JP6284287B1 - Seismic reinforcement structure for structures consisting of H-shaped steel columns and H-shaped steel beams - Google Patents

Abstract

An object of the present invention is to provide an H-shaped steel column, an H-shaped steel beam, and a seismic reinforcing structure at the intersection of the H-shaped steel column capable of improving the seismic performance while minimizing the seismic reinforcing space with a simple structure. An engaging portion that engages with an end of a flange is formed at both ends of a central portion that is fitted between a flange of an H-shaped steel column and an H-shaped steel beam, and a tie rod is positioned at a position corresponding to a tie rod insertion hole formed in a web. A position corresponding to a mold member that is formed in the longitudinal direction and the lateral direction, a tie rod insertion hole that is laminated on the outside of the mold member and formed on the web, and a tie rod insertion hole that is formed in the mold member. Reinforcement plate in which tie rod insertion holes are formed, tie rods in which male screws are formed at both ends to be inserted into the tie rod insertion holes formed in the reinforcement plate, the formwork member, and the web, and the intersection of the H-shaped steel column and the H-shaped steel column Surrounded by L-shaped connecting reinforcement members that connect H-shaped steel columns and H-shaped steel beams via connecting bolts, H-shaped steel columns, H-shaped steel beams, and formwork members, arranged at a plurality of orthogonal corners Solidified material that fills the space It is characterized by. [Selection] Figure 8

Description

The present invention relates to a seismic reinforcement structure for a structure including an H- shaped steel column and an H-shaped steel beam.

Conventionally, in order to seismic retrofitting an existing H-section steel column, enclosed in steel enclosure around the H-shaped steel columns, and Haisuji a reinforcement in the space between the H-beam pillars and enclosure steel sheet, the H-beam pillars A seismic reinforcement structure for an H-shaped steel column has been proposed in which a space between enclosing steel plates is filled with a solidifying material such as grout and solidified.

JP2015-203199A

Seismic reinforcement structure of a conventional H-shaped steel pillar, since it is sure to surround steel encloses the entire circumference of the H-beam pillars are sufficient reinforcing space required. However, there are many cases where a structure such as a wall is adjacent to an existing H- shaped steel column, or a structure such as a wall is connected in series, and the entire circumference of the H- shaped steel column is surrounded by a steel plate. There was a problem that the space to be enclosed could not be secured, and a reinforcing structure at the intersection of the H-shaped steel column and the H-shaped steel beam was not studied.

The present invention provides an H- shaped steel column, an H-shaped steel beam, and an earthquake-resistant reinforcing structure at the intersection of the H- shaped steel column capable of improving the seismic performance with a simple structure that solves the problems of the prior art and minimizing the seismic reinforcement space. The purpose is to provide.

In order to solve the above-mentioned problem, the seismic reinforcement structure for a structure composed of an H- shaped steel column and an H-shaped steel beam according to the present invention is provided at both ends of the central portion to be fitted between the flanges of the H- shaped steel column and the H-shaped steel beam. A mold member that forms an engaging portion that engages with the flange end, forms a tie rod insertion hole at a position corresponding to the tie rod insertion hole formed in the web, and is continuously provided in the vertical and horizontal directions, and the mold A continuous fiber sheet disposed on the outer surface of the member and the outer surface of the H-shaped steel column and the flange of the H-shaped steel beam, and a tie rod insertion hole formed on the web laminated on the outside of the formwork member on which the continuous fiber sheet is disposed; Reinforcing plate in which tie rod insertion holes are formed at positions corresponding to tie rod insertion holes formed in the mold member, and tie rods in which male screws are formed at both ends inserted into the tie rod insertion holes formed in the reinforcing plate, the mold member, and the web. H-shaped steel column and H Is arranged continuous fiber sheet to the flange of the steel beam, the reinforcing plate is arranged reinforced continuous fiber sheets and H-section steel column through a connecting bolt arranged on the reinforcing plate of the plurality of corner portions orthogonal intersections And an L-shaped connection reinforcing member connected to the H-shaped steel beam , and an H- shaped steel column, and a solidified material filled in a space surrounded by the H-shaped steel beam and the formwork member.

