CN209323343U - A kind of light section-ultra-high performance concrete stiffness bracket floor - Google Patents
A kind of light section-ultra-high performance concrete stiffness bracket floor Download PDFInfo
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- CN209323343U CN209323343U CN201821914038.XU CN201821914038U CN209323343U CN 209323343 U CN209323343 U CN 209323343U CN 201821914038 U CN201821914038 U CN 201821914038U CN 209323343 U CN209323343 U CN 209323343U
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Abstract
The utility model discloses a kind of light section-ultra-high performance concrete stiffness bracket floors, the bracket floor includes panel (1), rib of slab (2), stiffness reinforcing member (3) and shear connector (4), stiffness reinforcing member (3) is set to the bottom of rib of slab (2) and wide with rib of slab (2) bottom surface, rib of slab (2) is connect with stiffness reinforcing member (3) by shear connector (4) integral, notch (5) are provided at the top of the side plate rib of bracket floor edge, several wedge-shaped openings (6) are set along side plate rib length direction below notch (5).The utility model can solve ultra-high performance concrete floor fatiguability cracking problem, it is obviously improved wet seam crack-resisting performance between prefabricated board, ultra-high performance concrete and the excellent tension of steel, pressure performance can be made full use of, dead load is lighter, section utilization efficiency is higher, the entirety of stiffness bracket floor floorings and part are more rigid, and cracking resistance and anti-overload capacity are strong, and convenient for construction.
Description
Technical field
The utility model belongs to bridge structure building field, in particular to a kind of light section-ultra-high performance concrete stiffness
Bracket floor.
Background technique
Floorings directly bear vehicular load and environmental activity, be by overload, the unfavorable factors such as corrosion and fatigue influenced it is most straight
The component connect, therefore its working condition will directly affect the durability and road-ability for the structure of falling bridge main body.Orthotropic
Steel bridge deck, normal concrete floorings are two kinds of main floorings forms of current science of bridge building application.Normal concrete
Floorings can preferably adapt to Asphalt Concrete Deck Pavement or cement is mated formation, and driving effect is preferable, but due to normal concrete
Low cross-intensity causes its plate thickness larger, and dead load is larger, it is difficult to adapt to the demand of Longspan Bridge, and wet seam,
It is easy to crack near hogging moment area, staying cable anchorage zone.Orthotropic Steel Bridge Deck has from heavy and light, ultimate bearing capacity is big, constructs
The advantages that period is short is widely used in Longspan Bridge, but since steel bridge deck rigidity is relatively low, viscous with bituminous concrete
The reasons such as knot property and compatibility of deformation performance difference, so that the Orthotropic Steel Bridge Deck of operation many years fatigue cracking easily occurs and mats formation
The diseases such as breakage.
Ultra-high performance concrete (UHPC) has high elastic modulus, high resistance to compression, tensile strength and good Creep Characteristics etc.
Advantage can reduce structure size, mitigate dead load, improves structure and resists load validity and increase the ability crossed over.Cause
This, the ultra-high performance concrete floorings based on the research and development of ultra-high performance concrete performance can avoid Orthotropic Steel Bridge Deck fatigue
It cracks and delicate problem of mating formation, can reduce dead load, adapt to Longspan Bridge demand, while there is excellent tensile property
Ultra-high performance concrete can solve the problems, such as that normal concrete floorings are easy to crack, durability is good.
The utility model patent of 106758813 A of publication No. CN discloses a kind of superelevation for steel reinforced concrete composite beam bridge
Energy concrete well formula rib floorings and its construction method, including prefabricated ultra-high performance concrete well formula rib floorings, rectangular cylindrical
Notch, top bars, lower layer's reinforcing bar, cluster nail group, high-strength grout, wet tape splicing reinforcing bar and wet tape splicing concrete.This is practical new
The floorings of type can play the high mechanical characteristic of ultra-high performance concrete resistance to compression, tensile strength, using well formula rib and panel combination,
It effectively improves rigidity, bearing capacity, reduce plate thickness.But the well formula rib floorings rib width only 10cm~15cm, guarantee it is good
Under the premise of workability, tensile region configures regular reinforcement limited amount, when floorings across footpath is larger, fatiguability cracking, it is difficult to suitable
Answer the demand of high cracking resistance energy.In addition, width only configures regular reinforcement in 10cm~15cm rib of slab, it may be to very-high performance coagulation
Fiber distribution has an adverse effect in soil, influences safety of structure.In addition, wet seam connecting belt construction is using normal between well formula rib floorings
Advise flat mouth construction, easily new-old concrete section generate contraction fissure, due to steel fibre it is discontinuous caused by weak load-bearing point
Cracking risk is high, and durability is poor.
