CN107553692B - The preparation method of crash bearer - Google Patents
The preparation method of crash bearer Download PDFInfo
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- CN107553692B CN107553692B CN201710924090.7A CN201710924090A CN107553692B CN 107553692 B CN107553692 B CN 107553692B CN 201710924090 A CN201710924090 A CN 201710924090A CN 107553692 B CN107553692 B CN 107553692B
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- crash bearer
- backplate
- reactive powder
- crash
- concrete
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- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000004567 concrete Substances 0.000 claims abstract description 114
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- 239000002002 slurry Substances 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 30
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- 238000000576 coating method Methods 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 abstract description 15
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/08—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks
- E01F15/081—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material
- E01F15/083—Continuous barriers extending along roads or between traffic lanes essentially made of walls or wall-like elements ; Cable-linked blocks characterised by the use of a specific material using concrete
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Lining And Supports For Tunnels (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a kind of preparation methods of crash bearer, wherein the crash bearer includes crash bearer core and crash bearer backplate；The crash bearer backplate is fixed on the crash bearer core from the side of the crash bearer backplate；Wherein, the crash bearer backplate is prepared using Reactive Powder Concrete.Crash bearer of the invention invade extraneous erosion source can not again in former concrete crash bearer, can increase the service life of existing crash bearer by expansion anchoring bolt and injection slurry connection type, and this crash bearer backplate will not aging, it is easy for construction, simply, reduce maintenance cost.Crash bearer backplate of the invention is directly poured as surface layer template, ensure that the thickness and quality of surface layer, and crash bearer backplate and crash bearer core of the invention is concrete material, bonding is good, not only reduces the usage amount of template, and reduce striking time.
Description
Technical field
The present invention relates to a kind of building construction more particularly to a kind of preparation methods of crash bearer.
Background technique
With China's rapid development of economy, the increase of infrastructure investment, the highway in China, urban viaduct etc.
Express lane mileage open to traffic is in the breakthrough for having a milestone in recent years, but high speed traveling bring safety problem is also increasingly
Prominent, since speed is higher, accident severity is relatively high, causes a large amount of casualties and property loss.
To reduce accident severity, each highway administration department strengthens highway administration, increases road monitoring dynamics, complete
Traffic safety facilities have been apt to it, wherein crash bearer is an important safety devices, and vehicle collision energy can be absorbed in it, and makes vehicle
Changing driving direction avoids occupant by grievous injury, reduces accident severity, on the other hand also by its surface color and
Graphical symbol plays warning and inducing action.
Currently, the material for being used to prepare crash bearer is armored concrete, it is divided into prefabrication type or cast in situs type.Due to anti-
It hits pier and needs to bear multiple corrosiveness, especially north city bridge, more to bear roadway pollutants, change cryosel to reinforcing bar
Corrosion.And the durability of conventional rebar concrete crash bearer concrete itself is poor, and since crash bearer surface is abnormal shape,
In casting concrete process of vibrating, reinforcing bar is caused to deviate, concrete cover is partially thin, or even leakage muscle phenomenon, further reduces
Antiseptic property.So that being carbonized in atmosphere, change cryosel, under Frozen-thawed cycled, vehicle exhaust etc. corrode, is just needed after a period of time of being on active service
It frequently to repair or protect, the crash bearer after repairing needs to be repaired again after being on active service one shorter time.This
It can not be completely enclosed when not only causing the waste of manpower and material resources, while reparation construction can bring the congestion of road, and constructing
Road also leaves very big security risk.
Reactive Powder Concrete (Reactive Powder Contrete, be abbreviated as RPC) is after high intensity, and high-performance is mixed
After solidifying soil, a kind of successful high intensity is studied by French Bouygues (Bouygues) company in twentieth century end, high tenacity, is resisted
Freeze thawing, excellent in te pins of durability and the novel super-high reinforced concrete with broad prospect of application.RPC is mainly by cement, quartz sand, quartz
Powder, silicon ash, steel fibre and high efficiency water reducing agent composition, using made of molding appropriate and maintaining process.
The distinguishing feature of RPC is its high intensity, high tenacity, highly resistance buckling strength and high-durability, so it will become
The emphasis of current concrete field research will also become an advantageous selection of substitution existing concrete.Current country RPC is main
Side walk slab, cable trench cover board and pedestrian guardrail for the application product of non-structural part, such as on railroad bridge.
Summary of the invention
It is an object of the present invention to provide a kind of crash bearer, durability with higher solves existing concrete crash bearer
The easily peelable destruction that falls off in surface, needs the problem of frequently repairing.
In the prior art, the deficiency that conventional crash bearer has durability poor, for the repairing of this crash bearer,
Due to protective coating endurance issues, the erosion of chloride ion etc. cannot be prevent completely；And organic coating itself is easy to aging, uses
The time limit is short, and after season cracking, the cracking of the conventional crash bearer of concrete preparation continues；When being repaired using mending mortar,
Since execution conditions are poor, construction quality not can guarantee, and be fallen off after causing a period of time.
Crash bearer is directly prepared according to RPC material (Reactive Powder Concrete), the durability that can solve crash bearer is asked
Topic, but since RPC material price is expensive, be difficult to realize in engineer application.Therefore the present invention uses Reactive Powder Concrete
The high durable crash bearer backplate of preparation, crash bearer core still use the concrete material as existing crash bearer, not only may be used
To solve the endurance issues of crash bearer, and it is avoided that the high heavy price of the crash bearer using the preparation of overall activity powder concrete
Lattice.Therefore, the present invention is by above structure, so that crash bearer of the invention durability with higher, solves existing coagulation
The easily peelable destruction that falls off in native crash bearer surface, needs the problem of frequently repairing；And crash bearer of the invention base during use
Originally it is not required to safeguard, without brushing any protective coating.
The present invention solves technical problem and adopts the following technical scheme that a kind of crash bearer comprising crash bearer core and anticollision
Pier backplate；
The crash bearer backplate is fixed on the crash bearer core from the side of the crash bearer backplate；
Wherein, the crash bearer backplate is prepared using Reactive Powder Concrete.
Optionally, interfacial agents are provided between the crash bearer backplate and crash bearer core.
Optionally, the crash bearer backplate is internally provided with reinforcement anti-crack net, and the reinforcement anti-crack net is along the crash bearer
The length direction of backplate is arranged.
Optionally, two pieces of crash bearer backplates are fixed on the crash bearer core from the left and right sides or side respectively.
Optionally, the crash bearer backplate is connected to the crash bearer core by connector；And/or the crash bearer shield
Plate is connected to the crash bearer core by expansion anchoring bolt and injection slurry.
The present invention solves the preparation method that technical problem also adopts the following technical scheme that a kind of crash bearer comprising following
Step:
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete, and mold；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
In the mold prepared to step S10, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious bubble
Overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S20 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
S40, the crash bearer for the concrete preparation for needing to repair is rejected into surface fracture part, forms crash bearer core；
S50, the crash bearer core surface after step S40 processing get slip casting anchor hole, position and reactive powder
Slip casting anchoring hole site on the crash bearer backplate of concrete preparation is overlapped；
S60, crash bearer backplate is firmly pacified onto the crash bearer core, is applied then along gap surrounding between the two
Binder is smeared, and reserves gas vent at top；
S70, expansion anchoring bolt is inserted into row's slip casting anchor hole on crash bearer core top, is anchored；
S80, row's slip casting anchor hole in crash bearer core lower part carry out grouting operation, until injection slurry is emitted from gas vent
Out, stop slip casting；The concrete that slip casting can not only cut crash bearer core is repaired, while can also fill anticollision
Gap between pier backplate and crash bearer core；
S90, expansion anchoring bolt is inserted into row's slip casting anchor hole of crash bearer core lower part, is anchored, it is finally right
The surface of slip casting anchor hole carries out repairing treatment.
The present invention solves the preparation method that technical problem also adopts the following technical scheme that a kind of crash bearer comprising following
Step:
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, stirring is made with certain plasticity
Slurry, and the uniformly cloth on core model；
S30, it will be molded on core model outside, carry out compression-vibration shaping；
S40, crash bearer backplate semi-finished product prepared by the Reactive Powder Concrete prepared in step S30 are carried out according to the rules
Maintenance, is made crash bearer backplate；
S50, the concrete crash bearer repaired will be needed to reject surface fracture part as requested, forms crash bearer core；
S60, the crash bearer core surface after step S50 processing get slip casting anchor hole, position and reactive powder
Slip casting anchoring hole site on the crash bearer backplate of concrete preparation is overlapped；
S70, crash bearer backplate is firmly pacified onto the crash bearer core, is applied then along gap surrounding between the two
Binder is smeared, and reserves gas vent at top；
S80, expansion anchoring bolt is inserted into row's slip casting anchor hole on crash bearer core top, is anchored；
S90, row's slip casting anchor hole in crash bearer core lower part carry out grouting operation, until injection slurry is emitted from gas vent
Out, stop slip casting；The concrete that slip casting can not only cut crash bearer core is repaired, while can also fill anticollision
Gap between pier backplate and crash bearer core；
S95, expansion anchoring bolt is inserted into row's slip casting anchor hole of crash bearer core lower part, is anchored, it is finally right
The surface of slip casting anchor hole carries out repairing treatment.
The present invention solves the preparation method that technical problem also adopts the following technical scheme that a kind of crash bearer comprising following
Step:
S10, in external mold and core model and Reactive Powder Concrete contact surface brushing release agent, connector is put into core model
In fixation hole, it then will reinforce anti-crack net and be attached with connector, finally molded；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
Into the ready molds of step S10 institute, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious gas
Bubble overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S20 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
S40, the crash bearer apron internal surface brushing interfacial agents prepared in Reactive Powder Concrete are applied on pouring forms surface
Brush release agent；
Steel reinforcement cage is placed above in S50, the pouring forms in bottom, is then attached steel reinforcement cage and connector, to fill
The pouring forms of two sides, are finally placed into position by the position for dividing fixed crash bearer backplate；
S60, the fresh concrete with certain fluidity is poured in Reactive Powder Concrete backplate and pouring forms group
At cavity in, then carry out vibrating keeping its closely knit；
S70, it the crash bearer for preparing completion in step S60 is placed in care environments is conserved.
The present invention solves the preparation method that technical problem also adopts the following technical scheme that a kind of crash bearer comprising following
Step:
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, stirring is made with certain plasticity
Slurry, and the uniformly cloth on core model；
S30, it will be molded on core model outside, carry out compression-vibration shaping；
S40, it will be supported according to the rules in step S30 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
S50, the crash bearer apron internal surface brushing interfacial agents prepared in Reactive Powder Concrete are applied on pouring forms surface
Brush release agent；
S60, pouring forms are laid in the bottom of crash bearer backplate, are then placed into position the pouring forms of two sides；
S70, the crash bearer backplate that the fresh concrete with certain fluidity is poured in Reactive Powder Concrete preparation
In the cavity of pouring forms composition, then carry out vibrating keeping its closely knit；
S80, it the crash bearer for preparing completion in step S70 is placed in care environments is conserved.
The present invention solves the preparation method that technical problem also adopts the following technical scheme that a kind of crash bearer comprising following
Step:
S10, in external mold and core model and Reactive Powder Concrete contact surface brushing release agent, connector is put into core model
In fixation hole, it then will reinforce anti-crack net and be attached with connector, finally molded；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
Into the ready molds of step S10 institute, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious gas
Bubble overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S30 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
S40, in crash bearer apron internal surface brushing interfacial agents；
S50, steel reinforcement cage is placed on crash bearer core predetermined position, is then attached steel reinforcement cage and connector,
The position of crash bearer backplate can sufficiently be fixed；
S60, sliding formwork is moved to the crash bearer backplate opposite placed；
S70, the fresh concrete with certain plasticity is poured in the cavity of crash bearer backplate and sliding formwork composition, then
Vibrate keeps its closely knit；
S80, step S40, step S50, step S60 and step S70 are repeated, until perfusion terminates, in fresh concrete table
Face oversite concrete curing film or gunning concrete curing agent.
