Segment connection joint

Abstract

To provide a segment connection joint which can be used in a wider range of situations and which can reduce the type of the segment connection joint and the cost of the segment connection joint.SOLUTION: A segment connection joint (for example, a female segment connection joint 1) comprises a joint portion 3, an anchor leg portion 6a connected to the joint portion 3, and a bearing member 6r including a bearing plate 6t. The bearing plate 6t is connected to the anchor leg portion 6a and extends in a direction crossing the longitudinal direction of the anchor leg portion 6a. A hole 7 to which an anchor bar 9 is fixed is provided in the anchor leg portion 6a or the bearing member 6r.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a segment connection joint. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2003-307099 (Patent Document 1) discloses a connecting metal fitting for concrete segments, which includes a metal fitting body and an anchor portion. The metal fitting body and the anchor portion are integrally formed by casting. The anchor portion fixes the metal fitting body to the concrete of the segments. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-307099 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the connecting fitting disclosed in Patent Document 1, it is necessary to prevent the connecting fitting from coming out of the segment due to the tensile force applied to the connecting fitting. In order to secure sufficient resistance to the tensile force, the anchoring length of the anchor part must be set long. However, since the anchor part is integrally molded with the fitting body, the anchoring length of the anchor part cannot be changed. Therefore, the situations in which the connecting fitting disclosed in Patent Document 1 can be used are limited.

[0005] In order to make the connecting fitting disclosed in Patent Document 1 usable for segments with low girder height, it is necessary to increase the anchoring length of the anchor for the following two reasons. The first reason is that it is necessary to increase the contact area between the anchor and the concrete of the segment to increase the adhesive strength of the anchor to the concrete. The second reason is that the resistance to the above-mentioned tensile force increases as the distribution range (projected area) of the load from the anchor to the concrete increases. Since the projected area is greatly affected by the girder height of the segment, in segments with low girder height, it is necessary to obtain resistance to the above-mentioned tensile force by setting the anchoring length to be long and increasing the projected area. However, if the anchoring length of the anchor is increased, there is a problem that it will interfere with members (e.g., reinforcing bars or ring joints) other than the connecting fitting in the segment. Therefore, the situations in which the connecting fitting disclosed in Patent Document 1 can be used are limited.

[0006] In order to address the above problem, if many types of connecting fittings with different anchor portion lengths are prepared, there is a problem that the costs of the connecting fittings, such as the manufacturing costs, management costs, and storage costs, increase. An object of the present disclosure is to provide a segment connecting joint that can be used in a wider range of situations and that can reduce the types of segment connecting joints and the costs of the segment connecting joints. [Means for solving the problem]

[0007] The segment connection joint of the present disclosure includes a joint part, an anchor leg part connected to the joint part, and a support member including a support plate. The support plate is connected to the anchor leg part and extends in a direction intersecting the longitudinal direction of the anchor leg part. The anchor leg part or the support member is provided with a hole to which an anchor bar is fixed. Effect of the Invention

