CN109138162A - A kind of prefabricated arches and production method - Google Patents
A kind of prefabricated arches and production method Download PDFInfo
- Publication number
- CN109138162A CN109138162A CN201811044917.6A CN201811044917A CN109138162A CN 109138162 A CN109138162 A CN 109138162A CN 201811044917 A CN201811044917 A CN 201811044917A CN 109138162 A CN109138162 A CN 109138162A
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- Prior art keywords
- bfrp
- composition
- arch
- grid material
- glue
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/32—Arched structures; Vaulted structures; Folded structures
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The present invention relates to a kind of prefabricated arches and production methods, its prefabricated arches includes reinforced concrete arch, BFRP grid material, gluing oxidant layer and several reinforcing members, BFRP grid material is bonded in the surface of reinforced concrete arch by gluing oxidant layer, each reinforcing member at least straddles on a fibre bundle for forming BFRP grid material, and BFRP grid material is suppressed in the surface for the concrete arch being bonded, form corresponding reinforcing position.Its production method includes: uniformly to smear substrate glue and dipping glue on screwing steel bars concrete arch surface, and BFRP grid material is rolled to vault with roller upwards along the bottom end of arch surface two sides, it is allowed to sufficiently be pasted on arch inner surface, drilling position mark is carried out again and bores fixation hole, and reinforcing member is straddled by fixation hole and is compressed on BFRP grid material.Advantage is to substantially increase the structure overall mechanical properties of prefabricated arches.
Description
Technical field:
The present invention relates in civil engineering protection works field more particularly to a kind of prefabricated arches and production method.
Background technique:
Domes become civil engineering and underground are anti-since it has the characteristics that stress performance is good, controls convenient for engineering construction
One of common structure type in nurse's journey.But the structure is in civil engineering, and over time, material gradually aging makes it
Overall structure is poor, and structural bearing capacity will be caused to decline；And in protection works, it is increasingly mentioned with the attack precision of Penetration weapon
It rises, substantially increases penetration and explosion to the failure probability of engineering structure in soil.
Traditional arch structure is the requirement for improving bearing capacity and stiffness, is had using Strengthening by Steel-Packing mode or steel-bonded reinforcement
Mode.It will increase original structure self weight after reinforced with external steel encased complex process and reinforcing, and reduce usable floor area, and steel-bonded reinforcement
Method, can because steel bonding glue aging and steel easy-to-rust the problem of, make structure in use environment and service life by very big
Limitation.
Summary of the invention:
In view of the above shortcomings of the prior art, the present invention provides a kind of prefabricated arches and production method, and specific technical solution is such as
Under:
The prefabricated arches, including reinforced concrete arch, BFRP grid material, gluing oxidant layer and several reinforcing members (3), it is described
BFRP grid material is bonded in the surface of reinforced concrete arch by gluing oxidant layer, and each reinforcing member, which at least straddles, is forming BFRP
On a piece fibre bundle of grid material, and BFRP grid material is suppressed in the surface for the concrete arch being bonded, formed corresponding
Reinforce position.
Further, each reinforcing member straddles the infall in grid material.
Further, when the chord width (span) of the reinforced concrete arch is 1~2m, the thickness of corresponding BFRP grid material
Degree is 1~3mm；The chord width of the reinforced concrete arch be 2~3m when, corresponding BFRP grid material with a thickness of 3~5mm；
The chord width of the reinforced concrete arch be 3~5m when, corresponding BFRP grid material with a thickness of 5~10mm.
Further, every square metre of reinforcing position is no less than 20.
Further, the reinforcing position is distributed on the BFRP grid material (4) for being bonded in the surface of reinforced concrete arch.
Further, the both ends of the prefabricated arches length direction be respectively provided with the prefabricated arches along its length according to
The connecting groove and connection bump of secondary connection, the connecting groove and connection bump are adapted.
Further, the reinforcing member includes anchor bolt and press strip, and the both ends of the press strip are at least respectively equipped with a hole, anchor
The hole that bolt passes through on press strip is fixed on reinforced concrete arch, and press strip is straddled and is compressed on to form BFRP grid material at least
On a piece fibre bundle.
Further, the reinforced concrete arch is equipped with fixation hole compatible with pitch of holes is connected on press strip；It is described
Anchor bolt includes tapping screw and expansion tube, and expansion tube is fixed in the fixation hole, and tapping screw passes through the connecting hole on press strip
Spiral is connected in corresponding expansion tube；Or it is fixed on including bolt, nut and the spigot formed by chemical mode, bolt by spigot
In the fixation hole, upper end, which is stretched out outside fixation hole and worn, connects corresponding connecting hole back spin connected nut on press strip.
Further, the gluing oxidant layer includes the primer set gradually in outward direction from the surface of reinforced concrete arch
Layer and solid glue layer；Substrate glue on interior arch surface of the primer layer by being coated in reinforced concrete arch is formed, the solid glue layer
It is formed by the dipping glue being coated on primer layer；Primer layer with a thickness of 0.5~1mm, solid glue layer with a thickness of 1~2mm.
The dipping glue that solid glue layer is formed in the prefabricated arches, is mixed by 1 mass parts A composition and 2 mass parts composition Bs
It is combined into；Every mass parts A composition includes the component materials of following proportion by weight: propane type epoxy resin of di phenolic group 95~
105 parts, 14~16 parts of propylene oxide benzylic ether, 1.9~2.1 parts of γ-glycidyl ether oxygen propyl trimethoxy silicane, nanoscale
6~8 parts of silica, 2.8~3.1 parts of nano activated calcium carbonate, 28~32 parts of torispherical silica powder；Every mass parts B combination
Object includes the component materials of following proportion by weight: 95~105 parts of Versamid, 9.5~10.5 parts of 2,4,6 tri phenol,
6~8 parts of nanometer grade silica, 2.8~3.1 parts of nano activated calcium carbonate, 28~32 parts of torispherical silica powder；
The production method of the dipping glue, includes the following steps:
1) component materials included by A composition and composition B are obtained by proportion by weight；
2) A composition and composition B are made
The making step of A composition includes:
(1) preparation of base-material and powder
The propane type epoxy resin of di phenolic group and propylene oxide benzylic ether that will acquire are mixed and stirred for uniformly, forming the first mixed base
Material；
γ-the glycidyl ether oxygen propyl trimethoxy silicane that will acquire, nanometer grade silica, nano activated calcium carbonate,
Torispherical silica powder stirs evenly, and forms the first mixed powder；
(2) it is stirred
The first mixed powder is added when stirring the first mixed resin, until stirring evenly, forms A composition bottom material；
(3) ladder heating, natural cooling processing
A composition bottom material is heated to 55 DEG C~65 DEG C under stirring, and is kept for 0.8~1.2 hour；It is again heated to 75 DEG C
~85 DEG C, and kept for 1.8~2.3 hours, 150 DEG C are then again heated to, and kept for 0.8~1.2 hour；Then it is cooled to room naturally
Temperature obtains A composition；
The making step of composition B includes:
(1) preparation of base-material and powder
The Versamid that will acquire and 2,4,6- trisphenols are mixed and stirred for uniformly, forming the second mixed resin；
γ-the glycidyl ether oxygen propyl trimethoxy silicane that will acquire, nanometer grade silica, nano activated calcium carbonate,
Torispherical silica powder stirs evenly, and forms the second mixed powder；
(2) it is stirred
The second mixed powder is added when stirring the second mixed resin, until stirring evenly, forms composition B bottom material；
(3) ladder heating, natural cooling processing
Composition B bottom material is heated to 55 DEG C~65 DEG C under stirring, and is kept for 0.8~1.2 hour；It is again heated to 75 DEG C
~85 DEG C, and kept for 1.8~2.3 hours, 150 DEG C are then again heated to, and kept for 0.8~1.2 hour；Then it is cooled to room naturally
Temperature obtains composition B；
3) A composition and composition B are mixed
It is mixed after obtained A composition and composition B are weighed by the proportion by weight of 2:1, until stirring is equal
It is even, obtain dipping glue.
The production method of prefabricated arches, includes the following steps:
1) screwing steel bars concrete arch；
2) flatness reconditioning is carried out to the arch surface of reinforced concrete arch, makes flatness not less than 5mm/m, and to the arch table of reconditioning
Face dedusting；
3) substrate glue is uniformly applied to arch surface, after the substrate glue dry to touch for encircleing surface, then uniformly smears dipping glue；
4) BFRP grid material compatible with arch surface is rolled to vault with roller upwards along the bottom end of arch surface two sides, is made
BFRP grid material is sufficiently pasted on arch surface face, and makes to impregnate glue full penetration into BFRP grid material；
5) after glue dry to touch to be impregnated, the mark of bore position is carried out, and drill one by one by the bore position of mark, if being formed
Dry fixation hole；
6) reinforcing member is straddled by fixation hole and is compressed on BFRP grid material；
7) dipping glue is uniformly smeared in BFRP grid material upper surface, forms protective layer；
The protective layer thickness is identical as the thickness of BFRP grid, and cannot be less than 5mm.
The present invention is bonded BFRP grid on arch surface by the way that domes to be fabricated to prefabricated reinforced concrete arch
Material and by reinforcing member make it is this bonding it is more solid, thus make arches circumferential direction have higher tensile strength, bear higher drawing
Stress, and the appearance and extension of structural cracks can be effectively suppressed, arches overall structural strength is thus improved, so that domes have
There are longer service life, higher structure ductility, stronger Structural Energy Dissipation ability, higher impact resistance, effectively enhancing
Arches overall structural strength inhibits structure crack, prevents rubble from splashing, to the people of protection, protection in arch protection works
The safety of member and goods and materials plays an important role；It for its self weight of the BFRP grid material of reinforcing and takes up space and reinforced concrete simultaneously
Soil arch is compared to negligible；Special equipment, simple process are not needed when construction, it is easy to accomplish, it is at low cost.In later maintenance
It is not likely to produce etching problem
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of the prefabricated arches of the present invention.
Fig. 2 is the structural schematic diagram of BFRP grid material used in one embodiment of the invention.
Fig. 3 be reinforcing member straddle and on being compressed on BFRP grid material and bonding concrete arch surface on structure
Schematic diagram.
Fig. 4 is the A direction view of prefabricated arches shown in Fig. 1.
Fig. 5 is cross-sectional view when two prefabricated arches shown in FIG. 1 are connected with each other.
Fig. 6 is structural schematic diagram figure when two prefabricated arches shown in FIG. 1 are connected with each other.
Fig. 7 is a kind of structural schematic diagram of reinforcing member.
Fig. 8 is the structural schematic diagram of another reinforcing member.
Specific embodiment:
With reference to the accompanying drawing and specific embodiment the present invention is further illustrated.
Embodiment 1 --- prefabricated arches structure
Such as Fig. 1, a specific prefabricated arches, if mainly by reinforced concrete arch 1, BFRP grid material 4, gluing oxidant layer 2 and
Dry reinforcing member 3 forms.BFRP grid material 4 is encircleed on surface by the inside that gluing oxidant layer 2 is bonded in reinforced concrete arch 1, if
Dry reinforcing member 3 is distributed on BFRP grid material 4, and each reinforcing member 3 is at least straddled in a fibre for forming BFRP grid material
It ties up on beam, and suppresses BFRP grid material on arch face, forming corresponding reinforcing position in the concrete arch 1 being bonded.
Such as Fig. 2, BFRP grid material 4 is woven by the meridional fibers 4a of length direction and the parallel fiber 4b of width direction
At the meridional fibers 4a and parallel fiber 4b of the present embodiment are the identical flat line of size, i.e. rectangular in cross-section, and thickness
It is the 1/8~1/6 of width.When the span of arch structure increases, the ability of carrying opposite can weaken, and the present invention is for different
Span scope gives the thickness of corresponding BFRP grid material, the substantially thickness of meridional fibers 4a or parallel fiber 4b, when
When the span (span) of reinforced concrete arch (1) is 1~2m, the fiber thickness of corresponding BFRP grid material (2) is 1~3mm.
