CN108972851A - A kind of doubly-linked beam and preparation method thereof of structure enhancing - Google Patents

A kind of doubly-linked beam and preparation method thereof of structure enhancing Download PDF

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Publication number
CN108972851A
CN108972851A CN201810748931.8A CN201810748931A CN108972851A CN 108972851 A CN108972851 A CN 108972851A CN 201810748931 A CN201810748931 A CN 201810748931A CN 108972851 A CN108972851 A CN 108972851A
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CN
China
Prior art keywords
coupling
linked
doubly
enhancing
limb
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810748931.8A
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Chinese (zh)
Inventor
田建勃
申丹丹
简政
刘云贺
卢俊龙
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Xian University of Technology
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Xian University of Technology
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Publication date
Application filed by Xian University of Technology filed Critical Xian University of Technology
Priority to CN201810748931.8A priority Critical patent/CN108972851A/en
Publication of CN108972851A publication Critical patent/CN108972851A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022Means for inserting reinforcing members into the mould or for supporting them in the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245Curing concrete articles
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground

Abstract

The invention discloses a kind of doubly-linked beams of structure enhancing, including doubly-linked beam ontology, doubly-linked beam ontology both ends are fixedly connected in wall limb and are linked to be an entirety with wall limb, doubly-linked beam ontology there are two be parallel to each other and upper coupling beam set up and down and lower coupling beam composition, the both ends of upper coupling beam and lower coupling beam are fixedly connected in wall limb and are linked to be an entirety with wall limb, steel plate is embedded in upper coupling beam and lower coupling beam, the length direction in the span direction and steel plate of upper coupling beam and lower coupling beam is consistent, and the outer surface of upper coupling beam and lower coupling beam is also enclosed with FRP cloth.A kind of doubly-linked beam of structure enhancing of the invention solves problem existing in the prior art in span-depth radio λ≤1.5, the shear-carrying capacity of single coupling beam and common doubly-linked beam is insufficient and ductility is poor.The invention also discloses the production methods of above-mentioned doubly-linked beam.

Description

A kind of doubly-linked beam and preparation method thereof of structure enhancing
Technical field
The invention belongs to technical field of civil engineering, are related to a kind of doubly-linked beam of structure enhancing, the invention also discloses upper The production method for stating doubly-linked beam.
Background technique
When an earthquake occurs, influence of the generated seismic force to main structure is very big, and this requires in design When want the shock resistance of reinforcement structure.For high-level structure, coupling beam and shear wall are extremely important in whole system Antidetonation position, and coupling beam primarily serves the effect of protection shear wall as first of defence line of providing fortification against earthquakes, to the ability of its antidetonation Requirement be very high, therefore many engineers propose the coupling beam of various structure types.
For traditional single coupling beam, due to the feature that its span is small, sectional dimension is big, so that single coupling beam is rigid Degree is big, and can generate biggish shearing in the event of an earthquake causes coupling beam by failure by shear, and arrangement of reinforcement difficulty be easy to happen it is super Muscle phenomenon.In order to solve the problems, such as that shear resistance difference and overreinforced, the existing technology of single coupling beam propose doubly-linked beam, doubly-linked beam is Finger opens a horizontal straight joint to form two beams that can be worked together jointly, by increasing coupling beam in the middle part of single coupling beam Span-depth radio improves the anti-seismic performance of coupling beam, although the ductility of doubly-linked beam increases, anti-seismic performance also increases, smaller Span-depth radio (λ≤1.5) under, shear-carrying capacity still will appear insufficient situation, cause component ductility and energy dissipation capacity compared with Brittle break still can occur for difference.
Summary of the invention
The object of the present invention is to provide a kind of doubly-linked beams of structure enhancing, solve existing in the prior art in span-depth radio When λ≤1.5, single coupling beam of ordinary reinforced concrete and the problem that the shear-carrying capacity of doubly-linked beam is insufficient and ductility is poor.
It is a further object of the present invention to provide the production methods of above-mentioned doubly-linked beam.
The first technical solution of the present invention is a kind of doubly-linked beam of structure enhancing, including doubly-linked beam ontology, double Coupling beam ontology both ends are fixedly connected in wall limb and are linked to be an entirety with wall limb, and there are two be parallel to each other and be in doubly-linked beam ontology The both ends of upper coupling beam setting up and down and lower coupling beam composition, upper coupling beam and lower coupling beam are fixedly connected in wall limb and connect with wall limb At an entirety, steel plate, the length side in the span direction and steel plate of upper coupling beam and lower coupling beam are embedded in upper coupling beam and lower coupling beam To being consistent, the outer surface of upper coupling beam and lower coupling beam is also enclosed with FRP cloth.
The first of the invention technical solution is further characterized in that,
The tow sides of steel plate are also welded with peg.
The number and arrangement form of the peg of the tow sides of upper coupling beam and the embedded steel plate in lower coupling beam welding are all the same.
Upper coupling beam is identical with the sectional dimension of lower coupling beam and the span of upper coupling beam and lower coupling beam is also identical.
Upper coupling beam is identical with the size of the embedded steel plate in lower coupling beam.
The length that steel plate is embedded in upper coupling beam and lower coupling beam is greater than the span of upper coupling beam and lower coupling beam, and steel plate stretches out upper coupling beam With being partially embedded in wall limb for lower coupling beam.
FRP cloth is bonded in the outer surface of coupling beam and lower coupling beam using binder.
The outer surface of upper coupling beam and lower coupling beam is enclosed with multilayer FRP cloth, and the outer surface of upper coupling beam and lower coupling beam is wrapped up FRP cloth the number of plies it is identical.
Second of technical solution of the present invention is a kind of production method of the doubly-linked beam of structure enhancing, production The structure of doubly-linked beam out is as above, is specifically implemented according to the following steps:
Step 1 overlaps the framework of steel reinforcement of doubly-linked beam ontology and the framework of steel reinforcement of wall limb, then by detailing requiments in steel plate Upper weld stud;
Two steel plates for being welded with peg are inserted respectively into the upper coupling beam of doubly-linked beam ontology and the reinforcing bar of lower coupling beam by step 2 It fixes and assembles in skeleton, form assembled framework of steel reinforcement;
Step 3 builds template, and then the assembled framework of steel reinforcement of step 2 is put into template and is fixed, is then mixed Solidifying soil pours;
Step 4, after maintenance 25-30 days, then demoulding, then to the concrete outer surface that upper coupling beam and lower coupling beam have poured Carry out feather plucking processing;
Step 5 smears bonding agent in the concrete outer surface of the upper coupling beam and lower coupling beam handled through step 4 feather plucking, so FRP cloth is wrapped in the surface of coupling beam afterwards, after waiting bonding agents to parch.
FRP of the invention refers to fibre reinforced composites.
The invention has the advantages that the doubly-linked beam that a kind of structure of the invention enhances, applied to span-depth radio λ≤1.5 Doubly-linked beam, structure is simple, reliable performance, and installation is convenient;When encountering small shake, which can be good at consumption ground Brisance makes structure not occur significantly to destroy;When encountering big shake, coupling beam can give full play to its energy consumption effect, prior to cutting Power wall destroys and occurs to be bending failure, and brittle break will not occur, therefore reduces the extent of the destruction of shear wall in this way, will Loss is minimized.The present invention solves the shearing resistance carrying of the single coupling beam and doubly-linked beam of ordinary reinforced concrete under small span-depth ratio The problem that power is insufficient and ductility is poor, is effectively reduced the shearing and moment of flexure that coupling beam is born, and prevents component from brittleness occurs broken It is bad, further improve the ductility and intensity of coupling beam.
Detailed description of the invention
Fig. 1 is a kind of front elevation view of the doubly-linked beam of structure enhancing of the present invention;
Fig. 2 is the A-A cross-sectional view of Fig. 1.
In figure, 1. doubly-linked beam ontologies, 2. steel plates, 3. pegs, 4.FRP cloth, 5. wall limbs;
The upper coupling beam of 1-1., coupling beam under 1-2..
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The doubly-linked beam of a kind of structure enhancing of the invention, as shown in Figure 1, including doubly-linked beam ontology 1,1 liang of doubly-linked beam ontology End is fixedly connected in wall limb 5 and is linked to be an entirety with wall limb 5, and there are two be parallel to each other and present to divide into for doubly-linked beam ontology 1 The both ends of the upper coupling beam 1-1 set and lower coupling beam 1-2 composition, upper coupling beam 1-1 and lower coupling beam 1-2 are fixedly connected in wall limb 5 simultaneously It is linked to be an entirety with wall limb 5, upper coupling beam 1-1 and lower coupling beam 1-2 are embedded with steel plate 2, and upper coupling beam 1-1 and lower coupling beam 1-2's is outer Surface is also enclosed with FRP cloth 4, span-depth radio λ≤1.5 of upper coupling beam 1-1 and lower coupling beam 1-2, upper coupling beam 1-1 and lower coupling beam 1-2's Span direction and the length direction of steel plate 2 are consistent.
The tow sides of steel plate 2 are also welded with peg 3, as shown in Fig. 2, steel plate 2 is embedded in upper coupling beam 1-1 and lower coupling beam respectively The middle of 1-2, the thickness direction of steel plate 2 and the thickness direction of upper coupling beam 1-1 and lower coupling beam 1-2 are consistent, the axis of peg 3 To vertical with the thickness direction of steel plate 2, the peg 3 on two faces of same steel plate 2 is symmetrical set.
The number and arrangement shape of the peg 3 of the tow sides of upper coupling beam 1-1 and the embedded steel plate 2 in lower coupling beam 1-2 welding Formula is all the same.
Upper coupling beam 1-1 is identical with the sectional dimension of lower coupling beam 1-2 and the span of upper coupling beam 1-1 and lower coupling beam 1-2 is also identical.
The size of embedded steel plate 2 in upper coupling beam 1-1 and lower coupling beam 1-2 is identical.
The length that steel plate 2 is embedded in upper coupling beam 1-1 and lower coupling beam 1-2 is greater than the span of upper coupling beam 1-1 and lower coupling beam 1-2, The both ends upper coupling beam 1-1's and lower coupling beam 1-2 of stretching of steel plate 2 is partially embedded in wall limb 5.
FRP cloth 4 is bonded in the outer surface of coupling beam 1-1 and lower coupling beam 1-2 using binder.
The outer surface of upper coupling beam 1-1 and lower coupling beam 1-2 are enclosed with multilayer FRP cloth 4, and upper coupling beam 1-1 and lower coupling beam 1-2 Outer surface package FRP cloth 4 the number of plies it is identical.
Peg 3 is welded on the tow sides of steel plate 2 by the present invention, in order to make steel plate 2 and upper coupling beam 1-1 and lower company The concrete of beam 1-2 can preferably link together co-ordination, which is embedded in the concrete of upper and lower coupling beam respectively Middle part is finally wrapped up in the concrete outer layer of upper and lower coupling beam with FRP cloth 4 respectively, and effect is to play circumferential direction to concrete Effect of contraction to achieve the purpose that reinforce the intensity and ductility of structure, and does not need setting stirrup.
A kind of doubly-linked beam of structure enhancing of the invention follows the steps below production:
First, it is first existing to overlap the framework of steel reinforcement of doubly-linked beam ontology 1 and the framework of steel reinforcement of wall limb 5, then on steel plate 2 Weld stud 3, and peg 3 is arranged by detailing requiments, the purpose of peg is to improve steel plate 2 and upper coupling beam 1-1 and lower coupling beam The ability of the concrete co-ordination of 1-2;Wherein the specification of peg 3 is chosen according to " norm of steel structure ";
Second, two steel plates 2 for being welded with peg 3 are inserted respectively into the upper coupling beam 1-1 and lower coupling beam 1- of doubly-linked beam ontology 1 It fixes and assembles in 2 framework of steel reinforcement, form assembled framework of steel reinforcement;
Third builds template, and assembled framework of steel reinforcement is put into template and is fixed, concreting is then carried out;
4th, then demoulding after a few days is conserved, then carry out at feather plucking to the outer surface of upper coupling beam 1-1 and lower coupling beam 1-2 Reason, it is bonding with concrete surface its purpose is to increase FRP;
5th, bonding agent is smeared in the outer surface of processed upper coupling beam 1-1 and lower coupling beam 1-2, then wraps up FRP cloth On the surface of coupling beam, after waiting bonding agents to parch.

Claims (9)

1. a kind of doubly-linked beam of structure enhancing, which is characterized in that including doubly-linked beam ontology (1), doubly-linked beam ontology (1) both ends are fixed It is connected on wall limb (5) and is linked to be an entirety with wall limb (5), there are two be parallel to each other and present the doubly-linked beam ontology (1) The upper coupling beam (1-1) and lower coupling beam (1-2) of lower setting form, and the both ends of the upper coupling beam (1-1) and lower coupling beam (1-2) are fixed It is connected on wall limb (5) and is linked to be an entirety with wall limb (5), be embedded with steel in the upper coupling beam (1-1) and lower coupling beam (1-2) The length direction of plate (2), the span direction and steel plate (2) of upper coupling beam (1-1) and lower coupling beam (1-2) is consistent, the upper company The outer surface of beam (1-1) and lower coupling beam (1-2) is also enclosed with FRP cloth (4).
2. a kind of doubly-linked beam of structure enhancing according to claim 1, which is characterized in that positive and negative the two of the steel plate (2) Face is also welded with peg (3).
3. a kind of doubly-linked beam of structure enhancing according to claim 2, which is characterized in that the upper coupling beam (1-1) and under The number and arrangement form of the peg (3) of the tow sides welding of the inner embedded steel plate (2) of coupling beam (1-2) are all the same.
4. a kind of doubly-linked beam of structure enhancing according to claim 1, which is characterized in that the upper coupling beam (1-1) and under The sectional dimension of coupling beam (1-2) is identical and the span of upper coupling beam (1-1) and lower coupling beam (1-2) is also identical.
5. a kind of doubly-linked beam of structure enhancing according to claim 1, which is characterized in that the upper coupling beam (1-1) and under The size of the inner embedded steel plate (2) of coupling beam (1-2) is identical.
6. a kind of doubly-linked beam of structure enhancing according to claim 5, which is characterized in that the upper coupling beam (1-1) and under The length of coupling beam (1-2) inner embedded steel plate (2) is greater than the span of upper coupling beam (1-1) and lower coupling beam (1-2), the steel plate (2) Both ends stretch out upper coupling beam (1-1) and lower coupling beam (1-2) to be partially embedded at wall limb (5) interior.
7. a kind of doubly-linked beam of structure enhancing according to claim 1, which is characterized in that the FRP cloth (4) is using bonding Agent is bonded in the outer surface of coupling beam (1-1) and lower coupling beam (1-2).
8. a kind of doubly-linked beam of structure enhancing according to claim 1 or claim 7, which is characterized in that the upper coupling beam (1-1) and The outer surface of lower coupling beam (1-2) is enclosed with multilayer FRP cloth (4), and the appearance of the upper coupling beam (1-1) and lower coupling beam (1-2) The number of plies for the FRP cloth (4) that bread is wrapped up in is identical.
9. a kind of production method of the doubly-linked beam of structure enhancing, which is characterized in that the structure for the doubly-linked beam produced such as right is wanted It asks described in 3, is specifically implemented according to the following steps:
Step 1 overlaps the framework of steel reinforcement of doubly-linked beam ontology (1) and the framework of steel reinforcement of wall limb (5), then by detailing requiments in steel Weld stud (3) on plate (2);
Step 2, by two steel plates (2) for being welded with peg (3) be inserted respectively into doubly-linked beam ontology (1) upper coupling beam (1-1) and under It fixes and assembles in the framework of steel reinforcement of coupling beam (1-1), form assembled framework of steel reinforcement;
Step 3 builds template, and then the assembled framework of steel reinforcement of step 2 is put into template and is fixed, concrete is then carried out It pours;
Step 4, after maintenance 25-30 days, then demoulding, then to the concrete that upper coupling beam (1-1) and lower coupling beam (1-2) have poured Outer surface carries out feather plucking processing;
Step 5 smears bonding in the concrete outer surface of the upper coupling beam (1-1) and lower coupling beam (1-2) handled through step 4 feather plucking FRP cloth (4) is then wrapped in the surface of coupling beam, after waiting bonding agents to parch by agent.
CN201810748931.8A 2018-07-10 2018-07-10 A kind of doubly-linked beam and preparation method thereof of structure enhancing Pending CN108972851A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201474109U (en) * 2009-04-16 2010-05-19 姚攀峰 Prefabricated and cast-in-situ mixed dual binding beams
KR20110041079A (en) * 2009-10-15 2011-04-21 부산대학교 산학협력단 Ductility increasing shear wall system
CN102425267A (en) * 2011-08-26 2012-04-25 中国建筑东北设计研究院有限公司 Perforated steel plate concrete shear wall connecting beam provided with stud
CN202248529U (en) * 2011-08-26 2012-05-30 中国建筑东北设计研究院有限公司 Steel plate concrete shear wall connecting beam bestrewed with toggle pins
CN105569266A (en) * 2016-01-31 2016-05-11 深圳大学 Concrete combined connecting beam
CN106836637A (en) * 2017-01-20 2017-06-13 温州大学 Multiple material pipe binding type steel concrete connecting-beam and its construction method
CN107012986A (en) * 2017-04-13 2017-08-04 深圳市建筑设计研究总院有限公司 Multilayer steel-enclosed concrete members composite coupling beams
CN108104367A (en) * 2017-11-27 2018-06-01 深圳大学 A kind of doubly-linked beam and its construction method
CN208533864U (en) * 2018-07-10 2019-02-22 西安理工大学 A kind of FRP- steel plate and concrete composite doubly-linked beam

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201474109U (en) * 2009-04-16 2010-05-19 姚攀峰 Prefabricated and cast-in-situ mixed dual binding beams
KR20110041079A (en) * 2009-10-15 2011-04-21 부산대학교 산학협력단 Ductility increasing shear wall system
CN102425267A (en) * 2011-08-26 2012-04-25 中国建筑东北设计研究院有限公司 Perforated steel plate concrete shear wall connecting beam provided with stud
CN202248529U (en) * 2011-08-26 2012-05-30 中国建筑东北设计研究院有限公司 Steel plate concrete shear wall connecting beam bestrewed with toggle pins
CN105569266A (en) * 2016-01-31 2016-05-11 深圳大学 Concrete combined connecting beam
CN106836637A (en) * 2017-01-20 2017-06-13 温州大学 Multiple material pipe binding type steel concrete connecting-beam and its construction method
CN107012986A (en) * 2017-04-13 2017-08-04 深圳市建筑设计研究总院有限公司 Multilayer steel-enclosed concrete members composite coupling beams
CN108104367A (en) * 2017-11-27 2018-06-01 深圳大学 A kind of doubly-linked beam and its construction method
CN208533864U (en) * 2018-07-10 2019-02-22 西安理工大学 A kind of FRP- steel plate and concrete composite doubly-linked beam

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Application publication date: 20181211