CN214574621U - Node dry joining method assembly structure - Google Patents
Node dry joining method assembly structure Download PDFInfo
- Publication number
- CN214574621U CN214574621U CN202023248629.8U CN202023248629U CN214574621U CN 214574621 U CN214574621 U CN 214574621U CN 202023248629 U CN202023248629 U CN 202023248629U CN 214574621 U CN214574621 U CN 214574621U
- Authority
- CN
- China
- Prior art keywords
- prefabricated
- hole
- bolt
- steel plate
- connecting piece
- 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 joint dry-joining method assembly structure, which comprises a first prefabricated component, a second prefabricated component and a connecting piece; a plurality of first preformed holes for installing connecting pieces are reserved in the first prefabricated part; the second prefabricated part is pre-embedded with a second fixing plate and a second preformed hole for the connecting piece to pass through, the second fixing plate is provided with a second fixing hole for the connecting piece to pass through, and the second fixing plate is positioned on the outer side of the second preformed hole; the connecting piece is pre-buried in first preformed hole, the connecting piece passes second fixed orifices and second preformed hole in proper order and fixedly connects first prefabricated component and second prefabricated component. The utility model has the advantages that: the first prefabricated part and the second prefabricated part are connected in a nodal manner through the connecting piece, so that the construction difficulty can be greatly reduced, the efficiency can be improved, and the product quality can be improved. The connecting piece is adopted for connection, so that the connecting piece can be repeatedly utilized and simply and quickly detached.
Description
Technical Field
The utility model relates to an assembly type structure technical field, especially a node dry joint method assembly structure.
Background
With the improvement of building technology and the application of new achievements of modern scientific and technical books, the fabricated building is more and more concerned by people. In recent years, along with the implementation of government policies and the popularization of industrialization, the fabricated concrete structure system is popularized in a large scale due to the characteristics of energy conservation, environmental protection, template saving, construction period shortening and the like. At present, a common structural form is an assembly type concrete frame structure, and according to the construction mode of connecting nodes of a prefabricated assembly type concrete structure, the node connection mode mainly comprises a wet connection mode and a dry connection mode, and compared with the dry connection mode, the wet connection mode is more widely applied at the present stage. After the wet connection building structures are connected, the adverse effect on structural components is small, but the anchoring operation difficulty of wet connection steel bars is high, and the anchoring operation quality is poor; grouting and maintenance links are required in the construction period, the construction period is long, and installation is complex. The building industrialization and industrialization are continuously improved, the advantages and disadvantages of various node connection modes are fully known on the premise of ensuring the safety of building nodes, the optimal node connection mode is selected aiming at a structural system, and the method has great significance for the construction and construction of the quality and quantity guarantee of the current green building.
Disclosure of Invention
An object of the utility model is to provide a wet problem of connecting the operation degree of difficulty height, inefficiency and operation quality difference has been solved.
A node dry joint method assembly structure comprises a first prefabricated part, a second prefabricated part and a connecting piece; a plurality of first preformed holes for installing connecting pieces are reserved in the first prefabricated part; the second prefabricated part is pre-embedded with a second fixing plate and a second preformed hole for the connecting piece to pass through, the second fixing plate is provided with a second fixing hole for the connecting piece to pass through, and the second fixing plate is positioned on the outer side of the second preformed hole; the connecting piece is pre-buried in first preformed hole, the connecting piece passes second fixed orifices and second preformed hole in proper order and fixedly connects first prefabricated component and second prefabricated component.
Furthermore, the connecting piece is an anchoring bolt and a nut locked on the anchoring bolt, and the second fixing plate is a second steel plate; the anchoring bolt is embedded in the first reserved hole, sequentially penetrates through the second fixing hole and the second reserved hole, and is locked on the anchoring bolt by a nut to fixedly connect the first prefabricated part and the second prefabricated part; the outer side surface of the second steel plate is flush with the outer side surface of the second prefabricated part.