The invention has the following beneficial effects:
1, for the crash bearer backplate of repairing type, by expansion anchoring bolt and injection slurry connection type, make the external world
Erosion source can not be invaded again in former concrete crash bearer, can increase the service life of existing crash bearer, and this crash bearer backplate
Will not aging, it is easy for construction, simply, reduce maintenance cost.Mounting means is anchored, solves the problems, such as that in-site installation is fixed.Pass through
Cavity slip casting, solves the problems, such as voiding problem and installation error.
2, it for stencil-like crash bearer backplate, can largely increase the service life of crash bearer, make
It for surface layer template, directly pours, ensure that the thickness and quality of surface layer, and crash bearer backplate and crash bearer core of the invention is equal
For concrete material, bonding is good, not only reduces the usage amount of template, and reduce striking time.
Detailed description of the invention
Fig. 1 is repairing type crash bearer backplate and its prepare schematic diagram prepared by Reactive Powder Concrete of the invention；
Fig. 2 shows for the structure that the crash bearer backplate of repairing type Reactive Powder Concrete of the invention is installed on crash bearer core
It is intended to；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is stencil-type crash bearer backplate and its prepare schematic diagram prepared by Reactive Powder Concrete of the invention；
Fig. 5 is prefabrication stencil-type Reactive Powder Concrete crash bearer backplate construction schematic diagram of the invention；
Fig. 6 is the left view of Fig. 5
Fig. 7 is cast in situs stencil-type Reactive Powder Concrete crash bearer backplate construction schematic diagram of the invention；
Fig. 8 is the left view of Fig. 7；
The mark in the figure shows: 1- crash bearer backplate；2- external mold；3- slip casting anchor hole；4- core model；5- reinforces anti-crack net；
6- bonding agent；7- gas vent；8- crash bearer core；9- expands anchoring bolt；10- connector；11- fresh concrete；12- reinforcing bar
Cage；13- pouring forms；14- sliding formwork；15- interfacial agents.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to examples and drawings.
Embodiment 1
Present embodiments provide a kind of crash bearer, including crash bearer core and crash bearer backplate；The crash bearer backplate is
Two pieces, two pieces of crash bearer backplates are fixed on the crash bearer core from left and right side respectively；Wherein, the crash bearer
Backplate is prepared using Reactive Powder Concrete；Certainly, in the present embodiment, the crash bearer backplate may be one piece, when described
When crash bearer backplate is one piece, it is fixed on the crash bearer core from the side of the crash bearer core, such as left side.
In the present embodiment, optionally, the crash bearer backplate is internally provided with reinforcement anti-crack net, the reinforcement anti-crack net edge
The length direction of the crash bearer backplate is arranged；To improve the intensity of the crash bearer backplate by the reinforcement anti-crack net；And
Preferably, the reinforcement anti-crack net is fiberglass gridding cloth, carbon fiber mesh fabric or steel wire.
In the present embodiment, the crash bearer backplate is connected to the crash bearer core by expansion anchoring bolt and injection slurry,
To the bonding strength with higher between the crash bearer backplate and crash bearer core.
In the present embodiment, interfacial agents are provided between the crash bearer backplate and crash bearer core, to pass through the interface
Agent preferably bonds the crash bearer backplate and crash bearer core, to improve between the crash bearer backplate and crash bearer core
Bonding strength.
In the present embodiment, the crash bearer backplate is connected to the crash bearer core by connector；And the connector
One end be fixed on the crash bearer core, the other end is fixed on the crash bearer backplate, to further increase described
Bonding strength between crash bearer backplate and crash bearer core.
In the present embodiment, the crash bearer backplate with a thickness of 0.5-4cm so that the crash bearer backplate have it is preferable
Durability, and as far as possible realize protection effect under the premise of, as much as possible save Reactive Powder Concrete usage amount,
To improve the economy of crash bearer of the invention.
