CN108104308B - Repairable multistage energy consumption dry-type mixed assembled concrete shear wall - Google Patents
Repairable multistage energy consumption dry-type mixed assembled concrete shear wall Download PDFInfo
- Publication number
- CN108104308B CN108104308B CN201711347315.3A CN201711347315A CN108104308B CN 108104308 B CN108104308 B CN 108104308B CN 201711347315 A CN201711347315 A CN 201711347315A CN 108104308 B CN108104308 B CN 108104308B
- Authority
- CN
- China
- Prior art keywords
- shear wall
- energy consumption
- steel
- concrete shear
- steel pipe
- 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
- 239000004567 concrete Substances 0.000 title claims abstract description 46
- 238000005265 energy consumption Methods 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 239000011178 precast concrete Substances 0.000 claims abstract description 36
- 239000011372 high-strength concrete Substances 0.000 claims abstract description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 240000004282 Grewia occidentalis Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a repairable multistage energy consumption dry type mixed assembled concrete shear wall, wherein high-strength steel pipes are buried in edge members of the precast concrete shear wall, and the steel pipes are filled with high-strength concrete; the edge components of the precast concrete shear wall are connected through multistage energy consumption pieces, the multistage energy consumption pieces are connected with the embedded high-strength steel pipes through end plate bolts, and the middle parts of the multistage energy consumption pieces are connected through post-tensioned unbonded prestressed screw-thread steel bars; the multistage energy consumption piece is made of a top plate, a bottom plate, a steel pipe concrete rod body with constraint steel pipes, a connecting plate and energy consumption steel plates with diagonal stiffening ribs, wherein only the energy consumption steel plates are connected with the connecting plate through high-strength bolts, and other rod pieces are welded. The invention establishes the repairable multistage energy-consumption hybrid connection assembled shear wall while realizing dry connection without cast-in-place concrete or grouting construction, has clear working mechanism, excellent anti-seismic performance and obvious technical and economic benefits, and is particularly suitable for popularization and application in earthquake fortification areas.
Description
Technical Field
The invention relates to a repairable multistage energy consumption dry-type mixed assembled concrete shear wall, and belongs to the technical field of assembled concrete shear wall structures of constructional engineering.
Background
The industrial upgrading and reconstruction are needed in the building industry in China, an assembled concrete structure serving as one of important realization ways of building industrialization becomes a research and development hot spot, and an assembled concrete shear wall structure suitable for residential buildings with wide application markets becomes an important research object. Because the earthquake-proof fortification requirements in China are strict, the shear wall structure is generally higher, the prior 'equivalent cast-in-place' fabricated concrete shear wall usually requires edge member concrete to be cast in place, and meanwhile, the vertical steel bar connection of the shear wall is generally in sleeve grouting connection or slurry anchor connection, so that a large amount of concrete pouring, grouting and other wet operations exist on site, the advantages of the precast concrete technology cannot be fully exerted, and the real development of the fabricated concrete shear wall structure is severely restricted.
The middle part of the wall body of the shear wall is connected in a crimping way through post-tensioned unbonded prestressed screw steel bars, and the edge components are connected through multi-stage energy dissipation pieces, so that dry mixed connection is realized, and on-site wet operation is thoroughly avoided; the shear wall edge member realizes high bearing capacity of the wall body by embedding the high-strength steel pipe and pouring high-strength concrete, thereby effectively reducing or avoiding member damage and reducing post-earthquake repair difficulty; the multistage energy dissipation piece utilizes a secondary yield mechanism of the thin steel plate and the steel pipe concrete filled rod body to realize good anti-seismic energy dissipation capacity, and the high bearing capacity of the steel pipe concrete rod body realizes reliable connection of shear wall edge members; the unbonded prestressed twisted steel can be subjected to tensioning after earthquake, or the multistage energy consumption piece can be replaced, so that the efficient post-earthquake repairability is realized, the service life of the structure is prolonged, and the maintenance cost is reduced. The invention forms a technology which can be well applied to areas with earthquake-proof fortification requirements and has obvious technical and economic benefits, and breaks through the existing technical system of the assembled concrete shear wall structure.
