CN206681258U - A kind of highly energy-consuming concrete connecting-beam of built-in mild steel - Google Patents
A kind of highly energy-consuming concrete connecting-beam of built-in mild steel Download PDFInfo
- Publication number
- CN206681258U CN206681258U CN201621038010.5U CN201621038010U CN206681258U CN 206681258 U CN206681258 U CN 206681258U CN 201621038010 U CN201621038010 U CN 201621038010U CN 206681258 U CN206681258 U CN 206681258U
- Authority
- CN
- China
- Prior art keywords
- mild steel
- steel plate
- stirrup
- coupling beam
- muscle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910001209 Low-carbon steel Inorganic materials 0.000 title claims abstract description 82
- 239000004567 concrete Substances 0.000 title claims abstract description 48
- 230000008878 coupling Effects 0.000 claims abstract description 87
- 238000010168 coupling process Methods 0.000 claims abstract description 87
- 238000005859 coupling reaction Methods 0.000 claims abstract description 87
- 210000003205 muscle Anatomy 0.000 claims abstract description 50
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 238000013016 damping Methods 0.000 claims abstract description 32
- 239000002986 polymer concrete Substances 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 26
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000010881 fly ash Substances 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 27
- 239000004568 cement Substances 0.000 description 26
- 239000004576 sand Substances 0.000 description 16
- 239000003638 chemical reducing agent Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000000654 additive Substances 0.000 description 8
- 239000013530 defoamer Substances 0.000 description 8
- 230000000996 additive effect Effects 0.000 description 7
- 239000002270 dispersing agent Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000000839 emulsion Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 229920005646 polycarboxylate Polymers 0.000 description 3
- 229920000570 polyether Polymers 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- SIDURXWHELGWNV-UHFFFAOYSA-N benzene;prop-1-ene;sodium Chemical compound [Na].CC=C.CC=C.CC=C.CC=C.C1=CC=CC=C1 SIDURXWHELGWNV-UHFFFAOYSA-N 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The utility model discloses a kind of highly energy-consuming concrete connecting-beam of built-in mild steel, including stress to indulge muscle（1）, stirrup（3）With the vertical muscle of construction（4）, the vertical muscle of stress of rectangular setting（1）Using the stirrup of end（3）It is fixed-type, the stirrup at both ends（3）The inside cavity of composition places mild steel plate（2）, mild steel plate（2）Both ends be separately fixed at the stirrup at both ends（3）On, construct vertical muscle（4）It is arranged on stress and indulges muscle（1）Between and be located at mild steel plate（2）Front and rear sides, the stirrup at both ends（3）Between also be provided with middle part stirrup（3）Muscle is indulged for fixing stress（1）With the vertical muscle of construction（4）；Said structure, which is placed in coupling beam template to pour using fiber reinforcement high-damping polymer concrete, can obtain required coupling beam.Shear-carrying capacity, ductility and the energy dissipation capacity of the utility model coupling beam are improved；Preferable globality can be kept under big displacement and big load action, Stiffness Deterioration is also postponed.
Description
Technical field
Coupling beam technical field is the utility model is related to, it is specifically a kind of to improve shear-carrying capacity and ductility and in earthquake
The highly energy-consuming concrete connecting-beam of the lower built-in mild steel with good energy consumption effect of effect.
Background technology
In skyscraper, coupling beam shear wall is highly resistant to caused by wind load and earthquake load and sheared.Make in earthquake
Under, coupling beam between wall limb can effective consumed energy, and very strong rigidity is provided for whole shear wall system.It is existing each
The situation of kind coupling beam is as follows：1）Normal concrete coupling beam：Ductility is poor, and concrete once enters plasticity, and bearing capacity declines rapidly,
Obvious fragility is shown under big shake, easy generation failure by shear, which produces, under curved scissors effect intersects diagonal crack, energy dissipation
Effect is poor；2）Diagonal member reinforced concrete coupling beam：The problem of failure by shear easily occurs for reply normal concrete coupling beam, in coupling beam
Diagonal diagonal bar is placed in inside, adds somewhat to the shearing strength and ductility of coupling beam, but anti-bending bearing capacity improves seldom, and
And difficulty of construction is larger when concrete connecting-beam width is smaller；3）Diamond pattern arrangement of reinforcement reinforced concrete coupling beamses：It can effectively improve small
The ductility of span-depth radio coupling beam, but and cost higher to construction requirement is higher, is not easy to promote；4）Steel reinforced concrete coupling beam：Shaped steel
Addition make it that coupling beam entirety ductility is preferable, but rigidity itself is larger, and wall limb ratio of rigidity is improper can make it that plastic hinge is preferential
Wall limb is resulted from, is unfavorable for coupling beam power consumption on the contrary；5）Band straight joint reinforced concrete coupling beamses：By increasing span-depth radio, significantly carry
The high ductility of coupling beam, but now the rigidity of coupling beam is reduced to original a quarter, have impact on the globality of Coupled Shear Wall；6）
Self-control connecting beam：Horizontal straight joint is set by coupling beam both ends, centre forms connecting key using plain concrete.The lower plain concrete connection of big shake
Key ftractures, and forms two coupling beams up and down, increase span-depth radio is to increase ductility, and required precision of the method for slot is higher, no
Beneficial to the popularization in Practical Project.
The content of the invention
The purpose of this utility model is the problem of presence for prior art, there is provided one kind improves shear-carrying capacity and ductility
And there is the highly energy-consuming concrete connecting-beam of the built-in mild steel of good energy consumption effect under geological process.
The purpose of this utility model solves by the following technical programs：
A kind of highly energy-consuming concrete connecting-beam of built-in mild steel, including stress are indulged muscle, stirrup and the vertical muscle of construction, its feature and existed
In：The stress of rectangular setting indulges muscle and uses the stirrup of end fixed-type, and the inside cavity that the stirrup at both ends is formed is placed
Mild steel plate, the both ends of mild steel plate are separately fixed on the stirrup at both ends, are constructed vertical muscle and are arranged between the vertical muscle of stress and are located at
The front and rear sides of mild steel plate, also the stirrup provided with middle part is used to fixing stress and indulges muscle and the vertical muscle of construction between the stirrup at both ends；
Said structure, which is placed in coupling beam template to pour using fiber reinforcement high-damping polymer concrete, can obtain required coupling beam.
Described mild steel plate is located at the middle part of coupling beam and the end both sides of mild steel plate are welded by the stirrup at spot welding and both ends
It is connected together.
The upper and lower surface of the mild steel plate is welded together by the stirrup at spot welding and middle part.
Described mild steel plate is H-shaped steel plate, and the thickness of mild steel plate is the 1/15-1/10 of coupling beam width, the both ends of mild steel plate
Highly no more than the housing depth of the stirrup composition at both ends to realize spot welding positioning, the miding level height of mild steel plate is mild steel plate
The 1/3-1/2 of end height.
The middle segment length of the mild steel plate is equal to the net span of coupling beam.
The length of described coupling beam embedment shear wall wall limb takes wall limb thickness and the higher value of deck-molding 1/2.
The material component of the fiber reinforcement high-damping polymer concrete includes：Cement, water, flyash, sand, polymer
Additive, fiber and high efficiency water reducing agent, defoamer, dispersant, wherein being cement in mass ratio：Water：Flyash：Sand=1：（0.45
~0.70）：（0.50~1.20）：（1.00~2.20）Cement, water, flyash, sand are selected, by cement and flyash quality dosage
7~16% choose polymeric additives, high efficiency water reducing agent is chosen by the 0.8~1.8% of cement and flyash quality dosage, by water
The 0.5%~1.2% of mud and flyash quality dosage chooses defoamer, by the 0.15~0.32% of cement and flyash quality dosage
Dispersant is chosen, fiber is PVA fibers, and PVA fibers are chosen by the 0.8%~2.5% of the cumulative volume of water, cement, flyash and sand；
Above-mentioned raw materials are matched somebody with somebody to postpone to stir in proportion and can obtain fiber reinforcement high-damping polymer concrete.
Described cement uses 42.5 grades of Portland cements of conch board P.O；Flyash uses I level flyash；Sand is adopted
With the common river sand that modulus of fineness is 1.6~2.2；Water uses density as 1.0g/cm3, meet《Concrete water standard》
（JGJ63-2006）It is required that ordinary tap water；Polymeric additive uses Carboxy emulsion or acrylate copolymer emulsion；It is fine
Dimension is using modulus of elasticity 42Gpa, the PVA fibers of draw ratio 7%；Dispersant uses neopelex；High efficiency water reducing agent is adopted
With the polycarboxylate water-reducer that water-reducing rate is 20~35%；Defoamer is using in tributyl phosphate, polyacrylate, silane copper polyethers
One kind.
The utility model has the following advantages compared with prior art：
Coupling beam of the present utility model is by indulging stirrup outside muscle and the vertical muscle of construction, vertical muscle, interior through the stress of prefabricated coupling beam
Mild steel plate in coupling beam is put as intensive aspect, fiber reinforcement high-damping polymer concrete as matrix, the coupling beam compared to
Traditional concrete connecting-beam, as a result of fiber reinforcement high-damping polymer concrete as matrix and built-in mild steel plate, make
The shear-carrying capacity and ductility for obtaining coupling beam are improved, and have good energy consumption effect under geological process.
Coupling beam of the present utility model acts on using fiber reinforcement high-damping polymer concrete, the bridge joint of PVA fibers
So that coupling beam during bearing load destroys, is shown the characteristics of " multiple crack growth " and " strain hardening ", every
Microcrack is no more than 100um, therefore the bearing capacity of coupling beam can be improved using fiber reinforcement high-damping polymer concrete, mitigates
The cracking of coupling beam concrete peels off.
Coupling beam of the present utility model undertakes a part of shearing using mild steel plate as intensive aspect so that coupling beam failure mode obtains
To improvement, more show as bending failure by shear；Mild steel plate is put into plasticity in the range of small strain simultaneously, plays power consumption earlier
Effect；The addition of mild steel plate will not cause coupling beam rigidity to increase substantially, and it is first to avoid common shaped steel coupling beam shear wall plastic hinge
The shortcomings that resulting from wall limb.
Mild steel plate and the fiber reinforcement high-damping polymer concrete of high ductility in coupling beam of the present utility model can glue
Co-ordination together is tied, the bond-slip problem between normal concrete and reinforcing bar is alleviated, improves concrete connecting-beam
Deformability, so as to improve the ductility of concrete connecting-beam and energy dissipation capacity；Under big displacement and big load action, the coupling beam can
Preferable globality is kept, while shear-carrying capacity is improved, Stiffness Deterioration is also postponed.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the highly energy-consuming concrete connecting-beam of built-in mild steel of the present utility model；
Accompanying drawing 2 is the Section A-A structural representation of accompanying drawing 1；
Accompanying drawing 3 is the section B-B structural representation of accompanying drawing 1.
Wherein：1-stress indulges muscle；2-mild steel plate；3-stirrup；The vertical muscle of 4-construction.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings.
As Figure 1-3：A kind of highly energy-consuming concrete connecting-beam of built-in mild steel, including stress indulge muscle 1, stirrup 3 and construction
Vertical muscle 4, it is characterised in that：The stress of rectangular setting indulges muscle 1 and uses the stirrup 3 of end fixed-type, the structure of stirrup 3 at both ends
Into inside cavity place mild steel plate 2, the both ends of mild steel plate 2 are separately fixed on the stirrup 3 at both ends, are constructed vertical muscle 4 and are set
Between stress indulges muscle 1 and positioned at the front and rear sides of mild steel plate 2（From the point of view of two sectional views：The vertical muscle 4 of construction is then located at mild steel plate
2 left and right sides）, also the stirrup 3 provided with middle part is used to fixing stress and indulges muscle 1 and the vertical muscle 4 of construction between the stirrup 3 at both ends；
Said structure, which is placed in coupling beam template to pour using fiber reinforcement high-damping polymer concrete, can obtain required coupling beam,
In use, the length of coupling beam embedment shear wall wall limb takes wall limb thickness and the higher value of deck-molding 1/2.From the point of view of structure and parameter,
Mild steel plate 2 is located at the middle part of coupling beam and the end both sides of mild steel plate 2 and welded together by the stirrup 3 at spot welding and both ends, together
When mild steel plate 2 upper and lower surface welded together by the stirrup 3 at spot welding and middle part；Mild steel plate 2 is H-shaped steel plate, mild steel plate 2
Thickness is the 1/15-1/10 of coupling beam width, and the both ends of mild steel plate 2 are highly no more than the housing depth that the stirrup 3 at both ends is formed
To realize that spot welding positions, the miding level height of mild steel plate 2 is the 1/3-1/2 of the end height of mild steel plate 2, while in mild steel plate 2
Segment length is equal to the net span of coupling beam.