Embodiment 2
With reference to Fig. 1-3, a kind of preparation method of crash bearer using repairing type crash bearer backplate is present embodiments provided,
Including two large divisions, that is, prepares crash bearer backplate and crash bearer backplate is installed on crash bearer core；It is anti-wherein to prepare repairing type
The step of hitting pier backplate may include following two:
The first: perfusion
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete, and mold；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
In the mold prepared to step S10, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious bubble
Overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S20 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
Second: pressure vibration method
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, stirring is made with certain plasticity
Slurry, and the uniformly cloth on core model；
S30, it will be molded on core model outside, carry out compression-vibration shaping；
S40, the crash bearer backplate semi-finished product that step S30 is prepared by Reactive Powder Concrete are supported according to the rules
Shield, is made crash bearer backplate；
In the present embodiment, when preparing crash bearer backplate by above two method, between step S10 and step S20
Including step S15: core model and the horizontally disposed a plurality of width 20-100mm of Reactive Powder Concrete contact surface, height degree 2-
The horizontal stripe of 20mm can make the Reactive Powder Concrete crash bearer apron internal surface prepared have indent and convex translot in this way,
The bonding connection between crash bearer backplate and normal concrete crash bearer core for increasing Reactive Powder Concrete preparation
Energy.
Moreover, further, slip casting anchor hole is provided with above crash bearer backplate, the slip casting and anchoring for the later period make
With；And/or reinforcement anti-crack net can be set inside crash bearer backplate, material can be fiberglass gridding cloth, carbon fibre web
Ge Bu, steel wire etc..
Repairing type crash bearer backplate, which is installed on crash bearer core, to use following methods:
S10, the crash bearer core of the concrete repaired preparation will be needed to reject surface fracture part as requested；
S20, slip casting anchor hole, the crash bearer of position and Reactive Powder Concrete preparation are got in crash bearer core surface
Slip casting anchoring hole site on backplate is overlapped；
S30, crash bearer backplate is firmly pacified onto the crash bearer core, is applied then along gap surrounding between the two
Binder is smeared, and reserves gas vent at top；
S40, expansion anchoring bolt is inserted into row's slip casting anchor hole on crash bearer core top, is anchored；
S50, row's slip casting anchor hole in crash bearer core lower part carry out grouting operation, until injection slurry is emitted from gas vent
Out, stop slip casting；The concrete that slip casting can not only cut crash bearer core is repaired, while can also fill anticollision
Gap between pier backplate and crash bearer core；
S60, expansion anchoring bolt is inserted into row's slip casting anchor hole of crash bearer core lower part, is anchored, it is finally right
The surface of slip casting anchor hole carries out repairing treatment.
Embodiment 3
With reference to Fig. 4-6, a kind of preparation method of crash bearer using stencil-type crash bearer backplate is present embodiments provided, is used
Make crash bearer in road, can move, but negligible amounts, need two sides all to use Reactive Powder Concrete material, generally in work
Factory carries out prefabricated comprising two large divisions prepares crash bearer backplate and forms crash bearer core inside crash bearer backplate；Its
The step of middle preparation stencil-type crash bearer backplate may include following two:
The first: perfusion
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete, and mold；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
In the mold prepared to step S10, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious bubble
Overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S20 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
Second: pressure vibration method
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, stirring is made with certain plasticity
Slurry, and the uniformly cloth on core model；
S30, it will be molded on core model outside, carry out compression-vibration shaping；
S40, the crash bearer backplate semi-finished product that step S30 is prepared by Reactive Powder Concrete are supported according to the rules
Shield, is made crash bearer backplate；
In the present embodiment, when preparing crash bearer backplate by above two method, between step S10 and step S20
Including step S15: core model and the horizontally disposed a plurality of width 20-100mm of Reactive Powder Concrete contact surface, height degree 2-
The horizontal stripe of 20mm can make the Reactive Powder Concrete crash bearer apron internal surface prepared have indent and convex translot in this way,
The bonding connection between crash bearer backplate and normal concrete crash bearer core for increasing Reactive Powder Concrete preparation
Energy.
Moreover, further, reinforcement anti-crack net can be set inside crash bearer backplate, material can be glass fiber mesh
Ge Bu, carbon fiber mesh fabric, steel wire etc..
In the present embodiment, the reinforcement cracking resistance (steel wire) is also provided with connector, the material of the connector on the net
It can be metal, high strength fibre etc..
