therefore the upper beam column modules (2) and the lower beam column modules (3) integrally form a beam column appearance structure without joints, the upper beam column module (2) and the lower beam column module (3) are identical in structure and are formed by butt joint of four beam column structures (4) identical in structure, each beam column structure (4) comprises a square pipe column (4.1) and two square pipe beams (4.2), two adjacent sides of one port of each square pipe column (4.1) are fixedly connected with one side of one port of each square pipe beam (4.2) through welding, and the adjacent sides of the ports of the two square pipe beams (4.2) are fixedly connected through welding, so that the square pipe column (4.1) and the two square pipe beams (4.2) form a 90-degree right-angle connecting structure mutually.
2. The beam column structure with cross buckling tenon type energy consumption beam column node as claimed in claim 1, wherein 4 square pipe columns (4.1) in the beam column structure (4) are connected two by two side to jointly form a vertical column of an upper beam column module (2) or a lower beam column module (3), 8 square pipe beams (4.2) connected respectively at the port parts of the 4 square pipe columns (4.1) are connected two by two side to jointly form a cross beam located at the end part of the vertical column, and the cross beam and the end surface center formed by the vertical columns jointly are formed with an embedding opening (5) for embedding the buckling tenon type beam column node (1).
3. The beam column structure with cross-shaped buckling tenon type energy dissipation beam column joint as claimed in claim 1, wherein the buckling tenon type beam column joint (1) comprises: self-locking tenon piece (1.1), go up self-locking mortise group (1.2) and self-locking mortise group down (1.3), go up self-locking mortise group (1.2) with the upper portion buckle of self-locking tenon piece (1.1) is connected, constitutes the embedding the superstructure of the lower terminal surface center of last beam column module (2) butt joint mortise type beam column node (1) in inlaying mouth (5), down self-locking mortise group (1.3) with the lower part buckle of self-locking tenon piece (1.1) is connected, constitutes the embedding the substructure of the butt joint mortise type beam column node (1) in the inlaying mouth (5) at the up end center of underbeam column module (3).
4. The beam column structure with cross-shaped buckling tenon type energy dissipation beam column joint as claimed in claim 3, wherein the self-locking tenon piece (1.1) comprises: supporting connection board (1.1.1), two liang fix side by side 4 on the up end of supporting connection board (1.1.1) the same be used for with go up last cross tenon (1.1.2) that self-locking mortise group (1.2) carry out the buckle and connect to and two liang fix side by side supporting connection board (1.1.1) with 4 on the terminal surface the same be used for with lower cross tenon (1.1.3) that self-locking mortise group (1.3) carried out the buckle and connect down.
5. The beam column structure with the cross-shaped buckling and tenon-clamping type energy dissipation beam column node as claimed in claim 4, wherein the upper cross-shaped tenon (1.1.2) and the lower cross-shaped tenon (1.1.3) have the same structure and comprise a cross-shaped bracket (1a) and 4 right-angled tenons (1b) which are respectively embedded and connected into 4 right-angled included angles of the cross-shaped bracket (1a) and used for being buckled with the upper self-locking mortise group (1.2) or the lower self-locking mortise group (1.3).
6. The beam-column structure with cross buckling mortise type energy dissipation beam-column node as claimed in claim 5, wherein the cross bracket (1a) is made of a cross steel sheet (1a.1) and a rubber outer cover (1a.2) wrapped outside the cross steel sheet (1 a.1).
7. The beam column structure with cross-shaped buckling tenon type energy dissipation beam column joint as claimed in claim 3, it is characterized in that the upper self-locking mortise group (1.2) and the lower self-locking mortise group (1.3) have the same structure and are respectively composed of 4 self-locking mortise components (1.4) which have the same structure and are used for being buckled with four upper crossed tenons (1.1.2) or 4 lower crossed tenons (1.1.3) in the self-locking tenon components (1.1), each self-locking mortise component (1.4) is composed of a self-locking mortise head (1.4.1) and a square sleeve (1.4.2) sleeved outside the self-locking mortise head (1.4.1), the self-locking mortise (1.4.1) is composed of a mortise bottom plate (c) and 4 mortises (d) which are fixedly arranged at four end angles on the upper end surface of the mortise bottom plate (c) and are used for being buckled with an upper cross-shaped tenon (1.1.2) or a lower cross-shaped tenon (1.1.3) in the self-locking tenon (1.1); after the upper self-locking mortise group (1.2) and the lower self-locking mortise group (1.3) are correspondingly embedded into the embedding openings (5) formed in the upper beam column module (2) and the lower beam column module (3), the lower end surface of the mortise head bottom plate (c) is fixedly connected with the embedding openings (5) through welding.
