CN106088474A - Rectangular steel pipe GFRP pipe concrete coupled column - Google Patents
Rectangular steel pipe GFRP pipe concrete coupled column Download PDFInfo
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- CN106088474A CN106088474A CN201610393793.7A CN201610393793A CN106088474A CN 106088474 A CN106088474 A CN 106088474A CN 201610393793 A CN201610393793 A CN 201610393793A CN 106088474 A CN106088474 A CN 106088474A
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- pipe
- gfrp
- rectangular steel
- steel pipe
- concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a kind of rectangular steel pipe GFRP pipe concrete coupled column, including rectangular steel pipe, the GFRP pipe that coaxial sleeve is located in described rectangular steel pipe, one end is fixing with described GFRP pipe, the other end passes the sidewall of described rectangular steel pipe and passes through the anchor pole that nut is fixing, and being filled in the concrete between rectangular steel pipe and GFRP pipe.The present invention utilizes GFRP to replace core space concrete, on the one hand utilizes the high-elastic mould of GFRP, high intensity, low-density advantage to reduce deadweight；On the other hand, under three-dimensional stress state, GFRP pipe will not occur plastic flow as concrete, and then can continue to bear the squeezing action of outer concrete, it is ensured that outer concrete is in three-dimensional stress state, improves bearing capacity and the ductility of structure.
Description
Technical field
The present invention relates to a kind of fixed building component, particularly to a kind of combinative structure post for building.
Background technology
Steel performance can give full play to steel and the respective advantage of concrete bi-material, has bearing capacity
Height, rigidity and the advantage that toughness is big, anti-seismic performance is good.Concrete filled steel tube is the one of combinative structure, refers in steel pipe
A kind of component of fill concrete, can be divided into circle, rectangle and abnormity by cross section.Concrete filled steel tube utilizes between steel and concrete
Interacting, i.e. the steel pipe effect of contraction to core concrete, makes concrete be under complex stress condition, so that concrete
Intensity improves, and plasticity and toughness are improved.Simultaneously as the existence of concrete, the flexing that steel pipe is too early can be delayed, it is ensured that
The performance of its intensity.
But existing steel core concrete column there is also some technological deficiencies, need to improve further.
Summary of the invention
It is an object of the invention to, it is provided that a kind of rectangular steel pipe-GFRP pipe concrete coupled column.
The core content of the present invention is, a kind of rectangular steel pipe-GFRP pipe concrete coupled column, including rectangular steel pipe, coaxially
The GFRP pipe being sheathed in described rectangular steel pipe, one end is fixing with described GFRP pipe (outer wall), the other end passes described rectangle steel
The sidewall of pipe by the fixing anchor pole of nut, and it is filled in the concrete between rectangular steel pipe and GFRP pipe.
Preferably, described anchor pole is FRP anchor pole, and one end of described FRP anchor pole is bonding with GFRP pipe, the other end passes rectangle
Fix with nut after the sidewall of steel pipe.Described anchor pole is 4 groups, along the circumference uniformly arrangement of GFRP pipe.
Preferably, in terms of parts by weight, described concrete includes following component: cement 380-420, medium sand 500-700, glass
Glass fiber 15-25, water 180-200, coarse aggregate 800-1000, flyash 20-40, diminishing synergist 3-5, extender 10-25.Institute
The structural formula stating diminishing synergist is:
In formula, a:b:c=1:1.2:1, n are 45～50, and m is 45～50, and d is 50～80.
Operation principle and the advantage of the present invention be: the present invention utilizes GFRP to replace core space concrete, on the one hand utilizes
The high-elastic mould of GFRP, high intensity, low-density advantage reduce deadweight；On the other hand, under three-dimensional stress state, GFRP pipe will not
As concrete, there is plastic flow, and then can continue to bear the squeezing action of outer concrete, it is ensured that outer concrete
It is in three-dimensional stress state, improves bearing capacity and the ductility of structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 a, Fig. 2 b be respectively the most ideally with rectangular steel pipe coagulation post soil steel under virtual condition and concrete phase interaction
Use schematic diagram.
Fig. 2 c is rectangular steel pipe-GFRP pipe concrete coupled column steel, GFRP pipe, the interaction schematic diagram of concrete.
Detailed description of the invention
After deliberation, it is found by the applicant that rectangular steel tube with concrete infilled has techniques below defect: first, rectangle steel tube sheet
Flakiness ratio is relatively big, and steel plate easily occurs flexing before reaching intensity, makes structural bearing capacity weakened, the rectangular steel pipe pact to concrete
Restraint indifferent；Secondly, there is contraction in concrete after pouring end, and concrete declines with the cementation of steel pipe, and the two goes out
Existing gap causes steel pipe to lose efficacy the effect of contraction of concrete；As shown in Figure 2 a and 2 b, concrete under multi-dimensional stress state,
Core space can occur plastic flow, and internal concrete is that mecystasis no longer extrudes outer concrete, causes outer concrete
Not three-dimensional stress state, the bearing capacity of peripheral concrete, ductility, plasticity are below theoretical value.Concrete filled steel tube and steel
Structure comparison deadweight is the biggest.
To this end, applicant proposed following technical scheme:
As it is shown in figure 1, the rectangular steel pipe-GFRP pipe concrete coupled column of the present invention mainly by rectangular steel pipe 1, GFRP pipe 2,
FRP anchor pole 3, FRP nut 4 and slightly expanded concrete 5 are constituted.Rectangular steel pipe is wrapped in the outermost layer of post, and GFRP pipe is positioned in post
The heart, is coaxially disposed with described rectangular steel pipe, and on the direction of cross section, GFRP pipe is 4 groups, piles the circumference being distributed in GFRP pipe
On, on the axis direction of GFRP pipe, GFRP pipe is spaced apart.In other words, along the direction of GFRP pipe axis, it is evenly distributed with
Organizing pull bar, often group pull bar is 4, and the circumference along GFRP pipe is uniformly distributed more.Also or it is distributed 4 rows in the circumference of GFRP pipe to draw
Bar, often row's pull bar has multiple, spaced apart along the axis direction of GFRP pipe.Rectangular steel pipe and GFRP pipe also serve as construction casting simultaneously
The template of concrete uses.FRP anchor pole is through the through hole on rectangular steel pipe, and one end utilizes high-strength engineering adhesive to be pasted onto GFRP
Tube-surface.After the concrete has set, the FRP anchor pole being exposed at outside rectangular steel pipe screws FRP nut.FRP anchor pole is in vertical spacing
For 150mm～250mm.Slightly expanded concrete is cast in the region that rectangular steel pipe becomes with GFRP circumference of cannon bone.GFRP is a kind of inorganic
Nonmetal-fiber-material, can be fabricated to various sheet material and tubing as required.The elastic modelling quantity of GFRP is 70GPa, is concrete
More than 3 times；The tensile strength of GFRP is at more than 1000MPa, and strength to density ratio is 60 times of concrete, and cheap.
When bearing vertical load: 1, rectangular steel pipe, GFRP pipe, slightly expanded concrete three's shared vertical load.
2, slightly expanded concrete can occur lateral magnification when bearing vertical load, now by outside rectangular steel pipe and
GFRP pipe is common retrains its transversely deforming, makes slightly expanded concrete be in three dimension stress state.
3, FRP anchor pole and FRP nut provide transversely deforming constraint for rectangular steel pipe, improve its anti-bulging Qu Nengli and to coagulation
The binding effect of soil.
The work process of the present invention is as follows: first, utilizes high intensity engineering adhesive to carry out even FRP anchor pole and GFRP pipe
Connect.Then FRP anchor pole and the GFRP pipe steel plate to having openning hole in advance is utilized to carry out location assembly.By assembled good Plate Welding it is
Rectangular steel pipe.Utilize regulation that the position of rectangular steel pipe carries out on horizontal plane by FRP nut with fixing after by prefabricated entirety
It is transported to engineering construction position install.Pour micro-swollen between for template with rectangular steel pipe and GFRP pipe after completing to install
Swollen concrete.Component is carried out water seasoning solidify completely to concrete.
In a further embodiment, concrete is optimized design.
In terms of parts by weight, regeneration concrete includes following component: cement 380-420, medium sand 500-700, glass fibre
15-25, water 180-200, coarse aggregate 800-1000, flyash 20-40, diminishing synergist 3-5, extender 10-25.Wherein, institute
The structural formula stating diminishing synergist is:
In formula, a:b:c=1:1.2:1, n are 45～50, and m is 45～50, and d is 50～80.
Experiment 1-8
Note: matched group be use ordinary water-reducing agent concrete, its 3d intensity be 130Mpa, 28d intensity be 135Mpa.Institute
Stating extender is UEA or AEA.
Claims (5)
1. a rectangular steel pipe-GFRP pipe concrete coupled column, it is characterised in that include that rectangular steel pipe, coaxial sleeve are located at described
GFRP pipe in rectangular steel pipe, one end is fixing with described GFRP pipe, the other end passes the sidewall of described rectangular steel pipe and passes through spiral shell
The anchor pole that cap is fixing, and it is filled in the concrete between rectangular steel pipe and GFRP pipe.
Rectangular steel pipe-GFRP pipe concrete coupled column the most according to claim 1, it is characterised in that described anchor pole is FRP
Anchor pole, one end of described FRP anchor pole is bonding with GFRP pipe, the other end is fixed with nut after the sidewall of rectangular steel pipe.
Rectangular steel pipe-GFRP pipe concrete coupled column the most according to claim 2, it is characterised in that described anchor pole is 4
Group, along the circumference uniformly arrangement of GFRP pipe.
Rectangular steel pipe-GFRP pipe concrete coupled column the most according to claim 1, it is characterised in that in terms of parts by weight,
Described concrete includes following component: cement 380-420, medium sand 500-700, glass fibre 15-25, water 180-200, coarse aggregate
800-1000, flyash 20-40, diminishing synergist 3-5, extender 10-25.
Rectangular steel pipe-GFRP pipe concrete coupled column the most according to claim 4, it is characterised in that described diminishing potentiation
The structural formula of agent is:
In formula, a:b:c=1:1.2:1, n are 45～50, and m is 45～50, and d is 50～80.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610393793.7A CN106088474A (en) | 2016-06-03 | 2016-06-03 | Rectangular steel pipe GFRP pipe concrete coupled column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610393793.7A CN106088474A (en) | 2016-06-03 | 2016-06-03 | Rectangular steel pipe GFRP pipe concrete coupled column |
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| Publication Number | Publication Date |
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| CN106088474A true CN106088474A (en) | 2016-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610393793.7A Pending CN106088474A (en) | 2016-06-03 | 2016-06-03 | Rectangular steel pipe GFRP pipe concrete coupled column |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522469A (en) * | 2016-11-11 | 2017-03-22 | 广东工业大学 | Double-tube centering device and realizing method |
| CN108222371A (en) * | 2018-01-26 | 2018-06-29 | 华侨大学 | A kind of assembly concrete-filled steel tube coupled column and joining method |
| CN108360744A (en) * | 2018-02-11 | 2018-08-03 | 广东工业大学 | A kind of structural column |
| CN108930363A (en) * | 2018-06-25 | 2018-12-04 | 江南大学 | A kind of steel core concrete column of end stiffener |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220764A (en) * | 1988-07-06 | 1990-01-24 | Nkk Corp | Construction method for square stressed concrete pole |
| CN101177965A (en) * | 2007-12-06 | 2008-05-14 | 合肥工业大学 | Steel pipe-FRP pipe core concrete combination structure |
| CN203270938U (en) * | 2013-06-03 | 2013-11-06 | 国家电网公司 | Steel skeleton and steel pipe concrete combination column |
| CN105350441A (en) * | 2015-11-30 | 2016-02-24 | 广东工业大学 | Concrete combined box beam internally provided with tie bar steel and box column |
| CN205153314U (en) * | 2015-11-12 | 2016-04-13 | 山东科技大学 | Cavity intermediate layer combined type steel core concrete column |
-
2016
- 2016-06-03 CN CN201610393793.7A patent/CN106088474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0220764A (en) * | 1988-07-06 | 1990-01-24 | Nkk Corp | Construction method for square stressed concrete pole |
| CN101177965A (en) * | 2007-12-06 | 2008-05-14 | 合肥工业大学 | Steel pipe-FRP pipe core concrete combination structure |
| CN203270938U (en) * | 2013-06-03 | 2013-11-06 | 国家电网公司 | Steel skeleton and steel pipe concrete combination column |
| CN205153314U (en) * | 2015-11-12 | 2016-04-13 | 山东科技大学 | Cavity intermediate layer combined type steel core concrete column |
| CN105350441A (en) * | 2015-11-30 | 2016-02-24 | 广东工业大学 | Concrete combined box beam internally provided with tie bar steel and box column |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106522469A (en) * | 2016-11-11 | 2017-03-22 | 广东工业大学 | Double-tube centering device and realizing method |
| CN108222371A (en) * | 2018-01-26 | 2018-06-29 | 华侨大学 | A kind of assembly concrete-filled steel tube coupled column and joining method |
| CN108222371B (en) * | 2018-01-26 | 2023-11-21 | 华侨大学 | Assembled steel pipe concrete composite column and splicing method |
| CN108360744A (en) * | 2018-02-11 | 2018-08-03 | 广东工业大学 | A kind of structural column |
| CN108930363A (en) * | 2018-06-25 | 2018-12-04 | 江南大学 | A kind of steel core concrete column of end stiffener |
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Application publication date: 20161109 |