JP2024041333A - bearing device - Google Patents

Abstract

[Problem] To maintain functionality even if the bearing device is partially damaged. [Solution] A bearing device that transmits stress in the compression direction between adjacent structural members, comprising: a plurality of female rib plates arranged in parallel with a gap between them; one shoe body having a first attachment plate to which the base ends of the female rib plates are fixed on the front surface and one of the structural members is joined on the back surface; a male rib plate inserted between the female rib plates; the other shoe body having a second attachment plate to which the base ends of the male rib plate are fixed on the front surface and the other of the structural members is joined on the back surface; and a connecting shaft that passes through the female rib plate and the male rib plate, wherein a convex curved surface is formed at the tip of the male rib plate, and a storage section is formed between the parallel arranged female rib plates to store the tip of the male rib plate, and a concave curved surface is formed on the inner surface of the storage section that can come into surface contact with the convex curved surface. [Selected Figure] Figure 4

Description

The present invention relates to a support device that transmits stress in a compressive direction between adjacent structural members.

For example, one type of support device installed between an upper structure and a lower structure of a structure is a shear type pin support device as disclosed in Patent Document 1.

The shear type pin support device 80 generally includes an upper shoe body 81, a lower shoe body 82, and a connecting pin 83, as shown in FIG. The upper shoe body 81 includes a sole plate 811 and a plurality of rib plates 812 provided in a comb shape. Further, the lower shoe body 82 includes a base plate 821 and a plurality of rib plates 822 provided in a comb shape.

The upper shoe body 81 and the lower shoe body 82 are connected by passing a connecting pin 83 through them with their rib plates 812 and 822 engaged, thereby forming the pin support device 80.

Japanese Patent Application Publication No. 2020-139327

If the pin support device 80 described above is used for a long period of time, it may be damaged due to metal fatigue, corrosion, or the like. In particular, if the connecting pin 83 breaks, it may lose its function as a pin joint, leading to the collapse of the structure in which the pin support device 80 is provided.

This was created in view of this problem, and its main purpose is to maintain functionality even if the support device is partially damaged.

In order to achieve such an object, the bearing device of the present invention is a bearing device that transmits stress in a compressive direction between adjacent structural members, and includes a plurality of female side rib plates arranged in parallel at intervals, and a plurality of female side rib plates arranged in parallel at intervals. one shoe body having a first attachment plate to which the proximal end of the rib plate is fixed to the front surface and one of the structural members is joined to the back surface; and a male rib plate inserted between the female rib plate; and the other shoe body having a second mounting plate to which the base end of the male rib plate is fixed to the front surface and to which the other structural member is joined to the back surface, the female rib plate and the male rib plate. a connecting shaft passing through the male rib plate, and a convex curved surface is formed at the tip of the male rib plate, and the tip of the male rib plate is inserted between the female rib plates arranged in parallel. A storage section is formed, and a concave curved surface that can make surface contact with the convex curved surface is formed on the inner surface of the storage section.

The support device of the present invention is characterized in that the storage section is formed by a blocking section that blocks both sides of the base end side of the female rib plate arranged in parallel, and the concave curved surface is formed on the inner surface of each of the blocking sections.

The support device of the present invention is characterized in that the closing portion is a wall that continues from both sides of the female rib plate to the first mounting plate.

The support device of the present invention is characterized in that the first mounting plate and the second mounting plate are each joined to the adjacent structural member at the top of the arch-shaped structure.

The support device of the present invention is characterized in that the first mounting plate and the second mounting plate are each joined to the vertically adjacent structural members.

According to the support device of the present invention, if the connecting shaft is damaged, the tip of the male rib plate will fit into the storage portion, and the concave curved surface of the storage portion will come into contact with the convex curved surface of the male rib plate. Therefore, the function of transmitting stress in the compressive direction between adjacent structural members can be maintained. Therefore, even if a malfunction occurs due to aging or corrosion due to long-term use or an unexpected situation, it is possible to prevent the structure in which the support device is installed from collapsing.

Further, even if one shoe body and the other shoe body are arranged horizontally or vertically, the same function is maintained. Therefore, for example, it is possible to install it between adjacent structural members at the top of an arch-shaped structure or between vertically adjacent structural members.

According to the present invention, even if the support device is partially damaged, such as when the connecting shaft connecting one shoe body and the other shoe body is damaged, the function of transmitting stress in the compression direction can be maintained. becomes possible.

1 is a diagram schematically showing a support device in an embodiment of the present invention. FIG. 3 is a diagram (part 1) showing details of the support device in the embodiment of the present invention. FIG. 2 is a diagram showing details of the support device in the embodiment of the present invention (part 2). FIG. 3 is a diagram showing a support device in a normal state and in an abnormal state according to an embodiment of the present invention. It is a figure showing an example of installation of a support device in an embodiment of the present invention. It is a figure which shows the other example of the support device in embodiment of this invention. It is a figure which shows the conventional shear type pin bearing device.

The present invention relates to a so-called shear type pin support device that connects adjacent structural members with pins and transmits stress in a compressive direction. It can be applied between structural members adjacent in any direction as long as compressive force is applied between structural members, but in this embodiment, the case where the compressive force is installed between structural members adjacent in the left and right direction is used as an example. The details of the supporting device will be explained below.

As shown in FIG. 1(a), the support device 10 includes one shoe body 20, the other shoe body 30, and a connecting shaft 40. For example, as shown in FIG. 1(b), the support device 10 pins adjacent structural members 50 with one shoe 20 placed on the right side of the page and the other shoe 30 placed on the left side of the page. It is joined. In addition, in FIG. 1(b), a case where H-beam steel is adopted for each of the structural members 50 is taken as an example.

As shown in FIGS. 2(a) and 2(b), one shoe body 20 includes a first mounting plate 21, a female rib plate 22, a through hole 23, and a closing portion 24. The first mounting plate 21 has a structural member 50 joined to its back surface, and two female rib plates 22 fixed to its front surface. ,

The female side rib plate 22 is a substantially trapezoidal plate member provided so as to protrude from the first mounting plate 21 . The distal end side is formed in an arc shape, and the proximal end side is fixed to the first attachment plate 21. This female side rib plate 22 is provided with a through hole 23 through which the connecting shaft 40 passes.

As shown in FIG. 2(b), two female rib plates 22 having such a shape are installed in parallel with a certain gap, and a pair of reinforcing members 25 are provided on the outside of each plate. ing. Further, on the proximal end side of the female rib plate 22 and on the opposing inner sides, a closing portion 24 is provided so as to close the gap between the two.

As shown in FIG. 2(b), the closing portion 24 is constituted by a wall that continues from the sides of the two female rib plates 22 to the first mounting plate 21, and its outer surface is as shown in FIG. 1(a). ), it forms the same plane as the side part of the female side rib plate 22. On the other hand, a concave curved surface 241 is formed on its inner surface, as shown in FIG. 2(c).

In this way, as shown in FIGS. 1(a) and 2(c), a storage portion 26 is formed in the space surrounded by the closing portion 24, the two female rib plates 22, and the first mounting plate 21. Ru. The male side rib plate 32 provided on the other shoe body 30 is housed in this housing portion 26 .

The other shoe 30 includes a second mounting plate 31, a male side rib plate 32, and a through hole 33, as shown in FIGS. 2(a) and 2(b). The second mounting plate 31 has a structural member 50 connected to its back surface, and a male rib plate 32 fixed to its front surface.

The male side rib plate 32 is a substantially trapezoidal plate member provided so as to protrude from the second mounting plate 31, and its base end side is fixed to the second mounting plate 31. This male side rib plate 32 is provided with a through hole 33 through which the connecting shaft 40 passes.

Further, as shown in FIG. 2(a), the tip of the male rib plate 32 is formed into a substantially arcuate convex curved surface 321. The concave curved surface 241 formed on the inner surface of the closing portion 24 described with reference to FIG. 2(c) has a shape that allows surface contact with the convex curved surface 321 at the tip.

The one shoe body 20 and the other shoe body 30 having the above-mentioned configuration are connected to each other until the male side rib plate 32 and the female side rib plate 22 are positioned coaxially. Insert the tip between the two female rib plates 22. In this state, by inserting and passing the connecting shaft 40 into the through holes 23 and 33, the one shoe body 20 and the other shoe body 30 are connected, as shown in FIG. Can be assembled.

At this time, as shown in FIG. 3(b), the convex curved surface 321 provided at the tip of the male side rib plate 32 and the concave curved surface 241 provided on the inner surface of the closing portion 24 have a slight interval. They will be facing each other.

As a result, under normal conditions, the support device 10 is able to support one shoe body 20 and the other shoe body 30 when a downward external force acts on adjacent structural members 50, for example, as shown in FIG. 4(a). can be rotated smoothly around the connecting shaft 40. It also has a function of transmitting stress in the compression direction between adjacent structural members 50.

On the other hand, if metal fatigue or corrosion occurs due to long-term use, or an unexpected situation occurs, there is a possibility that the connecting shaft 40 will break. When such an abnormality occurs, one shoe body 20 and the other shoe body 30 are subjected to a compressive force from the adjacent structural member 50, and as shown in FIG. 4(b), the male side rib plate 32 is fitted into the storage portion 26 to be in a fitted state.

The convex curved surface 321 formed at the tip of the male side rib plate 32 comes into contact with the concave curved surface 241 formed on the inner surface of the closing portion 24 . Thereby, the support device 10 can maintain the function of transmitting stress in the compression direction without causing large deformation between adjacent structural members. For this reason, it is possible to prevent the collapse of a structure constituted by adjacent structural members 50 pin-joined by the support device 10 even when an abnormality occurs in the support device 10.

The support device 10 having the above configuration can maintain the same function when an abnormality occurs, even if the one shoe body 20 and the other shoe body 30 are arranged in either the left-right direction or the up-down direction. Therefore, for example, as shown in FIG. 5(a), it may be installed between adjacent structural members 61 at the top of an arch-shaped structure 60, such as a roof or an arch rib of an arch bridge, to transmit compressive axial force. can.

Furthermore, as shown in FIG. 5(b), it is also possible to install it between vertically adjacent structural members, such as between the superstructure 71 and substructure 72 of the bridge 70, to transmit the load. In this way, the bearing device 10 can be installed anywhere between structural members where compressive forces are applied.

The support device 10 of the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.

For example, in this embodiment, as shown in FIG. 1, one shoe body 20 is provided with two female side rib plates 22, and the other shoe body 30 is provided with one male side rib plate 32. was cited as an example. However, if the male rib plates 32 can be inserted between the female rib plates 22 arranged in parallel with a gap, three or more female rib plates 22 and two or more male rib plates 32 can be provided. It may also be a configuration.

Further, the closing portion 24 forming the storage portion 26 is formed on a wall continuous from the side of the female side rib plate 22 to the first mounting plate 21, as shown in FIG. 2(b). However, the shape of the closing portion 24 is not limited to a wall. If it is possible to form the storage part 26 that stores the tip of the male side rib plate 32 and to make the inner surface a concave curved surface 241, for example, it is possible to form a storage part 26 that stores the tip of the male side rib plate 32, and to form a concave curved surface 241 on the inner surface. It may be formed in any way, such as by spanning the sides.

Furthermore, in FIG. 3(b), a convex curved surface is provided at the tip of the male side rib plate 32 in consideration of manufacturing errors that may be expected when one shoe body 20 and the other shoe body 30 are cast products. 321 and a concave curved surface 241 provided on the inner surface of the closing portion 24, a slight interval is provided. However, any manufacturing method may be used.

Therefore, if one shoe body 20 and the other shoe body 30 can be manufactured to such an extent that they can function as a pin joint in a state where they are in contact with each other, the gap may be omitted. If the gap is omitted, when an abnormality occurs as described with reference to FIG. However, the impact caused by a collision can be avoided.

Further, the concave curved surface 241 formed on the inner surface of the closing portion 24 is formed within a range of an internal angle of about 120 degrees in FIG. 2(c), for example, but the range to be set is not limited at all.

Furthermore, in this embodiment, a case where H-shaped steel is employed for the structural member 50 is cited as an example. For this reason, as shown in FIG. 6, the back surface of the first mounting plate 21 constituting one shoe body 20 is selectively carved with a finished surface 211 in the area that contacts the structural member 50. This increases the closeness with the The second mounting plate 31 constituting the other shoe body 30 is also subjected to the same surface treatment.

The range in which such a machined surface 211 is provided may be determined as appropriate depending on the steel material used for the structural member 50. Note that the structural member 50 may be a concrete member, and in this case, the structural member 50 and the first mounting plate 21 may be connected with an anchor.

Further, as shown in FIG. 6, a suspension fitting 212 for locking a wire or the like may be provided on the side peripheral surface of the first mounting plate 21 to facilitate handling during transportation work, installation work, etc. It is preferable that similar configurations be provided for the second mounting plate 31 provided on the other shoe body 30.

10 Support device 20 One shoe body 21 First mounting plate 211 Shaved surface 212 Hanging fitting 22 Female side rib plate 23 Through hole 24 Closing portion 241 Concave curved surface 25 Reinforcement material 26 Storage portion 30 Other shoe body 31 Second shoe body 21 Mounting plate 32 Male side rib plate 321 Convex curved surface 33 Through hole 40 Connection shaft 50 Structural member 60 Structure 61 Structural member 62 Structural member 70 Bridge 71 Superstructure 72 Substructure 80 Pin support device 81 Upper shoe body 811 Sole plate 812 Rib Plate 82 Lower shoe body 821 Base plate 822 Rib plate 83 Connection pin

Claims (5)

A bearing device that transmits stress in a compressive direction between adjacent structural members,
one shoe having a plurality of female side rib plates arranged in parallel at intervals, and a first mounting plate having a proximal end of the female side rib plate fixed to the front surface and to which one of the structural members is joined to the back surface; body and
a male rib plate inserted between the female rib plates, and a second mounting plate having a base end of the male rib plate fixed to the front surface and a second mounting plate to which the other structural member is joined to the back surface; The shoe body and
a connecting shaft passing through the female rib plate and the male rib plate;
Equipped with
A convex curved surface is formed at the tip of the male rib plate, and
A storage part for storing the tip of the male rib plate is formed between the female rib plates arranged in parallel, and a concave curved surface that can make surface contact with the convex curved surface is formed on the inner surface of the storage part. A bearing device characterized in that: The bearing device according to claim 1,
The storage portion is formed by a closing portion that closes each of the proximal side portions of the female rib plate arranged in parallel,
A support device characterized in that the concave curved surface is formed on an inner surface of each of the closing portions. The bearing device according to claim 2,
The support device is characterized in that the closing portion is a wall that continues from both sides of the female rib plate to the first mounting plate. The bearing device according to any one of claims 1 to 3,
A support device characterized in that the first mounting plate and the second mounting plate are each joined to the adjacent structural member at the top of an arch-shaped structure. The bearing device according to any one of claims 1 to 3,
A support device characterized in that the first mounting plate and the second mounting plate are each joined to the vertically adjacent structural member.

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