[0008] The segment connection joint of the present disclosure can be used in a wider range of situations and allows for a reduction in the types of segment connection joints and the costs of the segment connection joints. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a schematic front view of the segment connection joint (female type segment connection joint) of the first embodiment. [Diagram 2] FIG. 2 is a schematic plan view of the segment connection joint (female segment connection joint) of the first embodiment. [Diagram 3] FIG. 2 is a schematic front view of the segment connection joint (male type segment connection joint) of the first embodiment. [Figure 4] FIG. 2 is a schematic plan view of a segment connection joint (male type segment connection joint) of the first embodiment. [Diagram 5] FIG. 4 is a schematic partially enlarged cross-sectional view showing an example of use of a segment connection joint. [Figure 6] FIG. 4 is a schematic partially enlarged cross-sectional view showing an example of use of a segment connection joint. [Figure 7] FIG. 11 is a schematic front view of a segment connection joint (female type segment connection joint) of the second embodiment. [Figure 8] FIG. 11 is a schematic plan view of a segment connection joint (female segment connection joint) of the second embodiment. [Figure 9] FIG. 11 is a schematic front view of a segment connection joint (male type segment connection joint) of the second embodiment. [Figure 10] FIG. 11 is a schematic plan view of a segment connection joint (male type segment connection joint) of the second embodiment. [Figure 11] FIG. 11 is a schematic front view of a segment connection joint (female type segment connection joint) of embodiment 3. [Figure 12] FIG. 11 is a schematic plan view of a segment connection joint (female type segment connection joint) of embodiment 3. [Figure 13] FIG. 11 is a schematic front view of a segment connection joint (male type segment connection joint) of embodiment 3. [Figure 14] FIG. 11 is a schematic plan view of a segment connection joint (male type segment connection joint) of embodiment 3. [Figure 15]FIG. 13 is a schematic front view of a segment connection joint (female type segment connection joint) of a modified example of the third embodiment. [Figure 16] FIG. 13 is a schematic plan view of a segment connection joint (female type segment connection joint) of a modified example of the third embodiment. [Figure 17] FIG. 13 is a schematic front view of a segment connection joint (male type segment connection joint) of a modified example of the third embodiment. [Figure 18] FIG. 13 is a schematic plan view of a segment connection joint (male type segment connection joint) of a modified example of the third embodiment. [Figure 19] FIG. 13 is a schematic partial enlarged cross-sectional view showing an example of use of a segment connection joint according to a modified example of the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present disclosure will be described. Note that the same reference numerals are used to refer to the same components, and the description thereof will not be repeated.

[0011] (Embodiment 1) The segment connection joint (female segment connection joint 1, male segment connection joint 11) of the first embodiment will be described with reference to Figs. 1 to 6.

[0012] 1, 2, 5 and 6, a female segment connection joint 1, which is an example of a segment connection joint of the present embodiment, mainly includes a joint part 3, an anchor leg part 6a, and a support member 6r. The female segment connection joint 1 may further include an anchor bar 9.

[0013] The joint part 3, the anchor leg part 6a, and the support member 6r are formed of cast iron such as ductile cast iron. In this embodiment, the joint part 3, the anchor leg part 6a, and the support member 6r are a single, integrated part as a casting. The joint part 3, the anchor leg part 6a, and the support member 6r may be separate parts.

[0014] The joint part 3 is provided with a receiving hole 4 that receives the insertion part 14 (see Figures 3 and 4) of the male segment connection joint 11. The joint part 3 is provided with a slit 5 that communicates with the receiving hole 4. When the insertion part 14 (see Figures 3 and 4) of the male segment connection joint 11 is inserted into the receiving hole 4, the connection part 15 (see Figures 3 and 4) of the male segment connection joint 11 is inserted into the slit 5. The width of the slit 5 is greater than the thickness of the connection part 15 but smaller than the thickness of the insertion part 14.

[0015] The joint portion 3 includes a wall 3s. The wall 3s closes one end of the receiving hole 4 and one end of the slit 5. The wall 3s prevents concrete contained in the segment main body 31 (see Figures 5 and 6) from flowing into the receiving hole 4 when manufacturing the segment 30 (see Figures 5 and 6). The wall 3s increases the strength of the joint portion 3. The opening 4a of the receiving hole 4 and the opening of the slit 5 are formed on the opposite side to the wall 3s.

[0016] The anchor leg 6a is embedded in the segment body 31 to anchor the joint portion 3 to the concrete contained in the segment body 31 (see Figures 5 and 6). The anchor leg 6a includes a leg base end portion 6b, a leg main portion 6d, and a distal portion 6e.

[0017] The leg base end 6b is proximal to the joint portion 3 relative to the leg body portion 6d. The leg base end 6b is connected to the joint portion 3 and the leg body portion 6d. The outer diameter of the leg base end 6b is larger than the outer diameter of the leg body portion 6d.

[0018] The leg body 6d is connected to the leg base end 6b and the distal end 6e. A convex structure 8, a concave structure, or a combination thereof may be formed on the outer surface of the anchor leg 6a (leg body 6d). The height of the convex structure 8 from the outer surface of the anchor leg 6a (leg body 6d) may be, for example, 0.5 mm or more, or 1.0 mm or more. The depth of the concave structure from the outer surface of the anchor leg 6a (leg body 6d) may be, for example, 0.5 mm or more, or 1.0 mm or more.

[0019] The distal portion 6e is connected to the leg body portion 6d. The distal portion 6e is distal from the joint portion 3 with respect to the leg body portion 6d. The anchor leg portion 6a (e.g., the distal portion 6e) is provided with a hole 7 to which the anchor bar 9 is fixed. The hole 7 is also provided in the support member 6r (support plate 6s). The hole 7 may be a screw hole to which the anchor bar 9 is screwed. The central axis direction of the hole 7 may be the longitudinal direction of the anchor leg portion 6a.

[0020] In this embodiment, the number of anchor legs 6a provided in the female segment joint 1 is two, but it may be one or three or more. The female segment joint 1 may further include a rib 6g. The rib 6g reinforces the connection between the joint part 3 and the anchor leg 6a. The rib 6g prevents the anchor leg 6a from being deformed when the joint part 3 and the anchor leg 6a are integrally formed by casting. When the female segment joint 1 includes multiple anchor legs 6a, the multiple leg base ends 6b may be connected to each other by the rib 6g. The thickness of the rib 6g is smaller than the outer diameter of the leg base end 6b.

[0021] The support member 6r includes a support plate 6s and may further include a rib 6t.

[0022] The support plate 6s is connected to the anchor leg 6a (e.g., the distal portion 6e). When the female segment joint 1 has a plurality of anchor legs 6a, the support plate 6s may connect the plurality of anchor legs 6a to each other. The support plate 6s prevents the anchor leg 6a from being deformed when the joint portion 3 and the anchor leg 6a are integrally formed by casting. The support plate 6s extends in a direction intersecting the longitudinal direction of the anchor leg 6a. The longitudinal direction of the support plate 6s intersects the longitudinal direction of the anchor leg 6a. The support plate 6s extends in a direction intersecting the direction of the tensile force applied to the female segment joint 1 when the female segment joint 1 is connected to the male segment joint 11. The direction of the tensile force is, for example, the connection direction between the joint portion 3 and the anchor leg 6a (the lateral direction in Figs. 1 and 2).

[0023] The rib 6t reinforces the support plate 6s and increases the strength of the support plate 6s against the tensile force applied to the female segment connection joint 1. The main surface of the rib 6t extends along the longitudinal direction of the anchor leg 6a and the longitudinal direction of the support plate 6s.

[0024] Even if the female segment connection joint 1 includes the anchor leg 6a and the bearing plate 6s, when the resistance to the above-mentioned tensile force is insufficient, such as when the girder height H of the segment 30 is small, the anchor bar 9 is fixed to the hole 7 formed in the anchor leg 6a (e.g., the distal portion 6e). The shape of the anchor bar 9 is, for example, a straight shape. The anchor bar 9 may be screwed into the anchor leg 6a or may be fixed to the anchor leg 6a using an adhesive member 10 such as a resin adhesive (e.g., an epoxy resin adhesive) or mortar. Referring to FIG. 6, the anchor bar 9 is embedded in the segment body 31 to more strongly fix the joint part 3 to the concrete contained in the segment body 31. The anchor bar 9 is, for example, a deformed bar, a threaded bar, a bolt, or a round bar. When the anchor bar 9 is a deformed bar, a threaded bar, or a bolt, an uneven structure is formed on the surface of the anchor bar 9.