  Moreover, the seismic reinforcement structure of the structure consisting of an H-shaped steel column and an H-shaped steel beam according to the present invention is characterized in that a pair of parallel L-shaped connecting reinforcing members are connected by connecting long bolts.

Moreover, the seismic reinforcement structure of the structure consisting of the H- shaped steel column and the H-shaped steel beam according to the present invention seismically reinforces both sides of the H- shaped steel column, the web of the H-shaped steel beam, or only one side of the web. It is characterized by that.

  In addition, the seismic reinforcement structure for a structure comprising an H-shaped steel column and an H-shaped steel beam according to the present invention is characterized in that reinforcing bars are arranged in the space between the formwork member, the H-shaped steel column, and the H-shaped steel beam. And

  Moreover, the seismic reinforcement structure for a structure composed of an H-shaped steel column and an H-shaped steel beam according to the present invention makes the length of the reinforcing plate longer than the length of the mold member, and It is characterized by not connecting a connecting part.

  In addition, the seismic reinforcement structure for a structure composed of an H-shaped steel column and an H-shaped steel beam according to the present invention has an L-shaped cross section in which a continuous fiber sheet is sandwiched between the intersection of the web and flange of the H-shaped steel column and the H-shaped steel beam. The reinforcing member is arranged with an adhesive.

An engaging portion that engages with the flange end portion is formed at both ends of the center portion that is fitted between the flanges of the H- shaped steel column and the H-shaped steel beam, and tie rod insertion holes are formed at positions corresponding to the tie rod insertion holes formed in the web. Formed and continuously formed in a longitudinal direction and a lateral direction, a continuous fiber sheet disposed on the outer surface of the mold member and the outer surface of the H-shaped steel column and the flange of the H-shaped steel beam, and the continuous fiber sheet A tie rod insertion hole formed in the web laminated on the outside of the mold member on which the tie is disposed and a tie rod insertion hole formed at a position corresponding to the tie rod insertion hole formed in the mold member, a reinforcement plate, and a mold member A tie rod with male threads on both ends inserted into the tie rod insertion holes formed on the web, and a continuous fiber sheet placed on the flange of the H-shaped steel column and H-shaped steel beam, and a reinforcing plate is placed and reinforced Part Interlinking a plurality of the L-shaped connecting reinforcement member connected to H-section steel columns and H-shaped steel beam via the corner portions of the continuous fiber sheet and arranged on the reinforcing plate connecting bolt, H-beam pillars, H-shaped By providing the solidified material filled in the space surrounded by the steel beam and the formwork member, the seismic reinforcement space can be minimized and the number of parts is small, and the H-shaped steel column and the H-shaped steel beam can be reduced. Seismic resistance of structures consisting of H-shaped steel columns and H-shaped steel beams, which can be easily and quickly arranged for reinforcing materials, and where the intersections of H-shaped steel columns and H-shaped steel beams are strongly seismically reinforced. A reinforcing structure can be provided.
By connecting a pair of L-shaped connecting reinforcing members facing in parallel with connecting long bolts, it becomes possible to facilitate the connecting work, and the solidifying material solidifies and the connecting long bolt is integrated with the solidifying material and reinforced. It is possible to exert an effect.
By seismic reinforcement on both sides of the H-shaped steel column and the web of the H-shaped steel beam or only one side of the web, it is possible to obtain sufficient seismic resistance even with seismic reinforcement on only one side due to the presence of obstacles. Become.
Seismic performance can be enhanced by arranging reinforcing bars in the space between the formwork member, the H-shaped steel column, and the H-shaped steel beam.
By making the length of the reinforcing plate longer than the length of the formwork member so that the connecting part of the formwork member and the connecting part of the reinforcing plate do not match, the strength against displacement during an earthquake is improved. It becomes possible.
By arranging an L-shaped reinforcing member having a continuous fiber sheet sandwiched between the web and flange of the H-shaped steel column and the H-shaped steel beam with an adhesive, the seismic performance can be further enhanced.

