CN106337533A - FRP steel tube recycled concrete short column - Google Patents
FRP steel tube recycled concrete short column Download PDFInfo
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- CN106337533A CN106337533A CN201610944592.1A CN201610944592A CN106337533A CN 106337533 A CN106337533 A CN 106337533A CN 201610944592 A CN201610944592 A CN 201610944592A CN 106337533 A CN106337533 A CN 106337533A
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- frp
- steel pipe
- concrete
- regeneration concrete
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 190
- 239000010959 steel Substances 0.000 title claims abstract description 190
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 16
- 239000011398 Portland cement Substances 0.000 claims abstract description 13
- 230000008929 regeneration Effects 0.000 claims description 63
- 238000011069 regeneration method Methods 0.000 claims description 63
- 239000004744 fabric Substances 0.000 claims description 53
- 238000012360 testing method Methods 0.000 claims description 36
- 239000011888 foil Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 239000003292 glue Substances 0.000 claims description 16
- 239000003822 epoxy resin Substances 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 15
- 229920000647 polyepoxide Polymers 0.000 claims description 15
- 238000012423 maintenance Methods 0.000 claims description 12
- 238000010998 test method Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 10
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000012669 compression test Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 239000008187 granular material Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 230000001788 irregular Effects 0.000 claims description 3
- 238000002372 labelling Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 39
- 229910052799 carbon Inorganic materials 0.000 description 39
- 229920000049 Carbon (fiber) Polymers 0.000 description 37
- 239000004917 carbon fiber Substances 0.000 description 37
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 37
- 239000000843 powder Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 206010020112 Hirsutism Diseases 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
- B32B13/14—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/16—Layered products comprising a layer of metal next to a particulate layer
-
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2873—Cutting or cleaving
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses an FRP steel tube recycled concrete short column which comprises FRP layers, a seamless steel pipe, natural pebbles or gravels, recycled concrete, PC ordinary Portland cement, coarse sand and water. The ratio of the PC ordinary Portland cement tothe coarse sand to the water is 500 to 479 to 190. The contents of the natural pebbles or gravels and the recycled concrete content are 1231 and 0 or 923.25 and 307.75 or 615.5 and 615.5 or 307.75 and 923.25 respectively. The concrete is arranged in the steel pipe. One to three FRP layers wrap the steel pipe. Waste concrete is directly utilized and simply processed and is used for coarse aggregate of the concrete according to a certain replacement rate. Therefore, the environmental pressure can be reduced, and the waste concrete can be also turned into wealth to save the costs.
Description
Technical field
The present invention relates to frp steel tube regeneration concrete is and in particular to a kind of frp steel tube regeneration concrete short column.
Background technology
At present, there is no this new component of frp steel tube regeneration concrete component, similar product is simple frp
With the combination of concrete, it is not bound with steel pipe.Or frp and concrete filled steel tube, without reference to regeneration concrete.
Content of the invention
The present invention is directed to the problems referred to above, there is provided a kind of frp steel tube regeneration concrete short column.
The technical solution used in the present invention is: a kind of frp steel tube regeneration concrete short column, including frp layer, seamless steel pipe,
Natural cobble or rubble, regeneration concrete, pc Portland cement, coarse sand, water；Pc Portland cement therein,
Coarse sand, the ratio of water are 500:479:190；Natural cobble therein or rubble, regeneration concrete content be respectively as follows: 1231,
0；Or 923.25,307.75；615.5、615.5；307.75、923.25；Described concrete is arranged on steel duct；Described frp
Layer is wrapped in outside steel pipe for 1-3 layer.
Further, described natural cobble or rubble, regeneration concrete, pc Portland cement, coarse sand, water are made
Concrete be 2 4mm through hand breaking particle diameter granule.
Further, the axial compressive performance method of testing of described frp steel tube regeneration concrete short column, including following
Step:
S1, experiment material prepares；
S2, the making of steel pipe；
S3, the making of regeneration concrete, pours and maintenance；
S4, the polishing of steel pipe；
The stickup of s5, frp reinforcement material；
The mensure of s6, frp, the stickup of foil gauge and service behaviour.
Further, described step s1 particularly as follows:
The stock of experiment includes: frp reinforcement material, epoxy resin ab glue, seamless steel pipe, discarded concrete, pc
Portland cement, sand, water, the punching block of concrete sample make, and the aid when test specimen is processed.
Further, described step s2 particularly as follows:
The seamless steel pipe processed from workshop is cut into, according to the requirement of design, the rule that length is 270mm, 350mm
Lattice, necessarily require during cutting bottom steel pipe smooth, in case test specimen cause in axial compression bias.
Further, described step s3 particularly as follows:
The making of regeneration concrete: it is first to claim that the regeneration concrete of making carries out making specific flow process according to table two data
Take appropriate coarse aggregate to pour in blender, weigh a certain amount of cement and pour in blender, weigh a certain amount of coarse sand and pour into
In blender, after the water pouring a part into stirs 45 seconds, pour whole water into, the mobility of the concrete so made,
Workability, the slump are relatively good, and will not produce dust in stirring；
The pouring of regeneration concrete: in steel pipe during cast concrete, first steel pipe is erected in template, fills from top
Enter, mix is once loaded steel pipe, application spatula during charging plugs and pounds along steel pipe；And make concrete batching system exceed die trial mouth；
After steel pipe righting, start around steel pipe, vibrations assume cement mortar to mix surface, vibration processes must not cross to shake；
During vibration, steel pipe must not have any beating；After vibration terminates, retain TOC and be slightly above steel tube section, make coagulation simultaneously
Before native standard specimen should first by die trial wash clean, and die trial inner surface apply a thin layer mineral grease or other not with concrete
The releasing agent reacting；Mix is once loaded die trial, charging is that application spatula plugs and pounds along die wall；And so that concrete is mixed and stirred
Thing exceeds die trial mouth；Start around punching block, vibrations assume cement mortar to mix surface, must not cross to shake；Try during vibration
Mould must not have any beating；After vibration terminates, unnecessary mix is scraped off along die trial edge with trowel, and surface is floating；
After the test specimen of the maintenance criteria of regeneration concrete is according to the design specification maintenance at normal temperatures 28 days of concrete, supporting
It is wrapped in the surface of steel tube regeneration concrete sample using wet cloth during shield.
Further, described step s4 particularly as follows:
Originally there is a certain amount of rust and be difficult to paste, therefore, to steel when viscous frp reinforcement material in the surface of steel pipe
Being polished in the surface of pipe, is wiped with fine sandpaper after polishing, uses alcohol wipe and dry in the sun after wiping.
Further, described step s5 particularly as follows:
The winding parcel of frp, haves mercy on to have built in concrete and after 28 days, steel pipe is polished, carry out frp to steel pipe and twine
Around parcel；Before the winding carrying out frp, cutting should be carried out to frp, due to a diameter of 89mm of steel tube regeneration concrete short column and
100mm, Zhou Changwei 279.5mm, for the frp of two-layer, the length of needs is 559mm it is contemplated that to during frp winding, needing in end
Overlapped, reinforced specification according to frp, lap-joint's length is 100mm, therefore the test specimen of two-layer, frp is needed the length of cutting to be
659mm, takes 660mm, in the same manner, one layer of test specimen, the length needing frp is 380mm；
After frp cutting is complete, epoxide-resin glue is weighed in the ratio that ab group is divided into 2:1；During parcel, by epoxy resin
Fiber cloth is smeared uniformly, in layer extruding parcel, ensure that steel pipe and fiber cloth are pasted intact；After having pasted, will try
Part is placed in totally smooth oil and rents, and carries out fixation in frp end, prevents end from boning loosely, when causing axial compression test,
Frp end first occurs bond-slip to destroy；Test specimen has wrapped up when carrying out maintenance, is sealed with epoxide-resin glue in end, prevents
What sealing divided scatters and disappears；Because glue is smeared uneven, after frp winds with one circuit along steel pipe ring, surface of test piece is irregular；?
After having wrapped up fiber cloth, wound with one circuit with having certain thickness plastic sheeting ring along in the middle part of steel pipe, treat that epoxy resin is gelled
Gu after, then thin film is torn, when ensureing to paste foil gauge, surface of test piece is smooth；In addition, frp is conductive material, this circle
Glue can play insulating effect.
Further, described step s6 particularly as follows:
The stickup of frp foil gauge: this test strain gauge adhesion is at the middle part of frp；When pasting foil gauge, in the middle part of test specimen
Even curface, removes dust, impurity with alcohol wipe；Carry out labelling and respectively paste 4 in the ring of fiber cloth, vertical setting-out
Foil gauge, must not have hollowing, bubble between foil gauge and measured object；Dry in the sun after treating strain gauge adhesion well a little should with soldering
Become piece and extraction wire is fixed on terminal, with the resistance measurement to foil gauge for the ohmmeter, resistance is 120.2 ± 0.170 ω, with
When wire is numbered.
Advantages of the present invention:
The present invention directly simply processed using discarded concrete after according to certain Replacement rate, for concrete
Coarse aggregate, so gather materials on the spot and not only can mitigate the pressure of environment, and discarded concrete is turned waste into wealth saving
Cost；
The present invention is by the primary structure member setup parameter directly related with engineering, so more can directly draw science
Data, Guide to Use practical activity；
The fire resistance that the present invention not only can change steel using the frp new material of high intensity is poor, corrosion-prone feature
The ultimate bearing capacity of component can also be improved outward, change the ductility of component, so that the bearing capacity of component is more improved.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.