Furthermore, the first prefabricated part is a prefabricated enlarged foundation, and the second prefabricated part is a prefabricated column; a first steel plate is embedded in the prefabricated enlarged foundation, a first fixing hole for an anchoring bolt to penetrate through is formed in the first steel plate, and the outer side surface of the first steel plate is flush with the outer side surface of the prefabricated enlarged foundation; a bolt connector is embedded in the prefabricated column, the connecting end of the bolt connector is positioned in the second reserved hole, and a connector hole for an anchoring bolt to penetrate through is formed in the connecting end of the bolt connector; the anchor bolt is embedded in a first reserved hole of the prefabricated enlarged foundation, the anchor bolt sequentially passes through the first fixing hole, the second fixing hole and the second reserved hole, and a nut is locked on the anchor bolt to fixedly connect the prefabricated enlarged foundation and the prefabricated column; the bolt connector is connected with a bolt and a nut; the contact surface of the first steel plate and the second steel plate is connected through welding.
Furthermore, the first prefabricated part is a prefabricated enlarged foundation, and the second prefabricated part is a prefabricated ground beam; a first steel plate is embedded in the prefabricated enlarged foundation, a first fixing hole for an anchoring bolt to penetrate through is formed in the first steel plate, and the outer side surface of the first steel plate is flush with the outer side surface of the prefabricated enlarged foundation; the anchor bolt is pre-buried in the first preformed hole of prefabricated enlarged footing, the anchor bolt passes first fixed orifices, second fixed orifices and second preformed hole in proper order, the nut lock will prefabricate enlarged footing and prefabricated ground beam fixed connection on the anchor bolt, the first steel sheet pass through welded connection with the contact surface of second steel sheet.
Further, the first prefabricated part is a prefabricated beam, and the second prefabricated part is a prefabricated plate; the prefabricated plate top be equipped with an installation groove, second preformed hole be connected with the installation groove, anchor bolt pre-buried in the first preformed hole of precast beam, anchor bolt pass second fixed orifices and second preformed hole in proper order and be located the nut locking connection of installation groove.
Further, it is characterized in that: the prefabricated plates are two in number and are respectively fixedly arranged on two sides of the prefabricated beam; the two prefabricated plates are provided with a gap; the structure glue is filled in the whole gap.
Furthermore, the first prefabricated part is a prefabricated column, the second prefabricated part is a prefabricated beam, and the number of the prefabricated beams is two; the outer side surface of the first steel plate is flush with the outer side surface of the prefabricated column; a bolt connector is embedded in the precast beam, the connecting end of the bolt connector is positioned in the second reserved hole, and a connector hole for an anchoring bolt to penetrate through is formed in the connecting end of the bolt connector; the anchor bolt is pre-buried in the first preformed hole of prefabricated post, the anchor bolt passes first fixed orifices, second fixed orifices and second preformed hole in proper order, the nut lock is with precast beam and prefabricated post fixed connection on the anchor bolt the first steel sheet pass through welded connection with the contact surface of second steel sheet.
After the technical scheme is adopted, the beneficial effects of the utility model are that: the first prefabricated part and the second prefabricated part are connected in a nodal manner through the connecting piece, so that the construction difficulty can be greatly reduced, the efficiency can be improved, and the product quality can be improved. The connecting piece is adopted for connection, so that the connecting piece can be repeatedly utilized and simply and quickly detached.
Drawings
Fig. 1 is a schematic view of an overall structure of a first embodiment of the present invention.
Fig. 2 is a schematic structural view of a connection end of the bolt connector.
Fig. 3 is a schematic structural diagram of the second embodiment.
Fig. 4 is a schematic structural diagram of the third embodiment.
Fig. 5 is a schematic structural diagram of a fourth embodiment.
Fig. 6 is a schematic structural diagram of the fifth embodiment.
