CN108775086A - The additional assembled integral beam-column node structure and construction method for being closed connection reinforcing bar - Google Patents
The additional assembled integral beam-column node structure and construction method for being closed connection reinforcing bar Download PDFInfo
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- CN108775086A CN108775086A CN201810742480.7A CN201810742480A CN108775086A CN 108775086 A CN108775086 A CN 108775086A CN 201810742480 A CN201810742480 A CN 201810742480A CN 108775086 A CN108775086 A CN 108775086A
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- reinforcing bar
- prefabricated
- prefabricated post
- precast beam
- column
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 63
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 239000004567 concrete Substances 0.000 claims abstract description 33
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims abstract description 13
- 244000046052 Phaseolus vulgaris Species 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 7
- 239000002131 composite material Substances 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims 2
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 238000004873 anchoring Methods 0.000 abstract description 4
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 description 9
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000003466 welding Methods 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
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A kind of additional assembled integral beam-column node structure for being closed connection reinforcing bar of the present invention, including precast beam and prefabricated post, in precast beam end set keyway；More reinforcing bars are set in precast beam, and each reinforcing bar is pierced by prefabricated beam end, and is converted into the U-shaped ring in keyway；Prefabricated beam end is connect with prefabricated post, reinforcing bar is arranged in junction, and poured pea gravel concreten.The assembled integral bean column node of the present invention is functional, especially in the connecting portion of prefabricated components, improve the anchoring ability and connecting node stress performance of connection reinforcing bar, the intersection formed by beam-ends reinforcing bar and additional bar is closed constraint of the interaction of U-loop to concrete, improve the stress performance of assembled beam-column node connecting portion, it can be applied in middle high-intensity earthquake region, site operation is simple and practicable, reinforcing bar is connected in factory's inner bending processing site mounting arrangements, construction quality is simple and reliable, it is easily industrialized production, it is relatively low to construction personnel's Capability Requirement, reduce cost.
Description
Technical field
The present invention relates to brick or concrete duct field, specifically a kind of additional assembled integral bean column node for being closed connection reinforcing bar
Structure and construction method.
Background technology
Assembly concrete frame structure meets China's popularization building work as a kind of structure type having a large capacity and a wide range at present
The demand of industryization development, the large-scale popularization application in Practical Project can divide according to the requirement of assembled beam-column node mechanical property
For etc. cast-in-place bean column node and cast-in-place bean column node, the design and construction target of medium Cast-in-situ Beam Column border node such as non-be to reach cast-in-place
The performance of concrete structure is received simultaneously gradually to promote and apply by vast design and construction first-line staff and society, meanwhile, it is vast
Researcher proposes different prefabricated beam column connecting structure measures to improve the performance of assembled beam-column node.But mesh
There are node region reinforcement constitution complexity, the site operation arrangement connection larger matter of reinforcing bar difficulty for preceding assembled integral bean column node
Amount disadvantage not easy to control, the strong influence performance of assembled integral bean column node, especially in middle high intensity Zone
It in the application in domain, cannot such as meet the design concept of " strong node, weak component ", it will seriously affect assembled integral concrete frame
The overall performance and anti-seismic performance of frame structure, the serious popularization and application for hindering prefabricated concrete structure in China.On the one hand, existing
There is the bean column node region attachment connection reinforcing bar of assembled integral concrete frame structure to mostly use straight muscle or the U-shaped steel of bending
Muscle, attachment that site operation is placed connection reinforcing bar length is longer, and the difficulty for placing reinforcing bar is larger and deviation occurs in reinforcement location
When be affected to joint behavior, construction quality is not easy to control, and existing experimental study and case history are described, simultaneously meeting
Cause the volume of casting concrete when site operation to increase, increases the wet workload of site operation, delay the duration；On the other hand,
It is proposed in part is studied by the precast beam bottom reinforcement bars of column both sides or prestress wire by being embossed the machines such as anchor or sleeve
The mode of tool connection is attached, although the overall performance of bean column node can be improved, the operation of beam column node core area domain
Narrow space, construction is inconvenient, meanwhile, the skill of the quality of connection and construction personnel of live reinforcing bar or prestress wire mechanical connection
Art level and equipment have larger relationship, construction quality that should not ensure, are not easy in antidetonation region large-scale promotion application.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention to provide a kind of additional closure connection reinforcing bar
Assembled integral beam-column node structure and construction method.
