CN106193288B - A kind of precast concrete node pouring ECC layers - Google Patents
A kind of precast concrete node pouring ECC layers Download PDFInfo
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- CN106193288B CN106193288B CN201610549820.5A CN201610549820A CN106193288B CN 106193288 B CN106193288 B CN 106193288B CN 201610549820 A CN201610549820 A CN 201610549820A CN 106193288 B CN106193288 B CN 106193288B
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- steel plate
- node
- pouring
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- precast
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 87
- 239000010959 steel Substances 0.000 claims abstract description 87
- 238000005266 casting Methods 0.000 claims abstract description 19
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 239000004567 concrete Substances 0.000 claims description 33
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000003908 quality control method Methods 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011182 bendable concrete Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of precast concrete nodes for pouring ECC layers, including square steel tube, precast beam, prefabricated post；Precast beam and prefabricated post are the outer ring that framework of steel reinforcement is arranged in that several stirrups are coaxial and are parallel to each other, square steel tube is coaxially longitudinally built in prefabricated post, the first steel plate is respectively equipped on the two sides longitudinal terminal surface of square steel tube, the transverse end connection of first steel plate is built in the second steel plate of precast beam, same longitudinal surface is in after first steel plate and the connection of the second steel plate, the region formed between square steel tube lateral surface and prefabricated post, between the second steel plate, between the first steel plate constitutes main casting area, pours ECC layers of engineered cementitious based composites in main casting area.A kind of precast concrete node pouring ECC layers of the invention has many advantages, such as that speed of application is fast, node is easy to connect, intensity is high, quality control is more secure, and has more safety, applicability, durability and economy.
Description
Technical field
The present invention relates to a kind of concrete joints, and in particular to a kind of precast concrete node for pouring ECC layers.
Background technique
Currently, concrete-filled rectangular steel tube composite structure has been widely used in architectural engineering, concrete-filled rectangular steel tube combination knot
Structure technology has obtained tremendous development in recent years, and concrete-filled rectangular steel tube composite structure is because of the advantages that its bearing capacity is high, and ductility is good
Widely applied in engineering, with the emergence of Super High and long span building structure, concrete-filled rectangular steel tube tie point at
For one of the important content in Architectural Structure Design, connecting node directly affect the overall performance under the conditions of structural bearing with
And the load-bearing property of coupled structure, therefore the performance of connecting joint structure is to cannot be neglected.
At present in China, for engineered cementitious based composites ECC (Engineered Cementitious
Composites research) and application are also less, Practical Project at most remain normal concrete.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide one kind to have greater security, applicability, resistance to
The precast concrete node of long property and economy.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of precast concrete node pouring ECC layers, including square steel tube, precast beam, prefabricated post；The precast beam and pre-
Column processed is the outer ring that framework of steel reinforcement is arranged in that several stirrups are coaxial and are parallel to each other, and the square steel tube is coaxially longitudinally built in pre-
Column processed, is respectively equipped with the first steel plate on the two sides longitudinal terminal surface of the square steel tube, built in the transverse end connection of first steel plate
In the second steel plate of precast beam, same longitudinal surface, the square steel tube outside are in after first steel plate and the connection of the second steel plate
The region formed between face and prefabricated post, between the second steel plate, between the first steel plate constitutes main casting area, the main pouring area
ECC layers of engineered cementitious based composites are poured in domain.Square steel tube is arranged in prefabricated Column border node, connects the first steel plate and the second steel
Plate enhances the overall performance and intensity of node.
First steel plate and the second steel plate are connected for prefabricated Column border node with prefabricated girder connection, bear drawing/compression.
The outer ring of above-mentioned square steel tube is equipped with transverse steel skeleton.
Framework of steel reinforcement constitutes structural solid, reinforces the integral strength of precast beam and prefabricated post；Stirrup increases the anti-of oblique section
Shear stress, and connect and be coupled stress main reinforcement collective effect.
Above-mentioned second steel plate is fixedly connected with two inside longitudinal surfaces of precast beam.
Casting concrete layer in above-mentioned square steel tube.
After-pouring concrete layer or ECC layers of engineered cementitious based composites in above-mentioned precast beam.
After-pouring concrete layer or ECC layers of engineered cementitious based composites in above-mentioned prefabricated post.
Above-mentioned first steel plate and the second steel plate are bolted.