Fig. 1 is a kind of axial compressive performance method of testing flow chart of frp steel tube regeneration concrete short column of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
A kind of frp steel tube regeneration concrete short column, mixed including frp layer, seamless steel pipe, natural cobble or rubble, regeneration
Solidifying soil, pc Portland cement, coarse sand, water；Pc Portland cement therein, coarse sand, the ratio of water are 500:479:
190；Natural cobble therein or rubble, regeneration concrete content are respectively as follows: 1231,0；Or 923.25,307.75；615.5、
615.5；307.75、923.25；Described concrete is arranged on steel duct；Described frp layer is wrapped in outside steel pipe for 1-3 layer.
The concrete that described natural cobble or rubble, regeneration concrete, pc Portland cement, coarse sand, water are made
Be be 2 4mm through hand breaking particle diameter granule.
With reference to Fig. 1, the axial compressive performance method of testing of frp steel tube regeneration concrete short column as shown in Figure 1, including with
Lower step:
S1, experiment material prepares；
S2, the making of steel pipe；
S3, the making of regeneration concrete, pours and maintenance；
S4, the polishing of steel pipe:
The stickup of s5, frp reinforcement material:
The stickup of s6, frp foil gauge and the mensure of service behaviour.
Described step s1 particularly as follows:
The stock of experiment includes: frp reinforcement material, epoxy resin ab glue, seamless steel pipe, discarded concrete, pc
Portland cement, sand, water, the punching block of concrete sample make, and the aid when test specimen is processed.
Described step s2 particularly as follows:
The seamless steel pipe processed from workshop is cut into, according to the requirement of design, the rule that length is 270mm, 350mm
Lattice, necessarily require during cutting bottom steel pipe smooth, in case test specimen cause in axial compression bias.
Described step s3 particularly as follows:
The making of regeneration concrete: it is first to claim that the regeneration concrete of making carries out making specific flow process according to table two data
Take appropriate coarse aggregate to pour in blender, weigh a certain amount of cement and pour in blender, weigh a certain amount of coarse sand and pour into
In blender, after the water pouring a part into stirs 45 seconds, pour whole water into, the mobility of the concrete so made,
Workability, the slump are relatively good, and will not produce dust in stirring；
The pouring of regeneration concrete: in steel pipe during cast concrete, first steel pipe is erected in template, fills from top
Enter, mix is once loaded steel pipe, application spatula during charging plugs and pounds along steel pipe；And make concrete batching system exceed die trial mouth；
After steel pipe righting, start around steel pipe, vibrations assume cement mortar to mix surface, vibration processes must not cross to shake；
During vibration, steel pipe must not have any beating；After vibration terminates, retain TOC and be slightly above steel tube section, make coagulation simultaneously
Before native standard specimen should first by die trial wash clean, and die trial inner surface apply a thin layer mineral grease or other not with concrete
The releasing agent reacting；Mix is once loaded die trial, charging is that application spatula plugs and pounds along die wall；And so that concrete is mixed and stirred
Thing exceeds die trial mouth；Start around punching block, vibrations assume cement mortar to mix surface, must not cross to shake；Try during vibration
Mould must not have any beating；After vibration terminates, unnecessary mix is scraped off along die trial edge with trowel, and surface is floating；
After the test specimen of the maintenance criteria of regeneration concrete is according to the design specification maintenance at normal temperatures 29 days of concrete, supporting
It is wrapped in the surface of steel tube regeneration concrete sample using wet cloth during shield.
Described step s4 particularly as follows:
Originally there is a certain amount of rust and be difficult to paste, therefore, to steel when viscous frp reinforcement material in the surface of steel pipe
Being polished in the surface of pipe, is wiped with fine sandpaper after polishing, uses alcohol wipe and dry in the sun after wiping.
Described step s5 particularly as follows:
The winding parcel of frp, haves mercy on to have built in concrete and after 28 days, steel pipe is polished, carry out frp to steel pipe and twine
Around parcel；Before the winding carrying out frp, cutting should be carried out to frp, due to a diameter of 89mm of steel tube regeneration concrete short column and
100mm, Zhou Changwei 279.5mm, for the frp of two-layer, the length of needs is 559mm it is contemplated that to during frp winding, needing in end
Overlapped, reinforced specification according to frp, lap-joint's length is 100mm, therefore the test specimen of two-layer, frp is needed the length of cutting to be
659mm, takes 660mm, in the same manner, one layer of test specimen, the length needing frp is 380mm；
After frp cutting is complete, epoxide-resin glue is weighed in the ratio that ab group is divided into 2:1；During parcel, by epoxy resin
Fiber cloth is smeared uniformly, in layer extruding parcel, ensure that steel pipe and fiber cloth are pasted intact；After having pasted, will try
Part is placed in totally smooth oil and rents, and carries out fixation in frp end, prevents end from boning loosely, when causing axial compression test,
Frp end first occurs bond-slip to destroy；Test specimen has wrapped up when carrying out maintenance, is sealed with epoxide-resin glue in end, prevents
What sealing divided scatters and disappears；Because glue is smeared uneven, after frp winds with one circuit along steel pipe ring, surface of test piece is irregular；?
After having wrapped up fiber cloth, wound with one circuit with having certain thickness plastic sheeting ring along in the middle part of steel pipe, treat that epoxy resin is gelled
Gu after, then thin film is torn, when ensureing to paste foil gauge, surface of test piece is smooth；In addition, frp is conductive material, this circle
Glue can play insulating effect.
Described step s6 particularly as follows:
The stickup of frp foil gauge: this test strain gauge adhesion is at the middle part of frp；When pasting foil gauge, in the middle part of test specimen
Even curface, removes dust, impurity with alcohol wipe；Carry out labelling and respectively paste 4 in the ring of fiber cloth, vertical setting-out
Foil gauge, must not have hollowing, bubble between foil gauge and measured object；Dry in the sun after treating strain gauge adhesion well a little should with soldering
Become piece and extraction wire is fixed on terminal, with the resistance measurement to foil gauge for the ohmmeter, resistance is 120.2 ± 0.170 ω, with
When wire is numbered.
The purpose of the axial compressive performance method of testing of frp steel tube regeneration concrete short column is:
1st, when slenderness ratio, parcel mode, the frp number of plies are identical, recycled coarse aggregate contents mix to frp steel tube regeneration for analysis
Solidifying earth pillar curve and the impact of bearing capacity.
2nd, when recycled coarse aggregate contents, slenderness ratio, the frp number of plies are identical, parcel mode is mixed to frp steel tube regeneration for analysis
The curve of solidifying earth pillar and the impact of bearing capacity.
3rd, when recycled coarse aggregate contents, parcel mode, the frp number of plies are identical, slenderness ratio is mixed to frp steel tube regeneration for analysis
The curve of solidifying earth pillar and the impact of bearing capacity.
4th, when recycled coarse aggregate contents, slenderness ratio, parcel mode are identical, the parcel number of plies of frp is to frp steel pipe for analysis
The curve of regeneration concrete post and the impact of bearing capacity.
Testing scheme is as follows:
The design of frp steel tube regeneration concrete short column
Test parameter table:
C30 regeneration concrete tests Stock allotment right table
The test process of frp steel tube regeneration concrete cylindrical and interpretation of result:
F-1 post:
Just having started component does not have phenomenon, continues to increase with load, is 185kn in axle power, sends steel tube surface and frp tree
Clear and melodious the sound of fat strip off, power continues to increase to 261kn, and at the 10cm of top, steel pipe external drum occurs flexing, outside carbon fiber
Outer start to collapse out, in 291kn, bottom steel pipe starts external drum to power, and steel pipe flexing phenomenon continues to strengthen, power 359kn, bottom about 10cm
Place's steel pipe starts external drum and flexing phenomenon occurs, and original flexing phenomenon is obvious further, power 367kn, starts to occur in the middle part of steel pipe
External drum, bottom flexing is more violent, power 374kn, and top steel pipe occurs bent external drum in the wrong, and fiber cloth has more by plucking, external manifestations
Become apparent from, load continues to increase, power 403kn, the sound that steel pipe bursts apart, and carbon fiber is pulled off, and bent phenomenon in the wrong is more
Substantially, power 449kn, whole steel pipe deforms, and fiber cloth has more and collapses out, power 494kn, and steel pipe bottom integrally increases, whole steel
Guan Yuecheng " c " type, now and send the sound that steel pipe bursts apart, power drastically declines.
F-2 post:
When just starting, component does not have obvious phenomenon, and when axle power reaches 375kn, at the 3cm of top, steel pipe starts external drum, and has
Steel pipe and the sound of resin strip off, in power 386kn, center steel pipe starts external drum, and with clear and melodious sound,
Top flexing phenomenon becomes apparent from, and in power 390kn, top steel pipe starts external drum, and middle part flexing phenomenon becomes apparent from, power 396kn
When bottom 7cm at steel pipe external drum, the phenomenon at the 5cm of middle part becomes apparent from, the bright phenomenon of bursting apart of fiber cloth at 5cm, power 401kn, under
Steel pipe external drum at portion, bloats outward about 0.5cm, power 421kn, middle part steel pipe entirety external drum about 0.5cm, carbon cloth at the 7cm of bottom
Collapse out, also collapse out in the middle part of steel pipe, have the sound of loud noise to send simultaneously, concrete leaks outside, power drastically declines.
F-3 post:
Initially not obvious phenomenon, when power is 364kn, starts external drum in the middle part of steel pipe, and has sound, power
383kn, upper end starts external drum, and the carbon fiber on top is stripped, and the flexing phenomenon at middle part becomes apparent from, power 401kn, and lower end starts
External drum, carbon fiber starts external drum, and flexing phenomenon is obvious further, power 413kn, steel pipe cracking at the 8cm of bottom, and carbon fiber is drawn
Disconnected, leak outside steel pipe, and concrete powder leaks outside, and has loud noise to send, it is all deformed that power drastically declines whole steel pipe.
F-4 post:
Initially not obvious phenomenon, when power is 195kn, steel pipe external drum at the 5cm of bottom, power 214kn, at the 5cm of top
Steel pipe external drum, power 219kn, external drum phenomenon becomes apparent from, bottom steel pipe external drum about 0.5cm, and flexing phenomenon is obvious further, power
227kn, middle part carbon fiber is furnished with the phenomenon broken, and top steel pipe has the bent phenomenon in the wrong of external drum, and at two each 5cm, phenomenon is brighter
Aobvious, the carbon cloth at the 5cm of top is broken, power 230kn, and bottom external drum phenomenon becomes apparent from, and has carbon cloth to break, middle part
Carbon cloth is broken, power 238kn, and whole steel pipe about becomes " c " type, and external drum flexing phenomenon becomes apparent from, and the steel pipe of bottom also occurs
External drum flexing, power 239kn, the carbon cloth on top is broken, the steel pipe entirety external drum of more than epimere 5cm, and flexing phenomenon is brighter
Aobvious.
F-5 post:
Initially not obvious phenomenon, when power is 154kn, steel pipe and resin have clear and melodious the sound of strip off to send,
Power 167kn, bottom about 1cm or 5cm, steel pipe starts to bloat, and with sound, power 181kn, starts to rouse at the about 1cm of bottom
Go out, bent phenomenon in the wrong occurs, and with clear and melodious sound, middle part bloats, bottom flexing phenomenon becomes apparent from, and 199kn bloats more
Aggravation is strong, and now and with sound, power 208kn, overall bottom north has carbon fiber local to break, and top bloats, and has steel
The sound of pipe pressure break, middle part bloats, and flexing phenomenon is obvious further, and power 228kn bloats at the about 5cm of top, middle
Carbon fiber is broken, and whole steel pipe is all deformed, and the flexing phenomenon of bottom becomes apparent from, power 235kn, and the whole external drum of whole steel pipe is about
0.5cm, carbon cloth many places are broken, and flexing phenomenon is obvious further, power 237kn, and carbon fiber is broken at about 5cm up and down, leakage
Steel pipe, power 238kn, the flexing phenomenon of whole component becomes apparent from.
F-6 post:
Initially not obvious phenomenon, when power 407kn, upper end starts external drum, and has the sound of steel pipe and resin strip off,
Power 424kn, upper end external drum continues, and by plucking, power 427kn, the carbon fiber of upper end is pulled off carbon cloth, and leak outside steel pipe, flexing
Phenomenon is obvious further, power 437kn, and carbon fiber rent extends to two ends, and the sound that has with steel pipe rupture, power 467kn,
The carbon fiber of many places is pulled off, power 478kn, and the carbon fiber of lower end is pulled off, and leak outside steel pipe, and the sound with steel pipe rupture,
Flexing phenomenon is obvious further, power 494kn, and carbon fiber many places are pulled off, and steel pipe ftractures, and concrete powder leaks outside, and huge with a sound
Ring, power drastically declines.
F-7 post:
Just it has been started without obvious phenomenon, when power 210kn, the carbon fiber at middle part has strip off phenomenon, when power 320kn, in
Portion starts external drum, and bottom starts external drum, and has sound to send, power 395kn, and, by plucking, flexing is existing for the carbon cloth at middle part
As becoming apparent from, power 397kn, start external drum at the about 8cm of middle and upper part, and the carbon cloth of upper band, by plucking, is locally pulled off, power
409kn, the carbon fiber of bottom is stripped, and the local carbon fiber of external drum is by plucking, and flexing phenomenon is obvious further, power 416kn,
Top starts external drum, and the carbon fiber on top, by many places plucking, has the sound that steel tube surface is split, power 425kn, whole steel pipe presents
" c " type, bottom bulk expansion 1cm, the carbon fiber of bottom is pulled off, and flexing phenomenon is obvious further, power 461kn, whole steel pipe
All external drum deformation, by many places plucking, bent phenomenon of bending is obvious further, power 476kn, and the carbon cloth on top is shelled for carbon cloth
Open, flexing phenomenon is obvious further.
F-8 post:
Initially not obvious phenomenon, when power is 310kn, bloats phenomenon at the 5cm of top, and with clear and melodious
The sound of steel pipe and resin strip off, power 317kn, at the 5cm of bottom, middle part all bloat, the flexing phenomenon on top is more
Substantially, power 338kn, top steel pipe starts to bloat, and the phenomenon that the steel pipe carbon fiber at the 5cm of bottom is furnished with plucking occurs, and companion
There are sound, power 351kn, the steel pipe of bottom starts external drum, and above song bends phenomenon further substantially, and with squeak
Sound, power 367kn, there is carbon fiber hairiness phenomenon at middle part, and whole steel pipe is all deformed, and bent phenomenon of bending becomes apparent from, now with sound
Sound, power 381kn, a band carbon cloth of bottom launches, and top, middle part, bottom have many places carbon cloth to break, power 415kn, under
The carbon fiber in portion has 5cm length to be stripped, and whole steel pipe occurs serious flexing phenomenon, and the sound splitting with steel pipe
437kn, carbon fiber bottom is pulled off, and steel pipe becomes " c " type.