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  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a structure composed of an H-shaped steel column 1 and an H-shaped steel beam 2.

  In the embodiment shown in FIG. 1, the H-shaped steel column 1 and the H-shaped steel beam 2 intersect in a cross shape, but the H-shaped steel column 1 and the H-shaped steel beam intersect in three directions. However, it may be a single character that intersects in two directions. The H-shaped steel column 1 has a shape in which upper and lower flanges 1a and 1a are connected by a web 1b. The H-shaped steel beam 2 has a shape in which upper and lower flanges 2a and 2a are connected by a web 2b.

  2, 3, and 4 are diagrams showing seismic reinforcement of the H-shaped steel column 1. Tie rod insertion holes are formed in the web 1b at predetermined intervals.

  The mold member 3 is formed of a metal such as steel or a resin such as reinforced resin. The formwork member 3 includes a central portion 3a that is fitted between the flanges 1a and 1a of the H-shaped steel column 1, and an engaging portion 3b that is engaged with the end surfaces of the flanges 1a and 1a at both ends of the central portion 3a. A tie rod insertion hole is formed at a position corresponding to the tie rod insertion hole formed in the web 1 b of the H-shaped steel column 1 in the central portion 3 a of the mold member 3.

  A continuous fiber sheet 4 is disposed on the surface of the mold member 3 with an adhesive. The continuous fiber sheet 4 is also disposed on the surfaces of the upper and lower flanges 1a and 1a. Examples of the material of the continuous fiber sheet 4 include inorganic fibers such as carbon fibers, and organic fibers such as aramid fibers, polyethylene fibers, and polyarate fibers. The tensile strength in one direction and two directions formed by these fibers is as large as 5 to 180 ton / m. By providing the continuous fiber sheet 4, it is possible to improve the tensile strength and the seismic attenuation.

  A reinforcing plate 5 is laminated and disposed on the mold member 3 on which the continuous fiber sheet 4 is disposed. The reinforcing plate 5 is formed of a metal such as steel or a resin such as reinforced resin. In the reinforcing plate 5, tie rod insertion holes are formed at positions corresponding to tie rod insertion holes formed in the web 1b and tie rod insertion holes formed in the mold member 3. The length of the reinforcing plate 5 is made longer than the length of the mold member 3. The position of the continuous portion formed by connecting the formwork members 3 and the position of the continuous portion of the reinforcing plate 5 are not matched to improve the strength against displacement during an earthquake.

  FIG. 3 shows an embodiment in which both sides sandwiched between the webs 1b are seismically reinforced. Tie rod insertion through holes formed in the web 1b, tie rod insertion holes formed in the formwork member 3, and nuts on both ends of the tie rod 6 inserted into the tie rod insertion holes formed in the reinforcing plate 5 are screwed and fixed. .

  FIG. 4 is a diagram showing an embodiment in which only one side of the web 1b is seismically reinforced due to the presence of an obstacle or the like. Even with the seismic reinforcement on one side only, sufficient seismic performance can be obtained.

  Reinforcing bars 7 are arranged as necessary before filling the space between the mold member 3 and the H-shaped steel column 1 with the solidifying material.

  5, 6, and 7 are diagrams showing seismic reinforcement of the H-shaped steel beam 2. Tie rod insertion holes are formed in the web 2b at predetermined intervals.

  The mold member 3 is formed of a metal such as steel or a resin such as reinforced resin. The formwork member 3 includes a central portion 3a that is fitted between the upper and lower flanges 2a and 2a of the H-shaped steel beam 2, and engaging portions 3b that are engaged with the end surfaces of the flanges 2a and 2a at both ends of the central portion 3a. A tie rod insertion hole is formed in the center portion 3a of the mold member 3 at a position corresponding to the tie rod insertion hole formed in the web 2b of the H-shaped steel beam 2.

  A continuous fiber sheet 4 is disposed on the surface of the mold member 3 with an adhesive. The continuous fiber sheet 4 is also disposed on the surfaces of the upper and lower flanges 2a and 2a. Examples of the material of the continuous fiber sheet 4 include inorganic fibers such as carbon fibers, and organic fibers such as aramid fibers, polyethylene fibers, and polyarate fibers. The tensile strength in one direction and two directions formed by these fibers is as large as 5 to 180 ton / m. By providing the continuous fiber sheet 4, it is possible to improve the tensile strength and the seismic attenuation.

  A reinforcing plate 5 is laminated and disposed on the mold member 3 on which the continuous fiber sheet 4 is disposed. The reinforcing plate 5 is formed of a metal such as steel or a resin such as reinforced resin. In the reinforcing plate 5, tie rod insertion holes are formed at positions corresponding to tie rod insertion holes formed in the web 2b and tie rod insertion holes formed in the mold member 3. The length of the reinforcing plate 5 is made longer than the length of the mold member 3. The position of the continuous portion formed by connecting the formwork members 3 and the position of the continuous portion of the reinforcing plate 5 are not matched. By preventing the positions of the continuous portion of the mold member 3 and the continuous portion of the reinforcing plate 5 from matching, the strength against displacement during an earthquake can be improved.

  FIG. 6 shows an embodiment in which both sides sandwiched between webs 2b are seismically reinforced. A tie rod insertion through hole formed in the web 2b, a tie rod insertion hole formed in the mold member 3, and a tie rod 6 both ends male screw inserted into the tie rod insertion hole formed in the reinforcing plate 5 are screwed and fixed.

  FIG. 7 is a diagram showing an embodiment in which only one side of the web 2b is seismically reinforced due to the presence of an obstacle or the like. Even with the seismic reinforcement on one side only, sufficient seismic performance can be obtained.

  Before the solidification material is filled into the space between the formwork member 3 and the H-shaped steel beam 2, reinforcing bars 7 are arranged as necessary.

  FIG. 8 shows the H-shaped steel column 1 and the H-shaped steel beam 2 which are implemented at the stage after the placement of the formwork member 3 and the reinforcing plate 5 on the H-shaped steel column 1 and the H-shaped steel beam 2 and before the filling of the solidifying material. FIG. 9 is a front view showing an embodiment of seismic reinforcement at the intersection of FIG. 9, and FIG. 9 is a top view.

  The embodiment shown in FIGS. 8 and 9 shows a case in which the H-shaped steel beam 2 intersects the H-shaped steel column 1 in a cross shape. When the H-shaped steel column 1 and the H-shaped steel beam 2 intersect in a cross shape, there are eight intersecting portions that are orthogonal to each other. L-shaped connection reinforcing members 8 are arranged at eight intersecting portions orthogonal to each other.

  In a state where the formwork member 3, the continuous fiber sheet 4, and the reinforcing plate 5 are arranged on the H-shaped steel column 1 and the H-shaped steel beam 2, the L-shaped connecting reinforcing member 8 is an H-shaped member on which the continuous fiber sheet 4 is arranged. A flange 1a of the section steel column 1 and a flange 2a of the H-shaped steel beam 2 on which the continuous fiber sheet 4 is disposed, and a parallel opposing case, a reinforcing plate 5 disposed on the H-section steel column 1 and the H-section steel There is a case in contact with the reinforcing plate 5 arranged on the beam 2 and facing in parallel.

  Case in which the L-shaped connecting reinforcing member 8 is in contact with the flange 1a of the H-shaped steel column 1 on which the continuous fiber sheet 4 is disposed and the flange 2a of the H-shaped steel beam 2 on which the continuous fiber sheet 4 is disposed and is opposed in parallel. The connection long bolt insertion holes are formed in the flanges 1a and 1a and the flanges 2a and 2a, the corresponding L-shaped connection reinforcing members 8 are also formed with connection long bolt insertion holes, and the connection long bolts 9 are parallel to each other. The opposing L-shaped connecting reinforcing members are connected simultaneously.

