CN107542219B - Carbon fiber mesh composite board H-shaped cuts section bar and production method - Google Patents
Carbon fiber mesh composite board H-shaped cuts section bar and production method Download PDFInfo
- Publication number
- CN107542219B CN107542219B CN201710043065.8A CN201710043065A CN107542219B CN 107542219 B CN107542219 B CN 107542219B CN 201710043065 A CN201710043065 A CN 201710043065A CN 107542219 B CN107542219 B CN 107542219B
- Authority
- CN
- China
- Prior art keywords
- web
- plate
- connector
- carbon fiber
- flange plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 30
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 11
- 239000004753 textile Substances 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 210000003518 stress fiber Anatomy 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
It cuts section bar the invention discloses a kind of carbon fiber mesh composite board H-shaped and production method.The beam includes flange plate, web, shear connector, L shape connector and composite mortar.Flange plate and web are fixed into H-shaped section skeleton using L shape connector by pre-buried shear connector on flange plate and web, then smear composite mortar until shear connector is completely covered around the shear connector on the skeleton of H-shaped section；Composite mortar is conserved, H-shaped is finally obtained and cuts section bar.The beam can not only give full play to the high-strength and high-elastic module feature of carbon fibre material, and reliable from heavy and light, connection, can be widely applied to all kinds of architectural engineerings, have a clear superiority in terms of durability and fire resistance for opposite H profile steel beam.
Description
Technical field
It cuts section bar the present invention relates to H-shaped a kind of in building structure and production method, is related specifically to a kind of carbon fiber mesh
Composite board H-shaped cuts section bar and production method.
Background technique
The economical rationality of H profile steel section, light-weight, bearing capacity is strong, has good mechanical property, while compared with I-steel beauty
It sees, material can be saved.So being widely used in high-level structure, industrial premises, machine-building, bridge tunnel, railway highway, sea
The fields such as foreign engineering.But due to the limitation of manufacture craft and steel itself, there is also have shortcoming for H profile steel.On the one hand, no matter
It is hot-roll forming or welding fabrication, H profile steel all not can avoid heat treatment in process, and heat treatment will cause fashioned iron finished product
There are the initial imperfections such as residual stress；On the other hand, steel high temperature resistant and fire resistance are poor, the base when temperature reaches 600 DEG C or more
Originally bearing capacity is lost；And be easily corroded in soda acid and wet environment, easy-to-rust the characteristics of so that H profile steel was using
Durability in journey substantially reduces, to influence the normal use of building structure.
In order to overcome the above problem, urgent need develops that a kind of manufacture craft is simple, has good durability and compared with high-mechanic energy
The H-shaped section structural member of power.
Summary of the invention
That technical problem to be solved by the invention is to provide a kind of manufacture crafts is simple, has good durability and higher
The carbon fiber mesh composite board H-shaped of bearing capacity cuts section bar and production method.
In order to solve the above technical problems, the present invention replaces shape steel plate using carbon fiber mesh composite board, and connected by L shape
The independent carbon fiber mesh composite board with shear connector is connected into H by the support of fitting and the bonding of composite mortar
Tee section beam avoids H profile steel in use by being heat-treated caused initial imperfection and steel fire resistance, durability not
Foot etc. is influenced caused by structure, and is solved and be also easy to produce sliding rupture removing between independent plate and can not cooperate with and play a role
The problem of.
The flange plate and web that H-shaped cuts section bar in the present invention are all made of carbon fiber mesh composite board, carbon fiber therein
Durability, fire resistance, corrosion resistance and ductility that H-shaped cuts section bar can be greatly improved.
It cuts section bar in order to which independent composite board is connected integral H-shaped, the present invention uses in advance on composite board
Shear connector is set and is formed coated with the method for composite mortar in interface and is reliably connected, is prevented peeling-off broken between plate
It is bad, so that each composite board is enable to cooperate, shared load.
For composite mortar, the intensity of the interface composite mortar of after-pouring is more compound than the carbon fiber mesh first poured
At least high grade of the intensity of cement-based mortar used in plate, it is ensured that the stabilization of interface adhesive property subtracts
A possibility that few stripping damage occurs.
L shape connector in the present invention is made of band steel, close to center position on two sides of L shape connector
Oval bolt hole is opened up respectively, for L shape connector to be connected by the shank of bolt on nut and plate with plate；L shape connects
Triangle rib is arranged in the right angle of fitting two sides, can increase the rigidity of L shape connector, guarantees that each plate connected is being constructed
Deformation in the process is within the allowable range.
