JP2003262093A - Joint of segment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint of segments which can be joined surely and easily and has durability. <P>SOLUTION: The edge part of a lower face of a diameter-widening member 6 is arranged so as to be brought into contact with an edge part of a male member 4 by faces. An upper face of the diameter-widening member 6 is inserted so as to be brought into contact with a bottom face of a fixing hole of a female member 2 by faces. The bottom face of the fixing hole and the upper face of the diameter-widening member 6 are butted by faces, further the diameter-widening member 6 is pushed in the bottom face of the fixing hole by using the male member 4. Thereby the diameter-widening member 6 is stored in the cavity part of the male member 4, an outside diameter of the male member 4 is widened, and the male member 4 is fitted to the fixing hole of the female member 2 to form a joint 5 of a segment 1. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a durable segment joint which can be joined securely and easily.

[0002]

2. Description of the Related Art Conventionally, in the case of constructing a tunnel wall body with a large number of segments, a joining member having a hole is embedded in the joining surface of the segments, and the joining surfaces of the segments are brought into contact with each other to form the holes. A large number of segments are sequentially joined to each other by constructing a bolt through the portion and screwing a nut onto the bolt.

[0003]

However, in such a structure, a bolt must be passed through a hole formed in the joining member of the segment joining surface, and a nut must be screwed and tightened on the bolt, The operation is extremely complicated and time-consuming. In addition, the joining members, bolts, nuts, etc. are often made of steel materials, and thus are easily corroded with time.

In view of the above circumstances, it is an object of the present invention to provide a durable segment joint which can be joined reliably and easily.

[0005]

A joint for a segment according to claim 1 is a joint for a segment for constructing a tunnel wall body, the female joint being provided on one joint surface of the segment and having a fixing hole at a central portion thereof. A mold member, a cylindrical male member provided on the other joint surface located on a surface facing one surface of the segment, and fitted in a fixing hole of the female member, and the inside of the male member And a diameter expanding member that expands the cross-sectional shape of the male member, and the upper surface of the diameter expanding member is in contact with the bottom surface of the fixing hole of the female member face to face. .

According to a second aspect of the present invention, in the joint of the segment, a taper is provided from an inner peripheral surface toward an outer peripheral surface at an edge portion of a lower surface of the diameter expanding member, and a cylindrical tip portion of the male member. However, the taper is provided from the outer peripheral surface toward the inner peripheral surface so that the taper provided on the edge portion of the lower surface of the diameter expanding member is in contact with each other face to face.

A segment joint according to a third aspect of the invention is characterized in that the male member is provided with a plurality of slits in a direction of insertion into the female member.

A segment joint according to a fourth aspect is characterized in that the female member, the male member, and the diameter-expanding member are made of non-metallic members.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The segment joint of the present invention will be described in detail below with reference to FIGS. The segment joint of the present invention, without using bolts and nuts,
On one joint surface where the female part of the segment is provided,
By pressing the other joining surface on which the male members of the adjacent segments are provided, the adjacent segments are surely combined with each other.

A plurality of female members 2 are embedded in one joint surface 1a of the segment 1 with a constant interval. As shown in FIG. 1, the female member 2 is provided with a fixing hole 3 having a uniform cross-sectional shape in the central portion, and its tip 3a is formed to have a smaller cross-sectional shape than the main body. ing.

The female member 2 is made of a non-metallic member such as resin having a rigidity that can be used as the joint 5 of the segment 1. The material of the female member 2 is not limited to this, and a metal or the like whose entire surface is coated with a corrosion resistant agent may be used as long as it has corrosion resistance.

On the other hand, a plurality of male members 4 are arranged on the other joint surface 1b of the segment 1 which is located opposite to the one joint surface 1a with the same spacing as the female member 2. It is fixed. The male member 4 is
It has a cylindrical shape that projects outward from the other joint surface 1b, and has an outer diameter that is substantially the same as the inner diameter of the tip end portion 3a of the fixing hole 3 of the female member 2.

