CN113898204A - Reinforcing structure of frame beam and reinforcing method thereof - Google Patents
Reinforcing structure of frame beam and reinforcing method thereof Download PDFInfo
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- CN113898204A CN113898204A CN202111246683.5A CN202111246683A CN113898204A CN 113898204 A CN113898204 A CN 113898204A CN 202111246683 A CN202111246683 A CN 202111246683A CN 113898204 A CN113898204 A CN 113898204A
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- frame beam
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- rib
- stirrups
- carbon fiber
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 23
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 39
- 239000004917 carbon fiber Substances 0.000 claims abstract description 39
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 239000003292 glue Substances 0.000 claims description 16
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 238000005034 decoration Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 13
- 210000003205 muscle Anatomy 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a reinforced structure of a frame beam and a reinforcing method thereof, wherein the reinforced structure has almost no influence on indoor clear height and actual use space after construction, basically has no influence on secondary decoration of an owner, has the capability of effectively resisting the influence of environmental factors such as temperature, humidity and the like and better fireproof performance after reinforcement is finished, and high-strength carbon fiber bars used for reinforcement are hidden. The invention solves the problem that the indoor clear height and the actual use space of a reinforced building are greatly influenced by a traditional reinforcing method of a frame beam by a section enlarging method.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a reinforced structure of a frame beam and a reinforcing method thereof.
Background
The traditional frame beam is reinforced mainly by adopting a section enlarging method. The traditional reinforcing method has relatively complex construction procedures, and can greatly influence the indoor clear height and the actual use space of a reinforced building.
Disclosure of Invention
In order to overcome the defects in the prior art, a reinforcing structure of a frame beam and a reinforcing method thereof are provided so as to solve the problem that the indoor clear height and the actual use space of a reinforced building are greatly influenced by the conventional reinforcing method of the frame beam by the section increasing method.
In order to achieve the above object, there is provided a reinforcing structure of a frame beam, including:
the rib removing wall comprises a rib exposing wall and a rib protecting wall, the bottom of the frame beam is removed and chiseled to form the rib protecting wall, the side of the frame beam is removed and chiseled to expose the side of a plurality of stirrups of the frame beam to form the rib exposing wall, the rib protecting wall is provided with an accommodating through groove arranged at an angle with the stirrups, and the bottoms of the stirrups are exposed in the accommodating through groove;
the carbon fiber bar is accommodated in the accommodating through groove, and two ends of the carbon fiber bar are respectively implanted into the supporting pieces at two ends of the frame beam;
the bonding structural adhesive is filled between the carbon fiber bars and the bottoms of the stirrups;
the two ends of the plurality of bag bottom ribs are turned upwards along the wall surface direction of the exposed rib wall and are connected to the side parts of the plurality of stirrups in a one-to-one correspondence manner; and
and the repairing layer is poured on the exposed rib wall and the rib protecting wall and covers a plurality of the pocket bottom ribs.
Furthermore, the supporting piece is a column, and two ends of the carbon fiber bar are implanted into a column head of the column.
Furthermore, a bar planting hole is formed in the column head, the end part of the carbon fiber bar is inserted into the bar planting hole, and bar planting glue is poured into the bar planting hole.
Further, the volume of the bar planting glue accounts for 70% of the volume of the bar planting holes.
Furthermore, the accommodating through groove and the stirrups are respectively arranged along the length direction of the frame beam.
Further, the repair layer is flush with the side face of the frame beam.
