CN110258817A - A kind of parallel-moving type precast concrete out-hung panel connect the structure and construction method of load-bearing node with girder steel - Google Patents
A kind of parallel-moving type precast concrete out-hung panel connect the structure and construction method of load-bearing node with girder steel Download PDFInfo
- Publication number
- CN110258817A CN110258817A CN201910515673.3A CN201910515673A CN110258817A CN 110258817 A CN110258817 A CN 110258817A CN 201910515673 A CN201910515673 A CN 201910515673A CN 110258817 A CN110258817 A CN 110258817A
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- plate
- steel
- precast concrete
- hung panel
- anchor
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 117
- 239000010959 steel Substances 0.000 title claims abstract description 117
- 239000011178 precast concrete Substances 0.000 title claims abstract description 54
- 238000010276 construction Methods 0.000 title claims abstract description 13
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 230000002265 prevention Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- E04B1/38—Connections for building structures in general
-
- 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
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The present invention relates to a kind of parallel-moving type precast concrete out-hung panels to connect the structure and construction method of load-bearing node with girder steel, including precast concrete out-hung panel, pre-buried structure is installed in concrete floor, the bottom plate of steel corbel is connected by the top of fixed structure and pre-buried structure, and the bottom of pre-buried structure is fixedly connected with the top flange of girder steel；The side wall of steel corbel is fixedly connected by connection structure with precast concrete out-hung panel；The present invention is that parallel-moving type precast concrete out-hung panel load-bearing node proposes a kind of new way, convenient for that can improve the performances such as waterproof, sound insulation at connecting node while construction and installation again.
Description
Technical field
The present invention relates to a kind of parallel-moving type precast concrete out-hung panels to connect the structure and construction of load-bearing node with girder steel
Method belongs to fabricated construction technical field.
Background technique
Precast concrete out-hung panel is suitable for the exterior wall engineering of industry with civil buildings, is widely used in coagulation in foreign countries
In native frame structure, the public building of steel construction, residential housing and industrial building.In recent years, precast concrete out-hung panel existed
The country has also obtained a degree of application.
According to the difference of motor pattern, precast concrete out-hung panel can be divided into rotary, parallel-moving type, fixed.Wherein
Rotary out-hung panel is mainly used for class public building of handling official business, and main structure is under wind load or geological process, out-hung panel
Plane internal rotation can occur, generate rotary displacement relative to girder steel, packing material is then because plug-in between wallboard and main structure
There is the risk loosened in the rotation of wallboard repeatability, for waterproof at later period gap, sound insulation, Smoke prevention processing there are hidden danger, having can
The building that upper and lower level resident in future can be influenced uses function.Therefore rotary out-hung panel Japan for waterproof, sound insulation,
Using less in the more demanding house class building of Smoke prevention, it is mainly used for class public building of handling official business.
So in residential housing field, parallel-moving type wallboard relative to lower layer girder steel and floor without relative displacement, under wallboard
The gap later period can be used cement mortar and tamp between end and floor, and the waterproof, sound insulation, Smoke prevention problem between upper and lower family can be solved effectively
Certainly.But precast concrete out-hung panel is applied seldom in China's steel construction at present, lacks relative configurations way；Therefore it needs
A kind of parallel-moving type panel structure makes prefabricated out-hung panel that can be well used in housing building of steel-structure.
