CN106522382A - Fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint - Google Patents
Fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint Download PDFInfo
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- CN106522382A CN106522382A CN201610994494.9A CN201610994494A CN106522382A CN 106522382 A CN106522382 A CN 106522382A CN 201610994494 A CN201610994494 A CN 201610994494A CN 106522382 A CN106522382 A CN 106522382A
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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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
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Environmental & Geological Engineering (AREA)
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- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a fabricated concrete-filled steel tube column-H type steel beam self-resetting energy consumption connection joint. The connection joint comprises a concrete-filled steel tube column, an H type steel beam, an energy consumption part and a connection part. The connecting end of the H type steel beam is a bevel edge, the connecting end and the concrete-filled steel tube column are hinged, a wedge-shaped space is formed between the connecting end of the H type steel beam and the side wall of the concrete-filled steel tube column, and then the joint only rotates around the top flange of the H type steel beam. The energy consumption part is arranged between the bottom flange of the H type steel beam and the concrete-filled steel tube column, and the connection part is arranged between the H type steel beam and the concrete-filled steel tube column. The structure is simple, fabrication can be achieved in the construction process, cost is remarkably reduced, good earthquake prevention and disaster reduction and self-resetting effects can be achieved at the same time, and the connection joint can be widely applied to the technical field of energy dissipation and shock absorption of high-rise and super high-rise buildings.
Description
Technical field
The invention belongs to construction structure shockproof mitigation technical field, is related to a kind of Self-resetting bean column node form, specifically relates to
And a kind of assembly concrete-filled steel tube post and H profile steel beam Self-resetting power consumption connecting node.
Background technology
Runback bit architecture is a kind of to reduce new structure of the residual deformation as target after building structure shake, the system
Can effective control structure maximum distortion, the residual deformation of structure can be decreased or even eliminated again, enable building structure fast after shake
Quick-recovery uses function, realizes the aseismic fortification objects of " middle shake can be repaiied ".
The bean column node rotated using upper lower flange of lingering more than existing runback bit architecture.The meeting in rotation process of such node
Cause " beam growth " phenomenon, so as to have a negative impact to floor.Additionally, existing Self-resetting bean column node needs scene to apply in advance should
Power, difficulty of construction are big, and are difficult to ensure that prestress application quality.Therefore, to avoiding in bean column node rotation process to floor band
Carry out adverse effect, be easy to ensure that prestress application quality and the Self-resetting bean column node of easy construction need further to study and open
Send out.
The content of the invention
In order to overcome the defect of prior art, i.e., the residual deformation after structure shake is eliminated enables building structure fast after shake
Quick-recovery is using on the premise of function, it is ensured that the accurate applying of runback bit architecture structural initial pre stress, it is to avoid bean column node was rotated
Adverse effect in journey to floor, it is an object of the invention to：Propose a kind of assembly concrete-filled steel tube post-H profile steel beam runback
Position power consumption connecting node, the present invention are employed the following technical solutions and are achieved：
A kind of assembly concrete-filled steel tube post-H profile steel beam Self-resetting power consumption connecting node, including steel core concrete column, H types
Girder steel, energy-consuming parts and connection member；H profile steel beam connection end is hypotenuse, and the connection end passes through the company of being hinged with steel core concrete column
Connect, between the connection end of H profile steel beam and steel core concrete column side wall, form wedge shape space, the lower flange of H profile steel beam connection end is remote
Energy-consuming parts, H profile steel beam and steel pipe are provided between steel core concrete column, the lower flange of H profile steel beam and steel core concrete column
Connection member is provided between concrete column.
Two connecting plates (3) are fixedly installed on the side wall of steel core concrete column, two connecting plates are located at H profile steel respectively
The web both sides of beam hinged end, while two connecting plates also are located at the both sides of wedge shape space, pass through spiral shell between connecting plate and web
Tether and connect.
Connection member includes anchor plate and prestress wire, arranges between the top flange and lower flange of H profile steel beam
Have two anchor plates, two anchor plates respectively positioned at the both sides of web, and it is vertical with top flange, lower flange and web be connected,
Prestress wire is provided between H profile steel beam and steel core concrete column, prestress wire one end is by anchorage and anchoring
Plate connects, and the other end is anchored on the side wall of concrete column horizontal through the conduit pre-set in steel core concrete column.
Energy-consuming parts include L-type Wasted-energy steel plate and T-shaped cover plate, set between the lower flange of H profile steel beam and steel core concrete column
L-type Wasted-energy steel plate is equipped with, the lower surface of L-type Wasted-energy steel plate is provided with T-shaped cover plate, L-type Wasted-energy steel plate and steel core concrete column
Between fixed by punching bolt.
Backing plate is being provided with prestress wire anchoring on the wall of steel core concrete column side.
The upper surface of beam top flange hinged end is provided with reinforcing plate.
Anchor plate is provided with one group of ribbed stiffener；The one group of ribbed stiffener stated is no less than three.
Above-mentioned technical proposal compared with traditional Self-resetting node, with advantages below：
1st, the assembly concrete-filled steel tube post-H profile steel beam Self-resetting power consumption connecting node provided using the present invention, is different from
The bean column node rotated using upper lower flange of lingering more than existing runback bit architecture, the node that the present invention is provided is only on H profile steel beam
The edge of a wing rotates, and makes floor remain horizontality, during earthquake, can be prevented effectively from beam column and rotate the unfavorable shadow produced to floor
Ring；L-type Wasted-energy steel plate can surrender power consumption during joint rotation simultaneously, so as to ensure agent structure in seismic process all the time
In elastic stage, the self-resetting capability provided by prestress wire after shake makes structure return to original state.
2nd, the present invention can be prefabricated in the factory, it is ensured that the accurate applying of steel strand wires structural initial pre stress；During site operation, directly will
Prefabricated steel core concrete column-H type beams Self-resetting power consumption connecting node is connected with other components, welding work
Make, can significantly shorten construction period and labor cost, realize fabricated construction, meet building trade future developing trend.
Description of the drawings
Fig. 1 is node overall schematic of the present invention；
Fig. 2 is node schematic diagram of the present invention；
Fig. 3 is node H profile steel beam generalized section 1-1 of the present invention；
Fig. 4 is generalized section 2-2 on the outside of node post jamb of the present invention；
Fig. 5 is load-displacement curve figure；
Post jamb Stress Map when Fig. 6 is 2% story drift：
Vierendeel girder Stress Map when Fig. 7 is 2% story drift；
Steel strand wires Stress Map when Fig. 8 is 2% story drift；
L-type Wasted-energy steel plate Stress Map when Fig. 9 is 2% story drift；
Structural representations of the Figure 10 for H profile steel beam；
Figure 11 is the schematic diagram of L-type Wasted-energy steel plate and T-shaped cover plate；
In figure, each symbol is represented：1st, steel core concrete column；2nd, H profile steel beam；3rd, connecting plate；4th, bolt；5th, prestress steel twist
Line；6th, anchorage；7th, backing plate；8th, L-type Wasted-energy steel plate；9th, T-shaped cover plate；10th, anchor plate；11st, reinforcing plate；12nd, ribbed stiffener；13rd, lead
Pipe；14th, punching bolt；15th, horizontal loading；16th, face outer support；17th, it is hinged constraint.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment 1
Such as Fig. 1, a kind of assembly concrete-filled steel tube post-H profile steel beam Self-resetting power consumption connecting node, including concrete filled steel tube
Post 1, H profile steel beam 2, energy-consuming parts and connection member；2 connection end of H profile steel beam is hypotenuse, the connection end and steel core concrete column 1
By being articulated and connected, a wedge shape space, H profile steel beam 2 between the 1 side wall of connection end and steel core concrete column of H profile steel beam 2, are formed
The lower flange of connection end is away from steel core concrete column so that connection of the node around the top flange of H profile steel beam 2 and steel core concrete column
Place rotates；Energy-consuming parts, H profile steel beam 2 and concrete filled steel tube are provided between the lower flange of H profile steel beam 2 and steel core concrete column
Connection member is provided between post 1.
The node that the present invention is provided only is rotated around the short girder steel top flange of H types, makes floor remain horizontality, earthquake
When, beam column can be prevented effectively from and rotate the adverse effect produced to floor.
Further, reinforcing plate 11 is set on the outside of the top flange of the short girder steel of H types, reinforcing plate 11 is alignd with girder steel top flange
Welding, on the outside of its lower flange is arranged L-type Wasted-energy steel plate 8, is connected with lower flange of girder edge by high-strength bolt, and another side passes through
Punching bolt 14 is connected with steel core concrete column 1；Arrange T-shaped cover plate 9 to constrain its out-of-plane deformation on the outside of L-type Wasted-energy steel plate 8；T
Type cover plate 9 is connected by high-strength bolt with L-type Wasted-energy steel plate 8 and flange of beam.
L-type Wasted-energy steel plate can surrender power consumption during joint rotation, so as to ensure that agent structure begins in seismic process
Elastic stage is in eventually, it is to avoid the infringement of agent structure.
Further, prestress wire 5 is being arranged symmetrically near lower flange of girder edge inside parallel, by prestress steel after shake
The self-resetting capability that twisted wire is provided makes structure return to original state, and prestress wire 5 carries out tensioning in factory, and its one end is used
Anchorage 6 is anchored on the outside of post jamb, and arranges 8 local strengthening of backing plate in anchored end, and other end anchorage 6 is anchored in H profile steel beam 2
On anchor plate 10, and multiple ribbed stiffeners 12 parallel to flange of beam are welded on anchor plate 10, prevent which from local failure occurring.
Wherein, anchorage of the present invention 6 can select Extruded anchoring tool, strand tapered anchorage, compression joint type anchorage, brace type anchor
Tool and cone plug type anchorage.
Multiple slotted holes are set on connecting plate 3, so as to effective transmission vertical shear and realize that beam-ends lingers top flange rotation；
Steel core concrete column 1 and anchor plate 10 all should arrange hole so that prestress wire 5 is passed through.
Steel core concrete column 1 and H profile steel beam 2 are by prefabrication.Need to be in correspondence position during casting concrete in the steel pipe
Pre-buried conduit 13 in advance, in order to the insertion of prestress wire 5, each part carries out prestress steel after factory installs in advance
The tensioning of twisted wire 5, anchoring.
Embodiment 2：
(1) model is set up
Finite element modelling has been carried out to patent of the present invention using ABAQUS6.10 softwares, individual layer single span model, span has been set up
2100mm, floor height 1200mm, model component size are as shown in table 1：
1 model component size of table
Steel adopt piece-wise elastic-plastic model, yield strength to take fy=345MPa, elastic modulus E=206000MPa strengthen mould
Amount Et=2%E, Poisson's ratio take υ=0.3, using C30 concrete, the elastic modulus E of steel strand wiresPT=195000MPa, tension are strong
Spend for 1865MPa, punching bolt adopts 8.8 grades of high-strength bolts, and yield strength is 800MPa, in simulation process, apply 175kN's
Bolt load (pretightning force).Steel strand prestress is applied by falling temperature method, and circular is：
In formula：ΔtFor the temperature value for needing to apply；ε is the corresponding strain value of steel strand wires；Line expansion systems of the α for steel strand wires
Number, takes 1.2 × 10-5/℃；T0For the prestress value being applied on steel strand wires；EPTFor the elastic modelling quantity of steel strand wires；APTTwist for steel
Line area of section.
Steel select shell unit (S4R), steel strand wires to select bar unit (T3D2), bolt and steel pipe inner concrete from real
Body unit (C3D8R), it is considered to the geometrical non-linearity of component, material nonlinearity and contact nonlinear.Concrete adopts Plastic Damage
Model, its plastic value are as shown in table 2：
2 concrete material plastic of table
Contact relation normal direction between steel pipe and concrete and punching bolt and concrete is defined as contacting firmly, tangentially adopts
Coulomb friction model is used, coefficient of friction is 0.6.Bolt is defined as contacting firmly with the reserved hole face contact relation normal direction of steel plate, tangentially
Using Coulomb friction model, coefficient of friction is 0.3.There is out-of-plane deformation to prevent structure, outside the applying face of Vierendeel girder top flange
Constraint.Steel tube concrete column feet applies displacement load in capital by displacement controlled loading method, takes limiting displacement drift using being hinged
For 2%.FEM model stress and strain model and boundary condition are as shown in Figure 5.
(2) interpretation of result
Framework load-displacement curve is as shown in figure 5, can be obtained by curve, structure residual deformation about 2.4mm, structure is remaining to be become
When shape is within 0.2% story drift, it is believed that meet Self-resetting requirement, the total height of this model is 1200mm, therefore remaining change
When shape is less than or equal to 2.4mm, then it is assumed that structure has self-resetting capability.So, patent of the present invention has self-resetting capability.By scheming
6 and Fig. 7, in 2% story drift, framework beam and column is except going out current situation in top flange correspondence position and steel strand anchoring position
Portion's surrender is outer, and other positions keep elasticity；As seen from Figure 8, when story drift reaches 2%, steel strand wires are still protected
Hold elasticity；From Fig. 9 a and Fig. 9 b, L-type Wasted-energy steel plate weakens substantially all entrance of section and moulds when story drift reaches 2%
Property power consumption.Some proves that the patent of invention has preferable Self-resetting and energy dissipation capacity above, has basically reached design object.
The above-mentioned description to the embodiment of the present invention can help those skilled in the art to understand and using this
It is bright.For those of ordinary skill in the art easily can make embodiment modification according to the actual requirements, it is not required to create
Property work General Principle described herein as can be applied in other embodiment.Therefore, the invention is not restricted to above-described embodiment,
Those skilled in the art's announcement of the invention, the improvement made to the present invention and modification all should be in the protection models of the present invention
Within enclosing.
Claims (7)
1. a kind of assembly concrete-filled steel tube post-H profile steel beam Self-resetting power consumption connecting node, including steel core concrete column (1), H
Section steel beam (2), energy-consuming parts and connection member；Characterized in that, described H profile steel beam (2) connection end is hypotenuse, the connection end
With steel core concrete column (1) by being articulated and connected, formed between the connection end of H profile steel beam (2) and steel core concrete column (1) side wall
Wedge shape space, away from steel core concrete column, lower flange and the steel pipe of H profile steel beam (2) are mixed for the lower flange of H profile steel beam (2) connection end
Energy-consuming parts are provided between solidifying earth pillar, between H profile steel beam (2) and steel core concrete column (1), connection member is provided with.
2. assembly concrete-filled steel tube post as claimed in claim 1-H profile steel beam Self-resetting power consumption connecting node, its feature exist
In, two connecting plates (3) are fixedly installed on the side wall of steel core concrete column, two connecting plates (3) are located at H profile steel beam respectively
(2) the web both sides of hinged end, while two connecting plates also are located at the both sides of wedge shape space, connecting plate (3) leads to and web between
Cross bolt connection.
3. assembly concrete-filled steel tube post as claimed in claim 1-H profile steel beam Self-resetting power consumption connecting node, its feature exist
In described connection member includes anchor plate (10) and prestress wire (5), in the top flange of H profile steel beam (2) and bottom wing
Be provided with two anchor plates (10) between edge, two anchor plates (10) respectively positioned at the both sides of web, and with top flange, lower flange
Vertically connect with web, prestress wire (5) is provided between H profile steel beam (2) and steel core concrete column (1), it is described
Prestress wire (5) one end be connected with anchor plate by anchorage, the other end horizontal through in steel core concrete column (1) in advance
The conduit of setting is anchored on the side wall of concrete column.
4. assembly concrete-filled steel tube post as claimed in claim 1-H profile steel beam Self-resetting power consumption connecting node, its feature exist
In described energy-consuming parts include L-type Wasted-energy steel plate (8) and T-shaped cover plate (9), the lower flange of H profile steel beam (2) and steel tube concrete
L-type Wasted-energy steel plate (8) is provided between earth pillar, the lower surface of L-type Wasted-energy steel plate (8) is provided with T-shaped cover plate (9), L-type power consumption
It is fixed by punching bolt (14) between steel plate (8) and steel core concrete column (1).
5. assembly concrete-filled steel tube post as claimed in claim 1-H profile steel beam Self-resetting power consumption connecting node, its feature exist
In being provided with backing plate (7) at prestress wire anchoring on the wall of steel core concrete column (1) side.
6. assembly concrete-filled steel tube post as claimed in claim 1-H profile steel beam Self-resetting power consumption connecting node, its feature exist
In being provided with reinforcing plate (11) in the upper surface of beam top flange hinged end.
7. assembly concrete-filled steel tube post as claimed in claim 1-H profile steel beam Self-resetting power consumption connecting node, its feature exist
In anchor plate (10) is provided with one group of ribbed stiffener；The one group of ribbed stiffener (12) stated is no less than three.
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| CN107119800A (en) * | 2017-04-09 | 2017-09-01 | 北京工业大学 | A kind of many high-rise assembled modularization Self-resetting steel construction square tube post frame systems |
| CN107165274A (en) * | 2017-04-09 | 2017-09-15 | 北京工业大学 | A kind of many high-rise assembled modularization Self-resetting steel construction H profile steel post frame systems |
| CN107299679A (en) * | 2017-04-09 | 2017-10-27 | 北京工业大学 | A kind of many high-rise assembled modularization Self-resetting steel construction special-shaped column frame systems |
| CN107338873A (en) * | 2017-08-28 | 2017-11-10 | 山东大学 | Unilateral buckling-restrained formula girder steel column connected node and steel building |
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| CN107165274B (en) * | 2017-04-09 | 2019-04-05 | 北京工业大学 | A kind of more high-rise assembled modularization Self-resetting steel construction H profile steel column frame systems |
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