CN104746799B - The environmentally friendly concrete combination columns of steel FRP and its method of construction - Google Patents
The environmentally friendly concrete combination columns of steel FRP and its method of construction Download PDFInfo
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- CN104746799B CN104746799B CN201510039262.3A CN201510039262A CN104746799B CN 104746799 B CN104746799 B CN 104746799B CN 201510039262 A CN201510039262 A CN 201510039262A CN 104746799 B CN104746799 B CN 104746799B
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Abstract
The invention discloses a kind of environmentally friendly concrete combination columns of steel FRP and its method of construction.Coupled column includes at least one vertical section, and vertical section includes square steel tube and circle FRP is managed.Circle FRP pipes are located in square steel tube, and normal concrete is filled between square steel tube and circle FRP pipes, environmentally friendly concrete is filled with circle FRP pipes.According to the environmentally friendly concrete combination columns of steel FRP of the present invention, it make use of the good advantage of FRP material high-strength light, anti-corrosive properties, not only can be using new sustainable development material come cost-effective, and ensure that coupled column has the characteristics that high-bearing capacity, high ductility, in light weight.Simultaneously, the square steel tube of setting adds the rigidity and ductility of coupled column, improve antidetonation, impact resistance, connected beneficial to node, reduce difficulty of construction, so that coupled column turns into low-cost and high-performance component, higher technical economic benefit is obtained, available in the engineering structures such as Super High, Loads of Long-span Bridges.
Description
Technical field
The present invention relates to building structure technology field, more particularly, to a kind of environmentally friendly Combined concretes of steel-FRP-
Post and its method of construction.
Background technology
With being continuously increased for building height and bridge span, coupled column receives the extensive concern of engineering field.At present,
The main member of frame structure, high-rise building and Loads of Long-span Bridges has reinforced column, steel core concrete column, composite steel tube to mix
The column section types such as solidifying earth pillar, these coupled columns play respective advantage in the structure, but are no lack of and exist improvedly
Side.
Such as there is the shortcomings that long in time limit, difficulty is big, efficiency is low, and ordinary reinforced concrete post in reinforced column
It is difficult to meet the requirement for bearing capacity in the case of high axial compression ratio.Therefore, occur steel core concrete column in engineering, and concrete filled steel tube
Post progressively turns into Super High, the important composition component of large-span structure body, and it takes full advantage of its high-bearing capacity and good ductility etc.
Feature.But in the case of larger axial displacement, the steel pipe of steel core concrete column is easily surrendered, then whole column section enters softening rank
Section, bearing capacity are gradually reduced.
For the disadvantages mentioned above of steel core concrete column, FRP constraint concrete column has obtained widely studied.FRP constraint coagulation
The characteristics of earth pillar, is that its force-displacement curve is in bilinearity, i.e., bearing capacity continues to rise after the surrender of section, therefore this post is cut
Face is provided with more superior bearing capacity.
However, the final failure mode of FRP constraint concrete column is fragility, it is unfavorable for antidetonation demand.It is thus proposed that
By FRP, steel pipe, three kinds of combinations of materials of concrete new column section, its section form be internal round steel pipe, outside winding FRP,
Interlayer penetration concrete between FRP and round steel pipe.This column section in terms of bearing capacity and ductility although be obtained for very big
Improvement, but in Practical Project construction, be unfavorable for bean column node connection, constructional difficulties are larger.
How to improve FRP, steel pipe, Combined concrete Novel pole structure, it is urgently to be resolved hurrily to turn into future architecture field
One important topic.
In addition, with the construction of a large amount of new structures and the dismounting of traditional structure, large quantities of building wastes are derived, therefore
Also progressively become the key of Sustainable Development in Future as how reduced cost acquisition high-performance component.
The content of the invention
It is contemplated that at least solves technical problem present in prior art.Therefore, the present invention is intended to provide a kind of steel-
The environmentally friendly concrete combination columns of FRP-, the environmentally friendly Combined concrete Column border node connections of the steel-FRP- are easy, reduce
Engineering construction difficulty, and the environmentally friendly concrete of rich reserves is make use of, traditional resource exhaustion crisis, economy effect can be alleviated
It is beneficial good.
It is another object of the present invention to provide a kind of construction of the above-mentioned environmentally friendly concrete combination columns of steel-FRP-
Method.
The environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention, including at least one vertical section, institute
Stating vertical section includes：Square steel tube, the cross section of the square steel tube are formed as square；Circle FRP pipes, the cross section of the round FRP pipes
Be formed as circular, the round FRP pipes are located in the square steel tube, filled with common between the square steel tube and the round FRP pipes
Concrete, environmentally friendly concrete is filled with the round FRP pipe.
The environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention, the coupled column make use of FRP material
The good advantage of high-strength light, anti-corrosive properties, inner stuffing of the environmentally friendly concrete as circle FRP pipes is employed, can not only be adopted
With new sustainable development material come cost-effective, and it ensure that coupled column has the spy such as high-bearing capacity, high ductility, in light weight
Point.Meanwhile the outside square steel tube set adds the rigidity and ductility of coupled column, antidetonation, impact resistance is improved, beneficial to node
Connection, difficulty of construction is reduced, so that the environmentally friendly concrete combination columns of steel-FRP- turn into the high-performance component of low cost,
Higher technical economic benefit is obtained, available in the engineering structures such as Super High, Loads of Long-span Bridges.
Specifically, the vertical section is multiple that multiple square steel tube in the vertical direction superpositions are set, multiple circles
The superposition of FRP pipes in the vertical direction is set, and the upper end for removing the round FRP pipes of remaining each vertical section of the top exceeds phase
The upper end for the square steel tube answered, the lower end of the square steel tube of remaining each vertical section of bottom is removed beyond corresponding
The round FRP pipes lower end.Thus, it is ensured that coupled column when multistage connects, the square steel tube seam of each section of vertical section with
Circle FRP tube seams are staggered, and certain construction sky is reserved for the welding that is intertwined and connected with square steel tube of circle FRP pipes of next section of vertical section
Between.
Advantageously, the square steel tube of each vertical section and the geometric center of the round FRP pipes overlap.Thus, may be used
Guarantee overall structure is symmetrical, stable performance, and the center of gravity of the environmentally friendly concrete combination columns of steel-FRP- is located at its geometric center
Place, facilitate the design of the engineering structure of the environmentally friendly concrete combination column applications of steel-FRP-, calculate.
Alternatively, chamfering is provided between the adjacent wall of the square steel tube.Thus, it is easy to flash removed, improves integrated beauty
Sight degree, and avoid the environmentally friendly concrete combination columns of steel-FRP- and excessively concentrated in corner's stress of square steel tube.Separately
Outside, when filling normal concrete, normal concrete is relatively easy to fill the corner of square steel tube, avoids producing space.
More specifically, the environmentally friendly concrete is regenerated aggregate concrete or building refuse concrete.Thus,
The problem of not only facilitating urban construction, and advantageously accounting for offal treatment, limestone resource and effective use of energy sources, subtracts
Light carrying capacity of environment, alleviates the crisis of traditional resource exhaustion, meanwhile, cost is also reduced, improves economic benefit.
Alternatively, the square steel tube is the pipe fitting for being bent, being welded by hot rolled steel plate.Thus, square steel tube handling ease,
Cost is not high.
The method of construction of the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention, including following step
Suddenly：S1：Prefabricated square steel tube and circle FRP are managed；S2：The round FRP pipes are vertically placed, environment friend is filled in the past round FRP pipes
Good type concrete；S3：The square steel tube is enclosed on outside the round FRP pipes, the height of the round FRP pipes is higher than the square steel tube；
S4：Normal concrete is filled toward between the round FRP pipes and the square steel tube, is completed first paragraph vertical section；S5：By second
The round FRP pipes of section vertical section are vertically located on the round FRP pipes of the first paragraph vertical section, in two round FRP
The junction winding FRP cloth of pipe；S6：The environmentally friendly concrete of filling in toward the round FRP pipes of the second segment vertical section；
S7：The square steel tube of the second segment vertical section is vertically located on the square steel tube of the first paragraph vertical section, two
Welded the junction of the individual square steel tube；S8：It is managed toward the square steel tube of the second segment vertical section and the round FRP
Between fill normal concrete；S9；Repeat step S5 to S8 reaches design requirement until the height of the coupled column, wherein, finally
The upper end of the square steel tube of one section of vertical section is concordant with the upper end of the round FRP pipes.
The method of construction of the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention, exploitativeness is strong,
And it is cost-effective to make use of new sustainable development material, and high-performance component is obtained, for holding for future architecture industry
Supervention exhibition provides a kind of effective way.
Advantageously, the geometric center coincidence of the square steel tube and the round FRP pipes of every section of vertical section.
Specifically, in step S2 and S6, the environmentally friendly concrete is poured at the top of the round FRP pipes, often
After pouring into 150mm, vibrate 30 seconds, afterwards conserved the obtained environmentally friendly concrete by the round FRP pipes constraint.
Specifically, in step S4 and S8, the normal concrete is poured at the top of the square steel tube, is often poured into
After 150mm, vibrate 30 seconds, afterwards conserved obtained coupled column.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the section layout drawing of the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention；
Fig. 2 is the office of single vertical section in the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention
Portion's schematic cross-sectional view；
When Fig. 3 is that the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention include multiple vertical sections
Structural representation；
Fig. 4 is the flow of the method for construction of the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention
Figure；
Fig. 5 is the construction according to the environmentally friendly concrete combination columns of steel-FRP- of a specific embodiment of the invention
Journey schematic diagram.
Reference：
100：The environmentally friendly concrete combination columns of steel-FRP-；
10：Vertical section；1：Square steel tube 1；2：Circle FRP pipes；3：Environmentally friendly concrete；4：Normal concrete；5：Square steel
Tube seam；6：Circle FRP tube seams；
10a：First paragraph vertical section；1a：The square steel tube of first paragraph vertical section；2a：The circle FRP pipes of first paragraph vertical section；
10b：Second segment vertical section；1b：The square steel tube of second segment vertical section；2b：The circle FRP pipes of second segment vertical section；
10last：Final stage vertical section；1last：The square steel tube of final stage vertical section；2last：Final stage is vertical
The circle FRP pipes of section；
200：Beam.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " length ", " on ", " under ", " vertical ", " water
It is flat ", " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", the orientation of the instruction such as " ring " or position relationship is based on accompanying drawing
Shown orientation or position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply meaning
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention's
Limitation.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple " are meant that two
Individual or two or more.
In the description of the invention, unless otherwise clearly defined and limited, term " connected ", " connection " should do broad sense reason
Solution, for example, it may be fixedly connected or be detachably connected, or integrally；Can mechanically connect；Can be direct
It is connected, can also be indirectly connected by intermediary, can is the connection of two element internals or the interaction of two elements
Relation.For the ordinary skill in the art, it can understand that above-mentioned term in the present invention specific contains with concrete condition
Justice.
The environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention are described below with reference to Fig. 1-Fig. 3
100。
The environmentally friendly concrete combination column 100 of steel-FRP- according to embodiments of the present invention, as depicted in figs. 1 and 2, bag
At least one vertical section 10 is included, each vertical section 10 includes：Square steel tube 1 and circle FRP pipes 2, the cross section side of being formed as of square steel tube 1
Shape, the cross section of circle FRP pipes 2 are formed as circular.Circle FRP pipes 2 are located in square steel tube 1, are filled between square steel tube 1 and circle FRP pipes 2
There is normal concrete 4, environmentally friendly concrete 3 is filled with circle FRP pipes 2.
That is, the environmentally friendly concrete combination columns 100 of steel-FRP- by steel, FRP, environmentally friendly concrete and
Four kinds of combinations of materials of normal concrete form, wherein, steel are respectively formed as being enclosed on FRP pipes outside body and steel pipe with FRP material
On.To be circular to form round FRP pipes 2, circle FRP pipes 2 fill environmentally friendly concrete 3 as inner template for the cross section of FRP pipes.
To be square to form square steel tube 1, normal concrete 4 is filled between square steel tube 1 and circle FRP pipes 2 for the cross section of steel pipe.It is overall
On, the cross section for the environmentally friendly concrete combination columns 100 of steel-FRP- that the present invention provides is rectangular solid cross section, along group
In the radial direction of zygostyle and direction from outside to inside, the combination layer of the environmentally friendly concrete combination columns 100 of steel-FRP- is followed successively by：
Square steel tube 1, normal concrete 4, circle FRP pipes 2 and environmentally friendly concrete 3.Here, for convenience of description, description below
In, the radial direction of coupled column is direction shown in arrow O in Fig. 2, and the axial direction of coupled column is direction shown in arrow P in Fig. 2, coupled column
Ring is direction shown in arrow Q in figure, be will not be described in great detail afterwards.
In an embodiment of the present invention, environmentally friendly concrete 3 be primarily referred to as by the regeneration of solid waste and
The concrete produced, i.e., environmentally friendly concrete 3 are the regeneration concrete that at least a portion raw material is discarded object, therefore,
Environmentally friendly concrete 3 is the building material of sustainable development.Raw material sources for regeneration concrete compared with horn of plenty, such as
Recycling aggregate or building waste etc. in discarded concrete, concrete made of this raw material are regenerated aggregate concrete
Or building refuse concrete.Certainly, not limited to this of the embodiment of the present invention, environmentally friendly concrete 3 is also using flyash
It is made Deng industrial residue, is not especially limited here.
Normal concrete 4 is the traditional concrete for regeneration concrete.The original of normal concrete 4
Expect that human and material resources, the energy of (such as aggregate) collection consumption are larger, cost is high, and brings traditional resource exhaustion, environment
The problem of pollution, it is therefore necessary to add environmentally friendly concrete in the environmentally friendly concrete combination columns 100 of steel-FRP-
3。
With plant-scale development and the increase of urban architecture reconstruction engineering, industrial residue, discarded concrete and build
The generation of building refuse the like waste also Japanese TV play increase, a great problem being processed into for urban development of this kind of discarded object.And incite somebody to action
Environmentally friendly concrete 3 is made in discarded object, and is used in the environmentally friendly Combined concretes of steel-FRP- of the embodiment of the present invention
In post 100, urban construction is not only facilitated, and advantageously accounts for offal treatment, limestone resource and effective use of energy sources
The problem of, carrying capacity of environment is alleviated, alleviates the crisis of traditional resource exhaustion, meanwhile, cost is also reduced, improves economic effect
Benefit.
There is the good characteristic of low intensity, ductility in environmentally friendly concrete 3, by the circle overcoat of FRP pipes 2 and constraint environment close friend
Type concrete 3, the characteristic of environmentally friendly concrete 3 can be maximized favourable factors and minimized unfavourable ones in use.
Specifically, FRP (Fiber Reinforced Plastics/ fibre-reinforced plastics) material is by fiber
After material mixes according to a certain percentage with matrix material, the high-performance section bar material formed by the extruding of special mould, drawing.
In embodiments of the present invention, FRP cloth is arranged in creel during making by circle FRP pipes 2 using Mechanical entanglement method in being made on wrapping machine
On, FRP cloth is unwind from creel, and by tension system, natural resin groove, Guide head, by small side board band, it moves back and forth and stirred
Disturb on the mandrel (mould) turned round.Fiber disturbs angle and preset with fiber alignment density degree according to intensity, and by mandrel (mould)
The ratio between rotating speed and dolly reciprocating speed, carry out control parameter exactly.After solidification, the composite product disturbed is stripped, formed
Circle FRP pipes 2.
Circle FRP pipes 2 have the advantages that light weight, hardness are big, high mechanical strength, therefore circle FRP pipes made of FRP material
After 2 environmentally friendly type concrete 3 enter row constraint, the ductility of coupled column can not only be strengthened, and the structure that can improve coupled column is strong
Degree and bearing capacity, and weaken lateral pressure of the environmentally friendly concrete 3 to outside square steel tube 1, comply with making for construction material
Use standard.
And the resistance to permeability of FRP material is strong, anti-corrosive properties are good, when being doped with corrosive raw materials in environmentally friendly concrete 3
When (such as siliceous slag), circle FRP pipes 2 can prevent corrosive substance outer layers from permeating, and avoid corroding square steel tube 1, extend steel-
The service life of the environmentally friendly concrete combination columns 100 of FRP-.Also therefore, when environmentally friendly concrete 3 produces, also without
The corrosive substance in raw material need to be removed, reduces the manufacturing cost of environmentally friendly concrete 3.
And the outer layer in circle FRP pipes 2 is arranged square steel tube 1, normal concrete 4 is filled between square steel tube 1 and circle FRP pipes 2, can
The structural strength of the environmentally friendly concrete combination columns 100 of steel-FRP- is improved, increases bearing capacity.And outer layer square steel tube 1
Set, improve rigidity, the energy dissipation capacity of the environmentally friendly concrete combination columns 100 of steel-FRP-, change FRP constraint coagulation
Native brittle failure mode, is advantageous to Aseismic Design.Thus, the environmentally friendly concrete combination columns 100 of steel-FRP- not only used
The building material of sustainable development, and ensure that high-bearing capacity, high ductility, antidetonation be strong, the excellent specific property such as in light weight, it is applied to
The structures such as Super High, Loads of Long-span Bridges.
Further, since the intensity of environmentally friendly concrete 3 is relatively low, poor-performing, therefore constraint environment friendly is mixed
The internal layer circle FRP pipes 2 of solidifying soil 3 are arranged to round tube, using the characteristic of circle so that each point on the ring of circle FRP pipes 2
Stress is more uniform, and overall performance is stable, and shock resistance, shock resistance are improved.
And outer layer square steel tube 1 is arranged to square tube, the environmentally friendly monnolithic cases of concrete combination column 100 of steel-FRP- are
Square column, then it is easy to node to connect, facilitates engineering construction.Here, node refers to the tie point of structural member, due to steel-FRP-
Environmentally friendly concrete combination column 100 is square column, by other structures part such as beam 200, wall, floor in square column and engineering
It is more prone to etc. being attached, difficulty of construction reduces.
The environmentally friendly concrete combination column 100 of steel-FRP- according to embodiments of the present invention, the coupled column make use of FRP
The good advantage of material high-strength light, anti-corrosive properties, inner stuffing of the environmentally friendly concrete 3 as circle FRP pipes 2 is employed, no
Only can be using new sustainable development material come cost-effective, and ensure that coupled column has high-bearing capacity, high ductility, weight
The features such as light.Meanwhile the outside rigidity and ductility that set square steel tube 1 to add coupled column, improve antidetonation, impact resistance, profit
Connected in node, reduce difficulty of construction, so that the environmentally friendly concrete combination columns 100 of steel-FRP- turn into the height of low cost
Performance component, higher technical economic benefit is obtained, available in the engineering structures such as Super High, Loads of Long-span Bridges.
Specifically, as shown in Figure 1-Figure 3, the geometric center of the square steel tube 1 of each vertical section 10 and circle FRP pipes 2 overlaps.I.e.
Circle FRP pipes 2 are arranged on the centre inside square steel tube 1, ensure that the environmentally friendly concrete combination columns 100 of steel-FRP- are overall
Symmetrical configuration, stable performance, and the center of gravity of the environmentally friendly concrete combination columns 100 of steel-FRP- is located at its geometric center, side
The design of the engineering structure applied of the environmentally friendly concrete combination columns 100 of steel-FRP-, calculate.
Advantageously, the length of side of the cross-sectional diameter of circle FRP pipes 2 close to the cross section of square steel tube 1, it may also be said to, in side
On the premise of the size of steel pipe 1 is certain, the caliber of design circle FRP pipes 2 as big as possible, to improve environmentally friendly coagulation as far as possible
The accounting of soil 3, reduce the cost of the environmentally friendly concrete combination columns 100 of steel-FRP-.
Further, as shown in figure 1, being provided with chamfering between the adjacent wall of square steel tube 1.That is, the four of square steel tube 1
Individual turning is provided with chamfering, thus, is easy to flash removed, improves the whole of the environmentally friendly concrete combination columns 100 of steel-FRP-
Body aesthetics, and avoid the environmentally friendly concrete combination columns 100 of steel-FRP- square steel tube 1 corner's stress excessively
Concentrate.In addition, when filling normal concrete 4, normal concrete 4 is relatively easy to fill the corner of square steel tube 1, avoids producing
Space.
Alternatively, square steel tube 1 is the pipe fitting for being bent, being welded by hot rolled steel plate.Wherein, hot rolled steel plate has preferable
Toughness and ductility, thus, the handling ease of square steel tube 1, cost is not high.Certainly, when being welded after hot rolled steel plate bending, weldering
The quality of seam should meet welding standard.
Still optionally further, the both ends of square steel tube 1 are put down, so as to ensure the end face of square steel tube 1 by lathe car when prefabricated
Flatness, while ensure the cross section of square steel tube 1 and the perpendicularity of short transverse.
Here, as shown in Fig. 2 the environmentally friendly concrete combination columns 100 of steel-FRP- can only include a vertical section 10,
When vertical section 10 is one, the square steel tube 1 in the vertical section 10 is equal with the axial length of circle FRP pipes 2, so as to steel-FRP-
A square column is integrally formed in environmentally friendly concrete combination column 100.Here, axial length is referred in Fig. 2 shown in arrow P
Pipe fitting bearing of trend on length, hereinafter will not be described again.
It certainly, can also be divided into multiple according to the needs of engineering construction, the environmentally friendly concrete combination columns 100 of steel-FRP-
Vertical section 10.When vertical section 10 for it is multiple when, multiple vertical sections 10 are vertically superimposed setting, during construction from down to up one by one
Generation.
Specifically, as shown in figure 3, the superposition of the in the vertical direction of multiple square steel tubes 1 is set, multiple round FRP pipes 2 are in vertical side
Also superposition is set upwards.It is attached for convenience of two neighboring vertical section 10, removes remaining each vertical section 10 of the top
The upper end of circle FRP pipes 2 exceeds the upper end of corresponding square steel tube 1, removes the square steel tube 1 of remaining each vertical section 10 of bottom
Lower end is beyond the lower end of corresponding circle FRP pipes 2.How this setup is easy to the connection of two neighboring vertical section 10, will be in
Hereinafter carry out illustrating in the method for construction of the environmentally friendly concrete combination columns of steel-FRP-, repeat no more here.
The environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention are described below with reference to Fig. 1-Fig. 5
Method of construction.
The method of construction of the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention, such as Fig. 1-Fig. 4 institutes
Show, comprise the following steps：
S1：Prefabricated square steel tube 1 and circle FRP pipes 2；
S2：Circle FRP pipes 2 are vertically placed, toward the interior environmentally friendly concrete 3 of filling of circle FRP pipes 2；
S3：Square steel tube 1 is enclosed on outside round FRP pipes 2, the height of circle FRP pipes 2 is higher than square steel tube 1；
S4：Toward normal concrete 4 is filled between circle FRP pipes 2 and square steel tube 1, first paragraph vertical section 10a is completed (such as
Shown in Fig. 3, the circle FRP pipes 2 and square steel tube 1 that are related in step S2-S4 refer to first paragraph vertical section 10a circle FRP pipes 2a and
Square steel tube 1a)；
S5：Second segment vertical section 10b circle FRP pipes 2b is vertically located on first paragraph vertical section 10a circle FRP pipes 2a,
In the junction of two round FRP pipes 2 (at i.e. round FRP tube seams 6) winding FRP cloth；
S6：The environmentally friendly concrete 3 of filling in toward second segment vertical section 10b circle FRP pipes 2b；
S7：Second segment vertical section 10b square steel tube 1b is vertically located on first paragraph vertical section 10a square steel tube 1a,
Welded (i.e. at square steel tube seam 5) junction of two square steel tubes 1；
S8：Normal concrete 4 is filled toward between second segment vertical section 10b square steel tube 1b and circle FRP pipes 2b；
S9；Repeat step S5 to S8 reaches design requirement until the height of coupled column, wherein, final stage vertical section
10last square steel tube 1last upper end is concordant with circle FRP pipes 2last upper end.
It should be noted that when the environmentally friendly concrete combination columns 100 of steel-FRP- only include one section of vertical section 10,
As shown in Fig. 2 the vertical section 10 is both first paragraph vertical section, and final stage vertical section, the square steel tube 1 used and circle FRP
The axial length of pipe 2 is equal, and the lower end of square steel tube 1 is concordant with the lower end for justifying FRP pipes 2, and the upper end of square steel tube 1 is also with justifying FRP pipes 2
Upper end it is concordant, in above-mentioned method of construction, it is only necessary to implement from S1 to S4 the step of, the method for construction also the present invention
In protection domain.
When the environmentally friendly concrete combination columns 100 of steel-FRP- include multiple vertical sections 10, as shown in figure 3, first paragraph
The axial length for the square steel tube 1a that vertical section 10a is used is less than circle FRP pipes 2a axial length, afterwards except final stage vertical section
Outside 10last, in each section of vertical section 10, it justifies the upper end that the upper end of FRP pipes 2 exceeds corresponding square steel tube 1, its square steel tube 1
Lower end is beyond the lower end of corresponding circle FRP pipes 2.Coupled column can so be ensured when multistage connects, the side of each section of vertical section 10
Steel pipe seam 5 staggers with circle FRP tube seams 6, is the welding that the circle FRP pipes 2 of next section of vertical section 10 are intertwined and connected with square steel tube 1
Reserve certain construction space.The axial length for the square steel tube 1 that final stage vertical section 10last is used is more than circle FRP pipes 2
Axial length, to ensure final stage vertical section 10last square steel tube 1last upper end with holding level with both hands on circle FRP pipes 2last
Together.Here, the axial length of the square steel tube 1 in the vertical section 10 of center section and circle FRP pipes 2 is not especially limited, as long as
Meet above-mentioned requirements.
Specifically, in step S2 and S6, environmentally friendly concrete 3 is poured into from the top of circle FRP pipes 2, is often poured into
After 150mm, vibrate 30 seconds, afterwards by the obtained environmentally friendly concrete 3 constrained by circle FRP pipes 2 according to concrete code
Conserved.Here, 150mm refers to that the vertical height that environmentally friendly concrete 3 pours into is 150mm.
Specifically, in step S4 and S8, normal concrete 4 is poured into from the top of square steel tube 1, after often pouring into 150mm, is shaken
Smash 30 seconds, afterwards conserved obtained coupled column according to concrete code.Here, 150mm refers to that normal concrete 4 fills
The vertical height entered is 150mm.
Advantageously, the geometric center of the square steel tube 1 of every section of vertical section 10 and circle FRP pipes 2 overlaps.
For ease of understanding, with reference to a specific example shown in Fig. 5, the environmentally friendly concrete of steel-FRP- is described
Building course of the coupled column 100 in construction work.In the construction work, the environmentally friendly concrete combination columns of steel-FRP-
100 need to be attached with beam 200.
The first paragraph vertical section of the environmentally friendly concrete combination columns 100 of steel-FRP- is built first as shown in A to D in Fig. 5
10a, in prefabricated first paragraph vertical section 10a circle FRP pipes 2a and square steel tube 1a, it is desirable to which square steel tube 1a axial length is less than circle
FRP pipes 2a axial length, so as to which square steel tube seam 5 is staggered with circle FRP tube seams 6 when ensureing the connection of coupled column multistage, under
One section of round FRP pipe 2 is intertwined and connected reserves certain construction space with the welding of square steel tube 1.
Specifically, as shown in A in Fig. 5 and B, prefabricated one section round FRP pipes 2a is vertically placed, at the construction field (site), will
Prefabricated circle FRP pipes 2a fills environmentally friendly concrete 3 as inner template.The environmentally friendly maintenance of concrete 3 a period of time
Afterwards, as shown at c, square steel tube 1 is enclosed on outside the environmentally friendly concrete column of FRP constraint from top to bottom, and require to justify FRP pipes 2a and
Square steel tube 1a geometric center overlaps.Then as shown atd, normal concrete 4 will be poured between circle FRP pipes 2a and square steel tube 1a.
In the construction work shown in Fig. 5, beam 200 is connected on first paragraph vertical section 10a, therefore as shown in E in Fig. 5,
After the completion of first paragraph vertical section 10a construction, first paragraph vertical section 10a and beam 200 are attached, the process of connection can use
The construction method of beam-to-column joint disclosed in prior art, is not specifically described here.Then it is using lift-on/lift-off system that second segment is vertical
Section 10b circle FRP pipes 2b and first paragraph vertical section 10a circle FRP pipe 2a concentric alignments, and using the side of artificial winding FRP cloth
Method connects the circle FRP tube seams 6 of the two end.
After the completion of two sections of round FRP pipes 2 connect, as shown in F-H in Fig. 5, in second segment vertical section 10b circle FRP pipes 2b
After filling environmentally friendly concrete 3, it is environment-friendly that second segment square steel tube 1b is enclosed on by FRP constraint using lift-on/lift-off system from top to bottom
Outside type concrete column, and it is welded to connect at the seam 5 of the square steel tube with first paragraph vertical section 10a.Then, in second segment
Normal concrete 4 is poured between vertical section 10b circle FRP pipes 2b and square steel tube 1b.
Circulation step E to step H successively afterwards, until reaching construction design height.As shown in figure 3, erected in final stage
In straight section 10last, square steel tube 1last is lengthened, and makes square steel tube 1last elevation of top identical with circle FRP pipe 2last elevation of top.
