CN108797888A - A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams and its construction method - Google Patents
A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams and its construction method Download PDFInfo
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- CN108797888A CN108797888A CN201811003022.8A CN201811003022A CN108797888A CN 108797888 A CN108797888 A CN 108797888A CN 201811003022 A CN201811003022 A CN 201811003022A CN 108797888 A CN108797888 A CN 108797888A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
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Abstract
A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams and its construction method, beams of concrete includes load-bearing main body and is cast in the concrete of load-bearing main body, load-bearing main body section is U-shaped, horizonal base plate is equipped in load-bearing main body, concreting is in the U-shaped space in load-bearing main body above horizonal base plate, vertical baffle is equipped between horizonal base plate and the load-bearing main body bottom plate, space between horizonal base plate and the load-bearing main body bottom plate is divided into load-bearing cavity by vertical baffle, vertical baffle and horizonal base plate are along the elongated setting of beams of concrete, in the U-type groove of load-bearing main body, uniform intervals are equipped with shear key on horizonal base plate.The present invention adds suitable steel fibre in high-strength concrete, tension, shearing resistance, flexural strength and the toughness of concrete can be increased substantially, the rigidity of structure and ductile performance are significantly increased, the setting of load-bearing cavity increases the ratio of width to height of beam, improves the bearing capacity of beam.
Description
Technical field
The invention belongs to building engineering field more particularly to a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concretes
Beam and its construction method.
Background technology
The advantages that fibre reinforced composites (FRP) are with its high-strength light, good corrosion resistance has extensively in field of civil engineering
Wealthy development prospect.FRP is bonded by basis material by continuous fiber, common basis material be epoxy resin,
The high-molecular organic materials such as vinylite.In recent years, the advantages that FRP is high-strength light, corrosion-resistant with its, start building with build
It builds in engineering structure and is applied, and by the extensive concern of engineering circles.
Normal reinforced concrete beam is widely used in building field at present to have the disadvantage that, durability is poor, the power of material
Performance is poor, and dead load is larger, and work progress is complicated, and the construction period is longer, larger to labour demand, due to there is kind
In certain fields, application is subject to certain restrictions kind defect.
Start the high tensile reinforcement being applied in Practical Project enhancing high-strength concrete beam components, takes full advantage of high-strength steel
The high strength characteristics of muscle and high-strength concrete can increase substantially the bearing capacity of beam, reduce sectional dimension and material consumption.But
It is that with the raising of concrete strength, brittleness gradually increases, and component ductility continuously decreases, totally unfavorable to earthquake-resistant structure etc., and
Steel bars corrosion problem still remains.High-strength concrete is to realize there is higher pressure resistance by adding suitable steel fibre
Degree, elasticity modulus and preferable endurance quality, but brittleness is larger, and the ductility of high-strength concrete component is poor.
FRP has lightweight, high-strength, antifatigue, corrosion-resistant, domestic and foreign scholars and technical staff by FRP material part or complete
Portion replaces reinforcing bar for enhancing beams of concrete, to solve the problems, such as the corrosion of reinforcing bar.Compared with normal concrete structure, saves and finish
The protective layer of structure alleviates the dead weight of structure, increases the use space of structure.Having installed for template is eliminated, is work progress
In provide many facilities.
Invention content
The object of the present invention is to provide a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams and its construction parties
Method, will solve that prior art construction dead weight is larger, and work progress is complicated, and the construction period is longer, the skill larger to labour demand
Art problem；And solve the problems, such as prior art beams of concrete to weigh that effect is poor, reinforcing bar easy-to-rust in reinforced beam.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams, it is characterised in that：The beams of concrete includes load-bearing master
Body and the concrete for being cast in load-bearing main body, load-bearing main body section are U-shaped, and horizonal base plate is equipped in the load-bearing main body,
The concreting is in the U-shaped space in load-bearing main body above horizonal base plate, the horizonal base plate and the load-bearing main body
Vertical baffle is equipped between bottom plate, the space between horizonal base plate and the load-bearing main body bottom plate is divided by the vertical baffle
Load-bearing cavity, the vertical baffle and horizonal base plate are along the elongated setting of beams of concrete, the U-type groove of the load-bearing main body, water
Uniform intervals are equipped with shear key on flat underside.