1. A connecting member; 11. an anchor bolt; 12. a nut; 13. a first steel plate; 14. a first fixing hole; 15. a second steel plate; 16. a second fixing hole; 17. a bolt connector; 2. prefabricating an enlarged foundation; 21. a first preformed hole; 3. prefabricating a column; 31. a second preformed hole; 4. prefabricating a ground beam; 5. prefabricating a beam; 6. provided is a prefabricated slab.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1 to 2, the present embodiment discloses a joint dry-joining method assembly structure, which includes a first prefabricated component, a second prefabricated component and a connecting member 1, wherein a plurality of first preformed holes 21 for installing the connecting member 1 are reserved in the first prefabricated component, and a second fixing plate and a second preformed hole 31 for the second connecting member 1 to pass through are pre-buried in the second prefabricated component. The second fixing plate is located outside the second prepared hole 31. Connecting piece 1 is pre-buried in first preformed hole 21, and connecting piece 1 passes first fixed plate and second preformed hole 31 in proper order and is with first prefabricated component and second prefabricated component fixed connection. The connecting piece 1 is an anchor bolt 11 and a nut 12 locked on the anchor bolt 11, the second fixing plate is a second steel plate 15, and the outer side surface of the second steel plate 15 is flush with the outer side surface of the second prefabricated part.
The first embodiment is as follows:
as shown in fig. 1, the first prefabricated part is a prefabricated enlarged foundation 2, and the second prefabricated part is a prefabricated column 3. A first steel plate 13 is embedded in the prefabricated enlarged foundation 2, a first fixing hole 14 for the anchor bolt 11 to penetrate through is formed in the first steel plate 13, and the outer side face of the first steel plate 13 is flush with the outer side face of the prefabricated enlarged foundation 2. The bolt connector 17 is embedded in the prefabricated column 3, the connecting end of the bolt connector 17 is located in the second preformed hole 31, the connecting end of the bolt connection is provided with a connector hole for the anchor bolt 11 to pass through, the side face of the prefabricated column 3 is provided with a locking groove for locking the nut 12 on the bolt, the locking groove is located between the bolt connector 17 and the second preformed hole 31, and the locking groove is communicated with the second preformed hole 31.
The anchor bolt 11 is pre-buried in first preformed hole 21, and the anchor bolt 11 passes first fixed orifices 14 of first steel sheet 13, the second fixed orifices 16 of second steel sheet 15, second preformed hole 31 and connector hole in proper order, and the locking end of anchor bolt 11 is located the locking inslot, and the nut 12 is installed at the locking end of anchor bolt 11, carries out locking connection with prefabricated post 3 with prefabricated enlarged foundation 2. After the connection, concrete is poured into the locking groove, the connection surface of the first steel plate 13 and the second steel plate 15 is welded and fixed after the concrete is poured, the local rigidity of the connection part can be greatly improved by welding the connection surface of the first steel plate 13 and the second steel plate 15, the integrity and the stability of the structure of the prefabricated part are enhanced, and the concrete integrity is prevented from being damaged due to stress concentration.
Example two:
as shown in fig. 3, the first prefabricated part is a prefabricated enlarged foundation 2, and the second prefabricated part is a prefabricated ground beam 4. The first steel plate 13 is embedded in the prefabricated enlarged foundation 2. The first steel plate 13 is provided with a first fixing hole 14 for the anchor bolt 11 to penetrate through, and the outer side surface of the first steel plate 13 is flush with the outer side surface of the prefabricated enlarged foundation 2. The side surface of the prefabricated ground beam 4 is provided with a locking groove for locking the nut 12 on the bolt, and the locking groove is communicated with the second preformed hole 31.
Anchor bolt 11 is pre-buried in prefabricated first preformed hole 21 who enlarges basis 2, anchor bolt 11 passes first fixed orifices 14 in proper order, second fixed orifices 16 and second preformed hole 31, the locking end of anchor bolt 11 is located the locking inslot, nut 12 lock will prefabricate on anchor bolt 11 and enlarge basis 2 and prefabricated grade beam 4 fixed connection, toward pouring the concrete in the locking inslot after treating the connection, carry out welded fastening to the connection face of first steel sheet 13 and second steel sheet 15 after pouring the concrete, can increase substantially the local rigidity of junction through carrying out the welded mode to the connection face of first steel sheet 13 and second steel sheet 15, strengthen the wholeness of prefabricated component structure, stability, prevent to destroy the concrete wholeness because of stress concentration.
