CN204509978U - Adopt the concrete structure that circle FRP constraint concrete core strengthens - Google Patents
Adopt the concrete structure that circle FRP constraint concrete core strengthens Download PDFInfo
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- CN204509978U CN204509978U CN201520054111.0U CN201520054111U CN204509978U CN 204509978 U CN204509978 U CN 204509978U CN 201520054111 U CN201520054111 U CN 201520054111U CN 204509978 U CN204509978 U CN 204509978U
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Abstract
The utility model discloses a kind of concrete structure adopting round FRP constraint concrete core to strengthen, comprise: outer concrete and at least one circle FRP constraint concrete core, each round FRP constraint concrete core comprises: circle FRP pipe and core concrete, the cross section of circle FRP pipe is formed as circular, outer concrete is cast on the external surface of round FRP pipe, the Filament-wound Machine direction of circle FRP pipe is hoop or is similar to hoop, core concrete is filled in round FRP pipe, and core concrete is environmentally friendly concrete or ordinary concrete.According to concrete structure of the present utility model, utilize novel sustainable development material economy cost, ensure that concrete structure has high-bearing capacity, strong shock resistance, the feature such as lightweight.Owing to justifying FRP constraint concrete core simple structure and when by prefabrication, reducing difficulty of construction, and higher technical economic benefit can be obtained, can be used in the engineering such as Super High, Loads of Long-span Bridges.
Description
Technical field
The utility model belongs to building structure technology field, especially relates to a kind of concrete structure adopting round FRP constraint concrete core to strengthen.
Background technology
In recent years, along with the continuous increase of building height and bridge span, coupled column receives the extensive concern of engineering field.For coupled column, supporting capacity is one of important Performance evaluation criterion.Such as in frame construction, Super High and Loads of Long-span Bridges, utilize limited column section area, one of target that the column section meeting high axial compression ratio performance is pursued for engineering field always.At present, the comparatively normal column section type used has steel concrete, concrete filled steel tube, composite steel tube concrete etc.Concrete is wherein main pressure-bearing material, has played the advantage that concrete compression ability is strong, but concrete material be in comparatively large sstrain time be easy to softening, globality be deteriorated, be unfavorable for the raising of its anti-seismic performance.
In common column section, be easy to softening shortcoming for concrete, FRP constraint concrete column obtains extensive research.How FRP constraint concrete column tool being turned to the concrete structure of practical engineering application, is building engineering field problem just to be achieved.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art.For this reason, the utility model aims to provide a kind of concrete structure adopting round FRP constraint concrete core to strengthen, and is about to circle FRP constraint concrete and is arranged on ordinary concrete cross-sectional internal, to improve partial cross section bearing capacity.In addition, because FRP has strong Corrosion Protection, can utilize, except ordinary concrete, there is corrosive filler, thus alleviate traditional resource exhaustion crisis, increase economic efficiency.
According to the concrete structure that the employing circle FRP constraint concrete core of the utility model embodiment strengthens, comprise: outer concrete and at least one circle FRP constraint concrete core, each described round FRP constraint concrete core comprises: circle FRP pipe, the cross section of described round FRP pipe is formed as circular, described outer concrete is cast on the external surface of described round FRP pipe, and the Filament-wound Machine direction of described round FRP pipe is hoop or is similar to hoop; Core concrete, described core concrete is filled in described round FRP pipe, and described core concrete is environmentally friendly concrete or ordinary concrete.
According to the concrete structure that the employing circle FRP constraint concrete core of the utility model embodiment strengthens, by adopting at least one circle FRP constraint concrete core, this circle FRP constraint concrete core make use of FRP material high-strength light, the advantage that antiseptic property is good, ordinary concrete and multiple environmentally friendly concrete can be adopted as the inner stuffing justifying FRP pipe, novel sustainable development material can not only be utilized cost-saving, and ensure that the concrete structure adopting circle FRP constraint concrete core to strengthen has high-bearing capacity, strong anti-seismic performance, the feature such as lightweight.Owing to justifying FRP constraint concrete core simple structure and when by prefabrication, significantly reducing difficulty of construction.The form utilizing circle FRP constraint concrete core to be arranged on concrete structure inside can obtain higher technical economic benefit, can be used in the engineering structures such as Super High, Loads of Long-span Bridges.