Technical solution：In order to solve the above technical problems, a kind of additional assembled integral for being closed connection reinforcing bar of the present invention
Beam-column node structure, including precast beam and prefabricated post, in precast beam end set keyway；More reinforcing bars are set in precast beam, respectively
Reinforcing bar is pierced by prefabricated beam end, and is converted into the U-shaped ring in keyway；Prefabricated beam end is connect with prefabricated post, in junction
Reinforcing bar is set, and has poured pea gravel concreten.
Wherein, precast beam and the reinforcing bar of prefabricated post junction are to be closed reinforced steel bar ring.
Wherein, prefabricated post is skewered column, and with layer 2-3 prefabricated post for a prefabricated components, reinforcing bar, each layer are arranged in prefabricated post
Connecting node, connecting node exposed reinforcement, not casting concrete are reserved between prefabricated post.
Wherein, between the sidewall thickness of keyway is 2 times thickness of concrete cover and 50mm, the thickness of keyway bottom is not
Less than 50mm.
Wherein, 6mm is not less than when the roughness of the inner wall of keyway is measured using heap micromicrofarad, keyway length is not less than 1 times
Deck-molding.
Wherein, the reinforcing bar for the U-loop to form closure is stretched out in the end of precast beam, and U-loop is whole reinforcing bar bending closure, or
Binding or welded closed after the prefabricated beam-ends top and the bottom reinforcing bar bending of person；When using binding closure or welded closed, the reinforcing bar of bending
Length is no less than max (200,0.5h0,10d).
The present invention also provides a kind of construction methods of the additional assembled integral bean column node for being closed connection reinforcing bar, including with
Lower step：
Step 1：The prefabricated of precast beam and prefabricated post is carried out, prefabricated post is skewered column, and the connecting node of multilayer prefabricated post is set
It sets at the inflection point of column；
Step 2：The column bottom of prefabricated post after hoisting prefabricated, prefabricated post is connected using grout sleeve；
Step 3：After waiting for prefabricated post lifting construction, construction quality and the positioning of prefabricated post are checked；Then from top to bottom
Hoisting prefabricated beam；
Step 4：After the completion of waiting for precast beam lifting construction, setting closure reinforced steel bar ring, is closed reinforcing bar in the keyway of precast beam
Ring rides over the connecting node of prefabricated post；Stirrup is respectively set in U-shaped ring, prefabricated column connected node in precast beam keyway, goes forward side by side
Row stirrup encryption,
Step 5：After the completion of stirrup construction, the seam between prefabricated beam-ends and prefabricated post column side carries out processing after-pouring
Concrete, the concrete poured uses the pea gravel concreten of a high grade, and the concrete poured uses ungauged regions or microdilatancy
Concrete, casting concrete vibration compacting；When precast beam is composite beam, rear pouring concrete height and prefabricated depth of beam one
It causes；
Step 6：After the completion of waiting for precast beam construction, floor slab construction is carried out, floor uses prefabricated superimposed sheet or cast-in-situ floor.
Advantageous effect：The invention has the advantages that：
Assembled integral bean column node proposed by the present invention is functional, especially in the connecting portion of prefabricated components, carries
The high anchoring ability and connecting node stress performance of connection reinforcing bar, passes through the intersection that beam-ends reinforcing bar and additional bar are formed and is closed
Constraint of the interaction of U-loop to concrete improves the stress performance of assembled beam-column node connecting portion, can be in middle Gao Lie
Seismic region application is spent, meanwhile, site operation is simple and practicable, and connection reinforcing bar is applied in factory's inner bending processing site mounting arrangements
Working medium amount is simple and reliable, it is easy to accomplish industrialized production, it is relatively low to construction personnel's Capability Requirement, and reduce cost.
