JP2020158992A - Connecting member and base isolation scaffold using the same - Google Patents

Abstract

To provide a connecting member capable of firmly fixing a temporary scaffold to a building body in normal times and performing base isolation when the shaking strength by an earthquake exceeds a predetermined set strength.SOLUTION: A connecting member 16 of the present invention is a connecting member for connecting a structure 3 and an external temporary structure 10 for the structure. A structure connecting part 16C is disposed at one end of a connecting part body (buffer mechanism part) 16E, and a temporary structure connecting part 16B is disposed at the other end of the connecting part body (buffer mechanism part) 16E. The connecting part body (buffer mechanism part) 16E includes an expansion member 16A and an expansion restriction member 16D. The expansion member 16A can expand and contract according to the shaking of the structure 3. The expansion restriction member 16D restricts the expansion and contraction of the expansion member 16A when the shaking strength of the structure 3 is equal to or less than the predetermined set strength, and releases the restriction to allow the expansion member 16A to expand and contract when the shaking strength exceeds the set strength.SELECTED DRAWING: Figure 2

Description

The present invention relates to a connecting member for connecting a structure and an external temporary structure for the structure, and a seismic isolation scaffold using the connecting member.

Seismic isolation devices are installed in high-rise buildings and tower condominiums to mitigate the shaking of earthquakes. Even in seismic isolation buildings such as high-rise buildings and tower apartments, in exterior wall repair work, etc., the seismic isolation device of the building itself is locked during the construction period to prevent the seismic isolation device from operating during an earthquake. .. However, there is a possibility that a large earthquake will occur even during the construction period, and in this case, the lock may be released and the building itself may shake significantly, causing the external scaffolding to collapse. To deal with this, a seismic isolation structure for scaffolding has also been proposed (Patent Document 1 etc.).

Japanese Unexamined Patent Publication No. 2008-291859

The temporary scaffolding (external scaffolding) installed outside the building usually needs to be connected to and fixed to the building body by a connecting member at an appropriate place in order to prevent the temporary scaffolding from collapsing. If this connecting member has a function of cushioning shaking, seismic isolation is possible regardless of whether the temporary scaffold has a seismic isolation structure.

However, if the connecting member has a constant shaking buffer function, the temporary scaffolding is insufficiently fixed to the building body. Therefore, in the case of strong winds, the temporary scaffolding will move unstable even though the building itself does not shake. On the other hand, if the fixing by the connecting member is strengthened in order to prevent this, the connecting member cannot exert the cushioning function and seismic isolation cannot be performed.

Therefore, in the present invention, a temporary scaffold is normally firmly fixed to the building body, and a connecting member capable of seismic isolation when the shaking strength due to an earthquake exceeds a preset set strength and seismic isolation using the same. The purpose is to provide a foothold.

In order to achieve the above object, the connecting member of the present invention is a connecting member for connecting a structure and an external temporary structure for the structure.
The connecting member includes a connecting portion main body, a structure connecting portion, and an external temporary structure connecting portion.
The structure connecting portion is arranged at one end of the connecting portion main body, and the structure connecting portion is arranged.
The temporary structure connecting portion is arranged at the other end of the connecting portion main body, and the temporary structure connecting portion is arranged.
The connecting portion main body includes a shock absorbing mechanism portion.
The cushioning mechanism portion includes an expansion / contraction member and an expansion / contraction limiting member.
The telescopic member can be expanded and contracted in response to the shaking of the structure.
The expansion / contraction limiting member limits the expansion / contraction of the expansion / contraction member when the shaking strength of the structure is equal to or less than a preset set strength, and releases the restriction when the shaking strength exceeds the preset strength. The telescopic member can be expanded and contracted.
It is a connecting member.

The seismic isolation scaffold of the present invention is a seismic isolation scaffold for structures.
The connecting member of the present invention and the external temporary structure are included.
One end of the connecting member is connected to the external temporary structure by the temporary structure connecting portion, and the other end is connectable to the structure by the structure connecting portion.

According to the connecting member and the seismic isolation scaffold of the present invention, when the temporary scaffold (external temporary structure) is normally firmly fixed to the building body (structure) and the shaking strength due to the earthquake exceeds the preset set strength. Seismic isolation is possible.

FIG. 1 is a diagram showing an example of the configuration of the seismic isolation scaffold of the present invention when viewed from the side direction. A to C of FIG. 2 are views showing an example of the case where the connecting member of the present invention is viewed from above in FIG. A to C of FIG. 3 are views from the side view of another example of the configuration of the seismic isolation scaffold of the present invention. A to C of FIG. 4 is a diagram showing an example of the configuration of the support device and the seismic isolation scaffold in A to C of FIG. 3 when viewed from the front direction. 5A and 5B are views showing an example of a connecting structure of the upper linear member and the end portion of the lower linear member of the brace. FIG. 6A is a diagram showing an example of the structure of the lower part of the column, and FIG. 6B is a diagram showing an example of the structure of the upper part of the column. 7A and 7B are views showing a state in which the connecting members of both the support device and the scaffolding body are made into elastic bodies (coil springs). FIG. 8 is a diagram showing a state in which the cushioning mechanisms of both the support device and the scaffolding body are made into elastic bodies (coil springs).

In the connecting member of the present invention, it is preferable that the elastic member is made of an elastic body. However, in the present invention, the structure of the telescopic member is not limited, and other structures may be used.

In the connecting member of the present invention, it is preferable that the expansion / contraction limiting member is a pin member that limits the expansion / contraction of the expansion / contraction member, and when the strength exceeds the set strength, the pin member breaks and the restriction is released.

In the connecting member of the present invention, the expansion / contraction limiting member is a pin member that limits the expansion / contraction of the expansion / contraction member, and when the set strength is exceeded, the pin member is disengaged from the expansion / contraction member and the restriction is released. Is preferable.

In the connecting member of the present invention, it is preferable that the connecting portion main body is rotatable around the structure connecting portion.

In the connecting member of the present invention, it is preferable that the connecting portion main body is rotatable around the temporary structure connecting portion.

In the connecting member of the present invention, it is preferable that the structure is a seismic isolation structure.

In the seismic isolation scaffold of the present invention, it is preferable that the external temporary structure includes a support device and a scaffold body, and the scaffold body is mounted on the support device.

In the seismic isolation scaffold of the present invention, the support device includes a support plate, a plurality of columns, a ground fixing member, a connecting elastic body, and a connecting member, and the support plate has the external temporary structure on the upper surface thereof. A body can be placed and supported, and the upper end portions of the plurality of columns are connected to the lower surface of the support plate via the connecting elastic body, and the lower end portions of the plurality of columns are connected to each other. It is preferable that the support plate is connected to the ground fixing member via an elastic body, and the support plate can be connected to the structure by the connecting member.

In the seismic isolation scaffold of the present invention, the support device further includes a brace, one end of the brace is connected to the upper end of the strut, and the other end of the brace is the lower end of the strut adjacent to the strut. It is preferable that the brace is deformable according to a change in the diagonal distance between the adjacent columns.

The brace is preferably one in which the ends of the two linear members are connected in a rotatable state. However, the structure of the brace is not limited in the present invention, and other structures may be used.

In the seismic isolation scaffold of the present invention, the connecting elastic body is preferably, for example, a spring. In the present invention, the connecting elastic body is not limited to the spring, and may be another elastic body such as rubber or the like.

In the seismic isolation scaffold of the present invention, the scaffolding body is mounted on the support plate in the support device, and the support device is connected to the structure by the connecting member, whereby the structure is connected. It is preferable that it can move in conjunction with the movement.

In the seismic isolation scaffold of the present invention, it is preferable that the scaffold body can be connected and fixed to the seismic isolation structure by the connecting member.

In the seismic isolation scaffold of the present invention, it is preferable that the structure is a seismic isolation structure.

It is preferable that at least one of the connecting members for connecting and fixing the support device and the scaffolding body to the structure is an elastic body. As the elastic body, rubber, a coil spring and the like are preferable.

In the present invention, the "seismic isolation scaffold" means a scaffold including a seismic isolation device. Generally, temporary scaffolding is installed on the ground. Further, in order to prevent the temporary scaffold from collapsing, the temporary scaffold and the main body of the building (structure) are tied (combined) at appropriate places. For this reason, the temporary scaffolding receives seismic force from both the ground and the building during an earthquake. Therefore, the seismic force received by the temporary scaffolding can be reduced by arranging the seismic isolation device at an appropriate place such as the joint portion between the ground and the temporary scaffolding and the joint portion between the building body and the temporary scaffolding. As described above, the seismic isolation scaffold of the present invention includes the connecting member of the present invention, and the connecting member of the present invention corresponds to the seismic isolation device. Further, the seismic isolation scaffold of the present invention may include a seismic isolation device other than the connecting member of the present invention.

Next, the present invention will be described with reference to an example. However, the present invention is not limited by the following description. 1 to 8 show an example of the connecting member of the present invention and an example of a seismic isolation scaffold using the connecting member. In FIGS. 1 to 8, the same parts are designated by the same reference numerals.

FIG. 1 is a diagram showing an example of the configuration of the seismic isolation scaffold of the present invention when viewed from the side direction. As shown in the figure, this seismic isolation scaffold is composed of a connecting member 16 and a temporary scaffold (external temporary structure) 10. The temporary scaffold 10 is connected to the building (structure) 3 by the connecting member 16. The temporary scaffolding 10 and the building 3 are fixed to the ground 5, respectively.

A to C of FIG. 2 are views showing a case where the connecting member 16 is viewed from above in FIG. 1. A indicates a state in which the building 3 is not shaken. B and C indicate the case where the shaking strength of the building 3 exceeds the preset strength. B indicates a state in which the building 3 sways upward in the drawing as shown by an arrow, and C indicates a state in which the building 3 sways downward in the drawing as shown by an arrow.

As shown in the drawing, the connecting member 16 is composed of a buffer mechanism portion (connecting portion main body) 16E, a temporary structure connecting portion 16B, and a structure connecting portion 16C. The cushioning mechanism portion 16E is composed of an expansion / contraction member 16A and an expansion / contraction limiting member (pin member) 16D. The telescopic member 16A is formed of an external temporary structure side member 16A1 and a structure side member 16A2. The external temporary structure side member 16A1 has a tubular shape. The structure side member 16A2 has a rod shape. A part of the structure side member 16A2 is inserted into the external temporary structure side member 16A1. One end of the external temporary structure side member 16A1 on the opposite side of the structure side member 16A2 is connected to the temporary scaffold 10 by the temporary structure connecting portion 16B. The external temporary structure side member 16A1 is rotatable in the horizontal direction (parallel to the drawing) about the temporary structure connecting portion 16B. The structure side member 16A2 can rotate in the horizontal direction (parallel to the drawing) about the structure connecting portion 16C.

As shown in FIG. 2A, when the building 3 is not shaken, the pin member 16D is inserted into the external temporary structure side member 16A1 and the structure side member 16A2, and the external temporary structure side member 16A1 and the structure side member 16A2 are inserted. It is fixed so that it does not slide (expand and contract). On the other hand, as shown in B and C of FIG. 2, when the horizontal force due to the shaking of the building 3 exceeds the preset set strength, the pin member 16D is broken or the external temporary structure side member 16A1 and the structure side member 16A2. Depart from. As a result, the external temporary structure side member 16A1 and the structure side member 16A2 are released from being fixed and can be slid (expanded and contracted). Then, when the building 3 shakes, the telescopic member 16A expands and contracts due to the sliding of the external temporary structure side member 16A1 and the structure side member 16A2. Further, the external temporary structure side member 16A1 rotates horizontally around the temporary structure connecting portion 16B, and the structure side member 16A2 rotates horizontally about the structure connecting portion 16C. As a result, even if the building 3 shakes, the temporary scaffold 10 hardly shakes, so that the temporary scaffold 10 can be kept horizontal.

In the present invention, the structure of the connecting member is not limited to the structures shown in FIGS. 1 and 2. For example, the structure of the telescopic member included in the connecting member may be different from that in FIGS. 1 and 2. More specifically, for example, as shown in FIGS. 7 and 8 described later, the elastic member may be composed of an elastic body. Further, FIGS. 1 and 2 show an example in which the external temporary structure side member 16A1 and the structure side member 16A2 can rotate in the horizontal direction about the temporary structure connecting portion 16B or the structure connecting portion 16C, respectively. It was. However, in the present invention, the direction in which the connecting portion main body can rotate about the structure connecting portion or the temporary structure connecting portion is not limited to the horizontal direction, and may be rotatable in the vertical direction, for example. It may be rotatable in both the horizontal and vertical directions, or it may be rotatable in any direction.

Further, FIGS. 1 and 2 show a case where the temporary scaffolding 10 and the building 3 do not have a seismic isolation structure. However, the present invention is not limited to this, and the temporary scaffold may have a seismic isolation structure even if it is not a seismic isolation structure, and the building (structure) may have a seismic isolation structure even if it is not a seismic isolation structure. You may.

3 to 6 show an example in which the temporary scaffolding 10 and the building 3 have a seismic isolation structure. 3 to 6, the configuration and function of each part of the connecting member 16 are the same as those in FIG. 2, although not shown.

3A to 3C are views of a seismic isolation scaffold (external temporary structure) 10 having the scaffolding body 2 mounted on the support device 1 installed on the seismic isolation structure (building) 3 from the side view. 4A to 4C are views viewed from the front. In FIGS. 3 and 4, A indicates a state in which the seismic isolation structure 3 does not sway, and B indicates a state in which the seismic isolation structure 3 sways to the left in the drawing as shown by an arrow. Indicates a state in which the seismic isolation structure 3 sways to the right in the drawing as shown by an arrow. As shown in FIGS. 3A to 3C, the seismic isolation structure 3 is arranged on the seismic isolation device 4, and the seismic isolation device 4 can mitigate the shaking of the earthquake.

As shown in FIGS. 3 and 4, the support device 1 includes a support plate 11, a plurality of columns 12, a ground fixing member 13, a spring (connecting elastic body) 14, a brace 15, and a connecting member 16. It is composed of. The scaffolding body 2 is placed on the upper surface of the support plate 11 to support it. Each upper end portion of each of the plurality of columns 12 is connected to the lower surface of the support plate 11 via the spring 14. Each lower end of each of the plurality of columns 12 is connected to the ground fixing member 13 via the spring 14. The ground fixing member 13 is fixed to the ground 5. Further, the support plate 11 is connected and fixed to the seismic isolation structure 3 by the connecting member 16 on its side portion. Similarly, the scaffolding body 2 is also connected and fixed to the seismic isolation structure 3 by the connecting member 16.

One end of the brace 15 is connected to the upper end of the brace 12, and the other end of the brace 15 is connected to the lower end of the brace 12 adjacent to the brace 12 in a crossed state by the two brace 15. , Two adjacent columns 12 are connected. As shown in FIG. 5, the brace 15 is formed by connecting the ends of the upper linear member 15A and the lower linear member 15B in a state in which they can be rotated by a pin 18, and the brace 15 has the structure. Reference numeral 15 can be deformed according to a change in the diagonal distance between the adjacent columns 12. FIG. 5A shows a state in which the upper linear member 15A and the lower linear member 15B are bent, and FIG. 5B shows a state in which the upper linear member 15A and the lower linear member 15B are linear.

As shown in FIGS. 3 and 4, between the two adjacent columns 12, the upper ends are connected to each other by the column connecting tool 17A, the central portions are connected to each other by the supporting column connecting tool 17C, and the lower ends are connected to each other. , It is connected by the support column connecting tool 17B.

FIG. 6 is a diagram showing the structure of the upper end portion of the support column 12 and the lower end portion of the support column 12 in a state where the seismic isolation structure 3 is swayed to the left in the drawing, as shown in FIG. 3B. As shown in FIG. 6A, the end of the support column connecting tool 17B and the end of the lower linear member 15B of the brace 15 are connected to the plate material at the lower end of the support column 12 in a state in which the pin 18 can rotate. Further, as shown in FIG. 6B, the end portion of the strut connecting tool 17A and the end portion of the upper linear member 15A of the brace 15 are connected to the plate material at the upper end portion of the strut 12 in a state in which the pin 18 can rotate. There is. Further, although not shown in FIG. 6, the strut connecting tool 17C is rotatably connected to the central portion of the strut 12 by a pin. As shown in FIGS. 6A and 6B, when the seismic isolation structure 3 sways, the spring 14 is deformed according to the swaying direction and the support column 12 is tilted, and the brace 15 is formed according to the tilt of the support column 12. It can be deformed, and the support columns 17A to C can also correspond to the inclination of the support column 12.

As shown in FIGS. 3B and C and 4B and C, when the seismic isolation structure 3 shakes during an earthquake, the support device 1 of the present invention deforms in conjunction with the shaking of the seismic isolation structure 3. Since the scaffolding body 2 can also move in conjunction with the shaking of the seismic isolation structure 3, the scaffolding is not broken and is safe.

Next, FIGS. 7 and 8 show an example in which the elastic member in the connecting member of the present invention is made of an elastic body. In FIGS. 7 and 8, the support device 1 and the scaffolding body 2 are connected and fixed to the seismic isolation structure 3 by a telescopic member 161 of a coil spring (elastic body). The telescopic member 161 is a part of the connecting member of the present invention. In the connecting member of FIGS. 7 and 8, the main body of the connecting portion is composed of a cushioning mechanism portion including the expansion / contraction member 161 and the expansion / contraction limiting member 162. The telescopic member 161 is connected to the seismic isolation structure 3 as described above by a structure connecting portion (not shown) arranged at one end thereof. Further, the telescopic member 161 is connected to the temporary scaffold 10 by a temporary structure connecting portion (not shown) arranged at the other end. When the shaking strength of the seismic isolation structure 3 is equal to or less than the preset strength, the expansion / contraction member 161 is restricted from expansion / contraction by the attached expansion / contraction limiting member 162. When the shaking strength of the seismic isolation structure 3 exceeds the set strength, the expansion / contraction limiting member 162 is broken or detached from the expansion / contraction member 161 to release the expansion / contraction restriction of the expansion / contraction member 161. Can be expanded and contracted. Further, since the telescopic member 161 is a coil spring, it can be expanded and contracted not only in the horizontal direction but also in the vertical direction and any other direction. As a result, even if the seismic isolation structure 3 shakes, the temporary scaffold 10 hardly shakes, so that the temporary scaffold 10 can be kept horizontal.

FIG. 7A is the same as FIG. 3A except for the connecting member, and FIG. 7B is the same as FIG. 6B except for the connecting member. FIG. 8 is a diagram showing the entire state in which both the support device 1 and the scaffolding body 2 are connected and fixed to the seismic isolated building (seismic isolation structure) 3 by a coil spring (connecting member) 161. As shown in FIGS. 7 and 8, if the support device 1 and the scaffolding body 2 are connected and fixed to the seismic isolation structure 3 by the coil spring (connecting member) 161, an earthquake occurs and seismic isolation occurs as described above. Even if the structure 3 shakes greatly, the horizontal acceleration of the seismic isolation structure 3 can be reduced by the same principle as the shock absorber of an automobile, and it is possible to prevent people and materials from falling from the scaffolding body 2. It will be possible.

The case where the external temporary structure is a temporary scaffold has been described above with respect to the present invention. However, the present invention is not limited to scaffolding, and can be applied to other external temporary structures. Further, in the embodiment of the present invention, for example, the spring support structure can be used as a stand capable of stable measurement and photographing by installing a measuring device or a photographing device in a place where vertical movement is constantly occurring. Is.

As described above, according to the connecting member and the seismic isolation scaffold of the present invention, the temporary scaffold (external temporary structure) is normally firmly fixed to the building body (structure), and the shaking strength due to the earthquake is set in advance. Seismic isolation is possible when the set strength is exceeded. According to the connecting member of the present invention, seismic isolation is possible regardless of whether the external temporary structure is a seismic isolation structure. According to the present invention, for example, in the outer wall repair work of a seismic isolation structure such as a high-rise building and a tower apartment, the scaffolding can also be seismically isolated, so that the safety at the time of an earthquake is excellent. Further, the connecting member and the seismic isolation scaffold of the present invention are not limited to this, and can be applied to a building (structure) having no seismic isolation structure.

1 Support device 2 Scaffolding body 3 Structure 4 Seismic isolation device 5 Ground 10 External temporary structure 11 Support plate 12 Strut 13 Ground fixing member 14 Connecting elastic body (spring)
15 Brace 15A Upper linear member 15B Lower linear member 16 Connecting member 16A Telescopic member 16A1 External temporary structure side member of elastic member 16A2 Structural side member of elastic member 16B Temporary structure connecting part 16C Structure connecting part 16D Expansion and contraction limiting member (Pin member)
16E buffer mechanism (connecting body)
17A, B, C Strut connector 18 pin 161 Telescopic member (elastic body)
162 Expansion and contraction limiting member

Claims (16)

A connecting member for connecting a structure and an external temporary structure for the structure.
The connecting member includes a connecting portion main body, a structure connecting portion, and an external temporary structure connecting portion.
The structure connecting portion is arranged at one end of the connecting portion main body, and the structure connecting portion is arranged.
The temporary structure connecting portion is arranged at the other end of the connecting portion main body, and the temporary structure connecting portion is arranged.
The connecting portion main body includes a shock absorbing mechanism portion.
The cushioning mechanism portion includes an expansion / contraction member and an expansion / contraction limiting member.
The telescopic member can be expanded and contracted in response to the shaking of the structure.
The expansion / contraction limiting member limits the expansion / contraction of the expansion / contraction member when the shaking strength of the structure is equal to or less than a preset set strength, and releases the restriction when the shaking strength exceeds the preset strength. The telescopic member can be expanded and contracted.
Connecting member. The connecting member according to claim 1, wherein the telescopic member is made of an elastic body. The expansion / contraction limiting member is a pin member that limits the expansion / contraction of the expansion / contraction member, and when the set strength is exceeded, the pin member breaks and the restriction is released.
The connecting member according to claim 1 or 2. The expansion / contraction limiting member is a pin member that limits the expansion / contraction of the expansion / contraction member, and when the set strength is exceeded, the pin member is disengaged from the expansion / contraction member and the restriction is released.
The connecting member according to claim 1 or 2. The connecting member according to any one of claims 1 to 4, wherein the connecting portion main body is rotatable about the structure connecting portion. The connecting member according to any one of claims 1 to 5, wherein the connecting portion main body is rotatable about the temporary structure connecting portion. The connecting member according to any one of claims 1 to 6, wherein the structure is a seismic isolation structure. Seismic isolation scaffolding for structures
The connecting member according to any one of claims 1 to 7 and the external temporary structure are included.
A seismic isolation scaffold characterized in that one end of the connecting member is connected to the external temporary structure by the temporary structure connecting portion, and the other end can be connected to the structure by the structure connecting portion. The external temporary structure includes a support device and a scaffold body.
The seismic isolation scaffold according to claim 8, wherein the scaffold body is mounted on the support device. The support device includes a support plate, a plurality of columns, a ground fixing member, a connecting elastic body, and a connecting member.
The support plate can be supported by placing the external temporary structure on the upper surface thereof.
Each upper end portion of each of the plurality of columns is connected to the lower surface of the support plate via the connecting elastic body.
Each lower end of each of the plurality of columns is connected to the ground fixing member via the connecting elastic body.
The seismic isolation scaffold according to claim 9, wherein the support plate can be connected to the structure by the connecting member. The support device further comprises a brace.
One end of the brace is connected to the upper end of the brace, and the other end of the brace is connected to the lower end of the brace adjacent to the brace.
The seismic isolation scaffold according to claim 10, wherein the brace can be deformed according to a change in the diagonal distance between the adjacent columns. The seismic isolation scaffold according to claim 11, wherein the brace is formed by connecting the ends of two linear members in a rotatable state. The seismic isolation scaffold according to any one of claims 10 to 12, wherein the connecting elastic body is a spring. The scaffolding body is mounted on the support plate in the support device.
By connecting the support device to the structure by the connecting member,
The seismic isolation scaffold according to any one of claims 10 to 13, which can move in conjunction with the movement of the structure. The seismic isolation scaffold according to claim 14, wherein the scaffold body can be connected to the structure by the connecting member. The seismic isolation scaffold according to any one of claims 8 to 15, wherein the structure is a seismic isolation structure.

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