CN104405136B - The method that non-stretching type fiber prestress applies - Google Patents
The method that non-stretching type fiber prestress applies Download PDFInfo
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- CN104405136B CN104405136B CN201410608299.9A CN201410608299A CN104405136B CN 104405136 B CN104405136 B CN 104405136B CN 201410608299 A CN201410608299 A CN 201410608299A CN 104405136 B CN104405136 B CN 104405136B
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Abstract
The present invention relates to the method that non-stretching type fiber prestress applies, flip beam or plate are carried out the lower surface of reverse flip, i.e. flip beam or plate upwards, reverse beam body is being conducted oneself with dignity or under reversed load effect, coating structure glue on the lower surface；On the flip beam being coated with structure glue or plate, the longitudinal direction along flip beam or plate lays some longitudinal fiber bars, then coating structure glue again on longitudinal fiber bar；Laterally laying some transverse fiber bars along flip beam or plate, transverse fiber bar encases the thickness of flip beam or plate, then coating structure glue again on transverse fiber bar；Until being coated with n-layer longitudinal fiber bar and the n-layer transverse fiber bar of design；Then obtained beam is placed under natural environment and is dried, after it is completely dried, flip beam or plate reversely being lifted, flip beam or plate use in this condition, the method significantly increases the structural bearing capacity of beam, overcomes original pre-stress fibre muscle anchorage problem.
Description
Technical field
The present invention relates to a kind of method that non-stretching type fiber prestress applies, particularly related to a kind of for architectural engineering
Beam on non-stretching type fiber prestress apply method.
Background technology
In the prior art, the upper surface of architectural engineering beam is under pressure, and lower surface under tension, and material is drawn
The maximal destruction ultimate value of power will be out and away less than the maximal destruction ultimate value of material under tension, and beam is in engineering practice, logical
It is all often that its lower surface is destroyed because tension is more than maximal destruction ultimate value.So increasing the pulling force of beam lower surface
Becoming the pursuit of engineers and technicians, tradition prestressing method uses anchorage and opens instrument, to structure Shi Hanzhang,
Improve structural bearing capacity；Fibrous material, as a kind of novel Materials with High Strength, has good tensile strength, is a kind of preferable
Prestressed material, but tensioning equipment and anchorage are complicated, cost-effective fruit is the poorest；The inventive method utilizes dead load or anti-
To the method for load, to beam, plate structure Shi Hanzhang, apply to provide a kind of new approach for fiber prestress muscle.
Technology contents
Present invention purpose is to provide a kind of simple and convenient method to strengthen architectural engineering beam structural initial pre stress, i.e.
A kind of method providing non-stretching type fiber prestress to apply, strengthens the bearing capacity of architectural engineering beam,.
In order to complete present invention purpose, the present invention by the following technical solutions:
The method that a kind of non-stretching type fiber prestress of the application applies, it comprises the following steps:
A flip beam or plate are carried out reverse flip by (), i.e. the lower surface of flip beam or plate is upwards, and the downward freely-supported of upper surface is placed
In a plane；
B (), by flip beam or at least 1/3 lower surface dabbing of plate and after cleaning up, forms coated face, at above-mentioned coated face
Upper coating structure glue；
C (), on the flip beam being coated with structure glue or plate, the longitudinal direction along flip beam or plate lays some longitudinal fibers
Bar, the width 10-20cm of longitudinal fiber bar, the spacing between adjacent longitudinal fiber bar is 10-20cm, then at longitudinal fibre
Coating structure glue again above dimension bar；Along flip beam or laterally some the transverse fiber bars of laying of plate, transverse fiber bar
Width 10-20cm, the spacing between adjacent transverse ribbon is 10-20cm, and transverse fiber bar encases the thickness of flip beam or plate
Degree, then coating structure glue again on transverse fiber bar；
D () repeats step (c), until being coated with n-layer longitudinal fiber bar and the n-layer transverse fiber bar of design；
E obtained flip beam or plate, at outer enclosure one layer concrete of flip beam or plate, are then placed on nature ring by ()
Be dried under border, after it is completely dried, flip beam or plate reversely lifted, i.e. the upper surface of flip beam or plate to
On, lower surface is placed on downwards in a plane, and flip beam or plate use in this condition.
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described step (a) and step (b) it
Between, away from flip beam or plate length two ends 1/4 length, on flip beam or plate, apply two external force, above-mentioned two external force
It is respectively smaller than the yield force of this flip beam or plate；
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described longitudinal fiber bar and transverse fiber
The hot strength of bar is more than 50 times of flip beam or plate stretching intensity；Described longitudinal fiber bar and the elasticity of transverse fiber bar
Modulus is more than 10 times of beam elastic modelling quantity；
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described longitudinal fiber bar and transverse fiber
Bar is fiber cloth；
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described n-layer is 1-20 layer；
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described longitudinal fiber bar and transverse fiber
Bar is the combination of one or more of carbon fiber, acrylic fiber, aramid fiber or basalt fibre；
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described flip beam or plate are beams of concrete
Or girder steel；
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: it is characterized in that: described flip beam or
The cross section of plate is rectangle, T-shaped or I shape.
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: the length of described flip beam or plate is at least
More than 10 meters.
The method that a kind of non-stretching type fiber prestress of the application applies, wherein: described flip beam or the length of plate (1)
At least above 30 meters.
The present processes, compared with the method for the lower surface of increase beam of the prior art, has the advantage that
(1) method of the present invention is to beam Shi Hanzhang, uses dead load and reversed load, is not required to tensioning equipment and anchorage,
To contignation Shi Hanzhang
(2) method using the present invention, construction is simple, carrys out Shi Hanzhang by non-Zhang Fangfa, outside balanced structure deadweight etc.
Load；
(3) present aspect method is used, the loss of customer service fiber prestress muscle anchor lower prestress；
(4) the inventive method, uses high performance fibre material as reinforcement material, adds the structural bearing capacity of beam, beam
Bending resistance significantly improves.
(5), compared with the method for the present invention is reinforced with traditional carbon fibres, by structure upset to fibrous material Shi Hanzhang, increase
Having added the structural strength of beam, the bending resistance of beam the most substantially increases, and uses construction method, to fiber cloth Shi Hanzhang,
Overcome original pre-stress fibre muscle anchorage problem.
Accompanying drawing explanation
Fig. 1 is the forward schematic diagram of the beam that the method applied with the non-stretching type fiber prestress of the present invention produces；
Fig. 2 is the bowing to schematic diagram of Fig. 1.
For the sake of clarity, in Fig. 1 and Fig. 2 only as a example by one layer of longitudinal fiber bar and one layer of transverse fiber bar.
In fig. 1 and 2, label 1 is flip beam or plate；Label 2 is lower surface；Label 3 is upper surface；Label
4 is longitudinal fiber bar；Label 5 is transverse fiber bar.
Detailed description of the invention
Embodiment 1
Method as illustrated in figs. 1 and 2, that a kind of non-stretching type fiber prestress of the present invention applies, it includes following step
Rapid:
A flip beam or plate 1 are carried out reverse flip by (), i.e. upwards, upper surface 3 is downward for the lower surface 2 of flip beam or plate 1
Freely-supported is placed in a plane；
B (), by flip beam or at least 1/3 lower surface 2 dabbing of plate 1 and after cleaning up, forms coated face, in above-mentioned painting
Coating structure glue in glue surface；
C (), on the flip beam being coated with structure glue or plate 1, the longitudinal direction along flip beam or plate 1 lays some longitudinally fibres
Dimension bar 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；Along flip beam or laterally some the transverse fiber bars 5 of laying of plate 1,
The width 10-20cm of transverse fiber bar 5, the spacing between adjacent transverse ribbon 5 is 10-20cm, transverse fiber bar 5
Encase flip beam or the thickness of plate 1, then coating structure glue again on transverse fiber bar 5；
D () repeats step (c), until being coated with n-layer longitudinal fiber bar 4 and the n-layer transverse fiber bar 5 of design；
E obtained flip beam or plate 1, at outer enclosure one layer concrete of flip beam or plate 1, are then placed on certainly by ()
So it is dried under environment, after it is completely dried, flip beam or plate 1 is reversely lifted, be i.e. flip beam or plate 1
Upwards, lower surface 2 is placed on downwards in a plane upper surface 3, 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；Longitudinal fiber
The elastic modelling quantity of bar 4 and transverse fiber bar 5 is more than 10 times of beam 1 elastic modelling quantity.Longitudinal fiber bar 4 and transverse fiber
Bar 5 is the combination of one or more of carbon fiber, acrylic fiber, aramid fiber or basalt fibre.Flip beam or plate 1 are
Beams of concrete 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 extremely
Less more than 10 meters.Such as: the length of beam 1 is at least above 30 meters.
Embodiment 2
Method as illustrated in figs. 1 and 2, that a kind of non-stretching type fiber prestress of the present invention applies, it includes following step
Rapid:
A flip beam or plate 1 are carried out reverse flip by (), i.e. upwards, upper surface 3 is downward for the lower surface 2 of flip beam or plate 1
Freely-supported is placed in a plane；
B () away from flip beam or plate 1 length two ends 1/4 length, applies two external force on flip beam or plate 1, two
External force is used for balance external load, and above-mentioned two external force is respectively smaller than this flip beam or the yield force of plate 1；
C (), by flip beam or at least 1/3 lower surface 2 dabbing of plate 1 and after cleaning up, forms coated face, in above-mentioned painting
Coating structure glue in glue surface；
D (), on the flip beam being coated with structure glue or plate 1, the longitudinal direction along flip beam or plate 1 lays some longitudinally fibres
Dimension bar 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；Along flip beam or laterally some the transverse fiber bars 5 of laying of plate 1,
The width 10-20cm of transverse fiber bar 5, the spacing between adjacent transverse ribbon 5 is 10-20cm, transverse fiber bar 5
Encase flip beam or the thickness of plate 1, then coating structure glue again on transverse fiber bar 5；
E () repeats step (d), until being coated with n-layer longitudinal fiber bar 4 and the n-layer transverse fiber bar 5 of design；
F obtained flip beam or plate 1, at outer enclosure one layer concrete of flip beam or plate 1, are then placed on certainly by ()
So it is dried under environment, after it is completely dried, flip beam or plate 1 is reversely lifted, be i.e. flip beam or plate 1
Upwards, lower surface 2 is placed on downwards in a plane upper surface 3, 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；Longitudinal fiber
The elastic modelling quantity of bar 4 and transverse fiber bar 5 is more than 10 times of beam 1 elastic modelling quantity.Longitudinal fiber bar 4 and transverse fiber
Bar 5 is the combination of one or more of carbon fiber, acrylic fiber, aramid fiber or basalt fibre.Flip beam or plate 1 are
Beams of concrete 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 extremely
Less more than 10 meters.Such as: the length of beam 1 is at least above 30 meters.In figure only as a example by one layer；
Above description is explanation of the invention, is not the restriction to invention, and limited range of the present invention sees right and wants
Asking, in the case of the spirit of the present invention, the present invention can make any type of amendment.
Claims (9)
1. the method that non-stretching type fiber prestress applies, comprises the following steps:
A flip beam or plate (1) are carried out reverse flip by (), i.e. the lower surface (2) of flip beam or plate (1) is upwards, and upper surface (3) is downwards and freely-supported is placed in a plane；
B (), by least 1/3 lower surface (2) dabbing of flip beam or plate (1) and after cleaning up, forms 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 at longitudinal fiber bar (4) coating structure glue the most again；Along flip beam or laterally some the transverse fiber bars (5) of laying of plate (1), the width 10-20cm of transverse fiber bar (5), spacing between adjacent transverse ribbon (5) is 10-20cm, transverse fiber bar (5) encases flip beam or the thickness of plate (1), then at transverse fiber bar (5) coating structure glue the most again；
D () repeats step (c), until being coated with n-layer longitudinal fiber bar (4) and n-layer transverse fiber bar (5) of design, n-layer is 1-20 layer；
E () is at outer enclosure one layer concrete of flip beam or plate (1), then obtained flip beam or plate (1) are placed under natural environment and are dried, after it is completely dried, flip beam or plate (1) are reversely lifted, i.e. the upper surface (3) of flip beam or plate (1) is upwards, lower surface (2) is placed on downwards in a plane, and flip beam or plate (1) use in this condition.
The method that non-stretching type fiber prestress the most as claimed in claim 1 applies, it is characterized in that: between described step (a) and step (b), away from flip beam or plate (1) two ends 1/4 length, to flip beam or plate (1) two external force of upper applying, above-mentioned two external force is respectively smaller than this flip beam or the yield force of plate (1).
The method that non-stretching type fiber prestress the most as claimed in claim 1 or 2 applies, it is characterised in that: the hot strength of described longitudinal fiber bar (4) and transverse fiber bar (5) is flip beam or more than 50 times of plate (1) hot strength；The elastic modelling quantity of described longitudinal fiber bar (4) and transverse fiber bar (5) is flip beam or more than 10 times of plate (1) elastic modelling quantity.
The method that non-stretching type fiber prestress the most as claimed in claim 3 applies, it is characterised in that: described longitudinal fiber bar (4) and transverse fiber bar (5) they are fiber cloth.
The method that non-stretching type fiber prestress the most as claimed in claim 4 applies, it is characterised in that: described longitudinal fiber bar (4) and the combination of one or more that transverse fiber bar (5) is carbon fiber, acrylic fiber, aramid fiber or basalt fibre.
The method that non-stretching type fiber prestress the most as claimed in claim 5 applies, it is characterised in that: described flip beam is beams of concrete or girder steel.
The method that non-stretching type fiber prestress the most as claimed in claim 1 applies, it is characterised in that: the cross section of described flip beam or plate (1) is rectangle, T-shaped or I shape.
The method that non-stretching type fiber prestress the most as claimed in claim 7 applies, it is characterised in that: the length of described flip beam or plate (1) is at least above 10 meters.
The method that non-stretching type fiber prestress the most as claimed in claim 8 applies, it is characterised in that: the length of described flip beam or plate (1) is at least above 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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| CN104405136B true CN104405136B (en) | 2016-08-31 |
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| 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 |
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