F-9 post:
Initially not obvious phenomenon with the increase of axle power, when power is 368kn, external drum at the 4cm of bottom, power 380kn,
External drum at middle part, top about 2cm, bottom is bent to bend phenomenon further substantially, and the carbon fiber of bottom one band has plucking phenomenon, power
384kn, bloats about 0.3cm outside middle part, and middle part one carries carbon fiber by plucking, and flexing phenomenon is obvious further, and power 393kn is whole
Individual steel pipe deforms, and assumes the thin shape in middle thick two, and the carbon cloth at middle part is stripped.Power 400kn, middle carbon is fine
Wei Bu is pulled off, and the carbon cloth on top is pulled off, and flexing phenomenon is obvious further, power 432kn, and the carbon fiber of bottom is drawn
Disconnected, flexing phenomenon becomes apparent from, and whole steel pipe becomes " c " type.
F-10 post:
When power is 368kn, middle part starts external drum, power 387kn, and top starts external drum, and the outside flexing phenomenon in middle part is brighter
Aobvious, now, and with clear and melodious sound, power 400kn, top continues to bloat, and middle part bloats about 0.3cm, and the carbon at middle part is fine
Dimension is stripped, and has by the phenomenon of plucking, and middle flexing phenomenon becomes apparent from, external drum about 0.35cm, power 381kn, bottom
Steel pipe starts to bloat, and top, the flexing phenomenon at middle part become apparent from, and the carbon cloth on top is stripped, and the minority carbon at middle part is fine
Wei Bu is pulled off, and spills steel pipe, and whole steel pipe deforms, flexing phenomenon clearly, steel pipe quilt at the about 10cm of top
Pressure break, concrete powder leaks outside, and carbon cloth is pulled off, and simultaneously with a sound loud noise, power drastically declines.
F-11 post:
When power is 370kn, at the about 12cm of top, start external drum, and the carbon cloth at middle part is pulled off, power 380kn, middle part,
Start external drum, top flexing phenomenon is obvious further, power 388kn, and top starts to bloat, the carbon fiber of bottom at the about 12cm of bottom
Cloth is pulled off, and bloats about 0.36cm, and flexing phenomenon is obvious further, power 392kn, and the steel pipe of bottom starts external drum, top
Carbon cloth is pulled off, and flexing phenomenon becomes apparent from, and whole steel pipe substantially deforms, power 395kn, and the carbon fiber many places at middle part are drawn
Disconnected, and have sound, the flexing phenomenon of whole steel pipe is clearly.
F-12 post:
When power is 218kn, middle part starts to bloat, and has sound to send, and starts to bloat, power at the about 12cm of bottom
233kn, starts to bloat at the about 12cm of top, has sound to send, and significantly distorting occurs in middle part, and the carbon fiber at middle part is pulled off
Bend, flexing as becoming apparent from, power 276kn, middle part, top, the original phenomenon that bloats in bottom become apparent from, and about bloat 0.8cm, in
Portion occurs significantly to distort, and now, there are steel pipe pressure break sound, power 352kn in surface, and the carbon fiber at middle part is drawn by many places
Disconnected, the song at middle part is bent phenomenon and is become apparent from, power 360kn, the beginning external drum about 1cm of bottom at, and carbon fiber is by plucking, original song
Phenomenon in the wrong is obvious further, and middle carbon fiber is opened, and the carbon fiber at middle part is peeled off, and the steel pipe at middle part is by pressure break, concrete powder
Leakage, power drastically declines.
F-13 post:
When power is 399kn, lower tip starts external drum, and has sound, power 382kn, middle part external drum, and bottom carbon is fine
Wei Bu is become apparent from by plucking, external drum flexing phenomenon, power 376kn, starts external drum at the about 2cm of top, and middle part carbon fiber is furnished with and draws
Hair phenomenon, flexing phenomenon becomes apparent from, power 379kn, and by plucking, the flexing phenomenon at middle part becomes apparent from top carbon cloth, whole
Individual steel pipe deforms, and top, middle part, the carbon fiber of bottom are furnished with and are pulled off, power 393kn, and external drum about 0.4cm in middle part is whole
The flexing phenomenon of individual steel pipe becomes apparent from, and the carbon cloth of bottom is peeled off, power 436kn, and the flexing phenomenon of whole post is brighter
Aobvious, carbon cloth is broken by many places.
F-14 post:
Just it has been started without obvious phenomenon, when power is 240kn, bottom starts external drum, and carbon cloth local is broken, power
329kn, starts external drum at the about 12cm of top, the song of bottom bends phenomenon further substantially, and power 339kn starts outer at the about 5cm of bottom
Drum, flexing phenomenon is obvious further, and the carbon cloth of bottom is broken, and the carbon fiber at middle part is furnished with the phenomenon of strip off, power 326kn,
The carbon cloth strip off at middle part there are about 4cm length, and flexing phenomenon becomes apparent from, and whole post deforms, in " c " type, power 347kn,
The carbon cloth of bottom is broken by insertion, the bottom entirety external drum about 1cm of steel pipe, and flexing phenomenon becomes apparent from.
