CN202826546U - Composite pipe concrete combination structure - Google Patents
Composite pipe concrete combination structure Download PDFInfo
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- CN202826546U CN202826546U CN 201220551839 CN201220551839U CN202826546U CN 202826546 U CN202826546 U CN 202826546U CN 201220551839 CN201220551839 CN 201220551839 CN 201220551839 U CN201220551839 U CN 201220551839U CN 202826546 U CN202826546 U CN 202826546U
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Abstract
The utility model relates to a composite pipe concrete combination structure. The composite pipe concrete combination structure is characterized by comprising internal concrete (1), a steel pipe (2), a transverse pre-stressing steel wire (3) and fiber reinforced plastic (4), wherein the transverse pre-stressing steel wire (3) is transversely and uniformly wound around the outer wall of the steel pipe (2) when a pre-stressing force is applied to a steel wire, the fiber reinforced plastic (4) is adhered to the outer surface of the transverse pre-stressing steel wire (3) on the outmost layer, and the internal concrete (1) is filled in the steel pipe (2); and the winding space of the transverse pre-stressing steel wire (3) is not larger than 40mm. The composite pipe concrete combination structure disclosed by the utility model can be used for overcoming the known defects of a steel pipe concrete and FRP (fiber reinforce plastic)-steel composite pipe concrete structure, has the advantages of high yield load, large bearing capacity reserve, great ductility, slow failure mode, great durability and the like, and especially has a stable and continuous descending stage; and meanwhile, the composite pipe concrete combination structure is lower in cost. The composite pipe concrete combination structure disclosed by the utility model is suitable for piles, columns, piers and arch ribs in a newly established structure, and is applied to reinforcing components mainly under stress in the traditional reinforced concrete structure and the traditional steel pipe concrete structure.
Description
Technical field
The utility model relates to a kind of xoncrete structure, and especially a kind of multiple tube concrete combined structure belongs to the civil engineering structure technical field.
Background technology
Chinese scholars has been carried out a large amount of research and application to concrete filled steel tube for many years, it has the advantages such as the good and easy construction of anti-seismic performance, simultaneously recognize that also concrete filled steel tube has following shortcomings and deficiencies: steel pipe should bear the vertical stress of moment of flexure and xial feed generation, bear again the lateral stress that shearing and concrete expansion produce, two-dimensional state of stress will reduce the effect of restraint of steel pipe, shift to an earlier date the cripling of steel pipe, Low-cycle Test shows, this cripling will cause unsettled hysteresis circulation, reduce the ductility of member, and this inefficacy is difficult to repair; Because the plastic-elastic stress-strain stress relation of steel will be limited to definite value in case steel pipe is surrendered its restraining force, element bearing capacity no longer increases, and safety stock is low; The steel strength that steel pipe adopts is lower, for large-scale high axle power xoncrete structure, must adopt thick walled steel tube, and steel using amount is large, and processing difficulties is uneconomical; Steel pipe faces corrosion, a durability difficult problem.
Fibre reinforced plastics (FRP) have lightweight, high-strength, corrosion resistant good characteristic, in the civil engineering seismic hardening, the reinforcement field has obtained generally using, difference according to fibre reinforcement, FRP can be divided into fiberglass reinforced plastics (GFRP), carbon fibre reinforced plastic (CFRP), aromatic polyamide fiber reinforced plastics (AFRP), Basalt fiber reinforced plastic (BFRP) etc., which kind of fibre reinforced plastics no matter, its limit of stretch fracture all is brittle fracture, and show as linear strain-stress relation, it is outer in the hope of improving the performance of concrete filled steel tube simply FRP to be wrapped in concrete filled steel tube, such as No. " 201120387820.2 ", Chinese patent, a kind of " a kind of fiber-steel pipe reinforced concrete bridge pier " disclosed, although overcome to a certain extent the defective of concrete pier of steel tube, but still there is a following application difficult problem in it: because the response lag of FRP, and the yield load that FRP at all can not change structure; Because the limiting strain ability of FRP is low, the distortion of experiencing to the FRP fracture after the structure surrender is very little, requires not conform to structure ductility; Because the fracture fragility of FRP, when reaching peak load FRP fracture, failure mode is violent, and the bearing capacity decrease speed is fast; Because the cost of FRP is high, the FRP of conventional twining amount is difficult to obtain the raising of large bearing capacity.
The utility model provides a kind of multiple tube concrete combined structure, to overcome the defective that exists in the prior art, satisfies the application needs of engineering.
Summary of the invention
The purpose of this utility model provides a kind of multiple tube concrete combined structure, in the hope of solving the defective of existing concrete filled steel tube, FRP-steel pipe xoncrete structure, so that structure has the failure mode of higher yield load, enough bearing capacity deposit, ductility and mitigation.This structure is applicable to stake, post, bridge pier, the arch rib in the newly-built structure simultaneously, and in the existing reinforced concrete structure, concrete filled steel tube take pressurized as main strengthening member.
For this reason, the utility model provides a kind of multiple tube concrete combined structure, and this structure comprises inner concrete, steel pipe, transverse prestress steel wire, fibre reinforced plastics; Wherein, the transverse prestress steel wire is wound in the outer wall of steel pipe by steel wire being applied the horizontal continuous uniform of prestressing force, and fibre reinforced plastics are pasted on the outer surface of outermost layer transverse prestress steel wire, and inner Concrete Filled is in the inside of steel pipe; Transverse prestress steel wire and fibre reinforced plastics respectively are more than 1 layer and 1 layer, its steel wire or machine direction and steel pipe transverse inclination angle are between-30 ° to 30 °, each layer steel wire and machine direction can be identical or different, and the winding spacing of transverse prestress steel wire is not more than 40mm; The transverse prestress steel wire is by epoxy resin, vinylite, polyurethane resin or the epoxy resin mortar realization bonding with steel pipe.
In structure of the present utility model, inner concrete is when pressurized, because the transverse prestress steel wire has been set up certain pre-tensile stress in winding process, there is not response lag between transverse prestress steel wire and the steel pipe, transverse prestress steel wire and steel pipe are brought into play effect of contraction simultaneously, therefore the yield load of structure has obtained effectively increasing substantially, after the structure surrender, fibre reinforced plastics produce gradually to the effect of contraction of core concrete, the bearing capacity of core concrete is further improved, behind the fibre reinforced plastics fracture, the transverse prestress steel wire that strengthens main body as constraint continues to produce effect of contraction, still can keep the bearing capacity growth that structure continues, because the limiting strain of elastoplasticity steel wire is very large, when extremely corresponding peak load transverse prestress steel wire ruptures first after the structure surrender, structure possesses the ability that moderate finite deformation occurs, simultaneously, because the winding spacing of transverse prestress steel wire is not more than 40mm, it is separate to guarantee respectively to encircle transverse prestress steel wire fracture process, also namely respectively encircle the in succession successively fracture in load bearing process of transverse prestress steel wire, each ring transverse prestress steel wire fracture produces a by a small margin decline of structural bearing capacity, thereby so that dropping to residual bearing capacity by maximum load capacity, structure slowly occurs, realized the failure mode that structure relaxes, when the operative constraint that loses because of a large amount of transverse prestress steel wire fractures steel pipe, still there is steel pipe that inner concrete is retrained, thereby guarantees that structure has certain residual bearing capacity.
In structure of the present utility model, can be as required, along steel pipe longitudinal steel wire evenly is set axially around the steel pipe, the number of plies of longitudinal steel wire is unrestricted, can be 0 layer, more than 1 layer or 1 layer, be arranged between transverse prestress steel wire and the steel pipe or between each layer of transverse prestress steel wire, by the enhancing of longitudinal steel wire, to realize the raising to the vertical anti-bending bearing capacity of structure.
Effective prestress in the described transverse prestress steel wire is not less than 100MPa, preventing the response lag of transverse prestress steel wire, and improves the laterally effect of compressor wire performance under the routine use load.
Described steel wire is that tensile strength is more than or equal to ordinary steel wire, zinc-coated wire or the stainless steel steel wire of 1000MPa, the version of single Shu Gangsi is a kind of among 1 (root) * 1 (thigh), 1 (root) * n (thigh) or m (the root) * n (thigh), single bundle steel wire diameter is 0.1mm～5mm, because single bundle steel wire diameter is less, it is simple that prestressing force is set up process.
The fibre reinforcement of described fibre reinforced plastics is that a kind of or several specific admixtures wherein in glass fibre, carbon fiber, aramid fiber, basalt fibre or the polyester fiber form, and epoxy resin-impregnated, vinylite or polyurethane resin are realized and the bonding of transverse prestress steel wire outer wall.
Described inner inside concrete is provided with framework of steel reinforcement or type steel skeleton, and framework of steel reinforcement is formed by vertical, horizontal reinforcing bar binding or welding.
Described inner concrete is the self-compaction slightly expanded concrete.
The utility model has overcome known concrete filled steel tube, the existing defective of FRP-steel pipe xoncrete structure, have the yield load height, the advantages such as the bearing capacity deposit is large, ductility good, failure mode mitigation, good endurance, especially it has stable, the continuous decline stage, simultaneously, structure has lower cost.Concrete beneficial effect is as follows:
(1) yield load is high.Because the pre-tensile stress that the transverse prestress steel wire is set up in advance, so that transverse prestress steel wire and steel pipe can be brought into play effect of contraction simultaneously, relative common steel tube xoncrete structure, yield load is greatly enhanced, thereby reduce the design thickness of steel pipe, in addition, with respect to conventional FRP-steel pipe xoncrete structure, the intensity of fibre reinforcement before impregnation is extremely low, in fibre reinforced plastics be can't realize prestressed.
(2) the bearing capacity deposit is large.The tensile strength of transverse prestress steel wire is far longer than the yield strength of tube material more than or equal to 1000MPa, and it is extremely remarkable that bearing capacity improves effect, and the space that the structural bearing capacity continuation is risen after the surrender is large, and safety stock is large.
(3) ductility is good.Because the high ductility of the mechanics feature such as the elastoplasticity of transverse prestress steel wire, large strain and inner steel pipe, so that structure after surrender to peak load and finally drop to residual bearing capacity, structure possesses the ability that moderate finite deformation occurs, thereby shows good ductility.
(4) failure mode relaxes.(0.1mm～transverse prestress steel wire constraint 5mm) has fundamentally changed the brittle failure mode of conventional FRP-steel pipe xoncrete structure for little spacing (being not more than 40mm), minor diameter, each encircles the in succession successively fracture and separate of transverse prestress steel wire, obtained peak load stable, the continuous decline stage afterwards, failure mode relaxes.
(5) good endurance.Because the corrosion resistance of fibre reinforced plastics is for transverse prestress steel wire, longitudinal steel wire, steel pipe etc. provide the durability protection.
(6) cost is low.Taking full advantage of traditional material---steel wire when obtaining higher performance, has lower cost.
The utility model structure takes full advantage of the advantageous feature of the multiple materials such as concrete, steel pipe, steel wire, fibre reinforced plastics, has obtained preferably combination property.
Description of drawings:
Fig. 1 is the cross sectional representation without the multiple tube concrete combined structure of longitudinal steel wire;
Fig. 2 is the organigram without the multiple tube concrete combined structure of longitudinal steel wire;
Fig. 3 is the cross sectional representation of the multiple tube concrete combined structure of 1 layer of longitudinal steel wire, 1 layer of transverse prestress steel wire;
Fig. 4 is the organigram of the multiple tube concrete combined structure of 1 layer of longitudinal steel wire, 1 layer of transverse prestress steel wire;
Fig. 5 is the cross sectional representation of the multiple tube concrete combined structure of 2 layers of longitudinal steel wire, 2 layers of transverse prestress steel wire;
Fig. 6 is the organigram of the multiple tube concrete combined structure of 2 layers of longitudinal steel wire, 2 layers of transverse prestress steel wire;
Fig. 7 be the utility model multiple tube concrete combined structure and steel pipe/FRP-steel pipe xoncrete structure compression chord-strain curve relatively.
Accompanying drawing 1～accompanying drawing 6,1 be inner concrete, 2 for steel pipe, 3 for the transverse prestress steel wire, 4 for fibre reinforced plastics and 5 for longitudinal steel wire.
In accompanying drawing 7, shown in curve be respectively: A is the compression chord-strain curve of concrete filled steel tube; B is FRP-steel pipe xoncrete structure compression chord-strain curve; C is the utility model multiple tube concrete combined structure compression chord-strain curve; In the utility model multiple tube concrete combined structure compression chord-strain curve, a is that elastic stage, b are that surrender and strain, c are that decline stage, d are the remaining stage, and P is yield point, and K is each ring steel wire fracture point.