Example three:
as shown in fig. 4, the first prefabricated elements are precast girders 5, and the second prefabricated elements are precast slabs 6. The top of the prefabricated plate 6 is provided with an installation groove which is communicated with the second preformed hole 31.
The anchor bolt 11 sequentially passes through the second fixing hole 16 and the second preformed hole 31 of the second steel plate 15, the locking end of the anchor bolt 11 is positioned in the mounting groove, and the nut 12 is locked on the anchor bolt 11 to lock and fixedly connect the precast beam 5 and the precast slab 6. And after the locking and fixing connection, pouring concrete into the locking groove.
Example four:
as shown in fig. 5, the fourth embodiment is different from the third embodiment in that the number of the precast slabs 6 is two, two precast slabs 6 are respectively fixedly installed at both sides of the precast beam 5, a gap is formed between the two precast slabs 6, and structural glue is filled in the entire gap. The connection between the two precast beams 5 can be better improved by filling the structural adhesive in the gap barrel, so that the strength is improved
Example five:
as shown in fig. 6, the first prefabricated parts are prefabricated columns 3, the second prefabricated parts are prefabricated beams 5, and the number of the prefabricated beams 5 is two. First steel plates 13 are pre-embedded in two sides of the prefabricated column 3, first fixing holes 14 for the anchor bolts 11 to penetrate are formed in the two first steel plates 13, and the outer side faces of the two first steel plates 13 are flush with the outer side faces of the prefabricated column 3. The precast girders 5 may be symmetrically installed at both sides of the precast column 3.
The precast beam 5 is internally embedded with a bolt connector 17, the connecting end of the bolt connector 17 is positioned in the second preformed hole 31, the connecting end of the bolt connector 17 is provided with a connector hole for the anchor bolt 11 to pass through, the side surface of the precast beam 5 is provided with a locking groove for locking the nut 12 on the bolt, the locking groove is positioned between the bolt connector 17 and the second preformed hole 31, and the locking groove is communicated with the second preformed hole 31.
The anchor bolt 11 is pre-buried on first preformed hole 21, and the anchor bolt 11 passes first fixed orifices 14 of first steel sheet 13, the second fixed orifices 16 of second steel sheet 15, second preformed hole 31 and connector hole in proper order, and the locking end of anchor bolt 11 is located the locking inslot, and the nut 12 is installed at the locking end of anchor bolt 11, carries out fastening connection with precast column 3 and precast beam 5. After the connection, concrete is poured into the locking groove, the connection surface of the first steel plate 13 and the second steel plate 15 is welded and fixed after the concrete is poured, the local rigidity of the connection part can be greatly improved by welding the connection surface of the first steel plate 13 and the second steel plate 15, the integrity and the stability of the structure of the prefabricated part are enhanced, and the concrete integrity is prevented from being damaged due to stress concentration. The anchor bolt 11 may be a stud bolt.
The prefabricated part adopts the direct prefabricated processing of mill, and the prefabricated part quality is controllable, effectively solves the concrete landing, phenomenon such as loose, segregation that take place among the cast-in-place process. Interior decoration, the direct integrated assembled architectural design of molding have guaranteed that component position location is accurate, the surface is regular, the adhesion is firm, easy operation when prefabricated component node operation construction has improved and has pour quality, node operation quality structure bearing capacity and connection rigidity. Meanwhile, the construction progress is greatly improved. The installation does not need on-site wet operation such as steel bar binding, concrete pouring and the like, the labor consumption can be reduced, the labor cost, the mechanical cost and the management cost are saved, the construction period is shortened, and the environmental protection and the sustainable development are emphasized.
To sum up, the utility model discloses a prefabricated component is once only processed by the mill and is accomplished, and the prefabricated component can be according to the actual required bearing theory calculation, can control the structural mechanics performance index of prefabricated component to satisfy different designing requirements. The prefabricated part is connected with the component through the embedded steel plate and the embedded bolt, so that the automatic production line or the combined vertical mold process production is facilitated, the construction is simple, the speed is high, and the transportation of the prefabricated part is facilitated. The embedded bolt connection can embody different attributes according to the arrangement and combination mode of the bolts, and hinged connection, semi-rigid connection and even rigid connection are formed. The connecting requirements of the building structure can be met, the building with excellent connecting performance can be designed and built, steel plates are embedded in the connecting part and the end part of the prefabricated part, the local rigidity is improved in a steel plate welding mode, the integrity and the stability of the prefabricated part structure are enhanced, and the concrete integrity is prevented from being damaged due to stress concentration. The applicability is good, reasonable prefabricated part combination matching design can be selected according to project requirements, and requirements of different environments and processes are met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (7)
1. A node dry joint method assembly structure is characterized by comprising a first prefabricated part, a second prefabricated part and a connecting piece;
a plurality of first preformed holes for installing connecting pieces are reserved in the first prefabricated part;
the second prefabricated part is pre-embedded with a second fixing plate and a second preformed hole for the connecting piece to pass through, the second fixing plate is provided with a second fixing hole for the connecting piece to pass through, and the second fixing plate is positioned on the outer side of the second preformed hole;
the connecting piece is pre-buried in first preformed hole, the connecting piece passes second fixed orifices and second preformed hole in proper order and fixedly connects first prefabricated component and second prefabricated component.
2. The node dry-connect assembly structure of claim 1, wherein: the connecting piece is an anchoring bolt and a nut locked on the anchoring bolt, and the second fixing plate is a second steel plate;
the anchoring bolt is embedded in the first reserved hole, sequentially penetrates through the second fixing hole and the second reserved hole, and is locked on the anchoring bolt by a nut to fixedly connect the first prefabricated part and the second prefabricated part;
the outer side surface of the second steel plate is flush with the outer side surface of the second prefabricated part.
3. The node dry-connect assembly structure of claim 2, wherein: the first prefabricated part is a prefabricated enlarged foundation, and the second prefabricated part is a prefabricated column;
a first steel plate is embedded in the prefabricated enlarged foundation, a first fixing hole for an anchoring bolt to penetrate through is formed in the first steel plate, and the outer side surface of the first steel plate is flush with the outer side surface of the prefabricated enlarged foundation;
a bolt connector is embedded in the prefabricated column, the connecting end of the bolt connector is positioned in the second reserved hole, and a connector hole for an anchoring bolt to penetrate through is formed in the bottom of the bolt connector;
the anchor bolt is embedded in a first reserved hole of the prefabricated enlarged foundation, the anchor bolt sequentially passes through the first fixing hole, the second reserved hole and the connector hole, and a nut is locked on the anchor bolt to fixedly connect the prefabricated enlarged foundation and the prefabricated column; the contact surface of the first steel plate and the second steel plate is connected through welding.
4. The node dry-connect assembly structure of claim 2, wherein: the first prefabricated part is a prefabricated enlarged foundation, and the second prefabricated part is a prefabricated ground beam;
a first steel plate is embedded in the prefabricated enlarged foundation, a first fixing hole for an anchoring bolt to penetrate through is formed in the first steel plate, and the outer side surface of the first steel plate is flush with the outer side surface of the prefabricated enlarged foundation;
the anchor bolt is pre-buried in the first preformed hole of prefabricated enlarged footing, the anchor bolt passes first fixed orifices, second fixed orifices and second preformed hole in proper order, the nut lock will prefabricate enlarged footing and prefabricated ground beam fixed connection on the anchor bolt, the first steel sheet pass through welded connection with the contact surface of second steel sheet.
5. The node dry-connect assembly structure of claim 2, wherein: the first prefabricated part is a prefabricated beam, and the second prefabricated part is a prefabricated plate;
the prefabricated plate top be equipped with an installation groove, second preformed hole communicate with each other with the installation groove, anchor bolt pre-buried in the first preformed hole of precast beam, anchor bolt pass second fixed orifices and second preformed hole in proper order and be located the nut locking connection of installation groove.