8. The beam column structure with the cross-shaped oppositely-buckled clamping-tenon type energy-consumption beam column node as claimed in claim 7, wherein the upper cross-shaped tenon (1.1.2) or the lower cross-shaped tenon (1.1.3) in the self-locking tenon piece (1.1) is provided with a first step-shaped structure (1.1.4) on the surface buckled with the mortise (d), and the mortise (d) is provided with a second step-shaped structure (d1) which can be mutually embedded and matched with the first step-shaped structure (1.1.4) on the surface buckled with the cross-shaped tenon (1.1.2) or the lower cross-shaped tenon (1.1.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121198791.5U CN215107792U (en) | 2021-05-31 | 2021-05-31 | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121198791.5U CN215107792U (en) | 2021-05-31 | 2021-05-31 | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215107792U true CN215107792U (en) | 2021-12-10 |
Family
ID=79301939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121198791.5U Active CN215107792U (en) | 2021-05-31 | 2021-05-31 | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215107792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323483A (en) * | 2021-05-31 | 2021-08-31 | 天津大学仁爱学院 | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node |
-
2021
- 2021-05-31 CN CN202121198791.5U patent/CN215107792U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323483A (en) * | 2021-05-31 | 2021-08-31 | 天津大学仁爱学院 | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206157897U (en) | Assembled steel construction of high -rise structure system | |
| CN112942573B (en) | Assembled beam-column node mortise-tenon structure and construction method | |
| CN215107792U (en) | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node | |
| CN213653755U (en) | Assembled beam column connected node based on anti special-shaped post of side of buckled plate | |
| CN215107791U (en) | Beam column structure with tenon fourth of twelve earthly branches buckle type power consumption beam column node | |
| CN112160419A (en) | Assembled beam column connected node based on anti special-shaped post of side of buckled plate | |
| KR20150055497A (en) | Modular unit having socket connector, Modular unit structure using the same and Construction method of modular unit structure | |
| CN209799071U (en) | Orthogonal laminated wood multi-plate shear wall capable of achieving self-resetting energy consumption | |
| CN113323483A (en) | Beam column structure with cross-shaped buckling tenon type energy dissipation beam column node | |
| CN111997234A (en) | Novel ALC plate steel structure antidetonation connected node | |
| CN111270763A (en) | Assembled concrete frame structure beam column with connected node | |
| CN203947591U (en) | A kind of steel structure connecting member | |
| CN216516134U (en) | Strong axle node structure of split bolt connection mortise-tenon joint formula steel-wood combination | |
| CN216740060U (en) | Container house built-up connection structure | |
| CN107558608B (en) | Lattice steel frame connecting node and construction method | |
| KR20130033151A (en) | The panel assembly for an outer wall of buildings | |
| CN215167479U (en) | Transition type external wall insulation board | |
| CN210529959U (en) | Column-beam connecting unit | |
| CN112302168A (en) | Assembled special-shaped column-beam connecting node | |
| CN202039454U (en) | Double-column type residential steel structure | |
| CN205171695U (en) | Tenon fourth of twelve earthly branches node of girder steel and concrete shear force wall | |
| CN215367773U (en) | Novel steel structure beam column connected node | |
| CN210562672U (en) | Column-beam connecting joint | |
| CN205530827U (en) | Light steel room overall structure | |
| CN113323487A (en) | Beam column structure with tenon fourth of twelve earthly branches buckle type power consumption beam column node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |