CN207794355U - A kind of coupling beam structure reinforced using X-shaped steel plate - Google Patents
A kind of coupling beam structure reinforced using X-shaped steel plate Download PDFInfo
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- CN207794355U CN207794355U CN201721753666.XU CN201721753666U CN207794355U CN 207794355 U CN207794355 U CN 207794355U CN 201721753666 U CN201721753666 U CN 201721753666U CN 207794355 U CN207794355 U CN 207794355U
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- coupling beam
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- shaped steel
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Abstract
The utility model discloses a kind of coupling beam structure reinforced using X-shaped steel plate, including coupling beam and wall limb, X-shaped steel plate is arranged in the coupling beam, arranges that anchorage element, the X-shaped steel plate are supported by the anchorage element of both sides in wall limb.The utility model forms reinforced concrete combination coupling beam structure using X-shaped steel plate embedment coupling beam, it uses rational steel plate distribution form knot and has closed the advantages of steel plate is with concrete connecting-beam itself, its principle is the moment of flexure and shearing resisted using the steel plate for being distributed as X-shaped shape under load action in coupling beam, effective sectional area can be provided on destroying interface resisting the pulling force of generation, and provide between the crack of diagonally opposing corner parallel direction effective section resist pulling force and between crack the changing of the relative positions shearing.The problems such as this method overcomes traditional coupling beam structural bearing force difference, ductility is low, energy dissipation capacity is poor.And the problem that arrangement of reinforcement complicated, construction inconvenient can be reduced in traditional coupling beam simultaneously.
Description
Technical field
The utility model is related to a kind of designing techniques of coupling beam in high building structure, especially a kind of to use X-shaped steel plate
The design method of the coupling beam structure of reinforcement.
Background technology
Coupling beam is the important connecting elements between shear wall in high building structure, is usually set in dependency structure design
It is calculated as initially entering the component of surrender, play a role as the first line of defence provided fortification against earthquakes.Change of the coupling beam under load action
Shape is as shown in Figure 1.
When coupling beam for span is larger and situation that deck-molding is smaller when, common beam design principle can be used in design principle, this
The destruction of beam is generally also similar with Vierendeel girder, but the coupling beam being present in many cases in coupled shear walls structure is usually span
Smaller deep beam (span-depth radio is less than 3), it is the larger wall limb of rigidity that both sides, which are connected, and shear wall produces under horizontal force action
Raw flexural deformation, the coupling beam both ends being attached thereto generate moment of flexure and shearing；And the moment of flexure of coupling beam in coupling beam direction of both ends on the contrary,
Edge is entirely equal across shearing, and inflection point is located at coupling beam center (as shown in Figure 2), and it is prodigious that this recurvation effect enables coupling beam to generate
It is shear-deformable, it is easy to generate oblique shear crack, be generated under Cyclic Loading and intersect diagonal crack, lead to brittle shear failure.Using
The coupling beam of conventional Reinforcement Design can not effectively improve coupling beam bearing capacity and ductility, also more to the improvement situation of brittle shear failure
Limited, coupling beam is destroyed unexpected in this case, and energy dissipation capacity is low, once the seismic energy that can not effectively dissipate after destroying, unfavorable
In structure entirety antidetonation.
According to existing achievement in research, coupling beam is incident to be destroyed as bending failure by shear and failure by shear, bending cunning
It moves and destroys then less appearance, bending failure by shear all has similar diagonal cross crack with failure by shear, is bent failure by shear
Also plastic hinge can be generated in beam-ends, the loading characteristic of this and this small span-depth ratio coupling beam has substantial connection.These types of failure mode
It is as follows：
1, flexural glide destroys：As shown in Fig. 3 (a), coupling beam is first in the tension with wall limb delivery position after being further applied load
There are the bending cracks perpendicular to coupling beam in side.After load reversal, direct tension cracking is closed, and compressive region becomes tensile region, same section
There is same crack in another tight side in face.With the increase and repeatedly of load, vertical fracture constantly extends, extends, finally
Entire cross-section of coupling beam is run through, coupling beam slides along above-mentioned crack, loses bearing capacity and destroys.The shearing resistance energy of test specimen
Power relies primarily on the dowel action of vertical muscle, does not occur or seldom occur diagonal crack in beam.
2, it is bent failure by shear：As shown in Fig. 3 (b), Moment makes occur bending cracks first in coupling beam end, tiltedly
Crack generated before longitudinal reinforcement reaches surrender, and gradually carried out after the surrender of vertical muscle, and bending cracks are also gradually increased, even
New diagonal crack continuously emerges in the beam soffit of girder, wherein a diagonal crack develops into control critical eigenvalue, coupling beam is intersected when destruction
Crack is divided into many fractions, destroys and is mainly surrendered by the stirrup intersected with control critical eigenvalue, indulges plastic hinge position after muscle surrender
It loses shear resistance and causes.
3, the failure by shear of coupling beam is divided into diagonal tensile failure and diagonal compression damage：As shown in Fig. 3 (c), in stirrup ratio
In smaller coupling beam, coupling beam is divided into two gables by diagonal diagonal crack, and the stirrup intersected with diagonal diagonal crack reaches in the wrong
Diagonal tensile failure occurs for clothes, coupling beam；In the ratio of reinforcement and the larger test specimen of bending resistance ripping circular saw, arching will rise mainly
Effect, concrete compression destroys and loses carrying between diagonal diagonal crack finally occurs under the diagonal effect of baroclining for coupling beam
Power.
Utility model content
To solve the above problem of the existing technology, the utility model will design a kind of small span-depth ratio coupling beam that can improve
Bearing capacity, ductility and energy dissipation capacity, to improve the coupling beam knot of integrally-built anti-seismic performance reinforced using X-shaped steel plate
Structure.
To achieve the goals above, the technical solution of the utility model is as follows：
A kind of coupling beam structure reinforced using X-shaped steel plate, including coupling beam and wall limb arrange X-shaped steel plate in the coupling beam,
Arrange that anchorage element, the X-shaped steel plate are supported and anchored by the anchorage element of both sides in wall limb；The X-shaped steel plate closes
It is symmetrical, symmetrical about vertical center line in horizontal center line；The anchorage element length direction and horizontal plane, both sides
Anchorage element is mutually parallel.
Further, the vertical center line of the X-shaped steel plate is conllinear with the vertical center line of coupling beam.
Further, the X-shaped steel plate passes through solder design with anchorage element.
Further, the anchorage element is I-steel, H profile steel, the double limb angle steel or T-steel being arranged symmetrically.
Further, the size of the size X-shaped steel plate of the X-shaped steel plate along coupling beam short transverse without departing from coupling beam hoop
Muscle range.
Compared with prior art, the utility model has the advantages that：
1, the utility model forms reinforced concrete combination coupling beam structure using X-shaped steel plate embedment coupling beam.This design side
Method uses rational steel plate distribution form knot and has closed the advantages of steel plate is with concrete connecting-beam itself, and principle is to use to divide
Cloth is that the steel plate of X-shaped shape resists the moment of flexure and shearing in coupling beam under load action, and material has for low-intensity used by steel plate
There are the steel of good ductility, steel plate " X " type to be arranged such that the distribution of cross sectional moment of inertia is substantially consistent with the distribution of coupling beam moment of flexure,
The steel plate direction of arranged crosswise and principal direction of stress are very close, and principal compressive stress is by steel plate and concrete shared, and main drawing
Stress is undertaken by steel plate and corresponding stirrup, and concrete can prevent the steel plate compressive buckling unstability in concrete.And base
In the conclusion of some scholars research：Breaking section when diagonal cracking destruction occurs for coupling beam is the intersection point up and down along coupling beam and wall
Diagonal line formed by plane.Therefore using X-shaped shape arrangement steel plate can destroy interface on provide effective sectional area to
Resist the pulling force generated, and provide between the crack of diagonally opposing corner parallel direction effective section resist pulling force with along crack it
Between the changing of the relative positions shearing.Addition due to X-shaped steel plate and effective contribution to coupling beam bearing capacity, can reduce coupling beam to a certain extent
The arrangement of middle reinforcing bar, and steel plate is flat member, will not influence coagulation because of excessively intensive reinforcing bar when disturbing concrete
Native casting pounding quality.By this technological means, the coupling beam that traditional design method designs will be overcome to carry, and force difference, ductility are low, consume energy
The problems such as energy force difference.And this design method can be reduced simultaneously, and arrangement of reinforcement in traditional coupling beam is complicated, inconvenient problem of constructing.
2, the utility model can effectively improve bearing capacity, energy dissipation capacity and the ductility of coupling beam, to make skyscraper knot
Structure has more preferably integrated carrying ability, ductility and energy dissipation capacity so that building structure has when facing earthquake load
Better security performance, to effectively avoid casualties and property loss.
Description of the drawings
Fig. 1 is deformation figure under coupled shear walls load action.
Fig. 2 is coupling beam stress and diagonal diagonal crack schematic diagram.
Fig. 3 is the failure mode schematic diagram of coupling beam.
Fig. 4 is coupling beam dimensional drawing.
Fig. 5 is the Section A-A figure of Fig. 4.
Fig. 6 is coupling beam structure and scale diagrams.
Fig. 7 is the Section A-A figure of Fig. 6.
Fig. 8 is the section B-B figure of Fig. 6.
Fig. 9 is the C-C sectional views of Fig. 6.
Figure 10 is X-shaped steel plate schematic diagram.
Figure 11 is one of anchorage element and X-shaped steel plate connection diagram.
Figure 12 is the two of anchorage element and X-shaped steel plate connection diagram.
Figure 13 is the three of anchorage element and X-shaped steel plate connection diagram.
In figure：1, X-shaped steel plate；2, coupling beam；3, wall limb；4, anchorage element, 5, weld seam.
Specific implementation mode
The utility model is further described through below in conjunction with the accompanying drawings.As shown in figs. 4 through 10, a kind of to use X-shaped steel plate
The coupling beam structure of reinforcement, including coupling beam 2 and wall limb 3, arrangement X-shaped steel plate 1 in the coupling beam 2 arrange anchorage element in wall limb 3
4, the X-shaped steel plate 1 is supported and is anchored by the anchorage element 4 of both sides；The X-shaped steel plate 1 is about horizontal center line pair
Claim, is symmetrical about vertical center line；The anchorage element 4 of 4 length direction of anchorage element and horizontal plane, both sides is mutual
It is parallel.
Further, the vertical center line of the X-shaped steel plate 1 is conllinear with the vertical center line of coupling beam 2.
Further, the X-shaped steel plate 1 is connect with anchorage element 4 by weld seam 5.
Further, the anchorage element 4 is I-steel, H profile steel, the double limb angle steel or T-steel being arranged symmetrically.
Further, the size of the X-shaped steel plate 1 along 2 short transverse of coupling beam without departing from coupling beam stirrup range.
As shown in Fig. 4-13, the design method of the utility model includes the following steps：
A, design X-shaped steel plate 1
A1, X-shaped steel plate 1 are one layer, are placed centrally in 2 center of coupling beam；X-shaped steel plate 1 is symmetrical about horizontal center line, about
Vertical center line is symmetrical, and the cross-sectional area of 2 span centre arbitrary cross section light plate of coupling beam is equal, and thickness and size are by coupling beam 2
Size needed for the bearing capacity of detailing requiments and the coupling beam 2 require to determine, steel plate sectional dimension computational methods are as follows；
2 born shear V of coupling beam, moment M consist of two parts respectively：The shear V that 1 part of X-shaped steel plate is undertakensp, it is curved
Square Msp, 2 part of reinforced concrete coupling beams undertakes shear Vsc, moment Msc。
I.e.：
V=Vsp+Vsc
M=Msp+Msc
By the sectional dimension t of the above various determining X-shaped steel plate 1spAnd hsp1, wherein：
γRE- Seismic Bearing Capacity regulation coefficient；
h02 effective depth of section of-coupling beam；
as- tension reinforcement point of resultant force is to cross section under tension Edge Distance；
fy- Steel Bar Tensile Strength design value；
AsLongitudinal tensile area of reinforcement in-coupling beam 2；
ft- concrete tensile strength design value；
AvThe gross section area of-configuration each limb of stirrup in same section；
fyvThe tensile strength design value of stirrup in-coupling beam 2；
τsp1 shearing strength design value of-X-shaped steel plate；
σsp- least favorable section, that is, wall beam intersection section is by curved maximum (normal) stress value；
Wsp- least favorable section, that is, wall beam intersection section steel plate section resistance moment；
fsp1 compression strength design value of-X-shaped steel plate；
The angle α of 1 both sides of X-shaped steel plate is simultaneously by 2 geometric dimension of coupling beam and least favorable section resistance moment WspConstraint, that is, press from both sides
The size that angle α had not only met X-shaped steel plate 1 is restricted within stirrup, but also meets least favorable section resistance moment WspMore than smallest cross-sectional
The requirement of resistance moment；
A2, X-shaped steel plate 1 material be carbon structural steels that the trade mark is Q235-B.C.D grades；
A3,1 surface soldered shear stud of X-shaped steel plate, the arrangement of the peg meet JGJ138-2001《Steel reinforced concrete group
Close structure technology regulation》And GB50017-2003《Code for design of steel structures》Regulation；
A4, X-shaped steel plate 1 are located inside 2 stirrup of coupling beam；
B, anchorage element 4 is designed
B1, anchorage element 4 are shaped steel, including I-steel, H profile steel, the double limb angle steel or T-steel being arranged symmetrically, section
Size is determined by following equation：
In formula：M is 2 end moment of flexure of coupling beam, and V shears for 2 end of coupling beam, and A is 4 cross-sectional area of anchorage element, and W is anchoring structure
4 section resistance moment of part, f are 4 steel yield strength design value of anchorage element；
B2, anchorage element 4 select Q345-B.C.D.E grades of low-alloy high-tensile structural steel；
B3, anchorage element 4 are arranged up and down along wall limb 3；If subject to conditions, anchorage element 4 stretches out following table in coupling beam 2
The length h4 in face is not less than 2 height h of coupling beam.
Weld seam 5 between B4, X-shaped steel plate 1 and anchorage element 4 is required to meet GB50017-2003《Code for design of steel structures》
Regulation.
B5,4 surface soldered shear stud of anchorage element, the arrangement of the peg meet JGJ138-2001《Steel reinforced concrete group
Close structure technology regulation》And GB50017-2003《Code for design of steel structures》Regulation.
B6, anchorage element 4 are located inside the distribution bar of wall limb 3 or the stirrup of edge member, the welding of lap position stirrup
In on the anchorage element 4,4 Edge Distance wall limb of anchorage element, 3 Edge Distance da is not less than 80mm.
C, armored concrete is designed
C1, coupling beam 2 span-depth radio be less than 1:3, thickness is more than 150mm；
The selection of C2, Reinforced Concrete Materials meet the requirement of concerned countries specification.
The design of distribution bar meets JGJ3-2010 in C3, coupling beam 2《Technical specification for concrete structures of high-rise building》Want
It asks.
The utility model is not limited to the present embodiment, any equivalent concepts in the technical scope that the utility model discloses
Or change, it is classified as the scope of protection of the utility model.
Claims (5)
1. a kind of coupling beam structure reinforced using X-shaped steel plate, including coupling beam (2) and wall limb (3), it is characterised in that：The company
Arrangement X-shaped steel plate (1) in beam (2), the middle arrangement anchorage element (4) of wall limb (3), the anchoring that the X-shaped steel plate (1) passes through both sides
Component (4) is supported and is anchored；The X-shaped steel plate (1) is symmetrical, symmetrical about vertical center line about horizontal center line；It is described
Anchorage element (4) length direction and horizontal plane, the anchorage element (4) of both sides is mutually parallel.
2. a kind of coupling beam structure reinforced using X-shaped steel plate according to claim 1, it is characterised in that：The X-shaped steel
The vertical center line of plate (1) is conllinear with the vertical center line of coupling beam (2).
3. a kind of coupling beam structure reinforced using X-shaped steel plate according to claim 1, it is characterised in that：The X-shaped steel
Plate (1) is connect with anchorage element (4) by weld seam (5).
4. a kind of coupling beam structure reinforced using X-shaped steel plate according to claim 1, it is characterised in that：The anchoring
Component (4) is I-steel, H profile steel, the double limb angle steel or T-steel being arranged symmetrically.
5. a kind of coupling beam structure reinforced using X-shaped steel plate according to claim 1, it is characterised in that：The X-shaped steel
The size of plate (1) along coupling beam (2) short transverse without departing from coupling beam stirrup range.
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| CN201721753666.XU CN207794355U (en) | 2017-12-15 | 2017-12-15 | A kind of coupling beam structure reinforced using X-shaped steel plate |
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| CN201721753666.XU CN207794355U (en) | 2017-12-15 | 2017-12-15 | A kind of coupling beam structure reinforced using X-shaped steel plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829505A (en) * | 2017-12-15 | 2018-03-23 | 大连大学 | A kind of coupling beam structure and its design method strengthened using X-shaped steel plate |
| CN110879177A (en) * | 2018-09-06 | 2020-03-13 | 水利部交通运输部国家能源局南京水利科学研究院 | Test piece sealing and reinforcing device in concrete hydraulic fracture test |
| CN112963002A (en) * | 2021-02-08 | 2021-06-15 | 华北水利水电大学 | Method for cutting, removing weight and reinforcing existing beam connecting part and reinforcing structure |
| CN115198786A (en) * | 2022-07-05 | 2022-10-18 | 广州建筑工程监理有限公司 | H-shaped reinforced concrete tower crane beam foundation borne by main body structure and reinforcing method |
-
2017
- 2017-12-15 CN CN201721753666.XU patent/CN207794355U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829505A (en) * | 2017-12-15 | 2018-03-23 | 大连大学 | A kind of coupling beam structure and its design method strengthened using X-shaped steel plate |
| CN110879177A (en) * | 2018-09-06 | 2020-03-13 | 水利部交通运输部国家能源局南京水利科学研究院 | Test piece sealing and reinforcing device in concrete hydraulic fracture test |
| CN110879177B (en) * | 2018-09-06 | 2022-03-04 | 水利部交通运输部国家能源局南京水利科学研究院 | Test piece sealing and reinforcing device in concrete hydraulic fracture test |
| CN112963002A (en) * | 2021-02-08 | 2021-06-15 | 华北水利水电大学 | Method for cutting, removing weight and reinforcing existing beam connecting part and reinforcing structure |
| CN112963002B (en) * | 2021-02-08 | 2022-10-18 | 华北水利水电大学 | Method for cutting, removing weight and reinforcing existing beam connecting part and reinforcing structure |
| CN115198786A (en) * | 2022-07-05 | 2022-10-18 | 广州建筑工程监理有限公司 | H-shaped reinforced concrete tower crane beam foundation borne by main body structure and reinforcing method |
| CN115198786B (en) * | 2022-07-05 | 2024-05-07 | 广州建筑工程监理有限公司 | H-shaped reinforced concrete tower crane beam foundation borne by main body structure and reinforcing method |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20191215 |
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