  The L-shaped connecting reinforcing member 8 is in contact with the reinforcing plate 5 arranged on the H-shaped steel column 1 and the reinforcing plate 5 arranged on the H-shaped steel beam 2, and the connection of the parallel opposing cases is the same as that of the tie rod 6. In addition, the connecting long bolt insertion holes are formed in the webs 1 b and 2 b, the mold member 3, and the reinforcing plate 5, and the corresponding long bolt insertion holes are formed in the corresponding L-shaped connecting reinforcing members 8. Both L-shaped connecting reinforcement members facing in parallel are connected simultaneously. Further, a tie rod insertion hole is formed in the L-shaped connection reinforcing member 8, and an L-shaped connection reinforcing plate 9 is connected by the tie rod 6, which is also used as the connection long bolt 9.

  By connecting the L-shaped connecting reinforcing member 8 with the connecting long bolt 9 at the same time, the connecting operation can be easily performed. Further, when the solidified material is filled and solidified, the connecting long bolt 9 is integrated with the solidified material and exhibits the function of a reinforcing bar.

  When the arrangement and connection of the L-shaped connecting reinforcing member 8 to the intersection of the H-shaped steel beam 2 and the H-shaped steel column 1 are completed, the space between the H-shaped steel column 1 and the formwork member 3, The space of the mold member 3 is filled with a solidifying material such as high-strength concrete mortar and solidified. The H-shaped steel column 1, the H-shaped steel beam 2, the formwork member 3, and the reinforcing plate 5 are integrated, and the H-shaped steel column 1 and the H-shaped steel beam 2 are seismically reinforced. Further, the intersection of the H-shaped steel column 1 and the H-shaped steel beam 2 where stress during an earthquake is concentrated by the L-shaped connecting reinforcement member 8 arranged and connected to the intersection of the H-shaped steel column 1 and the H-shaped steel beam 2. Is a seismic reinforcement structure for a structure composed of strong H-shaped steel columns and H-shaped steel beams.

  FIG. 10 is a view showing a cross-sectional T-shaped member 11 which is a basic shape for forming a cross-sectional L-shaped reinforcing member 10 sandwiching continuous fibers. In the cross-section T-shaped member 11, the continuous fiber sheet 4 is disposed in a sandwich shape between the upright portions 12 a of the pair of L-shaped steels 12 via an adhesive. Moreover, the continuous fiber sheet 4 is arrange | positioned through the adhesive agent between the horizontal part 12b of a pair of L-shaped steel 12, and the pressing plate 13 in the shape of a sandwich.

  FIG. 11 is a view showing a cross-sectional L-shaped reinforcing member 10 sandwiching the continuous fiber sheet 4 formed from the cross-sectional T-shaped member 11 sandwiching the continuous fiber sheet 4 shown in FIG. 10. The end portions of the pair of cross-section T-shaped members 11 are cut at an angle of 45 degrees, and the cut-out portions of the pair of cross-section T-shaped members 1 are arranged to contact each other. A horizontal portion 12b in which the fiber sheets 3 of the pair of cross-section T-shaped members 11 are arranged in a sandwich shape and a presser plate 13 are positioned at the L-shaped outer right angle corner. An L-shaped connecting plate 14 is arranged at an inner right-angled corner, and the L-shaped connecting plate 14 and the horizontal portion 12b in which the fiber sheet 3 of the pair of T-shaped members 11 is arranged in a sandwich shape and the presser plate 13 are connected by a connecting bolt 15. Then, the cross-sectional L-shaped reinforcing member 10 sandwiching the continuous fiber sheet 4 is formed.

  The L-shaped reinforcing member 10 sandwiched between the continuous fiber sheets 4 formed in this way does not expose the continuous fiber sheet 4 improving the tensile strength and vibration energy attenuation to the surrounding environment, and deteriorates due to ultraviolet rays or the like. Is prevented, and the performance can be maintained for a long time, and a reinforcing member excellent in earthquake resistance and durability can be obtained.

  An L-shaped reinforcing member 10 having a continuous fiber sheet sandwiched between the web 1b and the flange 1a of the H-shaped steel column 1 and the web 2b and the flange 2a of the H-shaped steel beam 2 is disposed via an adhesive. . It becomes possible to enhance the seismic performance.