[0025] 3 to 6, a male segment connection joint 11, which is an example of a segment connection joint of the present embodiment, mainly includes a joint portion 13, an anchor leg portion 16a, and a support member 16r. The male segment connection joint 11 may further include an anchor bar 19.

[0026] The joint part 13, the anchor leg part 16a, and the support member 16r are formed of cast iron such as ductile cast iron. In this embodiment, the joint part 13, the anchor leg part 16a, and the support member 16r are a single, integrated part formed as a casting. The joint part 13, the anchor leg part 16a, and the support member 16r may be separate parts.

[0027] The joint portion 13 includes an insertion portion 14 and a connecting portion 15 . When connecting the male segment connection joint 11 to the female segment connection joint 1, the insert portion 14 is inserted into the receiving hole 4 provided in the female segment connection joint 1. The insert portion 14 includes a front end and a rear end. The insert portion 14 is inserted into the receiving hole 4 from the front end. The insert portion 14 may have a shape complementary to the receiving hole 4.

[0028] The connecting portion 15 connects the insertion portion 14 and the anchor leg portion 16a (leg base end portion 16b) to each other. The connecting portion 15 is thinner than the insertion portion 14. When connecting the male segment connection joint 11 to the female segment connection joint 1, the connecting portion 15 is inserted into the slit 5 provided in the female segment connection joint 1.

[0029] The anchor leg 16a is embedded in the segment body 36 to anchor the joint part 13 to the concrete contained in the segment body 36 (see Figs. 5 and 6). The anchor leg 16a is configured similarly to the anchor leg 6a. Specifically, the anchor leg 16a includes a leg base end 16b, a leg body part 16d, and a distal part 16e. The outer surface of the anchor leg 16a (leg body part 16d) may be formed with a convex structure 18, a concave structure, or a combination thereof similar to the convex structure 8, the concave structure, or a combination thereof of the female segment coupling joint 1. The anchor leg 16a (e.g., the distal part 16e) is provided with a hole 17 similar to the hole 7. The hole 17 is also provided in the support member 16r (support plate 16s).

[0030] In this embodiment, the number of anchor legs 16a provided in the male segment connection joint 11 is two, but it may be one, or three or more. The male segment connection joint 11 may further include a rib 16g similar to the rib 6g.

[0031] The support member 16r includes a support plate 16s. The support member 16r may further include a rib 16t similar to the rib 6t.

[0032] The support plate 16s is connected to the anchor leg 16a (e.g., the distal portion 16e). When the male segment connection joint 11 has a plurality of anchor legs 16a, the support plate 16s may connect the plurality of anchor legs 16a to each other. The support plate 16s prevents the anchor leg 16a from being deformed when the joint portion 13 and the anchor leg 16a are integrally formed by casting. The support plate 16s extends in a direction intersecting the longitudinal direction of the anchor leg 16a. The longitudinal direction of the support plate 16s intersects the longitudinal direction of the anchor leg 16a. The support plate 16s extends in a direction intersecting the direction of the tensile force applied to the male segment connection joint 11 when the male segment connection joint 11 is connected to the female segment connection joint 1. The direction of the tensile force is, for example, the connection direction between the joint portion 13 and the anchor leg portion 16a (the lateral direction in Figs. 3 and 4).

[0033] Even if the male segment connection joint 11 includes the anchor leg 16a and the bearing plate 16s, when the resistance to the above-mentioned tensile force is insufficient, such as when the girder height H of the segment 35 is small, the anchor bar 19 is fixed to the hole 17 formed in the anchor leg 16a (e.g., the distal portion 16e). The shape of the anchor bar 19 is, for example, a straight shape. The anchor bar 19 may be screwed to the anchor leg 16a or may be fixed to the anchor leg 16a using an adhesive member 20 such as a resin adhesive (e.g., an epoxy resin adhesive) or mortar. Referring to FIG. 6, the anchor bar 19 is embedded in the segment body 36 to more strongly fix the joint portion 13 to the concrete contained in the segment body 36. The anchor bar 19 is, for example, a deformed bar, a threaded bar, a bolt, or a round bar. When the anchor bar 19 is a deformed bar, a threaded bar, or a bolt, an uneven structure is formed on the surface of the anchor bar 19.

[0034] Referring to Figures 5 and 6, when a tunnel is constructed by assembling a number of concrete segments or a number of composite segments adjacent to each other in the circumferential direction (e.g., by the shield tunneling method), the walls of the tunnel are constructed by connecting a number of segments 30, 35.

[0035] Segment 30 includes a segment body 31 and a female segment connection joint 1. Segment body 31 includes a connection surface 31a. Female segment connection joint 1 is recessed from connection surface 31a of segment body 31. Segment 35 includes a segment body 36 and a male segment connection joint 11. Segment body 36 includes a connection surface 36a. Male segment connection joint 11 is exposed from connection surface 36a of segment body 36.

[0036] The segments 30, 35 are connected to each other by the female segment connection joint 1 and the male segment connection joint 11, with the connection surface 31a of the segment body 31 and the connection surface 36a of the segment body 36 facing each other. The segment bodies 31, 36 are formed mainly of reinforced concrete, for example. The segment bodies 31, 36 include, for example, concrete and reinforcing bars 32, 37 in the concrete. The segments 30, 35 are, for example, RC segments.

[0037] 5, when the girder height H of the segments 30, 35 is large, etc., and the resistance to the tensile force applied to the segment connection joints (female segment connection joint 1, male segment connection joint 11) is sufficient, the anchor bars 9, 19 are not fixed to the anchor legs 6a, 16a. The joints 3, 13 are fixed to the concrete contained in the segment bodies 31, 36 mainly by the anchor legs 6a, 16a and the bearing plates 6s, 16s.

[0038] In contrast, referring to Fig. 6, when the girder height H of the segments 30, 35 is small, for example, and the resistance to the tensile force applied to the segment connection joints (female segment connection joint 1, male segment connection joint 11) is insufficient, the anchor bars 9, 19 are fixed to the anchor legs 6a, 16a. The joints 3, 13 are anchored to the concrete contained in the segment bodies 31, 36 mainly by the anchor legs 6a, 16a, the bearing plates 6s, 16s, and the anchor bars 9, 19. The anchor bars 9, 19 increase the anchoring length of the segment connection joints in the concrete, thereby increasing the resistance to the tensile force.

[0039] The effects of the segment connecting joint of this embodiment will be described. The segment connection joints (female segment connection joint 1, male segment connection joint 11) of this embodiment include joint parts 3, 13, anchor legs 6a, 16a connected to the joint parts 3, 13, and support members 6r, 16r including support plates 6s, 16s. The support plates 6s, 16s are connected to the anchor legs 6a, 16a and extend in a direction intersecting the longitudinal direction of the anchor legs 6a, 16a. The anchor legs 6a, 16a are provided with holes 7, 17 to which anchor bars 9, 19 are fixed.

[0040] Therefore, by fixing the anchor bars 9, 19 to the holes 7, 17 as necessary, the segment connection joints (female segment connection joint 1, male segment connection joint 11) can be provided with the necessary resistance to the tensile force applied thereto, regardless of the girder height H. The segment connection joints can be used in a wider range of situations, and there is no need to increase the types of segment connection joints. The types of segment connection joints and the costs of the segment connection joints (manufacturing costs, management costs, and storage costs of the segment connection joints) can be reduced.

[0041] In the segment connection joints of this embodiment (female type segment connection joint 1, male type segment connection joint 11), a convex structure 8, 18, a concave structure, or a combination thereof is formed on the outer surface of the anchor legs 6a, 16a. The convex structure 8, 18, the concave structure, or a combination thereof further prevents the segment connection joint from coming out of the segment main body 31, 36 due to the tensile force applied to the segment connection joint. The segment connection joint is made smaller, and the cost of the segment connection joint is reduced.

[0042] In the segment connection joints of this embodiment (female segment connection joint 1, male segment connection joint 11), the holes 7 and 17 are threaded holes into which the anchor bars 9 and 19 are screwed. Therefore, the anchor bars 9 and 19 can be easily and firmly fixed to the anchor legs 6a and 16a.

[0043] The segment connection joints of this embodiment (female segment connection joint 1, male segment connection joint 11) further include anchor bars 9, 19 fixed to holes 7, 17. Therefore, even if the resistance to the tensile force applied to the segment connection joint is insufficient when the segment connection joint does not include the anchor bars 9, 19, the segment connection joint can be used by fixing the anchor bars 9, 19 to the segment connection joint.

[0044] (Embodiment 2) 7 to 10, a segment connection joint (female segment connection joint 1b, male segment connection joint 11b) of the second embodiment will be described.

[0045] 7 and 8, the female segment connection joint 1b of this embodiment has a similar configuration to the female segment connection joint 1 of embodiment 1, but differs mainly in the following respects. In the female segment connection joint 1b, the hole 7 is provided in the support member 6r (the support plate 6s and the rib 6t) rather than in the anchor leg 6a. The hole 7 penetrates the support member 6r (the support plate 6s and the rib 6t) in the longitudinal direction of the anchor leg 6a.

[0046] 9 and 10, the male segment connection joint 11b of this embodiment has a similar configuration to the male segment connection joint 11 of embodiment 1, but differs mainly in the following respects. In the male segment connection joint 11b, the hole 17 is provided in the support member 16r (the support plate 16s and the rib 16t) rather than in the anchor leg 16a. The hole 17 penetrates the support member 16r (the support plate 16s and the rib 16t) in the longitudinal direction of the anchor leg 16a.

[0047] The segment connection joint of the present embodiment has the following effects in addition to the effects of the segment connection joint of the first embodiment.

[0048] In the segment connection joints of this embodiment (female segment connection joint 1b, male segment connection joint 11b), the holes 7, 17 are provided in the support members 6r, 16r, and penetrate the support members 6r, 16r in the longitudinal direction of the anchor legs 6a, 16a. Therefore, by changing the length of the anchor bars 9, 19 protruding from the support members 6r, 16r on the opposite side of the joint parts 3, 13 to the support members 6r, 16r, the resistance to the tensile force applied to the segment connection joint can be adjusted. The segment connection joints can be used in a wider range of situations, and can reduce the types of segment connection joints and the costs of the segment connection joints.

[0049] (Embodiment 3) 11 to 14, a segment connection joint (female segment connection joint 1c, male segment connection joint 11c) of the third embodiment will be described.

[0050] 11 and 12, the female segment joint 1c of this embodiment has a similar configuration to the female segment joint 1b of the second embodiment, but is mainly different in the following respects. In the female segment joint 1c, the hole 7 penetrates the support member 6r (rib 6t) in a direction intersecting the longitudinal direction of the anchor leg 6a and the longitudinal direction of the support plate 6s. The anchor bar 9 may have, for example, a half U-shape or an L-shape. The hole 7 is not a screw hole, and the anchor bar 9 may be fixed to the support member 6r (rib 6t) using an adhesive member 10.

[0051] 13 and 14, the male segment joint 11c of this embodiment has a similar configuration to the male segment joint 11b of the second embodiment, but is mainly different in the following respects. In the male segment joint 11c, the hole 17 penetrates the support member 16r (rib 16t) in a direction intersecting the longitudinal direction of the anchor leg 16a and the longitudinal direction of the support plate 16s. The anchor bar 19 may have, for example, a half U-shape or an L-shape. The hole 17 is not a screw hole, and the anchor bar 19 may be fixed to the support member 16r using an adhesive member 20.

