CN209429643U - A kind of civil engineering antidetonation reinforcement structure - Google Patents
A kind of civil engineering antidetonation reinforcement structure Download PDFInfo
- Publication number
- CN209429643U CN209429643U CN201821972951.5U CN201821972951U CN209429643U CN 209429643 U CN209429643 U CN 209429643U CN 201821972951 U CN201821972951 U CN 201821972951U CN 209429643 U CN209429643 U CN 209429643U
- Authority
- CN
- China
- Prior art keywords
- multiple groups
- layer
- bottom plate
- groups
- pillar
- 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.)
- Expired - Fee Related
Links
Landscapes
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The utility model relates to the technical fields of civil engineering auxiliary equipment can be improved anti seismic efficiency more particularly to a kind of civil engineering antidetonation reinforcement structure, enhances multi-story masonry building shock resistance, meets multi-story masonry building shockproof requirements；Including four groups of structural slabs, bottom plate and multiple groups pillar, the bottom end of four groups of structural slabs is connect with the left side of bottom plate, right side, front side and rear side respectively, and multiple groups pillar is uniformly fixed to left side and rear side at the top of bottom plate from front to back；It further include multiple groups outer support bar, multiple groups crossbeam, multiple groups inner bracing piece, basal layer and body layer, structural slab of the bottom end of multiple groups outer support bar respectively with the structural slab positioned at left side with the junction of bottom plate left end and positioned at right side is connected with the junction of bottom plate right end, multiple groups outer support bar is sequentially arranged on bottom plate from front to back, and the top of multiple groups outer support bar is connect with the left side of multiple groups pillar and the right side of the multiple groups pillar on the right side of bottom plate being located on the left of bottom plate respectively.
Description
Technical field
The utility model relates to the technical fields of civil engineering auxiliary equipment, add more particularly to a kind of civil engineering antidetonation
Strong structure.
Background technique
It is well known that when civil engineering anti-seismic structure is a kind of construction for multi-story masonry building, it is anti-for house foundation
The civil engineering structure reinforced is shaken, is widely used in a variety of applications in the field that multi-story masonry building is built；Existing building
Earthquake resistant engineering structure include four groups of structural slabs, bottom plate and multiple groups pillar, the bottom end of four groups of structural slabs respectively with the left side of bottom plate, the right side
Side, front side are connected with rear side, and multiple groups pillar is uniformly fixed to left side and rear side at the top of bottom plate from front to back；Existing building
Earthquake resistant engineering structure makes concrete coagulation in use, by concreting in the structural body that four groups of structural slabs and bottom plate surround
And be fixed together with pillar, the anti-of multi-story masonry building is promoted by the intensity of the support of multiple groups pillar and concrete itself
Shake ability；It is found in existing civil engineering anti-seismic structure use, the anti-seismic structure of concrete and pillar is more single, leads to it
Anti seismic efficiency is poor, is not able to satisfy the shockproof requirements of multi-story masonry building.
Utility model content
In order to solve the above technical problems, the utility model, which provides one kind, can be improved anti seismic efficiency, enhance multi-story masonry room
Room shock resistance meets the civil engineering antidetonation reinforcement structure of multi-story masonry building shockproof requirements.
A kind of civil engineering antidetonation reinforcement structure of the utility model, including four groups of structural slabs, bottom plate and multiple groups pillar, four
The bottom end of group structural slab is connect with the left side of bottom plate, right side, front side and rear side respectively, and multiple groups pillar is equably fixed from front to back
Left side and rear side at the top of bottom plate；It further include multiple groups outer support bar, multiple groups crossbeam, multiple groups inner bracing piece, basal layer and main body
Layer, the bottom end of multiple groups outer support bar is respectively and positioned at the structural slab in left side and the junction of bottom plate left end and positioned at the structure on right side
Plate is connected with the junction of bottom plate right end, and multiple groups outer support bar is sequentially arranged on bottom plate from front to back, multiple groups outer support bar
Top respectively be located at bottom plate on the left of the left side of multiple groups pillar and the right side of the multiple groups pillar on the right side of bottom plate connect, it is more
Group crossbeam left end and right end respectively be located at bottom plate on the left of multiple groups pillar right side and the multiple groups pillar on the right side of bottom plate
Left side connection, the top of multiple groups crossbeam and multiple groups outer support bar is located in same level, and the bottom end of multiple groups inner bracing piece is divided
It is not fixed on the junction of multiple groups pillar and bottom plate, the top of multiple groups inner bracing piece is separately fixed at a left side for multiple groups crossbeam bottom
Side and right side；Basal layer is laid between bottom dome and four groups of structural slabs, and basal layer is laid with using rock；Body layer is laid on
Between bottom dome and four groups of structural slabs, body layer is located above basal layer, and body layer is laid with using concrete.
A kind of civil engineering antidetonation reinforcement structure of the utility model is four groups of structural slabs, bottom plate, multiple groups pillar, more
Group crossbeam, multiple groups outer support bar and multiple groups inner bracing piece are all made of steel construction material.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes waterproof layer, and waterproof layer is laid on bottom top
Between portion and four groups of structural slabs, waterproof layer is located above basal layer, and waterproof layer is located at below body layer, and waterproof layer uses waterproofness
Construction material.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes multiple groups fixed column, equal in waterproof layer bottom
It is provided with fixing groove in multiple groups evenly, fixing groove under multiple groups is equably provided at the top of basal layer, fixing groove and more in multiple groups
The lower fixing groove of group corresponds, and the top of fixing groove is interconnected respectively under the bottom end of fixing groove and multiple groups in multiple groups, and multiple groups are solid
The top of fixed column is separately fixed in multiple groups in fixing groove, and the bottom end of multiple groups fixed column is separately fixed under multiple groups in fixing groove.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes buffer layer, and buffer layer is laid on bottom top
Between portion and four groups of structural slabs, buffer layer is located above waterproof layer, and buffer layer is located at below body layer, equably sets in buffer layer
It is equipped with multiple groups cushion hole, cushion hole is in regular hexagon.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes construction layer, and construction layer is laid on bottom top
Between portion and four groups of structural slabs, construction layer is located above body layer, and tabia material is used at construction.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes multiple groups spring, at the top of body layer uniformly
Ground is provided with multiple groups damping trough, and multiple groups spring is separately mounted in multiple groups damping trough, the top of multiple groups spring with construction layer bottom
Portion's contact.
A kind of civil engineering antidetonation reinforcement structure of the utility model, construction layer, body layer, buffer layer, waterproof layer and
Two groups of aseismic joints are provided with and communicated between basal layer, two groups of aseismic joints are located at the left and right side of bottom plate.
Compared with prior art the utility model has the following beneficial effects: multiple groups pillar can be reinforced by multiple groups outer support bar
Bonding strength between structural slab and bottom plate improves the stability of pillar, makes pillar when being shaken, and can pass through outer branch
Strut prevents pillar from tilting outward, damages to the house of top to being supported on the outside of pillar；Also, pass through multiple groups
Crossbeam can connect the pillar of the left and right sides, while the pillar of the left and right sides being made to keep stable spacing distance, avoid
Pillar tilts inwardly when being shaken, and improves the stability of pillar, while living by multiple groups inner support can be to multiple groups cross
Beam plays the role of firm support, improves the shock resistance of crossbeam；In addition, being laid with basal layer using rock, pass through rock itself
Shock resistance, the intensity of the structure entirety can be improved；By said structure design, the structure entirety can be reinforced
Anti-seismic performance meets the shockproof requirements of multi-story masonry building to enhance the shock resistance of multi-story masonry building.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
It is attached marked in the figure: 1, structural slab；2, bottom plate；3, pillar；4, outer support bar；5, crossbeam；6, inner bracing piece；7, basic
Layer；8, body layer；9, waterproof layer；10, fixed column；11, buffer layer；12, construction layer；13, spring；14, aseismic joint.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.
As shown in Figure 1, a kind of civil engineering antidetonation reinforcement structure of the utility model, including four groups of structural slabs 1, bottom plate 2
With multiple groups pillar 3, the bottom end of four groups of structural slabs 1 is connect with the left side of bottom plate 2, right side, front side and rear side respectively, multiple groups pillar 3
It is uniformly fixed to left side and the rear side at 2 top of bottom plate from front to back；It further include multiple groups outer support bar 4, multiple groups crossbeam 5, multiple groups
Inner bracing piece 6, basal layer 7 and body layer 8, the bottom end of multiple groups outer support bar 4 respectively be located at left side structural slab 1 and bottom plate 2
The junction of left end and structural slab 1 positioned at right side are connected with the junction of 2 right end of bottom plate, multiple groups outer support bar 4 by it is preceding extremely
After be sequentially arranged on bottom plate 2, the top of multiple groups outer support bar 4 respectively with the left side of the multiple groups pillar 3 that is located at the left side of bottom plate 2 and
Right side positioned at the multiple groups pillar 3 on 2 right side of bottom plate connects, and the left end of multiple groups crossbeam 5 and right end are respectively and positioned at 2 left side of bottom plate
The right side of multiple groups pillar 3 is connected with the left side of the multiple groups pillar 3 positioned at 2 right side of bottom plate, multiple groups crossbeam 5 and multiple groups outer support bar 4
Top be located in same level, the bottom end of multiple groups inner bracing piece 6 is separately fixed at the junction of multiple groups pillar 3 Yu bottom plate 2
On, the top of multiple groups inner bracing piece 6 is separately fixed at the left and right side of 5 bottom of multiple groups crossbeam；Basal layer 7 is laid on bottom top
Between portion and four groups of structural slabs 1, basal layer 7 is laid with using rock；Body layer 8 be laid on bottom dome and four groups of structural slabs 1 it
Between, body layer 8 is located at 7 top of basal layer, and body layer 8 is laid with using concrete；It can reinforce multiple groups by multiple groups outer support bar
Bonding strength between pillar and structural slab and bottom plate improves the stability of pillar, makes pillar when being shaken, and can pass through
Outer support bar prevents pillar from tilting outward, damages to the house of top to being supported on the outside of pillar；Also, pass through
Multiple groups crossbeam can connect the pillar of the left and right sides, while the pillar of the left and right sides being made to keep stable spacing distance,
It avoids pillar when being shaken, tilts inwardly, improve the stability of pillar, while living by multiple groups inner support can be to more
Group crossbeam plays the role of firm support, improves the shock resistance of crossbeam；In addition, being laid with basal layer using rock, pass through rock
The intensity of the structure entirety can be improved in the shock resistance of itself；By said structure design, it is whole that the structure can be reinforced
The anti-seismic performance of body meets the shockproof requirements of multi-story masonry building to enhance the shock resistance of multi-story masonry building.
