JP6428088B2 - Reinforced structure of corroded steel - Google Patents

Description

  The present invention relates to a reinforcing structure for corroded steel materials having unevenness on the surface.

  Conventionally, when repairing steel structures with bolts and nuts, even if the bolt contact surface is corroded and uneven due to long-term use, the bolt axial direction relative to the bolt For example, a bolt joint structure disclosed in Patent Document 1 has been proposed for the purpose of obtaining a tightening force and achieving an effective tightening force without generating a bending yield in the bolt.

  The bolt joint structure disclosed in Patent Document 1 is provided with a non-landing correction agent constrained by a ring-shaped restraining member between a bolt washer and a structure to be joined. A type of cement mortar, resin, or a mixture of inorganic particles or short fibers mixed therein is used.

JP 2005-308212 A

  However, the bolt joint structure disclosed in Patent Document 1 gives a predetermined tightening force to the bolt, but causes frictional resistance between the unevenness correcting agent and the bolt washer. Therefore, there is a problem that the friction bonding in the bonded structure cannot be performed, and the plate thickness of the steel material is reduced by corrosion, so that the bearing support using the bolt is also insufficient.

  In addition, the bolt joint structure disclosed in Patent Document 1 is such that an indeterminate material such as a hardened cement mortar is used as a non-land surface correcting agent, but a predetermined time is required until the cement mortar is hardened. Therefore, there is a problem that the construction time of the joining work for joining the structures to be joined becomes long, and the efficiency of the joining work is lowered.

  Therefore, the present invention has been devised in view of the above-described problems, and the object of the present invention is to improve the reliability and efficiency of the reinforcing work of the corroded steel material, and to ensure the corroded steel material. An object of the present invention is to provide a reinforcing structure for corroded steel that can be joined and reinforced.

The reinforcing structure of a corroded steel material according to the first aspect of the present invention is a reinforcing structure of corroded steel material having a non-land surface, and is a plate-like filler plate that is provided in contact with the corroded steel material and is made of metal. And a reinforcing plate provided in contact with the filler plate, the filler plate contacting the reinforcing plate with an uneven surface formed in a substantially uneven shape on one surface in contact with the corroded steel material. The other surface to be contacted is formed by using a layered modeling method or a cutting modeling method so as to have a flat surface formed in a substantially flat shape. The uneven shape formed on the surface of the corroded steel material is scanned with a displacement meter, and is formed in a substantially uneven shape in accordance with the uneven shape formed on the surface of the corroded steel material.

  According to a second aspect of the present invention, there is provided the reinforcing structure for corroded steel material according to the first invention, wherein the filler plate penetrates from one surface in contact with the corroded steel material to the other surface in contact with the reinforcing plate. Is formed by using a layered modeling method or a cutting modeling method so as to be formed.

  According to a third aspect of the present invention, there is provided the reinforcing structure for a corroded steel material according to the second invention, wherein the filler plate is in contact with the corroded steel material at one surface where the uneven surface is formed, and the bolt insertion hole is formed. According to the method, the corroded steel material is drilled and penetrated to form a through hole in the corroded steel material.

  According to a fourth aspect of the present invention, there is provided the reinforcing structure for a corroded steel material according to any one of the first to third aspects, wherein the filler plate is provided with the filler plate divided into a plurality of small pieces with respect to one reinforcing plate. It is characterized by being formed by being divided into a plurality of small pieces by using a layered modeling method or a cutting modeling method.

  According to a fifth aspect of the present invention, there is provided the reinforcing structure for corroded steel material according to any one of the first to fourth aspects, wherein the filler plate is made of aluminum.

  The reinforcing structure for a corroded steel material according to a sixth aspect of the present invention is the reinforcing plate according to any one of the first to fifth aspects, wherein the reinforcing plate surrounds the filler plate provided between the corroding steel material. A water stop material is provided along the outer periphery of the.

  According to the first to sixth inventions, since the uneven surface of the filler plate is meshed with the unevenness of the corroded steel material, the mounting operation of the filler plate to the corroded steel material becomes accurate, and the reinforcing plate and the filler plate Is fixed to the corroded steel with bolts, making it easy to attach the reinforcing plate and filler plate to the corroded steel, and improving the reliability and efficiency of the reinforcing work of the corroded steel with the reinforcing plate. Become.

  According to the first to sixth inventions, the friction coefficient between one surface of the filler plate and the surface of the corroded steel material is increased while the overall plate thickness is increased by providing the corroded steel material with the reinforcing plate. In addition, the other surface of the filler plate and the reinforcing plate are firmly friction-bonded, and the corroded steel material can be reliably bonded and reinforced with the reinforcing plate.

  According to 1st invention-6th invention, since a filler plate is shape | molded by the layered shaping | molding method or the cutting shaping | molding method, although irregular irregularity will be formed in the surface of a corrosion steel material, The surface of the corroded steel surface can be accurately scanned with a displacement meter and the filler plate can be easily output by a 3D printer, etc. It can be formed easily and accurately according to the shape of the uneven surface.

  In particular, according to the second and third inventions, a drilling tool such as a drill is used in accordance with the position of the bolt insertion hole of the filler plate in a state where the uneven surface of the filler plate is meshed with the unevenness of the corroded steel material. Since the through hole is formed by drilling the corroded steel, the drilling work of the corroded steel can be easily performed while accurately aligning the bolt insertion hole of the filler plate and the through hole of the corroded steel. It becomes possible.

  In particular, according to the fourth invention, by dividing the filler plate into a plurality of small pieces, the size of each small piece is reduced, the accuracy when molding each small piece is improved, and the conveyance of each small piece is performed. In addition, handling in the mounting operation is facilitated, and the manageability of the filler plate can be improved.

  In particular, according to the fifth invention, the main material of the reinforcing plate is steel, and the main material of the filler plate is aluminum, so that the contact surface of the reinforcing plate and the flat surface of the filler plate are bolts. By improving the strength of aluminum by restraint by the reinforcing plate while improving the adhesion with the steel reinforcing plate by plastic deformation of aluminum in the state of being crimped by, the friction coefficient is significantly increased, It becomes possible to improve the joining strength by friction joining between the other surface of the filler plate and the reinforcing plate.

  In particular, according to the sixth aspect of the present invention, the filler plate and the reinforcing plate are arranged so as to surround the filler plate, that is, the filler plate does not jump out of the reinforcing plate, and then put along the outer periphery of the reinforcing plate. By providing a water-stopping material, etc., water from the outside does not enter the gap formed by the filler plate provided between the corroded steel material and the reinforcing plate. It is possible to prevent corrosion due to the above, and maintain the state in which the corroded steel material is joined and reinforced with the reinforcing plate via the filler plate for a long period of time.

It is a perspective view which shows the bridge girder of the bridge in which the reinforcement structure of the corrosion steel material to which this invention is applied is used. It is a top view which shows the corrosion steel material in which the reinforcement structure of the corrosion steel material to which this invention is applied is used. It is a top view which shows the reinforcement structure of the corrosion steel materials to which this invention is applied. (A) is a front view which shows the filler plate of the reinforcement structure of the corrosion steel materials to which this invention is applied, (b) is the top view. It is a front view which shows the state in which the filler plate divided | segmented into the several small piece with respect to one reinforcement board was provided with the reinforcement structure of the corrosion steel materials to which this invention is applied. It is a front view which shows the state by which one filler plate was provided with respect to one reinforcement board by the reinforcement structure of the corrosion steel material to which this invention is applied. It is a top view which shows the through-hole of the corrosion steel material formed according to the position of the bolt insertion hole of a filler plate in the reinforcement structure of the corrosion steel material to which this invention is applied. It is a top view which shows the uneven | corrugated surface and flat surface of a filler plate in the reinforcement structure of the corrosion steel material to which this invention is applied. It is a front view which shows the water stop material provided so that a filler plate may be surrounded in the reinforcement structure of the corrosion steel material to which this invention is applied. It is a top view which shows the friction surface formed by abutting the flat surface of a filler plate, and the contact surface of a reinforcement board in the reinforcement structure of the corrosion steel material to which this invention is applied. (A) is a top view which shows the reinforcement board weld-joined to the conventional corrosion steel materials, (b) is a top view which shows the reinforcement board jointly bonded to the conventional corrosion steel materials. It is a top view which shows the filler plate and reinforcement board which are provided in the joining location of corrosion steel materials in the reinforcement structure of corrosion steel materials to which this invention is applied. It is a front view which shows the filler plate, the reinforcement board, and the water stop material which are provided in the joining location of a corrosion steel material in the reinforcement structure of the corrosion steel material to which this invention is applied. It is a top view which shows the one-side corrosion steel material in which the reinforcement structure of the corrosion steel material to which this invention is applied is used.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the reinforcement structure 1 of the corrosion steel material to which this invention is applied is demonstrated in detail, referring drawings.

