CN113668894A - Structure of prestressed FRP cloth reinforced truss and construction method thereof - Google Patents
Structure of prestressed FRP cloth reinforced truss and construction method thereof Download PDFInfo
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- CN113668894A CN113668894A CN202111044510.5A CN202111044510A CN113668894A CN 113668894 A CN113668894 A CN 113668894A CN 202111044510 A CN202111044510 A CN 202111044510A CN 113668894 A CN113668894 A CN 113668894A
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- 239000004744 fabric Substances 0.000 title claims abstract description 187
- 238000010276 construction Methods 0.000 title claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 abstract description 13
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 description 8
- 230000000149 penetrating effect Effects 0.000 description 6
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- 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
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- Civil Engineering (AREA)
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- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention provides a structure of a prestressed FRP cloth reinforced truss, wherein the truss is formed with a first chord member and a second chord member which are oppositely arranged and a plurality of web members which are obliquely connected between the first chord member and the second chord member, and the structure comprises: the FRP cloth corresponds to the web member and is oppositely arranged on the two sides of the web member, one end of the FRP cloth is fixed on the side part of the first chord member, the other end of the FRP cloth is fixed on the side part of the second chord member, and a space is formed between the side part of the web member and the corresponding part of the FRP cloth; the fixing plate is fixed on the surface of the FRP cloth, which is far away from the web member; connect between two fixed plates and length adjustable regulating part, through the length of adjusting the regulating part for two fixed plates are close to each other, with to the direction ejection FRP cloth that is close to the web member, thereby stretch-draw FRP cloth, with the prestressing force of applying to FRP cloth. The invention solves the technical problem that the traditional welding reinforcement mode is easy to have welding defects, improves the tensile bearing capacity and fatigue performance of truss connection, and increases the construction safety of the truss.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a prestressed FRP cloth reinforced truss structure and a construction method thereof.
Background
Welded intersecting joints are an important form of joint for pipe trusses. However, due to problems of welding defects, stress concentration and the like, the truss welding joint is easy to generate fatigue failure under the action of fatigue load; the traditional reinforcing method for the node of the welding truss comprises the steps of welding a steel sleeve, welding a stiffening plate, arranging an external stiffening ring and the like, and the traditional reinforcing method not only increases more dead weight of the structure, but also mostly adopts a welding mode for reinforcing, so that new welding defects are inevitably introduced, new fatigue weak points are formed, and the original structure is adversely affected.
Disclosure of Invention
In view of the above circumstances, the present invention provides a structure of a prestressed FRP cloth reinforced truss and a construction method thereof, in which FRP cloth is disposed on a side portion of a truss, and prestress is applied to the FRP cloth to reinforce the truss, thereby solving a technical problem that a conventional welding reinforcement method is prone to welding defects, improving strength utilization rate of a high-strength FRP material, improving tensile bearing capacity and fatigue performance of connection of the truss, and increasing construction safety of the truss.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a structure of truss is consolidated to prestressing force FRP cloth, this truss is formed with relative first chord member and the second chord member that sets up, is connected with a plurality of web members between this first chord member and this second chord member aslope, and the protruding lateral part that stretches out this web member of the lateral part of this first chord member and this second chord member, and this structure includes:
the FRP cloth corresponds to the web member and is oppositely arranged on the two sides of the web member, one end of the FRP cloth is fixed on the side part of the first chord member, the other end of the FRP cloth is fixed on the side part of the second chord member, and a space is formed between the side part of the web member and the corresponding part of the FRP cloth; and
the fixing plate is fixed on the surface of the FRP cloth, which is far away from the web member;
connect between two relative fixed plates and adjustable length's regulating part, through the length of adjusting the regulating part for two fixed plates are close to each other to the direction ejection FRP cloth that is close to the web member, thereby stretch-draw FRP cloth, with the FRP cloth to truss both sides applys prestressing force.
The structure of the prestressed FRP cloth reinforced truss is further improved in that the adjusting piece comprises a screw rod penetrating through the two opposite fixing plates and a nut screwed on the screw rod and positioned at the side part of the two fixing plates, which are far away from each other;
through twisting the nut soon for the nut pushes away the fixed plate that corresponds, thereby two fixed plates are close to each other, with the direction ejection FRP cloth that is close to the web member, thereby stretch-draw FRP cloth, and exert prestressing force to the FRP cloth of truss both sides.
The structure of the prestressed FRP cloth reinforced truss is further improved in that the prestressed FRP cloth reinforced truss further comprises a batten wound on the end part of the FRP cloth and the corresponding first chord or second chord so as to fixedly connect the FRP cloth and the first chord or the FRP cloth and the second chord.
The structure of the prestressed FRP cloth reinforced truss is further improved in that the FRP cloth is adhered to the surfaces of the first chord member and the second chord member through structural glue.
The structure of the prestressed FRP cloth reinforced truss is further improved in that the prestressed FRP cloth reinforced truss further comprises a filling layer formed between the FRP cloth and the web members in a filling mode.
The structure of the prestressed FRP cloth reinforced truss is further improved in that one end of the FRP cloth is wound and fixed on the first chord member, and the other end of the FRP cloth is attached to the side part of the first chord member, extends along the extending direction of the web members and is wound and fixed on the second chord member.
A construction method of a prestressed FRP cloth reinforced truss structure comprises the following steps:
providing a plurality of FRP cloth, arranging the FRP cloth on two sides of the web plate, respectively fixing two ends of the FRP cloth on the first chord member and the second chord member, and keeping a distance between the side part of the web member and the corresponding part of the FRP cloth;
providing a plurality of fixing plates, and fixing the fixing plates on the surface of the FRP cloth away from the web member;
the adjusting piece is connected between the two opposite fixing plates, the length of the adjusting piece is adjusted, the two fixing plates are close to each other, the FRP cloth is pushed in the direction close to the web members, and the FRP cloth is stretched to exert prestress on the FRP cloth on two sides of the truss.
Furthermore, the adjusting part comprises a screw rod penetrating through the two fixing plates and a nut screwed on the screw rod and positioned at the side part of the two fixing plates away from each other;
and screwing the nut to enable the nut to push the corresponding fixed plates, so that the two fixed plates are close to each other to push the FRP cloth in the direction close to the web members, and the FRP cloth is stretched to apply prestress to the FRP cloth on two sides of the truss.
Further, the method also comprises the following steps:
and providing a batten, and winding the batten on the end part of the FRP cloth and the corresponding first chord member or second chord member.
Furthermore, the filling layer is filled between the FRP cloth and the web members.
The prestressed FRP cloth reinforced truss structure provided by the invention has the advantages that the FRP cloth is arranged along the web member direction of the corresponding truss, and the two ends of the FRP cloth are tensioned and fixed on the first chord member and the second chord member, so that the truss is pulled, the average stress and the stress amplitude at the connecting welding seam between the chord member and the web member when the truss is stressed are reduced, the stress characteristic is improved, the prestress is conveniently applied to the FRP cloth through the fixing plate, the interval of the fixing plate module is adjusted, the prestress of the FRP cloth can be adjusted, the efficiency of reinforcing the truss by the FRP cloth is improved, the filling layer is filled between the FRP cloth and the web member, so that the connection between the FRP cloth and the truss is enhanced, the stability of the FRP cloth reinforced truss is improved, and the FRP cloth is protected.
Drawings
Fig. 1 is a front view of a structure of a prestressed FRP cloth reinforced truss according to the present invention.
Fig. 2 is a schematic view of section a-a in fig. 1 before screwing the nut.
Fig. 3 is a schematic view of the cross section a-a of fig. 1 after screwing the nut.
Fig. 4 is a schematic diagram of the prestressed FRP cloth reinforced truss structure after a filling layer is constructed.
Fig. 5 is a schematic view of section B-B in fig. 1 before screwing the nut.
Fig. 6 is a schematic view of the cross section B-B of fig. 1 after screwing the nut.
The correspondence of reference numerals to components is as follows: truss 1, first chord member 11, second chord member 12, web member 13, FRP cloth 2, fixed plate 3, screw 4, nut 5, filling layer 6, layering 7.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 1 to 3, the present invention provides a prestressed FRP cloth reinforced truss structure, in which a truss 1 is formed with a first chord 11 and a second chord 12 which are oppositely arranged, a plurality of web members 13 are obliquely connected between the first chord 11 and the second chord 12, and side portions of the first chord 11 and the second chord 12 protrude out of side portions of the web members 13, the structure including:
the FRP cloths 2 correspond to the web members 13 and are oppositely arranged on two sides of the web members 13, one end of each FRP cloth 2 is fixed at the end part of the first chord member 11, the other end of each FRP cloth 2 is fixed at the side part of the second chord member 12, and a space is reserved between the side part of each web member 13 and the corresponding part of each FRP cloth 2; and
the fixing plate 3 is fixed on the surface of the FRP cloth 2 far away from the web member 13;
connect between two relative fixed plates 3 and adjustable length's regulating part through the length of adjusting the regulating part for two fixed plates 3 are close to each other to push up FRP cloth 2 to the direction that is close to web member 13, thereby stretch-draw FRP cloth 2, in order to exert prestressing force to FRP cloth 2.
According to the structure of the prestressed FRP cloth reinforced truss, the FRP cloth 2 is arranged along the direction corresponding to the web member 13 of the truss 1, and two ends of the FRP cloth 2 are respectively fixed to the first chord member 11 and the second chord member 12, so that the average stress and the stress amplitude of the connecting welding seam between the chord member and the web member when the truss is stressed are reduced, the stress characteristic is improved, the prestress is applied to the FRP cloth 2 through the fixing plate 3, the size of the prestress of the FRP cloth 2 can be adjusted by adjusting the distance between the fixing plates 3, and the truss reinforcing efficiency of the FRP cloth 2 is improved.
Preferably, as shown in fig. 1, the web members 13 are obliquely connected between the first chord 11 and the second chord 12, and the web members 13 can be divided into tension web members and compression web members according to the form of force, and the tension web members and the compression web members are connected in a V-shape.
Preferably, the FRP cloth 2 is disposed corresponding to the tension web.
As shown in fig. 2 to 2, the adjusting member includes a screw rod 4 penetrating through the two opposite fixing plates 3 and a nut 5 screwed on the screw rod 4 and located at the side of the two fixing plates 3 away from each other; by screwing the nut 5, the nut 5 pushes the corresponding fixing plate 3, so that the two fixing plates 3 approach each other to push the FRP cloth 2 in a direction close to the web member 13, thereby stretching the FRP cloth 2 and applying prestress to the FRP cloth 2 at both sides of the truss 1.
Preferably, as shown in fig. 1, two sets of fixing plates 3 are correspondingly disposed at the same web member 13, two ends of the fixing plates 3 protrude out of the web member 13, a through hole for passing through the screw rod 4 is disposed at the position protruding out of the web member 13, and two ends of the corresponding fixing plates 3 are respectively provided with the screw rod 4.
Further, as shown in fig. 1, the FRP cloth 2 further includes a bead 7 wound around an end of the FRP cloth 2 and the corresponding first chord 11 or second chord 12 to fixedly connect the FRP cloth 2 and the first chord 11 or the FRP cloth 2 and the second chord 12.
Preferably, the FRP cloth 2 is a CFRP cloth.
Preferably, the batten 7 is also made of CFRP cloth, and the end of the FRP cloth 2 is pressed by the batten 7 to reinforce the connection between the end of the FRP cloth 2 and the chord 11.
Preferably, as shown in fig. 2 and 5, the FRP cloths 2 on the two side surfaces of the web 13 are oppositely arranged, and a space is formed between the FRP cloths 2 and the web 13 corresponding to the position of the web 13; as shown in fig. 3 and 6, after the screw nut 6 applies a prestress to the FRP cloth 2, the FRP cloth 2 corresponding to the fixing plate 3 is attached to the web 13, so that the FRP cloth 2 and the truss 1 work cooperatively, the strength of the FRP cloth 2 is ensured to be fully exerted, and the reinforcing effect and the stability of the truss 1 are improved. .
Further, the FRP cloth 2 is adhered to the surfaces of the first chord 11 and the second chord 12 by structural adhesive.
Specifically, as shown in fig. 4, the FRP cloth 2 further includes a filler layer 6 formed between the FRP cloth 2 and the web 13.
Preferably, the filling layer 6 is formed by filling structural adhesive, and the filling layer 6 strengthens the connection between the FRP cloth 2 and the truss, so as to improve the stability of the FRP cloth 2 for reinforcing the truss and simultaneously protect the FRP cloth 2.
Preferably, one end of the FRP cloth 2 is fixed to the first chord 11 in a winding manner, the other end of the FRP cloth 2 is attached to the side portion of the first chord 11, extends along the extending direction of the web member 13 and is fixed to the second chord 12 in a winding manner, and a plurality of FRP cloths 2 can be overlapped at a position corresponding to one web member 13, so as to improve the reinforcing effect on the truss 1.
The concrete embodiment of the structure of the prestressed FRP cloth reinforced truss is that structural adhesive is coated on a first chord 11 and a second chord 12, at one side surface of a web member 13, FRP cloth 2 is corresponding to one side surface of a tensile web member, one end of the FRP cloth 2 is wound on the side part of the first chord 11 and is fixedly adhered, the other end of the FRP cloth 2 is wound on the side part of the second chord 12 and straightens the FRP cloth 2, the FRP cloth 2 is further fixed with the second chord 12, and the other FRP cloth 2 is fixedly adhered on the other side surface of the web plate 13 according to the operation;
winding the batten 7 on the end part of the FRP cloth 2 and the corresponding position of the first chord 11 or the second chord 12 to further fix the FRP cloth 2, correspondingly fixing the two groups of fixing plates 3 on the side surfaces, far away from the web member 13, of the FRP cloth 2, penetrating the screw rods 4 into the fixing plates 3, further screwing the nuts 5 on the screw rods 4 and positioned on the side parts, far away from each other, of the two fixing plates 3, enabling the two fixing plates 3 to be close to each other, pushing the FRP cloth 2 in the direction close to the web member 13, tensioning the FRP cloth 2, and applying prestress to the FRP cloth 2 on the two sides of the truss 1;
and filling structural adhesive between the FRP cloth 2 and the web members 13 to form a filling layer 6 so as to reinforce the truss 1.
A construction method of a prestressed FRP cloth reinforced truss structure comprises the following steps:
providing a plurality of FRP cloth 2, arranging the FRP cloth 2 on two sides of a web 13, respectively fixing two ends of the FRP cloth 2 on a first chord 11 and a second chord 12, and keeping a distance between the side part of the web 13 and the corresponding part of the FRP cloth 2;
providing a plurality of fixing plates 3, and fixing the fixing plates 3 on the surface of the FRP cloth 2 far away from the web member 13;
providing an adjusting piece, connecting the adjusting piece between two opposite fixing plates 3, and then adjusting the length of the adjusting piece, so that the two fixing plates 3 are close to each other to push the FRP cloth 2 in the direction close to the web member 13, thereby tensioning the FRP cloth 2 to apply prestress to the FRP cloth 2 at two sides of the truss 1.
Furthermore, the adjusting part comprises a screw rod penetrating through the two fixing plates and a nut screwed on the screw rod and positioned at the side part of the two fixing plates away from each other; and screwing the nut 5 to enable the nut 5 to push the corresponding fixing plate 3, so that the two fixing plates 3 are close to each other to push the FRP cloth 2 in the direction close to the web member 13, thereby tensioning the FRP cloth 2, and applying prestress to the FRP cloth 2 on two sides of the truss 1.
Further, the method also comprises the following steps: and providing a batten 7, and winding the batten 7 on the end part of the FRP cloth 2 and the corresponding first chord 11 and second chord 12.
Furthermore, the filling layer 6 is filled between the FRP cloth 2 and the web members 13.
The concrete embodiment of the structure of the prestressed FRP cloth reinforced truss is that structural adhesive is coated on a first chord 11 and a second chord 12, at one side surface of a web member 13, FRP cloth 2 is corresponding to one side surface of a tensile web member, one end of the FRP cloth 2 is wound on the side part of the first chord 11 and is fixedly adhered, the other end of the FRP cloth 2 is wound on the side part of the second chord 12 and straightens the FRP cloth 2, the FRP cloth 2 is further fixed with the second chord 12, and the other FRP cloth 2 is fixedly adhered on the other side surface of the web plate 13 according to the operation;
winding the batten 7 on the end part of the FRP cloth 2 and the corresponding position of the first chord 11 or the second chord 12 to further fix the FRP cloth 2, correspondingly fixing the two groups of fixing plates 3 on the side surfaces, far away from the web member 13, of the FRP cloth 2, penetrating the screw rods 4 into the fixing plates 3, further screwing the nuts 5 on the screw rods 4 and positioned on the side parts, far away from each other, of the two fixing plates 3, enabling the two fixing plates 3 to be close to each other, pushing the FRP cloth 2 in the direction close to the web member 13, tensioning the FRP cloth 2, and applying prestress to the FRP cloth 2 on the two sides of the truss 1;
and filling structural adhesive between the FRP cloth 2 and the web members 13 to form a filling layer 6 so as to reinforce the truss 1.
While the present invention has been described in detail and with reference to the accompanying drawings and examples, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A structure of a prestressed FRP cloth reinforced truss, the truss is formed with a first chord member and a second chord member which are oppositely arranged, a plurality of web members are obliquely connected between the first chord member and the second chord member, and the side parts of the first chord member and the second chord member protrude out of the side parts of the web members, the structure is characterized by comprising:
the FRP cloths correspond to the web members and are oppositely arranged on two sides of the web members, one end of each FRP cloth is fixed on the side part of the first chord member, the other end of each FRP cloth is fixed on the side part of the second chord member, and a space is reserved between the side part of the web member and the corresponding part of each FRP cloth; and
the fixing plate is fixed on the surface of the FRP cloth, which is far away from the web member;
the adjusting piece is connected between the two opposite fixing plates and adjustable in length, the two fixing plates are enabled to be close to each other by adjusting the length of the adjusting piece, the FRP cloth is pushed in the direction close to the web members, and therefore the FRP cloth is tensioned, and prestress is applied to the FRP cloth.
2. The prestressed FRP cloth-reinforced truss structure as claimed in claim 1, wherein the adjusting member comprises a screw rod inserted through the two opposite fixing plates and a nut screwed to the screw rod and located at the side where the two fixing plates are far away from each other;
and the nut is screwed to push the corresponding fixing plates, so that the two fixing plates are close to each other to push the FRP cloth in the direction close to the web member, thereby tensioning the FRP cloth and applying prestress to the FRP cloth on two sides of the truss.
3. The prestressed FRP cloth reinforced truss structure as claimed in claim 1, further comprising a batten wound around an end of the FRP cloth and the corresponding first chord or the second chord to fixedly connect the FRP cloth and the first chord or the FRP cloth and the second chord.
4. The prestressed FRP cloth reinforced truss structure as recited in claim 1, wherein the FRP cloth is adhered to the surface of the first chord or the second chord by a structural adhesive.
5. The prestressed FRP cloth reinforced truss structure as recited in claim 1, further comprising a filling layer formed between the FRP cloth and the web member.
6. The prestressed FRP cloth reinforced truss structure as recited in claim 1, wherein one end of the FRP cloth is wound around and fixed to the first chord, and the other end of the FRP cloth is attached to a side portion of the first chord, extends in a direction in which the web member extends, and is wound around and fixed to the second chord.