A kind of civil engineering antidetonation reinforcement structure of the utility model, four groups of structural slabs 1, bottom plate 2, multiple groups pillar 3,
Multiple groups crossbeam 5, multiple groups outer support bar 4 and multiple groups inner bracing piece 6 are all made of steel construction material；It can be with reinforcement structure using steel construction
The intensity and toughness of plate, bottom plate, pillar, crossbeam, outer support bar and inner bracing piece etc., so that its anti seismic efficiency is improved, to mention
The shock resistance of the high structure entirety.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes waterproof layer 9, and waterproof layer 9 is laid on bottom
Between top and four groups of structural slabs 1, waterproof layer 9 is located at 7 top of basal layer, and waterproof layer 9 is located at 8 lower section of body layer, and waterproof layer 9 is adopted
With waterproofness construction material；The waterproof performance of the structure can be improved by being laid with waterproof layer, avoid the structure for a long time by
Steam influences and reduces self-strength, influences the shock resistance of the structure.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes multiple groups fixed column 10, in 9 bottom of waterproof layer
Equably be provided with fixing groove in multiple groups, the fixing groove in the case where the top of basal layer 7 is equably provided with multiple groups, in multiple groups fixing groove with
Fixing groove corresponds under multiple groups, and the top of fixing groove is interconnected respectively under the bottom end of fixing groove and multiple groups in multiple groups, multiple groups
The top of fixed column 10 is separately fixed in multiple groups in fixing groove, and the bottom end of multiple groups fixed column 10 is separately fixed under multiple groups fixed
In slot；It can be prevented when an earthquake occurs, with the fixed relationship between reinforced waterproofing layer and basal layer because anti-by multiple groups fixed column
Water layer is inconsistent with base layer material, and interlayer is caused to misplace, so as to improve the anti-of the structure by fixed column
Shake ability.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes buffer layer 11, and buffer layer 11 is laid on bottom
At the top of portion between four groups of structural slabs 1, buffer layer 11 is located at 9 top of waterproof layer, and buffer layer 11 is located at 8 lower section of body layer, buffering
Multiple groups cushion hole is equably provided in layer 11, cushion hole is in regular hexagon；It can be absorbed ground by the cushion hole on buffer layer
The energy that seismic wave transmits when shake occurs, reduces its impact to the structure entirety, to improve, the structure is whole to be resisted
Shake ability；In addition, cushion hole is shaped to regular hexagon, the intensity of cushion hole itself can be improved, avoid its by
Itself generates collapse when vibration.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes construction layer 12, and construction layer 12 is laid on bottom
At the top of portion between four groups of structural slabs 1, construction layer 12 is located at 8 top of body layer, uses tabia material at construction；Laying construction
Layer can be convenient carries out construction over the structure, avoids concrete structure overly hard and increases difficulty of construction；Meanwhile
It can also guarantee the intensity and shock resistance of the structure using tabia.
A kind of civil engineering antidetonation reinforcement structure of the utility model, further includes multiple groups spring 13, equal at 8 top of body layer
Be provided with multiple groups damping trough evenly, multiple groups spring 13 is separately mounted in multiple groups damping trough, the top of multiple groups spring 13 with apply
The contact of 12 bottom of work layer；It can slow down the shockproofness between body layer and construction layer when earthquake occurs by spring, reduce
Impact strength between body layer and construction layer, to slow down earthquake destruction caused by it, so that it is whole to improve the structure
Shock strength.
A kind of civil engineering antidetonation reinforcement structure of the utility model, in construction layer 12, body layer 8, buffer layer 11, waterproof
Two groups of aseismic joints 14 are provided with and communicated between layer 9 and basal layer 7, two groups of aseismic joints 14 are located at the left and right side of bottom plate 2；
The structure can be divided on the whole under the premise of not reducing the support strength of the structure by the way that aseismic joint is arranged
Three parts, when earthquake occurs, avoid larger by vibration limits at one and make it so that can keep independent between three parts
His position is by related destruction, to improve the shock resistance of the structure entirety.
Structural slab is connect, so by a kind of civil engineering antidetonation reinforcement structure of the utility model with bottom plate when in use
Pillar is fixed on bottom plate afterwards, is then fixed pillar and bottom plate and structural slab using crossbeam, outer support bar and inner bracing piece,
Then basal layer, waterproof layer, buffer layer, body layer and construction layer are successively laid between bottom plate and structural slab；In addition, will fix
Column is mounted between waterproof layer and basal layer, and spring is mounted at the top of body layer；In addition, paying attention in the structure construction
Retain the position of aseismic joint.
A kind of civil engineering antidetonation reinforcement structure of the utility model, the mounting means of all components described above, connection
Mode or set-up mode are common mechanical mode, and the specific structure of its all component, model and coefficient index are it
Included technology, is implemented, therefore details are not described herein as long as can reach the equal of its advantages.
A kind of civil engineering antidetonation reinforcement structure of the utility model, it is in the absence of explanation to the contrary, " left up and down
It is right, inside and outside front and back " etc. the noun of locality that is included in the term only represent orientation of the term under normal service condition, or be ability
What field technique personnel understood is commonly called as, and should not be seen as a limitation of this term.Term as used herein " vertically ", " level
", "left", "right" and similar statement for illustrative purposes only." first " described in the utility model, " second ",
" third " does not represent specific quantity and sequence, is only used for the differentiation of title.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into modification.
Claims (8)
1. a kind of civil engineering antidetonation reinforcement structure, including four groups of structural slabs (1), bottom plate (2) and multiple groups pillar (3), four groups of knots
The bottom end of structure plate (1) is connect with left side, right side, front side and the rear side of bottom plate (2) respectively, and multiple groups pillar (3) is uniform from front to back
Ground is fixed on left side and rear side at the top of bottom plate (2), which is characterized in that including multiple groups outer support bar (4), multiple groups crossbeam (5), more
Group inner bracing piece (6), basal layer (7) and body layer (8), the bottom end of multiple groups outer support bar (4) respectively with the structure positioned at left side
Structural slab (1) of the plate (1) with the junction of bottom plate (2) left end and positioned at right side is connected with the junction of bottom plate (2) right end, more
Group outer support bar (4) is sequentially arranged at from front to back on bottom plate (2), and the top of multiple groups outer support bar (4) is respectively and positioned at bottom plate
(2) left side of the multiple groups pillar (3) on the left of is connected with the right side for the multiple groups pillar (3) being located on the right side of bottom plate (2), multiple groups crossbeam
(5) left end and right end respectively with the right side of multiple groups pillar (3) being located on the left of bottom plate (2) and be located at more on the right side of bottom plate (2)
The top of the left side connection of group pillar (3), multiple groups crossbeam (5) and multiple groups outer support bar (4) is located in same level, in multiple groups
The bottom end of support rod (6) is separately fixed on the junction of multiple groups pillar (3) and bottom plate (2), the top of multiple groups inner bracing piece (6)
It is separately fixed at the left and right side of multiple groups crossbeam (5) bottom；Basal layer (7) is laid on bottom dome and four groups of structural slabs (1)
Between, basal layer (7) is laid with using rock；Body layer (8) is laid between bottom dome and four groups of structural slabs (1), body layer
(8) it is located above basal layer (7), body layer (8) is laid with using concrete.
2. a kind of civil engineering antidetonation reinforcement structure as described in claim 1, which is characterized in that four groups of structural slabs (1),
Bottom plate (2), multiple groups pillar (3), multiple groups crossbeam (5), multiple groups outer support bar (4) and multiple groups inner bracing piece (6) are all made of steel construction
Material.
3. a kind of civil engineering antidetonation reinforcement structure as claimed in claim 2, which is characterized in that further include waterproof layer (9), prevent
Water layer (9) is laid between bottom dome and four groups of structural slabs (1), and waterproof layer (9) is located above basal layer (7), waterproof layer (9)
Below body layer (8), waterproof layer (9) uses waterproofness construction material.
4. a kind of civil engineering antidetonation reinforcement structure as claimed in claim 3, which is characterized in that further include multiple groups fixed column
(10), it is equably provided with fixing groove in multiple groups in waterproof layer (9) bottom, is equably provided with multiple groups at the top of basal layer (7)
Lower fixing groove, fixing groove corresponds under fixing groove and multiple groups in multiple groups, fixing groove under the bottom end of fixing groove and multiple groups in multiple groups
Top be interconnected respectively, the top of multiple groups fixed column (10) is separately fixed in multiple groups in fixing groove, multiple groups fixed column
(10) bottom end is separately fixed under multiple groups in fixing groove.
5. a kind of civil engineering antidetonation reinforcement structure as claimed in claim 4, which is characterized in that it further include buffer layer (11),
Buffer layer (11) is laid between bottom dome and four groups of structural slabs (1), and buffer layer (11) is located above waterproof layer (9), buffering
Layer (11) is located at below body layer (8), and multiple groups cushion hole is equably provided in buffer layer (11), and cushion hole is in regular hexagon.
6. a kind of civil engineering antidetonation reinforcement structure as claimed in claim 5, which is characterized in that it further include construction layer (12),
Construction layer (12) is laid between bottom dome and four groups of structural slabs (1), and construction layer (12) is located above body layer (8), construction
Place uses tabia material.
7. a kind of civil engineering antidetonation reinforcement structure as claimed in claim 6, which is characterized in that further include multiple groups spring
(13), it is equably provided with multiple groups damping trough at the top of body layer (8), multiple groups spring (13) is separately mounted to multiple groups damping trough
Interior, the top of multiple groups spring (13) is contacted with construction layer (12) bottom.
8. a kind of civil engineering antidetonation reinforcement structure as claimed in claim 7, which is characterized in that in construction layer (12), main body
Two groups of aseismic joints (14), two groups of aseismic joints are provided with and communicated between layer (8), buffer layer (11), waterproof layer (9) and basal layer (7)
(14) it is located at the left and right side of bottom plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821972951.5U CN209429643U (en) | 2018-11-28 | 2018-11-28 | A kind of civil engineering antidetonation reinforcement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821972951.5U CN209429643U (en) | 2018-11-28 | 2018-11-28 | A kind of civil engineering antidetonation reinforcement structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209429643U true CN209429643U (en) | 2019-09-24 |
Family
ID=67968872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821972951.5U Expired - Fee Related CN209429643U (en) | 2018-11-28 | 2018-11-28 | A kind of civil engineering antidetonation reinforcement structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209429643U (en) |
-
2018
- 2018-11-28 CN CN201821972951.5U patent/CN209429643U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105696742B (en) | A kind of the friction-type assembled building block and filling wall of enhancing structure anti-seismic performance | |
| CN105735524A (en) | Wooden frame energy-consuming wall body of ancient building | |
| CN109868897A (en) | Assembly type RC frame structure with buckling-restrained braces laid based on interlayer rigidity | |
| CN205475997U (en) | Be favorable to shock -resistant assembled building block of structure and infilled wall structure thereof | |
| CN102011434A (en) | BRB (buckling restrained brace) concrete frame beam-column joint | |
| CN205713379U (en) | A kind of shock-absorbing building | |
| CN211873943U (en) | Ancient building antidetonation reinforcing apparatus | |
| CN209429643U (en) | A kind of civil engineering antidetonation reinforcement structure | |
| CN106284396A (en) | A kind of shock-proof type reinforced concrete structure post | |
| CN205637233U (en) | Ancient building wooden frame wall body that consumes energy | |
| CN109339544A (en) | A kind of civil engineering antidetonation reinforcement structure | |
| CN205637337U (en) | Outband is stretched apron roof beam and is supported two curb plate nodes | |
| CN209653189U (en) | Extension type curtain wall connecting node construction | |
| CN104652609A (en) | High-performance foamed aluminum energy-consuming connecting device for filler wall and main body structure | |
| CN101974940A (en) | Joint of buckling restrained brace and concrete beam | |
| CN207597754U (en) | A kind of assembled stair attachment device | |
| CN207553434U (en) | A kind of architecture beam antidetonation connection structure | |
| CN205935224U (en) | Multidimension building shock insulation support | |
| CN213709609U (en) | Anti-seismic building pile for building | |
| CN210564579U (en) | Tunnel steel bow member damping deformation supporting device | |
| CN207314957U (en) | A kind of isolation structure being used in low layer brick-and-concrete buildings | |
| CN204715535U (en) | The hetermorphiscal column node that PC rod iron is strengthened | |
| CN210002435U (en) | earthquake-proof foundation for high-rise building | |
| CN209723233U (en) | High strength steel earthquake-resistant structure connector | |
| CN208594635U (en) | A kind of connection structure of assembling type steel structure building exterior wall panel and girder steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190924 Termination date: 20191128 |