It is further preferred that the load-bearing main body, horizonal base plate, vertical baffle and shear key by FRP proximate matters make and
At the FRP proximate matters are any one of CFRP, GFRP, BFRP and AFRP material.
Further, the vertical baffle is two pieces of stripe boards, and vertical baffle height is 50 ~ 80mm, vertical baffle thickness
For 5 ~ 10mm, load-bearing cavity width is 60 ~ 120mm.
Further, the horizonal base plate thickness is 200 ~ 400mm, and horizontal base width is adapted with load-bearing main body groove width.
Further, the wall thickness of the load-bearing main body is 5 ~ 10mm, and load-bearing main body bottom plate thickness is 5 ~ 10mm, and load-bearing main body is wide
For 200 ~ 400mm, a height of 500 ~ 800mm of load-bearing main body.
Further, the thickness of the shear key is 5 ~ 10mm, and the adjacent shearing resistance key spacing is 200 ~ 300mm, described
Shear key height is the 1/4 ~ 1/2 of load-bearing main body height, and the shear key bottom is bonded fixation with horizonal base plate.
Further, the load-bearing main body and horizonal base plate are an integral molding structure, and the load-bearing main body section is to wait to cut
Face or variable cross-section.
Further, the concrete is the steel fiber reinforced concrete of strength grade C50 or more.
It is further preferred that the shear key is the rectangular slab made of FRP proximate matters, the shear key both ends fix set on
In the vertical bar shaped fixing slot of both sides load-bearing main body inner wall, the length of the vertical bar shaped fixing slot is more than 100mm, described vertical
Distance of the bar shaped fixing slot away from horizonal base plate is 0 ~ 100mm.
A kind of construction method of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams, which is characterized in that including following
Step：
Step 1: prefabricated load-bearing main body and horizonal base plate：According to the prefabricated load-bearing main body of beams of concrete size and horizonal base plate；
Step 2: fixing vertical baffle：Vertical baffle is pushed to the space between load-bearing main body and horizonal base plate, vertical baffle
Density is adapted with load-bearing main body width；
Step 3: fixing shear key：Vertically bar shaped fixing slot pushes shear key, the density of shear key and load-bearing to load-bearing main body
The length of main body is adapted；
Step 4: casting concrete：Steel fiber reinforced concrete is poured in space into load-bearing main body, on horizonal base plate, was poured
Ensure that steel fibre is evenly distributed in journey；
Step 5: test piece maintenance：Conventional maintenance is carried out to concrete and load-bearing main body, so far, non-dismantling formwork formula FRP proximate matters are high-strength
Steel fiber reinforced concrete beams construction is completed.
Compared with prior art the invention has the characteristics that and advantageous effect：
The present invention adds suitable steel fibre in high-strength concrete, and it is strong can to increase substantially the tension of concrete, shearing resistance, anti-folding
Degree and toughness, significantly increase the rigidity of structure and ductile performance.
FRP material and the material of two kinds of superior performances of high strength steel fiber reinforced concrete are organically combined, FRP material is given full play to
And the feature that strength of high strength concrete is high, sectional dimension of members can be greatly reduced.It is available to increase building for effectively save material
Space；The dead weight for reducing structure increases the anti-seismic performance of structure；Be conducive to the realization of large span, high-level structure；
The corrosion resistance of FRP material is conducive to improve the durability of concrete structure under adverse circumstances, has wide range of applications,
FRP material material is good, light-weight, makes simple and convenient in carrying, removes installing for template from, saves the duration, reduces construction cost,
And it is suitble to Prefabrication, shear key is arranged in beams of concrete, strengthens cooperateing with for FRP materials and high strength steel fiber reinforced concrete
Effect, increases the stress performance of beam.