The male member 4 is similar to the female member 2 and is made of a non-metallic member such as resin having a rigidity that can be used as the joint 5 of the segment 1. The material of the female member 2 is not limited to this, and a metal or the like whose entire surface is coated with a corrosion resistant agent may be used as long as it has corrosion resistance.

Further, at the tip portion 4b of the male member 4,
The diameter expansion member 6 is arranged. The diameter expanding member 6 has the same cross section as the outer shape of the male member 4. The upper surface 6a is formed so as to be in contact with the bottom surface 3b of the fixing hole 3 of the female member 2 face to face, and the edge portion 6b of the bottom surface is tapered from the inner peripheral surface to the outer peripheral surface. It is provided. The diameter-expanding member 6 will be described later.
Inner space 4 of the male member 4 having an inner diameter smaller than the cross section of
The outer shape of the male member 4 is expanded by being inserted into a. As a result, the outer diameter of the male member 4 fits into the inner diameter of the fixing hole 3.

In the present embodiment, the cylindrical member is used as the diameter expanding member 6, but any member may be used as long as it has a function of expanding the diameter of the male member 4 without being limited to this. May be. When the tubular member is used, a reinforcing plate 6c or the like may be attached to the hollow portion to reinforce the strength.

At this time, the tip portion 4b of the male member 4 is
Also, a taper is provided from the inner space 4a toward the outer peripheral surface so as to be able to come into contact with the taper provided on the edge portion 6b of the lower surface of the diameter expanding member 6 face to face. This allows
The diametrical expansion member 6 has a structure in which an edge portion 6b of the lower surface thereof is pressed with the tip end portion 4b of the male member 4 being in contact with each other, so that the inner diameter portion 4a of the male member 4 is easily inserted. Becomes

A plurality of slits 7 are provided on the outer peripheral surface of the male member 4 in the direction of insertion into the female member 2. The slit 7 provided on the outer peripheral surface of the male member 4 is provided to facilitate the storage of the diameter expanding member 6 in the inner space 4a of the male member 4, and is not necessarily provided.

A method of joining the female member 2 and the male member 4 having the above-described structure will be described below. As shown in FIG. 2, the diameter-expanding member 6 is attached to the distal end portion 4b of the male member 4.
Of the lower surface of the female member 2 are arranged so that the edge portions 6b of the lower surface of the female member 2 are in contact with each other.
Insert it so that the bottom surface 3b of each of them comes into contact with each other. The bottom surface 3b of the fixing hole 3 and the upper surface 6a of the diameter-expanding member 6 are butted against each other, and then the male member 4 is further attached.
The diameter-expanding member 6 is pushed into the bottom surface 3b of the fixing hole 3 by using.

As a result, as shown in FIG. 3, the diameter-expanding member 6 is stored in the inner space 4a of the male-type member 4, and the outer diameter of the male-type member 4 is increased, so that the male-type member 4 is expanded. Member 4
Is fitted into the fixing hole 3 of the female member 2 to form the joint 5 of the segment 1.

In this manner, the segment 1 in which the female member 2 is arranged on one joint surface 1a and the male member 4 is arranged on the other joint surface 1b is the segment 1 adjacent to the one joint surface 1a. Face the other joint surface 1b in parallel,
The joints 5 are formed by pressing these surfaces so that they face each other, and the adjacent segments 1 are connected to each other. Therefore, by arranging the adjacent joints 1 so that the one joint surface 1a and the other joint surface 1b face each other, the adjacent segments 1 are sequentially joined, and a tunnel wall body is constructed.

According to the structure described above, the joint of the segment 1 is expanded by using the female member 2 having the fixing hole 3 and the expanding member 6 to expand the diameter of the fixing hole 3.
Since it is configured by the male member 4 provided in a shape that fits in the shape, the configuration is simple and a joint can be formed easily and reliably, so that the segment 1 can be easily assembled and the workability can be improved. It is possible to improve.