So that the first steel plate is combined closely with the second steel plate by bolt, is transmitted to the power on the second steel plate by rubbing surface
Power on precast beam is transmitted in prefabricated post by the first steel plate.It is bolted the bonding strength strengthened between steel plate, and pre-
After beam processed is damaged, maintenance or replacement precast beam is facilitated to safeguard whole safety without regard to prefabricated post.
The invention has the beneficial effects that: a kind of beam column of precast concrete node pouring ECC layers of the invention uses
Built-in steel construction connects built-in steel plate, opposite conventional coupling arrangement, node connection fast with speed of application using high-strength bolt
Convenient, intensity height, quality control the advantages that more secure, and have more safety, applicability, durability and economy.
By the improvement of structure, under cyclic load, from the core of node at the final destruction of precast concrete node
Heart district domain turns to precast beam light plate end and is bolted position, destroys position and obtains outer shifting, meets " strong column and weak beam "
Principle.
Precast concrete node maintains preferable ductility while improving bearing capacity, and in the main pouring area of node
Domain is poured using engineered cementitious based composites ECC, while pre-buried square steel tube, is reinforced node region, is mentioned
The high energy consumption of node, meets the design principle of " Qiang Jiedian, weak component ".
The use of engineered cementitious based composites ECC improves the anti-seismic performance and injury resistant ability of node, and then reduces
Be used to repair the expense of node, and the configuration of ECC after shake, using industrial waste flyash replace about 50% cement who
Material realizes that recycling utilizes, and cost is lower.
In addition, the good density of ECC, effectively prevents harmful substance to the infiltration inside construction material, improves component
Durability, extend the service life of structure.
Detailed description of the invention
Fig. 1 is a kind of side view of the structural schematic diagram of precast concrete node for pouring ECC layers of the invention.
Fig. 2 is a kind of top view of the structural schematic diagram of precast concrete node for pouring ECC layers of the invention.
Fig. 3 is a kind of perspective view of the structural schematic diagram of precast concrete node for pouring ECC layers of the invention.
Fig. 4 is a kind of outside drawing of the structural schematic diagram of precast concrete node for pouring ECC layers of the invention.
Fig. 5 is the hysteresis loop that finite element software ABAQUS simulates cast-in-place concrete node.
Fig. 6 is the hysteresis loop that finite element software ABAQUS simulates precast concrete node.
Fig. 7 is to pour ECC layers in the finite element software ABAQUS simulation main casting area of precast concrete node and pour mixed
The load-displacement skeleton curve of solidifying C60 layers of soil.
Attached meaning marked in the figure is as follows: 1, square steel tube, 2, prefabricated post, 3, precast beam, the 4, first steel plate, the 5, second steel
Plate, 6, stirrup, 7, framework of steel reinforcement.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
A kind of precast concrete node, including square steel tube 1, precast beam 3, prefabricated post 2；Precast beam 3 and prefabricated post 2 are several
Stirrup 6 is coaxial and the outer ring that framework of steel reinforcement 7 is arranged in that is parallel to each other, and square steel tube 1 is coaxial longitudinal to be built in prefabricated post 2, square steel
Be respectively equipped with the first steel plate 4 on the two sides longitudinal terminal surface of pipe 1, the transverse end of the first steel plate 4 be bolted be built in it is prefabricated
It is in same longitudinal surface after second steel plate 5 of beam 3, the first steel plate 4 and the connection of the second steel plate 5,1 lateral surface of square steel tube and pre-
The region formed between column 2 processed, between the second steel plate 5, between the first steel plate 4 constitutes main casting area, the main casting area
Inside pour ECC layers of engineered cementitious based composites.
The outer ring of square steel tube 1 is equipped with transverse steel skeleton 7.
Second steel plate 5 is fixedly connected with two inside longitudinal surfaces of precast beam 3.
Casting concrete layer in square steel tube 1.
After-pouring concrete layer or ECC layers of engineered cementitious based composites in precast beam 3 and prefabricated post 2.
Cast-in-place concrete node is joint core region at final destruction under cyclic load, and precast concrete
The destruction of node then concentrates on 3 light plate end of precast beam and is bolted position, compared with cast-in-place concrete node, destroys
Position obtains outer shifting, meets the principle of " strong column and weak beam ".