When the span (span) of reinforced concrete arch (1) is 2~3m, the fiber thickness of corresponding BFRP grid material (2) is 3~
5mm.When the span (span) of reinforced concrete arch (1) is 3~5m, the fiber thickness of corresponding BFRP grid material (2) is 5
~10mm.
Such as Fig. 3, BFRP grid is evenly arranged on for reinforcing the reinforcing member 3 Nian Jie with reinforced concrete arch 1 of BFRP grid material 4
On material 4, a preferred embodiment is the infall straddled each reinforcing member 3 in grid material, and the friendship of every row
Be at fork it is interlaced, in order to reach preferable consolidation effect, every square decimeter of reinforcing position is no less than 20.
As its dimensional directions along length L is sequentially connected, when constructing tunnel with arches of the invention in order to mention by Fig. 4-6
Connection is respectively set at the both ends along length L of arches in the quality and efficiency of positioning, the connection of high two adjacent arches, the present embodiment
Groove 11 and connection bump 12, such as Fig. 4, the structure of connecting groove 11 and connection bump 12 is adapted.When connection, connection bump 12
It is inserted into connecting groove 11, and the end face of connection bump 12 is resisted against in the groove bottom in connecting groove 11.For convenient for grafting, sheet
The connecting groove 11 of embodiment is semi open model groove, and the depth of connecting groove 11 is less than the correspondence depth of connection bump 12,
So that connection bump 12, which is fully inserted into after connecting groove 11, also leaves gap 13, which just can be filled concrete 6, this is mixed
Solidifying soil 6 had not only been used for the connections of adjacent two arches, but can closed gap, prevent the infiltration of water.
Referring to Fig. 3 and Fig. 5 is combined, above-mentioned reinforcing member 3 includes anchor bolt 3b and press strip 3a, and the press strip 3a of the present embodiment is waist
Shape item, the both ends of the kidney-shaped item are at least respectively equipped with a hole, and anchor bolt 3b passes through the hole and is fixed on reinforced concrete arch 1, and
Press strip 3a is straddled on the fiber for being compressed on and forming BFRP grid material, the present embodiment is to straddle to be compressed on meridional fibers 4a and latitude
Line fiber 4b infall.
If Fig. 6, anchor bolt 3b may include tapping screw 3b1 and expansion tube 3b2, steel need to be bonded with when using reinforcing member 3
Reinforced concrete arch 1 is equipped with fixation hole compatible with the connection pitch of holes on press strip 3a, and expansion tube 3a2 is embedded in this and is fixed
Kong Zhong is allowed to be integrally formed with reinforced concrete arch 1, and the connecting hole spiral that tapping screw 3b1 is passed through on press strip 3a is connected to pair
It answers in expansion tube, pressure is imposed on to BFRP grid material by press strip 3a, be allowed to preferably Nian Jie with reinforced concrete arch 1.
Such as the spigot 3b5 that Fig. 7, anchor bolt 3b may also comprise bolt 3b3, nut 3b4 and formed by chemical drugs pipe, by fixation hole
It cleans out, chemical pencil is placed in fixation hole prior to bolt 3b3, and by by vinylite, quartz particles and solidification
Bolt 3b3, is fixed in fixation hole, spiral shell by the spigot 3b5 that the chemical pencil of agent composition is formed in fixation hole by spigot 3b5
The upper end bolt 3b3, which is stretched out outside fixation hole and worn, connects corresponding connecting hole back spin connected nut on press strip, equally to reach through press strip 3a
Pressure is imposed on to BFRP grid material, the purpose for keeping BFRP grid material more preferably be bonded with reinforced concrete arch 1.