Summary of the invention
The present invention provides the structure and construction that a kind of parallel-moving type precast concrete out-hung panel connect load-bearing node with girder steel
Method proposes a kind of new way for parallel-moving type panel structure, convenient for can improve at connecting node while construction and installation again
The performances such as waterproof, sound insulation.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of parallel-moving type precast concrete out-hung panel connect the structure of load-bearing node, including the plug-in wall of precast concrete with girder steel
Plate installs pre-buried structure in concrete floor, and the bottom plate of steel corbel is connected by the top of fixed structure and pre-buried structure, in advance
The bottom for burying structure is fixedly connected with the top flange of girder steel；
The side wall of steel corbel is fixedly connected by connection structure with precast concrete out-hung panel；
Fixed structure above-mentioned includes junction steel plate, opens up big hole in the bottom plate center of steel corbel, bolt sequentially passes through
It offsets at the top of big hole, junction steel plate and pre-buried structure；
Connection structure above-mentioned includes four vertical anchor bars being laid in precast concrete out-hung panel and two transverse directions
Anchor bar, steel corbel are divided into two parts by web, and part of it is embedded in precast concrete out-hung panel, and steel corbel
Putting in the part in precast concrete out-hung panel, there are two ends, are X to where web with plane where the bottom plate of steel corbel
Plane is Y-direction, and the plane that two lateral anchor bars are constituted is parallel with web, and two lateral anchor bars are also cross steel ox
Leg puts in two ends in precast concrete out-hung panel；
It further include two pieces of anchor end plates, the plate face of anchor end plate is parallel with Y-direction, it is separately fixed at two end points, anchor end plate,
Form I-shaped structure between end that steel corbel is put in precast concrete out-hung panel, lateral anchor bar, altogether there are two
I-shaped structure, Z-direction is embedded in two vertical anchor bars in each I-shaped structure；
As present invention further optimization, pre-buried structure above-mentioned include the anchor plate that is embedded in concrete floor and
Embedded bar, the bottom of junction steel plate contact fixation, the underrun embedded bar and steel of anchor plate with anchor plate surface
The top flange of beam is fixed, and embedded bar is vertical with the top flange of anchor plate, girder steel simultaneously；
Anchor plate is connect with embedded bar by plug welding；
As present invention further optimization, there are gaps between the bottom plate and junction steel plate of steel corbel, plug in gap U-shaped
Gasket；
It is arranged backing plate on the big hole side bolt opposite with junction steel plate, while being arranged nut on bolt, nut and pad
Plate is in contact；
As present invention further optimization, through-hole is opened up in junction steel plate center, through-hole and big hole are coaxially disposed, spiral shell
Bolt sequentially passes through big hole, through-hole；
As present invention further optimization, kept off between the bottom plate and anchor plate of steel corbel by fillet weld vertical welding
Plate.
A kind of parallel-moving type precast concrete out-hung panel connect the construction method of load-bearing node, including following step with girder steel
It is rapid:
Anchor plate is welded in the top flange of girder steel by embedded bar, junction steel plate is by three face weld all around of fillet weld in anchoring
On steel plate；
Casting concrete floor reaches preset intensity；
The bottom end of bolt is welded in the through-hole of junction steel plate by plug welding；
Hoisting prefabricated concrete and hung wallboard is in place, the top of bolt is sequentially passed through to the big hole of steel corbel bottom center, together
When horizontal location and vertical positioning are carried out to precast concrete out-hung panel；
It is inserted into a certain number of filling pads between junction steel plate top and the bottom plate of steel corbel, gap is tamped；
Backing plate is inserted in from the top of bolt, tightening nut；
Baffle one end is welded on steel corbel bottom plate by fillet weld, the other end is welded on pre-embedded steel slab, prevents filling pad
It falls off.
By above technical scheme, compared with the existing technology, the invention has the following advantages:
1, the present invention realizes the hinged of precast concrete out-hung panel and girder steel, and node can be protected while having weight-bearing function
Hold with the consistent deformation of main structure, meet parallel-moving type precast concrete out-hung panel load-bearing node load-bearing and displacement demand；
2, structure setting of the invention adopts the gap later period between the lower end and floor of precast concrete out-hung panel
It is tamped with cement mortar, and then ensure that the waterproof between upper and lower family, sound insulation and Smoke prevention problem；
3, the setting of fixed structure, pre-buried structure, certain level can be had during installation by realizing precast concrete out-hung panel
Error permission and vertical elevation are controllable, are convenient for in-site installation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the overall structure diagram of the preferred embodiment of the present invention；
Fig. 2 is the fixed structure schematic diagram of the preferred embodiment of the present invention；
Fig. 3 is the attachment structure schematic diagram of the preferred embodiment of the present invention；
Fig. 4 is the top view of the pre-buried structure of the preferred embodiment of the present invention；
Fig. 5 is the side view of the pre-buried structure of the preferred embodiment of the present invention.