Disclosure of Invention
The invention aims to provide a repairable multistage energy consumption dry type mixed assembled concrete shear wall, which breaks through the technical system of the traditional assembled concrete shear wall structure and thoroughly solves the inherent problems of the traditional cast-in-situ assembled concrete shear wall technology.
The invention adopts the technical scheme that: a repairable multistage energy consumption dry type mixed assembled concrete shear wall comprises an upper precast concrete shear wall, a lower precast concrete shear wall, a pre-buried high-strength steel pipe, a middle pre-buried steel pipe, a pre-stressed twisted steel, an end plate and a multistage energy consumption piece;
the upper precast concrete shear wall and the lower precast concrete shear wall are internally provided with embedded high-strength steel pipes respectively, the embedded high-strength steel pipes are filled with high-strength concrete, the upper precast concrete shear wall and the lower precast concrete shear wall are internally provided with through middle embedded steel pipes, the middle embedded steel pipes are internally penetrated with prestressed screw bars, and the upper precast concrete shear wall and the lower precast concrete shear wall are in compression connection through a unbonded post-tensioning process;
the embedded high-strength steel pipe extends out of the concrete surface of the edge member for a certain distance, an end plate is welded, and the upper precast concrete shear wall and the lower precast concrete shear wall are connected with the multistage energy dissipation member through the end plate and the multistage energy dissipation member through bolts at the edge member;
the multistage energy dissipation piece comprises a top plate, a bottom plate and steel pipe concrete rods, wherein the two steel pipe concrete rods are welded between the top plate and the bottom plate, constraint steel pipes which constrain the steel pipe concrete rods and freely slide are sleeved outside the steel pipe concrete rods, energy dissipation steel plates are arranged between the two steel pipe concrete rods, and the energy dissipation steel plates are connected with the top plate, the bottom plate and the steel pipe concrete rods through connecting steel plates arranged at corners through bolts.
Preferably, the energy-consumption steel plate is provided with cross stiffening ribs on two sides along diagonal lines, so that the buckling performance of the energy-consumption steel plate is improved.
Preferably, two sides of the energy consumption steel plate are vertically beveled to provide space for the installation of the constraint steel pipe.
The beneficial effects are that: (1) According to the precast concrete shear wall edge member, the high-strength steel pipe is embedded, and the steel pipe is filled with high-strength concrete, so that the stress performance of the shear wall key stress part-edge member is effectively improved; (2) The energy-consumption steel plate of the multi-stage energy-consumption piece is connected with the energy-consumption piece main body through the four-corner bolts, so that the stress of the energy-consumption steel plate is reasonably simplified, the anti-instability capability of the steel plate is further improved through the stiffening ribs arranged along the opposite angles of the steel plate, and the full play of the energy-consumption capability of the steel plate is ensured; (3) The steel pipe concrete rod body of the multistage energy dissipation piece provides higher bearing capacity, ensures reliable connection of edge members, freely constrains the steel pipe by the outer sleeve, improves the instability resistance of the steel pipe, and further ensures split exertion of the bearing capacity and the energy dissipation capacity of the steel pipe concrete rod body; (4) The unbonded prestressed twisted steel can be subjected to tensioning again after the earthquake, and the multi-stage energy consumption piece can be replaced after the earthquake, so that repairability is realized, and obvious technical and economic benefits are achieved.