Reinforced concrete arch 1 in the present invention is Nian Jie with BFRP grid material 4 by gluing oxidant layer 2, makes prefabricated arches
Overall structure performance greatly improves, thus gluing oxidant layer play the role of it is very important.Gluing oxidant layer of the invention includes from steel
The primer layer and solid glue layer that the surface of reinforced concrete arch is set gradually in outward direction, glue-line is by being coated in reinforced concrete arch
Substrate glue on interior arch surface is formed, solid glue layer by the dipping glue being coated on primer layer formed primer layer with a thickness of 0.5~
1mm, the solid glue layer with a thickness of 1~2mm.
Embodiment 2 --- production dipping glue
1) A composition is weighed by following proportion by weight and component materials that composition B is included.
Every mass parts A composition includes the component materials of following proportion by weight:
95~105 parts of propane type epoxy resin of di phenolic group；
14~16 parts of benzylic ether；
1.9~2.1 parts of γ-glycidyl ether oxygen propyl trimethoxy silicane；
6~8 parts of nanometer grade silica；
2.8~3.1 parts of nano activated calcium carbonate；
28~32 parts of torispherical silica powder；
Every mass parts composition B includes the component materials of following proportion by weight:
95~105 parts of Versamid；
9.5~10.5 parts of 2,4,6 tri phenol；
6~8 parts of nanometer grade silica；
2.8~3.1 parts of nano activated calcium carbonate；
28~32 parts of torispherical silica powder.
2) A composition and composition B are made
The making step of A composition includes:
(1) preparation of base-material and powder
Weighed propane type epoxy resin of di phenolic group and propylene oxide benzylic ether are placed in the first gluey material stirrer for mixing
Stirring, until being formed uniformly the first mixed resin.It can be 100L by treating capacity, need to continuously stir 30 minutes, reach and stir evenly
Linear relationship determine that required treating capacity reaches the time stirred evenly.
By weighed γ-glycidyl ether oxygen propyl trimethoxy silicane, nanometer grade silica, nano level active carbonic acid
Calcium, torispherical silica powder are added to the first fine material mixer and are stirred, until being formed uniformly mixed powder.Can be by treating capacity
100kg, need to continuously stir 20 minutes, reach the linear relationship that stirs evenly determine required treating capacity reach stir evenly when
Between.
(2) mixing is mixed
Above-mentioned first gluey material agitator continues to be stirred base-material on one side, is on one side added to the mixed powder having had been provided with
In the blender, until material is uniform, A composition bottom material is formed.It can be 100L by treating capacity, need to continuously stir 50 minutes, reach
Determine that required treating capacity reaches the time stirred evenly to the linear relationship stirred evenly.
(3) ladder heating, natural cooling processing
A composition bottom material is transported in the in baking oven second gluey material agitator by the first gluey material agitator,
It is heated to 55 DEG C~65 DEG C under stirring, and is kept for 0.8~1.2 hour；75 DEG C~85 DEG C are again heated to, and is kept
1.8~2.3 hours, 150 DEG C are then again heated to, and kept for 0.8~1.2 hour.Then it is cooled to room temperature naturally, obtains A combination
Object.
The making step of composition B includes:
(1) preparation of base-material and powder
By weighed Versamid and 2,4,6- trisphenols are placed in the stirring of third glue material stirrer for mixing, until
It is even, form the second mixed resin.It can be 100L by treating capacity, need to continuously stir 30 minutes, reach the linear relationship stirred evenly
Determine that required treating capacity reaches the time stirred evenly.
By weighed γ-glycidyl ether oxygen propyl trimethoxy silicane, nanometer grade silica, nano level active carbonic acid
Calcium, torispherical silica powder are added to the second fine material mixer and are stirred, until uniformly, need to generally continuously stir 20 minutes, shape
At the second mixed powder.It can be 100kg by treating capacity, need to continuously stir 20 minutes, reach the linear relationship stirred evenly and come really
Treating capacity needed for fixed reaches the time stirred evenly.
(2) it is stirred
Above-mentioned second gluey material agitator continues to be stirred base-material on one side, is on one side added to the mixed powder having had been provided with
In the blender, until material is uniform, composition B bottom material is formed.It can be 100L by treating capacity, need to continuously stir 50 minutes, reach
Determine required treating capacity, to the linear relationship stirred evenly with the time stirred evenly.