Description of the drawings
Fig. 1 is precast beam and prefabricated post connection structure decomposition diagram；
Fig. 2 is precast beam and prefabricated post in prefabricated column connected node connection diagram；
Fig. 3 is precast beam lifting construction schematic diagram；
Fig. 4 is that precast beam lifts schematic diagram in place；
Fig. 5 is the attachment structure schematic diagram of precast beam and prefabricated post；
Fig. 6 is that beam-column connection constructs schematic elevation view；
Fig. 7 is that beam-column connection constructs schematic side view；
Fig. 8 is that beam-column connection constructs schematic top plan view.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
As Figure 1-Figure 8, a kind of additional assembled integral beam-column node structure for being closed connection reinforcing bar of the invention, packet
Precast beam 2 and prefabricated post 1 are included, precast beam 2 can be composite beam, and there is upper part precast beam to overlap position 6, in 2 end of precast beam
Keyway 3 is set；More reinforcing bars are set in precast beam 2, and each reinforcing bar is pierced by 2 end of precast beam, and the U being converted into keyway 3
Type ring 4；2 end of precast beam is connect with prefabricated post 1, reinforcing bar is arranged in junction, and poured pea gravel concreten.Precast beam 2 with
The reinforcing bar of 1 junction of prefabricated post is to be closed reinforced steel bar ring 7, and prefabricated post 1 is multilayer skewered column, is one prefabricated with layer 2-3 prefabricated post 1
Component, prefabricated post 1 is interior to be arranged reinforcing bar, and non-casting concrete region 9 is reserved between each layer prefabricated post 1 and is used as connecting node, connection
Node exposed reinforcement.When 1 interface of prefabricated post is larger or floor height is higher, make in the X muscle that the connecting node setting of prefabricated post 1 intersects
Prefabricated components meet the requirement of construction loads and deformation, and column tie-bar 8 can be arranged in 1 connecting node of prefabricated post of non-casting concrete,
Or construction is facilitated not to be pre-placed stirrup, place stirrup when site operation；But when structure level number is less or there have to be special
When demand, prefabricated post 1 or 1 component of single layer prefabricated post.1 lower post of prefabricated post, which indulges muscle 8, should connect pre-buried grout sleeve
As the connecting structure measure of prefabricated post 1, the position of blocking of prefabricated components preferably can set connecting portion according to design requirement facility
It sets at the smaller inflection point of prefabricated post moment of flexure.After precast beam 2 lifts in place according to lifting direction 10 and prefabricated post 1, pre-
Keyway 3 and precast beam 2,1 join domain of prefabricated post of beam 2 processed, which are placed, is closed reinforced steel bar ring 7 as connection reinforcing bar, then in interconnecting piece
Position pours pea gravel concreten and completes site operation.The sidewall thickness of keyway 3 be 2 times thickness of concrete cover and 50mm it
Between, the thickness of 3 bottom of keyway is not less than 50mm.It is not less than 6mm, key when the roughness of the inner wall of keyway 3 is measured using heap micromicrofarad
3 length of slot is not less than 1 times of deck-molding.The reinforcing bar for the U-loop to form closure is stretched out in the end of precast beam 2, and U-loop is whole reinforcing bar
Binding or welded closed after the 2 end top and the bottom reinforcing bar bending of bending closure or precast beam；Using binding closure or welded closed
When, the reinforcing bar length of bending is no less than max (200,0.5h0,10d), while the bending overlap joint of reinforcing bar should meet it is existing
The requirement of the technical specifications such as GB50010-2010.
The length for the U-loop that closure reinforced steel bar ring 7 and 2 end of precast beam are stretched out should meet the requirement of anchoring, the staggeredly cloth of the two
It sets and two different forms can be used：Uniform intervals are arranged or staggeredly bar splicing is arranged, using staggeredly reinforcing bar uniform intervals cloth
When setting, the length in the lap of splice and cast-in-place node region is no less than one times of deck-molding, and steel is overlapped when using staggeredly bar splicing
The length of muscle can suitably reduce, but must meet existing technical specification or can be appropriate when experimental verification meets anchoring property requirement
Reduce its length.When according to actual design requirement, 2 top and the bottom of precast beam, which need to configure more beam, indulges muscle, i.e., on precast beam 2
When lower rebar is the double-deck arrangement of reinforcement, rebuilding can be used in the vertical muscle of beam closure that 2 end of precast beam is stretched out, and still, is closed U-loop and stretches
The length gone out is closed by inner ring, that is, smaller U-shaped and is indulged muscle length computation.When the beam column node core area domain of prefabricated post 1 not
When stirrup is set, factory process can be used and complete to be closed reinforced steel bar ring 7 as connection reinforcing bar, when 1 component bean column node core of prefabricated post
Stirrup has been arranged in heart district domain, when site operation placement closure 7 difficulty of reinforced steel bar ring is larger, can place U-shaped respectively at upper and lower position and connect
It connects reinforcing bar and closure reinforced steel bar ring 7 is formed by the form for binding or welding at the construction field (site), meanwhile, 2 end seat shoulder bar of precast beam can
Using the form of straight muscle, it is arranged in the top of precast beam 2, then completes to construct with floor slab construction casting concrete.
