JP2003262092A - 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: A female member 2 provides a fixing hole 3 in a center part, and a cross section of a shape of an inner peripheral face of the fixing hole 3 is gradually narrowed from an edge part 3a to the center part 3b. Further, the cross section has a tapered shape widened gradually widened toward a bottom part 3c. A male member 4 has a cylindrical shape projected outward more than the other joined face 1b, and has an outer shape fitted to the cross section of the center part 3b in the fixing hole 3 of the female member 2. The cross section is largely formed as compared with the center part 3b of the fixing hole 3 in the neighborhood 4a of the edge part of the male member 4, and the male member 4 is inserted in the female member 2. The neighborhood 4a of the edge part passes through the center part 3b of the fixing hole 3, and, when pushed in down to the neighborhood of the bottom part 3c, the male member 4 cannot be easily pulled out from the female member 2. <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 segment joint according to claim 1 is a segment joint for constructing a tunnel wall body, wherein a female member provided on one joint surface of the segment and the female member. It is configured by a male member that is fitted to a member and is provided on the other joint surface located on the surface opposite to one surface of the segment, and the female member is a central portion compared to the tip portion and the bottom portion. The male member is made of a long tubular material having a cross section similar to the inner diameter of the central portion of the fixing hole, and the cross section near the tip portion of the fixing hole has It is characterized in that it is formed larger than the cross section of the central portion.

The segment joint according to claim 2 is characterized in that the female member and the male member are made of non-metallic members.

According to a third aspect of the present invention, in the segment joint, the distal end portion of the male member is plastically deformed to be squeezed inward of the cylindrical shape, and its cross section is formed smaller than the fixing hole. It has a feature.

[0008]

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. The female member 2 is provided with a fixing hole 3 in the center, and the shape of the inner peripheral surface of the fixing hole 3 is gradually narrowed in cross section from the tip 3a to the center 3b, and further the bottom 3 is formed.
The cross section has a taper shape in which the cross section gradually widens toward c.

As shown in FIG. 1, the female member 2 is
The joint 5 of the segment 1 is made of a non-metallic member such as resin having a rigidity that can be used. 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 joining surface 1b of the segment 1 which is located opposite to the one joining surface 1a with the same spacing as the female member 2. It is fixed. The male member 4 is
It has a cylindrical shape protruding outward from the other joint surface 1b, and has a central portion 3 in the fixing hole 3 of the female member 2.
The cross section of b has an outer shape that fits without a gap.

In the vicinity of the tip portion 4a of the male member 4,
Has a larger cross section than the central portion 3b of the fixing hole 3 of the female member 2. As shown in FIG. 2, when the male member 4 is inserted into the female member 2 and the vicinity 4a of the tip portion passes through the central portion 3b of the fixing hole 3 and is pushed into the vicinity of the bottom portion 3c, the female member 4 is inserted. The configuration is such that the male member 4 cannot be easily pulled out from 2.

Further, the tip portion 4b of the male member 4 is
Is plastically deformed by pushing and bending, and has a shape of a hollow cylindrical inward. Such a shape is intended to allow the male member 4 to be easily inserted into 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 male member 4 is not limited to this, and if the material has corrosion resistance, a metal or the like having the entire surface coated with a corrosion resistant agent may be used.

In this way, 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,
By pressing these surfaces so that they face each other, the joint 5 is formed and the adjacent segments 1 are connected to each other. In this way, the adjacent segments 1 are sequentially joined by arranging the adjacent joining faces 1 a and the other joining face 1 b so as to face each other, thereby constructing the tunnel wall body. It

According to the above-mentioned structure, the joint 5 of the segment 1 has the central portion 3b as compared with the tip portion 3a and the bottom portion 3c.
Female member 2 provided with the fixing hole 3 having a small cross section
And a male member 4 provided in a shape that fits into the inner diameter of the central portion 3b of the fixing hole 3, and the cross section of the male member 4 near the tip portion 4a is the central portion 3b of the fixing hole 3. Since it is formed larger, it is difficult to pull out the female member 2 and the male member 4 fitted with a simple structure, and the joint 5 can be formed easily and surely. The segment 1 can be easily assembled, and the workability can be improved.

The female member 2 and the male member 4 are
Since the joint 5 of the segment 1 is made of a non-metallic member such as resin having rigidity that can be used, durability can be improved and maintenance work can be significantly reduced, resulting in a large life cycle cost. Can be reduced to.

Since the front end portion 4a of the male member 4 has a cylindrical shape that is recessed inward, insertion of the female member 2 into the fixing hole 3 is easy and construction is possible. It is possible to improve the property.

[0019]

The segment joint according to claim 1 is a joint for a segment for constructing a tunnel wall, wherein the female member is provided on one joint surface of the segment and the female member is attached to the female member. A cross-section of the center portion of the female member, which is fitted to the male member provided on the other joint surface located on the surface facing the one surface of the segment, and the female member is compared to the tip and the bottom. With a fixing hole formed into a small size, the male member is made of a long tubular material having a cross section similar to the inner diameter of the central portion of the fixing hole, and the cross section near the tip thereof is the central portion of the fixing hole. Since it is formed larger than the cross section of the segment, it is difficult to pull out the female member and the male member fitted with a simple structure, and the joint can be formed easily and surely. Assembly is easy, it is possible to improve the workability.

According to the second aspect of the present invention, since the female member and the male member are made of non-metallic members, durability is improved and maintenance work is greatly reduced. Therefore, the life cycle cost can be significantly reduced.

According to the third aspect of the joint of the present invention, the distal end portion of the male member is plastically deformed and squeezed inward of the cylindrical shape, and its cross section is formed smaller than the fixing hole. Therefore, the female member can be easily inserted into the fixing hole and the workability can be improved.

[Brief description of drawings]

FIG. 1 is a view showing a male member and a female member of a segment according to the present invention.

FIG. 2 is a diagram showing a joint of a segment according to the present invention.

[Explanation of symbols]

1 segment 1a One joining surface 1b The other joint surface 2 female members 3 fixing holes 3a tip 3b central part 3c bottom 4 Male member 4a near the tip 4b tip 5 joints

Claims (3)

[Claims] 1. A joint of a segment for constructing a tunnel wall body, comprising a female member provided on one joint surface of the segment, and fitting to the female member, and relative to the one surface of the segment. And a male member provided on the other joint surface located on the surface, the female member is
The male member is a long tubular member having a cross-section similar to the inner diameter of the central portion of the fixing hole while having a fixing hole in which the cross-section of the central portion is smaller than the tip and bottom portions. A segment joint characterized in that the cross section in the vicinity is formed larger than the cross section of the central portion of the fixing hole. 2. The segment joint according to claim 1, wherein the female member and the male member are made of non-metallic members. 3. The joint of the segment according to claim 1, wherein the tip end portion of the male member is plastically deformed and squeezed inward of a cylindrical shape, and its cross section is smaller than the fixing hole. A segment joint characterized by being formed.