In certain embodiments, described round FRP constraint concrete core is one, and the geometric center of described round FRP constraint concrete core overlaps with the geometric center of described outer concrete.Thus, the concrete structure in low cost, high performance middle-size and small-size cross section can be obtained.
In certain embodiments, described round FRP constraint concrete core is multiple, the geometric center of described multiple round FRP constraint concrete core is positioned on same circle, the center of circle of described circle overlaps with the geometric center of described outer concrete, and described multiple round FRP constraint concrete core is around above-mentioned round uniform intervals distribution.Thus, the concrete structure of low cost, high performance heavy in section size can be obtained.
In certain embodiments, the concrete structure adopting circle FRP constraint concrete core to strengthen also comprises the square steel pipe of hollow, the cross section of described square steel pipe is formed as square, at least one circle FRP constraint concrete core described is located in described square steel pipe, and described outer concrete is filled between described square steel pipe and described round FRP pipe.
In certain embodiments, the concrete structure adopting circle FRP constraint concrete core to strengthen also comprises multi-cavity steel tube, described multi-cavity steel tube has multiple cavity, be provided with at least one circle FRP constraint concrete core in each described cavity, between the inwall of each described cavity and described round FRP pipe, be filled with described outer concrete.
In certain embodiments, the concrete structure adopting circle FRP constraint concrete core to strengthen also comprises longitudinal reinforcement, and described longitudinal reinforcement is distributed in the outside of described round FRP constraint concrete core, and described longitudinal reinforcement is embedded in described outer concrete.
In certain embodiments, the concrete structure adopting circle FRP constraint concrete core to strengthen also comprises multiple stirrup and longitudinal reinforcement, each described stirrup is formed as annular, it is spaced apart in the vertical that at least one circle FRP constraint concrete core is located at described interior described multiple stirrup, described longitudinal reinforcement and at least one circle FRP constraint concrete core described are located in described stirrup, described multiple stirrup, longitudinal reinforcement and described round FRP constraint concrete core form reinforcing cage, and described outer concrete is filled in described multiple stirrup.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the round FRP constraint concrete core according to the utility model embodiment;
Fig. 2 is the schematic cross-section of the concrete structure according to the single round FRP constraint concrete core enhancing of the employing of the utility model embodiment;
Fig. 3 is the schematic cross-section of the concrete structure according to the enhancing of the employing of the utility model embodiment multiple (four) circle FRP constraint concrete core;
Fig. 4 is the schematic cross-section of the concrete column that the square steel pipe strengthened according to the single round FRP constraint concrete core of the employing of the utility model embodiment retrains;
Fig. 5 is the schematic cross-section of the concrete column structure that the multi-cavity steel tube strengthened according to the employing of the utility model embodiment multiple (four) circle FRP constraint concrete core retrains;
Fig. 6 is the schematic cross-section of the steel concrete rod structure according to the single round FRP constraint concrete core enhancing of the employing of the utility model embodiment;
Fig. 7 is the structural representation of the reinforced concrete post according to the compressive reinforcement in the employing circle FRP constraint concrete core Substitute For Partial reinforcing cage of the utility model embodiment.
Reference numeral:
100: concrete structure; 100a: the concrete column of square steel pipe constraint; 100b: reinforced concrete post; 100c: the concrete column of multi-cavity steel tube constraint;
10: circle FRP constraint concrete core; 1: circle FRP pipe; 2: core concrete; 2a: ordinary concrete; 2b: environmentally friendly concrete;
20: outer concrete; 30: square steel pipe; 40: longitudinal reinforcement; 50: multi-cavity steel tube; 60: stirrup;
200: reinforcing cage;
R: the circle of the center of circle formation of multiple round FRP constraint concrete core.