  The corroded steel reinforcing structure 1 to which the present invention is applied is mainly provided in existing steel materials constituting bridge girders of bridges, conveyor frames of belt conveyors, etc., and is used for a long time as shown in FIG. It is used to reinforce the corroded steel 8 that has been rusted and corroded by salt damage or the like.

  As shown in FIG. 2, the corroded steel 8 is made of a steel material used as a structural member constituting the bridge girder of the bridge, and as shown in FIG. The plate thickness t after corrosion becomes irregularly thin at each portion R of the surface 8a of the steel material.

  The corroded steel material 8 has a portion R1 that becomes a relatively thin plate thickness t1 by being thicker than the plate thickness t0 before the corrosion of the steel material after the corrosion of the steel material, or a plate thickness t0 before the corrosion of the steel material. A portion R2 having a relatively thick plate thickness t2 is formed by decreasing the degree of thinning.

  The corroded steel material 8 is formed by forming a portion R1 having a relatively thin plate thickness t1 and a portion R2 having a relatively thick plate thickness t2 into irregular irregularities on the surface 8a of the steel material. The plate thickness t after the corrosion is made thinner overall than the plate thickness t0 before the corrosion, and the unevenness 80 is formed on the surface 8a of the steel material.

  As shown in FIG. 3, the reinforcing structure 1 for corroded steel material to which the present invention is applied is applied to the filler plate 2 provided in contact with the corroded steel material 8 having the surface 8 a formed with the uneven surface 80, and the filler plate 2. And a reinforcing plate 5 provided in contact therewith.

  The filler plate 2 is made of a metal such as aluminum or iron, and by using a layered modeling method using a 3D printer or a cutting modeling method using a 3D plotter, a metal such as aluminum or iron is used as a material. It is formed by a three-dimensional modeling method.

  In the filler plate 2, one surface 3 that comes into contact with the corroded steel material 8 and the other surface 4 that comes into contact with the reinforcing plate 5 are integrally formed. The filler plate 2 was formed in a substantially flat shape with a concavo-convex surface 30 formed in a substantially concavo-convex shape on one surface 3 in contact with the corroded steel material 8 and a second surface 4 in contact with the reinforcing plate 5. And a flat surface 40.

  As shown in FIG. 4, for example, the filler plate 2 is formed in a substantially rectangular shape when viewed from the front. The filler plate 2 has a substantially rectangular shape having a long side and a short side of a predetermined dimension, or has substantially the same length. It is formed in a substantially square shape having four sides. The filler plate 2 is formed with a bolt insertion hole 21 penetrating from one surface 3 to the other surface 4 with a predetermined inner diameter d.

  As shown in FIG. 5, the filler plate 2 is provided with a filler plate 2 that is divided into a plurality of small pieces 20 with respect to one reinforcing plate 5. The filler plate 2 is formed in a substantially rectangular shape in which each of the plurality of small pieces 20 has a long side and a short side of about 10 cm to 30 cm or a substantially square shape having four sides of about 10 cm to 30 cm and substantially the same length. The The filler plate 2 is formed such that each of the plurality of adjacent small pieces 20 is arranged in a state of being in contact with or separated from each other.

  In the filler plate 2, each of the plurality of small pieces 20 is formed with one bolt insertion hole 21 at a substantially center or the like in a front view. The filler plate 2 is not limited to this, and a plurality of bolt insertion holes 21 may be formed in each of the plurality of small pieces 20, and only one partial piece 20 of the plurality of small pieces 20 may be used. Alternatively, a plurality of bolt insertion holes 21 may be formed.

  The filler plate 2 may be provided with one filler plate 2 for one reinforcing plate 5 as shown in FIG. 6 without being divided into a plurality of small pieces 20. In the filler plate 2, when one filler plate 2 is provided for one reinforcing plate 5, one or a plurality of bolt insertion holes 21 are formed at the side or corner of the filler plate 2. Will be.

  As shown in FIG. 7, the filler plate 2 is temporarily fixed to the surface 8 a of the corroded steel material 8 with an adhesive or the like with the one surface 3 on which the uneven surface 30 is formed in contact with the corroded steel material 8. The filler plate 2 is temporarily fixed to the surface 8a of the corroded steel material 8, and the corroded steel material 8 is drilled and penetrated by a drilling tool 6 such as a drill in accordance with the position where the bolt insertion hole 21 is formed. Thus, the through hole 81 is formed in the corroded steel material 8 at a position substantially the same as the position where the bolt insertion hole 21 is formed.

  The filler plate 2 has an uneven surface 30 and a flat surface 40, and a layered modeling method such as a laser layered modeling method or a powder layered modeling method, or a cutting model so that the bolt insertion hole 21 is formed. The method is used for molding, and is divided into a plurality of small pieces 20 as necessary.

  Here, the laser additive manufacturing method is an additive manufacturing method in which a metal powder such as aluminum or iron is irradiated with a laser so that the metal powder is dissolved and solidified to be laminated in multiple layers. The powder additive manufacturing method is an additive manufacturing method in which a metal material such as aluminum or iron and a binder are liquefied and sprayed so as to be laminated in multiple layers. Further, the cutting modeling method is to cut a block of aluminum, iron or the like into a predetermined shape.

  As shown in FIG. 8, the uneven surface 30 is irregularly formed on the surface 8 a of the corroded steel 8 by scanning the shape of the uneven surface 80 formed by corrosion on the surface 8 a of the corroded steel 8 with the displacement meter 7. In accordance with the shape of the uneven surface 80, it is formed in a substantially uneven shape. Here, for example, the shape measurement of the uneven land 80 can be performed using a portable three-dimensional laser displacement meter (REVscan manufactured by Creaform) or the like.

  In addition, the shape measurement of the non-land 80 of the corroded member may be carried out directly by bringing the displacement meter 7 such as a laser displacement meter into the field, or once corroded with a dental impression material or plaster at the field. The surface of the surface unevenness 80 may be taken, and the shape of the shape may be measured with the displacement meter 7 indoors.

  The uneven surface 30 is formed by irradiating the surface 8a of the corroded steel material 8 with a laser from the displacement meter 7, so that, for example, in the case of REVscan, the space of the non-land 80 on the surface 8a of the corroded steel material 8 in a unit of about 0.01 mm. Position information is acquired and output from a 3D printer or the like based on the spatial position information acquired by the displacement meter 7.

  The concavo-convex surface 30 is a portion Q1 that is in contact with a portion R1 that has a relatively thin plate thickness t1 of the corroded steel material 8, and the filler plate 2 has a relatively thick plate thickness t3. Is output from a 3D printer or the like so that the filler plate 2 has a relatively thin plate thickness t4 at the portion Q2 that is in contact with the portion R2 having a thick plate thickness t2. The

  The flat surface 40 includes the total thickness t1 + t3 of the thin plate thickness t1 of the portion R1 of the corroded steel material 8 and the thick plate thickness t3 of the portion Q1 of the filler plate 2, and the thick plate thickness t2 and the filler plate of the portion R2 of the corroded steel material 8. The total plate thickness t2 + t4 of the thin plate thickness t4 of the second portion Q2 is, for example, approximately flat so that it is approximately the same size of about 25 mm. There is no particular requirement for the dimension of the thickness t4 of the thin portion Q2 of the filler plate 2, but by setting t4 ≧ 1 mm, accidental breakage of the filler plate 2 can be prevented and workability can be improved.

  The reinforcing plate 5 is made of steel or the like, is formed in a substantially rectangular shape when viewed from the front, and comes into contact with the other surface 4 of the filler plate 2 as shown in FIG. Is formed in a substantially flat shape. The reinforcing plate 5 is formed with a through hole 51 penetrating to the contact surface 5a at a position substantially the same as the position where the bolt insertion hole 21 of the filler plate 2 and the through hole 81 of the corroded steel material 8 are formed.

  The reinforcing plate 5 sandwiches the filler plate 2 with the corroded steel material 8 and overlaps the through hole 51 of the reinforcing plate 5, the bolt insertion hole 21 of the filler plate 2, and the through hole 81 of the corroded steel material 8, By fastening the nut 61 to the bolt 60 inserted through these, the filler plate 2 and the corroded steel material 8 are fixed to the surface 8a.

  As shown in FIG. 9, the reinforcing plate 5 surrounds the filler plate 2 provided between the corroded steel material 8, and putty made of an impermeable resin or the like, or a water-stopping material such as rubber. 50 is provided. The reinforcing plate 5 has a water stop material 50 along the outer periphery 5b of the reinforcing plate 5 so that water from the outside does not enter the gap between the reinforcing steel plate 8 and the corroded steel material 8 formed by providing the filler plate 2. Provided.

  When the filler plate 2 divided into a plurality of small pieces 20 is provided, the reinforcing plate 5 surrounds the plurality of small pieces 20 in a state where each of the plurality of small pieces 20 is arranged in contact with or apart from each other. The water stop material 50 is provided so as to block the water channel. The reinforcing plate 5 is not limited to this, and the water stop material 50 may be provided so as to surround each of the plurality of small pieces 20 and close the water channel.

  As shown in FIG. 10, the reinforcing structure 1 for a corroded steel material to which the present invention is applied causes the one surface 3 of the filler plate 2 to abut the surface 8 a of the corroded steel material 8 and the other surface 4 of the filler plate 2. By contacting the contact surface 5 a of the reinforcing plate 5, the filler plate 2 and the reinforcing plate 5 are fixed to the corroded steel material 8 in a state where the filler plate 2 is sandwiched between the corroded steel material 8 and the reinforcing plate 5. The

  At this time, in the corrosion steel material reinforcing structure 1 to which the present invention is applied, the shape of the uneven surface 30 on one surface 3 of the filler plate 2 substantially matches the shape of the uneven surface 80 on the surface 8a of the corrosion steel material 8. The uneven surface 30 of the filler plate 2 is engaged with the uneven surface 80 of the corroded steel material 8, and one surface 3 of the filler plate 2 is brought into contact with the surface 8 a of the corroded steel material 8.

  Further, the corroded steel material reinforcing structure 1 to which the present invention is applied includes a substantially flat flat surface 40 formed on the other surface 4 of the filler plate 2 and a substantially flat contact surface 5a of the reinforcing plate 5. The friction surface S is formed by abutting. The reinforcing structure 1 of the corroded steel material to which the present invention is applied is such that the reinforcing plate 5 corrodes in a state where the flat surface 40 of the filler plate 2 and the contact surface 5a of the reinforcing plate 5 are brought into contact with each other to form the friction surface S. By being fixed to the steel material 8, the filler plate 2 and the reinforcing plate 5 are friction-joined.

  On the other hand, as shown in FIG. 11 (a), the conventional bonded structure 9 for corroded steel is such that the reinforcing plate 90 is welded to the corroded steel 8 at the weld location W, or FIG. ), The reinforcing plate 90 is pressure-bonded to the corroded steel material 8 with bolts 91.

  At this time, when the reinforcing plate 90 is welded and joined to the corroded steel material 8, the conventional corroded steel joint structure 9 has the unevenness 80 formed on the surface 8 a of the corroded steel material 8. In addition, it is difficult to perform highly accurate welding. A large gap often occurs between the reinforcing plate 90 and the uneven surface 80, and hot cracking tends to occur in the weld metal when the gap is to be filled with the weld metal. In addition, in the case of an old structure where corrosion is a problem, the old steel material used in the structure may have a high content of components such as phosphorus and sulfur that easily cause cold cracking in welding. Furthermore, when performing a welding operation when the bridge vibrates due to the passage of a vehicle or the like, a weld crack or the like occurs at the welding point W, and the reliability of the weld joint is significantly reduced.

  Further, in the conventional bonded structure 9 of the corroded steel material, when the reinforcing plate 90 is pressure-supported to the corroded steel material 8, the plate thickness t9 of the corroded steel material 8 is thinned by the corrosion, so that the bolt 91 is supported. Therefore, a sufficient bearing area cannot be ensured, and a necessary joint strength cannot be obtained in a design. Of course, the friction bonding cannot be designed because the contact area between the reinforcing plate 90 and the corroded steel material 8 cannot be calculated due to the irregular land 80.

  As shown in FIG. 10, the reinforcing structure 1 of the corroded steel material to which the present invention is applied is such that the uneven surface 30 of the filler plate 2 meshes with the uneven surface 80 of the corroded steel material 8, so that the surface 8 a of the corroded steel material 8 and the filler The friction coefficient with the one surface 3 of the plate 2 becomes very high, and the filler plate 2 and the reinforcing plate 5 are firmly joined by the friction surface S.

  At this time, the corroded steel material reinforcing structure 1 to which the present invention is applied is that even when the corroded steel material 8 is rusted and corroded, the thickness t of the corroded steel material 8 is entirely reduced. By providing the reinforcing plate 5 on both sides or one side, the overall plate thickness is increased, and the corroded steel material 8 can be reinforced by the reinforcing plate 5.

  As shown in FIG. 3, the corroded steel material reinforcing structure 1 to which the present invention is applied has the uneven surface 30 of the filler plate 2 meshed with the uneven surface 80 of the corroded steel material 8. The mounting operation becomes accurate, and the reinforcing plate 5 and the filler plate 2 are fixed to the corroded steel material 8 by the bolts 60. Therefore, the mounting operation of the reinforcing plate 5 and the filler plate 2 to the corroded steel material 8 becomes simple. It is possible to improve the reliability and efficiency of the reinforcing work of the corroded steel material 8 by the reinforcing plate 5.

  Further, the corroded steel material reinforcing structure 1 to which the present invention is applied is that the corroded steel material 8 is provided with the reinforcing plate 5 to increase the overall plate thickness, while the one surface 3 of the filler plate 2 and the corroded steel material. 8, the friction coefficient with the surface 8 a of the filler plate 2 is increased, and the other surface 4 of the filler plate 2 and the reinforcing plate 5 are firmly friction-bonded, and the corroded steel material 8 is reliably bonded and reinforced with the reinforcing plate 5. It becomes possible.

  As shown in FIG. 7, the reinforcing structure 1 for a corroded steel material to which the present invention is applied has a bolt insertion hole 21 in the filler plate 2 in a state where the uneven surface 30 of the filler plate 2 is engaged with the uneven surface 80 of the corroded steel material 8. Since the through hole 81 is formed by drilling the corroded steel material 8 with the drilling tool 6 such as a drill in accordance with the position of the above, the bolt insertion hole 21 of the filler plate 2 and the through hole 81 of the corroded steel material 8 are formed. It is possible to easily carry out the drilling work of the corroded steel material 8 while making the alignment accurate.

  As shown in FIG. 8, the reinforcing structure 1 for a corroded steel material to which the present invention is applied has an irregular irregularity on the surface 8 a of the corroded steel material 8 because the filler plate 2 is formed by a layered modeling method or a cutting modeling method. Although the land 80 is formed, the shape of the uneven surface 80 of the surface 8a of the corroded steel material 8 is accurately scanned with the displacement meter 7, and the filler plate 2 is easily output by a 3D printer or the like. Thus, the shape of the uneven surface 30 of the filler plate 2 can be easily and accurately formed according to the shape of the uneven surface 80 of the surface 8a of the corroded steel material 8.

  In particular, the reinforcing structure 1 for a corroded steel material to which the present invention is applied is formed by cutting a block of aluminum, iron or the like as in the cutting modeling method by forming the filler plate 2 by a layered modeling method. Therefore, it is possible to reduce the material cost required for forming the filler plate 2 without increasing the amount of use of a metal material such as aluminum or iron more than necessary.

  The corroded steel material reinforcing structure 1 to which the present invention is applied has the part Q2 that is in contact with the part R2 of the thick steel plate 8 having a thick plate thickness t2 because the filler plate 2 is formed by the layered modeling method or the cutting modeling method. Thus, the thin plate thickness t4 of the filler plate 2 can be set to any size. For example, by setting the thin plate thickness t4 at the portion Q2 of the filler plate 2 to 1 mm or more, the filler plate 2 It becomes possible to facilitate the handling in the transportation and installation work.

  In particular, the reinforcing structure 1 for corroded steel material to which the present invention is applied has a reinforcing material as a main material of the reinforcing plate 5 and a main material of the filler plate 2 as shown in FIG. While the abutting surface 5a of the plate 5 and the flat surface 40 of the filler plate 2 are crimped by bolts and nuts, the aluminum is plastically deformed to improve the adhesion between the reinforcing plate 5 and the reinforcing plate 5. By improving the strength of the aluminum of the filler plate 2 due to the restraint by, the friction coefficient is remarkably increased, and the joining strength by the frictional joining between the other surface 4 of the filler plate 2 and the reinforcing plate 5 can be improved. It becomes possible. At this time, the friction coefficient of the joint surface between the steel material and the steel material is basically set to 0.4, whereas the friction coefficient of the joint surface between the aluminum material and the steel material can be designed to be 0.7.

  As shown in FIG. 9, the reinforcing structure 1 for corroded steel material to which the present invention is applied surrounds the filler plate 2, that is, the filler plate 2 and the reinforcement so that the filler plate 2 does not jump out of the reinforcing plate 5. After the plate 5 is disposed, the filler plate 2 is provided between the corroded steel material 8 and the reinforcing plate 5 by forming a water stop material 50 such as a putty along the outer periphery 5b of the reinforcing plate 5. Since the water from the outside does not enter the gap, the corrosion due to the water immersion from the filler plate 2 is prevented, and the corroded steel material 8 is joined and reinforced by the reinforcing plate 5 through the filler plate 2. It can be maintained for a long time.

  The corroded steel material reinforcing structure 1 to which the present invention is applied is such that the filler plate 2 is sandwiched between the corroded steel material 8 and the reinforcing plate 5 so that the filler plate is divided into a plurality of small pieces 20 as shown in FIG. Even if 2 is provided, one reinforcing plate 5 can be continuously frictionally joined to the filler plate 2 divided into a plurality of small pieces 20.

  Thereby, the reinforcement structure 1 of the corroded steel material to which the present invention is applied is obtained by dividing the filler plate 2 into a plurality of small pieces 20, thereby reducing the size of each small piece 20 and forming each small piece 20. While improving accuracy, handling in each small piece 20 in carrying and attachment work is facilitated, and manageability of the filler plate 2 can be improved.

  As shown in FIG. 12, the reinforcing structure 1 for corroded steel material to which the present invention is applied is a joint J where the ends of steel materials constituting a bridge girder of a bridge are joined, and a reinforcing plate 5 is used as an attachment plate. Also good. At this time, the reinforcing structure 1 of the corroded steel material to which the present invention is applied removes the existing attachment plate provided at the joining point J in a state where the end portions of the corroded steel material 8 facing each other are temporarily held by bypass. In addition, the filler plate 2 is provided at each of the end portions of the corroded steel material 8 facing each other, and the reinforcing plate 5 is provided on the end portions of the corroded steel material 8 facing each other, whereby the end of the corroded steel material 8 facing each other is provided. The reinforcing plate 5 is friction bonded at the portion.

  Thereby, the reinforcement structure 1 of the corrosion steel material to which the present invention is applied is reinforced while the corrosion steel material 8 such as the structural member is reinforced by the reinforcing plate 5 at the joint portion J of the structural member constituting the bridge girder of the bridge. By using the plate 5 as an attachment plate, the end portions of the corroded steel material 8 facing each other can be strongly friction-bonded, and the corroded steel material 8 is reliably joined and reinforced by the reinforcing plate 5 at the joint J. It becomes possible.

  As shown in FIG. 13, the reinforcing structure 1 for corroded steel material to which the present invention is applied is installed at the end portions of the corroded steel material 8 facing each other at the joint J where the end portions of the steel materials constituting the bridge girder of the bridge are joined. When the reinforcing plate 5 is provided, a water stop material 50 such as a putty is continuously provided on both sides of the corroded steel material 8 at the thickened portion 50a so as to fill a gap between the ends of the corroded steel material 8 facing each other. It will be provided.

  Thereby, the reinforcement structure 1 of the corroded steel material to which the present invention is applied is provided with the water stop material 50 such as putty in the thick spot 50a so as to fill the gap between the end portions of the corroded steel material 8 facing each other. Water from the outside does not enter the gaps between the end portions of the corroded steel material 8 facing each other, and corrosion due to water immersion of the filler plate 2 made of aluminum or the like is prevented, and the corroded steel material 8 is passed through the filler plate 2. However, it is possible to maintain the state of being joined and reinforced by the reinforcing plate 5 for a long period of time.

  Note that the condition of corrosion damage is greatly influenced by the condition of water splashing. Therefore, as shown in FIG. 14, the reinforcing structure 1 for corroded steel material to which the present invention is applied often needs to be used for a one-side corroded steel material 82 in which unevenness 80 occurs due to corrosion thinning only on one side. . For such a one-side corroded steel material 82, it is sufficient to use the filler plate 2 only on one side.

  As mentioned above, although the example of embodiment of this invention was demonstrated in detail, all the embodiment mentioned above showed only the example of actualization in implementing this invention, and these are the technical aspects of this invention. The range should not be construed as limiting.

1: Reinforced structure of corroded steel material 2: Filler plate 20: Small piece 21: Bolt insertion hole 3: One surface 30: Concavity and convexity surface 4: The other surface 40: Flat surface 5: Reinforcement plate 5a: Contact surface 5b: Reinforcement plate Outer periphery 50: Water stop material 50a: Thick spot 51: Through hole 6: Drilling tool 60: Bolt 61: Nut 7: Displacement meter 8: Corrosion steel 8a: Surface 80: Non-land surface 81: Through hole 82: One side corrosion Steel

Claims (6)

It is a reinforced structure of corroded steel with unevenness on the surface,
A plate-like filler plate that is provided in contact with the corroded steel material and made of metal, and a reinforcing plate that is provided in contact with the filler plate,
The filler plate has an uneven surface formed in a substantially uneven shape on one surface abutting against the corroded steel material, and a flat surface formed in a substantially flat shape on the other surface in contact with the reinforcing plate. It is formed by using a layered modeling method or a cutting modeling method so as to have
The uneven surface is formed in a substantially uneven shape in accordance with the uneven shape formed on the surface of the corroded steel by scanning the uneven shape formed on the surface of the corroded steel with a displacement meter. Reinforced structure of corroded steel. The filler plate has a layered manufacturing method or a cutting method so that a bolt insertion hole penetrating from one surface abutting against the corrosion steel material to the other surface abutting against the reinforcing plate is formed. The reinforcing structure for a corroded steel material according to claim 1, wherein the reinforcing structure is formed by using a modeling method. The filler plate has one surface on which the uneven surface is formed in contact with the corroded steel material, and the corroded steel material is drilled and penetrated in accordance with the position where the bolt insertion hole is formed, thereby corroding the steel material. The reinforcing structure for corroded steel material according to claim 2, wherein a through hole is formed in the corroded steel material. The filler plate is formed into a plurality of small pieces by using a layered modeling method or a cutting modeling method so that the filler plate divided into a plurality of small pieces with respect to one reinforcing plate is provided. The reinforcing structure for a corroded steel material according to any one of claims 1 to 3, wherein the reinforcing structure is formed by dividing. The reinforcing structure for a corroded steel material according to any one of claims 1 to 4, wherein the filler plate is made of aluminum. The said reinforcement board surrounds the said filler plate provided between corrosion steel materials, and a water stop material is provided along the outer periphery of the said reinforcement board, The any one of Claims 1-5 characterized by the above-mentioned. The reinforcing structure of the corroded steel material according to 1.

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