The present invention also provides a kind of construction methods of the additional assembled integral bean column node for being closed connection reinforcing bar, including with
Lower step：
Step 1：The prefabricated of precast beam 2 and prefabricated post 1 is carried out, prefabricated post 1 is skewered column, the connection section of multilayer prefabricated post 1
Point is arranged at the inflection point of column；
Step 2：The column bottom of prefabricated post 1 after hoisting prefabricated, prefabricated post 1 is connected using grout sleeve；Multilayer prefabricated post 1
Connecting node may be provided at the inflection point of prefabricated post 1, to reduce the stress of 1 connecting portion of prefabricated post, when prefabricated post 1 has been constructed
Reliable temporary support should be set after, and the requirement of construction loads when meeting hoisting prefabricated beam 2 and floor slab construction ensures construction
When prefabricated post 1 do not damage, 1 lifting component of prefabricated post construct when, should reasonably arrange lifting construction；
Step 3：After waiting for 1 lifting construction of prefabricated post, construction quality and the positioning of prefabricated post 1 are checked；Then from upper and
Under hoisting prefabricated beam 2；After lifting is just, check whether the positioning of 2 all directions of precast beam is accurate, including 2 bottom surface of precast beam, side
And whether the position of 2 end of precast beam is accurate.
Step 4：After the completion of waiting for 2 lifting construction of precast beam, setting closure reinforced steel bar ring 7, is closed in the keyway 3 of precast beam 2
Reinforced steel bar ring 7 rides over the connecting node of prefabricated post 1；U-shaped ring 4,1 connecting node of prefabricated post in 2 keyway 3 of precast beam are respectively set
Stirrup, and stirrup encryption is carried out,
Step 5：After the completion of stirrup construction, the seam between 1 column side of 2 end of precast beam and prefabricated post is poured after handling
Concrete is built, the concrete poured uses the pea gravel concreten of a high grade, and the concrete poured uses ungauged regions or micro- swollen
Swollen concrete, casting concrete vibration compacting；When precast beam 2 is composite beam, rear pouring concrete height and 2 height of precast beam
Unanimously；
Step 6：After the completion of waiting for that precast beam 2 is constructed, floor slab construction is carried out, floor uses prefabricated superimposed sheet or cast-in-situ floor.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of additional assembled integral beam-column node structure for being closed connection reinforcing bar, it is characterised in that：Including precast beam and in advance
Column processed, in precast beam end set keyway；More reinforcing bars are set in precast beam, and each reinforcing bar is pierced by prefabricated beam end, and is converted into
U-shaped ring in keyway；Prefabricated beam end is connect with prefabricated post, reinforcing bar is arranged in junction, and poured pea gravel concreten.
2. the additional assembled integral beam-column node structure for being closed connection reinforcing bar according to claim 1, it is characterised in that：
Precast beam and the reinforcing bar of prefabricated post junction are to be closed reinforced steel bar ring.
3. the additional assembled integral beam-column node structure for being closed connection reinforcing bar according to claim 1, it is characterised in that：
Prefabricated post is skewered column, with layer 2-3 prefabricated post for a prefabricated components, is arranged reinforcing bar in prefabricated post, pre- between each layer prefabricated post
Stay connecting node, connecting node exposed reinforcement, not casting concrete.
