CN106869326B - Frame system and construction method composed of hollow concrete-filled steel tube integral joints - Google Patents
Frame system and construction method composed of hollow concrete-filled steel tube integral joints Download PDFInfo
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- CN106869326B CN106869326B CN201710143673.6A CN201710143673A CN106869326B CN 106869326 B CN106869326 B CN 106869326B CN 201710143673 A CN201710143673 A CN 201710143673A CN 106869326 B CN106869326 B CN 106869326B
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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
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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Abstract
The frame system and construction method constituted the present invention relates to hollow steel tube concrete integral node, the frame system that this hollow steel tube concrete integral node is constituted is connected and composed by coupled column and combination beam by node, combination beam is horizontally set between coupled column, and node is the housing monoblock type node of inner-concrete with high intensity；Coupled column is sectional type hollow tube concrete combination column, combination beam is sectional type external prestressing honeycomb type I-beam, the side at sectional type external prestressing honeycomb type I-beam both ends is respectively provided with beam connecting plate, the lower end of beam connecting plate has beam dart, bolt hole is set on beam connecting plate, it is also provided with presstressed reinforcing steel hole on beam dart, passes through beam dart stretch-draw anchor presstressed reinforcing steel；Node is fixedly connected by upper connection ring, lower connection ring with coupled column, and node is connected by the beam connecting plate of node dart and combination beam.The present invention solves the problems, such as Concrete-filled Double Skin Steel Tube Columns and girder connection connection complexity.
Description
Technical field
The present invention relates to the house frame structures in civil engineering structure field, and in particular to hollow steel tube concrete is whole
The frame system and construction method that node is constituted.
Background technique
In conventional rebar concrete frame structure system, frame joint is mostly reinforced concrete cast-in-situ node, this kind of reinforcing bar
Concrete joint needs the subsequent casting concrete of formwork, assembling reinforcement as frame beam column, and not only bearing capacity is lower for component, applies
The work period is partially long, and easily destroys in geological process lower node.With the rapid development of civil construction industry, concrete filled steel tube
Structure is widely used, and hollow sandwich concrete structure is a kind of new structure based on concrete filled steel tube,
Concrete-filled double skin steel tube is the combined member that casting concrete is formed between inside and outside two layers concentric steel pipe, outer and inner tube
Effect of contraction is generated instead of reinforcing bar and to sandwich concrete, concrete is in three dimension stress state compressive property and is improved,
Plasticity and toughness properties are improved, and compared with traditional concrete filled steel tubular member, hollow sandwich steel tube concrete pole is whole
With from heavy and light, the characteristic that bending stiffness is big, anti-seismic performance is good and fire resistance is good, but Concrete-filled Double Skin Steel Tube Columns-steel
The complexity of the node connection of girder construction system but constrains the application of hollow sandwich steel tube concrete pole in practical projects,
Therefore propose that a kind of rationally convenient and fast node connection type is extremely urgent.
Summary of the invention
It is an object of the present invention to provide the frame system that hollow steel tube concrete integral node is constituted, this cored steels
The frame system that pipe concrete integral node is constituted is for solving Concrete-filled Double Skin Steel Tube Columns and girder connection connection complexity
Problem, while can avoid node connection hardly possible, the problem of easily destruction, it is a further object to provide this cored steels
The construction method for the frame system that pipe concrete integral node is constituted.
The technical solution adopted by the present invention to solve the technical problems is: this hollow steel tube concrete integral node is constituted
Frame system connected and composed by coupled column and combination beam by node, combination beam is horizontally set between coupled column, and node is
The housing monoblock type node of inner-concrete with high intensity；Housing monoblock type node includes the node with upper connection ring and lower connection ring
Bolt hole is equipped in outer tube, upper connection ring and lower connection ring, upper enforced loop plane is arranged at node outer tube top, and lower reinforcing ring is arranged at lower part
Plate, upper enforced loop plane extend to form the top flange of I-shaped end carriage horizontally outward, and lower enforced loop plane extends to form work horizontally outward
The lower flange of font end carriage is node web between the upper and lower edge of a wing of I-shaped end carriage, and the end of I-shaped end carriage passes through node
Dart connection, node dart are located at the setting of the position between the top flange of I-shaped end carriage and the lower flange of I-shaped end carriage
Bolt hole, node dart are located at the position under I-shaped end carriage equipped with presstressed reinforcing steel hole；Coupled column is sectional type hollow tube
Concrete combination column, combination beam are sectional type external prestressing honeycomb type I-beam, sectional type external prestressing honeycomb type I-shaped
The side at beam both ends is respectively provided with beam connecting plate, and the lower end of beam connecting plate has beam dart, bolt hole, beam is arranged on beam connecting plate
It is also provided with presstressed reinforcing steel hole on dart, passes through beam dart stretch-draw anchor presstressed reinforcing steel；Node passes through upper connection ring, lower connection
Ring is fixedly connected with coupled column, and node is connected by the beam connecting plate of node dart and combination beam.
Sectional type hollow tube concrete combination column is by sectional type inner tube, sectional type outer tube and sandwich concrete in above scheme
It constitutes, sectional type inner tube, sectional type outer tube have connection ring, arrange shear stud on sectional type inner tube outer surface, saving
Inner bushing ring is arranged in the inside of segmentation inner tube across a certain distance, prevents sectional type inner tube from buckling occurs.The connection ring of sectional type inner tube
It is mutually staggered with the connection ring of sectional type outer tube, avoids being bolted at sustained height.Sectional type inner tube is connected first, then
Connect sectional type outer tube, it is ensured that sectional type inner tube is consistently higher than sectional type outer tube, in sectional type inner tube, the interlayer of sectional type outer tube
In pour high-strength concrete.
Beam-ends is provided with weakening section by sectional type honeycomb type I-beam in above scheme, and weakening section has arc groove, knot
Structure system promotes beam-ends plastic hinge to first occur at and weakens position after entering elastic-plastic behavior, realizes the outer of beam-ends plastic hinge
It moves, to guarantee the integrity of integral node.
The frame system that a kind of hollow steel tube concrete integral node is constituted is connected with combination beam by node by coupled column
It constitutes, combination beam is horizontally set between coupled column, and node is the housing monoblock type node of inner-concrete with high intensity；Housing is whole
Formula node includes the node outer tube with upper connection ring and lower connection ring, is equipped with bolt hole in upper connection ring and lower connection ring,
Upper enforced loop plane is arranged at node outer tube top, and lower enforced loop plane is arranged at lower part, and upper enforced loop plane extends to form inner cavity horizontally outward and communicates
I-shaped end carriage top flange, lower enforced loop plane extends to form the lower flange for the I-shaped end carriage that inner cavity communicates horizontally outward,
It is node web between the upper and lower edge of a wing of I-shaped end carriage, the end of I-shaped end carriage is connected by node connecting plate, and node connects
Bolt hole is arranged in fishplate bar；Coupled column is sectional type hollow tube concrete combination column, and combination beam is sectional type external prestressing honeycomb
The side of type I-beam, sectional type external prestressing honeycomb type I-beam both ends is respectively provided with beam connecting plate, the lower end of beam connecting plate
With beam dart, bolt hole is set on beam connecting plate, presstressed reinforcing steel hole is also provided on beam dart, passes through beam dart tensioning
Anchoring prestress muscle；Node is fixedly connected by upper connection ring, lower connection ring with coupled column, and node passes through node connecting plate and group
Close the weakening section connection of beam；Weaken section be it is dismountable, for weakening section with arc groove, the both ends for weakening section are provided with weakening section
Connecting plate, weakens section and weakens section connecting plate by one end and connect with combination beam, weakening section by other end weakening section connecting plate and
The connection of node end carriage.
The honeycomb type hole of sectional type external prestressing honeycomb type I-beam can be round, hexagon and more in above scheme
Side shape, web can be plate, be also possible to folded plate or sine curve template.
Presstressed reinforcing steel can be linear in above scheme.
In steering block of the honeycomb type I-beam lower disposed with inner groovy in above scheme, presstressed reinforcing steel formed broken line type or
Person's shaped form, to increase the rigidity of beam, Reducing distortion.
Transverse stiffener is arranged on the i-shaped beams web of honeycomb type I-beam in above scheme, can increase the steady of web
It is qualitative.
Above scheme interior joint end beam opening, convenient for passing through for Architectural Equipment and pipeline.
The construction method for the frame system that above-mentioned hollow concrete filled steel tube integral node is constituted:
The steel member of prefabricated needs, including sectional type outer tube, sectional type inner tube, sectional type honeycomb are welded in factory first
Type I-beam, node, sectional type outer tube and sectional type inner tube and basis realization is affixed, and sectional type outer tube is higher by basic 0.5m,
Sectional type inner tube is higher by 0.5m than sectional type outer tube, and sectional type inner tube is staggered with sectional type outer tube link position, then to segment
High-strength concrete is poured in formula outer tube and sectional type inner tube interlayer, after concrete reaches some strength, continues to connect in sectional type
Pipe then reconnects sectional type outer tube, it is ensured that sectional type inner tube is consistently higher than sectional type outer tube, and at the node in sectional type
The high egress a distance of pipe, reaches pre-designed height；After all sectional type hollow concrete coupled columns connect,
High-strength concrete is poured in sectional type outer tube and sectional type inner tube interlayer, forms hollow tube concrete combination column；Node is installed,
It is connected by the sectional type outer tube of the lower connection ring of node and coupled column, by high-strength bolt by sectional type honeycomb type beam and node
Connection, welds junction after connection；Then mixed to pouring at the sectional type inner tube of node and sectional type outer tube interlayer
Solidifying soil, maintenance form bottom group frame system after reaching some strength, then successively the construction second layer to top layer.
The invention has the following advantages:
1, this jacket-type integral node power transmission proposed by the present invention is clear, convenient construction, can be fabricated into factory existing
Field installation, speed of application is fast, shortens the construction period, obtains better economic benefit.
2, the sectional type hollow tube concrete combination column bending stiffness that the present invention uses is big, anti-seismic performance is good, the class formation
It is fused together steel with concrete structure, has given full play to the mechanical property of material.And the interior steel pipe in coupled column with
Outer steel pipe can be installed at the scene, easy for construction, can also double as template, avoid the use of a large amount of templates.
3, the sectional type honeycomb type I-shaped Liangqi bending stiffness that the present invention uses is big, bearing capacity is high, meets large bay system
Span requirement, and tensioned prestressing bar can further improve the rigidity of component below beam.
4, it can punch on housing monoblock type node end carriage in the present invention, convenient for passing through for Architectural Equipment and pipeline.
5, the steering block with inner groovy under the beam that uses of the present invention, below can the various forms of presstressed reinforcing steels of tensioning, significantly
Reduce the deformation of component.
6, the sectional type honeycomb type I-beam web that the present invention uses is plate, folded plate and sine curve template, Ke Yizeng
The contact area of big web and the edge of a wing, further increase component bearing capacity and anti-buckling ability.
7, the sectional type honeycomb weakening type I-beam that the present invention uses not only remains the excellent of sectional type honeycomb type I-beam
Point also makes structural system after entering elastic-plastic behavior, promotes beam-ends plastic hinge to first occur at and weakens position, realizes beam-ends
The outer shifting of plastic hinge, to guarantee the integrity of integral node.
8, the dissipative links block that the disconnectable edge of a wing and web that the present invention uses weaken, ensures plastic hinge under rarely occurred earthquake
Occur on dissipative links block, macroseism later repairs structural system, can replace the dissipative links block locally weakened, to protect
Demonstrate,proving overall structure still can normal service.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is housing monoblock type node schematic diagram；
Fig. 3 is the housing monoblock type node schematic diagram that node end carriage can punch；
Fig. 4 is hollow tube Combined concrete column section type；
The prominent schematic diagram of sectional type inner tube before Fig. 5 is installation housing monoblock type node；
Fig. 6 is the node schematic diagram for pouring concrete；
Fig. 7 is 1-1 sectional view in Fig. 6；
Fig. 8 is the connection schematic diagram of honeycomb type I-beam and node；
Fig. 9 is the connection plan view of honeycomb type I-beam and node；
Figure 10 is the connection schematic diagram for weakening the honeycomb type I-beam and node of section with replaceable；
Figure 11 is the schematic diagram for weakening section；
Figure 12 is the external prestressing sectional type honeycomb type I-beam of the prominent connecting plate of leukorrhagia；
Figure 13 is external prestressing honeycomb type I-beam of the setting with inner groovy steering block under beam；
Figure 14 is the I-beam that web uses sine curve template.
In figure: enforced loop plane on the lower 6 node outer tube 7 of connection ring of connection ring 5 on 1 coupled column, 2 combination beam, 3 node 4
8 lower 9 top flange of enforced loop plane, 10 node dart, 11 node web, 12 bolt hole, 13 lower flange, 14 beam connecting plate, 15 sections
It is pre- that 18 presstressed reinforcing steel hole of segmentation inner tube 16 sectional type outer tube, 17 shear stud, 19 high-strength concrete, 20 hole 21 weakens section 22
Steering block 24 inner bushing ring 25 of the stress rib 23 with inner groovy weakens section connecting plate.
Specific embodiment
The present invention will be further described below with reference to the drawings:
Embodiment 1:
In conjunction with shown in Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 12, Figure 13, Figure 14, this hollow steel tube is mixed
The frame system that solidifying soil integral node is constituted is connected and composed by coupled column 1 and combination beam 2 by node 3, and combination beam 2 is horizontally disposed
Between coupled column 1, node 3 is the housing monoblock type node of inner-concrete with high intensity；Housing monoblock type node includes with upper
Bolt hole 12, node outer tube 6 are equipped in the node outer tube 6 of connection ring 4 and lower connection ring 5, upper connection ring 4 and lower connection ring 5
Upper enforced loop plane 7 is arranged at top, and lower enforced loop plane 8 is arranged at lower part, and upper enforced loop plane 7 extends to form the upper of I-shaped end carriage horizontally outward
The edge of a wing 9, lower enforced loop plane 8 extend to form the lower flange 13 of I-shaped end carriage horizontally outward, the top flange 9 of I-shaped end carriage, under
It is node web 11 between the edge of a wing 13, the end of I-shaped end carriage is connected by node dart 10, and node dart 10 is located at
Bolt hole 12, node dart 10 is arranged in position between the top flange 9 of I-shaped end carriage and the lower flange 13 of I-shaped end carriage
Position under I-shaped end carriage is equipped with presstressed reinforcing steel hole 18；Coupled column 1 is sectional type hollow tube concrete combination column, group
Conjunction beam 2 is sectional type external prestressing honeycomb type I-beam, and the side at sectional type external prestressing honeycomb type I-beam both ends is equal
Beam connecting plate 14 is set, and the lower end of beam connecting plate 14 has beam dart, bolt hole 12, beam dart is arranged on beam connecting plate 14
On be also provided with presstressed reinforcing steel hole 18, pass through beam dart stretch-draw anchor presstressed reinforcing steel 22；Node 3 passes through upper connection ring 4, lower connection
Ring 5 is fixedly connected with coupled column 1, and node 3 is connect by node dart 10 with the beam connecting plate 14 of combination beam 2.
Sectional type hollow tube concrete combination column is made of sectional type inner tube 15, sectional type outer tube 16 and sandwich concrete,
Sectional type inner tube 15, sectional type outer tube 16 have connection ring, and shear stud 17 is arranged on 15 outer surface of sectional type inner tube,
Inner bushing ring 24 is arranged in the inside of sectional type inner tube 15 across a certain distance, prevents sectional type inner tube 15 from buckling occurs.Sectional type inner tube
15 connection ring and the connection ring of sectional type outer tube 16 mutually stagger, and avoid being bolted at sustained height.Connection section first
Then segmentation inner tube 15 connects sectional type outer tube 16, it is ensured that sectional type inner tube 15 is consistently higher than sectional type outer tube 16, in sectional type
Inner tube 15, sectional type outer tube 16 interlayer in pour high-strength concrete 19.
Sectional type external prestressing honeycomb type I-beam both ends are the dart in strap bolt hole 12, pass through plate tensioning anchor of dashing forward
Gu presstressed reinforcing steel 22, presstressed reinforcing steel 22 can be it is linear, can also be in honeycomb type I-beam lower disposed with inner groovy
Steering block 23, formation broken line type or shaped form.Honeycomb type hole can be circle, hexagon and polygon, and web can
To be plate, it is also possible to folded plate or sine curve template.
Transverse stiffener is arranged on the i-shaped beams web of honeycomb type I-beam of the present invention, can increase the stabilization of web
Property.
Beam-ends is provided with by sectional type honeycomb type I-beam in the present invention weakens section 21, and weakening section 21 has arc groove,
Structural system promotes beam-ends plastic hinge to first occur at and weakens position, realize beam-ends plastic hinge after entering elastic-plastic behavior
Outer shifting, to guarantee the integrity of integral node.
20(can be punched on the node end carriage of housing monoblock type node of the present invention refering to Fig. 3), it is convenient for Architectural Equipment and pipeline
Pass through.
Steel or FRP material can be used in coupled column inner and outer pipes, housing monoblock type node and beam of the present invention.
The construction method for the frame system that above-mentioned hollow concrete filled steel tube integral node is constituted:
Prefabricated institute's steel member in need is welded, welds connection ring including both ends in factory's blanking by design first
Sectional type outer tube 16 and sectional type inner tube 15, sectional type honeycomb type I-beam and housing monoblock type node.Frame system is owned
It welds connecting link segmentation outer tube 16 and sectional type inner tube 15 and basis realization is affixed, outer tube is higher by basic 0.5m or so, inner tube
It is higher by 0.5m or so than outer tube, convenient for the connection of inner and outer pipes, while ensuring that inner and outer pipes link position is staggered, is then poured into interlayer
Build high-strength concrete 19.High-strength concrete 19 leads to 15 lower part of sectional type inner tube that both ends weld connection ring after reaching some strength
It crosses connection ring to connect with the coupled column inner tube being integrally above the ground level, both ends is then welded to the sectional type outer tube 16 of connection ring again
Lower part is connected by connection ring with the coupled column outer tube being integrally above the ground level, it is ensured that inner tube is consistently higher than outer tube, and in beam
High 3 a distance of egress of inner tube, reaches pre-designed height at Column border node.It is combined to all sectional type hollow concretes
After column connects, high-strength concrete 19 is poured in inner and outer pipes interlayer, forms hollow tube concrete combination column.It is whole that housing is installed
Formula node realized by the lower connection ring 5 of node 3 and bottom column outer tube and is reliably connected, by high-strength bolt by sectional type honeycomb
Type beam is connected with housing monoblock type node, carries out welding appropriate to junction after connection, while being installed other frames
Node and beam, then to casting concrete at the inner and outer pipes interlayer of node 3, maintenance forms bottom combo box after reaching some strength
Frame system.Then the construction second layer to top layer, this construction method is known as conventional construction method from bottom to top successively.This construction
The all prefabrications of the steel member of method, greatly reduce labour, shorten construction period, poured in place concrete, frame
Good integrity, overall cost are lower.Beam-ends weakening type can be used in sectional type honeycomb type I-beam in this kind of construction method, can also
To be connected using the disconnectable edge of a wing with the dissipative links block that web weakens.
Embodiment 2:
The frame system that this hollow steel tube concrete integral node is constituted is connected by coupled column 1 and combination beam 2 by node 3
Composition is connect, combination beam 2 is horizontally set between coupled column 1, and node 3 is the housing monoblock type node of inner-concrete with high intensity 19；
Housing monoblock type node includes the node outer tube 6 with upper connection ring 4 and lower connection ring 5, in upper connection ring 4 and lower connection ring 5
It is equipped with bolt hole 12, upper enforced loop plane 7 is arranged at 6 top of node outer tube, and lower enforced loop plane 8, upper 7 horizontal direction of enforced loop plane are arranged at lower part
The top flange 9 for the I-shaped end carriage that inner cavity communicates is extended to form outside, and lower enforced loop plane 8 extends to form what inner cavity communicated horizontally outward
The lower flange 13 of I-shaped end carriage is node web 11, I-shaped end carriage between the top flange 9 of I-shaped end carriage, lower flange 13
End connected by node connecting plate, node connecting plate be arranged bolt hole 12；Coupled column 1 is sectional type hollow tube coagulation local soil type
Zygostyle, combination beam 2 are sectional type external prestressing honeycomb type I-beam, sectional type external prestressing honeycomb type I-beam both ends
Side is respectively provided with beam connecting plate 14, and the lower end of beam connecting plate 14 has beam dart, bolt hole 12, beam is arranged on beam connecting plate 14
It is also provided with presstressed reinforcing steel hole 18 on dart, passes through beam dart stretch-draw anchor presstressed reinforcing steel 22；Node 3 by upper connection ring 4,
Lower connection ring 5 is fixedly connected with coupled column 1, and in conjunction with shown in Figure 10, Figure 11, node 3 is cut by node connecting plate and combination beam 2
Weak section 21 connection；Weaken section 21 be it is dismountable, weaken section 21 with arc groove, the both ends of weakening section 21 are provided with weakening section
Connecting plate 25 weakens section 21 and is connect by one end weakening section connecting plate 25 with combination beam 2, weakens section 21 and weaken section by the other end
Connecting plate 25 is connect with node end carriage.Weaken section 21 and also referred to as weakens dissipative links block.
The construction method for the frame system that this hollow steel tube concrete integral node is constituted:
Prefabricated institute's steel member in need is welded, welds connection ring including both ends in factory's blanking by design first
Sectional type outer tube 16 and sectional type inner tube 15, both ends weld the sectional type honeycomb type I-beam and housing monoblock type section of lower prominent steel plate
Point.By frame system it is all weld connecting link segmentation outer tube 16 and sectional type inner tube 15 and basis realize it is affixed, outer tube is higher by
Basic 0.5m or so, inner tube is higher by 0.5m or so than outer tube, convenient for the connection of inner and outer pipes, while ensuring that inner and outer pipes link position is wrong
It opens, high-strength concrete 19 is then poured into interlayer.High-strength concrete 19, which reaches, welds connection ring for both ends after some strength
15 lower part of sectional type inner tube is connected by connection ring with the coupled column inner tube being integrally above the ground level, and both ends are then welded company again
16 lower part of sectional type outer tube for connecing ring is connected by connection ring with the coupled column outer tube being integrally above the ground level, it is ensured that inner tube is always
Higher than outer tube, and high 3 a distance of egress of inner tube at node 3, reach pre-designed height.To all sectional types
After hollow concrete coupled column connects, high-strength concrete 19 is poured in inner and outer pipes interlayer, forms hollow tube Combined concrete
Column.Monoblock type node is installed, is realized and is reliably connected by the lower connection ring 5 of node 3 and bottom column, by high-strength bolt by segment
Formula honeycomb type I-beam is connected with housing monoblock type node, is carried out welding appropriate to junction after connection, is installed successively
At other frame joints and beam, then to casting concrete at the inner and outer pipes interlayer of node 3, maintenance is formed after reaching some strength
Bottom group frame system.Then the connection of two layers of steel member is equally completed with bottom.In bottom-layer beam and node point connection
No-cohesive prestressed reinforcement is arranged in dart, and tensioning is carried out to the deformed bar in beam, reaches control stress for prestressing, is formed
Bottom prestressing combination frame system.Then successively the construction second layer to top layer, it is ensured that fill up concrete in column and node 3, and
Guarantee the connectivity of column and 3 concrete of node.To ensure that this layer of steel construction has reliably connected in tensioning lower layer deformed bar
It connects and lower level node concrete reaches some strength, avoid system that biggish deformation occurs during prestressed reinforcement of tensioning.
This construction method is known as dropping a stretching method, and all prefabrications of the steel member of this construction method greatly reduce labour,
Shorten construction period, poured in place concrete, whole connectivity is good.Both ends weld the section of lower prominent steel plate in this kind of construction method
Beam-ends weakening type can be used in segmentation honeycomb type I-beam, the dissipative links block that can also be weakened using the disconnectable edge of a wing and web
Connection, presstressed reinforcing steel 22 can be linear, can also be and form broken line or shaped form by steering block.
The frame system that this hollow steel tube concrete integral node is constituted can also use following construction method:
Prefabricated institute's steel member in need is welded, welds connection ring including both ends in factory's blanking by design first
Sectional type outer tube 16 and sectional type inner tube 15, both ends weld the sectional type honeycomb type I-beam and housing monoblock type section of lower prominent steel plate
Point.All sectional type outer tubes 16 for welding connection ring of frame system and sectional type inner tube 15 are realized into affixed, outer tube height with basis
Basis 0.5m or so out, inner tube is higher by 0.5m or so than outer tube, convenient for the connection of inner and outer pipes, while ensuring inner and outer pipes link position
It is staggered, high-strength concrete 19 is then poured into interlayer.High-strength concrete 19, which reaches, welds connection ring for both ends after some strength
15 lower part of sectional type inner tube connected with the coupled column inner tube being integrally above the ground level by connection ring, then both ends are welded again
16 lower part of sectional type outer tube of connection ring is connected by connection ring with the coupled column outer tube being integrally above the ground level, it is ensured that inner tube begins
It is higher than outer tube, and high 3 a distance of egress of inner tube at node 3 eventually, reaches pre-designed height.To all segments
After formula hollow concrete coupled column connects, high-strength concrete 19 is poured in inner and outer pipes interlayer, forms hollow tube coagulation local soil type
Zygostyle.Housing monoblock type node is installed, is reliably connected by the lower connection ring 5 and bottom column realization of node 3, passes through high-strength bolt
Sectional type honeycomb type I-beam is connected with monoblock type node, welding appropriate is carried out to junction after connection, is installed successively
Other frame joints and beam are completed, then to casting concrete at the inner and outer pipes interlayer of node 3, maintenance reaches shape after some strength
At bottom group frame system.Then the connection of two layers of steel member is equally completed with bottom.Then casting concrete is to two layers
Capital, it is ensured that fill up concrete in column and node 3, and guarantee the connectivity of column and node concrete, maintenance reaches some strength
Afterwards, the casting concrete into two node layers.Then construction third layer is to top layer successively, and to all floors, all construction is finished,
No-cohesive prestressed reinforcement is arranged in the dart of 3 junction of bottom-layer beam and node, bottom-up successively disposable tensioning is complete every
The presstressed reinforcing steel 22 of layer realizes reliable anchoring, the pre-stress construction of general frame is completed, after this construction method is known as first entirety
Stretching method.Advantage is that frame forms post-stress muscle 22, as conventional prestressed concrete frame, it is ensured that whole
Stress.And frame system successively can uninterruptedly construct, and presstressed reinforcing steel 22 can realize concentration tensioning, prestressing technique personnel on site
The tensioning time is short, and overall cost is low.The sectional type honeycomb type I-beam that both ends weld lower prominent steel plate in this kind of construction method can be adopted
It with beam-ends weakening type, can also be connected using the disconnectable edge of a wing with the dissipative links block that web weakens, presstressed reinforcing steel 22 can be with
Be it is linear, can also be and broken line or shaped form are formed by steering block.
Claims (10)
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| CN108166629A (en) * | 2018-01-15 | 2018-06-15 | 福州大学 | A kind of detachable assembling type steel core concrete column-connected mode and its construction method |
| CN109339251B (en) * | 2018-11-21 | 2023-11-03 | 福建工程学院 | Conversion node structure of combined column and construction method thereof |
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| CN106869326A (en) | 2017-06-20 |
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