The flange plate and web that H-shaped cuts section bar are fixed using L shape connector, to smear composite mortar, saved
In the component manufacturing process use of template, simplifies work progress, improves construction efficiency.
Preferably, the shear connector and shank of bolt on flange plate are inserted into the 1/ of carbon fiber mesh composite board thickness
At 3；Shear connector and shank of bolt on web run through plate；Extension of all shear connectors on plate with
The plate thickness that it is inserted into is equal；Plate thickness and L shape of extension of all shanks of bolt on plate not less than insertion
1.2 times of connector thickness summation, thereby may be ensured that being connected firmly for interface.
For the production method that carbon fiber mesh composite board H-shaped cuts section bar, the present invention is by the edge of a wing with shear connector
Plate and web, L shape connector form H-shaped section skeleton, first equal along its length at two interior angles of H-shaped section skeleton bottom
Even smearing interfacial agents then smear composite mortar, and the shear connector on bottom flange plate is completely covered；Mortar to be composite is hard
H-shaped section skeleton is overturn 180 ° after change, then uniformly smears interfacial agents along its length at remaining two interior angles and then applies
Composite mortar is smeared, is conserved after remaining shear connector is completely covered, it is ensured that interface composite mortar bonding jail
Gu being conducive to improve the globality of component.
Due on web shear connector and shank of bolt be through arrangement, and the extension of shank of bolt be greater than shearing resistance
The extension of connector, therefore web is laid with a layer thickness in template bottom in advance in production and shank of bolt stretches out web and puts down
The smooth froth bed of the equal length in face is inserted into shear connector and shank of bolt after the completion of screed pours after web top surface,
Froth bed is removed after the completion of the maintenance of web.
Since plate is not fully hardened in insertion for shank of bolt, thread pitch can carry the impurity such as the cement matrix of plate,
Therefore before insertion flange plate and web, one layer is first attached in the length range that flange plate and web are stretched out in shank of bolt both ends
Eva film removes eva film after shank of bolt is inserted into plate.Above-mentioned operation both can guarantee that shank of bolt came into full contact with plate,
It can guarantee that the connection of nut and screw rod is not influenced by impurity again.
In short, carbon fiber mesh composite board H-shaped of the invention cuts section bar and both can solve H profile steel fire resistance durability not
The problem of foot, in turn ensures higher bearing capacity, connects what H-shaped cut section bar with composite mortar in particular by L shape connector
Production method avoids heat treatment bring defect, while saving the use of template, and construction efficiency is high, and manufacture craft is simple.
Detailed description of the invention:
Fig. 1 is the overall schematic of H-shaped section skeleton in the present invention.
Fig. 2 is the diagrammatic cross-section that H-shaped cuts section bar at shear connector in the present invention.
Fig. 3 is the diagrammatic cross-section that H-shaped cuts section bar at L shape connector in the present invention.
Fig. 4 is the positive structure diagram of flange plate in the present invention.
Fig. 5 is the positive structure diagram of median ventral plate of the present invention.
Fig. 6 is the overlooking structure diagram of flange plate and web in the present invention.
Fig. 7 is the structural schematic diagram of L shape connector in the present invention.
1- flange plate in attached drawing, 2- web, 3- shear connector, 4-L shape connector, 5- composite mortar, the oval bolt of 6-
Hole, 7- shank of bolt, 8- nut, 9- triangle rib.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
One, flange plate (1) is made
1. mold is accurately laid flat and arranges that bottom positioning strip, thickness are consistent with board bottom protective layer thickness；
2. preparing steel fiber reinforced cement matrix, and it is cast in template, until at positioning strip upper surface, as plate
Bottom protective layer；
3. arranging each layer Carbon Fibre Textile: bottom Carbon Fibre Textile being placed on bottom positioning strip, in each layer
New positioning strip is arranged between Carbon Fibre Textile, keeps Carbon Fibre Textile symmetrical along plate thickness direction；
4. each layer Carbon Fibre Textile is fixed, is tightened and applies prestressing force；
5. preparing ordinary cement matrix, and it is cast on pre-stress fibre mesh grid, slightly vibrates and guarantee cement
Matrix is fully infiltrated between each layer of pre-stress fibre mesh grid, and ordinary cement matrix is poured to top layer of fibrous mesh grid；
6. the shearing resistance steel fibre that is chopped is perpendicularly inserted into the grid hole of pre-stressed carbon fiber mesh grid；
7. arranging top layer positioning strip, thickness is consistent with plate top protective layer thickness；
8. steel fiber reinforced cement matrix is poured on top layer of fibrous mesh grid, until at top layer positioning strip upper surface,
As plate top protective layer；
9. matrix will have been poured slightly to vibrate and smooth out surface；
10. first being reserved in shank of bolt (7) in outside plate before steel fiber reinforced cement matrix condensation at the top of flange plate (1)
Length range in enclose one layer of eva film, be inserted into shear connector (3) and through pad pasting handle shank of bolt (7)；As
It is preferred that shear connector (3) and shank of bolt (7) are inserted at the 1/3 of flange plate (1) thickness；
11. fixed shear connector (3) and shank of bolt (7) are until the condensation hardening of top cement matrix；
12. after cement matrix compression strength reach standard value 70% after discharge prestressing force, demoulding, and suitably support
Shield；
13. two blocks of carbon fiber mesh composite boards are made by above-mentioned steps, as flange plate (1).
Two, web (2) are made
Only there is change in following steps, remaining production with flange plate:
1. being first laid with the smooth foamed material of one layer with web (2) equal thickness before placing mold, then mold is existed
It is precisely laid flat on froth bed；
10. first stretching out plate at shank of bolt (7) both ends before steel fiber reinforced cement matrix condensation at the top of web (2)
One layer of eva film is enclosed in length range, is inserted into the shank of bolt (7) handled through pad pasting until froth bed bottom surface；Insertion is anti-
It cuts connector (3) and runs through web (2), keep it equal in the extension elongation of web (2) two sides；
13. one block of carbon fiber mesh composite board is made by above-mentioned steps, as web (2).
Three, group is combined into entirety
1. prefabricated L shape connector (4), and oblong bolt is opened up at position of the shape connector two sides L close to midpoint
Hole (6)；
2. one piece of good flange plate (1) of maintenance is first placed in ground grading, then good web (2) will be conserved and be placed in the wing
On the central axes of listrium (1), L shape connector is installed at the position of the pre-buried shank of bolt (7) of flange plate (1) and web (2)
(4) and nut (8) is screwed and is fixed, and forms inverted T-shaped skeleton；
3. another piece of good flange plate (1) of maintenance is placed in the plane that is made of L shape connector (4) and web (2) it
On, it is aligned with bottom flange plate (1)；L shape connector (4) and nut are installed at the position of pre-embedded bolt bar (7) again
(8) it screws and is fixed, form H-shaped section skeleton；
4. preparing composite mortar (5)；
5. smearing interfacial agents at two interior angles of H-shaped section skeleton bottom, the composite mortar prepared is then smeared
(5), H-shaped section skeleton is overturn 180 ° after its condensation hardening, interfacial agents is smeared at remaining two interior angles, are then smeared
Composite mortar (5) simultaneously suitably conserves.
6. mortar (5) to be composite reaches and can obtain carbon fiber mesh composite board H-shaped after age and cut section bar.
Claims (11)
1. a kind of carbon fiber mesh composite board H-shaped cuts section bar, including flange plate (1), web (2), shear connector (3), L shape
Connector (4), composite mortar (5), which is characterized in that pre-buried shear connector (3) on the flange plate (1) and web (2), benefit
Flange plate (1) and web (2) are fixed into H-shaped section skeleton, then the shear connector on H-shaped skeleton with L shape connector (4)
(3) composite mortar (5) are smeared around, shear connector (3) is completely covered by composite mortar (5).
2. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that the flange plate (1)
It is carbon fiber mesh composite board with web (2).
3. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that the flange plate (1)
Upper pre-buried shear connector (3), shear connector (3) is between L shape connector (4) and between plate end and L shape connector (4)
It is evenly arranged along its length, its spacing is not less than 3 times of shear connector (3) diameter, is not more than shear connector (3) diameter
8 times, avoid the position of web (2), and at a distance from flange plate (1) edge be not less than flange plate (1) width 1/10.
4. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that on the web (2)
Pre-buried shear connector (3), shear connector (3) edge between L shape connector (4) and between plate end and L shape connector (4)
Length direction is evenly arranged, and its spacing is not less than 3 times of shear connector (3) diameter, no more than shear connector (3) diameter
8 times, and it is not less than the 1/10 of web (2) width at a distance from web (2) edge.
5. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that the shear connections
Not through plate when part (3) is inserted into flange plate (1), run through plate when being inserted into web (2), all shear connectors (3) are in plate
On extension it is equal with the plate thickness that it is inserted into.
6. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that the composite mortar
(5) an intensity grade higher than the intensity of cement-based mortar used in carbon fiber mesh composite board.
7. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that the L shape connector
(4) it is made of band steel, opens up oval bolt hole respectively close to center position on two sides of L shape connector (4)
(6), and in the right angle of two sides triangle rib (9) are set；L shape connector (4) is not more than along beam length direction equidistant placement, spacing
The 1/2 of beam length, not less than the 1/4 of beam length；And it is arranged symmetrically along web central axes.
8. carbon fiber mesh composite board H-shaped according to claim 1 cuts section bar, which is characterized in that the flange plate (1)
With pre-embedded bolt bar (7) on web (2), the position of shank of bolt (7) corresponds to the position of the oval bolt hole (6) of L shape connector (4)
It sets；Not through plate when shank of bolt (7) insertion flange plate (1), run through plate, all shanks of bolt (7) when being inserted into web (2)
Extension on plate is not less than 1.2 times of the thickness and L shape connector thickness summation that are inserted into plate.
9. a kind of production method that carbon fiber mesh composite board H-shaped cuts section bar, which is characterized in that fixed first flange plate (1)
With the position of web (2), then the oval bolt hole (6) on L shape connector (4) passed through into pre-buried shank of bolt (7) on plate, then
It is inserted in nut (8) on shank of bolt (7) and tightens fixation, each plate is connected into H-shaped section skeleton by all L shape connectors (4)；So
Interfacial agents are uniformly smeared along its length at two interior angles of H-shaped section skeleton bottom afterwards, then smear composite mortar (5), it will
Shear connector (3) on bottom flange plate (1) is completely covered；H-shaped section skeleton is overturn after mortar (5) hardening to be composite
180 °, then interfacial agents are uniformly smeared along its length at remaining two interior angles, composite mortar (5) then are smeared, it will be remaining
Shear connector (3) be completely covered after conserved.
10. the production method that carbon fiber mesh composite board H-shaped according to claim 9 cuts section bar, which is characterized in that institute
It states web (2) and is laid with the length phase of a layer thickness with shank of bolt (7) stretching web (2) plane in template bottom in advance in production
Deng smooth froth bed, after the completion of screed pours after web (2) top surface, be inserted into shear connector (3) and shank of bolt (7),
Froth bed is removed after the completion of the maintenance of web (2).
11. the production method that carbon fiber mesh composite board H-shaped according to claim 9 cuts section bar, which is characterized in that institute
Shank of bolt (7) is stated before insertion flange plate (1) and web (2), first stretches out flange plate (1) and web at shank of bolt (7) both ends
(2) one layer of eva film is attached in length range, removes eva film after shank of bolt (7) are inserted into plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043065.8A CN107542219B (en) | 2017-01-19 | 2017-01-19 | Carbon fiber mesh composite board H-shaped cuts section bar and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043065.8A CN107542219B (en) | 2017-01-19 | 2017-01-19 | Carbon fiber mesh composite board H-shaped cuts section bar and production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107542219A CN107542219A (en) | 2018-01-05 |
| CN107542219B true CN107542219B (en) | 2019-05-17 |
Family
ID=60966144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710043065.8A Expired - Fee Related CN107542219B (en) | 2017-01-19 | 2017-01-19 | Carbon fiber mesh composite board H-shaped cuts section bar and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107542219B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145132A (en) * | 2019-01-23 | 2019-08-20 | 卡本科技股份有限公司 | A kind of carbon fiber mesh is used for the reinforcement means of masonry structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119693A (en) * | 1993-07-09 | 1996-04-03 | 古川宽文 | Jointing material for joint of steel structure and jointing method |
| CN2628623Y (en) * | 2003-05-29 | 2004-07-28 | 浙江杭萧钢构股份有限公司 | H Shape steel concrete combined web girder |
| CN2661809Y (en) * | 2003-11-11 | 2004-12-08 | 李勇 | nternal force adjustable prestressed steel-concrete combination beam |
| CN202954488U (en) * | 2012-12-14 | 2013-05-29 | 金天德 | Combined concrete-filled steel tubular column |
| KR101381874B1 (en) * | 2013-12-13 | 2014-04-04 | 부림산업개발(주) | Side reinforced psc girder and manufacturing method thereof |
| CN203756672U (en) * | 2014-01-26 | 2014-08-06 | 洛阳双瑞橡塑科技有限公司 | Platform plate connector |
| CN105649199A (en) * | 2016-01-14 | 2016-06-08 | 辽宁工业大学 | Concrete filled steel tubular column-steel beam combined joint structure and construction method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8650819B2 (en) * | 2009-10-29 | 2014-02-18 | Lawrence R. Yegge | Process for producing high-capacity concrete beams or girders |
-
2017
- 2017-01-19 CN CN201710043065.8A patent/CN107542219B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119693A (en) * | 1993-07-09 | 1996-04-03 | 古川宽文 | Jointing material for joint of steel structure and jointing method |
| CN2628623Y (en) * | 2003-05-29 | 2004-07-28 | 浙江杭萧钢构股份有限公司 | H Shape steel concrete combined web girder |
| CN2661809Y (en) * | 2003-11-11 | 2004-12-08 | 李勇 | nternal force adjustable prestressed steel-concrete combination beam |
| CN202954488U (en) * | 2012-12-14 | 2013-05-29 | 金天德 | Combined concrete-filled steel tubular column |
| KR101381874B1 (en) * | 2013-12-13 | 2014-04-04 | 부림산업개발(주) | Side reinforced psc girder and manufacturing method thereof |
| CN203756672U (en) * | 2014-01-26 | 2014-08-06 | 洛阳双瑞橡塑科技有限公司 | Platform plate connector |
| CN105649199A (en) * | 2016-01-14 | 2016-06-08 | 辽宁工业大学 | Concrete filled steel tubular column-steel beam combined joint structure and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107542219A (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102900200A (en) | Intelligent FRP (Fiber Reinforce Plastic)-concrete composite structure and manufacturing method thereof | |
| CN102011442A (en) | Light steel-concrete combination structure shear wall and manufacturing method thereof | |
| CN110700103B (en) | Construction method of continuous composite beam | |
| CN109797651B (en) | Flat combined box girder with corrugated steel plate inner mold | |
| CN112900717A (en) | Support-free medium-length prefabricated rib truss rib laminated plate structure and preparation method thereof | |
| WO2006004357A1 (en) | Concrete-structure constructing system manufactured by pre-fabricating and method therof | |
| CN110241734A (en) | A kind of prestressing bend beam applies stress device and its construction method | |
| CN113738007A (en) | Truss floor plate | |
| CN106703288B (en) | Method for manufacturing carbon fiber grid composite plate concrete continuous beam | |
| CN107542219B (en) | Carbon fiber mesh composite board H-shaped cuts section bar and production method | |
| CN110004816A (en) | Wavelike steel webplate Prestressed U HPC combined box beam and its construction method | |
| CN213596822U (en) | Reinforced concrete box culvert reinforcing apparatus | |
| CN202936949U (en) | Intelligent FRP-concrete composite structure | |
| CN102922602A (en) | Process for preparing prefabricated intelligent fiber reinforce plastic (FRP)-concrete composite structure | |
| CN110886185A (en) | Box girder with anchoring device and box girder bridge | |
| CN217268233U (en) | Non-dismantling bottom die floor plate for different-surface construction | |
| CN112176850B (en) | Steel-UHPC combined structure shear connector and manufacturing and mounting method thereof | |
| CN214833902U (en) | Support-free medium-length prefabricated rib truss rib superposed plate structure | |
| CN212802262U (en) | Combined beam structure for building and building | |
| CN210194868U (en) | Prefabricated primary and secondary roof beam connected node | |
| CN110318557B (en) | Prestressed concrete hollow slab reinforcing device and method | |
| CN209244093U (en) | Ultra-high performance concrete is without regular reinforcement Prestressed U type beam | |
| CN209179173U (en) | Tooling without mould concrete | |
| CN106760190A (en) | Concrete simply supported beam and preparation method based on carbon fiber mesh composite board | |
| CN207004000U (en) | A kind of aluminum alloy pattern plate for building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 |