CN109629670A - A kind of assembled Self-resetting double flute steel girder frame system of recoverable function - Google Patents
A kind of assembled Self-resetting double flute steel girder frame system of recoverable function Download PDFInfo
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- CN109629670A CN109629670A CN201910071722.9A CN201910071722A CN109629670A CN 109629670 A CN109629670 A CN 109629670A CN 201910071722 A CN201910071722 A CN 201910071722A CN 109629670 A CN109629670 A CN 109629670A
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- beam section
- channel steel
- pipe column
- steel pipe
- cantilever beam
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
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- 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
-
- 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
- E04H9/024—Structures with steel columns and beams
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The present invention relates to a kind of assembled Self-resetting double flute steel girder frame systems of recoverable function, belong to structural engineering field.The system is by two quadrate steel pipe columns with cantilever beam section, a channel steel beam section, one group of automatic runback device to form with two groups of attachment devices.Channel steel beam section is spliced using double flute steel, need to only be connected by high-strength bolt, the more conducively development of fabricated construction；It is arranged to the board-like progress edge of a wing cover board buckling amplitude of inner cover using anti-buckling theory top flange inner cover plate to control；It is board-like that lower flange outer cover plate is arranged to outer cover, the with good performance visual and replacement property sentenced；Automatic runback device can guarantee the predetermined condition design object of structure dissipation seismic energy and reduce rehabilitation cost after shake；The destruction position of seismic loading flowering structure can be made to occur at the dissipative members such as the high-strength bolt and connecting plate being easily changed by targeted design, convenient for repairing after shake.
Description
Technical field
This patent is related to a kind of assembled Self-resetting double flute steel girder frame system of recoverable function, belongs to Structural Engineering skill
Art field.
Background technique
With the quickening of urbanization process, the development of building field and technical level are constantly promoted, in addition environmental pollution and
The defect of the influence of problem of resource waste, feature of environmental protection difference existing for traditional architecture system gradually exposes, green assembling type steel structure,
Start to become the main Types of building system.Compared with traditional system, the system construction quality, in terms of,
All have significant advantage." playing with building blocks " is a kind of representative construction method, largely accelerates speed of application,
Engineering funds are saved.It applies it in the design and development of all kinds of building systems, is the main of building field future development
Trend.
Unreasonable structural design will lead to the occurrence of " strong component weak bus ", issue structure in seismic loading
Raw serious earthquake, threatens people life property safety.Existing research shows that carrying out specific aim reinforcement to structure or to specific on beam
Region takes weakening means to can reach the purpose of plastic hinge, to protect bean column node, meets " the strong weak component of node "
Design requirement；Meanwhile floor and beam section it is pre-assembled after be transported to construction site carry out assembly can greatly save cast-in-place concrete
Time；In addition, can restore using the recoverable function structure of function to be in recent years without repairing or slightly repairing after earthquake
The research hotspot of International Seismic engineering field can not only protect the security of the lives and property of people in earthquake, and in earthquake
It can also be restored as early as possible afterwards using function, therefore need to implement the theory of recoverable function structure into the R & D design in new construction
In work, with realize building from it is single pursuit collapse resistant capacity to take into account shake after can repair ability transformation.To meet the above need
It asks, the invention patent proposes a kind of assembled Self-resetting double flute steel girder frame system of recoverable function.
The invention patent propose a kind of recoverable function assembled Self-resetting double flute steel girder frame system, the system by
Two quadrate steel pipe columns with cantilever beam section, a channel steel beam section, one group of automatic runback device and attachment device composition.Band cantilever beam section
Quadrate steel pipe column by upper quadrate steel pipe column, middle quadrate steel pipe column, lower quadrate steel pipe column, top side's shape annular partition, lower part side's shape annular every
A tooling in plate, cantilever beam section web and automatic runback device is welded.Upper quadrate steel pipe column, middle quadrate steel pipe column respectively with
The welding of top side's shape annular partition；Lower quadrate steel pipe column, middle quadrate steel pipe column are welded with lower part side's shape annular partition respectively；Cantilever beam section
Web is welded with top side's shape annular partition, middle quadrate steel pipe column and lower part side's shape annular partition respectively；The attachment device by
Top flange inner cover plate, channel steel beam section top flange backing plate, lower flange outer cover plate, inverted L shape web cutting member and high-strength bolt group
At；Automatic runback device is connected with prestress wire by two toolings and is formed.
Summary of the invention
The present invention proposes a kind of assembled Self-resetting double flute steel girder frame system of recoverable function, belongs to Structural Engineering skill
Art field.The welding of nodal connection device, channel steel beam section is pre-assembled completes in factory, and weld seam and component quality are more easily-controllable
System, speed of application are greatly improved with quality.
A kind of assembled Self-resetting double flute steel girder frame system of recoverable function is by two square steel tubes with cantilever beam section
Column, a channel steel beam section, one group of automatic runback device and attachment device composition；The attachment device is recoverable function after a kind of shake
Attachment device；By Reasonable Parameters design so that plastic failure occurs in splice region, and it is basic in bean column node rest part
Elasticity is kept, only need to replace attachment device can restore the use function of main structure after shake；In top flange inner cover plate is arranged to
Cover-plate type can make concrete outside top flange smooth, while the buckling of top flange inner cover plate can be realized by inverted L shape web cutting member
Deformation control, and lower flange outer cover plate is arranged to that outer cover is board-like, can be used as the rest of channel steel beam section during the installation process, while
Edge of a wing connecting plate bending deformation is observed in use convenient for node, with good performance visual and replacement can
The property sentenced；Cantilever beam section should be held out against with channel steel beam section, be left no gaps after installation, and drag-line pretension caused by rotating due to beam-ends is prevented
Loss；Self-resetting after the shake of structure is realized by adding automatic runback device, is reduced residual deformation, is delayed the main stress of structure
Component damage process guarantees the predetermined condition design object of structure dissipation seismic energy ability and reduces rehabilitation cost after shake, is steel
The new direction of structural development, channel steel beam section are spliced using double flute steel, need to only be connected by high-strength bolt, more conducively assembled
The development of structure.
The quadrate steel pipe column with cantilever beam section is by upper quadrate steel pipe column, middle quadrate steel pipe column, lower quadrate steel pipe column, top side's shape
Annular partition, a tooling in lower part side's shape annular partition, cantilever beam section web and automatic runback device are welded；Top
Square shape annular partition, lower part side's shape annular partition interior square chi cun be respectively less than square chi cun in quadrate steel pipe column, foreign side's size is all larger than
Quadrate steel pipe column foreign side size, and square shape annular partition thickness is greater than channel steel beam section edge of a wing thickness；The attachment device is by upper limb
Edge inner cover plate, top flange backing plate, lower flange outer cover plate, inverted L shape web cutting member and high-strength bolt composition；Automatic runback device
It is connected and is formed with prestress wire by two toolings.
A kind of assembled Self-resetting double flute steel girder frame system of recoverable function, first will be outside lower flange in construction and installation
Cover board is connect by bolt with lower part side's shape annular partition, and beam section is shelved on overhanging lower flange outer cover plate, then by cantilever beam
The web of section is connect by inverted L shape web cutting member with beam section web, then connects top flange inner cover plate and backing plate, wherein backing plate
It is close to channel steel beam section top flange lower surface, steel strand wires are finally installed and applies prestressing force.
Lower flange outer cover plate is first passed through bolt and lower part side's shape annular partition in construction and installation by the attachment device
Connection, beam section is shelved on overhanging lower flange outer cover plate, then the web of cantilever beam section is passed through inverted L shape web cutting member and beam
Section web connection, then connects top flange inner cover plate and backing plate, and wherein backing plate is close to channel steel beam section top flange lower surface, finally pacifies
Steel loading twisted wire simultaneously applies prestressing force.
The advantages of this patent, is mainly manifested in the following aspects:
1, nodal connection device welding portion of the invention is completed in factory, and weld seam precision and quality is more easily-controllable
The quadrate steel pipe column with cantilever beam section and channel steel beam section are assembled only with high-strength bolt, connecting plate and connector in system, scene,
The fastening work of bolt is convenient and efficient, improves speed of application and construction quality, and channel steel beam section is spliced using double flute steel, only
It need to be connected by high-strength bolt, adapt to the development of assembling type steel structure.
2, the nodal connection device of this patent is a kind of attachment device of recoverable function after shake, and top flange inner cover plate is set
It is board-like to be set to inner cover, concrete outside top flange can be made more smooth；And to be arranged to outer cover board-like for lower flange outer cover plate, can be used as work
The rest of word beam during the installation process, while being also convenient for node and edge of a wing cover board bending deformation is observed in use,
The with good performance visual and replacement property sentenced.Using the design of inverted L shape web cutting member, using anti-buckling theory,
By holding out against with the contact on the inverted L shape web cutting member edge of a wing and can propose enough supports for the edge of a wing cover board after inner cover bucking of plate of top flange
Power control effectively to the buckling amplitude of top flange inner cover plate, while can improve the energy dissipation capacity of beam-column connection, envoy
Point bearing capacity is more stable.Node plastic failure may make to occur in splice region by Reasonable Parameters design, and cantilever beam section, slot
Girder steel section keeps elasticity substantially, and only need to replace attachment device can restore the use function of main structure after shake.In reinforcing
The wall thickness of quadrate steel pipe column and increase side's shape annular partition thickness, to realize effective reinforcement to Column border node domain and cantilever beam section；It is logical
It crosses and edge of a wing cover board setting circular arc dog bone weakening area or the shearing weakening area that punches is reached with realizing effective weakening of bonding pad
The purpose of plastic hinge.
3, attachment device of the invention is Self-resetting attachment device, can realize self-resetting, reduction remnants after structure shake
It deforms, structure main bearing member is delayed to damage process, guarantee the predetermined condition design object of structure dissipation seismic energy and drop
Rehabilitation cost after low shake is the new direction of steel construction development.
4, automatic runback device is connected with prestress wire by two toolings and is formed, what cover board and prestress wire were formed
Automatic runback device is compared with traditional drag-line automatic runback device, in the identical situation of prestress wire pretension, using runback
The total bearing capacity of the beam of position device can be higher；In the identical situation of bearing capacity of beam, the prestress steel twist of automatic runback device
Line pretension demand can reduce, and avoid prestress wire pretension to the overstressing load of channel steel beam section；It is pre- by applying
Prestress steel strand pretension, the accumulation of the development and damage that are plastically deformed structure control make structure have good shock resistance
Energy and reset capability.
Detailed description of the invention
Fig. 1 is a kind of three-dimensional figure of the structural form of the assembled Self-resetting double flute steel girder frame system of recoverable function；
Fig. 2 is a kind of three-dimensional scene of the structural form of the assembled Self-resetting double flute steel girder frame system of recoverable function
Installation diagram；
Fig. 3 is a kind of front view of the structural form of the assembled Self-resetting double flute steel girder frame system of recoverable function；
Fig. 4 is a kind of side view of the structural form of the assembled Self-resetting double flute steel girder frame system of recoverable function；
Fig. 5 is a kind of 1-1 section of the structural form of the assembled Self-resetting double flute steel girder frame system of recoverable function
Figure；
Fig. 6 is a kind of top view of the structural form of the assembled Self-resetting double flute steel girder frame system of recoverable function；
Fig. 7 is a kind of top flange inner cover plate structure shape of the assembled Self-resetting double flute steel girder frame system of recoverable function
The top view of formula；
Fig. 8 is a kind of lower flange outer cover plate structure shape of the assembled Self-resetting double flute steel girder frame system of recoverable function
The top view of formula.
Specific embodiment
With reference to the accompanying drawing, the embodiment of this patent is described in detail.
As shown in figures 1 to 6, a kind of assembled Self-resetting double flute steel girder frame system of recoverable function includes with lower component:
1 --- upper quadrate steel pipe column；
2 --- middle quadrate steel pipe column；
3 --- lower quadrate steel pipe column；
4 --- top side's shape annular partition；
5 --- lower part side's shape annular partition；
6 --- cantilever beam section web；
7 --- inverted L shape web cutting member；
8 --- top flange inner cover plate；
9 --- lower flange outer cover plate；
10 --- channel steel beam section top flange backing plate；
11 --- channel steel；
12 --- tooling；
13 --- prestress wire.