Fig. 5 and Fig. 6 is to be respectively by finite element software ABAQUS simulation cast-in-place concrete node, precast concrete node
Hysteresis loop, from Fig. 5 and Fig. 6 as it can be seen that compared with cast-in-place concrete node, the bearing power increase of prefabricated node 28.22%,
Equivalent damping coefficient improves 58.86%, and the two displacement ductility average value is all larger than 3, meets armored concrete knot
Structure displacement ductility is greater than 2.57 requirement.
Illustrate that precast concrete node maintains preferable ductility while improving bearing capacity, and is poured after node
Area is poured using engineered cementitious based composites ECC, while pre-buried square steel tube 1, is reinforced node region, is mentioned
The high energy consumption of node, meets the design principle of " Qiang Jiedian, weak component ".
C60 layers of casting concrete in the main casting area of precast concrete node is simulated by finite element software ABAQUS, is poured
ECC layers of tension damage factor is built, the precast concrete node of ECC layers He casting concrete C60 layers is poured in main casting area
Failure mode is close, and damage, which is concentrated mainly on, to be bolted position, pours face and beam light plate end, is when pouring material
When concrete C60, Joint Damage degree is obviously more serious than pouring the Joint Damage of engineered cementitious based composites ECC.
Fig. 7 is to pour ECC layers in the finite element software ABAQUS simulation main casting area of precast concrete node and pour mixed
The load-displacement skeleton curve of solidifying C60 layers of soil.
Table 1 is the node diagnostic amount comparison that ECC layers and concrete C60 layers of material are poured in main casting area:
Characteristic values of specimen with different late-pouring
material
Table 1
From fig.7, it can be seen that the initial stiffness of the node skeleton curve of casting concrete C60 is more slightly larger than the node for pouring ECC,
This is because in the matrix of engineered cementitious based composites ECC and not including coarse aggregate, while in order to guarantee to give full play to
Tensile strain-hardening effect of material, the partial size of sand and content are also restricted in matrix, this is dropped to a certain extent
The low rigidity of ECC increases the porosity of matrix further, since being mixed with PVA fiber, and homogeneity reduces, this is also resulted in
The elasticity modulus of ECC is lower than normal concrete, thus the initial stiffness of ECC node skeleton curve is than concrete C60 node
It is low.
In addition, the skeleton curve of comparison ECC node and concrete C60 node is it is recognized that while two kinds of nodes are afforded
Peak load is not much different, but deformability has apparent difference, and table 1 lists two kinds and pours the main of material lower node
Characteristic quantity, it can be seen that the yield displacement and extreme displacement of ECC node are bigger than concrete C60 node, average displacement
Ductility factor improves 8.16%, and after reaching peak load compared with concrete C60 node, ECC node skeleton curve
Decline is slower, this is because, as crack constantly extends, the PVA fiber in ECC plays after node curve enters descending branch
Blocking effect start obviously, cause load curve decline slowly, peak strain is significantly greater than normal concrete, wherein high-strength
Up to 3% or so, this shows that PVA fiber can significantly improve the plastic deformation ability of ECC matrix for the ECC limit stretching strain of degree,
And due to the increase of plastic deformation ability, the energy-dissipating property of node also increases accordingly, as shown in Table 1, same to concrete
C60 node is compared, and the Equivalent damping coefficient of ECC node improves 21.26%.
Therefore, when the main casting area of precast concrete node uses engineered cementitious based composites ECC, node resists
Shock stability and injury resistant ability increase, and then are used to repair the expense of node after reducing shake, and when configuring ECC,
Using industrial waste flyash replace about 50% cement somehow, realize recycling utilize, in addition, the density of ECC
Very well, in normal conditions of use, component surface can not crack for a long time, effectively prevent harmful substance to inside construction material
Infiltration, improve the durability of component, then extend the service life of structure.
Comprehensive society, economy, environment three elements account for, and using ECC material ratio, using normal concrete, there are about 37%
Cost advantage safety is met as the material that pours of main casting area using ECC thus for the joint form in the present invention
Property, applicability, durability and economy the requirement of structure design function.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (6)
1. a kind of precast concrete node for pouring ECC layers, which is characterized in that including square steel tube, precast beam, prefabricated post；
The precast beam and prefabricated post are the outer ring that framework of steel reinforcement is arranged in that several stirrups are coaxial and are parallel to each other,
The square steel tube is coaxially longitudinally built in prefabricated post,
It is respectively equipped with the first steel plate on the two sides longitudinal terminal surface of the square steel tube,
The transverse end connection of first steel plate is built in the second steel plate of precast beam,
It is in same longitudinal surface after first steel plate and the connection of the second steel plate,
The region formed between the square steel tube lateral surface and prefabricated post, between the second steel plate, between the first steel plate constitutes master and pours
Region is built,
ECC layers of engineered cementitious based composites are poured in the main casting area；
After-pouring concrete layer or ECC layers of engineered cementitious based composites in the precast beam.