(3) ladder heating, natural cooling processing
Composition B bottom material is heated to 55 DEG C~65 DEG C under stirring, and is kept for 0.8~1.2 hour；It is again heated to 75 DEG C
~85 DEG C, and kept for 1.8~2.3 hours, 150 DEG C are then again heated to, and kept for 0.8~1.2 hour；Then it is cooled to room naturally
Temperature obtains composition B.
3) A composition and composition B are mixed
It is mixed after obtained A composition and composition B are weighed by the proportion by weight of 2:1, until stirring is equal
It is even, obtain dipping glue.
Embodiment 3 --- prefabricated arches part production method
Prefabricated arches described in embodiment 1 make in the steps below, and on the make substrate glue used is wuhan yangtze river reinforcement technique
The YZJ-CD substrate glue of Co., Ltd's production, dipping glue are made by 2 the method for embodiment.Prefabricated arches specific production step is such as
Under:
1) reinforcing bar, that is, screw-thread steel is placed in mold by screwing steel bars concrete arch, and by the concrete casting stirred evenly in this
In mold, reinforced concrete arch is formed after concrete setting is dry.
2) flatness reconditioning is carried out to the interior arch surface of reinforced concrete arch, makes flatness no more than 5mm/m, and to reconditioning
Arch surface dust afterwards.
3) substrate glue is uniformly applied to arch surface, smearing thickness is 0.5~1mm, the substrate glue touch dry on surface to be encircleed
After dry, then uniformly smear dipping glue.
4) by with the compatible BFRP grid material in arch surface along arch surface two sides bottom end with roller respectively to vault to
Upper rolling is pasted onto BFRP grid material sufficiently on interior arch surface, and makes to impregnate glue full penetration into BFRP grid material.
It is rolled upwards to vault respectively with roller along the bottom end of arch surface two sides, not only improves BFRP grid and abutted to the curved surface of arch,
It avoids the grid as caused by BFRP grid stiffness by itself from generating the phenomenon that separating with arching surface, can also prevent from unidirectionally rolling
Caused by BFRP grid deviate initial alignment.
5) after glue dry to touch to be impregnated, the mark of bore position is carried out, and drill one by one to the bore position of mark, shape
At several fixation holes；
6) reinforcing member is straddled by fixation hole and is compressed on BFRP grid material by reinforcing member；
7) protective glue is uniformly smeared in BFRP grid material upper epidermis, forms protective layer, the protective layer thickness and BFRP grid
Thickness is identical, and cannot be less than 5mm.
Claims (13)
1. a kind of prefabricated arches, it is characterised in that: including reinforced concrete arch (1), BFRP grid material (4), gluing oxidant layer (2)
With several reinforcing members (3), the BFRP grid material is bonded in the surface of reinforced concrete arch, each reinforcing by gluing oxidant layer
Part at least straddles on a fibre bundle for forming BFRP grid material, and suppresses BFRP grid material in the concrete being bonded
The surface of arch forms corresponding reinforcing position.
2. prefabricated arches according to claim 1, it is characterised in that: each reinforcing member straddles the intersection in grid material
Place.
3. prefabricated arches according to claim 1, it is characterised in that: the chord width (span) of the reinforced concrete arch (1)
When for 1~2m, corresponding BFRP grid material (4) with a thickness of 1~3mm；The chord width (span) of the reinforced concrete arch (1)
When for 2~3m, corresponding BFRP grid material (4) with a thickness of 3~5mm；The chord width (span) of the reinforced concrete arch (1)
When for 3~5m, corresponding BFRP grid material (4) with a thickness of 5~10mm.
4. prefabricated arches according to claim 1, it is characterised in that: every square metre of reinforcing position is no less than 20.
5. prefabricated arches according to claim 4, it is characterised in that: the reinforcing position, which is distributed in, is bonded in armored concrete
On the BFRP grid material (4) for encircleing the surface of (1).
6. prefabricated arches according to claim 1, it is characterised in that: the both ends of the prefabricated arches length direction are set respectively
Have and is used for the prefabricated arches sequentially connected connecting groove and connection bump along its length, the connecting groove and connection bump
It is adapted.
7. prefabricated arches according to claim 1, it is characterised in that: the reinforcing member (3) includes anchor bolt and press strip (3b),
The both ends of the press strip (3b) are at least respectively equipped with a hole, and the hole that anchor bolt (3a) passes through on press strip is fixed on reinforced concrete arch
(1) on, and press strip (3b) is straddled on at least one fibre bundle for being compressed on and forming BFRP grid material.
8. prefabricated arches according to claim 7, it is characterised in that: the reinforced concrete arch (1) is equipped with and press strip
The compatible fixation hole of pitch of holes is connected on (3b)；The anchor bolt (3a) includes tapping screw and expansion tube, and expansion tube is fixed on
In the fixation hole, the connecting hole spiral that tapping screw passes through on press strip is connected in corresponding expansion tube；Or including bolt, nut
With the spigot formed by chemical mode, bolt is fixed in the fixation hole by spigot, and upper end, which is stretched out outside fixation hole and worn, connects pressure
Corresponding connecting hole back spin connected nut on item.
9. prefabricated arches according to claim 1-8, it is characterised in that: the gluing oxidant layer (2) includes from steel
The primer layer and solid glue layer that the surface of reinforced concrete arch is set gradually in outward direction；The primer layer is by being coated in reinforced concrete
Substrate glue on the interior arch surface of soil arch is formed, and the solid glue layer is formed by the dipping glue being coated on primer layer；Primer layer
With a thickness of 0.5~1mm, solid glue layer with a thickness of 1~2mm.
10. forming the dipping glue of solid glue layer in prefabricated arches as claimed in claim 9, it is characterised in that: by 1 mass parts A group
Close object and 2 mass parts composition Bs mixing composition；Every mass parts A composition includes the component materials of following proportion by weight: diphenol
95~105 parts of base propane epoxy resin, 14~16 parts of propylene oxide benzylic ether, γ-glycidyl ether oxygen propyl trimethoxy
1.9~2.1 parts of silane, 6~8 parts of nanometer grade silica, 2.8~3.1 parts of nano activated calcium carbonate, torispherical silica powder
28~32 parts；Every mass parts composition B includes the component materials of following proportion by weight: 95~105 parts of Versamid, 2,
9.5~10.5 parts of 4,6- trisphenol, 6~8 parts of nanometer grade silica, 2.8~3.1 parts of nano activated calcium carbonate, torispherical
28~32 parts of silicon powder.
11. the production method of dipping glue as claimed in claim 10, characterized by the following steps:
1) component materials included by A composition and composition B are obtained by proportion by weight；
2) A composition and composition B are made
The making step of A composition includes:
(1) preparation of base-material and powder
The propane type epoxy resin of di phenolic group and propylene oxide benzylic ether that will acquire are mixed and stirred for uniformly, forming the first mixed base
Material；
γ-the glycidyl ether oxygen propyl trimethoxy silicane that will acquire, nanometer grade silica, nano activated calcium carbonate,
Torispherical silica powder stirs evenly, and forms the first mixed powder；
(2) it is stirred
The first mixed powder is added when stirring the first mixed resin, until stirring evenly, forms A composition bottom material；
(3) ladder heating, natural cooling processing
A composition bottom material is heated to 55 DEG C~65 DEG C under stirring, and is kept for 0.8~1.2 hour；It is again heated to 75 DEG C
~85 DEG C, and kept for 1.8~2.3 hours, 150 DEG C are then again heated to, and kept for 0.8~1.2 hour；Then it is cooled to room naturally
Temperature obtains A composition；
The making step of composition B includes:
(1) preparation of base-material and powder
The Versamid that will acquire and 2,4,6- trisphenols are mixed and stirred for uniformly, forming the second mixed resin；
γ-the glycidyl ether oxygen propyl trimethoxy silicane that will acquire, nanometer grade silica, nano activated calcium carbonate,
Torispherical silica powder stirs evenly, and forms the second mixed powder；
(2) it is stirred
The second mixed powder is added when stirring the second mixed resin, until stirring evenly, forms composition B bottom material；
(3) ladder heating, natural cooling processing
Composition B bottom material is heated to 55 DEG C~65 DEG C under stirring, and is kept for 0.8~1.2 hour；It is again heated to 75 DEG C
~85 DEG C, and kept for 1.8~2.3 hours, 150 DEG C are then again heated to, and kept for 0.8~1.2 hour；Then it is cooled to room naturally
Temperature obtains composition B；
3) A composition and composition B are mixed
It is mixed after obtained A composition and composition B are weighed by the proportion by weight of 2:1, until stir evenly,
Obtain dipping glue.