The setting of load-bearing cavity increases the ratio of width to height of beam, improves the bearing capacity of beam, and FRP material is arranged in tension
Area has given full play to the good tensile property of FRP material, reduces dead load, improves the anti-seismic performance of structure.
The present invention has the characteristics that safety, is applicable in, and has good promotion and practical value, and can be produced after extensive popularization and application
Raw good economic benefit.
Description of the drawings
Fig. 1 is a kind of non-dismantling formwork formula FRP proximate matters high strength steel fiber reinforced concrete beam transverse sectional view of the present invention；
Fig. 2 is a kind of dimensional structure diagram of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams of the present invention；
Fig. 3 is the position relationship structural diagram of vertical bar shaped fixing slot and load-bearing main body that invention is related to.
Reference numeral：1- load-bearing main bodies；2- horizonal base plates；3- vertical baffles；4- shear keies；5- concrete；6- load-bearing is empty
Chamber；The vertical bar shaped fixing slots of 7-；A- vertical baffle height；B- vertical baffle thickness；C- horizonal base plate thickness；D- load-bearing cavitys are wide
Degree；E- wall thickness；F- load-bearing main bodies bottom plate is thick；G- load-bearing main bodies are wide；H- load-bearing main bodies are high.
Specific implementation mode
Technological means, character of innovation, reached purpose and effect to make the present invention realize are easy to understand, below to this
Invention further illustrates.
The embodiment recorded herein is the specific specific implementation mode of the present invention, for illustrating design of the invention,
It is explanatory and illustrative, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also based on the application claims and specification disclosure of that using aobvious and
The other technical solutions being clear to, these technical solutions include any obvious using making for the embodiment to recording herein
The technical solution of substitutions and modifications.
A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams, as shown in Figure 1, beams of concrete includes load-bearing master
Body 1 and the concrete 5 for being cast in load-bearing main body 1,1 section of load-bearing main body are U-shaped, and horizonal base plate 2 is equipped in load-bearing main body 1, is mixed
Solidifying soil 5 is cast in load-bearing main body 1 in the U-shaped space of 2 top of horizonal base plate, is set between 1 bottom plate of horizonal base plate 2 and load-bearing main body
There are vertical baffle 3, vertical baffle 3 that the space between 1 bottom plate of horizonal base plate 2 and the load-bearing main body is divided into load-bearing cavity 6,
Vertical baffle 3 and horizonal base plate 2 are along the elongated setting of beams of concrete, as shown in Fig. 2, the U-type groove of load-bearing main body 1 is interior, horizontal base
Uniform intervals are equipped with shear key 4 on plate 2.
As the preferred embodiment of the invention, load-bearing main body 1, horizonal base plate 2, vertical baffle 3 and shear key 4 by
FRP proximate matters are made, and FRP proximate matters are by CFRP（Carbon fiber）, GFRP (glass fibre), BFRP (basalt fibre) and AFRP
Any one of (aramid fiber).
As the preferred embodiment of the invention, vertical baffle 3 is two pieces of stripe boards, vertical baffle height a is 50 ~
80mm, vertical baffle thickness b are 5 ~ 10mm, and load-bearing cavity width d is 60 ~ 120mm.
As the preferred embodiment of the invention, horizonal base plate thickness c is 5 ~ 10mm, horizontal base width and load-bearing main body 1
Groove width is adapted.
As the preferred embodiment of the invention, the wall thickness e of load-bearing main body 1 is 5 ~ 10mm, load-bearing main body bottom plate thickness f is 5 ~
10mm, the wide g of load-bearing main body are 200 ~ 400mm, and the high h of load-bearing main body is 500 ~ 800mm.