The utility model patent of 107604815 A of publication No. CN discloses a kind of included template ultra-high performance concrete group
Floorings are closed, it is mainly spliced by several piece cell board, and cell board includes steel sole plate and the very-high performance on steel sole plate
Concrete slab, the shear connector for connecting ultra-high performance concrete panel is welded on steel sole plate, and every piece of steel sole plate is
Flat truncated rectangular pyramids shape thin-walled steel member, adjacent steel sole plate connect with the internal component for the girder being located at below floorings and are made
Each steel sole plate links into an integrated entity；The top of shear connector along bridge to being respectively equipped with the steel to link into an integrated entity with direction across bridge
Muscle constitutes floorings upper limb steel bar stress net, and steel sole plate and shear connector accordingly become floorings lower edge steel bar stress and cut
Power reinforcing bar, and collectively as the bed die of floorings.The utility model floorings use ultra-high performance concrete, can effectively solve existing
There are the problems such as easy cracking, deck paving breakage present in Steel Bridge Deck, but the entire bottom of this kind of combined bridge deck is respectively provided with
There is steel plate, on the one hand can dramatically increase bridge structure steel using amount, increase dead load and cost, influence bridge structure crosses over energy
Power, still further aspect steel plate of baseplate will will form strong constraint boundary to the ultra-high performance concrete of floorings, show in practical application of bridge
Field, which pours, room temperature maintenance is easy to produce shrinkage cracking etc. influences safety and the durability of structure, it is necessary to pass through steam curing etc.
Mode avoids shrinkage cracking, this makes troubles to construction.
The utility model patent of 105780649 A of publication No. CN discloses a kind of one Combined concrete bridge of recessed rib weathering steel
Panel, combined bridge deck plate unit includes bottom steel plate and pours cast in place concrete plate thereon, and makes bottom steel plate, cast-in-place coagulation
The shear connector that native plate is connected as one is welded to connect end socket perforated steel plate at bottom steel plate width direction both ends, to effectively reduce bridge
Face system steel using amount, and make the readily available guarantee of the construction quality of floorings, simplify construction technology, thus effectively save engineering cost
With.But this kind of construction is only applicable to normal concrete combined bridge deck, when using ultra-high performance concrete floorings, bottom setting
Steel plate will to ultra-high performance concrete formed strong constraint boundary, easily make ultra-high performance concrete during maintenance and operation
Shrinkage cracking influences safety of structure, and overall with setting steel plate in bottom can not also play the excellent resistance to compression of ultra-high performance concrete
And tensile property, furthermore very-high performance coagulation will be also blocked in the end socket perforated steel plate that bottom steel plate width direction both ends are welded to connect
The continuous and random distribution of steel fibre in soil, has an adverse effect safely to structure.
Utility model content
Technical problem to be solved in the utility model is to overcome the shortcomings of to mention in background above technology and defect, is mentioned
For a kind of from heavy and light, light section-ultra-high performance concrete stiffness bracket floor that rigidity is big, construction is convenient, durability is good.
In order to solve the above technical problems, the utility model proposes technical solution are as follows: a kind of light section-very-high performance coagulation
Native stiffness bracket floor, including panel, rib of slab, stiffness reinforcing member and shear connector, rib of slab be set to panel bottom and with
Panel, which pours, to be integrated, and rib of slab is poured perpendicular to panel, panel and floor by ultra-high performance concrete, stiffness reinforcing member
Be set to the bottom of rib of slab and wide with rib of slab bottom surface, rib of slab connect with stiffness reinforcing member by shear connector it is integral,
The notch along the setting of side plate rib length direction is provided at the top seam of the side plate rib of bracket floor edge, under notch
Several wedge-shaped openings are arranged along side plate rib length direction in side, and the section of wedge-shaped opening in-plane locating for the panel is the wedge of outer narrow inner width
Shape.The upper step of the at T-shaped seam of notch structure.
