JP4881092B2 - Seismic wall or seismic control wall made of corrugated steel sheet and its manufacturing method - Google Patents

Description

  The present invention belongs to a technical field of a seismic wall or a seismic control wall (hereinafter sometimes simply referred to as a seismic wall) utilizing the mechanical characteristics of corrugated steel sheets, and a seismic wall manufactured by the manufacturing method. In addition, a method for producing a seismic wall or damping wall exhibiting necessary and sufficient mechanical characteristics by using a thin corrugated steel sheet produced by using a thin steel sheet that can be bent and formed by a commonly used press machine, and the same production It relates to a seismic wall manufactured by the method.

Currently, the present applicant has developed a technology of a seismic wall or a seismic control wall using corrugated steel plates and has already filed a separate application (see, for example, Patent Documents 1 to 8).
Focusing on the mechanical properties of this corrugated steel sheet, the following characteristics are observed. The corrugated steel sheet referred to in the present invention is described as “steel corrugated sheet” in the JIS standard, and is also simply referred to as a folded sheet or corrugated sheet in the actual business, and the cross-sectional shapes are illustrated in FIGS. The trapezoidal wave shape (FIG. 5A), the rectangular wave shape (FIG. 5B), the triangular shape (FIG. 5C), the circular wave shape (FIG. 5D), and the like are indicated.
As illustrated in FIG. 3, the corrugated steel plates are folded plates, so that each one resists the shearing force, and the whole resists the shearing force as a set. Further, when the shear buckling length is short and the shear strength is compared with that of a flat plate, the shear strength is much larger. Moreover, the shear strength and rigidity can be controlled quite freely by the strength of the material of the steel plate, the thickness of the plate, the pitch of the folded plate, and the wave height.
With respect to the vertical axial force, as illustrated in FIG. 4A, since it freely expands and contracts like an accordion, its rigidity and proof stress are much smaller than those of a flat plate. In addition, as shown in FIG. 4B, the bending in the corrugated plane freely expands and contracts like an accordion, and the rigidity and proof stress are much smaller than those of a flat plate. On the other hand, the rigidity and proof strength against the out-of-plane force (bending and shearing) in the direction perpendicular to the corrugated streaks are sufficiently large because they are folded plates. However, the resistance to the out-of-plane bending and shearing in the direction parallel to the corrugated streaks is small because they are folded plates.

  In other words, the inventions described in the following Patent Documents 1 to 8 are earthquake-resistant walls or vibration-damping walls utilizing the mechanical properties of the corrugated steel sheet, so that the corrugated steel sheet is effective for bending and shearing due to the horizontal force of the frame. The shear strength and rigidity are sufficiently large. Nevertheless, the rigidity of the frame and the resistance to bending forces in the out-of-plane direction exhibit small mechanical properties. Therefore, it is possible to expect a variable stiffness function that has high strength (proof strength) against seismic force and excellent deformation performance (toughness) at high strength.

JP 2005-264713 A JP 2005-232760 A JP 2006-37581 A JP 2006-37585 A JP 2006-37586 A JP 2006-37628 A JP 2006-37659 A JP 2006-45776 A

  The thickness of the corrugated steel sheet exhibiting the above-described mechanical characteristics is generally required to be about 6 mm to 22 mm. However, the only way to bend a steel plate with a thickness of about 6mm to 22mm into a corrugated shape is to form it with a dedicated press that is installed only in a specific factory, making it very difficult, costly, and productive. Is bad. Moreover, it is difficult to transport a thick and very heavy corrugated steel sheet from the factory to the construction site without a heavy machine such as a crane, and the work is troublesome.

  Incidentally, the above-mentioned patent document 6 discloses a technique in which a plurality of unit corrugated steel plates are superposed (see paragraph [0048] and FIG. 8). However, the corrugated steel sheet described in Patent Document 6 has no technical idea of joining the unit corrugated steel sheets simply by superimposing a plurality of unit corrugated steel sheets, and does not describe any plate thickness of the corrugated steel sheets. .

  An object of the present invention is to use a thin steel plate having a thickness of about 3 mm, and use a corrugated steel plate that can be easily formed by a commonly used press machine. A method of manufacturing a wall and a seismic wall manufactured by the manufacturing method are provided.

As a means for solving the problems of the prior art, a method for manufacturing a seismic wall or a seismic control wall using a corrugated steel plate according to the invention of the first aspect is as follows:
At least two thin corrugated steel sheets 2 formed by bending thin steel sheets into a corrugated shape are overlapped in an arrangement in which the spacers 3 are sandwiched and the unevenness is in the same direction. It is characterized by being integrally joined with a bolt 4 in the out-of-plane direction.

The manufacturing method of the earthquake-resistant wall or the damping wall by the corrugated steel plate according to the invention of the second aspect is as follows:
At least two or more thin corrugated steel sheets 2 formed by bending thin steel sheets into a corrugated shape are superposed in an arrangement in which concavities and convexities face each other, and the superposed thin corrugated steel sheets 2 are integrated with bolts 4 in an out-of-plane direction. It is characterized in that it is joined to.

The earthquake-resistant wall or damping wall made of corrugated steel plate according to the invention of the third aspect is
At least two sheets of corrugated steel sheets 2 formed by bending thin steel sheets into a corrugated shape are overlapped in the same direction with spacers in between, and the superposed sheet corrugated steel sheets 2 are in the out-of-plane direction. It is characterized by being integrally joined with a bolt 4.

A seismic wall or a damping wall made of corrugated steel sheets according to the invention of the fourth aspect
At least two sheets of corrugated steel sheets 2 formed by bending thin steel sheets into a corrugated shape are superposed in an arrangement with concavities and convexities facing each other, and the superposed sheet corrugated steel sheets 2 are integrated with bolts 4 in the out-of-plane direction. It is characterized by being joined to.

  The seismic wall or damping wall of the corrugated steel sheet according to the present invention and the manufacturing method thereof exhibit the necessary and sufficient mechanical characteristics using the thin corrugated steel sheet 2 formed by bending a thin steel sheet having a thickness of about 3 mm into a wave shape. It is a method of manufacturing the earthquake resistant wall or damping wall 1 by superposing and joining at least two sheets so that the wall thickness (typically about 6 mm to 22 mm) is obtained. Since it can be easily formed into a corrugated shape by a generally used press, it is easy to manufacture and has excellent productivity. Moreover, the thin corrugated steel sheet 2 having a light weight can be transported manually without using a heavy machine such as a crane, and is excellent in transport work. Since the formed corrugated steel sheet 2 can be transported from the factory to the construction site and then superposed and joined together to produce the earthquake resistant wall or the vibration control wall 1, it is excellent in work efficiency and economical. According to the method of the present invention, the wall thickness of the seismic wall or damping wall 1 can be easily designed and changed by adjusting the number of thin corrugated steel plates 2. Optimum rigidity and proof stress can be exhibited, greatly contributing to the improvement of seismic performance of buildings.

  At least two or more thin corrugated steel sheets 2 formed by bending thin steel sheets into a corrugated shape, with the spacers 3 sandwiched between them, the concavities and convexities are overlapped in the same direction, and the overlapped thin corrugated steel sheets 2. The earthquake-resistant wall or damping wall 1 is manufactured by integrally joining with bolts 4.

  Alternatively, at least two sheets of corrugated steel sheet 2 formed by bending a thin steel sheet into a corrugated shape are overlapped with each other, and the laminated sheet corrugated steel sheets 2 are integrated with bolts 4 from the out-of-plane direction. The seismic wall or damping wall 1 is manufactured by joining them together.

Hereinafter, the present invention will be described based on illustrated embodiments.
First, FIG. 1 (A), (B) shows the completion figure of the earthquake-resistant wall 1 (henceforth the case of a damping wall) by the corrugated steel plate manufactured with the manufacturing method which concerns on invention of Claim 1. FIG. Yes.
The earthquake resistant wall 1 includes two thin corrugated steel plates 2 formed by bending a thin steel plate having a thickness of about 3 mm into a corrugated shape with a general press machine (see FIG. 1B). The spacers 3 installed on the surface portion 2a are sandwiched between them, the concaves and convexes are overlapped in the same direction, and the laminated thin corrugated steel plates 2 ... are integrated with a plurality of bolts 4 passed in the out-of-plane direction on the vertical surface portion 2a. (See FIG. 1A). A plurality of the bolts 4 are installed at regular intervals in the left-right direction.
However, the number of the thin corrugated steel plates 2 constituting the earthquake-resistant wall 1 is not limited to the illustrated number, and may be appropriately increased or decreased according to the earthquake-resistant / seismic design of the building.
Further, the bolt 4 can be suitably implemented by using a high-strength bolt that has a high axial force and can be expected to be joined by transmitting a shearing force by an inter-material frictional force.

  The thin corrugated steel sheet 2 is made of a thin steel sheet such as ordinary steel, low yield point steel or high-tensile steel having different yield strengths according to the seismic / damping design of the building. For example, the earthquake resistant wall 1 made of corrugated steel sheets according to the present invention can be manufactured by superimposing thin corrugated steel sheets 2 made of the same kind of steel material and integrally joining them, or combining thin corrugated steel sheets 2 made of different steel materials. It can also be manufactured by overlapping and integrally joining.

  The bolt 4 is passed through a common bolt hole provided in advance in the vertical surface portion 2 a of the thin corrugated steel plate 2 and the spacer 3, and is strongly tightened with a nut 5. In the illustrated embodiment, in order to increase the bonding strength, the bolt 4 is also passed through the common bolt hole through the upper and lower slope portions 2 b of the thin corrugated steel plate 2 and is strongly tightened with the nut 5. However, it is not necessary to provide the spacer 3 on the slope portion 2b.

As described above, the earthquake resistant wall 1 manufactured by superimposing two thin corrugated steel sheets 2 and 2 having a thickness of about 3 mm and integrally joining them with bolts 4 is necessary because the wall thickness is about 6 mm. Sufficient mechanical properties can be exhibited.
The wall thickness of the earthquake-resistant wall 1 can be easily designed and changed simply by adjusting the number of thin corrugated steel sheets 2. Specifically, when three thin corrugated steel sheets 2 are stacked, the thickness is 9 mm, and when four sheets are stacked, the thickness is 12 mm, and the optimum rigidity and proof stress can be exhibited as the earthquake resistant wall 1.
Incidentally, the thin corrugated steel sheet 2 can be implemented using, for example, a thin steel sheet having a thickness of about 2 mm. In this case, at least three or more thin corrugated sheets are used in order to exhibit necessary and sufficient mechanical characteristics. The earthquake resistant wall 1 may be manufactured by superimposing and integrally joining the steel plates 2.

  Therefore, according to the production method of the present invention, the earthquake resistant wall or the damping wall made of the corrugated steel sheet can be easily formed into a corrugated shape by using a generally used press machine with a thin steel sheet having a thickness of about 3 mm. The production of the thin corrugated steel sheet 2 is easy and the productivity is excellent. Moreover, the thin corrugated steel sheet 2 having a light weight can be transported manually without using a heavy machine such as a crane, and is excellent in transport work. Since the formed thin corrugated steel sheet 2 is transported from the factory to the construction site, and is superposed and integrally joined to produce the earthquake resistant wall or the damping wall 1, it is excellent in work efficiency and economical.

  The seismic wall 1 manufactured as described above is incorporated into the surface of a column beam frame or a column slab frame by attaching joining frames 6 to both side edges as disclosed in, for example, Patent Documents 1 to 8 above. After being joined, it can be joined to the left and right pillars via the joining frame 6 to function as the earthquake-resistant wall or the damping wall 1. However, there are cases where a joining frame is attached to the upper and lower edges of the earthquake-resistant wall, and the joining frame is joined to the upper and lower beams, or the upper and lower beams and the left and right columns.

Next, the manufacturing method of the earthquake-resistant wall or the damping wall by the corrugated steel plate based on invention of Claim 2 is demonstrated based on FIG. The description of the thin corrugated steel sheet 2 (see paragraph number [0016]) and the description of the effects (see paragraph numbers [0018] and [0019]) that overlap with the description of the first embodiment are omitted.
2 (A) and 2 (B) show completed views of the earthquake-resistant wall 1 ′ (hereinafter also including a damping wall) made of corrugated steel plates manufactured by the manufacturing method according to the second aspect of the present invention. .
This seismic wall 1 'is composed of two thin corrugated steel sheets 2 formed by bending a thin steel sheet having a thickness of about 3 mm into a corrugated shape with a general press machine, with the concavities and convexities facing each other (see FIG. 2B). The laminated corrugated steel sheets 2 and 2 are integrally joined with a plurality of bolts 4 passing through the vertical surface portion 2a in the out-of-plane direction (see FIG. 2A). A plurality of the bolts 4 are installed at regular intervals in the left-right direction.
However, the number of the thin corrugated steel plates 2 constituting the earthquake-resistant wall 1 ′ is not limited to the illustrated number, and may be appropriately increased or decreased according to the earthquake-resistant / seismic design of the building. That is, as in the first embodiment, a combination of concaves and convexes in the same direction is joined face to face.
Further, the bolt 4 can be suitably implemented by using a high-strength bolt that has a high axial force and can be expected to be joined by transmitting a shearing force by an inter-material frictional force.