In above-mentioned coupling beam, the material component of the fiber reinforcement high-damping polymer concrete used includes：Cement, water,
Flyash, sand, polymeric additive, fiber and high efficiency water reducing agent, defoamer, dispersant, wherein cement use conch board
P.O42.5 level Portland cements；Flyash uses I level flyash；Sand use modulus of fineness for 1.6~2.2 common river
It is husky；Water uses density as 1.0g/cm3, meet《Concrete water standard》（JGJ63-2006）It is required that ordinary tap water；It is poly-
Compound additive uses Carboxy emulsion or acrylate copolymer emulsion；Fiber is using modulus of elasticity 42Gpa, draw ratio 7%
PVA fibers；Dispersant uses neopelex, is also tetrapropylene benzene sodium sulfonate, is that a kind of white powder powder is consolidated
Body, it, which is dissolved in water, can become translucent solution, be mainly used as the surfactant in anionic；High efficiency water reducing agent uses outward appearance
It is the liquid of yellow transparent oily, the polycarboxylate water-reducer that water-reducing rate is 20~35%；Defoamer is using tributyl phosphate, poly- third
One kind in olefin(e) acid ester, silane copper polyethers.Wherein it is cement in mass ratio：Water：Flyash：Sand=1：（0.45~0.70）：
（0.50~1.20）：（1.00~2.20）Cement, water, flyash, sand are selected, by the 7~16% of cement and flyash quality dosage
Polymeric additive is chosen, high efficiency water reducing agent is chosen by the 0.8~1.8% of cement and flyash quality dosage, by cement and fine coal
The 0.5%~1.2% of grey quality dosage chooses defoamer, and 0.15~0.32% selection by cement and flyash quality dosage is scattered
Agent, fiber are PVA fibers, and PVA fibers are chosen by the 0.8%~2.5% of the cumulative volume of water, cement, flyash and sand；By above-mentioned original
Material matches somebody with somebody to postpone to stir in proportion can obtain fiber reinforcement high-damping polymer concrete.
The application principle of fiber reinforcement high-damping polymer concrete is：Fiber reinforcement high-damping polymer concrete by
Big with the progressively change of load during level bearing load, concrete component produces first microcrack in stress maximum,
Due to preferable interfacial adhesion between PVA fibers and concrete substrate be present, bridge joint effect can caused by interfacial adhesion
The concrete at fiber both ends is connected, so as to limit the further expansion of the microcrack width.Transfer when load continues increase
New microcrack is produced in other regions of component, and the width of every microcrack is no more than 100um, and this multiple cracking is simultaneously
The phenomenon being present on concrete component is referred to as " multiple crack growth ", and multiple crack growth can significantly increase the bearing capacity of component.Therefore
The concrete component load-bearing power and ductility that fiber reinforcement high-damping polymer concrete makes all are higher than normal concrete.Its Gao Yan
Property the characteristics of be particularly suitable for use in coupling beam, can ensure that concrete connecting-beam still with good globality while plays under big shake
The effect of power consumption.The concrete connecting-beam of built-in mild steel plate is compared to common intensive aspect（Reinforcing bar, shaped steel）Concrete connecting-beam have
Following advantage：（1）For mild steel compared with traditional steel, yield point is lower, occurs plasticity in the range of small strain and with height
Plastic deformation ability, can preferably with fiber reinforcement high-damping polymer concrete compatible deformation, common power consumption；（2）It is soft
The deviation amplitude of steel surrender bearing capacity is smaller compared to traditional steel, the stable mechanical property under cyclic load, therefore more suitable
Together in the making of prefabricated components；（3）The concrete connecting-beam of built-in mild steel plate is lower than built-in profile steel concrete connecting-beam rigidity, and earthquake is made
Under, the plastic hinge at coupling beam both ends is produced prior to wall limb, and power consumption effect can not be played in actual applications by avoiding some coupling beams
The problem of.