Detailed description of the invention
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " orientation or the position relationship of the instruction such as " center ", " longitudinal direction ", " transverse direction ", " vertically ", " level ", " interior ", " outward ", " axis ", " radial direction ", " circumference " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
The concrete structure 100 strengthened according to the employing circle FRP constraint concrete core of the utility model embodiment is described below with reference to Fig. 1-Fig. 7.
As shown in Figure 1-Figure 3, according to the concrete structure 100 that the employing circle FRP constraint concrete core of the utility model embodiment strengthens, comprise: outer concrete 20 and at least one circle FRP constraint concrete core 10, each round FRP constraint concrete core 10 comprises: circle FRP pipe 1 and core concrete 2, the cross section of circle FRP pipe 1 is formed as circular, outer concrete 20 is cast on the external surface of round FRP pipe 1, and core concrete 2 is filled in round FRP pipe 1.
Here core concrete 2 can be environmentally friendly concrete 2b, and alternatively, environmentally friendly concrete 2b can be seawater sea sand concrete, regenerated aggregate concrete or building refuse concrete etc.
Wherein, seawater sea sand mold concrete mainly refers to the concrete of being played the part of system by seawater and extra large sand, regenerated aggregate concrete or building refuse concrete mainly refer to the concrete produced by the regeneration of solid waste, namely environmentally friendly concrete 2b is that raw material is the regeneration concrete of discarded object at least partially, therefore, environmentally friendly concrete 2b is the building material of sustainable development, and raw material sources comparatively horn of plenty.Certainly, the utility model embodiment is not limited thereto, and environmentally friendly concrete 2b also can utilize flyash equal industrial residue to make, and does not do concrete restriction here.
When core concrete 2 adopts environmentally friendly concrete 2b; not only facilitate urban construction; and be conducive to the problem solving offal treatment, limestone resource and effective use of energy sources; alleviate carrying capacity of environment; alleviate the crisis of traditional resource exhaustion; meanwhile, also reduce cost, improve economic benefit.
Certainly, core concrete 2 also can be ordinary concrete 2a, and ordinary concrete 2a is the traditional concrete for regeneration concrete.Due to features such as the market development of ordinary concrete 2a are stable, construction technology is ripe, therefore ordinary concrete 2a has the advantages such as the purchasing of raw materials is convenient, the engineering time is short, quality is high.
Adopt circle FRP pipe 1 to retrain core concrete 2, the characteristic that FRP intensity is low, ductility is good can be given full play to, to put the humidification of round FRP constraint concrete core 10 in concrete structure 100 to good use.
Say from material, FRP (Fiber Reinforced Plastics/ fibre-reinforced plastics) material is after being mixed according to a certain percentage with matrix material by fibrous material, through the extruding of special mould, drawing and the high performance material that formed.In the utility model embodiment, circle FRP pipe 1 adopts Mechanical entanglement method to make on winding machine, during making, FRP cloth is arranged on creel, FRP cloth is unwinding on creel, through tension system, natural resin groove, Guide head, by little side board band, it moves back and forth and disturbs on the mandrel turned round (mould).Fiber disturbs angle and fiber alignment density degree is preset according to intensity, and by the ratio of mandrel (mould) rotating speed with dolly reciprocating speed, carrys out controling parameters exactly.After solidification, by the composite product demoulding disturbed, form circle FRP pipe 1.
The round FRP pipe 1 be made up of FRP material has that quality is light, hardness is large, mechanical strength advantages of higher, therefore after round FRP pipe 1 pair of core concrete 2 retrains, rigidity and the ductility of round FRP constraint concrete core 10 can not only be strengthened, and the structural strength of circle FRP constraint concrete core 10 and the bearing capacity due to local compression in method of section direction can be improved, make it meet the use standard of constructional materials.Here, the method direction of justifying FRP constraint concrete core 10 refers to the direction perpendicular with the tangential direction of circle FRP constraint concrete core 10.