As the preferred embodiment of the invention, the thickness of shear key 4 is 5 ~ 10mm, 4 spacing of adjacent shear key is 200 ~
300mm, 4 height of shear key are the 1/4 ~ 1/2 of 1 height of load-bearing main body, and 4 bottom of shear key is bonded fixation with horizonal base plate 2.
As the preferred embodiment of the invention, load-bearing main body 1 and horizonal base plate 2 are an integral molding structure, load-bearing main body 1
Section is cross-section or variable cross-section.
As the preferred embodiment of the invention, concrete 5 is the steel fiber reinforced concrete of strength grade C50 or more.
As the preferred embodiment of the invention, shear key 4 is the rectangular slab made of FRP proximate matters, 4 both ends card of shear key
Gu in the vertical bar shaped fixing slot 7 set on 1 inner wall of both sides load-bearing main body, the length of vertical bar shaped fixing slot 7 is more than 100mm,
Vertical 7 distance away from horizonal base plate 2 of bar shaped fixing slot is 0 ~ 100mm, namely as shown in figure 3, shear key 4 with horizonal base plate 2 not
Contact, when casting concrete, concrete can be circulated by the space between shear key 4 and horizonal base plate 2.
A kind of construction method of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams, it is characterised in that：
Step 1: prefabricated load-bearing main body 1 and horizonal base plate 2：According to the prefabricated load-bearing main body 1 of beams of concrete size and horizonal base plate 2；
Step 2: fixing vertical baffle 3：To between load-bearing main body 1 and horizonal base plate 2 space push vertical baffle 3, vertically every
The density of plate 3 is adapted with 1 width of load-bearing main body；
Step 3: fixing shear key 4：Vertically bar shaped fixing slot 7 pushes shear key 4, the density of shear key 4 to load-bearing main body 1
It is adapted with the length of load-bearing main body 1；
Step 4: casting concrete 5：Steel fiber reinforced concrete is poured in space into load-bearing main body 1, on horizonal base plate 2, is poured
Ensure that steel fibre is evenly distributed in the process；
Step 5: test piece maintenance：Conventional maintenance is carried out to concrete 5 and load-bearing main body 1, so far, non-dismantling formwork formula FRP proximate matters are high
Strong steel fiber reinforced concrete beams construction is completed.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams, it is characterised in that：The beams of concrete includes load-bearing
Main body（1）Be cast in load-bearing main body（1）Concrete（5）, the load-bearing main body（1）Section is U-shaped, the load-bearing main body
（1）It is interior to be equipped with horizonal base plate（2）, the concrete（5）It is cast in load-bearing main body（1）Interior horizonal base plate（2）The U-shaped space of top
It is interior, the horizonal base plate（2）With the load-bearing main body（1）Vertical baffle is equipped between bottom plate（3）, the vertical baffle（3）It will
Horizonal base plate（2）With the load-bearing main body（1）Space between bottom plate is divided into load-bearing cavity（6）, the vertical baffle（3）With
Horizonal base plate（2）Along the elongated setting of beams of concrete, the load-bearing main body（1）U-type groove in, horizonal base plate（2）Between going up uniformly
Every equipped with shear key（4）.
2. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State load-bearing main body（1）, horizonal base plate（2）, vertical baffle（3）And shear key（4）It is made by FRP proximate matters, the FRP types
Material is any one of CFRP, GFRP, BFRP and AFRP material.
3. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State vertical baffle（3）For two pieces of stripe boards, vertical baffle height（a）For 50~80mm, vertical baffle thickness（b）For 5~10mm,
Load-bearing cavity width（d）For 60~120mm.
4. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State horizonal base plate thickness（c）For 5~10mm, horizontal base width and load-bearing main body（1）Groove width is adapted.
5. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State load-bearing main body（1）Wall thickness（e）For 5~10mm, load-bearing main body bottom plate thickness（f）For 5~10mm, load-bearing main body is wide（g）It is 200
~400mm, load-bearing main body are high（h）For 500~800mm.
6. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State shear key（4）Thickness be 5~10mm, the adjacent shear key（4）Spacing is 200~300mm, the shear key（4）It is high
Degree is load-bearing main body（1）The 1/4~1/2 of height, the shear key（4）Bottom and horizonal base plate（2）Fitting is fixed.
7. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State load-bearing main body（1）And horizonal base plate（2）It is an integral molding structure, the load-bearing main body（1）Section is cross-section or variable cross-section.
8. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State concrete（5）For the steel fiber reinforced concrete of strength grade C50 or more.
9. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as described in claim 1, it is characterised in that：Institute
State shear key（4）For the rectangular slab made of FRP proximate matters, the shear key（4）Both ends are fixed set on both sides load-bearing main body（1）
The vertical bar shaped fixing slot of inner wall（7）It is interior, the vertical bar shaped fixing slot（7）Length be more than 100mm, the vertical bar shaped card
Gu slot（7）Away from horizonal base plate（2）Distance be 0~100mm.
10. a kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams as claimed in any one of claims 1 to 9 wherein
Construction method, which is characterized in that include the following steps,
Step 1: prefabricated load-bearing main body（1）And horizonal base plate（2）：According to the prefabricated load-bearing main body of beams of concrete size（1）And level
Bottom plate（2）；
Step 2: fixing vertical baffle（3）：To load-bearing main body（1）And horizonal base plate（2）Between space push vertical baffle
（3）, vertical baffle（3）Density and load-bearing main body（1）Width is adapted；
Step 3: fixing shear key（4）：Vertically bar shaped fixing slot（7）To load-bearing main body（1）Push shear key（4）, shear key
（4）Density and load-bearing main body（1）Length be adapted；
Step 4: casting concrete（5）：To load-bearing main body（1）Interior, horizonal base plate（2）On space in pour steel fibre coagulation
Soil ensures that steel fibre is evenly distributed in casting process；
Step 5: test piece maintenance：To concrete（5）And load-bearing main body（1）Carry out conventional maintenance, so far, non-dismantling formwork formula FRP types
The construction of material high strength steel fiber reinforced concrete beam is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003022.8A CN108797888A (en) | 2018-08-30 | 2018-08-30 | A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003022.8A CN108797888A (en) | 2018-08-30 | 2018-08-30 | A kind of non-dismantling formwork formula FRP proximate matter high strength steel fiber reinforced concrete beams and its construction method |
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| CN108797888A true CN108797888A (en) | 2018-11-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056127A (en) * | 2019-04-16 | 2019-07-26 | 武汉大学 | Assembled case groove profile FRP profile light fibre marine sand concrete beam |
| CN110056128A (en) * | 2019-04-16 | 2019-07-26 | 武汉大学 | Lightweight assembled is put more energy into case groove profile FRP profile marine sand concrete beam |
| CN112277154A (en) * | 2020-10-28 | 2021-01-29 | 广东中建新型建筑构件有限公司 | Production method of FRP rib precast beam |
| CN112962784A (en) * | 2021-02-08 | 2021-06-15 | 华北水利水电大学 | FRP (fiber reinforced plastic) section hybrid fiber concrete composite construction method and structure thereof |
-
2018
- 2018-08-30 CN CN201811003022.8A patent/CN108797888A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056127A (en) * | 2019-04-16 | 2019-07-26 | 武汉大学 | Assembled case groove profile FRP profile light fibre marine sand concrete beam |
| CN110056128A (en) * | 2019-04-16 | 2019-07-26 | 武汉大学 | Lightweight assembled is put more energy into case groove profile FRP profile marine sand concrete beam |
| CN112277154A (en) * | 2020-10-28 | 2021-01-29 | 广东中建新型建筑构件有限公司 | Production method of FRP rib precast beam |
| CN112962784A (en) * | 2021-02-08 | 2021-06-15 | 华北水利水电大学 | FRP (fiber reinforced plastic) section hybrid fiber concrete composite construction method and structure thereof |
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