Further illustrate that the utility model carries below by the casting process of the highly energy-consuming concrete connecting-beam of built-in mild steel
The technical scheme of confession.
The casting method of the highly energy-consuming precast concrete coupling beam of the built-in mild steel is：（1）The stress of colligation coupling beam indulge muscle 1 into
Rectangle is set, and the end stirrup 3 that the outside colligation coupling beam both ends of muscle 1 are indulged in stress make it that the vertical muscle 1 of stress is fixed-type, is put into soft
Steel plate 2 and the inner side centre for being positioned at end stirrup 3, the both sides up and down of mild steel plate 2 are connected to one by spot welding and stirrup 3
Rise；The vertical muscle 4 of construction is arranged between the vertical muscle 1 of stress and also set between the front and rear sides of mild steel plate 2, the stirrup 3 at both ends
The stirrup 3 for having middle part is used to fix the vertical muscle 1 of stress and the vertical muscle 4 of construction, while completes the spot welding of remaining stirrup 3 and mild steel plate 2；
（2）Zhi Lianliang templates；（3）Coupling beam is poured using fiber reinforcement high-damping polymer concrete；（4）After the completion of pouring, strike off
Surface, in surface plastic covering film, water seasoning 28d after conserving 24 hours at room temperature；（5）Form removal, coupling beam pour
Complete.
Technical requirements：The stress of coupling beam, which indulges muscle 1 and the vertical muscle 4 of construction, should meet the calculating of coupling beam anti-bending bearing capacity and concrete knot
Detailing requiments in structure design specification GB50010；The stirrup 3 of coupling beam should meet that coupling beam shear resistance capacity calculates and non-Aseismic Design
Detailing requiments；The size of mild steel plate 2 is with reference to schematic diagram, and for the 1/15-1/10 of coupling beam width, the both ends height of mild steel plate 2 does not surpass
The housing depth of the composition of stirrup 3 at both ends is crossed to realize that spot welding positions, the miding level height of mild steel plate 2 is the end of mild steel plate 2
The 1/3-1/2 of height；Mild steel plate 2 preferably selects Japan to produce the mild steel marked as LY225/160/100, and performance is relatively stable.
Coupling beam example one：Sectional dimension is 120X500mm, net span 600mm（Coupling beam of the net span between shear wall
Length, do not include the link length stretched into shear wall）；Stirrup 3 is 6@80, and it is 4C12 that stress, which indulges muscle 1,（" C " represents HRB400
Level reinforcing bar）, it is 4B10 to construct vertical muscle 4（" B " represents HPB300 level reinforcing bars）.The size of mild steel plate 2：Thickness is 10mm；Both ends are high
It is respectively 250mm to spend for 440mm, length；Miding level height is 200mm, length 600mm, adds up to total length 1040mm；Mild steel plate 2
Marked as LY160.It is cross-section of coupling beam bilateral number of steel bars sum that above stress, which indulges muscle 1 and the quantity of the vertical muscle 4 of construction,.
Illustrate the fiber reinforcement high-damping polymer concrete material of the utility model use below by EXPERIMENTAL EXEMPLIFICATIONThe
The multinomial performances such as high Crack Control ability, energy absorption capability and the high tenacity that possess.
Cement uses conch board P.O42.5 level Portland cements；Flyash uses I level flyash；Sand uses fineness
Modulus is 1.6~2.2 common river sand；Water uses density as 1.0g/cm3, meet《Concrete water standard》（JGJ63-
2006）It is required that ordinary tap water；Polymeric additive uses acrylate copolymer emulsion；Fiber is using modulus of elasticity 42Gpa, length
PVA fiber of the footpath than 7%（Vinal）；Dispersant uses neopelex；High efficiency water reducing agent uses water-reducing rate
For 35% polycarboxylate water-reducer；Defoamer uses silane copper polyethers.
It is cement in mass ratio：Water：Flyash：Sand 1：0.55：0.6：1.8 selection cement, water, flyash, sand, by cement
Polymeric additive is chosen with the 7% of flyash quality dosage, efficient diminishing is chosen by the 0.8% of cement and flyash quality dosage
Agent, defoamer is chosen by the 1.05% of cement and flyash quality dosage, is chosen by the 0.30% of cement and flyash quality dosage
Dispersant, PVA fibers are chosen by the 1.8% of the cumulative volume of water, cement, flyash and sand；Above-mentioned raw materials are matched somebody with somebody to postpone in proportion and stirred
Mix and uniformly can obtain fiber reinforcement high-damping polymer concrete.
In tension test：Ultimate tensile strength and limit stress are respectively 2.22% and 3.3Mpa, are the 20.2 of pure matrix respectively
Times and 2.84 times.Damping ratio is tested：Using the free Attenuation Method of cantilever beam, under the free end mode of cantilever beam, tap freely
End, the logarithmic decrement and damping ratio of complex cement base are measured using free damping curve；Fiber reinforcement high-damping polymer
The damping ratio of the purer matrix of concrete improves 31.02%, and actual damping ratio concrete numerical value is 6.8%.Why fiber can carry
The damping capacity of high material be because：When PVA fibers disperse in the base, fiber has certain interface to tie with matrix
Close, the sliding friction at interface can be produced under forced movement, is the process that a mechanical energy is converted into frictional heat energy.
Coupling beam of the present utility model by indulged through the stress of prefabricated coupling beam stirrup 3 outside muscle 1 and the vertical muscle 4 of construction, vertical muscle,
The mild steel plate 2 being built in coupling beam is used as intensive aspect, and fiber reinforcement high-damping polymer concrete is compared as matrix, the coupling beam
In traditional concrete connecting-beam, as a result of fiber reinforcement high-damping polymer concrete as matrix and built-in mild steel plate 2,
So that the shear-carrying capacity and ductility of coupling beam are improved, there is good energy consumption effect under geological process.The utility model
Coupling beam using fiber reinforcement high-damping polymer concrete, the bridge joint of PVA fibers, which acts on, causes coupling beam in bearing load
The characteristics of during destroying, showing " multiple crack growth " and " strain hardening ", every microcrack are no more than 100um,
Therefore the bearing capacity of coupling beam can be improved using fiber reinforcement high-damping polymer concrete, mitigates the cracking stripping of coupling beam concrete
Fall.
Coupling beam of the present utility model undertakes a part of shearing using mild steel plate 2 as intensive aspect so that coupling beam failure mode
Improved, more show as bending failure by shear；Mild steel plate 2 is put into plasticity in the range of small strain simultaneously, plays earlier
Power consumption acts on；The addition of mild steel plate 2 will not cause coupling beam rigidity to increase substantially, and avoid common shaped steel coupling beam shear wall plasticity
The shortcomings that hinge first results from wall limb.The fiber reinforcement high-damping polymer concrete of mild steel plate 2 and high ductility in coupling beam can
Co-ordination is bonded together, the bond-slip problem between normal concrete and reinforcing bar is alleviated, improves concrete connecting-beam
Deformability, so as to improve the ductility of concrete connecting-beam and energy dissipation capacity；Under big displacement and big load action, the coupling beam energy
Preferable globality is enough kept, while shear-carrying capacity is improved, Stiffness Deterioration is also postponed.
Above example is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected；The technology that the utility model is not directed to can be realized by prior art.
Claims (6)
1. a kind of highly energy-consuming concrete connecting-beam of built-in mild steel, including stress indulge muscle（1）, stirrup（3）With the vertical muscle of construction（4）, its
It is characterised by：The stress of rectangular setting indulges muscle（1）Using the stirrup of end（3）It is fixed-type, the stirrup at both ends（3）Form
Inside cavity place mild steel plate（2）, mild steel plate（2）Both ends be separately fixed at the stirrup at both ends（3）On, construct vertical muscle
（4）It is arranged on stress and indulges muscle（1）Between and be located at mild steel plate（2）Front and rear sides, the stirrup at both ends（3）Between be also provided with
The stirrup in portion（3）Muscle is indulged for fixing stress（1）With the vertical muscle of construction（4）；Said structure, which is placed in coupling beam template, uses fiber
Enhancing high-damping polymer concrete, which pours, can obtain required coupling beam.
2. the highly energy-consuming concrete connecting-beam of built-in mild steel according to claim 1, it is characterised in that：Described mild steel plate
（2）Positioned at the middle part of coupling beam and mild steel plate（2）End both sides pass through spot welding and the stirrup at both ends（3）Weld together.
3. the highly energy-consuming concrete connecting-beam of built-in mild steel according to claim 2, it is characterised in that：The mild steel plate（2）
Upper and lower surface pass through spot welding and the stirrup at middle part（3）Weld together.
4. according to the highly energy-consuming concrete connecting-beam of any described built-in mild steel of claim 1-3, it is characterised in that：Described is soft
Steel plate（2）For H-shaped steel plate, mild steel plate（2）Thickness be coupling beam width 1/15-1/10, mild steel plate（2）Both ends height not
More than the stirrup at both ends（3）The housing depth of composition is to realize that spot welding positions, mild steel plate（2）Miding level height be mild steel plate
（2）End height 1/3-1/2.
5. the highly energy-consuming concrete connecting-beam of built-in mild steel according to claim 4, it is characterised in that：The mild steel plate（2）
Middle segment length be equal to coupling beam net span.
6. the highly energy-consuming concrete connecting-beam of built-in mild steel according to claim 1, it is characterised in that：Described coupling beam embedment
The length of shear wall wall limb takes wall limb thickness and the higher value of deck-molding 1/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038010.5U CN206681258U (en) | 2016-09-06 | 2016-09-06 | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621038010.5U CN206681258U (en) | 2016-09-06 | 2016-09-06 | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206681258U true CN206681258U (en) | 2017-11-28 |
Family
ID=60394761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621038010.5U Expired - Fee Related CN206681258U (en) | 2016-09-06 | 2016-09-06 | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206681258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193450A (en) * | 2016-09-06 | 2016-12-07 | 南京工业大学 | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel |
-
2016
- 2016-09-06 CN CN201621038010.5U patent/CN206681258U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193450A (en) * | 2016-09-06 | 2016-12-07 | 南京工业大学 | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206581145U (en) | A kind of concrete-bridge end deck installation structure for exempting from expansion joint | |
| CN107447646B (en) | Preparation method of steel-continuous fiber composite bar ECC-concrete composite column/pier | |
| CN108560419A (en) | Steel reinforced concrete combines the L-shaped side slot UHPC floorings of negative moment section of beam and its longitudinally connected | |
| CN108086594A (en) | A kind of fiber composite steel open web type angle steel marine aggregate concrete square column and preparation method thereof | |
| CN107165336A (en) | A kind of combination beam and its manufacture method | |
| CN107555919B (en) | Bridge grouting material and method for rapidly repairing bridge expansion joint by adopting same | |
| CN110387878B (en) | Preparation process of inner-layer permeation-resistant corrosion-resistant concrete prefabricated square pile | |
| CN106193450A (en) | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel | |
| CN108824696A (en) | A kind of FRP tendons seawater sea sand-UHDCC composite beam and its construction method | |
| CN108590035A (en) | High-strength recycled concrete superposed column and preparation method thereof | |
| CA2547694C (en) | Metal fiber concrete | |
| CN110130501A (en) | A kind of welding procedure method suitable for combining the cement-based material of concrete structure | |
| CN206681258U (en) | A kind of highly energy-consuming concrete connecting-beam of built-in mild steel | |
| CN110409283A (en) | It is a kind of based on retarded adhesive prestressed UHPC permanent template without the rib prestressed Self-curing combination beam of abdomen and construction method | |
| JP5615015B2 (en) | Seismic reinforcement structure and seismic reinforcement method | |
| CN107795071A (en) | A kind of non-adhesive superhigh tenacity cement-base composite material functionally gradient beam and method | |
| JP3641326B2 (en) | Grout composition | |
| CN109025065B (en) | Construction process for horizontal shaping prefabricated constructional column | |
| CN208792625U (en) | High-strength recycled concrete superposed column | |
| CN207405875U (en) | A kind of non-adhesive superhigh tenacity cement-base composite material functionally gradient beam | |
| CN106193646A (en) | A kind of composite reinforcing structure of the concrete outsourcing carbon cloth to beams of concrete | |
| CN207032918U (en) | The ruggedized construction of sea sand reinforced beam | |
| CN108677716A (en) | A kind of group's nail attachment device with corrugated sleeve | |
| CN108947448A (en) | A kind of flexible grout material and preparation method thereof for assembled stair | |
| CN106835932A (en) | UHPC combined box beams |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 Termination date: 20210906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |