JP3986637B2 - Segment connector and segment and segment connection structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joining tool used for joining segments constructing a tunnel wall, a segment including the joining tool, and a joining structure of the segments.
[0002]
[Prior art]
For example, when a tunnel wall body is constructed with a large number of segments, conventionally, joints having holes are embedded in the joint surfaces of the segments, and the joint surfaces of the segments are brought into contact with each other, and bolts are inserted into the holes. Is inserted and a number of segments are joined together by screwing nuts onto the bolts.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned joining method, the holes formed in the joints of the segment joining surfaces must be precisely matched, and a bolt is inserted into the hole, and a nut is screwed into the bolt and tightened. However, there is a problem that the operation is extremely complicated and time-consuming.
[0004]
The present invention aims to provide a bonding tool of the segments good structure simple and operability.
Another object of the present invention is to provide a segment that can be easily joined without effort.
Another object of the present invention is to provide a highly reliable segment bonding structure with high bonding strength.
[0005]
[Means for Solving the Problems]
In order to achieve at least one of the above-mentioned objects, the invention according to claim 1 is characterized in that a crushing cap is attached to the tip of the joining rod, and a notch is provided between the tip of the joining rod and the inner bottom surface of the crushing cap. Thus, a configuration is adopted in which a diameter-expanding member having a plurality of deformed pieces that are radially divided and curved in a tapered shape is inserted.
[0006]
A segment of the bonding tool projecting from the joint surface, and other segments to form a joint hole to the bonding surface, those of the present connectors other is inserted into the joining hole of the segment bonding surfaces to each other in both segments together When the crushing cap of the joining tool is pressed against the bottom of the joining hole, each deformed piece of the enlarged member that has been curved and constricted until then is deformed into a flat plate shape and the diameter is increased. And the crushing portion is locked to the locking portion of the joint hole.
[0007]
In the above-mentioned connector, it is preferable that the diameter-expanding member is provided with the tip of each deformable piece facing the corner of the crushing cap (Claim 2). If it does in this way, a crush cap and a diameter-expansion member will change exactly, and will form a crushing part. Further, when the joining rod is tapered (claim 3), it is easy to insert the joining tool into the joining hole. In addition, if the bottom of the joining rod, the bottom of the crushing cap, and the center of the diameter-expanding member are each provided with an air vent hole (Claim 4), the air in the engaging portion of the joint hole is released from the air vent hole, so The cap will collapse smoothly.
[0008]
Moreover, the segment of Claim 5 was set as the structure which protruded on the joining surface by the joining tool set as said structure.
In this configuration, both this segment and the other segment with the joint hole formed on the joint surface are inserted into the joint hole of the other segment and the joint surfaces of both segments are brought into contact with each other. The joining of the segments is complete.
[0009]
The joint of the other segment is inserted into the joint surface of the segment, the crush cap is crushed at the bottom of the hole, and the crushing portion of the crush cap formed by the diameter expansion deformation of each deformation piece of the diameter expanding member is a locking portion. A joint hole to be locked can be provided (claim 6).
[0010]
According to a seventh aspect of the present invention, there is provided a collapsible portion of the crushing cap, wherein the segment having the above-described configuration is inserted into a joint hole provided in a joint surface of another segment so that the joint surfaces are brought into contact with each other. Was joined to the joint of the joint hole.
[0011]
In this configuration, the crushing portion of the connector is locked to the locking portion of the bonding hole, and both segments are firmly bonded. Since the crushing part is formed in a large diameter by the diameter expansion deformation of each deformation piece of the diameter expanding member, a strong and stable joining force can be obtained.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the invention will be described with reference to the drawings.
The accompanying drawings show an embodiment of the present invention. In these drawings, reference numeral 1 denotes a connector. The joining tool 1 is composed of a joining rod 2, a crushing cap 3, and a diameter expanding member 4.
[0013]
The joining rod 2 is made of metal, and is formed by forming a linear step 2b on the outer surface of the tip of a tapered bottomed cylindrical body 2a. The crushing cap 3 is made of a relatively thin metal and has a bottomed cylindrical shape. The crushing cap 3 has a cylindrical portion with a space k between the inner bottom surface of the bottom portion 3a and the front end surface of the bottom portion 2c of the joining rod 2. 3b is fitted to the step 2b of the joining rod 2 and welded integrally. 3c is the weld.
[0014]
Further, the diameter-expanding member 4 is formed by forming a plurality of deformed pieces 4b (four in FIG. 2) curved in a tapered shape around the center portion 4a by radial notches 4c, The center 4a is brought into contact with the bottom 2c of the joining rod 2, and the tip of each deformable piece 4b is placed in the space k with the bottom 3a of the crushing cap 3 and the corner 3d of the cylinder 3b. The diameter-expanding member 4 is also made of metal, and each of the deformable pieces 4b curved in a tapered shape can be deformed into a flat plate shape to increase its outer diameter.
[0015]
Reference numeral 7 denotes a joint hole. The joining hole is for inserting the joining tool 1, and has an inner shape at the inner back portion of the tapered hole portion 7 a fitted to the outer shape of the joining rod 2, and the locking portion 7 b is a large diameter of the hole bottom 7 c portion. It is formed by the portion 7d. Air vent holes 2d, 3d, and 4d are provided in the bottom 2c of the joining rod 2, the bottom 3a of the crushing cap 3, and the center 4a of the diameter expanding member 4, respectively.
[0016]
The joining tool 1 and the joining hole 7 are provided on two members to be joined to each other, for example, the joining surfaces Sa and Sb of the pair of segments S and S. When the segment S is a concrete segment, the connector 1 is usually fixed to the anchor bar 11 by welding in a state of protruding perpendicularly to the joint surface Sa as shown in FIG. Further, the joining hole 7 is generally provided by means such as embedding a cylindrical metal member manufactured by matching the inner shape with the shape of the joining hole 7 in the joining surface Sb.
[0017]
Two members having the joint 1 and the joint hole 7, in the above example, in order to join the pair of segments S and S, the segments S and S are brought close to each other and the joint 1 of one segment S is joined. Is inserted into the joining hole 7 of the other segment S (see the upper half of FIG. 1), and the joining surfaces Sa and Sb of both the segments S and S are brought into contact with each other. Due to the contact pressure at this time, the crushing cap 3 of the connector 1 hits against the hole bottom 7c of the bonding hole 7 and is crushed, but until then, the tip is narrowed to reduce the diameter as shown in the upper half of FIG. Each of the deformed pieces 4b of the expanded diameter member 4 is deformed into a flat plate shape to increase the diameter as shown in the lower half of FIG. 2, and the crushing cap 3 is placed in the large diameter portion 7d along the hole bottom 7c. The collapsing part A that spreads together and engages with the engaging part 7b is formed in cooperation with the crushing cap 3 (see the lower half of FIG. 1 and FIG. 4). As a result, the joint 1 cannot be pulled out from the joint hole 7 and the joining of the segments S and S is completed.
[0018]
In the above, since the joining rod 2 of the joining tool 1 is tapered, even if the center of the joining tool 1 is slightly displaced from the center of the joining hole 7 when insertion into the joining hole 7 is started, It will be inserted into the joint hole 7 accurately, and when the insertion is completed, the centers thereof will be completely coincided with each other, so that both segments S, S will be correctly joined. Therefore, the segments S and S can be joined quickly and accurately without trouble.
[0019]
In addition, the crushing portion A has a large diameter, spreads in the large-diameter portion 7d, and is locked to the locking portion 7b, so that a strong joining force with high stability and reliability can be obtained. When the crushing cap 3 is crushed, air in the locking portion 7b escapes from the air vent holes 2d, 3d, and 4d, so that the crushing cap 3 is accurately crushed.
[0020]
The shape of the joining rod 2 is not limited to that shown in the figure, and may be a linear shape whose thickness does not change. Further, the number of deformation pieces 4b of the diameter-expanding member 4 can be three, five or more, or two in some cases, in addition to four.
[0021]
The present connector 1 can also be used for joining a segment other than a square segment, for example, a hexagonal segment, or two members other than a segment. Further, even when used for joining segments, the present invention can be used not only for concrete segments but also for joining steel segments. When the joint 1 and the joint hole 7 are provided in the same segment S, they can be provided separately on different joint surfaces Sa and Sb as shown in FIG. 3, or can be provided on the same joint surface.
[0022]
【The invention's effect】
As described above, according to the first aspect of the present invention, the crush cap is attached to the distal end portion of the joining rod, and is radially divided by the notch between the distal end surface of the joining rod and the inner bottom surface of the crush cap. Since the diameter-expanding member having a plurality of deformed pieces bent into a wide tip shape is inserted, both the joints are inserted into the joint holes of other members to be joined. Joining is completed simply by strongly abutting the joining surfaces of the members. Therefore, it is possible to perform quickly efficiently joining of segments. In addition, the structure is simple and the operability is good.
[0023]
In the above connector, when the diameter-enlarging member is provided with the tip of each deformable piece facing the corner of the crushing cap, the crushing cap and the diameter-expanding member are accurately deformed, and are stable and strong. Bonding force can be obtained. Further, when the joining rod is tapered, the insertion of the joining tool into the joining hole is facilitated, and the segments can always be joined correctly. Furthermore, if air vent holes are provided in the bottom portion of the joining rod, the bottom portion of the crush cap, and the center portion of the diameter-expanding member, the air in the engaging portion of the joint hole escapes from the air vent hole, so that the crush cap is crushed smoothly. .
[0024]
Further, in the invention described in claim 5, since the connector having the above-mentioned configuration is projected from the bonding surface, the tunnel walls can be efficiently constructed by bonding the segments quickly and firmly. Further, if a joint and a joint hole are provided in one segment, it becomes possible to join segments having the same structure.
[0025]
According to a seventh aspect of the present invention, there is provided a collapsible portion of the crushing cap, wherein the segment having the above-described configuration is configured such that a joining tool is inserted into a joining hole provided in a joining surface of another segment so Since it is made into the structure joined by making it latch to the latching | locking part of a joining hole, the tunnel wall body etc. to which the segments were joined firmly can be constructed | assembled.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an embodiment of a connector according to the present invention.
FIG. 2 is a front view of a diameter-expanding member used in the connector of FIG.
FIG. 3 is a partially broken front view showing an embodiment of a segment according to the present invention.
FIG. 4 is a cross-sectional view showing an embodiment of a segment joining structure according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Joiner 2 ... Joining rod 2b ... Step part 2c ... Bottom part 2d, 3d, 4d Air vent hole 3 ... Crush cap 3a ... Bottom part 3b ... Cylindrical part 4 ... Expanding member 4a ... Center part 4b ... Deformed piece 4c ... Notch 7 ... Joining hole 7a ... Hole 7b ... Locking part 7c ... Hole bottom 7d ... Large diameter part k ... Space A ... Crushing part S ... Segment Sa, Sb ... Joining surface

Claims (7)

A plurality of deformed pieces each having a crush cap attached to the tip of the joining rod and being radially divided by a notch between the tip surface of the joining rod and the inner bottom surface of the crush cap and curved in a tapered shape connectors segment, characterized in that the enlarged diameter member is charged with. Diameter member, connectors segment according to claim 1, wherein the distal end of each deformation piece to face the corner portion of the collapse cap, characterized in that provided. 3. The segment connector according to claim 1, wherein the connecting rod is tapered. Connectors segment according to any one of claims 1, characterized in that each vent in the center of the bottom and the enlarged diameter member bottom and collapse cap joint rod is provided 3.   A segment, wherein the connector according to any one of claims 1 to 4 is provided on a joint surface.   6. A collapsing portion of a crushing cap formed by inserting a fitting of another segment into the joining surface of the segment according to claim 5 and crushing the crushing cap at the bottom of the hole, and by expanding the deformation of each deformation piece of the expanding member. A segment provided with a joint hole for engaging the engaging portion with the engaging portion.   7. The segment according to claim 5 or 6, wherein a joining tool is inserted into a joining hole provided on a joining surface of another segment to bring the joining surfaces into contact with each other, and the crushing portion of the crushing cap is locked to the joining hole. The joining structure of the segment characterized by being joined by being latched to the part.

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