And the resistance to permeability of FRP material is strong, anti-corrosive properties good, can utilize and there is corrosive low-cost concrete as filler, when the environmentally friendly concrete 2b adopted is doped with corrosive raw materials (as siliceous slag), circle FRP pipe 1 can effectively prevent corrosive substance outer layers from permeating, and avoids corroding the low material of antiseptic property.Therefore, the application life of round FRP constraint concrete core 10 is extended.Meanwhile, when environmentally friendly concrete 2b produces, also without the need to removing the corrosive substance in raw material, procedure of processing and the manufacturing cost of environmentally friendly concrete 2b is decreased.
Preferably, the Filament-wound Machine direction of justifying FRP pipe 1 is hoop or is similar to hoop.For convenience of describing, in the following description, hoop refers to direction shown in Q in Fig. 2, and axially refer to direction shown in P in Fig. 2, radial direction refers to direction shown in O in Fig. 2, will repeat no more afterwards.
Utilize FRP hoop or be similar to hoop be wound around fiber, core concrete 2 can play passive bound effect by circle FRP pipe 1 during compression swelling, give full play to the characteristic that concrete material compression capability is strong, make concrete improve its axial carrying capacity under Three-phase stress state.
Specifically, utility model people find through great many of experiments, the load-deformation curve of circle FRP constraint concrete core 10 is in increasing the change of shape bilinearity, namely after the surrender of cross section, the bearing capacity of circle FRP constraint concrete core 10 continues to rise, circle FRP constraint concrete core 10 can provide more excellent supporting capacity and anti-seismic performance, the partial compression bearing capacity in its method of section direction significantly improves, rigidity, intensity and ductility also rise to some extent, anti-seismic performance is enhanced, thus obtains the more excellent cross section of technical economic benefit.
That is, the concrete structure 100 of the utility model embodiment, be adopt the round FRP constraint concrete core 10 that circle FRP pipe 1 retrains, core concrete 2 is filled, be used as a part for whole concrete structure 100, with the overall performance of Concrete Structure structure 100.
When concrete structure 100 is constructed, can in advance circle FRP pipe 1 be fixed in the model of concrete structure 100, then core concrete 2 is first built, after core concrete 2 maintenance a period of time, build outer concrete 20 again, to form one on the external surface making outer concrete 20 be cast in round FRP pipe 1.
In addition, circle FRP constraint concrete core 10 can by prefabrication, namely round FRP constraint concrete core 10 can be used as independent building materials and concentrates manufacture, sale by factory, and unit in charge of construction requires the round FRP constraint concrete core 10 of buying dimension, quantity according to job site.When constructing at the scene, the effect of circle FRP constraint concrete core 10 is similar to the building materials such as reinforcing bar, build the model stage at concrete structure 100 will justify FRP constraint concrete core 10 and combine with other building materials, then row builds outer concrete 20, thus greatly reduce difficulty of construction.
According to the concrete structure 100 that the employing circle FRP constraint concrete core of the utility model embodiment strengthens, by adopting at least one circle FRP constraint concrete core 10, this circle FRP constraint concrete core 10 make use of FRP material high-strength light, the advantage that antiseptic property is good, ordinary concrete 2a and multiple environmentally friendly concrete 2b can be adopted as the inner stuffing of circle FRP pipe 1, novel sustainable development material can not only be utilized cost-saving, and ensure that the concrete structure 100 adopting circle FRP constraint concrete core to strengthen has high-bearing capacity, strong anti-seismic performance, the feature such as lightweight.Owing to justifying FRP constraint concrete core 10 simple structure and by prefabrication, therefore can significantly reduce difficulty of construction.The form utilizing circle FRP constraint concrete core 10 to be arranged on concrete structure 100 inside can obtain higher technical economic benefit, can be used in the engineering structures such as Super High, Loads of Long-span Bridges.
Describe according to different specific embodiment of the present utility model referring to Fig. 1, Fig. 3-Fig. 7, it should be noted that, in different embodiment, identical label represents identical parts.
First embodiment
In this embodiment, as shown in Figure 1, circle FRP constraint concrete core 10 is one, and the concrete structure 100 of the single round FRP constraint concrete core 10 of this set is applicable to the component in middle-size and small-size cross section, thus, the concrete structure in low cost, high performance middle-size and small-size cross section can be obtained.