6. The node dry-connect assembly structure of claim 5, wherein: the prefabricated plates are two in number and are respectively fixedly arranged on two sides of the prefabricated beam; the two prefabricated plates are provided with a gap;
the structure glue is filled in the whole gap.
7. The node dry-connect assembly structure of claim 2, wherein: the first prefabricated part is a prefabricated column, the second prefabricated part is a prefabricated beam, and the number of the prefabricated beams is two;
the outer side surface of the first steel plate is flush with the outer side surface of the prefabricated column;
a bolt connector is embedded in the precast beam, the connecting end of the bolt connector is positioned in the second reserved hole, and a connector hole for an anchoring bolt to penetrate through is formed in the connecting end of the bolt connector;
the anchor bolt is embedded in a first reserved hole of the precast column, the anchor bolt sequentially passes through the first fixing hole, the second reserved hole and the connector hole, and a nut is locked on the anchor bolt to fixedly connect the precast beam and the precast column; the contact surface of the first steel plate and the second steel plate is connected through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023248629.8U CN214574621U (en) | 2020-12-29 | 2020-12-29 | Node dry joining method assembly structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023248629.8U CN214574621U (en) | 2020-12-29 | 2020-12-29 | Node dry joining method assembly structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214574621U true CN214574621U (en) | 2021-11-02 |
Family
ID=78367224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023248629.8U Active CN214574621U (en) | 2020-12-29 | 2020-12-29 | Node dry joining method assembly structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214574621U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108814A (en) * | 2021-12-07 | 2022-03-01 | 中交一公局集团有限公司 | Assembly type prefabricated part connecting structure and construction method |
-
2020
- 2020-12-29 CN CN202023248629.8U patent/CN214574621U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114108814A (en) * | 2021-12-07 | 2022-03-01 | 中交一公局集团有限公司 | Assembly type prefabricated part connecting structure and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111424849A (en) | Prefabricated reinforced concrete shear wall convenient to install and construction method | |
| CN103452350B (en) | Assembling electronic workshop and construction method thereof | |
| CN110359452B (en) | Node connecting part, frame prestress anchor cable supporting structure and construction method | |
| CN108301545A (en) | A kind of big module overlapping contignation of the assembled with space truss temporary support | |
| CN111719849A (en) | Primary and secondary beam one-step forming structure of PC superposed beam and construction method thereof | |
| CN112458877A (en) | Assembled steel-concrete combined rigid frame bridge and construction method thereof | |
| CN207812741U (en) | Pre-manufactured steel structure overlapped shear wall | |
| CN112196107A (en) | Prefabricated assembled type steel reinforced concrete primary and secondary beam connecting joint | |
| CN115596000A (en) | Prefabricated raft-shaped foundation component, assembled raft-shaped foundation and house | |
| CN114232844B (en) | Shear wall system of fully assembled building and wallboard module prefabrication method thereof | |
| CN116104206A (en) | PEC column and steel superposed beam connection steel node | |
| CN214574621U (en) | Node dry joining method assembly structure | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| CN112045841B (en) | Construction method of assembly type beam-making pedestal for prefabricating high-speed railway box beam | |
| CN113389304A (en) | Assembled double-blade cavity superposed wall system and construction method thereof | |
| CN212000571U (en) | Connection structure of assembled precast concrete decking and girder steel | |
| CN219671054U (en) | Steel-concrete combined small box girder prefabricated by integral hoisting | |
| CN113027021A (en) | Support-free prefabricated floor slab with bracket | |
| CN218437155U (en) | Prefabricated bar foundation component, assembled bar foundation and house | |
| CN112593632A (en) | Fabricated beam-slab structure suitable for large-span high-clearance building and construction method thereof | |
| CN215629294U (en) | Bent cap structure and pier | |
| CN214884632U (en) | Assembled shaped steel composite wall | |
| CN212927032U (en) | Primary and secondary beam one-step forming structure of PC superposed beam | |
| CN212335736U (en) | Prefabricated assembled steel-concrete composite beam and bridge comprising same | |
| CN212866939U (en) | Wall body leveling mechanism for longitudinal rib superposed shear wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |