JP2001090485A - Joint construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily joint together such members as segments or the like without performing troublesome work. SOLUTION: A joint fitting 1 is constituted of a male type joint 2 having a joint bar 11 formed with a drawdown portion 15 with the diameter smaller than that of a taper portion 14 at the tip and a female joint fitting 3 having a female joint main body 21 linking the joint bar 11 to be inserted. Inside the housing 23, a pair of linking members 25 to which fitting recessed portions 30 with the diameter almost equal to a drawdown portion 15 of the joint bar 11 at the opposite side are provided. To a slide recessed portion 31 formed at one linking member 25, a slide projected portion 32 formed at the other linking member 25 is fitted and it is made rotatable around fitted portion as the center. A leaf spring 33 for urging in a direction for putting both of the linking members 25 nearer is provided. The joint bar 11 is inserted to the female joint main body 21, the joint bar 11 is clamped by an urging force of the leaf spring 33, the fitted recessed portion 30 is fitted to the drawndown portion 15, the male joint fitting 2 is linked to the female joint fitting 3, and segments S are jointed together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure applied to a joint between segments constituting a tunnel or the like.

[0002]

2. Description of the Related Art As a structure for joining segments constituting a tunnel or the like, for example, bolt insertion holes are formed in the joining end faces of the segments so as to communicate with each other when the joining end faces of the segments abut. By embedding a joint plate, inserting a bolt into a bolt insertion hole that is connected to each other of this joint plate and screwing a nut,
A structure in which these segments are joined to each other is common.

[0003]

However, in the above-described structure, the joining operation is extremely complicated, so that there is a problem that a great deal of labor is required on site and a long construction period is required. In addition, in the case of the above structure, a bolt box for attaching a bolt and a nut is required on the inner surface of the segment. Therefore, after assembling the segment, the bolt box of each segment must be filled with a filler or the like. The work also required a great deal of effort.

The present invention has been made in view of the above circumstances, and provides a joint structure capable of joining members very easily without performing complicated work and shortening the construction period. It is intended to provide.

[0005]

In order to achieve the above object, a joint structure according to the first aspect of the present invention is characterized in that a male joint fitting is engaged with a female joint fitting, so that the male joint fitting and the female mold fitting are connected. A joint structure for joining members provided with joint fittings, wherein the male joint fitting has a joining rod projecting from a joining end surface of the member, and the female joint fitting is inserted with the joining rod. By doing so, it has a female joint body that locks this joint rod, the joint rod of the male joint fitting has a narrower portion at the rear end side than the distal end,
The female joint body of the female joint fitting includes a housing into which the joining rod is inserted, a pair of locking members rotatably supported at one end side in the housing, and a pair of locking members. An urging member provided on the outer peripheral side of the member, urging these locking members to rotate at the pivot point and bring them closer to each other, and when the joining rod is inserted, The locking member rotates in a direction approaching each other by the biasing force of the biasing member and fits and locks to the constricted portion by sandwiching the joining rod.

As described above, by inserting the connecting rod of the male fitting into the female fitting, it is very easy to provide the female fitting to the constricted portion of the connecting rod and to come close to each other by the urging member. The male joint fitting and the female joint fitting can be joined by fitting a pair of locking members urged in the direction, and the segments can be joined to each other. As a result, labor on site can be significantly reduced, and the construction period can be shortened. Also,
It is possible to eliminate the need for a bolt box in a joint structure using bolts and nuts, thereby eliminating the work of closing the bolt box after assembly.

According to a second aspect of the present invention, in the joint structure of the first aspect, a fitting concave portion having substantially the same diameter as a constricted portion of the joining rod is formed at a position of the locking member facing each other, The constricted portion is fitted into the fitting concave portion when the connecting rod is inserted.

Thus, when the locking member clamps the joining rod, the constricted portion of the joining rod is fitted into the fitting concave portion, so that a more secure locking state can be obtained.

A joint structure according to a third aspect of the present invention is the joint structure according to the first or second aspect, wherein a sliding recess is formed at one end of the one locking member, and one end of the other locking member. Has a sliding convex portion that is slidably fitted to the sliding concave portion, and by fitting these to each other,
It is characterized in that the locking members are rotatably supported in the housing around a fitting portion between the sliding concave portion and the sliding convex portion.

That is, by fitting a sliding concave portion and a sliding convex portion formed at one end of the locking member, it is possible to turn these locking members at one end extremely easily. A structure that can approach each other by the urging force of the urging member can be obtained.

[0011] The joint structure according to the fourth aspect is the first to third aspects.
The joint structure according to any one of the above, wherein the urging member comprises a leaf spring.

That is, it is possible to reliably urge the locking members in the approaching direction by the urging member formed of a leaf spring, and to fit the concave portion of the locking member into the constricted portion of the joining rod to lock. it can.

According to a fifth aspect of the present invention, there is provided a joint structure.
5. The joint structure according to claim 1, wherein the urging member is made of an elastic resin.

As described above, the locking members are reliably urged in the approaching direction by the urging member made of the elastic resin, and the fitting concave portion of the locking member is fitted into the constricted portion of the joining rod to engage. Can be stopped.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the joint structure according to the present invention will be described below with reference to the drawings. 1 and 2,
Reference numeral 1 denotes a joint fitting. As shown in FIG. 3, this joint fitting 1 is composed of a male joint fitting 2 and a female joint fitting 3 provided on each of the segments (members) S constituting the lining body of the tunnel. The segment S provided with the male joint fitting 2 and the female joint fitting 3 is provided with a skin plate 6 on the outer peripheral side of a frame formed by a main girder plate 5 and a joint plate (not shown) constituting the joint end surface 4. Are provided, and the frame has a structure in which the concrete C is filled.

The male joint fitting 2 has a connecting rod 11 fixed to the main girder plate 5.
2 is formed, and a cap nut 13 is welded and fixed to the back side thereof. The joining rod 11 is formed of a rod body having a thread formed at a rear end thereof. I have. The joining rod 11 has a tapered portion 14 having a tapered end, and a constricted portion 15 having a smaller diameter than the tapered portion 14 is formed at a rear end side of the tapered portion 14.

The female joint fitting 3 is composed of a female joint main body 21 fixed to the back side of the main girder plate 5, and the male joint fitting 2 inserted through an insertion hole 22 formed in the main girder plate 5. Is locked.

The female joint body 21 includes a housing 23,
The cover 2 attached to the opening side of the housing 23
4 and a locking plate 25 disposed in the housing 23. Cover 24 attached to housing 23
In the center, the insertion hole 2 communicating with the insertion hole 22 is provided.
The connecting rod 11 of the male joint fitting 2 is inserted into the female joint main body 21 from the insertion hole 24a.

The housing 23 has a holding space 26 having a large diameter on the opening side to which the cover 24 is attached.
The back side is a small diameter space 27 formed with a small diameter. A pair of locking members 25 are held in the holding space 26 of the housing 23. These locking members 25
The outer periphery is formed in a substantially circular arc shape, and a fitting recess 30 having a diameter substantially equal to the diameter of the constricted portion 15 of the joining rod 11 is formed in a portion of the inner periphery facing each other.

In addition, one end of one locking member 25 has
A sliding recess 31 is formed, and one end of the other locking member 25 has a sliding protrusion 3 slidably fitted in the sliding recess 31.
2 are formed. The locking members 25 are rotatable around the fitting positions of the sliding concave portions 31 and the sliding convex portions 32. In addition, these locking members 2
5 is provided on the outer peripheral side with a leaf spring (biasing member) 33 formed in an arc shape, and the respective locking members 25 are respectively moved in the inner circumferential direction, that is, the locking members 25 by the leaf springs 33. The members are rotated about a fitting portion between the sliding concave portion 31 and the sliding convex portion 32 and are urged in directions approaching each other.

A ring-shaped cap 34 is fitted between the locking members 25 and in the small-diameter space 27, so that the locking member 25 is biased by the leaf spring 33. In contrast, the main girder plate 5 is held in a state of being disposed on the outer peripheral side of the insertion hole 22.

Next, a description will be given of a case where the male fitting 2 and the female fitting 3 constituting the fitting 1 having the above structure are joined to each other to join the segments S together. When joining the male fitting 2 and the female fitting 3 to each other, the male fitting 2 and the female fitting 3 are connected to the cover 24 of the female fitting main body 21 through the insertion holes 22 formed in the main girder plate 5 of the segment S on the female fitting 3 side. The connecting rod 11 of the male fitting 2 is inserted into the formed insertion hole 24a. In this manner, the tapered portion 14 of the connecting rod 11 of the male fitting 2 is engaged with the locking plate 25.
Abuts on the cap 33 holding the
3 is pushed into the small diameter space 27.

Thereafter, when the cap 33 is completely pushed into the small-diameter space 27 and the tapered portion 14 of the joining rod 11 of the male fitting 2 exceeds the locking member 25, the plate spring 33 moves inward to the inner circumference. Energized locking member 25
While the fitting recess 30 is fitted to the constricted portion 15 of the joining rod 11, the fitting rod 30 is rotated around the fitting portion between the sliding recess 31 and the sliding convex portion 32 to clamp the joining rod 11. As a result, as shown in FIGS. 4 to 6, the joining rod 11 is locked by the pair of locking members 25, and the movement to the rear end side is prohibited, and the male fitting 2 and the female fitting 2 are connected. 3 are joined to each other, and the segments S provided with the male joint fitting 2 and the female joint fitting 3 are joined together.

As described above, according to the above joint structure, the joint rod 11 of the male joint fitting 2 is connected to the female joint fitting 3.
, The fitting recesses 30 of the pair of locking members 25 provided on the female joint fitting 3 are fitted into the constricted portion 15 of the joining rod 11 very easily. And the female joint fitting 3 to join the segments S to each other. As a result, labor on site can be significantly reduced, and the construction period can be shortened.

Further, it is possible to eliminate the need for a bolt box in the joint structure using bolts and nuts, thereby eliminating the work of closing the bolt box after assembly.

In the above example, the leaf spring 33 is used as an urging member for urging the locking member 25 to the inner peripheral side. However, the urging member is not limited to the leaf spring 33. Instead, for example, as shown in FIGS.
Is filled with an elastic resin 41 such as urethane rubber as an urging member.
Of course, the fitting recess 30 of the locking member 25 may be fitted to the constricted portion 15 of the joining rod 11 by urging the inner circumferential side of the locking member 5. In the above example, the cap 33 is provided to hold the locking members 25 apart from each other.
When inserting 1, the locking members 25 may be separated from each other by the tapered portion 14.

[0027]

As described above, according to the joint structure of the present invention, the following effects can be obtained. Claim 1
According to the joint structure described above, by inserting the joining rod of the male joint fitting into the female joint fitting, it is extremely easily provided on the female joint fitting to the constricted portion of the joining rod, and the inner periphery is provided by the urging member. By fitting a pair of locking members urged in the direction,
These male fittings and female fittings can be joined to join the segments together. As a result, labor on site can be significantly reduced,
The construction period can be shortened. In addition, a bolt box required for a joint structure using bolts and nuts can be eliminated, thereby eliminating the work of closing the bolt box after assembly.

According to the joint structure of the second aspect, when the locking member sandwiches the joining rod, the constricted portion of the joining rod is fitted into the fitting concave portion, thereby obtaining a more secure locking state. be able to.

According to the joint structure of the third aspect, by fitting the sliding concave portion and the sliding convex portion formed at one end of the locking member, the locking members can be extremely easily connected to each other. A structure that is rotatable at one end and can be approached to each other by the urging force of the urging member can be obtained.

According to the joint structure of the fourth aspect, the locking members are reliably biased in the approaching direction by the biasing member formed of a leaf spring, and the fitting recess of the locking member is moved toward the constricted portion of the connecting rod. It can be fitted and locked.

According to the joint structure of the fifth aspect, the locking members are reliably urged in the approaching direction by the urging member made of an elastic resin, and the fitting recess of the locking member is constricted by the connecting rod. It can be fitted and locked to the part.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a segment having a male joint fitting and a female joint fitting joined to each other, illustrating a joint structure according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a segment having a male joint fitting and a female joint fitting joined together for explaining a joint structure according to an embodiment of the present invention.

FIG. 3 is a plan sectional view of a segment provided with a female joint fitting for explaining the joint structure according to the embodiment of the present invention.

FIG. 4 is a side sectional view of a segment having a male joint fitting and a female joint fitting joined to each other, illustrating a joint structure according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a segment having a male joint fitting and a female joint fitting joined together for explaining a joint structure according to an embodiment of the present invention.

FIG. 6 is a plan cross-sectional view of a segment provided with a female joint fitting locking a male joint fitting for explaining the joint structure according to the embodiment of the present invention.

FIG. 7 is a side sectional view of a segment having a male joint fitting and a female joint fitting joined to each other, illustrating a joint structure according to another embodiment of the present invention.

FIG. 8 is a plan cross-sectional view of a segment provided with a female joint fitting locking a male joint fitting for explaining a joint structure according to another embodiment of the present invention.

[Explanation of symbols]

 2 Male joint fitting 3 Female joint fitting 4 Joining end face 11 Joining rod 15 Constricted portion 21 Female joint main body 23 Housing 25 Locking member 30 Fitting concave portion 31 Sliding concave portion 32 Sliding convex portion 33 Leaf spring (biasing member) ) 41 Resin (biasing member) S segment (member)

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shunji Hatori 2 Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. (72) Inventor Masanori Kawamura 2nd Sanbancho, Chiyoda-ku, Tokyo Tobishima Construction Co., Ltd. (72) Inventor Katsumi Kurimoto 2 Tobanjima Construction Co., Ltd., 2 Sanbancho, Chiyoda-ku, Tokyo (72) Inventor Munetaka Oseki 1-12-1 Yurakucho, Chiyoda-ku, Tokyo Ishikawashima Construction Materials Co., Ltd. (72 ) Inventor Akihiro Minezaki 1-12-1 Yurakucho, Chiyoda-ku, Tokyo Ishikawashima Construction Materials Industry Co., Ltd. (72) Inventor Toshio Mochizuki 1040 Hoshiyama, Fujinomiya-shi, Shizuoka Prefecture F-term (reference) 2D055 GC04

Claims (5)

[Claims] 1. A joint structure for joining a member provided with a male joint fitting and a female joint fitting by locking the male joint fitting to a female joint fitting, wherein the male joint fitting is provided. The fitting has a joining rod protruding from a joining end face of the member, and the female joint fitting has a female joint main body that locks the joining rod by inserting the joining rod. The joining rod of the male joint fitting has a narrower portion at the rear end side than the distal end, and the female joint body of the female joint fitting includes a housing into which the joining rod is inserted, In the housing, a pair of locking members rotatably supported at one end side, and a pair of locking members provided on the outer peripheral side of the locking member, and urging these locking members at the rotation point. An urging member that is rotated to approach each other, and wherein the joining rod is inserted. In this case, the locking member rotates in a direction approaching each other by the urging force of the urging member, and clamps the joining rod to fit and lock the constricted portion. And the joint structure. 2. A fitting recess having a diameter substantially equal to that of the constricted portion of the connecting rod is formed in the engaging member at a position facing each other, and when the connecting rod is inserted, the constricted portion is formed. The joint structure according to claim 1, wherein the joint structure is fitted in the fitting recess. 3. A sliding concave portion is formed at one end of the one locking member, and a sliding convex portion slidably fitted into the sliding concave portion at one end of the other locking member. Are formed, and by engaging them with each other, the locking members are rotatably supported in the housing around the fitting portion between the sliding concave portion and the sliding convex portion. The joint structure according to claim 1 or 2, wherein: 4. The joint structure according to claim 1, wherein said urging member is made of a leaf spring. 5. The joint structure according to claim 1, wherein the urging member is made of an elastic resin.