CN110080388A - A kind of connection structure and its construction method improving PC frame joint anti-seismic performance - Google Patents
A kind of connection structure and its construction method improving PC frame joint anti-seismic performance Download PDFInfo
- Publication number
- CN110080388A CN110080388A CN201910488922.4A CN201910488922A CN110080388A CN 110080388 A CN110080388 A CN 110080388A CN 201910488922 A CN201910488922 A CN 201910488922A CN 110080388 A CN110080388 A CN 110080388A
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- Prior art keywords
- node
- seismic performance
- restrained brace
- connection structure
- frame joint
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The present invention relates to a kind of connection structures for improving PC frame joint anti-seismic performance, including support column, several layers attachment beam is provided between adjacent two support columns, it is provided with ECC bean column node at the node that support column is connect with attachment beam, is provided with buckling restrained brace between two layers adjacent of attachment beam；The invention further relates to a kind of construction methods of connection structure for improving PC frame joint anti-seismic performance.Structure of the invention is reasonable, it is easy to operate, multi-way prevention can be provided by anti-buckling support, it can be with energy-dissipating and shock-absorbing, simultaneously by setting ECC bean column node, ductility, the energy dissipation capacity in node area can be improved, and reduce the width in crack area, it avoids node from occurring seriously to destroy in earthquake, is convenient for repairing and reinforcing to after node shake.
Description
Technical field
The present invention relates to a kind of connection structures and its construction method for improving PC frame joint anti-seismic performance.
Background technique
Engineered cementitious composite sill (Engineered Cementilious Composites, abbreviation ECC) is by water
A kind of composite material that mud, sand, water and mineral admixture are constituted has high-intensitive, high ductility, wear-resisting, antiacid alkali and weather-proof
The features such as property.ECC limit stretching strain can be stable reach 3% or more, and the ultimate tensile strength of concrete only has 0.01%, and tension is strong
The ultimate tensile strength for spending preferable reinforcing bar also only has 1%, shows great ductility.The compressive property of ECC and common reinforcing bar are mixed
Solidifying soil is quite.The maximum advantage of ECC is exactly the ductility of its superelevation, shows multiple crack growth under uniaxial direct tensile load action
Characteristic, maximum crack width are no more than 100 μm, spacing only 1-2mm.
Buckling restrained brace (Buckling Restrained Brace, abbreviation BRB) by core material, constrains core material buckling
A kind of supporting member of sleeve and non-cohesive material and packing material composition between core material and sleeve.In the effect of earthquake
Under, all axial forces are by supporting the core material at center to bear, and sleeve is supplied to core material bending limitation, bend when core material being avoided to be pressurized
Song, non-cohesive material pass to the power of peripheral material when can reduce or eliminate core material by axle power.Anti-buckling support, it is small shake and
Designed wind load effect is lower to be in elastic stage, provides enough rigidity to main body；Under middle shake, big shake and severe earthquake action, prevent
Buckling support enters energy consumption state prior to overall structure, generates biggish damping, most of energy of dissipation Seismic input, rapidly
The dynamic response for reducing structure, ensure that the safety of structure.Hysteresis earthquake energy when earthquake, damping energy consumption effect are brighter
It is aobvious.After earthquake, main structure residual deformation is small, and rehabilitation expense is low, even if individual support needs replacing, also easily.
Assembly concrete frame structure provides the anti-side rigidity of whole system mainly by beam column, and structure is whole partially soft,
Big earthquake centre easily generates excessive horizontal displacement and causes serious destruction, and to prevent pillar from buckling occurs in frame structure,
Layer height should not be arranged excessively high.So how to enhance the overall stiffness and anti-seismic performance of frame structure, avoids or delay it in earthquake
In destruction, the reliability of enhancing structure is still an important problem in engineering.Assembly concrete frame joint is one
Important structure position, the destruction of frame joint will lead to the collapsing and a large amount of casualties and economic damage of total
It loses.Under geological process, it must have enough intensity and ductility.To meet that " the strong weak component of node, cuts by force in Aseismic Design
The requirement of setting up defences of weak curved, strong column and weak beam ".
As it can be seen that this patent proposition replaces normal concrete with ECC in assembly concrete frame structure bean column node area
Technology, the cracking resistance of node can be improved, increase the ductility and energy dissipation capacity of structure.
Based on above discussion, a kind of use BRB damping is proposed, node increases structure ductility using ECC and reduces earthquake
In crack developing novel fabricated concrete frame structure, after pour node using ECC, multiple seismic-proof is set, significantly
Whole rigidity is increased, the energy-dissipating and shock-absorbing ability of structure is significantly improved.It, only need to be to as " fuse component " after shaking simultaneously
Anti-buckling support carries out local replacing, repairs to the slab column component of damage, original structure can continue to come into operation, and make structure
Reach the effect of " small shake is economic, and middle shake is not bad, and big shake is easily repaired, and aftershock is not fallen ".
Summary of the invention
In view of this, the object of the present invention is to provide it is a kind of improve PC frame joint anti-seismic performance connection structure and
Its construction method, it is structurally reasonable, it is easy to operate, multi-way prevention is provided by anti-buckling support, can be passed through simultaneously with energy-dissipating and shock-absorbing
ECC bean column node is set, ductility, the energy dissipation capacity in node area can be improved, and reduce the width in crack area, avoid node on ground
Earthquake centre occurs seriously to destroy, convenient for repairing and reinforcing to after node shake.
The technical scheme is that a kind of connection structure for improving PC frame joint anti-seismic performance, including support column,
It is provided with several layers attachment beam between adjacent two support columns, ECC beam is provided at the node that support column is connect with attachment beam
Column border node is provided with buckling restrained brace between two layers adjacent of attachment beam.
Further, the company of being provided between buckling restrained brace and support column, between buckling restrained brace and attachment beam
Fishplate bar.
Further, splice plate is provided between connecting plate and buckling restrained brace.
Further, it is additionally provided between splice plate and buckling restrained brace to the high-strength of fixed buckling restrained brace
Bolt.
Further, between connecting plate and support column, intumescent anchor bolt is provided between connecting plate and attachment beam.
Further, the buckling restrained brace is V-type support portion.
Further, the buckling restrained brace is single inclined shore portion.
Another technical solution provided by the invention is that a kind of connection structure for improving PC frame joint anti-seismic performance is applied
The connection structure including the raising PC frame joint anti-seismic performance: attachment beam (1) is lifted on support column it by work method
Afterwards, vertical formwork is set at bean column node, to divide cast-in-place concrete and ECC, is poured ECC using the method that layering is vibrated
In template, after the completion of ECC at pouring concrete after composite beam vibrates end and node is poured, this template is extracted out；(2) connecting plate
It is embedded on attachment beam and bean column node region, connecting plate is fixed using intumescent anchor bolt；(3) splice plate is fixed on
Have on buckling restrained brace, then to there is buckling restrained brace to lift, using high-strength bolt by buckling restrained brace end
Splice plate be locked with connecting plate, and then buckling restrained brace is fixed, completes the peace of buckling restrained brace
Dress.
Compared with prior art, the beneficial effects of the present invention are: (1) present invention is equipped between support column and attachment beam and bends
Song constraint support can transfer the force to buckling restrained brace when generation earthquake draws high support column and attachment beam generation,
The destruction that buckling restrained brace can generate earthquake is consumed energy, and support column and attachment beam are protected；(2) anti-buckling support can be passed through
Multi-way prevention can be provided, it can be with energy-dissipating and shock-absorbing；(3) buckling restrained brace is assembled, and installation is conveniently replaceable after damage；
(4) in support column and attachment beam junction, it is equipped with ECC bean column node, ECC has superelevation ductility, is not easy when earthquake generates
Generate crack；(5) by setting ECC bean column node, ductility, the energy dissipation capacity in node area can be improved, and reduce crack area
Width avoids node from occurring seriously to destroy in earthquake, is convenient for repairing and reinforcing to after node shake.
To can be more clearly understood the above objects, features and advantages of the present invention, with reference to the accompanying drawing to the present invention
Specific embodiment elaborate.
Detailed description of the invention
Fig. 1 is structural representation Fig. 1 of the embodiment of the present invention；
Fig. 2 is structural representation Fig. 2 of the embodiment of the present invention；
Fig. 3 is structural representation Fig. 3 of the embodiment of the present invention；
Fig. 4 is the connection schematic diagram of buckling restrained brace of the embodiment of the present invention and ECC bean column node；
Fig. 5 is the connection schematic diagram of buckling restrained brace of the embodiment of the present invention and attachment beam；
In figure: 100- support column；200- attachment beam；300-ECC bean column node；400- buckling restrained brace；410- splice plate；
500- connecting plate；600- high-strength bolt；700- intumescent anchor bolt.
Specific embodiment
As shown in Fig. 1 ~ 5, a kind of connection structure improving PC frame joint anti-seismic performance, including support column 100, adjacent
It is provided with several layers attachment beam 200 between two support columns 100, is arranged at the node that support column 100 is connect with attachment beam 200
There is ECC bean column node 300, is provided with buckling restrained brace 400 between adjacent two layers of attachment beam 200.
Further, between buckling restrained brace 400 and support column 100, buckling restrained brace 400 and attachment beam 200 it
Between be provided with connecting plate 500.
In the present embodiment, splice plate 410 is provided between connecting plate 500 and buckling restrained brace 400.
In the present embodiment, it is additionally provided between splice plate 410 and buckling restrained brace 400 to the buckling-restrained branch of fixation
The high-strength bolt 600 of support 400.
In the present embodiment, it is provided between connecting plate 500 and support column 100, between connecting plate 500 and attachment beam 200
Intumescent anchor bolt 700.
In the present embodiment, the buckling restrained brace 400 is V-type support portion.
In the present embodiment, the buckling restrained brace 400 is single inclined shore portion.
A kind of construction method for the connection structure improving PC frame joint anti-seismic performance, including the raising PC frame section
The connection structure of point anti-seismic performance: (1) after attachment beam being lifted on support column, being arranged vertical formwork at bean column node,
To divide cast-in-place concrete and ECC, ECC is cast in template using the method that layering is vibrated, the pouring concrete after composite beam
After the completion of the ECC at end and node that vibrates is poured, this template is extracted out；(2) connecting plate is embedded on attachment beam and beam column node area
Domain is fixed connecting plate using intumescent anchor bolt；(3) being fixed on splice plate has on buckling restrained brace, then to having
Buckling restrained brace is lifted, and lock admittedly by the splice plate of buckling restrained brace end and connecting plate using high-strength bolt
It is fixed, and then buckling restrained brace is fixed, complete the installation of buckling restrained brace.
The present invention is equipped with buckling restrained brace between support column and attachment beam, when generation earthquake is to support column and attachment beam
When generation is drawn high, buckling restrained brace can be transferred the force to, the destruction that buckling restrained brace can generate earthquake consumes
Can, protect support column and attachment beam；Multi-way prevention can be provided by anti-buckling support, it can be with energy-dissipating and shock-absorbing；It is buckling-restrained
Support is assembled, and installation is conveniently replaceable after damage；In support column and attachment beam junction, it is equipped with ECC bean column node,
ECC has superelevation ductility, does not allow to be also easy to produce crack when earthquake generates；By the way that ECC bean column node is arranged, node area can be improved
Ductility, energy dissipation capacity, and reduce the width in crack area, avoid node from occurring seriously to destroy in earthquake, convenient for shaking to node
It repairs and reinforces afterwards.
Aforesaid operations process and software and hardware configuration are only used as presently preferred embodiments of the present invention, are not intended to limit the present invention
The scope of the patents, it is all using equivalents made by description of the invention and accompanying drawing content, be applied directly or indirectly in phase
Technical field is closed, is included within the scope of the present invention.
Claims (8)
1. a kind of connection structure for improving PC frame joint anti-seismic performance, it is characterised in that: including support column, in adjacent two branch
It is provided with several layers attachment beam between dagger, ECC bean column node is provided at the node that support column is connect with attachment beam, in phase
Buckling restrained brace is provided between two layers adjacent of attachment beam.
2. the connection structure according to claim 1 for improving PC frame joint anti-seismic performance, it is characterised in that: buckling-restrained
Connecting plate is provided between support and support column, between buckling restrained brace and attachment beam.
3. the connection structure according to claim 2 for improving PC frame joint anti-seismic performance, it is characterised in that: in connecting plate
Splice plate is provided between buckling restrained brace.
4. the connection structure according to claim 3 for improving PC frame joint anti-seismic performance, it is characterised in that: in splice plate
The high-strength bolt to fixed buckling restrained brace is additionally provided between buckling restrained brace.
5. it is according to claim 4 improve PC frame joint anti-seismic performance connection structure, it is characterised in that: connecting plate with
Between support column, intumescent anchor bolt is provided between connecting plate and attachment beam.
6. the connection structure according to claim 1 for improving PC frame joint anti-seismic performance, it is characterised in that: the buckling
Constraint support is V-type support portion.
7. the connection structure according to claim 1 for improving PC frame joint anti-seismic performance, it is characterised in that: the buckling
Constraint support is single inclined shore portion.
8. a kind of construction method for the connection structure for improving PC frame joint anti-seismic performance, including mention as claimed in claim 5
The connection structure of high PC frame joint anti-seismic performance, it is characterised in that: (1) after attachment beam being lifted on support column, in beam
Vertical formwork is set at Column border node, to divide cast-in-place concrete and ECC, ECC is cast in by template using the method that layering is vibrated
It is interior, after the completion of ECC at pouring concrete after composite beam vibrates end and node is poured, extract this template out；(2) connecting plate is embedded in
On attachment beam and bean column node region, is fixed connecting plate using intumescent anchor bolt；(3) being fixed on splice plate has buckling
In constraint support, then to there is buckling restrained brace to lift, using high-strength bolt by the splicing of buckling restrained brace end
Plate is locked with connecting plate, and then buckling restrained brace is fixed, and completes the installation of buckling restrained brace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488922.4A CN110080388A (en) | 2019-06-06 | 2019-06-06 | A kind of connection structure and its construction method improving PC frame joint anti-seismic performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910488922.4A CN110080388A (en) | 2019-06-06 | 2019-06-06 | A kind of connection structure and its construction method improving PC frame joint anti-seismic performance |
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| CN110080388A true CN110080388A (en) | 2019-08-02 |
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| CN201910488922.4A Pending CN110080388A (en) | 2019-06-06 | 2019-06-06 | A kind of connection structure and its construction method improving PC frame joint anti-seismic performance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155642A (en) * | 2020-02-17 | 2020-05-15 | 上海徐汇规划建筑设计有限公司 | Anti-seismic frame structure of high-rise building |
| 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 |
| CN112096115A (en) * | 2020-10-10 | 2020-12-18 | 福州大学 | Reinforcing structure for improving earthquake-proof performance of earthquake-damaged RC frame structure and construction method |
| CN113216204A (en) * | 2021-04-30 | 2021-08-06 | 中建四局第六建设有限公司 | Device for reinforcing horizontal support replacing structure and construction method thereof |
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| CN102505760A (en) * | 2011-11-17 | 2012-06-20 | 东南大学 | Prefabricated combined beam and column node member |
| CN106013432A (en) * | 2016-05-24 | 2016-10-12 | 东南大学 | Joint connecting structure in high-ductility assembled integrated frame and construction method |
| CN106988552A (en) * | 2017-05-19 | 2017-07-28 | 福州大学 | Existing reinforced concrete structure reinforcing construction and its reinforcement means based on BRB |
| CN210288683U (en) * | 2019-06-06 | 2020-04-10 | 福建工程学院 | Connection structure for improving earthquake resistance of PC frame node |
-
2019
- 2019-06-06 CN CN201910488922.4A patent/CN110080388A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505760A (en) * | 2011-11-17 | 2012-06-20 | 东南大学 | Prefabricated combined beam and column node member |
| CN106013432A (en) * | 2016-05-24 | 2016-10-12 | 东南大学 | Joint connecting structure in high-ductility assembled integrated frame and construction method |
| CN106988552A (en) * | 2017-05-19 | 2017-07-28 | 福州大学 | Existing reinforced concrete structure reinforcing construction and its reinforcement means based on BRB |
| CN210288683U (en) * | 2019-06-06 | 2020-04-10 | 福建工程学院 | Connection structure for improving earthquake resistance of PC frame node |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155642A (en) * | 2020-02-17 | 2020-05-15 | 上海徐汇规划建筑设计有限公司 | Anti-seismic frame structure of high-rise building |
| CN111155642B (en) * | 2020-02-17 | 2021-07-09 | 上海徐汇规划建筑设计有限公司 | Anti-seismic frame structure of high-rise building |
| 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 |
| CN112096115A (en) * | 2020-10-10 | 2020-12-18 | 福州大学 | Reinforcing structure for improving earthquake-proof performance of earthquake-damaged RC frame structure and construction method |
| CN113216204A (en) * | 2021-04-30 | 2021-08-06 | 中建四局第六建设有限公司 | Device for reinforcing horizontal support replacing structure and construction method thereof |
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