4. the additional assembled integral beam-column node structure for being closed connection reinforcing bar according to claim 1, it is characterised in that：
Between thickness of concrete cover and 50mm that the sidewall thickness of keyway is 2 times, the thickness of keyway bottom is not less than 50mm.
5. the additional assembled integral beam-column node structure for being closed connection reinforcing bar according to claim 4, it is characterised in that：
It is not less than 6mm when the roughness of the inner wall of keyway is measured using heap micromicrofarad, keyway length is not less than 1 times of deck-molding.
6. the additional assembled integral beam-column node structure for being closed connection reinforcing bar according to claim 1, it is characterised in that：
The reinforcing bar for the U-loop to form closure is stretched out in the end of precast beam, and U-loop is on whole reinforcing bar bending closure or prefabricated beam-ends
Binding or welded closed after lower rebar bending；When using binding closure or welded closed, the reinforcing bar length of bending is no less than
Max (200,0.5h0,10d).
7. a kind of construction method of the additional assembled integral bean column node for being closed connection reinforcing bar, which is characterized in that including following
Step：
Step 1：The prefabricated of precast beam and prefabricated post is carried out, prefabricated post is skewered column, and the connecting node setting of multilayer prefabricated post exists
At the inflection point of column；
Step 2：The column bottom of prefabricated post after hoisting prefabricated, prefabricated post is connected using grout sleeve；
Step 3：After waiting for prefabricated post lifting construction, construction quality and the positioning of prefabricated post are checked；Then it lifts from top to bottom
Precast beam；
Step 4：After the completion of waiting for precast beam lifting construction, the setting closure reinforced steel bar ring in the keyway of precast beam is closed reinforced steel bar ring and takes
In the connecting node of prefabricated post；Stirrup is respectively set in the reinforcing bar of U-shaped ring, prefabricated column connected node in precast beam keyway, and
Stirrup encryption is carried out,
Step 5：After the completion of stirrup construction, the seam between prefabricated beam-ends and prefabricated post column side carries out processing after-pouring coagulation
Soil, the concrete poured uses the pea gravel concreten of a high grade, and the concrete poured is using the mixed of ungauged regions or microdilatancy
Solidifying soil, casting concrete vibration compacting；When precast beam is composite beam, rear pouring concrete height and precast beam are highly consistent；
Step 6：After the completion of waiting for precast beam construction, floor slab construction is carried out, floor uses prefabricated superimposed sheet or cast-in-situ floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810742480.7A CN108775086A (en) | 2018-07-09 | 2018-07-09 | The additional assembled integral beam-column node structure and construction method for being closed connection reinforcing bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810742480.7A CN108775086A (en) | 2018-07-09 | 2018-07-09 | The additional assembled integral beam-column node structure and construction method for being closed connection reinforcing bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108775086A true CN108775086A (en) | 2018-11-09 |
Family
ID=64029778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810742480.7A Pending CN108775086A (en) | 2018-07-09 | 2018-07-09 | The additional assembled integral beam-column node structure and construction method for being closed connection reinforcing bar |
Country Status (1)
| Country | Link |
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| CN (1) | CN108775086A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016963A (en) * | 2019-04-01 | 2019-07-16 | 广州大学 | A kind of assembled connecting node and its construction method |
| CN110145070A (en) * | 2019-05-13 | 2019-08-20 | 悉地国际设计顾问（深圳）有限公司 | A kind of prefabricated column assembly and its construction method |
| CN111502118A (en) * | 2020-04-14 | 2020-08-07 | 中铁第四勘察设计院集团有限公司 | Assembled combination beam and beam slab node |
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| CN208763207U (en) * | 2018-07-09 | 2019-04-19 | 东南大学 | The assembled integral beam-column node structure of additional closure connection reinforcing bar |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110016963A (en) * | 2019-04-01 | 2019-07-16 | 广州大学 | A kind of assembled connecting node and its construction method |
| CN110145070A (en) * | 2019-05-13 | 2019-08-20 | 悉地国际设计顾问（深圳）有限公司 | A kind of prefabricated column assembly and its construction method |
| CN111502118A (en) * | 2020-04-14 | 2020-08-07 | 中铁第四勘察设计院集团有限公司 | Assembled combination beam and beam slab node |
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Application publication date: 20181109 |