7. A construction method of a prestressed FRP cloth reinforced truss structure as claimed in claim 1, comprising the steps of:
providing a plurality of FRP cloth, arranging the FRP cloth on two sides of the web plate, respectively fixing two ends of the FRP cloth on the first chord and the second chord, and enabling a space to be reserved between the side part of the web member and the corresponding part of the FRP cloth;
providing a plurality of fixing plates, and fixing the fixing plates on the surface of the FRP cloth away from the web member;
providing an adjusting piece, connecting the adjusting piece between the two opposite fixing plates, and further adjusting the length of the adjusting piece, so that the two fixing plates are close to each other to push the FRP cloth in the direction close to the web members, and thus tensioning the FRP cloth to apply prestress to the FRP cloth on two sides of the truss.
8. The construction method of the prestressed FRP cloth reinforced truss structure as claimed in claim 7, wherein the adjusting member comprises a screw rod inserted into the two fixing plates and a nut screwed to the screw rod and located at the side where the two fixing plates are far away from each other;
and screwing the nut to enable the nut to push the corresponding fixing plates, so that the two fixing plates are close to each other to push the FRP cloth in the direction close to the web members, and the FRP cloth is tensioned, so that prestress is applied to the FRP cloth on two sides of the truss.
9. The construction method of the prestressed FRP cloth reinforced truss structure as recited in claim 8, further comprising:
and providing a batten, and winding the batten on the end part of the FRP cloth and the corresponding first chord or the second chord.
10. The method of constructing a prestressed FRP cloth-reinforced truss structure as recited in claim 9, further comprising filling the space between said FRP cloth and said web members to form said filling layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044510.5A CN113668894A (en) | 2021-09-07 | 2021-09-07 | Structure of prestressed FRP cloth reinforced truss and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111044510.5A CN113668894A (en) | 2021-09-07 | 2021-09-07 | Structure of prestressed FRP cloth reinforced truss and construction method thereof |
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| Publication Number | Publication Date |
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| CN113668894A true CN113668894A (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111044510.5A Pending CN113668894A (en) | 2021-09-07 | 2021-09-07 | Structure of prestressed FRP cloth reinforced truss and construction method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100748079B1 (en) * | 2006-08-10 | 2007-08-09 | 한국건설기술연구원 | Structure strengthening and repairing method using the anchorage apparatus for multi frp strip |
| CN204163276U (en) * | 2014-11-17 | 2015-02-18 | 上海电力设计院有限公司 | The large span heat-net-pipeline steel truss of Shi Hanzhang |
| CN110219230A (en) * | 2019-06-13 | 2019-09-10 | 福州大学 | Concrete Filled Steel-tube Truss Arch Bridge web member replacement construction and construction method |
| CN110984615A (en) * | 2019-12-18 | 2020-04-10 | 重庆科技学院 | CFRP sheet combination beam string reinforcing and mounting system |
| CN113338658A (en) * | 2021-06-25 | 2021-09-03 | 贵州桥梁建设研究院有限公司 | Reinforcing system and reinforcing method for T-shaped beam web |
-
2021
- 2021-09-07 CN CN202111044510.5A patent/CN113668894A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100748079B1 (en) * | 2006-08-10 | 2007-08-09 | 한국건설기술연구원 | Structure strengthening and repairing method using the anchorage apparatus for multi frp strip |
| CN204163276U (en) * | 2014-11-17 | 2015-02-18 | 上海电力设计院有限公司 | The large span heat-net-pipeline steel truss of Shi Hanzhang |
| CN110219230A (en) * | 2019-06-13 | 2019-09-10 | 福州大学 | Concrete Filled Steel-tube Truss Arch Bridge web member replacement construction and construction method |
| CN110984615A (en) * | 2019-12-18 | 2020-04-10 | 重庆科技学院 | CFRP sheet combination beam string reinforcing and mounting system |
| CN113338658A (en) * | 2021-06-25 | 2021-09-03 | 贵州桥梁建设研究院有限公司 | Reinforcing system and reinforcing method for T-shaped beam web |
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Application publication date: 20211119 |