CN105003027A - FRP restrained pipe regenerated mixed concrete combination column - Google Patents
FRP restrained pipe regenerated mixed concrete combination column Download PDFInfo
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- CN105003027A CN105003027A CN201510452922.0A CN201510452922A CN105003027A CN 105003027 A CN105003027 A CN 105003027A CN 201510452922 A CN201510452922 A CN 201510452922A CN 105003027 A CN105003027 A CN 105003027A
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Abstract
The invention discloses an FRP (Fiber Reinforced Plastic) restrained pipe regenerated mixed concrete combination column, which comprises an FRP pipe, a steel pipe and a mixture inner core, wherein the mixture inner core comprises regenerated concrete blocks and fresh concrete which are mutually stirred into a whole; the mixture inner core is positioned in the steel pipe; and the steel pipe is positioned in an inner hole of the FRP pipe. The combination column has the following advantages that 1, the compressive strength and the ductility are high; 2, the bending strength and the ductility are high; 3, the durability is high; and 4, the construction is convenient.
Description
Technical field
The present invention relates to a kind of FRP constraint pipe renewable hybrid concrete coupled column.
Background technology
A kind of new concrete recycling of current appearance mode, is broken into large-size concrete block by discarded concrete and directly mixes with fresh concrete and vibrate thus formed " renewable hybrid concrete ".This way of recycling has the following advantages: (1) removal process is simple efficient, economy, environmental protection.Conventional regeneration aggregate needs to consume a large amount of human and material resources and the energy in preparation process, and with secondary pollutions such as noises; And discarded concrete only need be broken into large-sized concrete block by this novel way of recycling, energy consumption is low, more low-carbon environment-friendly.(2) rate of recovery is high.Can produce a large amount of unserviceable fines (<3mm) in conventional regeneration aggregate preparation process, the rate of recovery is lower; And the discarded fines that this novel way of recycling produces is few, the most of sand in discarded concrete, gravel and mortar all can be recovered utilization.But there is following defect in the coupled column be made up of above-mentioned new concrete recycling mode: the interface 1, between new, old concrete is weaker; 2, the intensity of discarded concrete is usually lower and uneven, thus adds the inhomogeneities of renewable hybrid concrete.These all cause the intensity of coupled column poor.
Summary of the invention
In view of the deficiency of background technology, technical problem to be solved by this invention is to provide that a kind of intensity is higher, ductility is better and durability better FRP constraint pipe renewable hybrid concrete coupled column.
For this reason, the technical scheme of patent of the present invention is: FRP constraint pipe renewable hybrid concrete coupled column, it is characterized in that: comprise FRP pipe, steel pipe and mixture inner core, mixture inner core comprises mutually stirring integrated regeneration concrete block and green concrete, described mixture inner core is in steel pipe, and described steel pipe is in the endoporus of FRP pipe.
In technique scheme: between described FRP pipe and steel pipe, there is light weight concrete construction layer.
The present invention has the following advantages: (1) has good compressive strength and ductility, the origin cause of formation: the constraint of FRP pipe and steel pipe greatly can improve compressive strength and the ductility of core concrete; (2) there is higher flexural strength and ductility, the origin cause of formation: the anti-bending bearing capacity of this coupled column is mainly derived from steel pipe tension and constraint concrete compression, therefore has higher intensity, rigidity and ductility.FRP pipe fiber is mainly circumferentially arranged, has both overcome the weakness that general fibre modulus of elasticity is low, it also avoid longitudinal fiber and to rupture the brittle fracture caused; (3) good durability, the origin cause of formation: the FRP pipe with exceptional durability by steel pipe and concrete and external environment condition isolated, overcome the shortcoming of steel pipe easy-to-rust and renewable hybrid concrete poor durability; (4) easy construction, the origin cause of formation: due to the existence of steel pipe and FRP pipe, without the need to formwork for placing; Steel pipe, FRP pipe and pea gravel concreten between the two can carry out prefabricated in factory, both can improve construction quality, and can bear part working load again; Do not adopt plain bars, both avoided reinforcing bar binding link and be also conducive to building of renewable hybrid concrete and vibrate.
Accompanying drawing explanation
The cross sectional representation of FRP constraint pipe renewable hybrid concrete coupled column of Fig. 1 for inventing the first embodiment and providing.
The cross sectional representation of the FRP constraint pipe renewable hybrid concrete coupled column that Fig. 2 provides for invention the second embodiment.
The cross sectional representation of FRP constraint pipe renewable hybrid concrete coupled column of Fig. 3 for inventing the third embodiment and providing.
Detailed description of the invention
With reference to shown in Fig. 2, the FRP constraint pipe renewable hybrid concrete coupled column that the first embodiment of the present invention provides, comprise FRP pipe 1, steel pipe 2 and mixture inner core 3, mixture inner core 3 comprises mutually stirring integrated regeneration concrete block 4 and green concrete 5, described mixture inner core 3 is in steel pipe 2, described steel pipe 2 is in the endoporus of FRP pipe 1, and described FRP pipe 1 is close to and is wrapped up steel pipe 2.
With reference to shown in Fig. 1, the second embodiment of the present invention is substantially identical with the first embodiment, difference is only to adopt following structure to replace: have light weight concrete construction layer 6 between described FRP pipe 1 and steel pipe 2, this light weight concrete construction layer generally adopts mortar or pea gravel concreten.
With reference to shown in Fig. 3, the third embodiment of the present invention is substantially identical with the second embodiment, and difference is only to increase following structure: described FRP pipe 1 is with multiple floor 7 equally distributed around the center of circle, and floor 7 is against on steel pipe 2, and described floor 7 offers through hole.Floor 7 can withstand steel pipe 2 to center, and can strengthen FRP pipe 1 and concrete contact surface, the bonding force of both raisings cooperation place, and the existence of through hole can promote both conjugations further.In addition, multiple floor 7 can be assisted and be played positioning action, makes the placement location of steel pipe 2 more accurate.
Claims (5)
1. a FRP constraint pipe renewable hybrid concrete coupled column, it is characterized in that: comprise FRP pipe, steel pipe and mixture inner core, mixture inner core comprises mutually stirring integrated regeneration concrete block and green concrete, and described mixture inner core is in steel pipe, and described steel pipe is in the endoporus of FRP pipe.
2. FRP constraint pipe renewable hybrid concrete coupled column according to claim 1, is characterized in that: described FRP pipe is close to and wraps up steel pipe.
3. FRP constraint pipe renewable hybrid concrete coupled column according to claim 1, is characterized in that: have light weight concrete construction layer between described FRP pipe and steel pipe.
4. the FRP constraint pipe renewable hybrid concrete coupled column according to claim 1 or 3, is characterized in that: described FRP pipe racks has equally distributed multiple floor around the center of circle, and floor is against on steel pipe.
5. FRP constraint pipe renewable hybrid concrete coupled column according to claim 4, is characterized in that: described floor offers through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510452922.0A CN105003027A (en) | 2015-07-29 | 2015-07-29 | FRP restrained pipe regenerated mixed concrete combination column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510452922.0A CN105003027A (en) | 2015-07-29 | 2015-07-29 | FRP restrained pipe regenerated mixed concrete combination column |
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| CN105003027A true CN105003027A (en) | 2015-10-28 |
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| CN201510452922.0A Pending CN105003027A (en) | 2015-07-29 | 2015-07-29 | FRP restrained pipe regenerated mixed concrete combination column |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781017A (en) * | 2016-05-06 | 2016-07-20 | 温州大学 | Ultrahigh-performance assembly column and manufacturing method thereof |
| CN106193285A (en) * | 2016-06-22 | 2016-12-07 | 温州大学 | A kind of sea sand renewable hybrid concrete component |
| CN107989266A (en) * | 2017-10-30 | 2018-05-04 | 华侨大学 | Inside fill out the concrete filled steel tube coupled column and its construction method of segment work stone |
| CN108005310A (en) * | 2017-12-29 | 2018-05-08 | 沈阳建筑大学 | A kind of FRP section bars-steel tube-concrete superposed column |
| CN108894432A (en) * | 2018-07-19 | 2018-11-27 | 浙江大学 | A kind of very-high performance steel fiber concrete pipe constraint regeneration monolith column |
| CN113969642A (en) * | 2020-07-07 | 2022-01-25 | 香港理工大学 | Novel FRP confined concrete post |
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2015
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| CN200943287Y (en) * | 2006-07-17 | 2007-09-05 | 福州大学 | Light steel pipe/concrete column |
| CN201198632Y (en) * | 2008-05-23 | 2009-02-25 | 合肥工业大学 | Fiber composite material thin wall steel tube concrete composite structure |
| CN201386250Y (en) * | 2009-02-26 | 2010-01-20 | 南京工业大学 | Composite material lattice sandwich pipe confined concrete pier column with functions of cushioning and energy absorbing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781017A (en) * | 2016-05-06 | 2016-07-20 | 温州大学 | Ultrahigh-performance assembly column and manufacturing method thereof |
| CN106193285A (en) * | 2016-06-22 | 2016-12-07 | 温州大学 | A kind of sea sand renewable hybrid concrete component |
| CN107989266A (en) * | 2017-10-30 | 2018-05-04 | 华侨大学 | Inside fill out the concrete filled steel tube coupled column and its construction method of segment work stone |
| CN108005310A (en) * | 2017-12-29 | 2018-05-08 | 沈阳建筑大学 | A kind of FRP section bars-steel tube-concrete superposed column |
| CN108894432A (en) * | 2018-07-19 | 2018-11-27 | 浙江大学 | A kind of very-high performance steel fiber concrete pipe constraint regeneration monolith column |
| CN108894432B (en) * | 2018-07-19 | 2020-04-28 | 浙江大学 | Constraint regeneration block concrete column with ultra-high performance steel fiber concrete pipe |
| CN113969642A (en) * | 2020-07-07 | 2022-01-25 | 香港理工大学 | Novel FRP confined concrete post |
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Application publication date: 20151028 |