JP2015045124A - Coupling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coupling device capable of surely bearing a shear force acting on a segment into which a male side joint is buried and a segment into which a female side joint is buried, and allowing downsizing and weight saving of the whole device.SOLUTION: A large diameter part (3) is formed in a longitudinal central part of a male side bolt (10). The large diameter part (3) is formed at a position which becomes a boundary between a segment (SM1) provided with the male side joint (10) and a segment (SM2) provided with a female side joint (20), when the male side joint (10) and the female side joint (20) are connected with each other. The large diameter part (3) includes a cover-shaped member (front cover 18) engaging with a male side end (112) of a casing (11) of the female side joint (20). An aseismic base isolation material (16) is provided on a female side of the cover-shaped member (18), and a taper ring (17) is provided on a male side of the aseismic base isolation material (16).

Description

  The present invention relates to a coupling device used, for example, for coupling tunnel segments. More specifically, the present invention has a male metal fitting and a female metal fitting, and a male metal fitting or a female metal fitting is attached to each member to be fastened (for example, a structure such as a tunnel segment). The present invention relates to a coupling device that couples or fastens a member provided with a male metal fitting and a member provided with a female metal fitting by inserting the male metal fitting into the female metal fitting.

When joining a tunnel segment, a joining device that can securely join members to be fastened (for example, a structure like a tunnel segment) by simply inserting a male fitting into a female fitting. desired.
The applicant previously provided with a lid-like member that engages with the male end of the casing, and a through-hole into which the male-side bolt is inserted is formed radially inward of the lid-like member, and A male screw is formed on the outer peripheral surface, a female screw is formed on the inner peripheral surface of the male end of the casing, and a male screw formed on the outer peripheral surface of the lid-like member is formed on the inner peripheral surface of the male end of the casing. A coupling device that is screwed into the female thread is proposed (see Patent Document 1).

Such a coupling device is useful, but the shearing force that acts on the boundary between the segment with the male joint embedded and the segment with the female joint embedded is the shaft that forms the annular projection of the male bolt. I bear it. Therefore, unless the axial dimension of the bolt is increased, the shearing force acting between the segments cannot be borne, the bolt becomes thicker, and it is difficult to downsize the male side joint and the female side joint. Has the problem.
In addition, the female joint embedded in the segment, particularly the concrete segment, may rotate.
Furthermore, although it is possible to provide a seismic isolation material in such a coupling device, the seismic isolation material may move (is deviated) from a predetermined position.

Japanese Patent No. 5082070

  The present invention has been proposed in view of the above-described problems of the prior art, and it is possible to reliably bear the shearing force acting on the boundary between the segment in which the male side joint is embedded and the segment in which the female side joint is embedded. It is possible to reduce the size and weight of the entire device, and to provide a coupling device that can prevent the joint from rotating with respect to the segment and the seismic isolation material from deviating from a predetermined position. Yes.

In the coupling device of the present invention, a male side joint (10, 30) and a female side joint (20) are provided in each of the segments to be fastened (for example, the segments SM1 and SM2 for tunnels). The female side joint (20) includes a casing (11) and a plurality of female side bolts (12), and is inclined toward the inner peripheral surface in the vicinity of the male side end of the casing (11). A tapered ring (17) having a surface (taper 173) is provided, and an inclined surface (173) on the inner peripheral surface of the tapered ring (17) has a female side bolt (12) in contact with the male side bolt (12). The segment SM1 provided with the male joint 10 is formed so as to move inward in the radial direction when urged to the side separated from the female joint, and the female bolt (12) is arranged in the radial direction. Male bolt by moving inward In 10) and configured coupling device to engage (100),
A large-diameter portion (3) is formed at the longitudinal central portion of the male bolt (10), and the large-diameter portion (3) combines the male-side joint (10) and the female-side joint (20). At this time, the segment (SM1) provided with the male side joint (10, 30) and the segment (SM2) provided with the female side joint (20) are formed at positions that are boundary portions,
A lid-like member (front lid 18) that engages with the male end (112) of the casing (11) of the female joint (20) is provided, and the seismic isolation material (16) is provided on the female side of the lid-like member (18). ), The taper ring (17) is provided on the female side of the seismic isolation material (16), and the male side end of the taper ring (17) is a recess for accommodating the seismic isolation material (16). (175) is formed,
The region of the female side joint (20) on the female side (segment (SM2) side where the female side joint is provided: the side away from the male side joint) of the casing (11) (for example, the anchor portion 111 of the female side joint, return It is characterized in that ribs (118A, 118B) are formed in the region on the female side of the place where the spring 15 is accommodated.

In the coupling device of the present invention, a male side joint (10B) and a female side joint are provided in each of the segments to be fastened (for example, tunnel segments: SM1, SM2), and the male side joint (10B) is a male side bolt (male). The female joint has a casing and a plurality of female bolts (12). An inclined surface (taper 173) is formed on the inner peripheral surface near the male end of the casing. The taper ring (17) is provided, and the inclined surface (173) on the inner peripheral surface of the taper ring (17) has a female side bolt (12) in contact with the male side (segment side on which the male side joint 10B is provided). : Formed so as to move radially inward when biased toward the side separated from the female joint, and the male bolt (12) moves inward in the radial direction. 10B) to engage In made binding device,
An annular projection (3B) is provided at the longitudinal center of the male bolt (10B) (instead of the large diameter portion), and the projection (3B) is connected to the male joint (10B) and the female side. When the joint is joined, it is formed at a position that becomes a boundary between the segment provided with the male joint (10B) and the segment provided with the female joint,
A lid-like member (front lid) that engages with the male end of the casing of the female joint is provided, and a seismic isolation material (16) is provided on the female side of the lid-like member. The taper ring (17) is provided on the female side of the taper, and a concave part (175) for accommodating the seismic isolation material (16) is formed at the male end of the taper ring (17).
From the female housing (segment side where the female joint is provided: the side away from the male joint) of the casing (for example, the portion where the anchor 111 of the female joint and the return spring 15 are accommodated) Also, a rib (118A, 118B) is formed in the female region.

In the coupling device of the present invention, a male joint and a female joint are provided in each of the segments to be fastened (for example, a segment for a tunnel), the male joint includes a male bolt (male pin 10C), and the female joint includes A taper ring (17) having a casing and a plurality of female bolts (12) and having an inclined surface (taper 173) on the inner peripheral surface is provided near the male end of the casing. The inclined surface (173) on the inner peripheral surface of the ring (17) is attached to the male side (segment side where the male side joint is provided: the side away from the female side joint) with the female side bolt (12) in contact therewith. It is configured to move radially inward when energized and is configured to engage the male bolt (10) by moving the female bolt (12) radially inward. In the coupling device,
The shaft part (1C) of the male bolt (10C) is a straight cylinder (in place of the large diameter part or protrusion),
A lid-like member (front lid) that engages with the male end of the casing of the female joint is provided, and a seismic isolation material (16) is provided on the female side of the lid-like member. The taper ring (17) is provided on the female side of the taper, and a concave part (175) for accommodating the seismic isolation material (16) is formed at the male end of the taper ring (17).
From the female housing (segment side where the female joint is provided: the side away from the male joint) of the casing (for example, the portion where the anchor 111 of the female joint and the return spring 15 are accommodated) Also, a rib (118A, 118B) is formed in the female region.

  In the present invention, the lid-like member (front lid 18B) that engages with the male end of the casing (11B) of the female joint (20B) (without the seismic isolation material) is integrated with the tapered ring (17). It is possible to configure.

  In the present invention, the segment may be a concrete segment or a metal segment (for example, a steel segment) SM3 or SM4.

According to the present invention having the above-described configuration, the large-diameter portion (3) is formed in the longitudinal center portion of the male bolt (male pin 10), and the large-diameter portion (3) joins the segments. In this case, the segment (SM1) in which the male joint (30) is embedded and the segment (SM2) in which the female joint (20) is embedded are located at the boundary.
Therefore, when a shear force acts on the boundary between the segment (SM1) in which the male side joint (30) is embedded and the segment (SM2) in which the female side joint (20) is embedded, the shear force has a large cross-sectional area. Since it bears (loads) at the diameter portion (3), it is possible to reliably bear (load) the shearing force.
On the other hand, the shaft portion other than the large-diameter portion (3) of the male-side bolt (10) does not need to add a strong shearing force between the segments, so that the outer diameter can be reduced. Then, by reducing the outer diameter of the male bolt (10) other than the large diameter portion (3), the female joint (20) and the male joint (10, 30) can be reduced in size and weight. As a result, the entire apparatus can be reduced in size and weight.

  Further, according to the present invention, the female side joint (20) has a region on the female side (side away from the male side joint) of the casing (11) (more specifically, the anchor portion 111 and the return spring 15 of the female side joint are provided). Since the ribs (118A, 118B) are formed in the female side of the housed portion), the female side joint (20 or the casing 11) is placed in the concrete segment (SM2) (longitudinal central axis C). If the rib (118A) is in contact with the solidified concrete, the rotation is prevented. Therefore, the female side joint (20) does not perform so-called “idle rotation” with respect to the concrete segment (SM2).

Furthermore, according to the present invention, in the female joint (20), the taper ring (17) sandwiching the lid member (18) and the seismic isolation material (16) has its male side (male side joint embedded). A recess (175) is formed on the end surface of the segment, and the seismic isolation material (16) is accommodated in the recess (175).
According to the taper ring (17), a step is formed between the concave portion (175) on the male end face and the other portion, and the seismic isolation material (16) is positioned by the step. At the same time, even if the seismic isolation material (16) tries to move (uneven), the movement (unevenness) is prevented by the peripheral edge of the seismic isolation material (16) coming into contact with the stepped portion. As a result, the movement (unevenness) of the seismic isolation material (16) is prevented.

It is a side view of the male side joint in a 1st embodiment. It is a side view of the female side joint in a 1st embodiment. It is a partial cross section side view which shows the state which the female side coupling and male side coupling of 1st Embodiment couple | bonded. It is a side view which shows the casing of the female side joint of FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4. It is side surface sectional drawing of the taper ring used in 1st Embodiment. It is a cross-sectional side view which shows the state which attached the seismic isolation material to the taper ring of FIG. It is a side view which shows the problem in the taper ring of a prior art. It is a cross-sectional side view which shows the modification of the taper ring of FIG. It is a cross-sectional side view of the cover member used by 1st Embodiment. It is a partial cross section side view which shows the state which inserted the male pin in the cover member of FIG. It is a partial cross section side view which shows the state which engaged the cover member with the female side coupling. It is a side view of the male pin used in 1st Embodiment. It is a front view of the male pin of FIG. It is a cross-sectional side view of the tool for screwing the male pin of FIG. 14 to the male side joint embedding insert. It is a structural member of the tool of FIG. 16, and is a Y arrow view of FIG. FIG. 17 is a cross-sectional front view showing a state in which the male pin of FIG. 14 is screwed into the male side joint embedded insert using the tool of FIG. 16. It is a partial cross section side view which shows 2nd Embodiment of this invention. It is a partial cross section side view of the female type | mold joint used in 3rd Embodiment of this invention. It is a section side view showing the lid member used in a 3rd embodiment. It is a partial cross section side view which shows the state which inserted the male pin in the cover member of FIG. It is a side view of the male pin used in 4th Embodiment of this invention. It is a front view which shows the tool for fastening the male pin of FIG. 23, and the said male pin. It is a side view of the male pin used in 5th Embodiment of this invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, the coupling device according to the first embodiment of the present invention will be described with reference to FIGS.
3 includes a male-side bolt (hereinafter referred to as “male pin”) 10 and a female-side joint 20.

In FIG. 1, a male pin 10 is engaged (threaded) with a female screw 31 formed on an embedded member (hereinafter referred to as {insert}) 30 by a male screw 7 formed on the male pin 10. Here, the insert 30 is embedded in the first segment SM1 so that the end surface (left end surface in FIG. 1) is located on the coupling surface Fs1 side of the first segment SM1 that is the coupled member.
In order to avoid interference with the large-diameter portion 3 of the male pin 10, a region 32 having a large inner diameter is formed on the coupling surface Fs <b> 1 side of the insert 30.

The details of the male pin 10 are shown in FIG. In FIG. 14, the male pin 10 has a first shaft portion 1, a second shaft portion 2, and a large diameter portion 3.
The first shaft portion 1 is formed with a male screw 4 for coupling, and the tip 5 (left end in FIG. 14) of the male screw 4 has a partial truncated cone shape. A groove 6 (see FIG. 15) is formed in the tip 5 so as to pass through the shaft center.
The groove 6 is used for engaging the insertion plate portion t2 of the tool T shown in FIGS. 16 and 17 with the groove. The tool T will be described later.
In FIG. 14, a male screw 7 is formed on the second shaft portion 2 of the male pin 10.

In FIG. 2, the female joint 20 includes a casing 11, a plurality of female bolts 12, a guide plate 13, a spring seat 14, a coil spring 15, a seismic isolation material 6, a taper ring 17, and a lid shape. A member (hereinafter referred to as “front lid”) 18 is provided.
The casing 11 is embedded in the second segment SM2 so that the end surface (the right end surface in FIG. 2) is located on the coupling surface Fs2 side of the second segment SM2 that is the coupled member.

  As shown in FIG. 4, the casing 11 includes a solid shaft portion 110, an anchor portion 111 that is an end portion (left end portion in FIG. 4) of the solid shaft portion 110, and the coupling surface Fs2 side (see FIG. 2: FIG. 4, an end surface 112 on the right side, a cylindrical portion 113 that forms a storage chamber 117 for a plurality of female bolts 12 (see FIG. 2: not shown in FIG. 4), a solid shaft portion 110, and a cylindrical portion 113. A tapered portion 114 to be connected is provided.

An internal thread 115 t is formed in an opening 115 (hereinafter referred to as “front lid engaging portion”) 115 on the end surface 112 side (right side in FIG. 4) of the cylindrical portion 113.
A storage chamber 116 and a storage chamber 117 are formed on the anchor portion 111 side (left side in FIG. 4) with respect to the front lid engaging portion 115. In the storage chamber 116, a tapered ring 17 (see FIG. 2; not shown in FIG. 4) is stored. The storage chamber 117 is formed closer to the anchor portion 111 (left side in FIG. 4) than the storage chamber 116, and the storage chamber of the coil spring 15 and the plurality of female bolts 12 (see FIG. 2; not shown in FIG. 4). 117 is formed.

In the anchor portion 111, ribs 118A extending in parallel with the central axis Lc of the casing 11 are formed at two locations (see FIG. 5).
And the rib 118B extended in parallel with the central axis Lc of the casing 11 is formed in the taper part 114 at two places (refer FIG. 5).
By forming the ribs 118A and 118B shown in FIGS. 4 to 6, it is possible to suppress the female joint 20 (or the casing 11) from rotating about the central axis Lc of the casing 11 in the concrete segment SM2. Is done. As a result, the female joint 20 (or the casing 11) is prevented from so-called “free running” in the concrete segment SM2.

  In FIG. 4, annular protrusions 119 are formed at, for example, three locations on the outer periphery of the solid shaft portion 110 in the casing 11. By providing the protrusion 119, the casing 11 (female side joint 20 as a whole) is restrained from moving along the central axis Lc in the concrete segment SM2 (see FIG. 3). As a result, when an external force that moves the concrete segments SM1 and SM2 in the direction of the central axis Lc is applied, the female side joint 20 (or the casing 11) is suppressed from being pulled out from the concrete segment SM2. .

As shown in FIG. 7, the taper ring 17 is configured in a substantially annular shape. A region 171 (straight inner periphery) having a constant inner diameter and a taper portion 173 are formed on the inner peripheral surface of the taper ring 17. Here, as the taper portion 173 progresses from one end surface 172 side (left side in FIG. 7) of the taper ring 17 to the opposite end surface 174 side (right side in FIG. 7), the inner diameter size becomes smaller (the diameter is reduced). ) Is formed.
A concave portion 175 having a circular cross section is formed on the other end surface 174 side (right side in FIG. 7) of the taper ring 17. As shown in FIG. 8, a seismic isolation material (for example, earthquake resistant rubber) 16 is accommodated in the recess 175.

Here, in the prior art, as shown in FIG. 9, a seismic isolation material (not shown) is disposed on the end surface 174J on the male joint side (the right side in FIG. 9) of the taper ring 17J. However, as shown by the arrow Y, the seismic isolation material (not shown) may be deviated in the vertical direction in FIG.
As shown in FIG. 8, in the taper ring 17 used in the first embodiment, since the seismic isolation material is accommodated in the recess 175, the seismic isolation material 16 is prevented from moving as shown in FIG. Is done.

FIG. 10 shows a taper ring 17A of a type different from the taper ring 17 shown in FIGS.
As described above, a region 171 having a constant inner diameter is formed on the inner peripheral surface of the taper ring 17 shown in FIGS. On the other hand, only the taper portion 173 is formed on the inner peripheral surface of the taper ring 17A shown in FIG. 10, and no “region having a constant inner diameter” is formed (there is no straight inner peripheral portion). . In the taper ring 17A shown in FIG. 10, an edge W is formed on the inner peripheral surface side on the side (the right side in FIG. 10) where the recess 175 for accommodating the seismic isolation material is formed.
Other configurations and operational effects of the modified example 17A of the tapered ring in FIG. 10 are the same as those of the tapered ring 17 in FIGS.

The front lid 18 is disposed at the opening side end of the casing 11 of the female side joint 20 (the right end in FIGS. 2, 4, and 13).
As shown in FIG. 11, a male screw 180 t is formed over the entire outer periphery 180 of the front lid 18.
A region 184 having an inner diameter larger than the inner diameter of the inner periphery 182 other than the vicinity of the casing 11 opening side is formed in the vicinity of the casing 11 opening side (right side in FIG. 11) of the inner periphery 182 of the front lid 18. The region 184 has such a shape that the large-diameter portion 3 of the male pin 10 is engaged (accommodated) when the male pin 10 is inserted into the female joint 20.

A pair of holes 186 (blind holes) are formed on the end surface of the front lid 18 on the opening side of the casing 11 (right side in FIG. 11) at a position symmetrical to the center point of the front lid 18. The pair of holes 186 are formed to insert a pair of protrusions of a tool (not shown). In order to attach the front lid 18 to the front lid engaging portion 115 (see FIG. 4) of the casing 11, a female screw 115t formed on the front lid engaging portion 115 (see FIG. 4) and a male screw on the outer periphery 180 of the front lid 18 are used. 180t must be screwed with a tool (not shown). The tool (not shown) is a tool used for screwing the male screw 180t of the front lid 18 with the female screw 115t of the front lid engaging portion 115 (see FIG. 4).
A state in which the male pin 10 is inserted into the front lid 18 is shown in FIG. And the state which attached the front cover 18 to the female side joint 20 is shown by FIG.

In FIG. 13, a coil spring 15 and a female bolt 12 are housed in the housing chamber 117 of the casing 11.
When the female side joint 20 is assembled, the coil spring 15 is first inserted, and then the plurality of female side bolts 12 supported by the spring seat 14 and the guide plate 13 are inserted.
After the plurality of female bolts 12 supported by the guide plate 13 are inserted, the taper ring 17 and the seismic isolation material 16 are sequentially inserted into the casing 11. Then, the front lid 18 is screwed into the front lid engaging portion 115 of the casing 11 by the above-described dedicated tool (not shown).

A plurality of female-side bolts 12 are provided in the female-side joint 20, and the plurality of female-side bolts 12 are urged to a side (right side in FIG. 13) pressed against the taper ring 17 by the coil spring 15. The taper ring 17 is formed with a taper 173 (see FIGS. 7, 8, and 10) so that when the plurality of female bolts 12 are pressed against the taper ring 17 by the coil spring 15, the taper 173 is directed radially inward. ing.
Therefore, when the male pin 10 is inserted into the female joint 20 as shown in FIG. 1, the plurality of female bolts 12 are urged radially inward, and the thread of the female bolt 12 is male. Engage with the thread of the pin 10. As a result, the plurality of female-side bolts 12 are engaged with the male pin 10, and the male pin 10 cannot be pulled out from the female-side joint 20.
Even when a change occurs in the axial direction between the segment SM1 and the segment SM2 due to an external force such as an earthquake, the biasing by the coil spring 15 and the presence of the taper portion 173 of the taper ring 17 sufficiently follow the change. can do.

In FIG. 14, a large-diameter portion 3 is provided at the center in the longitudinal direction of the male pin 10. The large-diameter portion 3 is set so as to be positioned at the joining portion of the segments SM1 and SM2 when the segments SM1 and SM2 are joined in the tunnel longitudinal direction. For this reason, the large-diameter portion 3 is subjected to the shearing force of the joined portions of the joined segments SM1 and SM2. That is, in the male pin 10, the large-diameter portion 3 having a large cross-sectional area is responsible for the shearing force acting between the segments SM1 and SM2.
Since the large-diameter portion 3 is responsible for the shearing force, the male pin 10 bears the shearing force due to the large cross-sectional area of the large-diameter portion 3, and the shearing force that can be loaded by the male pin 10 increases.
On the other hand, the cross-sectional area of the male pin 10 that does not receive the shearing force can be reduced. In other words, the male pin 10 other than the large diameter portion 3 can be designed to have a small diameter, and the female side joint can be reduced in size and weight.

As described above, the groove 6 is formed at the tip 5 of the first shaft portion 1 of the male pin 10.
When joining the concrete segments SM1 and SM2, it is necessary to attach the male pin 10 to the insert 30 embedded in the concrete segment SM1. In order to attach the male pin 10 to the concrete segment SM1, the male pin 10 is screwed into the female screw 31 of the concrete segment SM1. At that time, a groove 6 shown in FIG. 15 is provided to rotate the male pin 10. That is, the groove 6 is formed to rotate the male pin 10.

16 and 17, a tool T for rotating the male pin 10 with respect to the insert 30 (see FIG. 1) embedded in the concrete segment SM1 is shown.
As shown in FIG. 16, the tool T for rotating the male pin 10 with respect to the insert 30 (see FIG. 1) includes a cylindrical member t1, a rectangular steel plate t2, and a handle t3.
The thickness dimension of the steel plate t2 (dimension in the direction perpendicular to the paper surface of FIG. 16) is set to a dimension that can be engaged with the groove 6 (see FIGS. 15 and 16) formed at the end of the male pin 10. Yes. In other words, the thickness dimension of the steel plate t2 is set slightly smaller than the width dimension of the groove 6 (dimension in the left-right direction in FIG. 15).
The cylindrical member t1 is formed of, for example, a steel pipe, and the inner peripheral surface is a smooth surface. The inner diameter of the cylindrical member t <b> 1 is set slightly larger than the outer diameter of the male screw 4 of the male pin 10.
As shown in FIG. 17, a groove t1g is formed at the end of the cylindrical member t1 on the handle t3 side (left side in FIG. 17). The groove t1g is provided for attaching the steel plate t2.

When the male pin 10 is attached to the female screw 31 of the insert 30 embedded in the concrete segment SM1, the steel plate t2 of the tool T is engaged with the groove 6 at the tip of the male pin 10 as shown in FIG. Thus, the first shaft portion 1 of the male pin 10 is inserted into the cylindrical member t1 of the tool T.
Then, the male screw 7 of the second shaft portion 2 of the male pin 10 is screwed into the female screw 31 of the insert 30 embedded in the concrete segment SM1, and the tool T is rotated so that the large-diameter portion 3 of the male pin 10 is The insert 30 is screwed until it comes into contact with the step 32s of the region 32 (region with a large inner diameter) on the opening side (left side in FIG. 18).

  In FIG. 1 to FIG. 18, as the seismic isolation material 16, for example, seismic rubber can be used. A washer, a countersunk spring for a hexagon socket head bolt, etc.) can be used.

According to the illustrated first embodiment, when the segments SM1 and SM2 are joined, the large-diameter portion 3 at the center in the longitudinal direction of the male pin 10 has the segment SM1 in which the insert 30 is embedded and the female side joint 20 embedded. Located at the boundary of the segment SM2.
Therefore, when a shearing force acts on the boundary between the segment SM1 and the segment SM2, the shearing force is borne by the large-diameter portion 3 having a large cross-sectional area, so that the shearing force can be reliably borne by the pin 10 that pushes the shearing force. .
On the other hand, since the strong shear force between segments does not act on shaft parts other than the said large diameter part 3 of the male pin 10, the outer diameter can be made small. Then, by reducing the outer diameter dimensions of the male pin 10 other than the large-diameter portion 3, the radial dimensions of the female side joint 20 and the male side joint (10, 30) are reduced, and the overall size and weight are reduced. Can be realized. As a result, the entire apparatus can be reduced in size and weight.

  Further, according to the illustrated first embodiment, since the ribs 118A and 118B are formed in the casing 11 of the female side joint 20, the female side joint 20 will be rotated (so-called “idle”) in the concrete segment SM2. Even if an external force is applied, the ribs 118A and 118B are in contact with the solidified concrete, so that the rotation (so-called “idle rotation”) is prevented. For this reason, the female side joint 20 is prevented from so-called “idle” with respect to the concrete segment SM2.

Further, in the female side joint 20 according to the first embodiment shown in the figure, and even if a variation occurs in the shear direction between the segment SM1 and the segment SM2 due to an earthquake or the like, the seismic isolation material 16 is deformed in the shear direction, so The function of the earthquake can be fully demonstrated.
Here, the taper ring 17 holding the seismic isolation material 16 together with the lid member 18 has a concave portion 175 formed on the end surface thereof on the male side (the segment SM1 side where the insert 30 is embedded). A seismic material 16 is accommodated.
Therefore, the seismic isolation material 16 is positioned by the step part of the peripheral part of the recessed part 175 of the taper ring 17, and positioning of the seismic isolation material 16 is performed easily and correctly at the time of an assembly. At the same time, even if an external force that causes the seismic isolation material 16 to move (uneven) acts, the movement (unevenness) is prevented because the seismic isolation material 16 abuts against the step portion of the peripheral portion of the recess 175. As a result, movement (unevenness) of the seismic isolation material 16 is prevented.

FIG. 19 shows a second embodiment of the present invention. In FIG. 19, the whole coupling device according to the second embodiment is represented by reference numeral 100A.
In the first embodiment shown in FIGS. 1 to 18, a female joint 20 including a male joint insert 30 and a casing 11 is attached to concrete segments SM1 and SM2.
On the other hand, in the second embodiment of FIG. 19, the coupling device 100A of the present invention is applied to a so-called “steel segment”.

In FIG. 19, a steel segment SM3 to which the male pin 10 which is a male side joint is attached is a segment in which the entire inside of a box-like member 41 welded with a steel plate 40 is filled with concrete C3.
A through hole 41h through which the large diameter portion 3 of the male pin 10 is inserted is formed in the coupling surface Fs3 of the box-shaped member 41.

  In the steel segment SM3, before the concrete C3 is placed on the box-like member 41, a nut N is fixed inside the through hole 41h (for example, by welding). The nut N is disposed concentrically with the through hole 41 h, and a female screw (not shown) formed on the inner peripheral surface of the nut N is screwed with a male screw 7 formed on the second shaft portion 2 of the male pin 10. Here, a female screw (not shown) of the nut N is formed over the entire axial direction of the nut N, and a through hole is formed in the center of the nut N. A cap CP is put on the side of the nut N that is separated from the steel segment SM4 (the right side in FIG. 19). The cap CP is provided so that the concrete filled in the steel segment SM4 does not enter the through hole of the nut N.

The axial length of the female thread portion of the nut N is set to be longer than the axial length of the second shaft portion 2 (see FIGS. 14 and 18) of the male pin 10.
Concrete C <b> 3 is placed inside the box-shaped member 41. Then, the male pin 10 is attached to the steel segment SM3 formed by placing the concrete C3 using the tool T described in the same manner as in the first embodiment.

  In FIG. 19, in the steel segment SM4 in which the female side joint 20A is embedded, concrete C4 is placed on a box-shaped member 42 made of a steel plate 40. A through hole 42h is formed in the coupling surface Fs4 of the box-shaped member 42, and the large diameter portion 3 of the male pin 10 is engaged with the through hole 42h.

  Also in the steel segment SM4, before the concrete C4 is placed inside the box-shaped member 42, the central axis of the female joint 20A is disposed concentrically with the through hole 42h on the inner side of the through hole 42h. An end face 20Ae on the male joint side (right side in FIG. 19) of the female side joint 20A is fixed to the box-like member 42 (for example, by welding).

As with the first embodiment, the female side joint 20A includes a cylindrical member 11A, a plurality of female side bolts 12, a guide plate 13, a spring seat 14, a coil spring 15, a seismic isolation material 16, and a taper ring. 17 and a front lid 18A.
The end of the cylindrical member 11A on the side separated from the male pin 10 (left side in FIG. 19) has a cap 111A fixed to the inner peripheral surface of the end of the cylindrical member 11A. The hollow portion of the cylindrical member 11A is secured by the cap 111A. It is blocked. This is to prevent the concrete from entering the hollow portion of the cylindrical member 11A when the box-shaped member 42 is filled with concrete.
The hollow portion side (the right side in FIG. 19) of the cap 111 </ b> A functions as a spring seat at one end of the coil spring 15.
Hereinafter, the plurality of female-side bolts 12, the guide plate 13, the spring seat 14, the coil spring 15, the seismic isolation material 16, the taper ring 17, and the front lid 18A are referred to as “joint components”.

  A female side joint 20A in a state where the joint constituent member is incorporated in the cylindrical member 11A (the opening side end of the cylindrical member 11A and the opening of the front lid 18A are on the same plane) is formed in the steel member 42. When welding to the segment inner side of the hole 42h, the female joint 20A is temporarily fixed by a jig (not shown) so as to abut on the segment inner side of the through hole 42h. Although not shown, the jig has a male screw portion that can be inserted into the through-hole 42h and is screwed into a female screw 18At formed on the inner peripheral surface of the front lid 18A. The female side joint 20A is brought into contact with the inside of the segment of the through hole 42h (inside the box-shaped member 42) by screwing into the female screw 18At.

After the female joint 20A is brought into contact with the inside of the segment of the through hole 42h with a dedicated jig, the female side joint 20A is fixed to the inside of the segment of the through hole 42h, for example, by welding.
After the female side joint 20A is fixed to the inside of the segment, concrete C4 is placed in the box-shaped member 42 to constitute the steel segment SM4.

In FIG. 19, the coupling device 100A is applied to a so-called “filled type” steel segment. In the segments CM3 and CM4, concrete is poured into the box-shaped members 41 and 42 formed of steel plates (steel plates) 40. However, it is possible to apply 2nd Embodiment of FIG. 19 with respect to the steel segment into which concrete is not poured.
Other configurations and operational effects in the second embodiment of FIG. 19 are the same as those of the first embodiment of FIGS.

20 to 22 show a third embodiment of the present invention.
While the seismic isolation material 16 is used in the embodiment of FIGS. 1 to 19 (first embodiment and second embodiment), in the third embodiment of FIGS. No seismic isolation material is used.
More specifically, the female side joint (first embodiment) in FIGS. 1 to 18 has a taper ring 17 and a seismic isolation material at the end of the male side joint (right side in FIGS. 2, 3, and 13). 16 and a front lid 18 are provided. On the other hand, as is clear from FIG. 20 which shows the whole of the female side joint of the type that does not use a seismic isolation material, in the female side joint 20B according to the third embodiment, the male side joint side (right side in FIG. 20) end. A front lid 18B is provided at the part, and the front lid 18B is a member in which the taper ring 17 and the front lid 18 in FIGS. 2, 3, and 13 are combined, and no seismic isolation material is provided. The casing 11B also has a shape corresponding to the above contents.

Details of the front lid 18B are shown in FIG. 21, and a state in which the male pin 10 is inserted is shown in FIG.
In FIG. 21, the front lid 18B has a male screw 180Bt formed on the entire outer peripheral surface 180B, and a taper 183B formed on the inner periphery 182B on the side close to the anchor portion 111 (left side in FIG. 21).
Further, a large-diameter portion relief hole 184B (see FIG. 22) for avoiding interference with the large-diameter portion 3 of the male pin 10 is formed on the other end side (right side in FIG. 21) of the inner periphery 182B. .
A pair of tool insertion holes 186 are formed on the open end face (the right end face in FIG. 21) of the female joint 20B in the front lid 18B.

Similarly to the female side joint 20B of FIGS. 20 to 22, a female side joint not provided with a seismic isolation material can be applied to the steel segment.
In that case, a region closer to the anchor than the casing 11B of the female joint 20B (see FIG. 20: a region from the solid shaft portion 110 to the anchor portion 111) is unnecessary.
Other configurations and operational effects in the third embodiment of FIGS. 20 to 22 are the same as those of the first embodiment of FIGS.

23 and 24 show a fourth embodiment of the present invention.
In each embodiment of FIGS. 1-22, the male pin 10 which has the large diameter part 3 as shown in FIG. 14 is used.
On the other hand, in 4th Embodiment, as shown in FIG. 23, the processus | protrusion (stopper) 3B with a semicircular cross section is formed in the longitudinal direction center of the male pin 10B.
This protrusion 3B is located at the boundary between a segment provided with a male side joint (not shown) and a segment provided with a female side joint (not shown) and bears a shearing force acting between the segments.

As shown in FIG. 24, the protrusion 3B of the male pin 10B is formed in a shape in which a part of the ring is cut out. In the protrusion 3B, the part 31B in which the ring is cut out constitutes a so-called “two-sided width”, and has a shape that can be easily engaged with the spanner TS, for example.
When the male pin 10B shown in FIGS. 23 and 24 is screwed into a female screw of a male side joint (not shown), the spanner TS may be engaged with (for example) a notch 31B forming a two-surface width and rotated. .

The male pin 10B shown in FIGS. 23 and 24 is also applicable to both a concrete segment and a steel segment.
And by making the shape of the front lids 18, 18A, 18B complementary to the protrusion 3B, the male pin 10B shown in FIGS. 23 and 24 can be applied to each of the first to third embodiments. is there.
Regarding configurations and operational effects other than those described above, the fourth embodiment of FIGS. 23 and 24 is the same as the embodiment of FIGS.

FIG. 25 shows a fifth embodiment of the present invention.
In FIG. 25, the large-diameter portion and the protrusion are not particularly formed at the center in the longitudinal direction of the male pin 10C, but are formed straight.
A groove 6C similar to the groove 6 described with reference to FIGS. 14 and 15 is formed at the tip 5C on the side close to the female side joint of the male pin 10C in FIG. 25 (left side in FIG. 25).
When the male pin 10C of FIG. 25 is screwed into the female screw of the male side joint, it may be rotated using a tool as shown in FIGS.

The male pin 10C shown in FIG. 25 is also applicable to both a concrete segment and a steel segment.
And if the shape of the front lids 18, 18A, 18B is changed, the male pin 10C shown in FIG. 25 is applicable to the first to fourth embodiments.
Regarding configurations and operational effects other than those described above, the fifth embodiment in FIG. 24 is the same as the embodiment in FIGS.

  It should be noted that the illustrated embodiment is merely an example, and is not a description to limit the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 ... 1st axial part 2 ... 2nd axial part 3 ... Large diameter part 6 ... Groove 10 ... Male pin 11 ... Casing 12 ... Female side volt | bolt 16 .... Seismic isolation material 17 ... taper ring 18 ... front cover 20 ... female joint 30 ... insert

Claims (6)

Each of the segments to be fastened has a male joint and a female joint, the male joint has a male bolt, the female joint has a casing and a plurality of female bolts, and the male end of the casing A tapered ring with an inclined surface formed on the inner peripheral surface is provided in the vicinity, and the inclined surface on the inner peripheral surface of the taper ring is radial if the female bolt abutting on the tapered surface is urged to the male side. In a coupling device configured to move inward and configured to engage the male bolt by moving the female bolt radially inward,
A large-diameter portion is formed in the longitudinal center portion of the male bolt, and the large-diameter portion includes a segment provided with a male joint and a female joint when the male joint and the female joint are joined. It is formed at the position that becomes the boundary of the provided segment,
A lid-like member that engages with the male end of the casing of the female joint is provided. A seismic isolation material is provided on the female side of the lid-like member, and the tapered ring is provided on the female side of the seismic isolation material. The male end of the taper ring is formed with a recess for accommodating the seismic isolation material,
A coupling device, wherein a rib is formed in a female side region of a casing of a female side joint. Each of the segments to be fastened has a male joint and a female joint, the male joint has a male bolt, the female joint has a casing and a plurality of female bolts, and the male end of the casing A tapered ring with an inclined surface formed on the inner peripheral surface is provided in the vicinity, and the inclined surface on the inner peripheral surface of the taper ring is radial if the female bolt abutting on the tapered surface is urged to the male side. In a coupling device configured to move inward and configured to engage the male bolt by moving the female bolt radially inward,
An annular protrusion is provided at the longitudinal center of the male bolt, and the protrusion is provided with a segment having a male joint and a female joint when the male joint and female joint are joined. It is formed at the position that becomes the boundary of the segment,
A lid-like member that engages with the male end of the casing of the female joint is provided. A seismic isolation material is provided on the female side of the lid-like member, and the tapered ring is provided on the female side of the seismic isolation material. The male end of the taper ring is formed with a recess for accommodating the seismic isolation material,
A coupling device, wherein a rib is formed in a female side region of a casing of a female side joint. Each of the segments to be fastened has a male joint and a female joint, the male joint has a male bolt, the female joint has a casing and a plurality of female bolts, and the male end of the casing A tapered ring with an inclined surface formed on the inner peripheral surface is provided in the vicinity, and the inclined surface on the inner peripheral surface of the taper ring is radial if the female bolt abutting on the tapered surface is urged to the male side. In a coupling device configured to move inward and configured to engage the male bolt by moving the female bolt radially inward,
The shaft of the male bolt is a straight cylinder,
A lid-like member that engages with the male end of the casing of the female joint is provided. A seismic isolation material is provided on the female side of the lid-like member, and the tapered ring is provided on the female side of the seismic isolation material. The male end of the taper ring is formed with a recess for accommodating the seismic isolation material,
A coupling device, wherein a rib is formed in a female side region of a casing of a female side joint.   The coupling device according to any one of claims 1 to 3, wherein the lid-like member that engages with the male end of the casing of the female joint is integrally formed with the tapered ring.   The coupling device according to claim 1, wherein the segment is a concrete segment.   The coupling device according to claim 1, wherein the segment is a metal segment.

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