To sum up, the method for construction of the environmentally friendly concrete combination columns of steel-FRP- according to embodiments of the present invention, can implement
Property it is strong, and make use of new sustainable development material come it is cost-effective, and obtain high-performance component, be future architecture industry can
Sustainable development provides a kind of effective way.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the feature for combining the embodiment or example description
It is contained at least one embodiment or example of the present invention.In this manual, the schematic representation of above-mentioned term is differed
Surely identical embodiment or example are referred to.Moreover, specific features, structure, material or the feature of description can be any
Combined in an appropriate manner in one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (4)
1. a kind of method of construction of the environmentally friendly concrete combination columns of steel-FRP-, it is characterised in that comprise the following steps：
S1：Prefabricated square steel tube and circle FRP are managed；
S2：The round FRP pipes are vertically placed, environmentally friendly concrete is filled in the past round FRP pipes；
S3：The square steel tube is enclosed on outside the round FRP pipes, the height of the round FRP pipes is higher than the square steel tube；
S4：Normal concrete is filled toward between the round FRP pipes and the square steel tube, is completed first paragraph vertical section；
S5：The round FRP pipes of second segment vertical section are vertically located on the round FRP pipes of the first paragraph vertical section,
The junction winding FRP cloth of two round FRP pipes；
S6：The environmentally friendly concrete of filling in toward the round FRP pipes of the second segment vertical section；
S7：The square steel tube of the second segment vertical section is vertically located on the square steel tube of the first paragraph vertical section,
Welded in the junction of two square steel tubes；
S8：Normal concrete is filled between toward the square steel tube and the round FRP pipes of the second segment vertical section；
S9；Repeat step S5 to S8 reaches design requirement until the height of the coupled column, wherein, the institute of final stage vertical section
The upper end for stating square steel tube is concordant with the upper end of the round FRP pipes.
2. the method for construction of the environmentally friendly concrete combination columns of steel-FRP- according to claim 1, it is characterised in that
The geometric center coincidence of the square steel tube and the round FRP pipes of every section of vertical section.
3. the method for construction of the environmentally friendly concrete combination columns of steel-FRP- according to claim 1, it is characterised in that
In step S2 and S6, the environmentally friendly concrete is poured at the top of the round FRP pipes, after often pouring into 150mm, is vibrated
30 seconds, the obtained environmentally friendly concrete by the round FRP pipes constraint is conserved afterwards.
4. the method for construction of the environmentally friendly concrete combination columns of steel-FRP- according to claim 1, it is characterised in that
In step S4 and S8, the normal concrete is poured at the top of the square steel tube, after often pouring into 150mm, is vibrated 30 seconds, it
Obtained coupled column is conserved afterwards.
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| CN105003027A (en) * | 2015-07-29 | 2015-10-28 | 温州大学 | FRP restrained pipe regenerated mixed concrete combination column |
| CN105442755B (en) * | 2015-07-30 | 2018-04-10 | 广城建设集团有限公司 | Regeneration concrete post |
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| JP2004190364A (en) * | 2002-12-12 | 2004-07-08 | Kajima Corp | Precast src column joint part structure |
| KR20080057552A (en) * | 2006-12-20 | 2008-06-25 | 재단법인 포항산업과학연구원 | Connection method of pre-cast concrete filled steel tube and structure with the same |
| KR20080057553A (en) * | 2006-12-20 | 2008-06-25 | 재단법인 포항산업과학연구원 | Connection structure of pre-cast concrete filled steel tube |
| CN101736860A (en) * | 2009-12-16 | 2010-06-16 | 沈阳建筑大学 | Circular cross-section steel-concrete-FRP solid composite column |
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| JP2004332514A (en) * | 2003-05-06 | 2004-11-25 | Keijiro Dan | Columnar member |
| CN204510621U (en) * | 2015-01-27 | 2015-07-29 | 清华大学 | The environmentally friendly concrete combination column of steel-FRP- |
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| JP2004190364A (en) * | 2002-12-12 | 2004-07-08 | Kajima Corp | Precast src column joint part structure |
| KR20080057552A (en) * | 2006-12-20 | 2008-06-25 | 재단법인 포항산업과학연구원 | Connection method of pre-cast concrete filled steel tube and structure with the same |
| KR20080057553A (en) * | 2006-12-20 | 2008-06-25 | 재단법인 포항산업과학연구원 | Connection structure of pre-cast concrete filled steel tube |
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