A taper is provided on the tip portion 4b of the male member 4 and the edge portion 6b of the lower surface of the diameter expanding member 6,
Since the two surfaces are in contact with each other, the inner diameter portion 4a of the male member 4 can be smoothly attached to the diameter expanding member 6.
It is possible to store in, and it becomes possible to improve workability.

Since the outer peripheral surface of the male member 4 is provided with the slit 7 in the inserting direction of the female member 2, the expanding member 6 can be smoothly moved to the male member 4 in the same manner as described above. Since it can be pushed into the inner space 4a, the workability can be improved.

Since the female type member 2, the male type member 4 and the diameter expanding member 6 are made of non-metallic members, the durability is improved and the maintenance work can be greatly reduced, and the life can be shortened. It is possible to greatly reduce the cycle cost.

[0025]

According to the segment joint of the first aspect of the present invention, it is a joint for a segment for constructing a tunnel wall, the female member being provided on one joint surface of the segment and having a fixing hole in the central portion. And a cylindrical male member that is provided on the other joint surface located on the surface facing one surface of the segment and that fits into the fixing hole of the female member,
It is arranged inside the male member and is constituted by a diameter expanding member that expands the cross-sectional shape of the male member, and the upper surface of the diameter expanding member is face-to-face with the bottom surface of the fixing hole of the female member. Since they are in contact with each other, the structure is simple and the joint can be formed easily and surely, so that the segment can be easily assembled and the workability can be improved.

According to the segment joint of claim 2, a taper is provided from the inner peripheral surface toward the outer peripheral surface at the edge of the lower surface of the diameter expanding member, and the cylindrical shape of the male member is provided. Since the tip portion is tapered from the outer peripheral surface toward the inner peripheral surface so as to contact the taper provided on the edge portion of the lower surface of the diameter expanding member face to face,
The diameter-expanding member can be smoothly stored in the inner space of the male member, and the workability can be improved.

According to the segment joint of the third aspect, since the male member is provided with a plurality of slits in the insertion direction into the female member, the diameter expanding member is the same as above. Can be smoothly pushed into the inner space of the male member, and the workability can be improved.

According to the segment joint of claim 4, since the female member, the male member and the diameter-expanding member are made of non-metallic members, durability is improved and maintenance work is performed. Can be significantly reduced, and life cycle cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a male member, a female member, and a diameter expanding member of a segment according to the present invention.

FIG. 2 is a diagram showing a procedure for joining a male member, a female member, and a diameter-expanding member of a segment according to the present invention.

FIG. 3 is a diagram showing a joint of a segment according to the present invention.

[Explanation of symbols]

1 one segment 1a One joining surface 1b The other joint surface 2 female members 3 fixing holes 3a tip 3b bottom 4 Male member 4a inner space 4b tip 5 joints 6 Expanding member 6a upper surface 6b edge 6c Reinforcement plate 7 slits

Claims (4)

[Claims] 1. A joint for a segment for constructing a tunnel wall, the female member being provided on one joint surface of the segment and having a fixing hole in the central portion, and a surface facing the one surface of the segment. A cylindrical male member that is provided on the other joining surface located at, and that fits into the fixing hole of the female member, and that is disposed inside the male member and that expands the cross-sectional shape of the male member. And a diameter-expanding member, the upper surface of the diameter-expanding member contacting the bottom surface of the fixing hole of the female member face to face. 2. The segment joint according to claim 1, wherein an edge portion of the lower surface of the diameter expanding member is provided with a taper from the inner peripheral surface toward the outer peripheral surface, and the tubular shape of the male member is formed. A joint for a segment, wherein a taper is provided from an outer peripheral surface to an inner peripheral surface so that a tip portion of the outer peripheral surface is in contact with a taper provided on an edge portion of a lower surface of the diameter expanding member. 3. The segment joint according to claim 1 or 2, wherein the male member is provided with a plurality of slits in a direction of insertion into the female member. . 4. The segment joint according to claim 1, wherein the female member, the male member, and the diameter-expanding member are formed of a non-metal member.