Crash bearer core is formed between the stencil-type crash bearer backplate, general prefabrication can pass through following steps
Realize (perfusion direction is downward):
S10, the crash bearer apron internal surface brushing interfacial agents prepared in Reactive Powder Concrete are applied on pouring forms surface
Brush release agent；
Steel reinforcement cage is placed above in S20, the pouring forms in bottom, is then attached steel reinforcement cage and connector, to fill
The pouring forms of two sides, are finally placed into position by the position for dividing fixed crash bearer backplate；
S30, the crash bearer backplate that the fresh concrete with certain fluidity is poured in Reactive Powder Concrete preparation
In the cavity of pouring forms composition, then carry out vibrating keeping its closely knit；
S40, it the crash bearer for preparing completion in step S30 is placed in care environments is conserved.
Embodiment 4
With reference to Fig. 4-6, a kind of preparation method of crash bearer using stencil-type crash bearer backplate is present embodiments provided, is used
Make crash bearer in road, can move, but negligible amounts, need two sides all to use Reactive Powder Concrete material, generally in work
Factory carries out prefabricated comprising two large divisions prepares crash bearer backplate and forms crash bearer core inside crash bearer backplate；Its
The step of middle preparation stencil-type crash bearer backplate may include:
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete, and mold；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
In the mold prepared to step S10, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious bubble
Overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S20 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
In the present embodiment, when preparing crash bearer backplate by above two method, between step S10 and step S20
Including step S15: core model and the horizontally disposed a plurality of width 20-100mm of Reactive Powder Concrete contact surface, height degree 2-
The horizontal stripe of 20mm can make the Reactive Powder Concrete crash bearer apron internal surface prepared have indent and convex translot in this way,
The bonding connection between crash bearer backplate and normal concrete crash bearer core for increasing Reactive Powder Concrete preparation
Energy.
Moreover, further, reinforcement anti-crack net can be set inside crash bearer backplate, material can be glass fiber mesh
Ge Bu, carbon fiber mesh fabric, steel wire etc..
In the present embodiment, the reinforcement cracking resistance (steel wire) is also provided with connector, the material of the connector on the net
It can be metal, high strength fibre etc..
Crash bearer core is formed between the stencil-type crash bearer backplate, general prefabrication can pass through following steps
Realize (perfusion direction is downward):
S10, the crash bearer apron internal surface brushing interfacial agents prepared in Reactive Powder Concrete are applied on pouring forms surface
Brush release agent；
S20, the crash bearer backplate that the fresh concrete with certain fluidity is poured in Reactive Powder Concrete preparation
In the cavity of pouring forms composition, then carry out vibrating keeping its closely knit；
S30, it the crash bearer for preparing completion in step S20 is placed in care environments is conserved.
Embodiment 5
With reference to Fig. 4, Fig. 7 and Fig. 8, a kind of preparation of crash bearer using stencil-type crash bearer backplate is present embodiments provided
Method, is usually fixed, cast-in-site as roadside crash bearer, and amount is bigger, it is only necessary to use reactive powder coagulation on one side
Soil material.It includes two large divisions, that is, prepares crash bearer backplate and form crash bearer core inside crash bearer backplate；Its
The step of middle preparation stencil-type crash bearer backplate, is as follows:
S10, in external mold and core model and Reactive Powder Concrete contact surface brushing release agent, connector is put into core model
In fixation hole, it then will reinforce anti-crack net and be attached with connector, finally molded；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, even slurry is made in stirring, is perfused
Into the ready molds of step S10 institute, will be die-filling after crash bearer backplate put and vibrate on a vibration table, vibrate without obvious gas
Bubble overflow, and not bleeding when stop；
S30, it will be supported according to the rules in step S30 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete
Shield, is made crash bearer backplate；
Crash bearer core is formed between the stencil-type crash bearer backplate, general cast in situs can pass through following steps
Realize (perfusion direction is downward):
S10, in crash bearer apron internal surface brushing interfacial agents；
S20, steel reinforcement cage is placed on crash bearer core predetermined position, is then attached steel reinforcement cage and connector,
The position of crash bearer backplate can sufficiently be fixed；
S30, sliding formwork is moved to the crash bearer backplate opposite placed；
S40, the fresh concrete with certain plasticity is poured in the cavity of crash bearer backplate and sliding formwork composition, then
Vibrate keeps its closely knit；
S50, step S10, step S20, step S30 and step S40 are repeated, until perfusion terminates, in fresh concrete table
Face oversite concrete curing film or gunning concrete curing agent.