The invention provides a method for reinforcing a reinforced structure of a frame beam, which comprises the following steps:
picking and chiseling the bottom of a frame beam to be reinforced to form a rib protecting wall, picking and chiseling the two opposite side parts of the frame beam to expose the side parts of a plurality of stirrups of the frame beam to form the exposed rib wall, and connecting the two exposed rib walls to the rib protecting wall to form a picked and chiseled wall;
an accommodating through groove arranged at an angle to the stirrups is formed in the reinforcement protection wall, so that the bottoms of the stirrups are exposed in the accommodating through groove;
accommodating the carbon fiber bars in the accommodating through grooves, and respectively implanting two ends of the carbon fiber bars into the supporting pieces at two ends of the frame beam;
pouring bonding structural adhesive into the accommodating through groove, so that the bonding structural adhesive is filled between the carbon fiber bars and the bottoms of the stirrups;
supporting a plurality of bottom pocket ribs on the rib protection wall, and turning over two ends of the bottom pocket ribs along the wall surface direction of the exposed rib wall and connecting the two ends of the bottom pocket ribs to the side parts of the stirrups in a one-to-one correspondence manner;
and pouring mortar on the exposed rib wall and the rib protecting wall to form a repairing layer, wherein the mortar is coated on the plurality of pocket bottom ribs.
The reinforced structure of the frame beam has the advantages that the reinforced structure of the frame beam hardly influences indoor clear height and actual use space after construction, basically has no influence on secondary decoration of an owner, has the capability of effectively resisting the influence of environmental factors such as temperature and humidity and better fireproof performance after reinforcement is finished, and high-strength carbon fiber ribs for reinforcement are hidden and have higher acceptance, so that the reinforced structure of the frame beam is more suitable for the building updating and industry promotion process brought by city development under the background of the current era. Compared with the traditional beam bottom steel-clad or frame beam section-enlarging method for reinforcement, the reinforcement structure of the frame beam adopts the carbon fiber reinforcement for reinforcement, has relatively simple and convenient working procedures, can effectively save the construction period and reduce the cost.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 to 3 are schematic views illustrating steps of a method for reinforcing a reinforcing structure of a frame beam according to an embodiment of the present invention.
Fig. 4 is a cross-sectional view of a frame beam of an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 4, the present invention provides a reinforcing structure of a frame beam, including: the repairing structure comprises a chiseling wall A, carbon fiber ribs 1, bonding structure glue, a plurality of pocket bottom ribs 2 and a repairing layer 3.
Specifically, the chiseling wall A comprises two exposed rib walls a and a rib protecting wall b. The two exposed rib walls a are respectively connected to two opposite sides of the rib protecting wall b.
The bottom of the frame beam 4 is chiseled to form the rib protecting wall b, and the side of the frame beam 4 is chiseled to expose the side of a plurality of stirrups 41 of the frame beam 4 to form the exposed rib wall a.
The rib protecting wall b is provided with an accommodating through groove b 0. The two ends of the accommodating through groove are respectively connected to the supporting pieces 5 at the two ends of the frame beam. The accommodating through groove b0 is arranged at an angle with the stirrup 41. The bottoms of the stirrups 41 are exposed in the accommodating through grooves b 0.
In this embodiment, the number of the accommodating through grooves is multiple, and the multiple accommodating through grooves are arranged at intervals along the width direction of the beam.
The carbon fiber bar 1 is accommodated in the accommodating through groove b 0. Both ends of the carbon fiber bar 1 are respectively embedded in the supporting pieces 5 at both ends of the frame beam 4.
The bonding structure glue is filled between the carbon fiber reinforcement 1 and the bottoms of the stirrups 41. The bonding structure glue is used for bonding a plurality of stirrups and carbon fiber bars together so as to be connected into a whole.
The plurality of bottom ribs 2 are supported on the rib protecting wall b. The muscle sets up along the width direction of frame roof beam at the bottom of the pocket, and the muscle sets up along the length direction interval of frame roof beam at the bottom of many pockets. Two ends of each bottom rib 2 are turned upwards along the wall surface direction of the exposed rib wall a and are connected with the side parts of the stirrups 41 in a one-to-one correspondence manner.
The repairing layer 3 is poured on the exposed rib wall a and the rib protecting wall b and is coated on the plurality of pocket bottom ribs 2. The repair layer is a consolidated body formed by consolidating high-strength mortar. Specifically, the high-strength mortar is poured on the exposed rib wall and the rib protecting wall, and is coated on a plurality of pocket bottom ribs to be solidified to form a repairing layer.
The reinforced structure of the frame beam disclosed by the invention has almost no influence on indoor clear height and actual use space after construction, basically has no influence on secondary decoration of an owner, has the capability of effectively resisting the influence of environmental factors such as temperature and humidity and better fireproof performance after reinforcement is finished, and the high-strength carbon fiber ribs for reinforcement are more concealed and have higher acceptance, so that the reinforced structure is more suitable for the building updating and industry promotion process brought by city development under the current era background.
In this embodiment, the actual tensile effect of the carbon fiber reinforcement of high strength can reach 7 ~ 10 times of the reinforcing bar of equal diameter, and density only has 1/4 of steel density, and the transportation degree of difficulty reduces by a wide margin with the construction operation degree of difficulty than using steel. And set up the holding and lead to the groove on protecting the muscle wall, the roof beam side is picked the chisel protective layer and is exposed the stirrup and form and expose the muscle wall, the inslot that the holding led to the groove is smeared bonding structure and is glued (glue the steel glue) and will expose the stirrup bottom and bond in carbon fiber muscle, in the support piece is implanted to carbon fiber muscle both sides, the stirrup is welded (single face welding) with the stirrup of original roof beam at the bottom of the U-shaped pocket, the stirrup interval is with original roof beam stirrup, the roof beam surface chiseling is handled, at last with high pressure water moist, wash the dust, protect muscle wall and expose muscle wall and spray the I level high strength polymer mortar and form the restoration layer.
Compared with the traditional beam bottom steel-clad or frame beam section-enlarging method for reinforcement, the reinforcement structure of the frame beam adopts the carbon fiber reinforcement for reinforcement, has relatively simple and convenient working procedures, can effectively save the construction period and reduce the cost.
In a preferred embodiment, the support 5 is a column, and the two ends of the carbon fiber tendon 1 are embedded in the column head of the column. The column head is provided with a tendon-planting hole. The end part of the carbon fiber bar 1 is inserted into the bar planting hole. The bar planting holes are filled with bar planting glue. The volume of the bar planting glue accounts for 70% of the volume of the bar planting holes.
In the present embodiment, the accommodating through grooves b0 and the plurality of stirrups 41 are provided along the length direction of the frame beam 4, respectively.
After the high-strength mortar is poured, the outer side face of the repairing layer 3 is flush with the side face of the frame beam 4.
The invention provides a method for reinforcing a reinforced structure of a frame beam, which comprises the following steps:
s1: and removing and chiseling the bottom of the frame beam 4 to be reinforced to form a rib protecting wall b, and removing and chiseling the two opposite side parts of the frame beam 4 to the side parts of the stirrups 41 of the frame beam 4 to expose to form the exposed rib wall a, so that the two exposed rib walls a are connected with the rib protecting wall b to form a removing and chiseling wall A.
S2: an accommodating through groove b0 is formed in the tendon protection wall b and forms an angle with the stirrup 41, so that the bottoms of the stirrups 41 are exposed in the accommodating through groove b 0.
Specifically, after a rib protecting wall is formed by chiseling a beam bottom elastic line of the frame beam, the frame beam is continuously cut and grooved to form an accommodating through groove. In the embodiment, the plurality of accommodating through grooves are arranged at equal intervals. The distance between the containing through groove at the outermost side and the edge of the frame beam is larger than 60mm, the net distance of the containing through groove is larger than 6d (d is the diameter of a carbon fiber rib), then the grooved contour line is popped up, the width of the containing through groove is required to be 1.5d, and the groove depth is 1.5 d.
A beam side concrete chiseling protective layer of the frame beam adopts a small electric pick chiseling which completely exposes the stirrups to clean loose concrete and floating dust with water.
Surface treatment of chiseling walls: and cleaning a plastering layer on the surface of the chiseling wall, grouting or sealing the crack, and removing impurities. Roughening by using a chiseling machine or a small electric hammer, and chiseling hemp points on the wall of the chisel to form points with the depth of about 3mm and the number of 600 points/m2800 dots/m2Uniform distribution of (2); or chiseling into a quincunx distribution with the point depth of 4 mm-5 mm and the distance of about 30 mm.
S3: the carbon fiber bar 1 is accommodated in the accommodating through groove b0, and both ends of the carbon fiber bar 1 are respectively implanted into the support members 5 at both ends of the frame beam 4.
Specifically, a bar planting hole is drilled at the beam end of the frame beam, the depth of the beam end in the column is not less than 30d, and the carbon fiber bar calculates the blanking length according to the implantation depth of the beam net length +2 times. The diameter of the punched hole is equal to the diameter of the carbon bar by +4mm in the bar planting process, bar planting glue with the total volume of 70% is injected into the hole, and the carbon fiber bar is implanted into the hole of the bar planting hole.
S4: and pouring adhesive structural glue into the accommodating through groove b0, so that the adhesive structural glue is filled between the carbon fiber reinforcement 1 and the bottoms of the stirrups 41.
Before the glue is smeared in the accommodating through groove, the surface of the structure in the groove is cleaned again, and the carbon rib is pressed into the groove within 30 minutes after the structure glue is smeared.
The carbon fiber bar is temporarily fixed, the position of the carbon fiber bar is temporarily fixed by a fixture before the structural adhesive is not cured, and the fixture is detached after the structural adhesive is cured.
S5: support many pockets bottom muscle 2 in protect muscle wall b, and will many the both ends of muscle 2 are followed at the bottom of the pocket the wall direction of exposed muscle wall a turns over and connects in many one-to-one the lateral part of stirrup 41.
Specifically, the two ends of the pocket bottom rib are welded and connected to the two sides of the stirrup of the frame beam. The blanking manufacturing size of the pocket bottom rib is required to be set out according to the size of an original beam, the size is ensured to be in accordance with the size of the original beam, the stirrup and the stirrup of the original structure are in lap joint, and the welding length of the stirrup is 10d for single-side welding.
S6: and pouring mortar on the exposed rib wall a and the rib protecting wall b to form a repairing layer 3, wherein the mortar is coated on the plurality of pocket bottom ribs 2.
When a repairing layer is poured and before mortar spraying construction, the surface of the chiseling wall is fully sprayed with water to be wet, horizontal dotting work is done, marking is done, a layer of interface adhesive is sprayed on an interface, and mortar spraying is started.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (7)
1. A reinforcing structure of a frame beam, comprising:
the rib removing wall comprises a rib exposing wall and a rib protecting wall, the bottom of the frame beam is removed and chiseled to form the rib protecting wall, the side of the frame beam is removed and chiseled to expose the side of a plurality of stirrups of the frame beam to form the rib exposing wall, the rib protecting wall is provided with an accommodating through groove arranged at an angle with the stirrups, and the bottoms of the stirrups are exposed in the accommodating through groove;
the carbon fiber bar is accommodated in the accommodating through groove, and two ends of the carbon fiber bar are respectively implanted into the supporting pieces at two ends of the frame beam;
the bonding structural adhesive is filled between the carbon fiber bars and the bottoms of the stirrups;
the two ends of the plurality of bag bottom ribs are turned upwards along the wall surface direction of the exposed rib wall and are connected to the side parts of the plurality of stirrups in a one-to-one correspondence manner; and
and the repairing layer is poured on the exposed rib wall and the rib protecting wall and covers a plurality of the pocket bottom ribs.
2. The reinforcement structure of a frame beam according to claim 1, wherein the support member is a column, and both ends of the carbon fiber bar are embedded in a column head of the column.
3. The reinforced structure of a frame beam according to claim 2, wherein the column cap has a bar planting hole, the end of the carbon fiber bar is inserted into the bar planting hole, and the bar planting hole is filled with a bar planting glue.
4. The reinforcing structure of a frame beam according to claim 3, wherein the volume of the bar-planting glue is 70% of the volume of the bar-planting holes.
5. The reinforcing structure of a frame beam according to claim 1, wherein the receiving through-grooves and the plurality of stirrups are respectively provided along a length direction of the frame beam.
6. The reinforcement structure of a frame beam according to claim 1, wherein the repair layer is flush with a side of the frame beam.