12. the production method of prefabricated arches as described in claim any one of 1-8, it is characterised in that include the following steps:
1) screwing steel bars concrete arch；
2) flatness reconditioning is carried out to the arch surface of reinforced concrete arch, makes flatness not less than 5mm/m, and to the arch table of reconditioning
Face dedusting；
3) substrate glue is uniformly applied to arch surface, after the substrate glue dry to touch for encircleing surface, then uniformly smears dipping glue；
4) BFRP grid material compatible with arch surface is rolled to vault with roller upwards along the bottom end of arch surface two sides, is made
BFRP grid material is sufficiently pasted on arch surface face, and makes to impregnate glue full penetration into BFRP grid material；
5) after glue dry to touch to be impregnated, the mark of bore position is carried out, and drill one by one by the bore position of mark, if being formed
Dry fixation hole；
6) reinforcing member is straddled by fixation hole and is compressed on BFRP grid material；
7) dipping glue is uniformly smeared in BFRP grid material upper surface, forms protective layer.
13. the production method of prefabricated arches according to claim 7, it is characterised in that: the protective layer thickness and BFRP
The thickness of grid is identical, and cannot be less than 5mm.
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| CN201811044917.6A CN109138162A (en) | 2018-09-07 | 2018-09-07 | A kind of prefabricated arches and production method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609379A (en) * | 2004-11-12 | 2005-04-27 | 杨庆国 | Fibre reinforced plastic and concrete composite arc structure and construction method |
| US20060201091A1 (en) * | 2005-03-08 | 2006-09-14 | Con/Span Bridge Systems Ltd. | Open bottom fiber reinforced precast concrete arch unit |
| CN101033646A (en) * | 2006-10-19 | 2007-09-12 | 上海大学 | Reinforcement method for reinforced concrete beam plate |
| CN105888283A (en) * | 2016-05-10 | 2016-08-24 | 郑州大学 | Method for reinforcing reinforced concrete shear wall structure by using FRP grid strengthened ECC strips |
| CN107513360A (en) * | 2017-08-28 | 2017-12-26 | 如皋市康利化工有限公司 | A kind of preparation method of macromolecular adhesive agent |
| CN208777448U (en) * | 2018-09-07 | 2019-04-23 | 中国人民解放军陆军工程大学 | A kind of prefabricated arches |
-
2018
- 2018-09-07 CN CN201811044917.6A patent/CN109138162A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1609379A (en) * | 2004-11-12 | 2005-04-27 | 杨庆国 | Fibre reinforced plastic and concrete composite arc structure and construction method |
| US20060201091A1 (en) * | 2005-03-08 | 2006-09-14 | Con/Span Bridge Systems Ltd. | Open bottom fiber reinforced precast concrete arch unit |
| CN101033646A (en) * | 2006-10-19 | 2007-09-12 | 上海大学 | Reinforcement method for reinforced concrete beam plate |
| CN105888283A (en) * | 2016-05-10 | 2016-08-24 | 郑州大学 | Method for reinforcing reinforced concrete shear wall structure by using FRP grid strengthened ECC strips |
| CN107513360A (en) * | 2017-08-28 | 2017-12-26 | 如皋市康利化工有限公司 | A kind of preparation method of macromolecular adhesive agent |
| CN208777448U (en) * | 2018-09-07 | 2019-04-23 | 中国人民解放军陆军工程大学 | A kind of prefabricated arches |
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