F-15 post:
Just it has been started without obvious phenomenon, when power is 490kn, top about 8cm starts external drum, and has steel pipe to collapse
The sound splitting, power 498kn, start external drum at the 12cm of top, and have sound, the song on top bends phenomenon further substantially,
Power 574kn, at middle leukorrhagia 2cm, carbon cloth is broken and be there are about 3cm, and the flexing phenomenon on top becomes apparent from, and leak outside steel pipe power
625kn, middle part starts external drum, and the carbon cloth at middle leukorrhagia 2cm is become apparent from by plucking, the flexing phenomenon on top, power
665kn, bottom starts external drum, and the carbon cloth at middle part is pulled off, and leak outside steel pipe, and has the sound of steel pipe rupture, and steel pipe breaks
Split, leak outside concrete powder, whole steel pipe all deforms, power 302kn, and flexing phenomenon becomes apparent from, and steel pipe breach is got over
Come bigger, carbon cloth many places are pulled off, and start to extend to two ends, power drastically declines.
F-16 post:
Initially not obvious phenomenon, continues to increase to 518kn with axle power, and middle part starts external drum, and have
Sound, power 552kn, top starts external drum, and carbon cloth starts plucking, and middle part flexing phenomenon becomes apparent from, with sound,
Power 602kn, bottom starts to bloat, and with sound, flexing phenomenon becomes apparent from, power 606kn, and the carbon fiber of bottom is furnished with stripping
The phenomenon falling, middle part, the song on top are bent phenomenon and are become apparent from, and, by plucking, power 641kn, whole steel pipe is complete for the carbon cloth of bottom
There is external drum in portion, there are plucking, power 675kn in carbon cloth many places, and the carbon cloth on top is stripped, the carbon cloth of former plucking
Break.
According to experiment, the content of regeneration aggregate is (25) -- 50 natural cobbles or rubble, regeneration concrete content are respectively
For: 1231,0；Or 923.25,307.75；
It is optimum efficiency that 25 optimal choice frp wrap up three layers
Frp steel tube regeneration concrete be regeneration concrete, steel pipe and tensile strength are ten times of steel tri- kinds of materials of frp
The combined member combining, embodies the characteristic of three kinds of nonlinear materials in the presence of load, draws frp steel tube regeneration coagulation
Soil is a new component, has a high capacity, the features such as construction is simple.Can use with the environment such as high level, seashore in.
The present invention directly simply processed using discarded concrete after according to certain Replacement rate, for concrete
Coarse aggregate, so gather materials on the spot and not only can mitigate the pressure of environment, and discarded concrete is turned waste into wealth saving
Cost；
The present invention is by the primary structure member setup parameter directly related with engineering, so more can directly draw science
Data, Guide to Use practical activity；
The fire resistance that the present invention not only can change steel using the frp new material of high intensity is poor, corrosion-prone feature
The ultimate bearing capacity of component can also be improved outward, change the ductility of component, so that the bearing capacity of component is more improved.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement made etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of frp steel tube regeneration concrete short column is it is characterised in that include frp layer, seamless steel pipe, natural cobble or broken
Stone, regeneration concrete, pc Portland cement, coarse sand, water；Pc Portland cement therein, coarse sand, the ratio of water are
500:479:190；Natural cobble therein or rubble, regeneration concrete content are respectively as follows: 1231,0；Or 923.25,
307.75；615.5、615.5；307.75、923.25；Described concrete is arranged on steel duct；Described frp layer is 1-3 layer bag
It is rolled in outside steel pipe.
2. frp steel tube regeneration concrete short column according to claim 1 it is characterised in that described regeneration concrete be through
Hand breaking particle diameter is the granule of 2 4mm.
3. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In comprising the following steps:
S1, experiment material prepares；
S2, the making of steel pipe；
S3, the making of regeneration concrete, pours and maintenance；
S4, the polishing of steel pipe；
The stickup of s5, frp reinforcement material；
The mensure of s6, frp, the stickup of foil gauge and service behaviour.
4. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In, described step s1 particularly as follows:
The stock of experiment includes: frp reinforcement material, epoxy resin ab glue, seamless steel pipe, discarded concrete, pc are common
Portland cement, sand, water, the punching block of concrete sample make, and the aid when test specimen is processed.
5. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In, described step s2 particularly as follows:
The seamless steel pipe processed from workshop is cut into, according to the requirement of design, the specification that length is 270mm, 350mm, cuts
Necessarily require when cutting bottom steel pipe smooth, in case test specimen cause in axial compression bias.
6. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In, described step s3 particularly as follows:
The making of regeneration concrete: the regeneration concrete of making according to table two data carry out making specific flow process be first weigh suitable
The coarse aggregate of amount is poured in blender, weighs a certain amount of cement and pours in blender, weighs a certain amount of coarse sand and pour stirring into
In machine, after the water pouring a part into stirs 45 seconds, pour whole water into, the mobility of the concrete so made and easily
Property, the slump relatively good, and stirring when will not produce dust；
The pouring of regeneration concrete: in steel pipe during cast concrete, first steel pipe is erected in template, pours into from top, will
Mix once loads steel pipe, and application spatula during charging plugs and pounds along steel pipe；And make concrete batching system exceed die trial mouth；By steel pipe
After righting, start around steel pipe, vibrations assume cement mortar to mix surface, vibration processes must not cross to shake；During vibration
Steel pipe must not have any beating；After vibration terminates, retain TOC and be slightly above steel tube section, make concrete standard simultaneously
Should be first by die trial wash clean before test specimen, and the inner surface in die trial applies a thin layer mineral grease or other are not occurred instead with concrete
The releasing agent answered；Mix is once loaded die trial, charging is that application spatula plugs and pounds along die wall；And so that concrete batching system is exceeded
Die trial mouth；Start around punching block, vibrations assume cement mortar to mix surface, must not cross to shake；During vibration, die trial must not
There is any beating；After vibration terminates, unnecessary mix is scraped off along die trial edge with trowel, and surface is floating；
After the test specimen of the maintenance criteria of regeneration concrete is according to the design specification maintenance at normal temperatures 28 days of concrete, in curing period
Between be wrapped in the surface of steel tube regeneration concrete sample using wet cloth.
7. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In, described step s4 particularly as follows:
Originally there is a certain amount of rust and be difficult to paste, therefore, to steel pipe when viscous frp reinforcement material in the surface of steel pipe
Being polished in surface, is wiped with fine sandpaper after polishing, uses alcohol wipe and dry in the sun after wiping.
8. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In, described step s5 particularly as follows:
The winding parcel of frp, haves mercy on to have built in concrete and after 28 days, steel pipe is polished, steel pipe is carried out with the winding bag of frp
Wrap up in；Before the winding carrying out frp, cutting should be carried out to frp, due to a diameter of 89mm and 100mm of steel tube regeneration concrete short column,
Zhou Changwei 279.5mm, for the frp of two-layer, the length of needs is 559mm it is contemplated that to during frp winding, needing to carry out in end
Overlap joint, reinforces specification according to frp, and lap-joint's length is 100mm, therefore the test specimen of two-layer, it is 659mm that frp needs the length of cutting,
Take 660mm, in the same manner, one layer of test specimen, the length needing frp is 380mm；
After frp cutting is complete, epoxide-resin glue is weighed in the ratio that ab group is divided into 2:1；During parcel, by epoxy resin in fibre
Smear uniformly on Wei Bu, in layer extruding parcel, ensure that steel pipe and fiber cloth are pasted intact；After having pasted, test specimen is put
Rent in totally smooth oil, and carry out fixation in frp end, prevent end from boning loosely, when causing axial compression test, frp end
Portion first occurs bond-slip to destroy；Test specimen has wrapped up when carrying out maintenance, is sealed with epoxide-resin glue in end, prevents moisture
Scatter and disappear；Because glue is smeared uneven, after frp winds with one circuit along steel pipe ring, surface of test piece is irregular；Wrapping up
After fiber cloth, wound with one circuit with having certain thickness plastic sheeting ring along in the middle part of steel pipe, after epoxide-resin glue solidification,
Again thin film is torn, when ensureing to paste foil gauge, surface of test piece is smooth；In addition, frp is conductive material, and this circle glue is permissible
Play insulating effect.
9. the axial compressive performance method of testing of frp steel tube regeneration concrete short column according to claim 1, its feature exists
In, described step s6 particularly as follows:
The stickup of frp foil gauge: this test strain gauge adhesion is at the middle part of frp；When pasting foil gauge, smooth in the middle part of test specimen
Surface, with alcohol wipe remove dust, impurity；Carry out labelling and respectively paste 4 strains in the ring of fiber cloth, vertical setting-out
Piece, must not have hollowing, bubble between foil gauge and measured object；After treating strain gauge adhesion well dry in the sun a little with soldering by foil gauge
It is fixed on terminal with drawing wire, with the resistance measurement to foil gauge for the ohmmeter, resistance is 120.2 ± 0.170 ω, simultaneously right
Wire is numbered.
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| CN106932250A (en) * | 2017-03-28 | 2017-07-07 | 湖南城市学院 | A kind of regeneration concrete shearing resistance beam |
| CN107144467A (en) * | 2017-07-11 | 2017-09-08 | 南京工程学院 | A kind of preparation method of rectangular steel pipe broken brick aggregate regeneration concrete test specimen |
| CN108277925A (en) * | 2018-01-26 | 2018-07-13 | 广东工业大学 | A kind of steel core concrete column and its manufacturing method |
| CN108444892A (en) * | 2018-05-20 | 2018-08-24 | 郑州大学 | A kind of impervious sample production method of the soil cement of simplicity |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20170118 |