2. a kind of precast concrete node for pouring ECC layers according to claim 1, which is characterized in that the square steel tube
Outer ring be equipped with transverse steel skeleton.
3. a kind of precast concrete node for pouring ECC layers according to claim 1, which is characterized in that second steel
Plate is fixedly connected with two inside longitudinal surfaces of precast beam.
4. a kind of precast concrete node for pouring ECC layers according to claim 1, which is characterized in that the square steel tube
Interior casting concrete layer.
5. a kind of precast concrete node for pouring ECC layers according to claim 1, which is characterized in that the prefabricated post
Interior after-pouring concrete layer or ECC layers of engineered cementitious based composites.
6. a kind of precast concrete node for pouring ECC layers according to claim 1, which is characterized in that first steel
Plate and the second steel plate are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549820.5A CN106193288B (en) | 2016-07-13 | 2016-07-13 | A kind of precast concrete node pouring ECC layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610549820.5A CN106193288B (en) | 2016-07-13 | 2016-07-13 | A kind of precast concrete node pouring ECC layers |
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| Publication Number | Publication Date |
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| CN106193288A CN106193288A (en) | 2016-12-07 |
| CN106193288B true CN106193288B (en) | 2019-08-16 |
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| CN201610549820.5A Expired - Fee Related CN106193288B (en) | 2016-07-13 | 2016-07-13 | A kind of precast concrete node pouring ECC layers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605103A (en) * | 2017-10-08 | 2018-01-19 | 华东交通大学 | A kind of FRP tendons reinforcing bar composite strengthening ECC/ concrete combination columns |
| CN109853727B (en) * | 2018-12-29 | 2024-07-09 | 华南理工大学 | Recoverable functional reinforced concrete frame anti-seismic energy consumption node |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2758208B2 (en) * | 1989-05-31 | 1998-05-28 | 大成建設株式会社 | Joint method between column and steel reinforced concrete beam |
| CN201605670U (en) * | 2010-03-12 | 2010-10-13 | 张剑 | Rigid connection node of concrete-filled tubular column and reinforced concrete beam |
| CN103774754A (en) * | 2014-01-07 | 2014-05-07 | 同济大学 | Prefabricated ECC-RC combination beam column joint component |
| CN103953124A (en) * | 2014-05-15 | 2014-07-30 | 苏州工业园区设计研究院股份有限公司 | Section-steel concrete beam and ordinary concrete column nodal region structure |
| KR101451167B1 (en) * | 2013-07-26 | 2014-10-15 | 한국교통대학교산학협력단 | Hollowed Precast reinforced concrete Assembly And Connecting Method Thereof |
| CN104499568A (en) * | 2014-12-19 | 2015-04-08 | 东南大学 | Square steel pipe fabricated column-prefabricated superposed beam integrally-fabricated frame and construction method |
-
2016
- 2016-07-13 CN CN201610549820.5A patent/CN106193288B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2758208B2 (en) * | 1989-05-31 | 1998-05-28 | 大成建設株式会社 | Joint method between column and steel reinforced concrete beam |
| CN201605670U (en) * | 2010-03-12 | 2010-10-13 | 张剑 | Rigid connection node of concrete-filled tubular column and reinforced concrete beam |
| KR101451167B1 (en) * | 2013-07-26 | 2014-10-15 | 한국교통대학교산학협력단 | Hollowed Precast reinforced concrete Assembly And Connecting Method Thereof |
| CN103774754A (en) * | 2014-01-07 | 2014-05-07 | 同济大学 | Prefabricated ECC-RC combination beam column joint component |
| CN103953124A (en) * | 2014-05-15 | 2014-07-30 | 苏州工业园区设计研究院股份有限公司 | Section-steel concrete beam and ordinary concrete column nodal region structure |
| CN104499568A (en) * | 2014-12-19 | 2015-04-08 | 东南大学 | Square steel pipe fabricated column-prefabricated superposed beam integrally-fabricated frame and construction method |
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| CN106193288A (en) | 2016-12-07 |
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