As shown in figures 1 to 6, band cantilever beam section quadrate steel pipe column is by upper quadrate steel pipe column 1, middle quadrate steel pipe column 2, lower quadrate steel pipe column 3,
Top side's shape annular partition 4, lower part side's shape annular partition 5, cantilever beam section web 6, a tooling 12 is welded in automatic runback device
It forms.Upper quadrate steel pipe column 1, middle quadrate steel pipe column 2 are welded with top side's shape annular partition 4 respectively；Lower quadrate steel pipe column 3, middle square steel tube
Column 2 is welded with lower part side's shape annular partition 5 respectively；Cantilever beam section web 6 respectively with top side's shape annular partition 4, middle square steel tube
Column 2 and lower part side's shape annular partition 5 weld.Top side's shape annular partition 4, the interior ring size of lower part side's shape annular partition 5 are small
In ring size in quadrate steel pipe column, outer annular diameter is greater than quadrate steel pipe column outer ring size, and annular partition thickness is greater than channel steel beam section
Edge of a wing thickness, channel steel beam section are spliced using double flute steel 11, are connected by high-strength bolt.
As shown in Figure 1, 2, top side's shape annular partition 4 is connected with channel steel beam section top flange by high-strength bolt；Lower part
Square shape annular partition 5 is connected with channel steel beam section lower flange by high-strength bolt；Cantilever beam section web 6 and the shearing of inverted L shape web
Part 7 is connected by high-strength bolt；Channel steel beam section top flange backing plate 10 is connected with channel steel beam section top flange by high-strength bolt；
Top flange inner cover plate 8, lower flange outer cover plate 9 are connect with the channel steel beam section edge of a wing by high-strength bolt.
As shown in Fig. 2, at the scene in installation process, first by lower flange outer cover plate 9 by high-strength bolt and lower annular every
Plate 5 connects, and channel steel beam section is shelved on overhanging lower flange outer cover plate 9, then the web of cantilever segment is sheared by inverted L shape web
Part 7 is connect with channel steel beam section web, then connects top flange inner cover plate 8 and channel steel beam section top flange backing plate 10, wherein steel channel beam
Section top flange backing plate 10 is close to channel steel beam section top flange lower surface, finally installs automatic runback device prestress wire 13 and applies
Pretightning force.
If Fig. 7,8 are respectively a kind of edge of a wing connecting plate of the assembled Self-resetting double flute steel girder frame system of recoverable function
Structural form.Top flange inner cover plate 8, the settable circular arc dog bone of lower flange outer cover plate 9 weaken area and the shearing that punches weakens two kinds of area
Form.
Claims (3)
1. a kind of assembled Self-resetting double flute steel girder frame system of recoverable function, it is characterised in that: the system is by two bands
The quadrate steel pipe column of cantilever beam section, a channel steel beam section, one group of automatic runback device with two groups of attachment devices to form；The band is outstanding
The quadrate steel pipe column of arm beam section includes a cantilever beam section, upper a quadrate steel pipe column, a middle square steel tube contour with cantilever beam section
Column, a lower quadrate steel pipe column, upper quadrate steel pipe column and lower quadrate steel pipe column are respectively welded in two cantilever beam sections, upper quadrate steel pipe column and
Lower quadrate steel pipe column is respectively welded at the top and bottom of middle quadrate steel pipe column, and cantilever beam section is by top side's shape annular partition, one
A lower part side's shape annular partition and cantilever beam section web are welded；Wherein, top side's shape annular partition and lower part side's shape annular
Partition is all divided into three parts, respectively square shape ring part, circular sliding slopes section part, edge of a wing section part；Square shape annular portion is allocated as
For the reinforcing section of nodes domains, circular sliding slopes section part be used as beam end haunch part, the edge of a wing section part as with channel steel beam section
Splicing part；Bottom wing listrium and middle pectoral plate are welded in factory；The wall thickness of the middle quadrate steel pipe column should be greater than top
The wall thickness of steel pipe column and lower quadrate steel pipe column, the ratio between side's shape annular partition thickness and channel steel beam section edge of a wing thickness should be greater than 1.3；
Quadrate steel pipe column with cantilever beam section is connected with channel steel beam section by attachment device, and is not left a blank between cantilever beam section and channel steel beam section
Gap；The channel steel beam section is assembled by two sections of channel steels, and two sections of channel steel waists are linked together by high-strength bolt；From
Resetting apparatus is connected with prestress wire by two toolings and is formed, and wherein tooling is welded at the cantilever beam section starting the arc.