7. A method of reinforcing a reinforcing structure of a frame beam according to any one of claims 1 to 6, comprising the steps of:
picking and chiseling the bottom of a frame beam to be reinforced to form a rib protecting wall, picking and chiseling the two opposite side parts of the frame beam to expose the side parts of a plurality of stirrups of the frame beam to form the exposed rib wall, and connecting the two exposed rib walls to the rib protecting wall to form a picked and chiseled wall;
an accommodating through groove arranged at an angle to the stirrups is formed in the reinforcement protection wall, so that the bottoms of the stirrups are exposed in the accommodating through groove;
accommodating the carbon fiber bars in the accommodating through grooves, and respectively implanting two ends of the carbon fiber bars into the supporting pieces at two ends of the frame beam;
pouring bonding structural adhesive into the accommodating through groove, so that the bonding structural adhesive is filled between the carbon fiber bars and the bottoms of the stirrups;
supporting a plurality of bottom pocket ribs on the rib protection wall, and turning over two ends of the bottom pocket ribs along the wall surface direction of the exposed rib wall and connecting the two ends of the bottom pocket ribs to the side parts of the stirrups in a one-to-one correspondence manner;
and pouring mortar on the exposed rib wall and the rib protecting wall to form a repairing layer, wherein the mortar is coated on the plurality of pocket bottom ribs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246683.5A CN113898204A (en) | 2021-10-26 | 2021-10-26 | Reinforcing structure of frame beam and reinforcing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111246683.5A CN113898204A (en) | 2021-10-26 | 2021-10-26 | Reinforcing structure of frame beam and reinforcing method thereof |
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| CN113898204A true CN113898204A (en) | 2022-01-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144336A (en) * | 2007-08-28 | 2008-03-19 | 上海市建筑科学研究院(集团)有限公司 | Method for repairing and reinforcing wood beam by carbon fibre bar |
| CN202788023U (en) * | 2012-08-29 | 2013-03-13 | 台州职业技术学院 | Embedded concrete reinforcing structure |
| CN205444968U (en) * | 2015-12-29 | 2016-08-10 | 中国核电工程有限公司 | Bar planting anchor structure |
| JP6083001B1 (en) * | 2015-11-20 | 2017-02-22 | 一般社団法人 レトロフィットジャパン協会 | Reinforcement structure of building |
| CN206128673U (en) * | 2016-09-08 | 2017-04-26 | 长安大学 | High ductility fibre concrete strengthening roof beam |
| CN207920139U (en) * | 2017-12-22 | 2018-09-28 | 宇杰集团股份有限公司 | A kind of Axial-compression Column of Reinforced Concrete with ruggedized construction |
| CN211974448U (en) * | 2020-03-16 | 2020-11-20 | 广东中森建设工程有限公司 | Sprayed concrete combines CFRP muscle to increase roof beam cross-section structure |
-
2021
- 2021-10-26 CN CN202111246683.5A patent/CN113898204A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144336A (en) * | 2007-08-28 | 2008-03-19 | 上海市建筑科学研究院(集团)有限公司 | Method for repairing and reinforcing wood beam by carbon fibre bar |
| CN202788023U (en) * | 2012-08-29 | 2013-03-13 | 台州职业技术学院 | Embedded concrete reinforcing structure |
| JP6083001B1 (en) * | 2015-11-20 | 2017-02-22 | 一般社団法人 レトロフィットジャパン協会 | Reinforcement structure of building |
| CN205444968U (en) * | 2015-12-29 | 2016-08-10 | 中国核电工程有限公司 | Bar planting anchor structure |
| CN206128673U (en) * | 2016-09-08 | 2017-04-26 | 长安大学 | High ductility fibre concrete strengthening roof beam |
| CN207920139U (en) * | 2017-12-22 | 2018-09-28 | 宇杰集团股份有限公司 | A kind of Axial-compression Column of Reinforced Concrete with ruggedized construction |
| CN211974448U (en) * | 2020-03-16 | 2020-11-20 | 广东中森建设工程有限公司 | Sprayed concrete combines CFRP muscle to increase roof beam cross-section structure |
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