Drawings
FIG. 1 is an overall schematic of a shear wall connection of the present invention;
fig. 2 is a schematic diagram of a multi-stage energy consuming device of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1 and 2: a repairable multistage energy consumption dry type mixed assembled concrete shear wall comprises an upper precast concrete shear wall 1, a lower precast concrete shear wall 2, a pre-buried high-strength steel pipe 3, a middle pre-buried steel pipe 4, a pre-stress twisted steel 5, an end plate 6 and multistage energy consumption pieces;
the inside of the upper precast concrete shear wall 1 and the inside of the lower precast concrete shear wall 2 are respectively provided with an embedded high-strength steel pipe 3, the embedded high-strength steel pipes 3 are filled with high-strength concrete, the inside of the upper precast concrete shear wall 1 and the inside of the lower precast concrete shear wall 2 are also provided with a through middle embedded steel pipe 4, the middle embedded steel pipe 4 is internally penetrated with a prestressed screw thread steel bar 5, and the upper precast concrete shear wall 1 and the lower precast concrete shear wall 2 are in pressure connection through a unbonded post-tensioning process;
the embedded high-strength steel pipe 3 extends out of the concrete surface of the edge member for a certain distance, an end plate 6 is welded, and the upper precast concrete shear wall 1 and the lower precast concrete shear wall 2 are connected with the multistage energy dissipation member 7 at the edge member through the end plate 6 by bolts;
the multistage energy dissipation device 7 comprises a top plate 8, a bottom plate 9 and steel pipe concrete rods 10, wherein the two steel pipe concrete rods 10 are welded between the top plate 8 and the bottom plate 9, constraint steel 11 pipes which are used for constraining the steel pipe concrete rods and can slide freely are sleeved outside the steel pipe concrete rods 10, energy dissipation steel plates 12 are arranged between the two steel pipe concrete rods 10, and the energy dissipation steel plates 12 are connected with the top plate 8, the bottom plate 9 and the steel pipe concrete rods 10 through connecting steel plates 13 arranged at corners through bolts. The energy consumption steel plate 12 is provided with the cross stiffening ribs 14 along the diagonal on both sides, the buckling performance of the energy consumption steel plate 12 is improved, grooves 15 are formed on both sides of the energy consumption steel plate 12, and space is provided for the installation of the constraint steel pipe 11.
When the repairable multistage energy consumption dry type mixed assembled concrete shear wall is installed on site, firstly, installing prestressed screw bars on the top of the completed precast concrete shear wall; hoisting the prefabricated shear wall to be installed in place, and enabling the prestressed twisted steel to penetrate through the embedded steel pipe in the middle of the shear wall; tensioning the prestressed twisted steel to enable the stress to reach the design requirement; and finally, installing multi-stage energy consumption pieces to finish the connection operation of the precast concrete shear wall.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit and scope of the invention.
Claims (1)
1. A repairable multistage energy consumption dry-type hybrid assembled concrete shear wall is characterized in that: the device comprises an upper precast concrete shear wall, a lower precast concrete shear wall, a pre-embedded high-strength steel pipe, a middle pre-embedded steel pipe, a pre-stressed twisted steel, an end plate and a multi-stage energy consumption piece;
the upper precast concrete shear wall and the lower precast concrete shear wall are internally provided with embedded high-strength steel pipes respectively, the embedded high-strength steel pipes are filled with high-strength concrete, the upper precast concrete shear wall and the lower precast concrete shear wall are internally provided with through middle embedded steel pipes, the middle embedded steel pipes are internally penetrated with prestressed screw bars, and the upper precast concrete shear wall and the lower precast concrete shear wall are in compression connection through a unbonded post-tensioning process;
the embedded high-strength steel pipe extends out of the concrete surface of the edge member for a certain distance, an end plate is welded, and the upper precast concrete shear wall and the lower precast concrete shear wall are connected with the multistage energy dissipation member through the end plate and the multistage energy dissipation member through bolts at the edge member;
the multistage energy consumption piece comprises a top plate, a bottom plate and steel pipe concrete rods, wherein the two steel pipe concrete rods are welded between the top plate and the bottom plate, constraint steel pipes which constrain the steel pipe concrete rods and freely slide are sleeved outside the steel pipe concrete rods, energy consumption steel plates are arranged between the two steel pipe concrete rods, and the energy consumption steel plates are connected with the top plate, the bottom plate and the steel pipe concrete rods through connecting steel plates arranged at corners through bolts;
the two sides of the energy-consumption steel plate are provided with cross stiffening ribs along diagonal lines;
and grooves are formed in the two sides of the energy consumption steel plate vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711347315.3A CN108104308B (en) | 2017-12-15 | 2017-12-15 | Repairable multistage energy consumption dry-type mixed assembled concrete shear wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711347315.3A CN108104308B (en) | 2017-12-15 | 2017-12-15 | Repairable multistage energy consumption dry-type mixed assembled concrete shear wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108104308A CN108104308A (en) | 2018-06-01 |
| CN108104308B true CN108104308B (en) | 2023-06-09 |
Family
ID=62217123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711347315.3A Active CN108104308B (en) | 2017-12-15 | 2017-12-15 | Repairable multistage energy consumption dry-type mixed assembled concrete shear wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108104308B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108442575B (en) * | 2018-06-04 | 2023-06-16 | 福建工程学院 | Prefabricated lattice combined shear wall assembly monomer and connecting method thereof |
| CN110593417A (en) * | 2018-06-12 | 2019-12-20 | 迈瑞司（北京）抗震住宅技术有限公司 | Assembled shear wall |
| CN110714552A (en) * | 2018-07-13 | 2020-01-21 | 天津大学 | Steel construction assembled shear force wall connection structure |
| CN111321821B (en) * | 2020-02-28 | 2021-06-22 | 南京工程学院 | Adopt prefabricated shear force wall steel bar connection structure tied in a bundle of full assembled level seam |
| CN112832385A (en) * | 2020-12-25 | 2021-05-25 | 黑龙江中晟绿色建筑产业发展有限公司 | Round steel tube concrete longitudinal connecting device of assembled shear wall |
| CN114351889A (en) * | 2020-12-25 | 2022-04-15 | 珠海动和工程咨询有限公司 | Assembled shear force wall unit |
| CN114277955A (en) * | 2020-12-25 | 2022-04-05 | 珠海动和工程咨询有限公司 | Connecting device between assembled shear wall units |
| CN114277943A (en) * | 2020-12-25 | 2022-04-05 | 珠海动和工程咨询有限公司 | Assembled shear wall structure |
| CN112709349A (en) * | 2020-12-25 | 2021-04-27 | 黑龙江中晟绿色建筑产业发展有限公司 | Assembled shear force wall of longitudinal tie bar in both sides of circular steel tube concrete |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07207780A (en) * | 1994-01-14 | 1995-08-08 | Taisei Corp | Work execution method for prestress precast concrete large beam |
| CN102900153A (en) * | 2012-10-25 | 2013-01-30 | 中国十七冶集团有限公司 | Three-dimensional lead extrusion bearing capable of insulating shock and dissipating energy |
| CN103104053A (en) * | 2013-03-08 | 2013-05-15 | 郑州大学 | Assembled concrete shear wall and construction method thereof |
| CN103397721A (en) * | 2013-08-12 | 2013-11-20 | 南京工业大学 | Steel plate precast concrete double-plate shear wall |
| CN103510639A (en) * | 2013-10-15 | 2014-01-15 | 合肥工业大学 | Overlapped plate type shear wall with restorability and constructing method thereof |
| CN103790267A (en) * | 2014-02-19 | 2014-05-14 | 天津大学建筑设计研究院 | Reinforcement type prefabricated assembly type shear wall structure and construction method thereof |
| CN104878852A (en) * | 2015-05-12 | 2015-09-02 | 东南大学 | Frictional energy dissipation self-centering shear wall structure with easily restored bottom |
| CN105544790A (en) * | 2016-01-29 | 2016-05-04 | 中民筑友有限公司 | Assembly type wallboard structure system |
| CN106245820A (en) * | 2016-09-22 | 2016-12-21 | 东南大学 | It is a kind of that segmentation prestressing force Self-resetting damage concentration is prefabricated waves shear wall |
| CN106639037A (en) * | 2017-01-23 | 2017-05-10 | 青岛理工大学 | Energy-dissipation and shock-absorption oblique prestressed shear wall structure system suitable for prefabricated assembly |
| CN107355010A (en) * | 2017-08-21 | 2017-11-17 | 南京工业大学 | Precast concrete shear wall shaped steel node connection structure |
| CN207794368U (en) * | 2017-12-15 | 2018-08-31 | 南京工业大学 | Repairable multistage energy-consumption dry-type hybrid fabricated concrete shear wall |
-
2017
- 2017-12-15 CN CN201711347315.3A patent/CN108104308B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07207780A (en) * | 1994-01-14 | 1995-08-08 | Taisei Corp | Work execution method for prestress precast concrete large beam |
| CN102900153A (en) * | 2012-10-25 | 2013-01-30 | 中国十七冶集团有限公司 | Three-dimensional lead extrusion bearing capable of insulating shock and dissipating energy |
| CN103104053A (en) * | 2013-03-08 | 2013-05-15 | 郑州大学 | Assembled concrete shear wall and construction method thereof |
| CN103397721A (en) * | 2013-08-12 | 2013-11-20 | 南京工业大学 | Steel plate precast concrete double-plate shear wall |
| CN103510639A (en) * | 2013-10-15 | 2014-01-15 | 合肥工业大学 | Overlapped plate type shear wall with restorability and constructing method thereof |
| CN103790267A (en) * | 2014-02-19 | 2014-05-14 | 天津大学建筑设计研究院 | Reinforcement type prefabricated assembly type shear wall structure and construction method thereof |
| CN104878852A (en) * | 2015-05-12 | 2015-09-02 | 东南大学 | Frictional energy dissipation self-centering shear wall structure with easily restored bottom |
| CN105544790A (en) * | 2016-01-29 | 2016-05-04 | 中民筑友有限公司 | Assembly type wallboard structure system |
| CN106245820A (en) * | 2016-09-22 | 2016-12-21 | 东南大学 | It is a kind of that segmentation prestressing force Self-resetting damage concentration is prefabricated waves shear wall |
| CN106639037A (en) * | 2017-01-23 | 2017-05-10 | 青岛理工大学 | Energy-dissipation and shock-absorption oblique prestressed shear wall structure system suitable for prefabricated assembly |
| CN107355010A (en) * | 2017-08-21 | 2017-11-17 | 南京工业大学 | Precast concrete shear wall shaped steel node connection structure |
| CN207794368U (en) * | 2017-12-15 | 2018-08-31 | 南京工业大学 | Repairable multistage energy-consumption dry-type hybrid fabricated concrete shear wall |
Non-Patent Citations (1)
| Title |
|---|
| 暗柱配置1000 MPa级高强钢筋混凝土剪力墙抗震性能研究;李振宝;宋优优;张辉明;解咏平;马华;;工业建筑(12);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108104308A (en) | 2018-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108104308B (en) | Repairable multistage energy consumption dry-type mixed assembled concrete shear wall | |
| CN214116984U (en) | Assembled concrete anti-seismic beam column connecting node | |
| CN202831402U (en) | Concrete filled steel tubular column with inner-connected circular pipe and outer-sleeved concrete filled steel tube | |
| CN109403509B (en) | Assembled composite shear wall based on self-assembled composite end column-slurry anchor shear wall | |
| CN103498570A (en) | Floor-adding transformation structure inside old factory building and construction method thereof | |
| CN103993679A (en) | Bolt connecting joint structure of low-rise fabricated composite wall house | |
| CN103924680A (en) | Precast concrete beam and square-rectangular concrete-filled steel tube column combining joint employing unbonded prestressed and ordinary reinforcement for connection | |
| CN206328893U (en) | A kind of new vertical piece dry type connection shear wall | |
| CN202416260U (en) | Transverse prestressed reinforced structure of concrete aqueduct | |
| CN203684457U (en) | Light assembled shear wall structure | |
| CN110409647B (en) | Easily-repaired assembled concrete frame ductility energy dissipation node with single-side yield | |
| CN210002942U (en) | transformation structure of old building brick column | |
| CN207794368U (en) | Repairable multistage energy-consumption dry-type hybrid fabricated concrete shear wall | |
| CN114277943A (en) | Assembled shear wall structure | |
| CN203546944U (en) | Assembly type shear wall | |
| CN203603523U (en) | Structure for transforming inner portion of old factory building in floor adding mode | |
| CN203700976U (en) | Prestressed section steel reinforcement system of ferroconcrete arch shell bridge | |
| CN202610830U (en) | Bracket type material-blocking wall and umbrella-shaped roof | |
| CN202500219U (en) | Prefabricated concrete-frame elevator shaft enclosed by plastic-steel plates | |
| CN102041785B (en) | Pier steel-concrete composite structure column beam | |
| CN103938732A (en) | Combination joint of prefabricated concrete beam and rectangular concrete filled steel tubular column connected through pre-stressed steel bars and common steel bars | |
| CN210264016U (en) | Assembled antidetonation reinforced structure of brick concrete structure wall body | |
| CN209742152U (en) | Assembled composite shear wall based on self-resetting combined end column slurry anchor shear wall | |
| CN113431374A (en) | Indoor shockproof reinforcement customized steel frame for existing building | |
| CN201865058U (en) | Embracing column beam with pier steel-concrete composite structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |