CN104405136A - Non-tension type fiber pre-stress application method - Google Patents
Non-tension type fiber pre-stress application method Download PDFInfo
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- CN104405136A CN104405136A CN201410608299.9A CN201410608299A CN104405136A CN 104405136 A CN104405136 A CN 104405136A CN 201410608299 A CN201410608299 A CN 201410608299A CN 104405136 A CN104405136 A CN 104405136A
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Abstract
The invention relates to a non-tension type fiber pre-stress application method. The method comprises the following steps: reversely turning over a turnover beam or plate, namely facing the lower surface of the turnover beam or plate upwards, and coating a structural adhesive on the lower surface of the reverse beam body under the action of dead weight or reverse load; laying a plurality of longitudinal fiber rods along the longitudinal direction of the turnover beam or plate on the turnover beam or plate coated with the structural adhesive, and then recoating the structural adhesive on the upper sides of the longitudinal fiber rods; laying a plurality of transverse fiber rods along the transverse direction of the turnover beam or plate, wrapping the thickness of the turnover beam or plate by the transverse fiber rods, then recoating the structural adhesive on the upper sides of the transverse fiber rods, until n layers of longitudinal fiber rods and n layers of transverse fiber rods required by design are coated; then placing the obtained beam in a natural environment for drying, and reversely lifting the turnover beam or plate after the beam is completely dried, wherein the turnover beam or plate is used in the state. According to the method, the structural bearing capacity of the beam is obviously increased, and the problem of original pre-stress fiber reinforcement anchorage is solved.
Description
Technical field
The present invention relates to a kind of method that non-stretching type fiber prestress applies, particularly relate to a kind of method that non-stretching type fiber prestress on the beam of construction work applies.
Background technology
In the prior art, the upper surface of construction work beam is under pressure, and soffit under tension, and the maximal destruction limiting value of material under tension will out and away lower than the maximal destruction limiting value of material under tension, beam, in engineering practice, is all that its soffit is destroyed because the pulling force be subject to is greater than maximal destruction limiting value usually.So the pulling force increasing beam soffit becomes the pursuit of engineers and technicians, traditional prestressing method adopts ground tackle and opens instrument, to structure Shi Hanzhang, improves structural bearing capacity; Fibrous material, as a kind of novel Materials with High Strength, has good tensile strength, is a kind of desirable prestressed material, but tensioning equipment and ground tackle complexity, and cost-effective fruit is poor; The inventive method utilizes the method for dead load or reversed load, to beam, plated construction Shi Hanzhang, for fiber prestress muscle applies to provide a kind of new approach.
Technology contents
The goal of the invention of the application is to provide simply a kind of and method is to strengthen construction work beam structural initial pre stress easily, and a kind of method namely providing non-stretching type fiber prestress to apply, strengthens the bearing capacity of construction work beam.
In order to complete the goal of the invention of the application, the present invention by the following technical solutions:
The method of a kind of non-stretching type fiber prestress applying of the application, it comprises the following steps:
A flip beam or plate are carried out reverse flip by (), namely the soffit of flip beam or plate upwards, and the downward freely-supported of upper surface is placed in a plane;
B () is by least 1/3 soffit dabbing of flip beam or plate and after cleaning up, form coated face, coating structure glue on above-mentioned coated face;
C () is on the flip beam being coated with structure glue or plate, longitudinal direction along flip beam or plate lays some longitudinal fiber bars, the width 10-20cm of longitudinal fiber bar, the spacing between adjacent longitudinal fiber bar is 10-20cm, then coating structure glue again on longitudinal fiber bar; Transverse direction along flip beam or plate lays some transverse fiber bars, the width 10-20cm of transverse fiber bar, spacing between adjacent transverse ribbon is 10-20cm, and transverse fiber bar encases the thickness of flip beam or plate, then coating structure glue again on transverse fiber bar;
D () repeats step (c), until be coated with n layer longitudinal fiber bar and the n layer transverse fiber bar of design;
E () is at outer enclosure one layer concrete of flip beam or plate, then drying is carried out under obtained flip beam or plate being placed on natural environment, after its bone dry, flip beam or plate are oppositely lifted, namely the upper surface of flip beam or plate upwards, soffit is placed in a plane downwards, and flip beam or plate use in this condition.
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: between described step (a) and step (b), from flip beam or length place, plate length two ends 1/4, on flip beam or plate, apply two external force, above-mentioned two external force are less than the yield force of this flip beam or plate respectively;
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: the hot strength of described longitudinal fiber bar and transverse fiber bar is more than 50 times of flip beam or plate stretching intensity; The modulus of elasticity of described longitudinal fiber bar and transverse fiber bar is more than 10 times of beam modulus of elasticity;
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: described longitudinal fiber bar and transverse fiber bar are cloth;
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: described n layer is 1-20 layer;
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: described longitudinal fiber bar and transverse fiber bar are the combination of one or more of carbon fiber, acrylic fiber, aramid fiber or basalt fibre;
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: described flip beam or plate are concrete beam or girder steel;
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: it is characterized in that: the cross section of described flip beam or plate is rectangle, T-shaped or I shape.
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: the length of described flip beam or plate is at least greater than 10 meters.
The method of a kind of non-stretching type fiber prestress applying of the application, wherein: the length of described flip beam or plate (1) is at least greater than 30 meters.
The method of the application, compared with the method for the soffit of increase beam of the prior art, has the following advantages:
(1) method of the present invention is to beam Shi Hanzhang, adopts dead load and reversed load, does not need tensioning equipment and ground tackle, to beam and slab structure Shi Hanzhang
(2) use method of the present invention, construction is simple, carrys out method Shi Hanzhang, the external loads such as balanced structure deadweight by non-;
(3) this aspect method is used, the loss of customer service fiber prestress muscle anchor lower prestress;
(4) the inventive method, adopt high performance fibre material as reinforcement material, add the structural bearing capacity of beam, the bending resistance of beam significantly improves.
(5) compared with method of the present invention is reinforced with traditional carbon fibres, by structure upset to fibrous material Shi Hanzhang, add the structural strength of beam, the bending resistance of beam also obviously increases, adopt construction method, to cloth Shi Hanzhang, overcome original pre-stress fibre muscle anchorage problem.
Accompanying drawing explanation
Fig. 1 is the forward schematic diagram of the beam produced by the method that non-stretching type fiber prestress of the present invention applies;
Fig. 2 is bowing to schematic diagram of Fig. 1.
For the sake of clarity, in Fig. 1 and Fig. 2 only for one deck longitudinal fiber bar and one deck transverse fiber bar.
In fig. 1 and 2, label 1 is flip beam or plate; Label 2 is soffit; Label 3 is upper surface; Label 4 is longitudinal fiber bar; Label 5 is transverse fiber bar.
Detailed description of the invention
Embodiment 1
As illustrated in figs. 1 and 2, the method that a kind of non-stretching type fiber prestress of the present invention applies, it comprises the following steps:
A flip beam or plate 1 are carried out reverse flip by (), namely the soffit 2 of flip beam or plate 1 upwards, and upper surface 3 downwards freely-supported is placed in a plane;
B () is by least 1/3 soffit 2 dabbing of flip beam or plate 1 and after cleaning up, form coated face, coating structure glue on above-mentioned coated face;
C () is on the flip beam being coated with structure glue or plate 1, longitudinal direction along flip beam or plate 1 lays some longitudinal fiber bars 4, the width 10-20cm of longitudinal fiber bar 4, the spacing between adjacent longitudinal fiber bar 4 is 10-20cm, then coating structure glue again on longitudinal fiber bar 4; Transverse direction along flip beam or plate 1 lays some transverse fiber bars 5, the width 10-20cm of transverse fiber bar 5, spacing between adjacent transverse ribbon 5 is 10-20cm, and transverse fiber bar 5 encases the thickness of flip beam or plate 1, then coating structure glue again on transverse fiber bar 5;
D () repeats step (c), until be coated with n layer longitudinal fiber bar 4 and the n layer transverse fiber bar 5 of design;
E () is at outer enclosure one layer concrete of flip beam or plate 1, then drying is carried out under obtained flip beam or plate 1 being placed on natural environment, after its bone dry, flip beam or plate 1 are oppositely lifted, namely the upper surface 3 of flip beam or plate 1 upwards, soffit 2 is placed in a plane downwards, and flip beam or plate 1 use in this condition.
The hot strength of longitudinal fiber bar 4 and transverse fiber bar 5 is more than 50 times of beam 1 hot strength; The modulus of elasticity of longitudinal fiber bar 4 and transverse fiber bar 5 is more than 10 times of beam 1 modulus of elasticity.Longitudinal fiber bar 4 and transverse fiber bar 5 are the combination of one or more of carbon fiber, acrylic fiber, aramid fiber or basalt fibre.Flip beam or plate 1 are concrete beam or girder steel.The cross section of flip beam or plate 1 is rectangle, T-shaped or I shape.The length of flip beam or plate 1 is at least greater than 10 meters.Such as: the length of beam 1 is at least greater than 30 meters.
Embodiment 2
As illustrated in figs. 1 and 2, the method that a kind of non-stretching type fiber prestress of the present invention applies, it comprises the following steps:
A flip beam or plate 1 are carried out reverse flip by (), namely the soffit 2 of flip beam or plate 1 upwards, and upper surface 3 downwards freely-supported is placed in a plane;
B (), from flip beam or length place, plate 1 length two ends 1/4, applies two external force on flip beam or plate 1, two external force are used for balance external load, and above-mentioned two external force are less than the yield force of this flip beam or plate 1 respectively;
C () is by least 1/3 soffit 2 dabbing of flip beam or plate 1 and after cleaning up, form coated face, coating structure glue on above-mentioned coated face;
D () is on the flip beam being coated with structure glue or plate 1, longitudinal direction along flip beam or plate 1 lays some longitudinal fiber bars 4, the width 10-20cm of longitudinal fiber bar 4, the spacing between adjacent longitudinal fiber bar 4 is 10-20cm, then coating structure glue again on longitudinal fiber bar 4; Transverse direction along flip beam or plate 1 lays some transverse fiber bars 5, the width 10-20cm of transverse fiber bar 5, spacing between adjacent transverse ribbon 5 is 10-20cm, and transverse fiber bar 5 encases the thickness of flip beam or plate 1, then coating structure glue again on transverse fiber bar 5;
E () repeats step (d), until be coated with n layer longitudinal fiber bar 4 and the n layer transverse fiber bar 5 of design;
F () is at outer enclosure one layer concrete of flip beam or plate 1, then drying is carried out under obtained flip beam or plate 1 being placed on natural environment, after its bone dry, flip beam or plate 1 are oppositely lifted, namely the upper surface 3 of flip beam or plate 1 upwards, soffit 2 is placed in a plane downwards, and flip beam or plate 1 use in this condition.
The hot strength of longitudinal fiber bar 4 and transverse fiber bar 5 is more than 50 times of beam 1 hot strength; The modulus of elasticity of longitudinal fiber bar 4 and transverse fiber bar 5 is more than 10 times of beam 1 modulus of elasticity.Longitudinal fiber bar 4 and transverse fiber bar 5 are the combination of one or more of carbon fiber, acrylic fiber, aramid fiber or basalt fibre.Flip beam or plate 1 are concrete beam or girder steel.The cross section of flip beam or plate 1 is rectangle, T-shaped or I shape.The length of flip beam or plate 1 is at least greater than 10 meters.Such as: the length of beam 1 is at least greater than 30 meters.Only for one deck in figure;
More than describing is explanation of the invention, and be not the restriction to invention, limited range of the present invention is see claim, and when without prejudice to spirit of the present invention, the present invention can do any type of amendment.
Claims (10)
1. a method for non-stretching type fiber prestress applying, it comprises the following steps:
A flip beam or plate (1) are carried out reverse flip by (), namely the soffit (2) of flip beam or plate (1) upwards, and upper surface (3) is downward and freely-supported is placed in a plane;
B () is by least 1/3 soffit (2) dabbing of flip beam or plate (1) and after cleaning up, form coated face, coating structure glue on above-mentioned coated face;
C () is on the flip beam being coated with structure glue or plate (1), longitudinal direction along flip beam or plate (1) lays some longitudinal fiber bars (4), the width 10-20cm of longitudinal fiber bar (4), spacing between adjacent longitudinal fiber bar (4) is 10-20cm, then coating structure glue again on longitudinal fiber bar (4); Transverse direction along flip beam or plate (1) lays some transverse fiber bars (5), the width 10-20cm of transverse fiber bar (5), spacing between adjacent transverse ribbon (5) is 10-20cm, transverse fiber bar (5) encases the thickness of flip beam or plate (1), then coating structure glue again on transverse fiber bar (5);
D () repeats step (c), until be coated with n layer longitudinal fiber bar (4) and n layer transverse fiber bar (5) of design;
E () is at outer enclosure one layer concrete of flip beam or plate (1), then drying is carried out under obtained flip beam or plate (1) being placed on natural environment, after its bone dry, flip beam or plate (1) are oppositely lifted, namely the upper surface (3) of flip beam or plate (1) upwards, soffit (2) is placed in a plane downwards, and flip beam or plate (1) use in this condition.
2. the method for non-stretching type fiber prestress applying as claimed in claim 2, it is characterized in that: between described step (a) and step (b), from flip beam or length place, plate (1) length two ends 1/4, to flip beam or upper applying two external force of plate (1), above-mentioned two external force are less than the yield force of this flip beam or plate (1) respectively.
3. the method for non-stretching type fiber prestress applying as claimed in claim 1 or 2, is characterized in that: the hot strength of described longitudinal fiber bar (4) and transverse fiber bar (5) is more than 50 times of flip beam or plate (1) hot strength; The modulus of elasticity of described longitudinal fiber bar (4) and transverse fiber bar (5) is more than 10 times of flip beam or plate (1) modulus of elasticity.
4. the method for non-stretching type fiber prestress applying as claimed in claim 3, is characterized in that: described longitudinal fiber bar (4) and transverse fiber bar (5) are cloth.
5. the method for non-stretching type fiber prestress applying as claimed in claim 4, is characterized in that: described n layer is 1-20 layer.
6. the method for non-stretching type fiber prestress applying as claimed in claim 5, is characterized in that: described longitudinal fiber bar (4) and transverse fiber bar (5) are carbon fiber, the combination of one or more of acrylic fiber, aramid fiber or basalt fibre.
7. the method for non-stretching type fiber prestress applying as claimed in claim 6, is characterized in that: described flip beam or plate (1) are concrete beam or girder steel.
8. the method for non-stretching type fiber prestress applying as claimed in claim 7, is characterized in that: the cross section of described flip beam or plate (1) is rectangle, T-shaped or I shape.
9. the method for non-stretching type fiber prestress applying as claimed in claim 8, is characterized in that: the length of described flip beam or plate (1) is at least greater than 10 meters.
10. the method for non-stretching type fiber prestress applying as claimed in claim 9, is characterized in that: the length of described flip beam or plate (1) is at least greater than 30 meters.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410608299.9A CN104405136B (en) | 2014-11-03 | 2014-11-03 | The method that non-stretching type fiber prestress applies |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410608299.9A CN104405136B (en) | 2014-11-03 | 2014-11-03 | The method that non-stretching type fiber prestress applies |
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| CN104405136A true CN104405136A (en) | 2015-03-11 |
| CN104405136B CN104405136B (en) | 2016-08-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025353A (en) * | 2018-08-26 | 2018-12-18 | 大连理工大学 | A kind of device and construction method of pre-stress FRP sheet material reinforcement of rc beam |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2253381A5 (en) * | 1973-12-03 | 1975-06-27 | Auxiliaire Entreprises Soc | Heat treatment acceleration of the setting of concrete - employs basally insulated electric elements in sheet form laid externally on shutters |
| CN1944915A (en) * | 2006-10-11 | 2007-04-11 | 葛培中 | Method for rein forcing concrete structure by top push type prestress carbon fibre cloth and use |
| CN103469737A (en) * | 2013-07-31 | 2013-12-25 | 尚守平 | Method for reinforcing concrete bending member by using variable-bonding prestress carbon fiber plate |
| JP2014101721A (en) * | 2012-11-21 | 2014-06-05 | Taiheiyo Material Kk | Slab structure and method of manufacturing the same |
-
2014
- 2014-11-03 CN CN201410608299.9A patent/CN104405136B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2253381A5 (en) * | 1973-12-03 | 1975-06-27 | Auxiliaire Entreprises Soc | Heat treatment acceleration of the setting of concrete - employs basally insulated electric elements in sheet form laid externally on shutters |
| CN1944915A (en) * | 2006-10-11 | 2007-04-11 | 葛培中 | Method for rein forcing concrete structure by top push type prestress carbon fibre cloth and use |
| JP2014101721A (en) * | 2012-11-21 | 2014-06-05 | Taiheiyo Material Kk | Slab structure and method of manufacturing the same |
| CN103469737A (en) * | 2013-07-31 | 2013-12-25 | 尚守平 | Method for reinforcing concrete bending member by using variable-bonding prestress carbon fiber plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025353A (en) * | 2018-08-26 | 2018-12-18 | 大连理工大学 | A kind of device and construction method of pre-stress FRP sheet material reinforcement of rc beam |
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| CN104405136B (en) | 2016-08-31 |
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