  As described above, according to the seismic reinforcement structure for a structure including the H-shaped steel column and the H-shaped steel beam according to the present invention, the seismic reinforcement space can be minimized, the number of parts is small, and the H-shaped steel column and H It is possible to easily and quickly place the reinforcing material on the shaped steel beam. From the H-shaped steel beam and the H-shaped steel beam, the intersection of the H-shaped steel column and the H-shaped steel beam is strongly seismically reinforced and has extremely high seismic performance. It is possible to provide a seismic reinforcement structure for the structure.

1: H- shaped steel column, 1a: flange, 2b: web, 2: H-shaped steel beam, 2a: flange, 2b: web, 3: formwork member, 3a: central part, 3b: engaging part, 4: continuous Fiber sheet, 5: Reinforcing plate, 6: Tie rod, 7: Reinforcing bar, 8: L-shaped connecting reinforcing member , 9: Long connecting bolt, 10: Cross section L-shaped reinforcing member sandwiching continuous fiber sheet, 11: Cross section T L-shaped member, 12: L-shaped steel, 12a: upright portion, 12b: horizontal portion, 13: presser plate, 14: L-shaped connecting plate, 15: connecting bolt

Claims (6)

An engaging portion that engages with the flange end portion is formed at both ends of the center portion that is fitted between the flanges of the H- shaped steel column and the H-shaped steel beam, and tie rod insertion holes are formed at positions corresponding to the tie rod insertion holes formed in the web. A formwork member formed and continuously provided in the vertical direction and the horizontal direction;
A continuous fiber sheet disposed on the outer surface of the formwork member and the H-shaped steel column, the flange outer surface of the H-shaped steel beam;
A reinforcing plate in which tie rod insertion holes are formed at positions corresponding to tie rod insertion holes formed in the web and tie rod insertion holes formed in the mold member, laminated on the outside of the mold member on which the continuous fiber sheet is disposed;
Reinforcement plate, formwork member, tie rod formed with male threads at both ends inserted into tie rod insertion holes formed in the web,
The continuous fiber sheet is arranged on the flange of the H-shaped steel column and the H-shaped steel beam, and the connecting bolts are arranged on the continuous fiber sheet and the reinforcing plate at a plurality of orthogonal corners of the intersecting portion where the reinforcing plate is arranged and reinforced. and L-shaped connecting reinforcement member connected to H-section steel columns and H-shaped steel beam via,
A solidified material filled in a space surrounded by an H- shaped steel column, an H-shaped steel beam and a formwork member;
A seismic reinforcement structure for a structure comprising an H- shaped steel column and an H-shaped steel beam. 2. A seismic reinforcement structure for a structure composed of an H- shaped steel column and an H-shaped steel beam according to claim 1, wherein a pair of parallel L-shaped connecting and reinforcing members are connected by connecting long bolts. H-shaped steel column, consisting of H-section steel columns and H-shaped steel beam as claimed in claim 1 or 2, characterized in that only the seismic reinforcement on one side of the sandwiching both sides or web a web of H shaped steel beams to Seismic reinforcement structure for structures. Frame members and H-shaped steel pillars, H-section steel columns and H-shaped steel beam as claimed in any one of claims 1 to 3, characterized in that Haisuji a reinforcement in the space between the H-shaped steel beam Seismic reinforcement structure for structures consisting of The length of the reinforcing plate is longer than the length of the Katawaku member, any one of claims 1, characterized in that the connecting portion of the connecting portion and the reinforcing plate of the mold member is prevented match 4 Seismic reinforcement structure for structures consisting of H- shaped steel columns and H-shaped steel beams. Claims 1, characterized in that arranged sandwiching a continuous fiber sheet at the intersection of the web and the flanges of the H-shaped steel columns and H shaped steel beams to the L-shaped cross-section reinforcement member with an adhesive to any one of the 5 Seismic reinforcement structure for structures consisting of H- shaped steel columns and H-shaped steel beams.

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