Preferably, as shown in Figure 1, the geometric center of justifying FRP constraint concrete core 10 overlaps with the geometric center of outer concrete 20.Thus, concrete structure 100 integrated symmetric that can ensure to adopt round FRP constraint concrete core to strengthen, stable performance, be conducive to component axial compression, reduces the eccentric adverse effect brought.And be convenient to design, the calculating of the engineering structures of the concrete structure 100 adopting round FRP constraint concrete core to strengthen.
In the example of fig. 1, concrete structure 100 entirety adopting circle FRP constraint concrete core to strengthen is square column, and the center of circle of circle FRP constraint concrete core 10 is positioned at the center of concrete structure 100.
Second embodiment
In this embodiment, as shown in Figure 3, circle FRP constraint concrete core 10 is multiple, and the concrete structure 100 of the multiple round FRP constraint concrete core 10 of this set is applicable to the component of heavy in section size.Thus, the concrete structure of low cost, high performance heavy in section size can be obtained.
Particularly, as shown in Figure 3, the geometric center of multiple round FRP constraint concrete core 10 is positioned on same round R, and the center of circle of circle R overlaps with the geometric center of outer concrete 20, and multiple round FRP constraint concrete core 10 is around above-mentioned round R uniform intervals distribution.Namely multiple round FRP constraint concrete core 10 is set in concrete structure 100 inside when strengthening, all multiple round FRP constraint concrete cores 10 should according to Central Symmetry arranged in form, thus, concrete structure 100 integrated symmetric that can ensure to adopt round FRP constraint concrete core to strengthen, stable performance, be conducive to component axial compression, reduce the eccentric adverse effect brought.And be convenient to design, the calculating of the engineering structures of the concrete structure 100 adopting round FRP constraint concrete core to strengthen.
In the example of fig. 3, concrete structure 100 entirety adopting circle FRP constraint concrete core to strengthen is square column, circle FRP constraint concrete core 10 is four, and the center of circle of the round R of four round FRP constraint concrete core 10 formation is positioned at the center of concrete structure 100.
To sum up, in first embodiment and the second embodiment, the number of circle FRP constraint concrete core 10 is arranged flexibly by concrete structure 100 sectional dimension, thus, the excessive problem causing cuff inefficiency of sectional dimension can be avoided, and make section form versatile and flexible.
The concrete structure 100 adopting circle FRP constraint concrete core to strengthen can be used in the coupled column such as concrete column 100a, the reinforced concrete post 100b of square steel pipe constraint and the concrete column 100c of multi-cavity steel tube constraint, its structure types is not limit, and enumerates wherein four kinds of specific constructive form below for the following the 3rd to the 6th embodiment.
3rd embodiment
As shown in Figure 4,3rd embodiment is the concrete column 100a (CFST) of square steel pipe constraint, namely the concrete structure 100 adopting circle FRP constraint concrete core to strengthen also comprises the square steel pipe 30 of hollow, the cross section of square steel pipe 30 is formed as square, circle FRP constraint concrete core 10 is located in square steel pipe 30, and outer concrete 20 is filled between square steel pipe 30 and circle FRP pipe 1.
The setting of outer square steel pipe 30, improves rigidity, the energy dissipation capacity of the concrete structure 100 adopting circle FRP constraint concrete core to strengthen, changes FRP constraint Brittleness of Concrete failure mode, be conducive to seismic design.Thus, the concrete structure 100 adopting circle FRP constraint concrete core to strengthen ensure that the excellent specific properties such as high-bearing capacity, high ductility, antidetonation are strong, lightweight.For this cross section, the layout of circle FRP constraint concrete core 10, can significantly improve column section compression bearing, improve ductility, make built-in round FRP constraint concrete core 10 become the high-performance component of low cost, obtain higher technical economic benefit.
Be arranged to square by outer square steel pipe 30, concrete structure 100 monnolithic case adopting circle FRP constraint concrete core to strengthen is square column, be then convenient to node and connect, facilitate engineering construction.Here, node refers to the tie point of structural member, because concrete structure 100 is square column, square column is carried out being connected being more prone to other structural members in engineering such as beam, body of wall, floor etc., and difficulty of construction reduces.
