CN206859515U - Confusion type FRP steel composite reinforcing marine sand concrete beams - Google Patents
Confusion type FRP steel composite reinforcing marine sand concrete beams Download PDFInfo
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- CN206859515U CN206859515U CN201720498726.1U CN201720498726U CN206859515U CN 206859515 U CN206859515 U CN 206859515U CN 201720498726 U CN201720498726 U CN 201720498726U CN 206859515 U CN206859515 U CN 206859515U
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- composite reinforcing
- frp
- sand concrete
- reinforcing
- marine sand
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Abstract
The utility model discloses a kind of confusion type FRP steel composite reinforcing marine sand concrete beam, including marine sand concrete and the upper composite reinforcing, lower composite reinforcing and the stirrup that are fixedly arranged in marine sand concrete, stirrup is set to multiple, and uniformly fixes bind on the outer surface of upper composite reinforcing and lower composite reinforcing along the length direction of upper composite reinforcing and lower composite reinforcing；Upper composite reinforcing is set to top and bottom that are multiple, and being respectively arranged on marine sand concrete with lower composite reinforcing；Upper composite reinforcing and lower composite reinforcing include reinforcing bar and the FRP fiber cloths being coated on the outer surface of reinforcing bar, the FRP fiber cloths of each upper composite reinforcing are identical material or different materials, the FRP fiber cloths of multiple lower composite reinforcings use at least two materials, and FRP fiber cloths bond with marine sand concrete；The FRP fiber cloths of lower composite reinforcing include at least two in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth.For the utility model without carrying out desalt processing to sea sand, intensity and load-carrying properties are good.
Description
Technical field
The utility model belongs to building engineering structure field, refers in particular to a kind of confusion type FRP- steel composite reinforcing sea sand coagulation
Tu Liang.
Background technology
With the fast development of China's economy, the dosage of concrete is for many years always held at a high position, according to statistics, China
Concrete annual production exceedes the 50% of world's concrete annual production for years, and fine aggregate of the sand as concrete, it is led
It is river sand to want source, but because the supply of river sand is limited by resource, environment etc., can not fully meet engineering construction
Demand.For a long time, largely exploitation river sand has resulted in serious ecological environment problem in the riverbed on land and massif.Use for reference
The experience of the developed countries such as Japan, the sea sand suitable with river sand performance is applied in civil engineering can greatly alleviate it is for building
The anxiety of sand.
According to statistics, the external building as having more than 50% in developed country's owned buildings such as Britain, the U.S., Japan needs
Want maintenance and reinforcement, China needs the Old building quantity of maintenance and reinforcement also vast as the open sea, it is repaired as developing power in engineering
The height of expense, can not be ignored, and many is to cause room because reinforcement corrosion is damaged in these buildings that need to reinforce maintenance
Load bearing beam power declines so that house has the danger collapsed.
FRP tendons (Fiber Reinforced Plastics Bars fibrous composites) have corrosion-resistant, tensile strength
It is high, density is small, light weight, the advantages that solenoid isolation is good, damping property is good, but there is also material fragility and price height etc. to lack
Point.FRP tendons (the removing high-strength CFRP) modulus of elasticity that there is now is relatively low compared with reinforcing bar, the linear section of its stress-strain relation, when
When it is individually used in beams of concrete structure, FRP tendons concrete component easily produces brittle break and in a state of use
The problem of producing excessive fracture width and amount of deflection, it greatly affected carrying and the performance of FRP tendons concrete component, pole
The earth limits promotion and application of the FRP tendons concrete component in field of civil engineering.
As shown in figure 5, using the marine sand concrete beam of single FRP- steel composite reinforcing in tension masterpiece used time, its stress-answer
Varied curve shows obvious dual slope before fibrous fracture, and single FRP- steel composite reinforcing has the secondary of stabilization after reinforcement yielding
Rigidity, its load-strain curve can be divided into three sections.First paragraph oa is the cooperation deformation stage of FRP and reinforcing bar；Second segment ab
After reinforcement yielding, FRP provides the stage of stress increment, and this segmental stiffness diminishes compared with the first section；3rd section of bc breaks for FRP cloth
After bad, the stage of reinforcing bar bearing load alone.It is defined on when the design strength of single FRP- steel composite reinforcing within second interval
(not closing on ultimate tensile strength point B), after load bearing beam power exceedes design strength, the change of its appearance features is not notable, lacks bright
Aobvious phenomenon of warning, its ultimate tensile strength point B is closed on if the design strength of single FRP- steel composite reinforcing is defined into, is tied
Structure safety stock is few, and after external load exceedes its ultimate tensile intensity, FRP is directly broken, the bearing capacity significantly rapid drawdown of beam,
Beam body failure mode is near brittle break.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of without carrying out desalt processing, intensity to sea sand
The confusion type FRP- steel composite reinforcing marine sand concrete beam good with load-carrying properties.
The purpose of this utility model can be reached using following technical scheme：
A kind of confusion type FRP- steel composite reinforcing marine sand concrete beam, including marine sand concrete and be fixedly arranged in marine sand concrete
Upper composite reinforcing, lower composite reinforcing and stirrup, the stirrup is set to multiple, and equal along the length direction of upper composite reinforcing and lower composite reinforcing
Even fixed bind is on the outer surface of the upper composite reinforcing and lower composite reinforcing；Upper composite reinforcing is set to multiple with lower composite reinforcing, and
It is respectively arranged on the top and bottom of the marine sand concrete；The upper composite reinforcing and lower composite reinforcing include reinforcing bar and are coated on reinforcing bar
Outer surface on FRP fiber cloths, the FRP fiber cloths of each upper composite reinforcing are identical material or different materials, compound under multiple
The FRP fiber cloths of muscle use at least two materials, and the FRP fiber cloths bond with marine sand concrete；The FRP of the lower composite reinforcing
Fiber cloth is at least two in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth.
As a kind of preferable scheme, the FRP fiber cloths of the upper composite reinforcing are carbon cloth, glass fabric, the Black Warrior
One kind in rock fiber cloth and aryl fiber cloth.
As a kind of preferable scheme, the FRP fiber cloths of the upper composite reinforcing are carbon cloth, glass fabric, the Black Warrior
At least two in rock fiber cloth and aryl fiber cloth.
As a kind of preferable scheme, the FRP fiber cloths described in multilayer, multilayer institute are coated with the outer surface of the reinforcing bar
The FRP fiber cloths stated can use identical material or different materials.
Further, the FRP fiber cloths described in multilayer use different materials, are compared by the fracture elongation of material,
The high FRP fiber cloths of fracture elongation carry out distribution setting successively from inside to outside.
As a kind of preferable scheme, the FRP fiber cloths are coated on reinforcing bar outer surface solid to paste by adhesive
It is scheduled on together.
As a kind of preferable scheme, the FRP fiber cloths outer surface forms rib by plastic band.
As a kind of preferable scheme, it is pasted together between FRP fiber cloths described in adjacent two layers by adhesive.
As a kind of preferable scheme, the adhesive is epoxy resin or polyester resin.
As a kind of preferable scheme, the marine sand concrete is by seawater or fresh water, cement, coarse aggregate and without fresh water
The sea sand composition of reason, the seawater or fresh water, cement, coarse aggregate and the sea sand without fresh water treatment mix simultaneously uniform stirring and formed
Marine sand concrete.
Implement the utility model, have the advantages that：
1st, upper composite reinforcing of the present utility model and lower composite reinforcing use different materials cladding reinforcing steel bar, form the FRP- of confusion type
Steel composite reinforcing distributed architecture and be applied to as longitudinal stress muscle in beam in marine sand concrete instead of regular reinforcement.Pass through different materials
The FRP- steel composite reinforcings that the cladding of the FRP fiber cloths of material is formed have different FRP ductility, modulus of elasticity and tensile strength, make
The beams of concrete completed after must pouring has more preferable ductility, modulus of elasticity and tensile strength, substantially increases beams of concrete
Comprehensive mechanical property.
2nd, the utility model is using mixing FRP- steel composite reinforcings, first with FRP material tensile strength is high, corrosion resistant spy
Point, it can also reach while load bearing beam power is significantly improved and protect reinforcing bar from the purpose of the corrosion such as chlorion；Other reinforcing bar
The advantages that modulus of elasticity is high, and ductility is good compensate for the deficiency of FRP fragile materials again.Than pure FRP tendons good rigidity, when it be used to mix
When coagulating in native girder construction, compared to pure FRP tendons concrete beam components, fracture width and amount of deflection obtain larger subtract under its use state
It is slow.
3rd, the utility model has the characteristics of acid and alkali-resistance salt corrosion due to FRP fiber cloths, ftractures and makes in marine sand concrete
When must go up composite reinforcing and the exposure of lower composite reinforcing in atmosphere, the reinforcing bar in upper composite reinforcing and lower composite reinforcing also will not be by external environment
Corroded.Compared to reinforced beam, this structure has more preferable safety in utilization and longer service life.
4th, original sea sand can be used directly in the utility model, without to original sea sand carry out desalt processing, can directly by with
Carry out beam and pour in marine sand concrete is made, saved freshwater resources, omit and the treatment process of desalted sea sand, greatly
Ground improves the utilization rate of sea sand, and can effectively solve that coastal area or surrounding islands and reefs area river sand construction material lack asks
Topic, it also avoid the ecological environment problem that exhaustive exploitation river sand is brought, has certain economic benefit and environment-friendly function.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of embodiment 1 of the utility model confusion type FRP- steel composite reinforcing marine sand concrete beams；
Fig. 2 is the structural representation of the embodiment 2 of the utility model confusion type FRP- steel composite reinforcing marine sand concrete beams；
Fig. 3 is the upper composite reinforcing of the utility model confusion type FRP- steel composite reinforcing marine sand concrete beams and the knot of lower composite reinforcing
Structure schematic diagram；
Fig. 4 is the structural representation of the embodiment 3 of the utility model confusion type FRP- steel composite reinforcing marine sand concrete beams；
Fig. 5 is the load-strain curve figure of the existing marine sand concrete beam using single FRP- steel composite reinforcing；
Fig. 6 is the load-strain curve figure of the utility model confusion type FRP- steel composite reinforcing marine sand concrete beams.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment 1
Reference picture 1 and Fig. 3, the present embodiment are related to marine sand concrete beam, and the section of the beams of concrete can be rectangle, or T
Shape or box-shaped, it includes marine sand concrete 1 and the upper composite reinforcing 2, lower composite reinforcing 3 and the stirrup 4 that are fixedly arranged in marine sand concrete 1,
The stirrup 4 is set to multiple, and uniformly fixes bind in described compound along the length direction of upper composite reinforcing 2 and lower composite reinforcing 3
On the outer surface of muscle 2 and lower composite reinforcing 3；Upper composite reinforcing 2 is set to multiple with lower composite reinforcing 3, and is respectively arranged on the sea sand and mixes
The top and bottom of solidifying soil 1；The upper composite reinforcing 2 and lower composite reinforcing 3 include reinforcing bar 24 and are coated on the outer surface of reinforcing bar 24
FRP fiber cloths 23, the FRP fiber cloths 23 of each upper composite reinforcing 2 are identical material or different materials, multiple lower composite reinforcings 3
FRP fiber cloths 23 use at least two materials, and the FRP fiber cloths 23 bond with marine sand concrete 1；The lower composite reinforcing 3
FRP fiber cloths 23 are at least two in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth.The hoop
Muscle 4 can include the reinforcing bar 24 and the FRP fiber cloths 23 being coated on the outer surface of reinforcing bar 24, in FRP fiber cloths
Under antisepsis, reinforcing bar 24 can be prevented by the chloride ion corrosion in marine sand concrete 1.
The upper composite reinforcing 2 of this structure and lower composite reinforcing 3 use different materials cladding reinforcing steel bar 24, form the FRP- steel of confusion type
Composite reinforcing distributed architecture and replace regular reinforcement 24 to be applied to as longitudinal stress muscle in beam in marine sand concrete 1.Pass through difference
The FRP- steel composite reinforcings that the cladding of the FRP fiber cloths 23 of material is formed have different FRP ductility, modulus of elasticity and tension strong
Degree, compared with clean steel muscle, the beams of concrete completed after pouring has more preferable ductility, modulus of elasticity and tensile strength, carries significantly
The high comprehensive mechanical property of beams of concrete, the usage amount of reinforcing bar is reduced, mitigate the deadweight of beam.Shown in Fig. 6 of the present utility model
Compared to Fig. 5 of prior art, from load-strain figure of Fig. 6 confusion type FRP- steel composite reinforcings, when its first limit
When tensile strength (B points) is exceeded, the low FRP fiber cloths of fracture elongation are first broken in confusion type FRP- steel composite reinforcings, and this
When the high FRP fiber cloths of fracture elongation continue and reinforcing bar plays a part of carrying simultaneously so that the bearing capacity of beam is not in
The significantly situation of rapid drawdown, it may appear that obvious rigidity three times, (C when reaching the high FRP fiber cloths of fracture elongation and being broken
Point), carrying effect is now continued by single take over of reinforcing bar, until reinforcing bar is broken, beams of concrete occurs two in the process
The mutation of secondary bearing capacity, improving the overall plastic deformation ability of beam so that beams of concrete has longer support and crumbled the time,
Prevent house from the fatal sex chromosome mosaicism of direct avalanche occur.And people can by being visually intuitive to see the crack of beams of concrete,
And play a part of warning, to escape and more times are striven in rescue.
