• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method of reinforcement of structural elements with high mechanical performance fabrics. Method of reinforcement of structural elements (1) with fabrics (3) of high mechanical performance comprising fixing rotating elements (2) of a turning means (2, 6) to the structural element (1), so that said element can rotate structural; gluing one end of a fabric (3) to the structural element (1); subjecting the tissue (3) to tension by tension means (4, 5, 7); coating the external surface of the structural element (1) with adhesive; rotating the structural element (1) around the axis of rotation, so that the fabric (3) is wound on the external surface of the structural element (3) and immobilize the structural element (1) to prevent it from turning in the opposite direction. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2703439A1
    申请号:ES201831250
    申请日:2018-12-20
    公开日:2019-03-08
    发明作者:Patino Alfredo Martin Luizaga；Carrillo De Albornoz Vicente Alcaraz；Del Toro Eva Maria Garcia
    申请人:Universidad Politecnica de Madrid；
    IPC主号:
    专利说明:

    [0001]
    [0002]
    [0003] Object and technical sector of the invention
    [0004]
    [0005] The invention belongs mainly, though not exclusively, to the technical construction sector.
    [0006]
    [0007] More particularly, the present invention relates to a method for reinforcing structural elements, for example and without limitation, concrete structural elements such as those frequently used, both in buildings and in civil works.
    [0008]
    [0009] BACKGROUND OF THE INVENTION
    [0010]
    [0011] In recent years, various methods have been developed to reinforce structural elements, especially structural elements of concrete, in order to alleviate the aging and / or deterioration of various structures and buildings built from these elements. Especially structures and buildings built at least 30 40 years ago, but also more recent structures, built in particularly aggressive environments, such as marine environments.
    [0012]
    [0013] Some of these known reinforcement methods contemplate the formation of screeds made with materials comprising reinforced concrete, steel sheets, and more recently, high performance materials, such as, for example, fiber reinforced plastics ("FRPs" or "Fiber Reinforced"). Plastics ", for its acronym in English),
    [0014]
    [0015] A widely used type of FRPs, are the fabrics of high mechanical performance, for example and without limitation, the carbon fiber fabrics, such as the carbon fiber fabrics marketed by the Company Resinas Castro SL, based in Porriño, Pontevedra, (Spain).
    [0016]
    [0017] The patent JPH09158495 of the year 1997 ("Earthquake resisting reinforcing engineering method for existing structure and fiber sheet used for the engineering method") and JPH09111008 of the year 1997 ("Reinforcing fiber sheet") disclose methods of reinforcement of structural elements by fabrics of carbon fiber.
    [0018] More recently, some methods of constructing structural elements using high performance mechanical fabrics have been disclosed, such as the patent KR100940550 of the year 2010 ("Reinforcing concrete structure and method using hybrid fiber Composite").
    [0019]
    [0020] Other reinforcement methods with more modern high-performance fabrics are disclosed, for example, in patent ES 2 547 464 B2 ("Method for reinforcing structural elements with fabric"), in patent US2016075061 ("Methods to increase structural performance" , strength and durability of fabric-reinforced composite materials by prestressing "), and in patent CN104695721 (" Building structure reinforcement method through self-generating reaction force ").
    [0021]
    [0022] However, in the sector there is still the need to develop new reinforcement procedures that allow a more simple application of high mechanical performance fabrics, a better use of this material and its mechanical properties, which, given the high price of The high mechanical performance fabrics would considerably reduce the costs of implementing the reinforcement method and increase its potential potential uses.
    [0023]
    [0024] Description of the invention
    [0025]
    [0026] In order to solve the problems and disadvantages described in relation to the prior art, a first object of the present invention relates to a method of reinforcing structural elements with high mechanical performance fabrics, characterized in that it comprises the following steps:
    [0027]
    [0028] a) Provide turning means provided with rotating elements;
    [0029] b) fixing the rotating elements to at least one structural element, in such a way that the turning means can rotate said structural element about an axis of rotation and according to a predetermined direction of rotation;
    [0030] c) gluing a first end of at least one fabric of high mechanical performance on the external surface of the structural element;
    [0031] d) tensioning a second end of the fabric with high mechanical properties by means of tensioning means;
    [0032] e) coating the external surface of the structural element with at least one adhesive; f) rotating the structural element about the axis of rotation in the predetermined direction of rotation, in such a way that the fabric is wound on the external surface of the structural element; and
    [0033] g) immobilizing the structural element to prevent it from turning in the opposite direction and the fabric unwinds.
    [0034]
    [0035] In a preferred embodiment of the invention, the turning means comprise rotating elements in the form of rollers that are fixed to the structural element and guides on which said rollers rest, in such a way that-when moving the rollers along the guides - the structural element rotates around the axis of rotation.
    [0036]
    [0037] The rolls are preferably cylindrical specimens, made of concrete and fixed to the structural element by a suitable adhesive, preferably epoxy resin.
    [0038]
    [0039] Likewise, it is preferable that the guides on which the rollers rest are not arranged completely horizontally, but slightly inclined (for example between 0 and 40 degrees). This specific configuration takes advantage of the gravitational force. In fact, by supporting the structural element in the upper (higher) part of the inclined guides, the weight itself said structural element makes it spontaneously tend to descend to the lower part, moving along said guides and turn during this process on itself, around the axis of rotation.
    [0040]
    [0041] However, the present invention expressly contemplates other possible alternative embodiments of the turning means, for example, turning means comprising wheel-rail systems. In said turning means, the rotating elements are the wheels that are fixed to the structural element and are subsequently placed on the rails, in such a way that-when moving the wheels along the rails-the structural element rotates on itself, around the axis of rotation.
    [0042]
    [0043] Furthermore, in another embodiment of the invention, the turning elements of the turning means comprise at least one drive shaft that is inserted in at least one bore made in the structural element and rotates said structural element rotates on itself, in around the axis of rotation.
    [0044]
    [0045] Preferably, the tensioning means act by gravity. Thus, in another preferred embodiment of the invention, the tensioning means comprise a load distribution element that it is fixed to a second end of the fabric of high mechanical performance, including -in addition- some weights that hang at different anchoring points provided in the load distribution element to subject said fabric to tension, by the action of gravity.
    [0046]
    [0047] However, the present invention expressly contemplates other possible embodiments in which the tensioning means do not act by gravity. Thus, for example, in an alternative embodiment of the present invention, the tensioning means comprise a rotating member that joins the second end of the fabric of high mechanical performance and rotates in the opposite direction to the predetermined direction of rotation of the turning means, such a way as to subject said tissue to tension.
    [0048]
    [0049] A second object of the present invention relates to a structural element reinforced with high mechanical performance fabric, according to a reinforcement method according to the first object of the invention.
    [0050]
    [0051] Below to facilitate a better understanding of this specification and forming an integral part thereof, a series of figures is attached in which, with illustrative and non-limiting character, several different embodiments of the present invention have been represented.
    [0052]
    [0053] Brief description of the Figures
    [0054]
    [0055] Figures 1 to 8 are schematic views. Each one of them shows a different stage than the method of reinforcement of structural elements with fabrics of high mechanical performance, according to the present invention.
    [0056]
    [0057] Numerical references
    [0058]
    [0059] (1) Structural element to be reinforced;
    [0060] (2) Rollers of the turning means;
    [0061] (3) High mechanical performance fabric;
    [0062] (3a) First end of the fabric with high mechanical performance;
    [0063] (3b) Second end of the fabric with high mechanical performance;
    [0064] (4) Load distribution element;
    [0065] (5) anchor points of the weights.
    [0066] (6) Guides of the means of rotation;
    [0067] (7) Weights of the tensioning means;
    [0068] (A) axis of rotation.
    [0069]
    [0070] Description of a preferred embodiment
    [0071]
    [0072] Throughout the present description, as well as in the appended figures, elements with the same or similar functions will be designated with the same reference numbers.
    [0073]
    [0074] In Figure 1 a structural element 1 is shown schematically, which is intended to be reinforced by means of the reinforcement method according to the present invention.
    [0075]
    [0076] In this particular embodiment of the invention and without this having any limiting character, the structural element 1 is a prefabricated cylindrical pillar, made of concrete.
    [0077]
    [0078] In Figure 2 schematically illustrated how, after cleaning the structural element 1, the rollers 2 are placed, which are - in this particular embodiment of the invention and without limitation - cylindrical specimens made of concrete, which are attached to the structural element 1 by means of epoxy resin. Preferably, the cylindrical specimens 2 are fixed - completely centered - to the flat faces of the structural element 1.
    [0079]
    [0080] In Figure 3 it can be seen as a first end 3a of a fabric 3 of high mechanical performance - in this particular case and without this having any limiting character - a carbon fiber fabric is glued, by means of epoxy resin, to the main surface of the structural element 1.
    [0081]
    [0082] In Figure 4 is shown-schematically-a load distribution element 4, which is - in this embodiment of the invention and without this having a limiting character - a wooden slat, joined by epoxy resin to the second end 3b of the carbon fiber fabric 3. The wooden strip 4 is also provided with anchoring points 5, which are - in this particular embodiment of the invention and without this having any limiting character - pegs.
    [0083]
    [0084] In Figure 5, schematically illustrated as - according to a possible non-limiting embodiment of the method of the present invention - two guides 6 (which in this embodiment of the invention, are two metal profiles), are arranged in parallel and with a separation greater than the length of the structural element 1, but sufficiently close to guarantee that they will bear on them the concrete specimens 2, which have been adhered to the ends of the structural element 1 to be reinforced.
    [0085]
    [0086] The metal profiles 6 are preferably at a height sufficient to allow the length of fabric 3 sufficient to completely enclose the structural element 1, plus the weights to be subsequently hung (shown in FIG. Figure 6).
    [0087]
    [0088] As already anticipated, in Figure 6 schematically illustrated as, once the batten 4 has been firmly attached to the second end 3b of the fabric 3, in each of the pins 5 (provided in said batten 4) a weight is hung 7, in such a way that the tissue 3 is tensed by the effect of the gravitational force, which acts on each of the weights 7.
    [0089]
    [0090] Thanks to said batten 4 and to the pins 5 provided therein, the gravitational loads to which the fabric 3 is subjected, due to the weights 7, are distributed along the entire surface of the second end 3b of said fabric 3. , tightening it conveniently, but without tearing it or damaging it.
    [0091]
    [0092] Subsequently, the surface of the structural element 1 to be reinforced is coated with epoxy resin and, as schematically illustrated in Figure 7, the structural element 1 is rotated on its own axis A of rotation with the help of the metal profiles 6, of such that the fabric 3 is wound around said structural element 1.
    [0093]
    [0094] In Figure 8 it is shown schematically how the fabric 3 ends up completely covering the outer surface of the structural element 1.
    [0095]
    [0096] At this point, wedges are placed between the concrete specimens 2 and the metal profiles 6, in such a way that the structural element 1 is immobilized and it is prevented that, by the effect of the weights 7, said structural element 1 can turn in the opposite direction and the fabric 3 unwinds.
    [0097]
    [0098] Finally, once the epoxy resin has hardened and the fabric 3 has been well adhered to the structural element 1, we proceed to remove the weights 7 from the wooden strip 4 and cut the excess part of the fabric 3.
    [0099] The present invention is not limited, in any way, to the embodiments disclosed herein. Other possible different embodiments of this invention will be apparent to the person skilled in the art, in view of the present disclosure. Accordingly, the scope of protection of the present invention is defined exclusively by the claims that follow.
    [0100]
    [0101] Industrial application
    [0102]
    [0103] This invention has, among others, the following industrial applications: reinforcement of structural elements for use in buildings, and in civil works, pre-fabrication of high-performance structural elements and the testing of high-performance reinforcement materials.
    权利要求:
    Claims (9)
    [1]
    1. - Method of reinforcement of structural elements (1) with fabrics (3) of high mechanical performance, characterized in that it comprises the following stages:
    a) Providing a turning means (2, 6) provided with rotating elements (2); b) fixing the rotating elements (2) to at least one structural element (1) in such a way that the turning means (2, 6) can rotate said structural element (1) around a turning axis (A) and according to a predetermined direction of rotation;
    c) gluing a first end (3a) of at least one fabric (3) of high mechanical performance on the external surface of the structural element (1);
    d) tensioning a second end (3b) of the fabric (3) with high mechanical properties by means of tensioning means (4, 5, 7);
    e) coating the external surface of the structural element (1) with at least one adhesive; f) rotating the structural element (1) around the axis of rotation in the predetermined direction of rotation, in such a way that the fabric (3) is wound on the external surface of the structural element (1); and
    g) immobilizing the structural element (1) to prevent it from turning in the opposite direction and the fabric (3) unrolling.
    [2]
    2. - Reinforcement method according to claim 1, wherein the rotation means (2, 6) comprise rollers (2) that are fixed to the structural element (1) and guides (6) on which said support rollers (2), in such a way that, when moving the rollers (2) along the guides (6), the structural element (1) rotates around the axis (A) of rotation.
    [3]
    3. - Reinforcement method according to claim 2, wherein the guides (6) on which the rollers (2) rest are arranged inclined.
    [4]
    4. - Reinforcement method according to any of claims 2 and 3, wherein the rollers (2) are cylindrical specimens made of concrete.
    [5]
    5. - Reinforcement method according to claim 4, wherein the cylindrical specimens (2) of concrete are fixed to the structural element (1) by epoxy resin.
    [6]
    6. - Reinforcement method according to claim 1, wherein the turning means (2, 6) comprise at least one drive shaft that is inserted in at least one bore made in the structural element (1) and rotates said element structural (1) around the axis (A) of rotation.
    [7]
    7. - Reinforcement method according to any of the preceding claims, wherein the tension means (4, 5, 7) comprise a load distribution element (4) that is fixed to the second end (3b) of the fabric (3) of high mechanical performance, the tensioning means also comprising some weights (7) that are hung at different anchoring points (5) provided in the load distribution element (4), to subject said fabric (3) to tension, by the action of gravity.
    [8]
    8. - Reinforcement method according to any of claims 1 to 7, wherein the tension means comprise a rotating member that joins the second end of the fabric (3) of high mechanical performance and rotates in the opposite direction to the predetermined direction of rotation of the turning means (2, 6), in such a way as to subject said tissue (3) to tension.
    [9]
    9. - Structural element (1) reinforced with a fabric (3) of high mechanical performance, according to a method of reinforcement according to any of claims 1 to 8.
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    同族专利:
    公开号 | 公开日
    ES2703439B2|2019-10-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2569612A|1941-08-14|1951-10-02|Pont A Mousson Fond|Manufacture of reinforced concrete pipes|
    US2358758A|1943-03-12|1944-09-19|New England Concrete Pipe Corp|Structural reinforced cementitious construction|
    US2614058A|1948-06-03|1952-10-14|Richard J Francis|Methods of forming reinforced hollow plastic articles|
    US5218810A|1992-02-25|1993-06-15|Hexcel Corporation|Fabric reinforced concrete columns|
    US5680739A|1994-08-01|1997-10-28|Xxsys Technologies, Inc.|Apparatus and method for reinforcing a stationary vertical column|
    JP2001040819A|1999-07-29|2001-02-13|Mitsui Constr Co Ltd|Method for reinforcing concrete structure|
    JP2008143001A|2006-12-08|2008-06-26|East Japan Railway Co|Method for reinforcing structure and fixing implement|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201831250A|ES2703439B2|2018-12-20|2018-12-20|METHOD OF REINFORCEMENT OF STRUCTURAL ELEMENTS WITH FABRICS OF HIGH MECHANICAL PERFORMANCES|ES201831250A| ES2703439B2|2018-12-20|2018-12-20|METHOD OF REINFORCEMENT OF STRUCTURAL ELEMENTS WITH FABRICS OF HIGH MECHANICAL PERFORMANCES|
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