  The bolt 4 is passed through a common bolt hole provided in advance in the vertical surface portion 2 a of the thin corrugated steel plate 2 and the spacer 3, and is strongly tightened with a nut 5.

  The seismic wall 1 ′ manufactured as described above is also provided in the plane of the column beam frame or the column slab frame by attaching the joining frames 6 to both side edges as disclosed in, for example, Patent Documents 1 to 8. After being incorporated, it can be joined to the left and right columns via the joining frame 6 to function as a seismic wall or damping wall 1 ′. However, there are cases where a joining frame is attached to the upper and lower edges of the earthquake-resistant wall, and the joining frame is joined to the upper and lower beams, or the upper and lower beams and the left and right columns.

  The present invention has been described based on the embodiments. However, the present invention is not limited to the illustrated embodiments. As long as it does not deviate from the gist and technical idea of the present invention, it will be mentioned here that various embodiments can be realized according to modifications and applications of those skilled in the art.

(A) is a front view which shows the earthquake-resistant wall by the corrugated steel plate based on invention of Claim 1 and 3. FIG. (B) is a side view of (A). (A) is a front view which shows the earthquake-resistant wall by the corrugated steel plate based on invention of Claim 2 and 4. (B) is a side view of (A). It is the perspective view which showed typically the state of the shear deformation of a corrugated steel plate. (A) is explanatory drawing which showed the state of the axial compression of a corrugated steel plate. (B) is explanatory drawing which showed the state of the bending of a corrugated steel plate. (A)-(D) are explanatory drawings which showed the different cross-sectional shape of a corrugated steel plate.

Explanation of symbols

1, 1 'shear wall (damping wall)
2 Thin corrugated steel sheet 3 Spacer 4 Bolt

Claims (4)

The thin corrugated steel molded by bending a thin steel plate in a wave shape, sandwiched between a scan pacer, multiple overlay as irregularities of the wave shape becomes in the same direction, superimposed out-of-plane direction of the thin corrugated steel was the bolts passing through the, characterized in that one body bonded to the thin waveform steel plates superimposed, a manufacturing method of the shear walls or seismic damping wall according corrugated steel. In the method of manufacturing a seismic wall or seismic control wall made of corrugated steel, incorporated in the plane of a column beam frame or a column slab frame,
The thin corrugated steel molded into corrugated shape in which the vertical surface portion and the slope portion are alternately repeated by bending a thin steel sheet, a crease in a horizontal, irregularities of the wave shape so as to contact the vertical surface portion to each other face to face A method for producing a seismic wall or damping wall using corrugated steel sheets, wherein a plurality of the superposed corrugated steel sheets are integrally joined with bolts in an out-of-plane direction. Thin corrugated steel molded by bending a thin steel plate in the waveform shape, sandwiched between a scan pacer, irregularities of the wave shape are superposed more so in the same direction, out-of-plane of the thin corrugated steel superimposed direction the bolts passing through the said thin corrugated steel between superimposed are one body bonded, Hashiraharika構又is characterized in that it is incorporated in the plane of the pillars slab Frames, shear walls or seismic damping wall according corrugated steel . In the seismic wall or damping wall made of corrugated steel, incorporated in the plane of the column beam frame or column slab frame,
Thin corrugated steel where the vertical surface portion and the inclined surface was formed by bending a corrugated thin steel sheet are repeated alternately, a crease in a horizontal, irregularities of the wave shape so as to contact the vertical surface portion to each other face to face multiple superposed so that, superimposed the thin corrugated steel to each other, characterized in that it is integrally joined by a bolt in the out-of-plane direction, shear wall by corrugated steel or seismic damping wall.

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