Further, Reactive Powder Concrete backplate is damaged in fresh concrete filling process in order to prevent, can be by Fig. 4
In external mold be fitted in outside Reactive Powder Concrete backplate as auxiliary template and face it and protected.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (1)
1. a kind of preparation method of crash bearer, which comprises the following steps:
S10, the face brushing release agent contacted on external mold and core model with Reactive Powder Concrete；
S15, core model and the horizontally disposed a plurality of width 20-100mm of Reactive Powder Concrete contact surface, height 2-20mm's
Horizontal stripe；
S20, the material for preparing Reactive Powder Concrete is put into forced stirrer, the slurry with certain plasticity is made in stirring
Body, and the uniformly cloth on core model；
S30, it will be molded on core model outside, carry out compression-vibration shaping；
S40, it will be conserved according to the rules in step S30 by crash bearer backplate semi-finished product prepared by Reactive Powder Concrete,
Crash bearer backplate is made；
S50, the crash bearer apron internal surface brushing interfacial agents prepared in Reactive Powder Concrete, it is de- in pouring forms external coating
Mould agent；
S60, pouring forms are laid in the bottom of crash bearer backplate, are then placed into position the pouring forms of two sides；
S70, the crash bearer backplate that the fresh concrete with certain fluidity is poured in Reactive Powder Concrete preparation and filling
In the cavity of injection molded plate composition, then carry out vibrating keeping its closely knit；
S80, it the crash bearer for preparing completion in step S70 is placed in care environments is conserved.
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| CN201510736789.1A Active CN105350475B (en) | 2015-11-03 | 2015-11-03 | Crash bearer and preparation method thereof |
| CN201710924197.1A Active CN107558408B (en) | 2015-11-03 | 2015-11-03 | The preparation method of crash bearer |
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| CN106544971A (en) * | 2016-10-13 | 2017-03-29 | 武汉理工大学 | Cylinder impact resistance protective |
| CN108748630A (en) * | 2018-08-22 | 2018-11-06 | 国网安徽省电力有限公司滁州供电公司 | Prefabricated Protection Pier makes mold, Protection Pier and preparation method |
| CN109356056B (en) * | 2018-12-10 | 2023-11-24 | 潘晓东 | Safety structure for open section of central dividing strip of expressway |
| CN109610352A (en) * | 2019-02-01 | 2019-04-12 | 中庆建设有限责任公司 | A kind of bridge-collision-avoidance wall guard member |
| CN109826139A (en) * | 2019-03-25 | 2019-05-31 | 沈阳建筑大学 | A kind of lightweight assembled RPC anti-collision wall wall and its construction method |
| CN111910514B (en) * | 2020-05-27 | 2021-12-10 | 山西省交通科技研发有限公司 | Bridge anti-collision wall protection and repair system and material |
| CN112504599B (en) * | 2020-11-20 | 2023-09-22 | 陕西煤业化工技术研究院有限责任公司 | Friction energy absorption plate collision test wall and prefabrication and construction installation process thereof |
| CN114411596A (en) * | 2022-02-25 | 2022-04-29 | 北京固瑞恩科技有限公司 | Concrete anti-collision pier repairing method |
| CN115652781A (en) * | 2022-12-26 | 2023-01-31 | 北京新桥技术发展有限公司 | Bridge anti-collision guardrail, bridge anti-collision panel and construction method |
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| CN107653777B (en) | 2019-07-26 |
| CN107553692A (en) | 2018-01-09 |
| CN107558408B (en) | 2019-07-26 |
| CN107553693B (en) | 2019-07-26 |
| CN105350475B (en) | 2017-10-17 |
| CN107558408A (en) | 2018-01-09 |
| CN107653777A (en) | 2018-02-02 |
| CN107553693A (en) | 2018-01-09 |
| CN105350475A (en) | 2016-02-24 |
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