In figure: 1 is precast concrete out-hung panel, and 2 be steel corbel, and 3 be vertical anchor bar, and 4 be lateral anchor bar,
5 be bolt, and 6 be nut, and 7 be backing plate, and 8 be anchor plate, and 9 be embedded bar, and 10 be filling pad, and 11 be junction steel plate, and 12 are
Baffle, 13 be concrete floor, and 14 be girder steel, and 15 be anchor end plate.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As Figure 1-Figure 4, the present invention includes following characteristics component: 1 is precast concrete out-hung panel, and 2 be steel corbel,
3 be vertical anchor bar, and 4 be lateral anchor bar, and 5 be bolt, and 6 be nut, and 7 be backing plate, and 8 be anchor plate, and 9 be pre-buried steel
Muscle, 10 be filling pad, and 11 be junction steel plate, and 12 be baffle, and 13 be concrete floor, and 14 be girder steel, and 15 be anchor end plate.
A kind of parallel-moving type precast concrete out-hung panel of the invention connect the structure of load-bearing node with girder steel, including prefabricated
Concrete and hung wallboard, installs pre-buried structure in concrete floor, and the bottom plate of steel corbel passes through fixed structure and pre-buried structure
Top connection, the bottom of pre-buried structure is fixedly connected with the top flange of girder steel；
The side wall of steel corbel is fixedly connected by connection structure with precast concrete out-hung panel；
Embodiment 1:
Shown in Fig. 2, fixed structure includes junction steel plate, opens up big hole in the bottom plate center of steel corbel, bolt is sequentially worn
It crosses at the top of big hole, junction steel plate and pre-buried structure and offsets；
There are gaps between the bottom plate and junction steel plate of steel corbel, and filling pad is plugged in gap；
It is arranged backing plate on the big hole side bolt opposite with junction steel plate, while being arranged nut on bolt, nut and pad
Plate is in contact；
Through-hole is opened up in junction steel plate center, through-hole and big hole are coaxially disposed, and bolt sequentially passes through big hole, through-hole；
The setting of bolt, and filling pad is plugged in gap between steel corbel bottom plate and junction steel plate, it may be implemented prefabricated mixed
Solidifying soil out-hung panel horizontal direction and vertical positioning, that is to say, that can permit precast concrete out-hung panel in horizontal direction
Error permission, and in the controllable of vertical elevation.
Embodiment 2:
Shown in Fig. 3, connection structure includes the four vertical anchor bars and two cross being laid in precast concrete out-hung panel
To anchor bar, steel corbel is divided into two parts by web, and part of it is embedded in precast concrete out-hung panel, and steel ox
Leg puts in the part in precast concrete out-hung panel there are two end, is X to web institute with plane where the bottom plate of steel corbel
It is Y-direction in plane, the plane that two lateral anchor bars are constituted is parallel with web, and two lateral anchor bars are also cross steel
Bracket puts in two ends in precast concrete out-hung panel；
It further include two pieces of anchor end plates, the plate face of anchor end plate is parallel with Y-direction, it is separately fixed at two end points, anchor end plate,
Form I-shaped structure between end that steel corbel is put in precast concrete out-hung panel, lateral anchor bar, altogether there are two
I-shaped structure, Z-direction is embedded in two vertical anchor bars in each I-shaped structure；
The setting of anchor end plate, so that the end that steel corbel protrudes into precast concrete out-hung panel realizes the reinforcement of anchoring；
Embodiment 3:
Shown in Fig. 4-Fig. 5, pre-buried structure above-mentioned includes the anchor plate and embedded bar being embedded in concrete floor, even
It connects the bottom of steel plate and anchor plate surface and contacts fixation, the underrun embedded bar of anchor plate and the top flange of girder steel are solid
It is fixed, and embedded bar is vertical with the top flange of anchor plate, girder steel simultaneously；
Anchor plate is connect with embedded bar by plug welding；
Pass through fillet weld vertical welding baffle between the bottom plate and anchor plate of steel corbel.
Embodiment 4:
A kind of parallel-moving type precast concrete out-hung panel connect the construction method of load-bearing node with girder steel, comprising the following steps:
Anchor plate is welded in the top flange of girder steel by embedded bar, junction steel plate is by three face weld all around of fillet weld in anchoring
On steel plate；
Casting concrete floor reaches preset intensity；
The bottom end of bolt is welded in the through-hole of junction steel plate by plug welding；
Hoisting prefabricated concrete and hung wallboard is in place, the top of bolt is sequentially passed through to the big hole of steel corbel bottom center, together
When horizontal location and vertical positioning are carried out to precast concrete out-hung panel；
It is inserted into a certain number of filling pads between junction steel plate top and the bottom plate of steel corbel, gap is tamped；
Backing plate is inserted in from the top of bolt, tightening nut；
Baffle one end is welded on steel corbel bottom plate by fillet weld, the other end is welded on pre-embedded steel slab, prevents filling pad
It falls off.
The setting of the application structure, the gap between the bottom and floor of precast concrete out-hung panel can be logical in the later period
It crosses cement mortar to tamp, to realize waterproof, sound insulation and the Smoke prevention problem between family up and down.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the application fields.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
The meaning of "and/or" described herein refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of " connection " described herein can be between component be directly connected to be also possible to pass through between component
Other components are indirectly connected with.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (6)
1. a kind of parallel-moving type precast concrete out-hung panel connect the structure of load-bearing node with girder steel, including precast concrete is plug-in
Wallboard, it is characterised in that: pre-buried structure is installed in concrete floor, the bottom plate of steel corbel passes through fixed structure and pre-buried structure
Top connection, the bottom of pre-buried structure is fixedly connected with the top flange of girder steel；
The side wall of steel corbel is fixedly connected by connection structure with precast concrete out-hung panel；
Fixed structure above-mentioned includes junction steel plate, opens up big hole in the bottom plate center of steel corbel, bolt sequentially passes through
It offsets at the top of big hole, junction steel plate and pre-buried structure；
Connection structure above-mentioned includes four vertical anchor bars being laid in precast concrete out-hung panel and two transverse directions
Anchor bar, steel corbel are divided into two parts by web, and part of it is embedded in precast concrete out-hung panel, and steel corbel
Putting in the part in precast concrete out-hung panel, there are two ends, are X to where web with plane where the bottom plate of steel corbel
Plane is Y-direction, and the plane that two lateral anchor bars are constituted is parallel with web, and two lateral anchor bars are also cross steel ox
Leg puts in two ends in precast concrete out-hung panel；
It further include two pieces of anchor end plates, the plate face of anchor end plate is parallel with Y-direction, it is separately fixed at two end points, anchor end plate,
Form I-shaped structure between end that steel corbel is put in precast concrete out-hung panel, lateral anchor bar, altogether there are two
I-shaped structure, Z-direction is embedded in two vertical anchor bars in each I-shaped structure.
2. parallel-moving type precast concrete out-hung panel according to claim 1 connect the structure of load-bearing node with girder steel,
Be characterized in that: pre-buried structure above-mentioned includes the anchor plate and embedded bar being embedded in concrete floor, junction steel plate
Bottom fixation is contacted with anchor plate surface, the underrun embedded bar of anchor plate and the top flange of girder steel are fixed, and
Embedded bar is vertical with the top flange of anchor plate, girder steel simultaneously；
Anchor plate is connect with embedded bar by plug welding.
3. parallel-moving type precast concrete out-hung panel according to claim 1 connect the structure of load-bearing node with girder steel,
Be characterized in that: there are gaps between the bottom plate and junction steel plate of steel corbel, and filling pad is plugged in gap；
It is arranged backing plate on the big hole side bolt opposite with junction steel plate, while being arranged nut on bolt, nut and pad
Plate is in contact.
4. parallel-moving type precast concrete out-hung panel according to claim 1 connect the structure of load-bearing node with girder steel,
Be characterized in that: opening up through-hole in junction steel plate center, through-hole and big hole are coaxially disposed, bolt sequentially pass through big hole,
Through-hole.
5. parallel-moving type precast concrete out-hung panel according to claim 1 connect the structure of load-bearing node with girder steel,
It is characterized in that: by fillet weld vertical welding baffle between the bottom plate and anchor plate of steel corbel.
6. the construction method that a kind of parallel-moving type precast concrete out-hung panel connect load-bearing node with girder steel, it is characterised in that: packet
Include following steps:
Anchor plate is welded in the top flange of girder steel by embedded bar, junction steel plate is by three face weld all around of fillet weld in anchoring
On steel plate；
Casting concrete floor reaches preset intensity；
The bottom end of bolt is welded in the through-hole of junction steel plate by plug welding；
Hoisting prefabricated concrete and hung wallboard is in place, the top of bolt is sequentially passed through to the big hole of steel corbel bottom center, together
When horizontal location and vertical positioning are carried out to precast concrete out-hung panel；
It is inserted into a certain number of filling pads between junction steel plate top and the bottom plate of steel corbel, gap is tamped；
Backing plate is inserted in from the top of bolt, tightening nut；
Baffle one end is welded on steel corbel bottom plate by fillet weld, the other end is welded on pre-embedded steel slab, prevents filling pad
It falls off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910515673.3A CN110258817A (en) | 2019-06-14 | 2019-06-14 | A kind of parallel-moving type precast concrete out-hung panel connect the structure and construction method of load-bearing node with girder steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910515673.3A CN110258817A (en) | 2019-06-14 | 2019-06-14 | A kind of parallel-moving type precast concrete out-hung panel connect the structure and construction method of load-bearing node with girder steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110258817A true CN110258817A (en) | 2019-09-20 |
Family
ID=67918362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910515673.3A Pending CN110258817A (en) | 2019-06-14 | 2019-06-14 | A kind of parallel-moving type precast concrete out-hung panel connect the structure and construction method of load-bearing node with girder steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN110258817A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218530A (en) * | 1995-02-16 | 1996-08-27 | Sekisui House Ltd | Fixing device for curtain wall |
| JP2000179078A (en) * | 1998-12-11 | 2000-06-27 | Asahi Chem Ind Co Ltd | Panel fitting construction |
| CN104179278A (en) * | 2014-09-12 | 2014-12-03 | 上海市城市建设设计研究总院 | Hidden two-in-one dry type connection joint for prefabricated externally-hung wallboards |
| CN104652671A (en) * | 2015-02-09 | 2015-05-27 | 龙信建设集团有限公司 | Prefabricated assembly-type concrete outer-hanging wallboard fixing device and installation method |
| CN105064510A (en) * | 2015-07-29 | 2015-11-18 | 东南大学 | Prefabricated concrete external wall plate connecting device |
| CN206053030U (en) * | 2016-08-18 | 2017-03-29 | 浙江绿筑集成科技有限公司 | A kind of connecting node of upper load-bearing rotation formula precast concrete exterior wall and girder steel |
| CN210263417U (en) * | 2019-06-14 | 2020-04-07 | 南京长江都市建筑设计股份有限公司 | Structure of bearing node is connected with girder steel to translation formula precast concrete externally-hung wallboard |
-
2019
- 2019-06-14 CN CN201910515673.3A patent/CN110258817A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218530A (en) * | 1995-02-16 | 1996-08-27 | Sekisui House Ltd | Fixing device for curtain wall |
| JP2000179078A (en) * | 1998-12-11 | 2000-06-27 | Asahi Chem Ind Co Ltd | Panel fitting construction |
| CN104179278A (en) * | 2014-09-12 | 2014-12-03 | 上海市城市建设设计研究总院 | Hidden two-in-one dry type connection joint for prefabricated externally-hung wallboards |
| CN104652671A (en) * | 2015-02-09 | 2015-05-27 | 龙信建设集团有限公司 | Prefabricated assembly-type concrete outer-hanging wallboard fixing device and installation method |
| CN105064510A (en) * | 2015-07-29 | 2015-11-18 | 东南大学 | Prefabricated concrete external wall plate connecting device |
| CN206053030U (en) * | 2016-08-18 | 2017-03-29 | 浙江绿筑集成科技有限公司 | A kind of connecting node of upper load-bearing rotation formula precast concrete exterior wall and girder steel |
| CN210263417U (en) * | 2019-06-14 | 2020-04-07 | 南京长江都市建筑设计股份有限公司 | Structure of bearing node is connected with girder steel to translation formula precast concrete externally-hung wallboard |
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