Because FRP fiber cloths 23 have the characteristics of acid and alkali-resistance salt corrosion, ftractureed in marine sand concrete 1 and cause upper composite reinforcing
2 and lower composite reinforcing 3 when exposing in atmosphere, reinforcing bar 24 in upper composite reinforcing 2 and lower composite reinforcing 3 also will not by external environment corruption
Erosion.Compared to the beams of concrete of reinforcing bar 24, this structure has more preferable safety in utilization and longer service life.
Original sea sand can be used directly in the structure, without carrying out desalt processing to original sea sand, can be used directly to be made
Marine sand concrete 1 and carry out beam and pour, saved freshwater resources, omitted and the treatment process of desalted sea sand, greatly carried
The high utilization rate of sea sand, can effectively solve the problems, such as that coastal area or surrounding islands and reefs area river sand construction material lack,
Avoid the ecological environment problem that exhaustive exploitation river sand is brought.
The FRP fiber cloths 23 of the upper composite reinforcing 2 are that carbon cloth, glass fabric, basalt fiber cloth and aramid fiber are fine
Tie up one kind in cloth.Certainly, other FRP fibrous materials with corrosion resistance are also applied for manufacturing FRP fiber cloths 23.More preferably
, the FRP fiber cloths 23 of upper composite reinforcing 2 be in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth extremely
It is few two kinds；The upper composite reinforcing 2 of the structure forms the distributed architecture of confusion type so that the coagulation that upper composite reinforcing 2 is completed after pouring
There is more preferable ductility, modulus of elasticity and compression strength in native beam, improve the comprehensive mechanical property of beams of concrete.
The FRP fiber cloths 23 described in multilayer are coated with the outer surface of the reinforcing bar 24, the FRP fiber cloths 23 described in multilayer
Identical material or different materials can be used.It is pasted together between FRP fiber cloths 23 described in adjacent two layers by adhesive.It is more
FRP fiber cloths 23 described in layer include at least two in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth
Kind.Specifically, when using different materials for the FRP fiber cloths described in multilayer, it is compared, breaks by the fracture elongation of material
Split the high FRP fiber cloths of elongation percentage and carry out distribution setting successively from inside to outside.For example, when reinforcing bar is coated with glass fiber reinforcement material
Expect (GFRP), and carbon fibre reinforced composite (CFRP), because GFRP fracture elongation is higher than CFRP, so GFRP and steel
Muscle is contacted and is directly coated on the outer surface of reinforcing bar, and CFRP is coated on GFRP outer surfaces.Such as Fig. 6, when its first pole
When limit tensile strength (B points) is exceeded, the low CFRP fiber cloths of fracture elongation are first broken in confusion type FRP- steel composite reinforcings, and
Now the high GFRP fiber cloths of fracture elongation continue and reinforcing bar plays a part of carrying simultaneously so that the bearing capacity of beam will not go out
The now significantly situation of rapid drawdown so that beams of concrete has longer support and crumbled the time, prevents house from the cause of direct avalanche occur
Order sex chromosome mosaicism.
The FRP fiber cloths 23 are coated on the outer surface of reinforcing bar 24 by adhesive to be pasted and fixed on together.The structure
Reinforcing bar 24 be closely connected with FRP fiber cloths 23 by adhesive, reinforcing bar 24 is thoroughly completely cut off by FRP fiber cloths 23 so that sea sand
Chlorion in concrete 1 can not corrode to reinforcing bar 24, drastically increase the security and service life of beam.
The outer surface of FRP fiber cloths 23 forms rib by plastic band.It can increase FRP fiber cloths 23 by rib to mix with sea sand
Adhesive property between solidifying soil 1, improves beam bend-carrying capacity, prevents reinforcing bar 24 by corrosion.
The adhesive is epoxy resin or polyester resin.Certainly, other adhesives with corrosion-resistant resin are also fitted
For the utility model.Reinforcing bar 24 can further be protected not by marine sand concrete 1 using the adhesive with corrosion resistance
Chlorion is corroded.
The marine sand concrete 1 is made up of seawater or fresh water, cement, coarse aggregate and sea sand without fresh water treatment, described
Seawater or fresh water, cement, coarse aggregate and the sea sand mixing without fresh water treatment and uniform stirring formation marine sand concrete 1.It is described
Sea sand can be used in the process for preparation of marine sand concrete 1 completely, seawater can be used completely, greatly saved river sand use and
The dosage of fresh water, it can be especially useful for the coastal area or surrounding islands and reefs area for lacking river sand construction material and freshwater resources, tool
There is the characteristics of use range is wide and applicability is high.
Embodiment 2
The present embodiment is on the basis of embodiment 1, as the improvement of the setting structure to upper composite reinforcing 2, such as Fig. 2 institutes
Showing, the section of the marine sand concrete 1 is T-type structure, and the upper composite reinforcing 2 is set to multiple, and uniformly located at marine sand concrete 1
Top；Upper composite reinforcing 2 fixes bind together by stirrup 4, and solid also by stirrup 4 between upper composite reinforcing 2 and lower composite reinforcing 3
Surely link together.The upper composite reinforcing 2 of the structure forms overall muscle structure separately through the bind of stirrup 4, drastically increases
Upper composite reinforcing 2 bears the ability of pressure.
Embodiment 3
The present embodiment is on the basis of embodiment 1, as the improvement of the setting structure to lower composite reinforcing 3, such as Fig. 4 institutes
Show, the lower composite reinforcing 3 is set to two rows, and the lower composite reinforcing 3 is fixedly connected on the inner ring of stirrup 4.The structure uses more
The lower composite reinforcing 3 of row is used as supporting role, drastically increases the ability for bearing pulling force of beams of concrete.
Above disclosed is only a kind of the utility model preferred embodiment, can not limit this practicality with this certainly
New interest field, therefore the equivalent variations made according to the utility model claims, still belong to what the utility model was covered
Scope.
Claims (10)
- A kind of 1. confusion type FRP- steel composite reinforcing marine sand concrete beam, it is characterised in that：Including marine sand concrete and it is fixedly arranged on sea Upper composite reinforcing, lower composite reinforcing and stirrup, the stirrup in sand concrete are set to multiple, and along upper composite reinforcing and lower composite reinforcing Length direction uniformly fixes bind on the outer surface of the upper composite reinforcing and lower composite reinforcing；Upper composite reinforcing is all provided with lower composite reinforcing To be multiple, and it is respectively arranged on the top and bottom of the marine sand concrete；The upper composite reinforcing and lower composite reinforcing include reinforcing bar and The FRP fiber cloths being coated on the outer surface of reinforcing bar, the FRP fiber cloths of each upper composite reinforcing are identical material or different materials, The FRP fiber cloths of multiple lower composite reinforcings use at least two materials, and the FRP fiber cloths bond with marine sand concrete；Under described The FRP fiber cloths of composite reinforcing are at least two in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth.
- A kind of 2. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 1, it is characterised in that：On described The FRP fiber cloths of composite reinforcing are one kind in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth.
- A kind of 3. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 1, it is characterised in that：On described The FRP fiber cloths of composite reinforcing are at least two in carbon cloth, glass fabric, basalt fiber cloth and aryl fiber cloth.
- A kind of 4. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 1, it is characterised in that：The steel The FRP fiber cloths described in multilayer are coated with the outer surface of muscle, the FRP fiber cloths described in multilayer can use identical material or not Same material.
- A kind of 5. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 4, it is characterised in that：Multilayer institute The FRP fiber cloths stated use different materials, are compared by the fracture elongation of material, the high FRP fiber cloths of fracture elongation Carry out distribution setting successively from inside to outside.
- A kind of 6. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 1, it is characterised in that：It is described FRP fiber cloths are coated on reinforcing bar outer surface by adhesive to be pasted and fixed on together.
- A kind of 7. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 1, it is characterised in that：It is described FRP fiber cloths outer surface forms rib by plastic band.
- A kind of 8. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 4, it is characterised in that：Adjacent two It is pasted together between the layer FRP fiber cloths by adhesive.
- A kind of 9. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 6 or 8, it is characterised in that：Institute It is epoxy resin or polyester resin to state adhesive.
- A kind of 10. confusion type FRP- steel composite reinforcing marine sand concrete beam according to claim 1, it is characterised in that：It is described Marine sand concrete is made up of seawater or fresh water, cement, coarse aggregate and sea sand without fresh water treatment, the seawater or fresh water, water Mud, coarse aggregate and the sea sand mixing without fresh water treatment and uniform stirring formation marine sand concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720498726.1U CN206859515U (en) | 2017-05-05 | 2017-05-05 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720498726.1U CN206859515U (en) | 2017-05-05 | 2017-05-05 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
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| CN206859515U true CN206859515U (en) | 2018-01-09 |
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| CN201720498726.1U Expired - Fee Related CN206859515U (en) | 2017-05-05 | 2017-05-05 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217786A (en) * | 2017-05-05 | 2017-09-29 | 广东工业大学 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
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2017
- 2017-05-05 CN CN201720498726.1U patent/CN206859515U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217786A (en) * | 2017-05-05 | 2017-09-29 | 广东工业大学 | Confusion type FRP steel composite reinforcing marine sand concrete beams |
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Granted publication date: 20180109 |