The specific embodiment:
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.The utility model provides a kind of multiple tube concrete combined structure, it is characterized in that this structure comprises inner concrete 1, steel pipe 2, transverse prestress steel wire 3, fibre reinforced plastics 4; Wherein, transverse prestress steel wire 3 is wound in the outer wall of steel pipe 2 by steel wire being applied the horizontal continuous uniform of prestressing force, and fibre reinforced plastics 4 are pasted on the outer surface of outermost layer transverse prestress steel wire 3, and inner concrete 1 is filled in the inside of steel pipe 2; Transverse prestress steel wire 3 and fibre reinforced plastics 4 respectively are more than 1 layer and 1 layer, its steel wire or machine direction and steel pipe transverse inclination angle are between-30 ° to 30 °, each layer steel wire and machine direction can be identical or different, and the winding spacing of transverse prestress steel wire 3 is not more than 40mm; Transverse prestress steel wire 3 is by epoxy resin, vinylite, polyurethane resin or the epoxy resin mortar realization bonding with steel pipe 2.
In structure of the present utility model, can be as required, axially around steel pipe 2, longitudinal steel wire 5 is set evenly along steel pipe 2, the number of plies of longitudinal steel wire 5 is unrestricted, can be 0 layer, more than 1 layer or 1 layer, be arranged between transverse prestress steel wire 3 and the steel pipe 2 or between each layer of transverse prestress steel wire 3.
In the implementation, at first steel pipe 2 surface finish are eliminated rust, determine the winding spacing of transverse prestress steel wire 3, angle and the number of plies, the winding spacing of each layer transverse prestress steel wire 3, angle can design as required, carry out subsequently the winding of transverse prestress steel wire 3, the pretension size that remains transverse prestress steel wire 3 in the winding process is constant, and brushing, epoxy resin-impregnated, vinylite, polyurethane resin or epoxy resin mortar are realized the bonding with steel pipe 2, every one deck transverse prestress steel wire 3 twines to be finished, carry out successively the winding of lower one deck transverse prestress steel wire 3, twine at last fibre reinforcement and epoxy resin-impregnated, vinylite or polyurethane resin, form outer field fibre reinforced plastics 4, namely finish the making of multiple tube.When longitudinal steel wire 5 was set, longitudinal steel wire 5 was arranged in the outer wall surface of steel pipe 2 outer wall surface or front one deck transverse prestress steel wire 3, and should be temporary fixed at steel pipe 2 two ends, fixed with the position that guarantees longitudinal steel wire 5 in the follow-up operation.After forming multiple tube, be transported to the job site and install and fix, prepare, build inner concrete 1.
Embodiment one:
Such as Fig. 1, Fig. 2, a kind of multiple tube concrete combined structure comprises inner concrete 1, steel pipe 2, transverse prestress steel wire 3, fibre reinforced plastics 4; Wherein, transverse prestress steel wire 3 is wound in the outer wall of steel pipe 2 by steel wire being applied the horizontal continuous uniform of prestressing force, fibre reinforced plastics 4 are pasted on the outer surface of transverse prestress steel wire 3, inner concrete 1 is filled in the inside of steel pipe 2, and transverse prestress steel wire 3 and fibre reinforced plastics 4 respectively are 1 layer.
Embodiment two:
Such as Fig. 3, Fig. 4, a kind of multiple tube concrete combined structure comprises inner concrete 1, steel pipe 2, transverse prestress steel wire 3, fibre reinforced plastics 4, longitudinal steel wire 5; Wherein, transverse prestress steel wire 3 is wound in the outer wall of steel pipe 2 by steel wire being applied the horizontal continuous uniform of prestressing force, fibre reinforced plastics 4 are pasted on the outer surface of transverse prestress steel wire 3, inner concrete 1 is filled in the inside of steel pipe 2, and transverse prestress steel wire 3 and fibre reinforced plastics 4 respectively are 1 layer.Simultaneously, be provided with 1 layer of longitudinal steel wire 5 between transverse prestress steel wire 3 and steel pipe 2, during implementation, longitudinal steel wire 5 axially evenly arranges around steel pipe 2 along steel pipe 2, and after steel pipe 2 two ends are temporary fixed, twine successively transverse prestress steel wire 3 and fibre reinforced plastics 4.
Embodiment three:
Such as Fig. 5, Fig. 6, a kind of multiple tube concrete combined structure comprises inner concrete 1, steel pipe 2, transverse prestress steel wire 3, fibre reinforced plastics 4, longitudinal steel wire 5; Wherein, transverse prestress steel wire 3 is wound in the outer wall of steel pipe 2 by steel wire being applied the horizontal continuous uniform of prestressing force, fibre reinforced plastics 4 are pasted on the outer surface of transverse prestress steel wire 3, inner concrete 1 is filled in the inside of steel pipe 2, transverse prestress steel wire 3 is 2 layers, and 2 layers winding spacing is different, and fibre reinforced plastics 4 are 1 layer.Simultaneously, the among that reaches 2 layers of transverse prestress steel wire 3 between transverse prestress steel wire 3 and steel pipe 2 is provided with 1 layer of longitudinal steel wire 5, during implementation, longitudinal steel wire 5 should be before lower one deck transverse prestress steel wire 3 twines along the axially evenly setting around the steel pipe 2 of steel pipe 2, and temporary fixed at steel pipe 2 two ends.
Aforesaid multiple tube concrete combined structure is characterized in that the effective prestress in the transverse prestress steel wire 3 is not less than 100MPa.
Aforesaid multiple tube concrete combined structure, it is characterized in that steel wire is that tensile strength is more than or equal to ordinary steel wire, zinc-coated wire or the stainless steel steel wire of 1000MPa, the version of single Shu Gangsi is a kind of in 1 * 1 strand, 1 * n thigh or the m root * n thigh, and single bundle steel wire diameter is 0.1mm～5mm.
Aforesaid multiple tube concrete combined structure, the fibre reinforcement that it is characterized in that fibre reinforced plastics 4 is that a kind of or several specific admixtures wherein in glass fibre, carbon fiber, aramid fiber, basalt fibre or the polyester fiber form, and epoxy resin-impregnated, vinylite or polyurethane resin are realized and the bonding of transverse prestress steel wire 3 outer walls.
Aforesaid multiple tube concrete combined structure is characterized in that inner concrete 1 inside is provided with framework of steel reinforcement or type steel skeleton, and framework of steel reinforcement is formed by vertical, horizontal reinforcing bar binding or welding.
Aforesaid multiple tube concrete combined structure is characterized in that inner concrete 1 is the self-compaction slightly expanded concrete.
In order to further specify operation principle of the present utility model and technique effect, Fig. 7 illustrated multiple tube concrete combined structure of the present utility model and steel pipe/FRP-steel pipe xoncrete structure compression chord-strain curve relatively.Compression chord-the strain curve of multiple tube concrete combined structure shows as elastic stage a, surrender and strain b, decline stage c and remaining stage d four-stage, in load bearing process, transverse prestress steel wire 3 can be brought into play effect of contraction simultaneously with steel pipe 2, and the relative common steel tube xoncrete structure of the payload values of yield point P is greatly enhanced; Because the effect of contraction of transverse prestress steel wire 3 and fibre reinforced plastics 4, structural bearing capacity continues to rise after the surrender, shows as surrender and strain b, and before 3 fractures of transverse prestress steel wire, larger distortion can occur structure, shows good ductility; Because each ring transverse prestress steel wire 3 can rupture in succession successively, and separate, has obtained peak load stable, continuous decline stage c afterwards, failure mode relaxes; When the operative constraint that loses because of a large amount of transverse prestress steel wire fractures steel pipe, steel pipe 2 can continue as inner concrete 1 certain restraining force is provided, and keeps the higher residual bearing capacity of structure, i.e. remaining stage d.Compression chord-the strain curve of the utility model structure shows yield point height, safety stock is large, ductility is good superperformance, possesses programmable decline stage and programmable surrender and strain.
The utility model is compared with existing steel pipe/FRP-steel pipe xoncrete structure has larger advantage, under the accidents such as earthquake, bump, overload, can be structure anti-ly collapse, postponing to collapse provides reliable guarantee.
Claims (7)
1. the multiple tube concrete combined structure is characterized in that this structure comprises inner concrete (1), steel pipe (2), transverse prestress steel wire (3), fibre reinforced plastics (4); Wherein, transverse prestress steel wire (3) is wound in the outer wall of steel pipe (2) by steel wire being applied the horizontal continuous uniform of prestressing force, fibre reinforced plastics (4) are pasted on the outer surface of outermost layer transverse prestress steel wire (3), and inner concrete (1) is filled in the inside of steel pipe (2); Transverse prestress steel wire (3) and fibre reinforced plastics (4) respectively are more than 1 layer and 1 layer, its steel wire or machine direction and steel pipe transverse inclination angle are between-30 ° to 30 °, each layer steel wire and machine direction can be identical or different, and the winding spacing of transverse prestress steel wire (3) is not more than 40mm; Transverse prestress steel wire (3) is by epoxy resin, vinylite, polyurethane resin or the epoxy resin mortar realization bonding with steel pipe (2).
2. multiple tube concrete combined structure according to claim 1, it is characterized in that axially along steel pipe (2) longitudinal steel wire (5) being set evenly all around along steel pipe (2), the number of plies of longitudinal steel wire (5) is unrestricted, can be 0 layer, more than 1 layer or 1 layer, be arranged between transverse prestress steel wire (3) and the steel pipe (2) or between each layer of transverse prestress steel wire (3).
3. multiple tube concrete combined structure according to claim 1 is characterized in that the effective prestress in the transverse prestress steel wire (3) is not less than 100MPa.
4. multiple tube concrete combined structure according to claim 1, it is characterized in that steel wire is that tensile strength is more than or equal to ordinary steel wire, zinc-coated wire or the stainless steel steel wire of 1000MPa, the version of single Shu Gangsi is a kind of in 1 * 1 strand, 1 * n thigh or the m root * n thigh, and single bundle steel wire diameter is 0.1mm～5mm.
5. multiple tube concrete combined structure according to claim 1, the fibre reinforcement that it is characterized in that fibre reinforced plastics (4) is that a kind of or several specific admixtures wherein in glass fibre, carbon fiber, aramid fiber, basalt fibre or the polyester fiber form, and epoxy resin-impregnated, vinylite or polyurethane resin are realized and the bonding of transverse prestress steel wire (3) outer wall.
6. multiple tube concrete combined structure according to claim 1 is characterized in that inner concrete (1) inside is provided with framework of steel reinforcement or type steel skeleton, and framework of steel reinforcement is formed by vertical, horizontal reinforcing bar binding or welding.
7. multiple tube concrete combined structure according to claim 1 is characterized in that inner concrete (1) is the self-compaction slightly expanded concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551839 CN202826546U (en) | 2012-10-24 | 2012-10-24 | Composite pipe concrete combination structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551839 CN202826546U (en) | 2012-10-24 | 2012-10-24 | Composite pipe concrete combination structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936941A (en) * | 2012-10-24 | 2013-02-20 | 南京林业大学 | Composite pipe concrete composite structure |
| CN104631308A (en) * | 2015-03-16 | 2015-05-20 | 南京工业大学 | Reinforced concrete composite pier with strong impact resistance |
| CN106352165A (en) * | 2016-10-10 | 2017-01-25 | 北京中水科海利工程技术有限公司 | Prestressed carbon fiber reinforced structure design of prestressed concrete cylinder pipe (PCCP) |
| CN110216790A (en) * | 2019-05-05 | 2019-09-10 | 江苏建筑职业技术学院 | A kind of reinforcing bar strengthening part and production technology |
-
2012
- 2012-10-24 CN CN 201220551839 patent/CN202826546U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936941A (en) * | 2012-10-24 | 2013-02-20 | 南京林业大学 | Composite pipe concrete composite structure |
| CN102936941B (en) * | 2012-10-24 | 2015-06-03 | 南京林业大学 | Composite pipe concrete composite structure |
| CN104631308A (en) * | 2015-03-16 | 2015-05-20 | 南京工业大学 | Reinforced concrete composite pier with strong impact resistance |
| CN106352165A (en) * | 2016-10-10 | 2017-01-25 | 北京中水科海利工程技术有限公司 | Prestressed carbon fiber reinforced structure design of prestressed concrete cylinder pipe (PCCP) |
| CN106352165B (en) * | 2016-10-10 | 2018-08-31 | 北京中水科海利工程技术有限公司 | A kind of PCCP pipes pre-stressed carbon fiber reinforcing structure design |
| CN110216790A (en) * | 2019-05-05 | 2019-09-10 | 江苏建筑职业技术学院 | A kind of reinforcing bar strengthening part and production technology |
| CN110216790B (en) * | 2019-05-05 | 2021-04-16 | 江苏建筑职业技术学院 | Steel rib reinforcing part and production process |
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Granted publication date: 20130327 Termination date: 20131024 |