2. a kind of assembled Self-resetting double flute steel girder frame system of recoverable function according to claim 1, feature
Be: the attachment device includes two top flange inner cover plates, two panels channel steel beam section top flange backing plate, a lower flange outer cover
Plate, two inverted L shape web cutting members and high-strength bolt, two top flange inner cover plates are located on the inside of channel steel beam section top flange, point
It is listed in channel steel beam section web two sides to be arranged symmetrically, top flange inner cover plate and lower flange outer cover plate are used for connecting cantilever beam section and channel steel
Lower flange in beam section, top flange inner cover plate are close to channel steel beam section top flange backing plate and cantilever beam section upper flange, lower flange outer cover plate
It is close to cantilever beam section and channel steel beam section lower flange, inverted L shape web cutting member is used for connecting cantilever beam section web and channel steel beam section abdomen
Plate, two panels channel steel beam section top flange backing plate are close to channel steel beam section top flange, make the wing at cantilever beam section and channel steel beam section link position
Edge height is identical, then is connected cantilever beam section and channel steel beam section top flange by top flange inner cover plate.
3. a kind of assembled Self-resetting double flute steel girder frame system of recoverable function according to claim 1, feature
Be: top flange inner cover plate and lower flange inner cover plate in the attachment device are arranged to circular arc dog bone and weaken area or punch
Shearing weakens area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071722.9A CN109629670A (en) | 2019-01-25 | 2019-01-25 | A kind of assembled Self-resetting double flute steel girder frame system of recoverable function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910071722.9A CN109629670A (en) | 2019-01-25 | 2019-01-25 | A kind of assembled Self-resetting double flute steel girder frame system of recoverable function |
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| CN109629670A true CN109629670A (en) | 2019-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593405A (en) * | 2019-10-08 | 2019-12-20 | 西安建筑科技大学 | Single-side-reaming T-shaped connection replaceable beam connection structure and connection method |
| CN113982113A (en) * | 2021-12-03 | 2022-01-28 | 上海泰大建筑科技有限公司 | Three-section beam and column structure and combined frame type structure thereof |
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| CN109057014A (en) * | 2018-07-22 | 2018-12-21 | 北京工业大学 | Self-resetting can assemble multistage joist steel frame after shake |
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| CN103088918A (en) * | 2013-02-05 | 2013-05-08 | 北京建筑工程学院 | Novel prefabricate prestressed steel frame girder-column pitch point with post-earthquake self-reset function |
| CN103669570A (en) * | 2013-12-19 | 2014-03-26 | 北京工业大学 | Special-shaped steel column-prestress central supporting frame easy to restore after earthquake |
| CN206052956U (en) * | 2016-08-31 | 2017-03-29 | 江西杭萧钢构有限公司 | A kind of H types cantilever beam-column splicing construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593405A (en) * | 2019-10-08 | 2019-12-20 | 西安建筑科技大学 | Single-side-reaming T-shaped connection replaceable beam connection structure and connection method |
| CN113982113A (en) * | 2021-12-03 | 2022-01-28 | 上海泰大建筑科技有限公司 | Three-section beam and column structure and combined frame type structure thereof |
| CN113982113B (en) * | 2021-12-03 | 2023-08-11 | 上海泰大建筑科技有限公司 | Three-section beam and column structure and combined frame type structure thereof |
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Application publication date: 20190416 |