Further, the total height of perforation notch at the top of wedge-shaped opening, notch and wedge-shaped opening is equal to the height of T shape seam.
Further, the width of the side plate rib is 0.20m~0.60m, and the depth of the notch is 0.03m~0.10m,
The width of notch is 0.05m~0.40m, and the nearly plate outside width of the wedge-shaped opening is 0.05m~0.30m, the nearly plate of the wedge-shaped opening
Inboard width is 0.10m~0.40m.Notch is arranged in side plate rib top surface, and it is mixed can to block cast-in-place very-high performance by notch top surface
The contraction of soil is coagulated, to reduce the shrinkage stress for pouring the new and old ultra-high performance concrete interface in front and back, avoids seam appearance
Contraction fissure significantly improves the durability at joint of bridge, and notch is arranged in still further aspect can be discontinuous by steel fibre
Stress plane of weakness is set to low Tension Stress Zone, substantially reduces its cracking risk.The wedge-shaped opening of outer narrow inner width is arranged in side plate rib bottom,
The contraction that cast-in-place ultra-high performance concrete can not only be blocked can also make new and old ultra-high performance concrete at wedge-shaped outlet structure
Interface is interlaced, improve fiber it is discontinuous caused by weak link stress, effectively increase the shearing resistance of beam slab seam crossing
And tensile bearing capacity, cancel the dabbing process of existing seam construction, can simplify construction, prefabricated board is laterally assembled and is accurately positioned
Afterwards, the reinforcing bar operation without any scene is advantageously implemented the rapid construction of ultra-high performance concrete structure convenient for construction.
Further, the plate thickness is 0.02m~0.30m.
Preferably, when the plate thickness is greater than 0.06m, the reinforcing bar by forming in a crisscross manner is provided in the panel
Net, this is provided with the intensity and cutting-bearing capacity that panel is improved beneficial to enhancing.
Further, the rib of slab includes vertical bridge to rib of slab and/or direction across bridge rib of slab, indulges bridge to rib of slab and direction across bridge rib of slab
It is mutually perpendicular to intersect.
Further, the rib of slab height is 0.10m~0.60m, and the panel combines to form rib structure with rib of slab, institute
Stating rib of slab section is inverted trapezoidal or rectangle, and upper limb width is 0.08m~0.30m, and lower edge width is 0.08m~0.30m, adjacent
Rib of slab center spacing is 0.30m~1.50m.This kind setting improves whole rigid under the premise of guaranteeing that materials are least
Degree and intensity.
Further, the stiffness reinforcing member thickness is not less than 0.006m.On the one hand bridge floor can be improved in this setting
Rigidity, crack resistance and the bearing capacity of plate, while the longitudinal tensile reinforcing bar of floor bottom can be cancelled, avoid reinforcing bar to superelevation
The adverse effect of fiber distribution in energy concrete thin plates, only stiffness reinforcing member is arranged in rib bottom in still further aspect will not be to super
High performance concrete floorings form strong constraint boundary, are less prone to the disease of shrinkage cracking, are adaptable to cast in situs room temperature
The case where maintenance, it is convenient to construct.
Further, the stiffness reinforcing member be channel steel, the unidirectional corrugated steel of rib of slab width direction, checkered steel plate or
Plain plate, wherein channel steel height is 0.05m~0.40m, and channel steel both sides will wrap up on the downside of rib of slab.Using the effect of channel steel: using
On the one hand channel steel selects market finished product channel steel as stiffness reinforcing member, without processing, have fatigue behaviour good and cheap
A little, structural fatigue performance can be improved and reduce structural cost；Still further aspect selects channel steel, and channel steel both sides will be under rib of slab
Side package can increase the contact area of steel plate and rib of slab, and then enhance the connection function with rib of slab, cancel the hoop inside rib of slab
Muscle simplifies reinforcement constitution；And effective tension area of rib of slab can be improved in the side sheet steel sections of channel steel, and then improves having for section
The ratio of reinforcement is imitated, to significantly improve the cracking resistance of combined bridge deck.Using the effect of unidirectional corrugated steel and checkered steel plate: adopting
With the stiffness reinforcing member of the unidirectional ripple of surface band or decorative pattern, the bonding of ripple, decorative pattern and ultra-high performance concrete can use
And wedge action, the anti-slipping property energy at interface is significantly increased, the connection function of rib of slab and steel plate is enhanced.
Further, the shear connector is that socket cap welds nail form, angle steel form or the form with ribbing of aperture.Institute
Socket cap weldering nail form is stated, a diameter of 0.006m~0.019m, length is 0.03m~0.20m；The angle steel form, length
Angle limb width is 0.03m~0.20m, and short angle limb width is 0.03m~0.10m, and length is 0.03m~0.20m；The aperture
Steel plate strips, height are 0.03m~0.15m, and with a thickness of 0.006m~0.01m, hole diameter is 0.01m~0.10m, and
Along stiffness reinforcing member direction at least provided with 2 steel plate strips.
Preferably, shear connector is socket cap weldering nail, and the spacing for indulging bridge to socket cap weldering nail is 0.08m~0.40m, this
One setting can make between ultra-high performance concrete and steel plate combine it is even closer, avoid occur delamination sliding phenomenon, avoid cylinder
Head weldering nail bottom generates the cavity of ultra-high performance concrete, the shadow for avoiding shear connector from being distributed ultra-high performance concrete fiber
It rings.
Ultra-high performance concrete is a proprietary name in the art, is generally referred to superelevation compression strength, high tensile
The good concrete of intensity, high ductility, high tenacity, high-durability, application property is opposite normal concrete, high performance concrete
For the more excellent concrete material of another kind of mechanical property.Panel described in the utility model and rib of slab are by surpassing
High performance concrete pours, and the ultra-high performance concrete can be Reactive Powder Concrete, very-high performance fiber reinforcement
Concrete, slip casting fiber concrete, it is closely knit match rib reinforced composite material or engineering latex composite material etc..It is preferred that ultra-high performance concrete
Reactive Powder Concrete or very-high performance fibre reinforced concrete or closely knit arrangement of reinforcement cement for compression strength not less than 100MPa
Based composites.This kind of ultra-high performance concrete is more easily implemented the lightweight of mark bracket floor, high intensity, high rigidity.
The advantages of to illustrate the utility model, provide following experimental result: Fig. 4, Fig. 5 give the identical arrangement of reinforcement of the ratio of reinforcement
The cross-section diagram of UHPC component and steel-UHPC combined member, wherein in Fig. 4, Fig. 5 N1, N1a, N2, N3 be respectively diameter 8mm,
The HRB400 reinforcing bar of 16mm, 8mm, 8mm, dimensional units marked in the figure are mm.It is computed, the transformed section in section shown in Fig. 4
The moment of inertia is 0.000317m4, the second moment of area of tranformed section in section shown in Fig. 5 is 0.000357m4, conversion with section shown in Fig. 4
Cross sectional moment of inertia increases about 12.4%.Meanwhile Fig. 6 gives the load-displacement curve of two kinds of UHPC components, can be seen by Fig. 6
Out, under identical load action, the displacement of arrangement of reinforcement UHPC component is significantly greater than steel-UHPC combined member, such as load is about 210kN
When, the displacement of arrangement of reinforcement UHPC component is about 12mm, and the displacement of steel plate-UHPC combined member is about 9mm, and displacement reduces about
25%, this shows for tension stiffness reinforcing member to be arranged in UHPC member bottom section, can further improve the used of UHPC member section
Property square, and then improve UHPC component initial stiffness and split rear rigidity.
Fig. 7 gives the load-maximum crack width curve of two kinds of UHPC components, as seen from Figure 7, steel-UHPC group
It closes when component load is 80kN and observes that the microcrack of 0.05mm occurs in test beam.And to arrangement of reinforcement UHPC component, correspond to crack
The payload values of width 0.05mm are respectively 60kN, and steel-UHPC combined member is 1.33 times of arrangement of reinforcement UHPC component, show that steel plate has
Effect limits the germinating and extension of microcrack, improves the crack resistance of UHPC component.
Above-mentioned experimental result may indicate that
(1) tension stiffness reinforcing member is arranged in ultra-high performance concrete (UHPC) rib of slab bottom, can further improve
The moment of inertia in UHPC rib of slab section, and then improve the rigidity of UHPC rib of slab；
(2) tension stiffness reinforcing member is arranged in UHPC rib of slab bottom, the neutral axial tension of UHPC floorings can be made
Area's offset, and then the stress of steel plate is reduced, still further aspect, tension stiffness reinforcing member is arranged suitable in UHPC floorings bottom
It is zero in thickness of protection tier, the fracture interval of UHPC component can be reduced, the efficiency of Restricted Crack Width development can be improved, into
And improve the crack resistance of UHPC component.
The light section-ultra-high performance concrete stiffness bracket floor construction method, comprising the following steps:
S1. stiffness reinforcing member is connected integral with shear connector, ultra-high performance concrete, shape is poured in template
At bracket floor prefabricated unit；
S2. the bracket floor prefabricated unit being oppositely arranged is set up, is installed at the top of girder steel, forms cast-in-place very-high performance
The wet seam region of concrete slab；
S3. in the wet seam region cast in situs ultra-high performance concrete of cast-in-place ultra-high performance concrete.
Compared with the prior art, the advantages of the utility model are:
(1) the utility model is only in the tension bottom of ultra-high performance concrete floor setting steel plate (with rib of slab bottom surface etc.
It is wide), bracket floor is formed, can avoid bottom overall with steel plate (steel plate covers rib of slab side and panel bottom) to very-high performance coagulation
Strong constraint boundary that soil is formed and lead to its maintenance and the from now on easy problem of shrinkage cracking in use process.Give full play to steel
Tensile property further increases the entirety and local stiffness of floorings, significantly improves the cracking resistance and anti-overload energy of floorings
Power, constructing, convenient, security performance is more preferable.The longitudinal tensile reinforcing bar for eliminating floor bottom, avoids reinforcing bar to very-high performance coagulation
The adverse effect that fiber is distributed in native thin plate.
(2) the utility model can give full play to the excellent resistance to compression and tensile property of ultra-high performance concrete, improve section
Utilization efficiency improves the entirety and local stiffness of floorings, reduces the plate thickness and dead load of floorings, is suitable for long-span bridge
Beam and plate avoid Orthotropic Steel Bridge Deck fatiguability cracking and concrete slab from great and easily open across biggish demand
The problem split.
(3) notch is arranged in top surface in the side plate rib of the utility model, multiple wedge-shaped openings is arranged in lower part, so that notch constructs
The interface of new and old ultra-high performance concrete is interlaced at place and wedge-shaped outlet structure, improve fiber it is discontinuous caused by weakness ring
The stress of section effectively increases shearing resistance and the tensile bearing capacity of beam slab seam crossing, and it is mixed to reduce new and old very-high performance before and after pouring
The shrinkage stress of solidifying Soil Interface, avoids seam and contraction fissure occurs, significantly improve the durability of bracket floor seam crossing, can
To simplify construction, cancel the dabbing process of existing seam construction, after and accurate positioning laterally assembled by precast body plate, without any
The reinforcing bar operation at scene is advantageously implemented the rapid construction of ultra-high performance concrete structure convenient for construction.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the utility model embodiment light section-ultra-high performance concrete stiffness bracket floor schematic cross-sectional view；
Fig. 2 is the A-A cut-away illustration of Fig. 1；
Fig. 3 is the B-B cut-away illustration of Fig. 1；
Fig. 4 is the cross-section diagram of arrangement of reinforcement UHPC component；
Fig. 5 is the cross-section diagram of steel plate-UHPC combined member；
Fig. 6 is two kinds of UHPC component load-displacement curves；
Fig. 7 is two kinds of UHPC component load-maximum crack width curves；
Fig. 8 is that the wet seam crossing of light section-ultra-high performance concrete stiffness bracket floor of the utility model embodiment is horizontal
Sectional schematic diagram；
Fig. 9 is Fig. 8 B-B schematic cross-sectional view.
Marginal data:
1, panel；21, bridge is indulged to rib of slab；22, direction across bridge rib of slab；3, stiffness reinforcing member；4, shear connector；5, slot
Mouthful；6, wedge-shaped opening.
Specific embodiment
For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model
It does and more comprehensively, meticulously describes, but the protection scope of the utility model is not limited to following specific embodiments.
Unless otherwise defined, all technical terms used hereinafter are generally understood meaning phase with those skilled in the art
Together.Technical term used herein is intended merely to the purpose of description specific embodiment, and being not intended to limitation, this is practical new
The protection scope of type.
Embodiment:
The light section of the present embodiment-ultra-high performance concrete stiffness bracket floor construction, including panel 1, rib of slab 2, stiffness
Reinforcing member 3, shear connector 4.Rib of slab 2 is set to 1 bottom of panel, pours and is integrated and perpendicular to panel 1, strength with panel 1
Property reinforcing member 3 be set to 2 bottom of rib of slab and wide with 2 bottom surface of rib of slab, and connected by shear connector 4 integral.
As shown in Figures 1 to 3, in the present embodiment, light section-ultra-high performance concrete stiffness bracket floor is super for PK steel case-
Floorings in high performance concrete combination beam.Panel 1 is respectively provided with a thickness of 0.08m, the vertical bridge of panel 1 to direction across bridge bottom
There is rib of slab 2, respectively indulges bridge to rib of slab 21 and direction across bridge rib of slab 22.The steel mesh by forming in a crisscross manner is provided in panel 1.
2 height of rib of slab is 0.17m, and panel 1 combines to form rib structure with rib of slab 2, and 2 section of rib of slab is inverted trapezoidal, and upper limb width is
0.20m, lower edge width are 0.18m, and adjacent 2 center spacing of longitudinal rib is 0.70m.Stiffness reinforcing member 3 is set to 2 bottom of rib of slab,
Stiffness reinforcing member 3 is channel steel, is highly 0.08m, both sides will wrap up on the downside of rib of slab 2.Rib of slab 2 passes through with stiffness reinforcing member 3
Shear connector 4 connects.Shear connector is socket cap weldering nail, and the height of 2 bottom socket cap of rib of slab weldering nail is 0.12m, indulges bridge
Spacing to socket cap weldering nail is 0.15m, and the height of 2 lateral cylindrical head of rib of slab weldering nail is 0.35m, indulges bridge to socket cap weldering nail
Spacing is 0.15m, is in interlaced arrangement with 2 bottom socket cap of rib of slab weldering nail.The panel 1 and rib of slab 2 are by very-high performance coagulation
Soil pours.
Such as Fig. 8 and 9, the width of side plate rib is 0.35m, and side plate rib length direction is provided with notch 5, slot at top seam
The depth of mouth 5 is 0.05m, and the width of notch 5 is 0.20m, and 5 lower section of notch is several outer narrow interior along the setting of side plate rib length direction
Wide wedge-shaped opening 6, the nearly plate outside width of wedge-shaped opening 6 are 0.10m, and the nearly plate inboard width of wedge-shaped opening 6 is 0.20m.
The light section of the present embodiment-ultra-high performance concrete stiffness bracket floor construction method, comprising the following steps:
S1: the light section that is prefabricated in the factory-ultra-high performance concrete stiffness bracket floor prefabricated unit, the specific steps are that:
S1.1: having configured frame mould and the mold for being used to form rib of slab by design requirement on work top, meanwhile, by design
It is required that processing the stiffness reinforcing member 3 consistent with rib of slab length and width；
S1.2: stiffness reinforcing member 3 upper surface be arranged shear connector 4, by design requirement process steel mesh with
Stirrup, and steel mesh and stirrup and shear connector are connected into a whole bar construction；
S1.3: ultra-high performance concrete is poured, and is conserved in time；
S1.4: when pouring ultra-high performance concrete and reaching design requirement, form removal, storage to designated position is formed
Light section-ultra-high performance concrete stiffness bracket floor prefabricated unit.
S2: at the construction field (site) set up be oppositely arranged by the prefabricated obtained prefabricated unit of the S1, contiguous prefabricated unit root
It is installed at the top of girder steel, and is oppositely arranged according to design requirement, form the cast-in-place wet seam region of ultra-high performance concrete floorings；
S3: binding the vertical, horizontal embedded ribs of two neighboring prefabricated unit with dowel, and pays attention to being in interlaced arrangement, existing
Pour the wet seam region cast in situs ultra-high performance concrete of ultra-high performance concrete；
S4: conserving cast-in-place ultra-high performance concrete, after reaching design strength, keeps the light section-being oppositely arranged super
High performance concrete stiffness bracket floor forms integrated deck plate.
The preferred embodiment of above-mentioned only the utility model, does not impose any limitation on the present invention.Cause
This, all contents without departing from technical solutions of the utility model do above embodiments according to the utility model technical spirit
Any simple modifications, equivalents, and modifications, should all fall in technical solutions of the utility model protection in the range of.
Claims (9)
1. a kind of light section-ultra-high performance concrete stiffness bracket floor, which is characterized in that including panel (1), rib of slab (2), strength
Property reinforcing member (3) and shear connector (4), rib of slab (2) are set to panel (1) bottom and pour with panel (1) and be integrated, plate
Rib (2) is poured perpendicular to panel (1), panel (1) and floor (2) by ultra-high performance concrete；Stiffness reinforcing member (3) is set
It is placed in the bottom of rib of slab (2) and wide with rib of slab (2) bottom surface, rib of slab (2) and stiffness reinforcing member (3) pass through shear connector
(4) it connects integral；It is provided at the top seam of the side plate rib of bracket floor edge notch (5), notch (5) is along side plate
The setting of rib length direction, is arranged several wedge-shaped openings (6) along side plate rib length direction below notch (5), wedge-shaped opening (6) is along panel
(1) section of in-plane locating for is the wedge shape of outer narrow inner width.
2. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that the face
Plate (1) is with a thickness of 0.02m~0.30m, when panel (1) thickness is greater than 0.06m, is provided in panel (1) by forming in a crisscross manner
Steel mesh.
3. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that the plate
Rib (2) includes vertical bridge to rib of slab (21) and/or direction across bridge rib of slab (22), and it is mutual to rib of slab (21) and direction across bridge rib of slab (22) to indulge bridge
Square crossing.
4. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that the plate
Rib (2) section is inverted trapezoidal or rectangle.
5. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that the strength
Property reinforcing member (3) thickness be not less than 0.006m.
6. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that the strength
Property reinforcing member (3) be channel steel, rib of slab width direction unidirectional corrugated steel or checkered steel plate.
7. light section according to claim 6-ultra-high performance concrete stiffness bracket floor, which is characterized in that the slot
Steel height is 0.05m~0.40m, and channel steel both sides will wrap up on the downside of rib of slab (2).
8. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that the wedge
Notch (5) are penetrated through at the top of shape mouth (6), the depth of notch (5) is 0.03m~0.10m, and width is 0.05m~0.40m, wedge-shaped opening
(6) outside width is 0.05m~0.30m, and inboard width is 0.10m~0.40m.
9. light section according to claim 1-ultra-high performance concrete stiffness bracket floor, which is characterized in that described
Shear connector (4) is that socket cap welds nail form, angle steel form or the steel plate strips of aperture；The socket cap welds nail form,
A diameter of 0.006m~0.019m, length are 0.03m~0.20m；The angle steel form, long angle limb width be 0.03m~
0.20m, short angle limb width are 0.03m~0.10m, and length is 0.03m~0.20m；The steel plate strips of the aperture, height
For 0.03m~0.15m, with a thickness of 0.006m~0.01m, hole diameter is 0.01m~0.10m, and along stiffness reinforcing member (3)
Width direction is at least provided with 2 steel plate strips.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356016A (en) * | 2018-11-20 | 2019-02-19 | 湖南大学 | A kind of light section-ultra-high performance concrete stiffness bracket floor and construction method |
| CN111705650A (en) * | 2020-06-01 | 2020-09-25 | 湖南大学 | UHPC beam slab cast-in-place joint structure with embedded reinforced steel component and construction method thereof |
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2018
- 2018-11-20 CN CN201821914038.XU patent/CN209323343U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356016A (en) * | 2018-11-20 | 2019-02-19 | 湖南大学 | A kind of light section-ultra-high performance concrete stiffness bracket floor and construction method |
| CN111705650A (en) * | 2020-06-01 | 2020-09-25 | 湖南大学 | UHPC beam slab cast-in-place joint structure with embedded reinforced steel component and construction method thereof |
| CN111705650B (en) * | 2020-06-01 | 2021-07-23 | 湖南大学 | UHPC beam slab cast-in-place joint structure with embedded reinforced steel component and construction method thereof |
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