CN109853727A - Recoverable function steel bar concrete frame energy dissipation node - Google Patents
Recoverable function steel bar concrete frame energy dissipation node Download PDFInfo
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- CN109853727A CN109853727A CN201811630644.3A CN201811630644A CN109853727A CN 109853727 A CN109853727 A CN 109853727A CN 201811630644 A CN201811630644 A CN 201811630644A CN 109853727 A CN109853727 A CN 109853727A
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- seismic energy
- energy dissipation
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- 230000021715 photosynthesis, light harvesting Effects 0.000 title claims abstract 25
- 229910000831 Steel Inorganic materials 0.000 title claims abstract 13
- 239000010959 steel Substances 0.000 title claims abstract 13
- 239000004567 concrete Substances 0.000 title claims abstract 4
- 239000011150 reinforced concrete Substances 0.000 claims abstract 12
- 230000002787 reinforcement Effects 0.000 claims abstract 6
- 239000004568 cement Substances 0.000 claims abstract 4
- 238000004873 anchoring Methods 0.000 claims abstract 3
- 239000002131 composite material Substances 0.000 claims abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 3
- 239000000835 fiber Substances 0.000 claims 3
- 239000000843 powder Substances 0.000 claims 3
- -1 polypropylene Polymers 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 claims 1
- 239000004372 Polyvinyl alcohol Substances 0.000 claims 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000010881 fly ash Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 229910052500 inorganic mineral Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000011707 mineral Substances 0.000 claims 1
- 229920001155 polypropylene Polymers 0.000 claims 1
- 229920002451 polyvinyl alcohol Polymers 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 229910021487 silica fume Inorganic materials 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
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Abstract
本发明公开了一种可恢复功能型钢筋混凝土框架抗震耗能节点，包括正交的柱构件和梁构件，所述柱构件与所述梁构件相交的区域设置有抗震耗能节点的柱构件，抗震耗能节点的柱构件通过抗震耗能节点的梁构件与梁构件相连接，抗震耗能节点的梁构件、抗震耗能节点的柱构件均由水泥基复合材料和钢筋骨架浇捣而成，所述柱构件和梁构件由混凝土和钢筋骨架浇捣制成。本发明可防止地震作用下梁纵筋与混凝土的粘结力退化所导致的锚固失效而发生贯通滑动，防止发生柱或节点破坏而不能形成永久性梁铰机构，实现钢筋混凝土结构在地震作用下可耗能、在地震后可恢复的功能，大幅减少地震的人员伤亡和救灾费用，具有良好的经济效益、社会效益和环境效益。
The invention discloses a recoverable functional reinforced concrete frame anti-seismic energy-dissipating node, comprising orthogonal column members and beam members, and a column member of the anti-seismic energy-dissipating node is arranged in the area where the column member and the beam member intersect, The column members of the seismic energy dissipation node are connected to the beam members through the beam members of the seismic energy dissipation node. The beam members of the seismic energy dissipation node and the column members of the seismic energy dissipation node are made of cement-based composite materials and steel skeletons. The column members and beam members are cast and rammed from concrete and steel skeletons. The invention can prevent the anchoring failure caused by the degradation of the bonding force between the beam longitudinal reinforcement and the concrete under the action of earthquake, and prevent the occurrence of through sliding, prevent the damage of the column or the node and cannot form a permanent beam hinge mechanism, and realize the reinforced concrete structure under the action of earthquake. The functions that can consume energy and can be restored after the earthquake greatly reduce the casualties and disaster relief costs of the earthquake, and have good economic, social and environmental benefits.
Description
Technical field
The present invention relates to one kind of the structure node more particularly to building structure field of antidetonation and recoverable function application can
Restore functional form reinforced concrete frame energy dissipation node.
Background technique
The bean column node of reinforced concrete frame structure is in transmission internal force and keeps playing on structural integrity most important
Effect.Under geological process, reinforced concrete beam column node area subjects great internal force, it is caused to become in frame most
Weak, most easily damaged one of position, with the repeated action of earthquake, beam indulges muscle and the cohesive force of concrete is gradually degenerated, and
Extend to node area or even perforation sliding occurs for fastening invalidation, it is final that column or destruction of a node occurs and beam hinge sidesway cannot be formed
Mechanism.Again due to the disadvantages of concrete material tensile strength itself is low, poor toughness, node easily occurs interface split pull open evil idea or
Failure by shear, protective layer peel off, and then structure is caused to occur compared with havoc.General frame, shear wall structure are " strong in order to realize
The Seismic Design Requirements of the weak beam of column ", " strong shear capacity and weak bending capacity " and " the strong weak component of node ", in concrete beam and column node and adjacent
Node is all configured with intensive stirrup at beam-ends, styletable, so that the destruction of node beam column is prevented, but this makes concrete frame knot
Structure beam-ends or styletable reinforcing bar, which first reach surrender, to be destroyed, and cause after earthquake structure there is permanent plastic relatively and generation compared with
Big residual deformation, structure will be destroyed after earthquake, and correlation function can not restore to use.
Compared with prior art, node beam makes reinforced concrete using that can restore dissipative member design in the case of seismic events
The beam-ends of native frame joint forms toughness area, and node beam is made to have better Crack Control, energy absorption, resist brittle fracture
Ability, the cohesive force that can prevent beam from indulging muscle and concrete are gradually degenerated, fastening invalidation and perforation sliding occurs, column or section occurs
Point is destroyed without that can form beam hinge lateral movement mechanism；Meanwhile the appearance position of also effective control beam-ends deformation.In addition, ECC material
High tenacity, can reduce shake after structure residual deformation, to realize that function of the reinforced concrete structure after geological process can
Restore, the casualties and disaster relief expense of earthquake, with good economic efficiency, social benefit and environmental benefit is greatly decreased.
This is function restorability of the bean column node of realization reinforced concrete frame structure after geological process, and enhancing frame structure is whole
The energy dissipation capacity of body realizes that classification damping energy consumption provides newly convenient for repairing after shake for key positions such as frame joint toughness areas
Thinking.
Related recoverable function concrete frame structure bean column node includes: the invention application No. is 201310206074.6
The prefabricated bean column node of the recoverable function of patent disclosure comprising precast reinforced concrete beam, presstressed reinforcing steel, is answered at column component in advance
Power muscle anchorage.Prefabricated beam-ends has arc groove, and prefabricated styletable has arc plush copper or prefabricated beam-ends has arc plush copper, and prefabricated styletable has
Arc groove.The plush copper of beam-ends groove and column is just agreed with or the groove of beam-ends plush copper and column just agrees with.Run through by tensioning
Column horizontal hole, beam horizontal hole without presstressed reinforcing steel so that precast beam, prefabricated post is become whole.Application No. is
A kind of part prestressing force assembled energy-dissipation beam column node disclosed in 201610044530.5 patent of invention, including precast concrete
Column, precast concrete beam, replaceable energy consumption stick, presstressed reinforcing steel, anchorage；The precast concrete column reserves prestressing force in node area
Muscle duct and bracket；The precast concrete beam is pretensioned prestressed concrete girder, is equipped with presstressed reinforcing steel duct, beam among beam-ends section
Lower part is held to be equipped with tongue and groove；The precast concrete beam is shelved on the bracket, is crimped and is fixed by local post-tensioned prestressing muscle,
Upper surface cast-in-place concrete in floor height；The replaceable energy consumption stick is installed on the precast concrete beam upper and lower surface,
Quantity, specification and effect opportunity are designed according to different anti-seismic grade, when being located at lower surface, across the reserved of the bracket
Hole, exposed portion are coated by mortar.
Summary of the invention
Aiming at the problems existing in the prior art, it is an object of the present invention to: providing one kind can consume energy under geological process, ground
The beam-column joint of reinforced concrete frame of recoverable function after shake forms energy consumption and function in Ends
Can recovery district, improve node beam-ends toughness and energy dissipation capacity, to improve the anti-seismic performance of node region.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
Recoverable function steel bar concrete frame energy dissipation node, including orthogonal column component and beam, the column structure
The region that part intersects with the beam is provided with the column component of energy dissipation node, and the column component of the energy dissipation node is logical
The beam for crossing energy dissipation node is connected with the beam, beam, the energy dissipation section of the energy dissipation node
The column component of point is poured and is smash by cement-base composite material (ECC) and framework of steel reinforcement, and the column component and beam are by coagulation
Soil and framework of steel reinforcement pour ramming at.
Optionally, the framework of steel reinforcement of the beam of the energy dissipation node includes several common longitudinal steel being evenly arranged
Muscle, ＂ X ＂ shape longitudinal reinforcement, for fastening several stirrups of the common longitudinal reinforcement, ＂ X ＂ shape longitudinal reinforcement.
Optionally, the transfer angle of the ＂ X ＂ shape longitudinal reinforcement is 25 degree ~ 65 degree.
Optionally, the part that bends up of the ＂ X ＂ shape longitudinal reinforcement is not provided with stirrup, and stirrup is arranged in remaining section.
Optionally, the column component of the energy dissipation node from top to bottom includes three sections of energy dissipation joint cores, institute
The framework of steel reinforcement for stating the column component of energy dissipation node includes several column longitudinal reinforcements being vertically arranged, is horizontally installed on interlude
The beam longitudinal reinforcement anchor bar of energy dissipation joint cores, distribution ground binds each column longitudinal reinforcement and Liang Zong along the vertical direction
To the node stirrup of Bar Anchorage reinforcing bar.
Optionally, the beam of the energy dissipation node, the column component of energy dissipation node, beam 400, column component
Cross-sectional shape be rectangle, circle or abnormity.
Optionally, the cement-base composite material (ECC) mainly by cement, admixture, fine aggregate, fiber, additive,
Water is made.
Optionally, the admixture includes flyash, miberal powder, silicon ash or regenerated powder.
Optionally, the fine aggregate includes silica sand or rubber powder.
Optionally, the fiber includes polyvinyl alcohol (PVA), ultra high molecular polyethylene (PE), polypropylene (PP), gathers
To penylene benzo dioxazole (PBO), glass, carbon, basalt or metallic fiber.
Recoverable function steel bar concrete frame energy dissipation node provided by the invention, the beam of the energy dissipation node
It holds toughness area using optimization dissipative member design, makes reinforced concrete frame node that there is better toughness, Crack Control characteristic
And energy absorption capability, realize reinforced concrete structure can consume energy under geological process, the recoverable function after geological process.
Compared with prior art, beneficial effects of the present invention are as follows:
One, for can restore and the aseismatic design concept of energy-dissipating and shock-absorbing, recoverable function steel bar concrete frame of the invention
The beam-ends toughness area of energy dissipation node uses ECC material, in conjunction with node beam-ends ＂ X ＂ shape longitudinal reinforcement, realizes under geological process
Beam-ends to node formed energy consumption and function can recovery district, and meet bending resistance, shear behavior requirement.
Two, a kind of beam-ends toughness area of node of the invention uses the bean column node of ECC material, in ECC material and commonly
Concrete intersection is all completed using cast-in-place mode, according to cement-base composite material (ECC), concreting order, disposably
Completion is poured, increases interfacial bond property without the reserved groove of prefabricated and setting, the method can be solved preferably can recovery nodes
Construction the problem of.
Three, a kind of beam-ends toughness area of node of the invention uses the bean column node of ECC material, makes full use of ECC material
Expect excellent tensile property, at node and after connected beam-ends, styletable application ECC material, is held in the shearing resistance for guaranteeing node
While carrying power and anti-seismic performance, suitably reduce the hooping bars layout of beam-column joint core, the invention can reduce applying for node area
Work difficulty and cost of labor, and the overstocked construction difficult problem of node area stirrup can be efficiently solved.
Four, a kind of beam-ends toughness area of the invention uses the bean column node of ECC material, it is contemplated that the cost of manufacture phase of ECC
To higher, the characteristics of according to frame (shear wall) structure each section stress, ECC material is used in node and beam column end regions
It pours, other parts still use normal concrete, so that application of the ECC material in engineering has preferable economic performance.
Five, as the development of power industry, the flyash discharge capacity of coal-burning power plant increase year by year, become the current discharge capacity in China
One of biggish industrial residue.Recoverable function steel bar concrete frame energy dissipation node of the invention, used ECC
Material can use the admixture of larger proportion, such as flyash is from the flue gas fine ash after coal combustion, and flyash is coal-fired electricity
The equal solid waste of factory's discharge.A large amount of industrial residues will be used to make structural elements as admixture, be conducive to waste again
It makes profits use, meets the energy-saving and emission-reduction theory that China is advocated in world wide, therefore the present invention has significant environmental benefit.
Detailed description of the invention
Fig. 1 is the structural representation of the recoverable function steel bar concrete frame energy dissipation node of the embodiment of the present invention
Figure；
Fig. 2 is the structure of the recoverable function steel bar concrete frame energy dissipation node interior joint beam of inventive embodiments
Schematic diagram；
Fig. 3 is energy dissipation joint core in the recoverable function steel bar concrete frame energy dissipation node of inventive embodiments
Area, energy dissipation node column component structural schematic diagram.
In figure: 10- recoverable function steel bar concrete frame energy dissipation node；100- energy dissipation joint core
Area；101- node stirrup；102- beam longitudinal reinforcement anchor bar；The cement-base composite material of 103- styletable；200- energy dissipation
The beam of node；201- ＂ X ＂ shape longitudinal reinforcement；202- longitudinal reinforcement；203- stirrup；The cement base composite wood of 204- beam-ends
Material；The column component of 300- energy dissipation node；301- column longitudinal reinforcement；400- frame beam；500- column component.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in figures 1 and 3, recoverable function steel bar concrete frame energy dissipation node, including orthogonal column structure
Part 500 and beam 400, the region that the column component 500 intersects with the beam 400 are provided with the column of energy dissipation node
Component 300, the beam 200 and the beam 400 that the column component 300 of the energy dissipation node passes through energy dissipation node
Be connected, the beam 200 of the energy dissipation node, energy dissipation node column component 300 by cement-base composite material
(ECC) pour and smash with framework of steel reinforcement, the column component 500 and beam 400 by concrete and framework of steel reinforcement pour ramming at.
As shown in Fig. 2, the framework of steel reinforcement of the beam 200 of the energy dissipation node include be evenly arranged it is several common
Longitudinal reinforcement 202, ＂ X ＂ shape longitudinal reinforcement 201, if for fastening the common longitudinal reinforcement 202, ＂ X ＂ shape longitudinal reinforcement 201
Dry stirrup 203, the transfer angle ɑ of the ＂ X ＂ shape longitudinal reinforcement 201 are 25 degree ~ 65 degree, and the ＂ of ＂ X described in the present embodiment shape is longitudinal
The transfer angle ɑ of reinforcing bar 201 is 45 degree.
In addition, the part that bends up of the ＂ X ＂ shape longitudinal reinforcement 201 is not provided with stirrup 203, remaining section in the present embodiment
Stirrup 203 is set, convenient for the smooth deformation and recovery of ＂ X ＂ shape longitudinal reinforcement 201.
As shown in figure 3, the column component 300 of the energy dissipation node from top to bottom includes three sections of energy dissipation joint cores
Area 100, the framework of steel reinforcement of the column component 300 of the energy dissipation node include several column longitudinal reinforcements 301 being vertically arranged, cross
To be arranged in interlude energy dissipation joint cores 100 beam longitudinal reinforcement anchor bar 102, along the vertical direction be distributed tie up
Prick the node stirrup 101 of each column longitudinal reinforcement 301 and beam longitudinal reinforcement anchor bar 102.
The beam 200 of the energy dissipation node, the column component 300 of energy dissipation node, beam 400, column component
500 cross-sectional shape is rectangle, circle, or the combined abnormity component such as rectangle and circle, i.e. the shape of profile can
To be set according to actual conditions.
Cement-base composite material described in the present embodiment (ECC) is mainly by cement, admixture, fine aggregate, fiber, additional
Agent, water are made, and since cement-base composite material (ECC) is the widely used prior art, those skilled in the art can be according to need
It wants and Its Relevant Technology Standards determines corresponding proportion, details are not described herein.
Specifically, the admixture includes flyash, miberal powder, silicon ash or regenerated powder.The fine aggregate includes silicon
Sand or rubber powder.The fiber includes polyvinyl alcohol (PVA), ultra high molecular polyethylene (PE), polypropylene (PP), gathers to benzene
Support benzo dioxazole (PBO), glass, carbon, basalt or metallic fiber.
Recoverable function steel bar concrete frame energy dissipation node provided in this embodiment, the energy dissipation node
Beam-ends toughness area makes reinforced concrete frame node have better toughness, Crack Control special using optimization dissipative member design
Property and energy absorption capability, realize reinforced concrete structure can consume energy under geological process, the recoverable function after geological process
Energy.
Recoverable function steel bar concrete frame energy dissipation node 10 provided in this embodiment is in armored concrete
The delivery position of frame structural beam, column, i.e., the present invention is to provide a kind of beam-ends toughness area use ECC material bean column node,
In view of the cost of manufacture of ECC is relatively high, the characteristics of according to frame (shear wall) structure each section stress, in node and beam column
End regions are poured using ECC material, and other parts still use normal concrete, so that ECC material answering in engineering
With with preferable economic performance.
The present embodiment under geological process energy dissipation joint cores 100, energy dissipation node beam 200, anti-
300 co-ordination of column component for shaking energy dissipation node, using the cement-base composite material 204(ECC of beam-ends) the ＂ X ＂ shape that pours is vertical
The beam toughness area of node is formed to reinforcing bar 201, is generated toughness prior to column in the beam 200 of energy dissipation node first and is become
Shape, consumption and the energy for absorbing Seismic input frame structure.Due to the high tenacity of the cement-base composite material 103(ECC of styletable
With bending up for ＂ X ＂ shape longitudinal reinforcement 201 so that reinforced concrete frame structure is being restored to original state after the earthquake, together
When ＂ X ＂ shape longitudinal reinforcement 201 can resist the shearing of beam-ends, reduce the configuration of this region stirrup.Realize armored concrete knot
Structure can consume energy under geological process, the recoverable function after geological process, and the casualties and disaster relief expense of earthquake is greatly decreased
With, therefore with good economic efficiency, social benefit and environmental benefit.
The beam-ends toughness area of the present embodiment has reinforced concrete frame node more preferable using optimization dissipative member design
Toughness, Crack Control characteristic and energy absorption capability, the cohesive force that can prevent geological process underbeam from indulging muscle and concrete moves back
Change caused fastening invalidation and perforation sliding occurs, and prevents column or destruction of a node and permanent beam hinge machine cannot be formed
Structure；Meanwhile the position that also effective control beam-ends deformation occurs.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other are any without departing from Spirit Essence of the invention
With changes, modifications, substitutions, combinations, simplifications made under principle, equivalent substitute mode should be, be included in of the invention
Within protection scope.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630644.3A CN109853727B (en) | 2018-12-29 | 2018-12-29 | Recoverable functional reinforced concrete frame anti-seismic energy consumption node |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630644.3A CN109853727B (en) | 2018-12-29 | 2018-12-29 | Recoverable functional reinforced concrete frame anti-seismic energy consumption node |
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| CN109853727B CN109853727B (en) | 2024-07-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096116A (en) * | 2020-10-10 | 2020-12-18 | 福州大学 | Reinforcing structure for improving earthquake-proof performance of earthquake-damage assembled frame structure, construction method and testing method |
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2018
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| CN112096116A (en) * | 2020-10-10 | 2020-12-18 | 福州大学 | Reinforcing structure for improving earthquake-proof performance of earthquake-damage assembled frame structure, construction method and testing method |
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