In the third embodiment, circle FRP constraint concrete core 10 is at least one, and in Fig. 4 example shown, circle FRP constraint concrete core 10 is one, and certainly, when being applied to the component of heavy in section size, circle FRP constraint concrete core 10 can be multiple.
4th embodiment
As shown in Figure 5,3rd embodiment is the concrete column 100c of multi-cavity steel tube constraint, namely the concrete structure 100 adopting circle FRP constraint concrete core to strengthen also comprises multi-cavity steel tube 50, multi-cavity steel tube 50 has multiple cavity, be provided with at least one circle FRP constraint concrete core 10 in each cavity, between the inwall of each cavity and circle FRP pipe 1, be filled with outer concrete 20.
In super high rise structure, the concrete column 100c of normal employing multi-cavity steel tube constraint, because steel are easily surrendered, by arranging at least one circle FRP constraint concrete core 10 in every chamber, not only can improve column section compression bearing, and improve the anti-buckling ability of steel, thus improve structure ductility and shock resistance.
5th embodiment
As shown in Figure 6,5th embodiment is a kind of reinforced concrete post 100b of form, namely the concrete structure 100 adopting circle FRP constraint concrete core to strengthen also comprises longitudinal reinforcement 40, longitudinal reinforcement 40 is distributed in the outside of round FRP constraint concrete core 10, and longitudinal reinforcement 40 is embedded in outer concrete 20.Here, longitudinal reinforcement 40 is arranged along the bearing of trend being parallel to round FRP constraint concrete core 10.Circle FRP constraint concrete core 10 mainly provides compression bearing, and longitudinal reinforcement 40 mainly provides tensile capacity, reach the pressure bearing capacity improving concrete structure 100 and the object strengthening ductility, and owing to justifying the constraint of FRP pipe 1 pair of core concrete 2, improve the globality of reinforced concrete post 100b when high axial compression ratio pressurized, thus be conducive to improving its anti-seismic performance.
In this embodiment, as shown in Figure 6, the geometric center of circle FRP constraint concrete core 10 overlaps with the geometric center of outer concrete 20, and the diameter of circle FRP constraint concrete core 10 is greater than the diameter of longitudinal reinforcement 40.
6th embodiment
As shown in Figure 7, this embodiment is the reinforced concrete post 100b of another kind of form.Particularly, the concrete structure 100 adopting circle FRP constraint concrete core to strengthen comprises multiple stirrup 60 and longitudinal reinforcement 40, each stirrup 60 is formed as annular, multiple stirrup 60 is spaced apart in the vertical, longitudinal reinforcement 40 and at least one circle FRP constraint concrete core 10 are located in stirrup 60, multiple stirrup 60, longitudinal reinforcement 40 and circle FRP constraint concrete core 10 form reinforcing cage 200, outer concrete 20 be filled in comprise multiple stirrup 60 cross section in.
In this embodiment, circle FRP constraint concrete core 10 is identical with the effect of partial compression longitudinal reinforcement 40, alternatively, in reinforced concrete post 100b, circle FRP constraint concrete core 10 substituted for partial compression longitudinal reinforcement 40, thus improves partial cross section compression bearing and the ductility of reinforced concrete post 100b.
Particularly, at least one, interval longitudinal reinforcement 40 between adjacent two round FRP constraint concrete cores 10.In this embodiment, the diameter of circle FRP constraint concrete core 10 equals the diameter of longitudinal reinforcement 40 substantially, and multiple stirrup 60 and longitudinal reinforcement 40 are fixed on the inner side of stirrup 60 discretely.
To sum up, according to the concrete structure 100 that the employing circle FRP constraint concrete core of the utility model embodiment strengthens, exploitativeness is strong, and it is cost-saving that novel sustainable development material can be utilized, and obtains low cost, high performance concrete structure.