[0052] 15 and 16, in a female segment joint 1d of a modified embodiment of this embodiment, the central axis 9t of the anchor bar 9 is inclined with respect to the longitudinal direction of the anchor leg 6a. In a male segment joint 11d of a modified embodiment of this embodiment, the central axis 19t of the anchor bar 19 is inclined with respect to the longitudinal direction of the anchor leg 16a. The anchor bars 9 and 19 may have, for example, a U-shape.

[0053] The effects of the segment connecting joints of this embodiment (female segment connecting joints 1c, 1d, male segment connecting joints 11c, 11d) will be described.

[0054] In the segment connection joints of this embodiment (female segment connection joints 1c, 1d, male segment connection joints 11c, 11d), the holes 7, 17 are provided in the support members 6r, 16r, and penetrate the support members 6r, 16r in a direction intersecting the longitudinal direction of the anchor legs 6a, 16a and the longitudinal direction of the support plates 6s, 16s. Therefore, the segment connection joints have the same effects as the segment connection joint of the first embodiment.

[0055] The segment connection joints of this embodiment (female segment connection joints 1c, 1d, male segment connection joints 11c, 11d) further include anchor bars 9, 19 fixed to the holes 7, 17. The central axes 9t, 19t of the anchor bars 9, 19 are inclined with respect to the longitudinal direction of the anchor legs 6a, 16a. This prevents the anchor bars 9, 19 from interfering with members (e.g., reinforcing bars 32, 37, etc.) other than the segment connection joints in the segment main bodies 31, 36. This further expands the range of situations in which the segment connection joints can be used.

[0056] The embodiments 1-3 and their modifications disclosed herein should be considered as illustrative and not restrictive in all respects. For example, in the embodiments 1-3 and their modifications, the support plates 6s, 16s and the ribs 6t, 16t are connected to the distal parts 6e, 16e of the anchor legs 6a, 16a, but the support plates 6s, 16s and the ribs 6t, 16t may be formed at any positions of the anchor legs 6a, 16a. The scope of the present disclosure is indicated by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0057] 1,1b,1c,1d female segment connection joint, 3,13 connection part, 3s wall, 4 receiving hole, 4a opening, 5 slit, 6a,16a anchor leg part, 6b,16b leg base end, 6d,16d leg body part, 6e,16e distal part, 6r,16r support member, 6s,16s support plate, 6t,16t rib, 7,17 hole, 8,18 convex structure, 9,19 anchor bar, 9t,19t central axis, 10,20 adhesive member, 11,11b,11c,11d male segment connection joint, 14 insertion part, 15 connection part, 30,35 segment, 31,36 segment body, 31a,36a connection surface, 32,37 reinforcing bar.

Claims

1. A segment connection joint for a segment including concrete and reinforcing steel in the concrete, comprising: A joint portion, An anchor leg portion connected to the joint portion; A support member including a support plate and a rib, the joint portion, the anchor leg portion, and the support member are an integrally formed single part, The support plate is connected to a distal portion of the anchor leg from the joint portion and extends in a direction intersecting a longitudinal direction of the anchor leg, the rib is connected to the bearing plate and the distal portion of the anchor leg; A segment connection joint, wherein the distal portion of the anchor leg and the support plate, or the support plate and the rib, or the rib, are provided with holes into which anchor bars other than the reinforcing bars are fixed.

2. The segment connection joint according to claim 1 , wherein an outer surface of the anchor leg is formed with a convex structure, a concave structure, or a combination thereof.

3. 3. The segment connection joint according to claim 1, wherein the hole is provided in the anchor leg and the support plate, and penetrates the support plate in the longitudinal direction of the anchor leg.

4. The segment connection joint according to claim 1 , wherein the hole is a threaded hole into which the anchor bar is screwed.

5. The segment connection joint of claim 1 , further comprising an anchor bar secured to the hole.

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