In the description of this manual, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (7)
1. the concrete structure adopting round FRP constraint concrete core to strengthen, is characterized in that, comprising: outer concrete and at least one circle FRP constraint concrete core, and each described round FRP constraint concrete core comprises:
Circle FRP pipe, the cross section of described round FRP pipe is formed as circular, and described outer concrete is cast on the external surface of described round FRP pipe, and the Filament-wound Machine direction of described round FRP pipe is hoop or is similar to hoop;
Core concrete, described core concrete is filled in described round FRP pipe, and described core concrete is environmentally friendly concrete or ordinary concrete.
2. the concrete structure adopting circle FRP constraint concrete core to strengthen according to claim 1, it is characterized in that, described round FRP constraint concrete core is one, and the geometric center of described round FRP constraint concrete core overlaps with the geometric center of described outer concrete.
3. the concrete structure adopting circle FRP constraint concrete core to strengthen according to claim 1, it is characterized in that, described round FRP constraint concrete core is multiple, the geometric center of described multiple round FRP constraint concrete core is positioned on same circle, the center of circle of described circle overlaps with the geometric center of described outer concrete, and described multiple round FRP constraint concrete core is around above-mentioned round uniform intervals distribution.
4. the concrete structure adopting circle FRP constraint concrete core to strengthen according to claim 1, it is characterized in that, also comprise the square steel pipe of hollow, the cross section of described square steel pipe is formed as square, at least one circle FRP constraint concrete core described is located in described square steel pipe, and described outer concrete is filled between described square steel pipe and described round FRP pipe.
5. the concrete structure adopting circle FRP constraint concrete core to strengthen according to claim 1, it is characterized in that, also comprise multi-cavity steel tube, described multi-cavity steel tube has multiple cavity, be provided with at least one circle FRP constraint concrete core in each described cavity, between the inwall of each described cavity and described round FRP pipe, be filled with described outer concrete.
6. the concrete structure adopting circle FRP constraint concrete core to strengthen according to claim 1, it is characterized in that, also comprise longitudinal reinforcement, described longitudinal reinforcement is distributed in the outside of described round FRP constraint concrete core, and described longitudinal reinforcement is embedded in described outer concrete.
7. the concrete structure adopting circle FRP constraint concrete core to strengthen according to claim 1, it is characterized in that, also comprise multiple stirrup and longitudinal reinforcement, each described stirrup is formed as annular, described multiple stirrup is spaced apart in the vertical, described longitudinal reinforcement and at least one circle FRP constraint concrete core described are located in described stirrup, described multiple stirrup, longitudinal reinforcement and described round FRP constraint concrete core form reinforcing cage, and described outer concrete is filled in described multiple stirrup.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594186A (en) * | 2015-01-27 | 2015-05-06 | 清华大学 | Concrete structure reinforced by round FRP (fiber-reinforced plastic) confined concrete cores |
| CN105064613A (en) * | 2015-09-06 | 2015-11-18 | 南京工业大学 | Built-in FRP locally restrained concrete combined member |
| CN105672573A (en) * | 2016-03-30 | 2016-06-15 | 广西大学 | High-strength concrete column with combined spiral hoops and square steel pipes |
| CN111395655A (en) * | 2020-03-05 | 2020-07-10 | 南京林业大学 | Sleeve-constrained reinforced concrete-reinforced seawater sea sand concrete structure |
-
2015
- 2015-01-27 CN CN201520054111.0U patent/CN204509978U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594186A (en) * | 2015-01-27 | 2015-05-06 | 清华大学 | Concrete structure reinforced by round FRP (fiber-reinforced plastic) confined concrete cores |
| CN105064613A (en) * | 2015-09-06 | 2015-11-18 | 南京工业大学 | Built-in FRP locally restrained concrete combined member |
| CN105672573A (en) * | 2016-03-30 | 2016-06-15 | 广西大学 | High-strength concrete column with combined spiral hoops and square steel pipes |
| CN111395655A (en) * | 2020-03-05 | 2020-07-10 | 南京林业大学 | Sleeve-constrained reinforced concrete-reinforced seawater sea sand concrete structure |
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