JP2021123847A - Joint system - Google Patents

Abstract

To provide a joint system capable of improving workability when joining a pair of plate-shaped segments with a simple configuration.SOLUTION: A joint system 1A comprises: a plurality of first joints arranged along a horizontal direction D1 on a facing part 12 of a segment 10; a plurality of first opening parts 70a, which are opened one by one toward an upper side D21 of each of the plurality of first joints in a vertical direction D2; and a plurality of second joints, being the plurality of second joints arranged along the horizontal direction D1 on a facing part 22 of a segment 20, that overlap each of the first joints one by one in the vertical direction D2 by approaching each of the plurality of first joints from the upper side D21 through each of the plurality of first open parts 70a.SELECTED DRAWING: Figure 2

Description

The present invention relates to a joining system for joining a pair of plate-shaped segments.

Patent Document 1 describes that a synthetic deck that can prevent cracks in concrete, improve strength, and has good workability is provided (see abstract). Further, in Patent Document 1, when an RC or PC precast plate is arranged on a girder, a seal sponge is arranged between the girder and the RC or PC precast plate as a sealing member, and a non-shrink mortar is provided between the seal sponges. It is described that the RC or PC precast version is placed on the installation floor to form the installation floor (see paragraph number 0027). Further, Patent Document 1 describes that the joint reinforcing bars are projected from the RC or PC precast plate and the joined reinforcing bars are connected to each other by a lap joint (see paragraph number 0028).

In Patent Document 1, since the joining reinforcing bars protrude from each precast plate in two upper and lower stages (see FIG. 1), in order to overlap the joining reinforcing bars of the pair of precast plates in the vertical direction, each precast plate is placed in the horizontal direction. Although it is necessary to bring them closer, if a seal sponge is arranged as a seal member between the girder and the precast plate, each precast plate and the seal sponge interfere with each other when moving each precast plate in the horizontal direction, and the seal sponge is placed. Careful work is required because there is a risk of damage, and it is not easy to improve workability.

Japanese Unexamined Patent Publication No. 2006-219901

The present invention provides a joining system capable of improving workability when joining a pair of plate-shaped segments with a simple configuration.

In one aspect of the present invention, a pair of plate-shaped segments are oriented in a second direction along the thickness direction of each segment, with facing portions extending in the first direction along the width direction of each segment facing each other. It is a joining system that joins in the direction of right angles. The joint system is located on at least one side of each of the plurality of first joints arranged along the first direction and the plurality of first joints facing each other in one segment in the second direction. A plurality of first open portions that are opened one by one toward each other, and a plurality of second joints that are arranged along a first direction at opposite portions of the other segment, that is, a plurality of first joint portions. A plurality of second joints that overlap each of the plurality of first joints one by one in the second direction by approaching each of the joints from one side through each of the plurality of first open portions. It has a part.

According to this joining system, at least one side of each first joint arranged along the first direction in the second direction is open, so that each first joint and each second joint are joined. In order to overlap the portions in the second direction, the other segment can be linearly brought closer to one segment from one side in the second direction. Typically, at least above (one side) of each of the first joints arranged along the horizontal direction (first direction) along the width direction of the plate-like segment in the vertical direction (second direction). ) Is open, so that each first joint and each second joint are overlapped in the vertical direction (second direction), so that the other segment is vertically oriented (second direction) with respect to one segment. It can be lowered linearly from the upper side (one side) of (direction 2). Therefore, each segment can be efficiently arranged in a state where the facing portions of the respective segments are opposed to each other, that is, at a position where the segments can be joined to each other. Therefore, it is possible to improve workability when joining a pair of segments.

The joining system is fitted one by one from the second direction into each of a plurality of pairs of joints overlapping in the second direction of the plurality of first joints and the plurality of second joints. It is preferable to further include a plurality of first joining members that apply a wedge force between the pair of segments. By fitting each first joining member from the second direction (typically the vertical direction), a wedge effect is efficiently exhibited between the pair of segments in the first direction (typically the horizontal direction). And the pair of segments can be firmly joined. Therefore, when joining segments such as precast decks, rattling of each segment can be suppressed.

The plurality of first joints include a plurality of first loop-shaped portions that open one by one in each second direction of the plurality of first joints, and the plurality of second joints include. The plurality of second loop-shaped portions include a plurality of second loop-shaped portions that are opened one by one in each second direction of the plurality of second joint portions, and the plurality of first joint members are formed of the plurality of first loop-shaped portions. A plurality of first pressing portions, one pressed against each of the inner peripheral portions of the plurality of first loop-shaped portions so as to pull one segment toward the other segment via each. A plurality of firsts pressed against each of the inner circumferences of the plurality of second loops so as to pull the other segment toward one segment through each of the second loops of the. It is preferable to include the pressing portion of 2. The force applied when fitting each of the first joining members to each of the first loop-shaped portions and each second loop-shaped portion can be directly applied to the inner peripheral portion of each loop-shaped portion. can. Therefore, it is easy to efficiently and evenly apply the wedge force to the pair of segments in the first direction (typically in the horizontal direction).

The plurality of first joints include a plurality of first loop-shaped portions that open one by one in each second direction of the plurality of first joints, and the plurality of second joints include. The joining system includes a plurality of second loops that open one in each second direction of the plurality of second joints, and the joining system comprises a plurality of first loops and a plurality of second. A plurality of first insertion members that can be inserted one by one from the second direction may be further provided for each of the pair of loop-shaped portions overlapping in the second direction of the loop-shaped portion. .. By inserting each first insertion member from a second direction (typically in the vertical direction), it is efficiently inside each pair of loops in the first direction (typically in the horizontal direction). Each first insertion member can be arranged.

The plurality of first insertion members are a plurality of pairs so that each of the plurality of first insertion members does not fall out from each of the plurality of pairs of loop-shaped portions to one side and the other side in the second direction. It is preferable to include a plurality of first temporary fixing portions that are temporarily fixed to each of the loop-shaped portions of the above. Each first insertion member can be temporarily fixed to the inside of each pair of loop-shaped portions without performing binding work or the like on each pair of loop-shaped portions. Therefore, when filling a grout material such as concrete at the seam of a pair of segments, each first insertion member is arranged inside each pair of loop-shaped portions in the first direction (typically in the horizontal direction). The grout material can be cured as it is.

The joining system is arranged along the first direction at opposite parts of one segment so as to reposition the first and second directions with respect to the first joining. A first at a joint of three, a plurality of second openings that are opened one by one toward one side of each of the third joints in the second direction, and a portion facing the other segment. A plurality of fourth joints arranged along the direction of the above, by approaching each of the plurality of third joints from one side through each of the plurality of second open portions. It is preferable to further include each of the third joints of the above and a plurality of fourth joints that overlap one by one in the second direction.

According to this joining system, the opposite part of each segment is located in a first direction (typically horizontal) and in a second direction (typically vertical) (typically height). ) Can be arranged in two rows along the first direction (typically the horizontal direction). Therefore, when joining segments such as precast decks, by connecting reinforcing bars to each joint, it is possible to arrange the reinforcing bars in a well-balanced manner on the compression side and the tension side of each segment. Further, as with each of the first joints, one side (typically the upper side) of each third joint in the second direction (typically the vertical direction) is also open, so that each third joint is open. The first joint and each second joint are overlapped in the second direction (typically in the vertical direction), and at the same time, each third joint and each fourth joint are in the second direction. Can be stacked (typically in the vertical direction). Therefore, the other segment can be linearly brought closer to one segment from one side (typically, the upper side) in the second direction.

The joining system is fitted one by one from the second direction into each of the plurality of pairs of joints overlapping in the second direction of the plurality of third joints and the plurality of fourth joints. It is preferable to further include a plurality of second joining members that impart a wedge force between the pair of segments.

The plurality of third joints include a plurality of third loops that open one by one in each second direction of the plurality of third joints, and the plurality of fourth joints include. The plurality of fourth loop-shaped portions include a plurality of fourth loop-shaped portions that are opened one by one in each second direction of the plurality of fourth joint portions, and the plurality of second joint members are formed of the plurality of third loop-shaped portions. A plurality of third pressing portions, one of which is pressed against each of the inner peripheral portions of the plurality of third loop-shaped portions so as to pull one segment toward the other segment via each. A plurality of firsts pressed against each of the inner circumferences of the plurality of fourth loops so as to pull the other segment toward one segment through each of the fourth loops of the. It is preferable to include the pressing portion of 4.

The plurality of third joints include a plurality of third loops that open one at a time in each second direction of the plurality of third joints, and the plurality of fourth joints include a plurality of third joints. The joining system comprises a plurality of third loops and a plurality of fourth loops, including a plurality of fourth loops that open one in each second direction of the plurality of fourth joints. A plurality of second insertion members that can be inserted one by one from the second direction may be further provided for each of the pair of loop-shaped portions overlapping in the second direction of the loop-shaped portion. ..

The plurality of second insertion members are a plurality of pairs so that each of the plurality of second insertion members does not fall out from each of the plurality of pairs of loop-shaped portions to one side and the other side in the second direction. It is preferable to include a plurality of second temporary fixing portions that are temporarily fixed to each of the loop-shaped portions of the above.

Another aspect of the present invention is a second direction along the thickness direction of each segment, in which a pair of plate-shaped segments face each other with facing portions extending in the first direction along the width direction of each segment facing each other. When joining in a direction perpendicular to, one joint is placed on the opposite side of one segment and the other is placed on the opposite side of the other segment so as to overlap one joint in the second direction. It is a joint member that applies a wedge force between a pair of segments by being fitted from the second direction with respect to the joint portion of the above.

In another aspect of the present invention, a pair of plate-shaped segments are opposed to each other in a state in which facing portions extending in a first direction along the width direction of each segment face each other, and a second direction along the thickness direction of each segment. When joining in a direction perpendicular to It is an insertion member that can be inserted from the second direction with respect to the other loop-shaped portion.

The perspective view which shows the outline of the joined body provided with the joining system of 1st Embodiment. The perspective view which shows the state before facing each other of the facing part of a pair of segments. FIG. 5 is a cross-sectional view showing a state in which each first insertion member is inserted into each pair of loop-shaped portions after the facing portions of the pair of segments are opposed to each other. FIG. 5 is a cross-sectional view showing a state in which each first insertion member is temporarily fixed to each pair of loop-shaped portions. FIG. 3 is a perspective view showing an outline of a joined body including the joining system of the second embodiment. FIG. 5 is a cross-sectional view showing how each first joining member is fitted into each pair of loop-shaped portions. FIG. 5 is a cross-sectional view showing a state after each first joining member is fitted into each pair of loop-shaped portions. FIG. 3 is a perspective view showing an outline of a joined body including the joining system of the third embodiment. The perspective view which shows the state before facing each other of the facing part of a pair of segments. FIG. 5 is a cross-sectional view showing a state in which a transmission material of each second joining member is attached to each pair of loop-shaped portions after the facing portions of the pair of segments are opposed to each other. A cross-sectional view showing how the fitting material is fitted to each pair of loop-shaped portions via a transmission material. The cross-sectional view which shows the state after fitting the fitting material through the transmission material into each pair of loop-shaped portions. FIG. 3 is a perspective view showing an outline of a joined body including the joining system of the fourth embodiment. The perspective view which shows the state before facing each other of the facing part of a pair of segments. A cross-sectional view showing a state in which an fitting material is fitted into each pair of loop-shaped portions via a transmission material after the facing portions of the pair of segments are opposed to each other. The cross-sectional view which shows the state after fitting the fitting material through the transmission material into each pair of loop-shaped portions.

FIG. 1 shows an outline of a bonded body 100 provided with the bonded system 1A according to the first embodiment of the present invention. As shown in FIG. 1, the joint body 100 is filled in the joint S of the pair of plate-shaped segments 10 and 20, the joining system 1A for joining the pair of segments 10 and 20 to each other, and the pair of segments 10 and 20. It is provided with a grout hardening portion 30 in which the grout material is hardened. In FIG. 1, for convenience of explanation, the joining system 1A is illustrated by allowing the grout curing portion 30 to pass through.

Typical segments 10 and 20 are precast decks made of reinforced concrete, and are used when constructing superstructures of bridges, elevated roads, etc. (hereinafter, referred to as “bridges, etc.”). An example of the size and shape of the segments 10 and 20 is the length direction X along the extension direction (bridge axis direction) of the bridge or the like, and the horizontal and perpendicular direction to the bridge axis direction (hereinafter, "bridge axis perpendicular direction"). When the direction along the width direction is the width direction Y and the direction perpendicular to the length direction X and the width direction Y is the thickness direction Z, the length is about 2.0 to 2.5 m × the width is about 2.0 to 11. It is a flat plate with a thickness of 0 m and a thickness of about 0.2 to 0.3 m. In FIG. 1, the extensions of the segments 10 and 20 in the length direction X and the width direction Y are omitted. The same applies to the subsequent embodiments.

The materials, structures, sizes, shapes, etc. of the segments 10 and 20 are not limited thereto. For example, the segments 10 and 20 may be made of a material other than concrete, such as metal (steel, cast iron, etc.), resin, and the like. In addition, segments 10 and 20 include RC decks (reinforced concrete) such as PC decks (deck with prestress introduced), steel decks, and synthetic decks (deck made by synthesizing steel and concrete). It may have a structure other than the used floor slab). Further, the segments 10 and 20 may be formed in a plate shape other than a flat plate shape, such as a curved plate shape or a curved plate shape. The curved plate-shaped segments 10 and 20 are suitable for constructing an arc-shaped or cylindrical structure such as an inner wall of a tunnel.

One segment 10 faces the flat plate-shaped main body portion 11 and the opposing portion (side surface portion) 12 extending in the first direction (horizontal direction) D1 along the width direction Y so as to form the side surface of the main body portion 11. Includes a protruding portion 13 projecting from the portion 12 in a third direction (horizontal direction) D3 along the length direction X. The protruding portion 13 is closer to the end of the other side (lower side) D22 than the end of one side (upper side) D21 of the second direction (vertical direction) D2 along the thickness direction Z of the facing portion 12. It is provided. The other segment 20 includes a flat plate-shaped main body portion 21 and an opposing portion (side surface portion) 22 extending in a first direction (horizontal direction) D1 so as to form a side surface of the main body portion 21. The segments 10 and 20 are joined by the joining system 1A in the third direction (horizontal direction) D3, that is, in the bridge axis direction, with the facing portions 12 and 22 facing each other in the third direction (horizontal direction) D3. ing.

As shown in FIG. 1, the joining system 1A for joining a pair of segments 10 and 20 to each other includes a plurality of first joining portions 40 arranged along the horizontal direction D1 on facing portions 12 of the segments 10, and a plurality of first joining portions 40. A plurality of second joints 50 arranged along the horizontal direction D1 are included in the facing portions 22 of the segment 20 so as to overlap each of the first joints 40 in the vertical direction D2.

The plurality of first joints 40 include a plurality of first loop-shaped portions 41 which are opened one by one in each vertical direction D2 of the plurality of first joints 40. Each typical first loop-shaped portion 41 is a reinforcing bar (loop bar) formed in a loop shape, and has two linear portions 42 and 43 protruding from the facing portion 12 in the horizontal direction D3 and two straight lines. It includes a U-shaped curved portion 44 connecting the shaped portions 42, 43 to each other, and an opening 41h surrounded by the linear portions 42, 43 and the curved portion 44 and opened in the vertical direction D2. Further, the plurality of second joint portions 50 include a plurality of second loop-shaped portions 51 which are opened one by one in each vertical direction D2 of the plurality of second joint portions 50. Each typical second loop-shaped portion 51 is a loop streak, and connects two linear portions 52, 53 protruding in the horizontal direction D3 from the opposing portion 22 and two linear portions 52, 53 to each other. It includes a U-shaped curved portion 54 and an opening 51h surrounded by linear portions 52, 53 and a curved portion 54 and opened in the vertical direction D2. The joining system 1A has a vertical direction D2 for each of a pair of loop-shaped portions 41, 51 overlapping the vertical directions D2 of the plurality of first loop-shaped portions 41 and the plurality of second loop-shaped portions 51. It further includes a plurality of first insertion members 60 inserted one by one from. The segment 10 includes a plurality of reinforcing bars (not shown) arranged so as to be integrally or separately connected to the two linear portions 42, 43 of each first loop-shaped portion 41, and the segment 20 includes a plurality of reinforcing bars (not shown). Includes a plurality of reinforcing bars (not shown) arranged so as to be integrally or separately connected to the two linear portions 52, 53 of each second loop-shaped portion 51.

2 to 4 show how the pair of segments 10 and 20 are joined by the joining system 1A. FIG. 2 is a perspective view showing a state before the facing portions 12 and 22 of the segments 10 and 20 face each other, and FIG. 3 shows a pair of the facing portions 12 and 22 of the segments 10 and 20 after facing each other. A cross-sectional view showing how each of the first insertion members 60 is inserted into the loop-shaped portions 41 and 51, FIG. 4 shows provisional provision of each first insertion member 60 into each pair of loop-shaped portions 41 and 51. It is sectional drawing which shows the state which stopped.

As shown in FIG. 2, the joining system 1A further provides a plurality of first open portions 70a which are opened one by one toward the upper side D21 of each of the plurality of first loop-shaped portions 41 in the vertical direction D2. include. Each of the first open portions 70a of this example is a space in which no other loop-shaped portion or the like exists on the upper side D21 of each first loop-shaped portion 41. Further, the joining system 1A further includes a plurality of opening portions 70b which are opened one by one toward the lower side D22 of each of the plurality of second loop-shaped portions 51 in the vertical direction D2. Each open portion 70b of this example is a space in which no other loop-shaped portion or the like exists on the lower D22 of each second loop-shaped portion 51. Therefore, after the segment 20 is positioned on the upper D21 of the segment 10 by a crane or the like, each second loop-shaped portion 51 is opened from the upper D21 with respect to each first loop-shaped portion 41. It can be approached through the portion 70a. Therefore, in order to superimpose each first loop-shaped portion 41 and each second loop-shaped portion 51 in the vertical direction D2, the other segment 20 is moved in the horizontal direction D1 or D3 with respect to one segment 10. Instead, it can be lowered linearly from the upper side D21 in the vertical direction D2. Therefore, the segments 10 and 20 can be efficiently arranged in a state where the opposing portions 12 and 22 of the segments 10 and 20 face each other, that is, at a position where the segments 10 and 20 can be joined to each other. Further, even when a sealing material such as a sealing sponge is installed between the main girder (not shown) and each of the segments 10 and 20, the other segment 20 is set to the horizontal direction D1 with respect to one segment 10. Alternatively, since it is not necessary to move it to D3, damage to the sealing material can be suppressed. Therefore, the workability when joining the pair of segments 10 and 20 can be improved.

Next, as shown in FIG. 3, each first insertion member 60 is inserted from the upper side D21 with respect to each pair of loop-shaped portions 41 and 51 overlapping in the vertical direction D2. Each first insertion member 60 includes a posture capable of passing through an internal space IS that penetrates the inside of each pair of loop-shaped portions 41, 51, that is, each pair of openings 41h, 51h in the vertical direction D2. Therefore, by inserting each of the first insertion members 60 from the vertical direction D2, the first ones are efficiently inside the pair of loop-shaped portions 41 and 51 in the horizontal direction D1 (the paper surface penetrating direction in FIG. 3). Insertion member 60 can be arranged.

Next, as shown in FIG. 4, each pair of loop-shaped portions 41, 51 is rotated with the horizontal direction D1 (the paper penetration direction in FIG. 4) as the rotation axis for the posture of each first insertion member 60. Temporarily fix to. In the plurality of first insertion members 60, each of the plurality of first insertion members 60 does not fall out from each of the plurality of pairs of loop-shaped portions 41 and 51 to the upper side D21 and the lower side D22 in the vertical direction D2. As described above, a plurality of first temporary fixing portions 61 which are temporarily fixed to each of the plurality of pairs of loop-shaped portions 41 and 51 are included. Each of the first temporary fixing portions 61 of this example includes a portion 62a that is hooked on the first loop-shaped portion 41 and a portion 62b that is hooked on the second loop-shaped portion 42 so that the movement to the upper D21 is restricted. The movement of the portion 63a hooked on the first loop-shaped portion 41 and the portion 63b hooked on the second loop-shaped portion 51 and the movement of the horizontal D3 to one side are restricted so that the movement to the lower D22 is restricted. As described above, the portion 64 that is hooked on the first loop-shaped portion 41 is included. Therefore, the first insertion member 60 can be temporarily fixed to the inside of each pair of loop-shaped portions 41, 51 without performing binding work or the like on each pair of loop-shaped portions 41, 51. Further, after installing the closing member 80 so as to close at least a part of the gap between the protruding portion 13 of the segment 10 and the facing portion 22 of the segment 20, a grout material such as concrete is applied to the seam S of the pair of segments 10 and 20. At the time of filling, it is possible to prevent each first insertion member 60 from rising to the upper D21 or sinking to the lower D22. Therefore, it is possible to cure the grout material in a state where each of the first insertion members 60 remains arranged inside each pair of loop-shaped portions 41 and 51 over the horizontal direction D1 (the direction through which the paper surface is penetrated in FIG. 4). .. In this way, by forming the grout hardening portion 30 (see FIG. 1) with the first insertion member 60 being arranged inside each pair of loop-shaped portions 41, 51, the pair of segments 10, It is possible to suppress the occurrence of cracks inside each pair of loop-shaped portions 41 and 51 due to the tensile stress acting on 20. Reinforcing bars, pipes, and the like may be inserted inside each pair of loop-shaped portions 41, 51, but according to each first insertion member 60, each pair of loop-shaped portions 41, 51 may be inserted. Since the bundling work and the like can be omitted, it is easy to improve the construction efficiency. Further, each of the first temporary fixing portions 61 may further include a portion that is hooked on the second loop-shaped portion 51 so that the movement of the horizontal direction D3 to the other side is restricted.

FIG. 5 shows an outline of the joint body 200 provided with the joint system 1B according to the second embodiment of the present invention. As shown in FIG. 5, the joint body 200 is filled in the joint S of the pair of plate-shaped segments 10 and 20, the joining system 1B for joining the pair of segments 10 and 20 to each other, and the pair of segments 10 and 20. It is provided with a grout hardening portion 30 in which the grout material is hardened. In FIG. 5, for convenience of explanation, the joining system 1B is illustrated by allowing the grout hardening portion 30 to pass through. Further, in the present embodiment, the same components as those in the first embodiment may be designated by a common reference numeral and the description thereof may be omitted.

The plurality of first joint portions 40 of the joint system 1B are connected to each of the plurality of linear portions 45 protruding from the facing portion 12 in the horizontal direction D3 and the plurality of linear portions 45, and one in the vertical direction D2. It includes a plurality of first loop-shaped portions 41 that are opened one by one. Further, the plurality of second joining portions 50 of the joining system 1B are connected to each of the plurality of linear portions 55 protruding from the facing portion 22 in the horizontal direction D3 and the plurality of linear portions 55, and in the vertical direction D2. A plurality of first loop-shaped portions 51 opened one by one are included. The joining system 1B has a vertical direction D2 for each of a pair of loop-shaped portions 41, 51 overlapping the vertical directions D2 of the plurality of first loop-shaped portions 41 and the plurality of second loop-shaped portions 51. It further includes a plurality of first joining members 90 fitted one by one from. The segment 10 includes a plurality of reinforcing bars (not shown) arranged so as to be integrally or separately connected to the linear portion 45 of each first joint 40, and the segment 20 includes each second joint. Includes a plurality of reinforcing bars (not shown) arranged so as to be integrally or separately connected to the linear portion 55 of the portion 50.

6 and 7 show how the pair of segments 10 and 20 are joined by the joining system 1B. FIG. 6 is a cross-sectional view showing how the first joining member 90 is fitted into each pair of loop-shaped portions 41 and 51, and FIG. 7 is a cross-sectional view showing how the first joining member 90 is fitted into each pair of loop-shaped portions 41 and 51. It is sectional drawing which shows the state after fitting the joining member 90 of 1.

As shown in FIG. 6, also in the joining system 1B, after the segment 20 is positioned on the upper side D21 of the segment 10 by a crane or the like, each second loop-shaped portion 51 is attached to each first loop-shaped portion 41. By approaching the first loop-shaped portion 41 and the second loop-shaped portion 51 from the upper side D21 through the first open portion 70a, the first loop-shaped portion 41 and the second loop-shaped portion 51 can be overlapped in the vertical direction D2. Each first joining member 90 includes a truncated cone-shaped portion 91 that tapers from the upper D21 in the vertical direction D2 toward the lower D22. Each of the first loop-shaped portions 41 has an inner peripheral surface (inner peripheral portion) 41a that is inclined so as to taper from the upper side D21 toward the lower side D22 so as to come into contact with the outer peripheral surface 91a of the truncated cone-shaped portion 91. Includes an opening 41h surrounded by an inner peripheral surface 41a and opened in the vertical direction D2. Further, each of the second loop-shaped portions 51 has an inner peripheral surface (inner peripheral portion) that is inclined so as to taper from the upper side D21 toward the lower side D22 so as to come into contact with the outer peripheral surface 91a of the truncated cone-shaped portion 91. Includes 51a and an opening 51h surrounded by an inner peripheral surface 51a and opened in the vertical direction D2. Therefore, the outer peripheral surface 91a of the truncated cone-shaped portion 91 is the first pressing portion 92a pressed against the inner peripheral surface 41a of the first loop-shaped portion 41 and the inner peripheral surface 51a of the second loop-shaped portion 51. Includes a second pressing portion 92b that is pressed against. Therefore, when the truncated cone-shaped portion 91 is pushed from the upper side D21 with respect to the inner peripheral surfaces 41a and 51a, the first pressing portion 92a is pressed against the inner peripheral surface 41a, so that the first loop-shaped portion 41 The segment 10 is pulled toward the segment 20 via the second loop-shaped portion 51, and the second pressing portion 92b is pressed against the inner peripheral surface 51a so that the segment 20 is moved to the side of the segment 10 via the second loop-shaped portion 51. Pulled by. Therefore, the pair of segments 10 and 20 can be attracted to the third direction D3. Here, when the closing member 80 is installed so as to close at least a part of the gap between the protruding portion 13 of the segment 10 and the facing portion 22 of the segment 20, the pair of segments 10 and 20 are attracted to the third direction D3. As a result, the protruding portion 13 and the opposing portion 22 press (press each other) against each other with the closing member 80 sandwiched between them. The protruding portion 13 and the facing portion 22 may be directly pressed against each other without installing the closing member 80.

As shown in FIG. 7, the protruding portion 13 and the opposing portion 22 are pressed against each other with the closing member 80 sandwiched between them, and then the truncated cone-shaped portion 91 is further pushed into the lower D22 with respect to the inner peripheral surfaces 41a and 51a. Each of the segments 10 and 20 receives a reaction force from the closing member 80, and by pushing the truncated cone-shaped portion 91 against the reaction force, the first joining member 90 and each pair of loop-shaped portions 41 are pushed. , 51 can generate a wedge force. As described above, according to the joining system 1B, by fitting each first joining member 90 to each pair of loop-shaped portions 41 and 51, efficiency is achieved in the horizontal direction D1 (paper surface penetration direction in FIG. 7). The wedge effect can be well expressed between the pair of segments 10 and 20. Therefore, the pair of segments 10 and 20 can be firmly joined. Therefore, the rattling of the segments 10 and 20 can be suppressed.

In the present embodiment, an example is shown in which the pair of segments 10 and 20 are pulled in the third direction D3 by pushing the truncated cone-shaped portion 91 with respect to the inner peripheral surfaces 41a and 51a from the upper side D21. , The pair of segments 10 and 20 can also be drawn in the horizontal direction D1 (paper penetration direction in FIG. 6) and the third direction D3. That is, each pair of loop-shaped portions 41 and 51 may overlap with the vertical direction D2 in a state where the positions in the horizontal direction D1 (the paper surface penetrating direction in FIG. 6) are displaced, and the loop-shaped portions 41 and 51 overlap with each first loop-shaped portion 41. The state in which each of the second loop-shaped portions 51 overlaps the vertical direction D2 includes a state in which an internal space IS is formed so as to penetrate the pair of openings 41h and 51h in the vertical direction D2. Therefore, by pushing the conical outer peripheral surface 91a of the truncated cone-shaped portion 91 from the upper side D21 with respect to the inner peripheral surfaces 41a and 51a via the internal space IS, the pair of segments 10 and 20 are pushed in the horizontal direction D1. It can be pulled in the third direction D3 while being pulled in the (paper penetration direction of FIG. 6). Therefore, when joining the pair of segments 10 and 20, the alignment with respect to the bridge axis direction and the bridge axis perpendicular direction can be performed at the same time.

FIG. 8 shows an outline of the joint body 300 provided with the joint system 1C according to the third embodiment of the present invention. As shown in FIG. 8, the joint body 300 is filled in the joint S of the pair of plate-shaped segments 10 and 20, the joining system 1C for joining the pair of segments 10 and 20 to each other, and the pair of segments 10 and 20. It is provided with a grout hardening portion 30 in which the grout material is hardened. In FIG. 8, for convenience of explanation, the joining system 1C is illustrated by allowing the grout curing portion 30 to pass through. Further, in the present embodiment, the same components as those of the first and second embodiments may be designated by a common reference numeral and the description thereof may be omitted.

The joining system 1C includes a plurality of first joining portions 40 arranged along the horizontal direction D1 on the facing portions 12 of the segment 10, and one in the vertical direction D2 with respect to each of the plurality of first joining portions 40. A plurality of second joints 50 arranged along the horizontal direction D1 on the facing portions 22 of the segments 20 so as to overlap each other, and the horizontal D1 and the vertical D2 with respect to the plurality of first joints 40. A plurality of third joints 110 arranged along the horizontal direction D1 on the facing portions 12 of the segment 10 so as to change their positions, and one in the vertical direction D2 with respect to each of the plurality of third joints 110. A plurality of fourth joints 120 arranged along the horizontal direction D1 are included in the facing portions 22 of the segments 20 so as to overlap each other.

The plurality of third joints 110 include a plurality of third loop-shaped portions 111 that are opened one by one in each vertical direction D2 of the plurality of third joints 110. Each typical third loop-shaped portion 111 is a loop streak, and connects two linear portions 112, 113 protruding in the horizontal direction D3 from the opposing portion 12 and two linear portions 112, 113 to each other. It includes a U-shaped curved portion 114 and an opening 111h surrounded by linear portions 112 and 113 and curved portions 114 and opened in the vertical direction D2. Further, the plurality of fourth joints 120 include a plurality of fourth loop-shaped portions 121 opened one by one in each vertical direction D2 of the plurality of fourth joints 120. Each of the typical fourth loop-shaped portions 121 is a loop streak, and connects the two linear portions 122, 123 protruding from the facing portion 22 in the horizontal direction D3 and the two linear portions 122, 123 to each other. Includes a U-shaped curved portion 124 and an opening 121h surrounded by linear portions 122, 123 and a curved portion 124 and opened in the vertical direction D2.

The joining system 1C has a vertical direction D2 for each of a pair of loop-shaped portions 41, 51 overlapping the vertical directions D2 of the plurality of first loop-shaped portions 41 and the plurality of second loop-shaped portions 51. A plurality of first joining members 90 fitted one by one, and a plurality of pairs of loop-shaped portions overlapping the vertical direction D2 of the plurality of third loop-shaped portions 111 and the plurality of fourth loop-shaped portions 121. Each of 111 and 121 further includes a plurality of second joining members 130 fitted one by one from the vertical direction D2. Each of the first joining members 90 and each second joining member 130 of this example has a common configuration, and is a pair of transmission materials attached to each pair of loop-shaped portions 41, 51 (111, 121). It includes an fitting material 150 fitted between the pair of transmission materials 140a and 140b, a pair of transmission materials 140a and 140b, and a fastening material 160 for fastening the pair of transmission materials 140a and 140b and the fitting material 150, respectively. The segment 10 further includes a plurality of reinforcing bars (not shown) arranged so as to be integrally or separately connected to the two linear portions 112 and 113 of each third loop-shaped portion 111, and the segment 20 further includes a plurality of reinforcing bars (not shown). , Further includes a plurality of reinforcing bars (not shown) arranged so as to be integrally or separately connected to the two linear portions 122, 123 of each fourth loop-shaped portion 121.

9 to 12 show how the pair of segments 10 and 20 are joined by the joining system 1C. FIG. 9 is a perspective view showing a state before the facing portions 12 and 22 of the segments 10 and 20 face each other, and FIG. 10 shows a pair of the facing portions 12 and 22 of the segments 10 and 20 after facing each other. FIG. 11 is a cross-sectional view showing a state in which the transmission materials 140a and 140b of the second joining member 130 are attached to the loop-shaped portions 111 and 121, and FIG. 11 shows the transmission material 140a to each pair of loop-shaped portions 111 and 121. , 140b, FIG. 12 is a cross-sectional view showing how the fitting material 150 is fitted through the transmission materials 140a and 140b into each pair of loop-shaped portions 111 and 121. It is sectional drawing which shows the later state.

As shown in FIG. 9, the joining system 1C includes a plurality of first open portions 70a which are opened one by one toward the upper side D21 of each of the plurality of first loop-shaped portions 41 in the vertical direction D2. It further includes a plurality of second open portions 170a which are opened one by one toward the upper side D21 of each of the plurality of third loop-shaped portions 111 in the vertical direction D2. Each second open portion 170a of this example is a space in which no other loop-shaped portion or the like exists on the upper D21 of each third loop-shaped portion 111. Further, the joining system 1C includes a plurality of opening portions 170b which are opened one by one toward the lower side D22 of each of the plurality of fourth loop-shaped portions 121 in the vertical direction D2. Each open portion 170b of this example is a space in which no other loop-shaped portion or the like exists on the lower side D22 of each fourth loop-shaped portion 121.

According to the joining system 1C, loop-shaped portions 41 and 111 having different positions (height) in the horizontal direction D1 and a vertical direction D2 are arranged in two rows along the horizontal direction D1 on the facing portion 12 of the segment 10. , Loop-shaped portions 51, 121 having different positions (height) in the horizontal direction D1 and a position (height) in the vertical direction D2 can be arranged in two rows along the horizontal direction D1 on the facing portions 22 of the segment 20. Therefore, the reinforcing bars can be arranged in a well-balanced manner on the compression side and the tension side of each of the segments 10 and 20. Further, similarly to each first loop-shaped portion 41, the upper side D21 of each third loop-shaped portion 111 in the vertical direction D2 is also open, so that each first loop-shaped portion 41 and each second loop-shaped portion 41 are open. At the same time that the loop-shaped portion 51 is overlapped in the vertical direction D2, each third loop-shaped portion 111 and each fourth loop-shaped portion 121 can be overlapped in the vertical direction D2. Therefore, the other segment 20 can be linearly lowered from the upper side D21 in the vertical direction D2 with respect to one segment 10. The first loop-shaped portion 41 and each third loop-shaped portion 111 of this example are regularly arranged alternately from one side to the other side in the horizontal direction D1, but the arrangement is random. It may be. Further, in the facing portion 12 (22) of the segment 10 (20), three or more rows of loop-shaped portions having different positions (heights) in the horizontal direction D1 and the vertical direction D2 are arranged along the horizontal direction D1. It may be.

Next, as shown in FIG. 10, a pair of transmission materials 140a and 140b are attached to each pair of loop-shaped portions 111 and 121 so as to face each other in the horizontal direction D3. One transmission material 140a has a recess (third pressing portion) 141a recessed along the inner peripheral portion 111a of the third loop-shaped portion 111, and the other transmission material from the upper side D21 toward the lower side D22. It includes an inner peripheral surface 142a inclined with respect to the vertical direction D2 so as to approach 140b. The other transmission material 140b has a recess (fourth pressing portion) 141b recessed along the inner peripheral portion 121a of the fourth loop-shaped portion 121, and one transmission material from the upper side D21 toward the lower side D22. It includes an inner peripheral surface 142b inclined with respect to the vertical direction D2 so as to approach 140a.

Next, as shown in FIG. 11, the fitting member 150 is fitted between the pair of transmission members 140a and 140b using the fastening member 160. The fastening member 160 includes a bolt 161 and a nut 162, a washer 163 on which the bolt head 161a is placed, and a washer 164 sandwiched between the pair of transmission members 140a and 140b and the nut 162. The fitting material 150 includes a truncated cone-shaped portion 151 that tapers from the upper side D21 in the vertical direction D2 toward the lower side D22. The truncated cone-shaped portion 151 includes an outer peripheral surface 151a that is inclined so as to taper from the upper D21 to the lower D22 so as to come into contact with the inner peripheral surface 142a of the transmission material 140a and the inner peripheral surface 142b of the transmission material 140b. It includes a through hole 152 that penetrates the truncated cone portion 151 in the vertical direction D2 so that the bolt shaft portion 161b can be inserted, and a mounting surface 153 on which the bolt head portion 161a is placed via the washer 163. Therefore, when the bolt head 161a is rotated while the rotation of the nut 162 is stopped, the bolt head 161a presses the mounting surface 153 against the lower D22, so that the truncated cone-shaped portion 151 has an inner peripheral surface 142a, By being pushed against the 142b, the pair of transmission materials 140a and 140b are pushed apart so as to be separated from each other in the third direction D3. As a result, the third pressing portion (recessed portion) 141a of the transmission material 140a is pressed against the inner peripheral portion 111a, so that the segment 10 is pulled toward the segment 20 via the third loop-shaped portion 111, and the segment 10 is pulled toward the segment 20. When the fourth pressing portion (recessed portion) 141b of the transmission material 140b is pressed against the inner peripheral portion 121a, the segment 20 is pulled toward the segment 10 via the fourth loop-shaped portion 121. Therefore, the pair of segments 10 and 20 can be attracted to the third direction D3. The same applies to each pair of loop-shaped portions 41 and 51. Here, when the closing member 80 is installed so as to close at least a part of the gap between the protruding portion 13 of the segment 10 and the facing portion 22 of the segment 20, the pair of segments 10 and 20 are attracted to the third direction D3. As a result, the protruding portion 13 and the opposing portion 22 press (press each other) against each other with the closing member 80 sandwiched between them.

As shown in FIG. 12, when the bolt head 161a is further rotated from the state where the protruding portion 13 and the facing portion 22 are pressed against each other with the closing member 80 sandwiched between them, the segments 10 and 20 are repelled from the closing member 80. A force is received, but by fitting the truncated cone-shaped portion 151 between the pair of transmission members 140a and 140b so as to oppose the reaction force, each joining member 90 (130) and each pair of loop-shaped portions 41 and 51 A wedge force can be generated between (111 and 121). As described above, according to the joining system 1C, each joining member 90 (130) is fitted to each pair of loop-shaped portions 41, 51 (111, 121) to penetrate the horizontal direction D1 (paper surface penetration of FIG. 12). The wedge effect can be efficiently expressed between the pair of segments 10 and 20 over the direction). Therefore, the pair of segments 10 and 20 can be firmly joined. Therefore, the rattling of the segments 10 and 20 can be suppressed.

FIG. 13 shows an outline of the joint body 400 provided with the joint system 1D according to the fourth embodiment of the present invention. As shown in FIG. 13, the joint body 400 is filled in the joint S of the pair of plate-shaped segments 10 and 20, the joining system 1D for joining the pair of segments 10 and 20 to each other, and the pair of segments 10 and 20. It is provided with a grout hardening portion 30 in which the grout material is hardened. In the present embodiment, the same components as those in the first to third embodiments may be designated by a common reference numeral and the description thereof may be omitted.

One segment 10 has a flat plate-shaped main body portion 11, an opposing portion (side surface portion) 12 extending in the horizontal direction D1 so as to form a side surface of the main body portion 11, and a protruding portion protruding from the facing portion 12 in the horizontal direction D3. 13 and is included. The protruding portion 13 is provided closer to the end portion of the lower side D22 than the end portion of the upper side D21 in the vertical direction D2 of the facing portion 12. The other segment 20 includes a flat plate-shaped main body portion 21, an opposing portion (side surface portion) 22 extending in the horizontal direction D1 so as to form a side surface of the main body portion 21, and a protruding portion protruding from the facing portion 22 in the horizontal direction D3. 23 and is included. The protruding portion 23 is provided closer to the end portion of the upper side D21 than the end portion of the lower side D22 of the facing portion 22 in the vertical direction D2. In the segments 10 and 20, the facing portions 12 and 22 face each other in the horizontal direction D3, and the protruding portions 13 and 23 overlap each other in the vertical direction D2. It is joined to.

14 to 16 show how the pair of segments 10 and 20 are joined by the joining system 1D. FIG. 14 is a perspective view showing a state before the facing portions 12 and 22 of the segments 10 and 20 face each other, and FIG. 15 shows a pair of the facing portions 12 and 22 of the segments 10 and 20 after facing each other. A cross-sectional view showing how the fitting material 150 is fitted into the loop-shaped portions 111 and 121 via the transmission materials 140a and 140b, FIG. 16 shows the transmission material 140a, with respect to each pair of loop-shaped portions 111 and 121. It is sectional drawing which shows the state after fitting the fitting material 150 through 140b. In FIG. 14, for convenience of explanation, the joining system 1A is illustrated by allowing the main body 21 of the segment 20 to pass through.

As shown in FIGS. 14 and 15, the protruding portion 13 of the segment 10 has a first length toward the upper side D21 with reference to the lower end surface (bottom surface) 11a of the lower side D22 of the main body portion 11 in the vertical direction D2. It includes a first protrusion 14 having an L11 and a second protrusion 15 having a second length L21 that is larger than the first length L11. The first protruding portion 14 and the second protruding portion 15 of this example are arranged alternately and regularly from one side to the other side in the horizontal direction D1. Further, the segment 10 of this example is a transmission material in a state where about half of the lower side D22 of the loop-shaped portion 41 (111) and the recess 141a are in contact with the inner peripheral portion 41a (111a) of the loop-shaped portion 41 (111). A part of the lower D22 of the 140a and the nut 162 and the washer 164 of the fastening member 160 were manufactured in a factory or the like so as to be embedded in the protrusion 14 (15) (the nut 162 does not rotate). It is a precast floor board.

Further, the protruding portion 23 of the segment 20 has a first protruding portion having a first length L21 toward the lower D22 with reference to the upper end surface (upper surface) 21a of the upper D21 in the vertical direction D2 of the main body 21. 24 includes a second protrusion 25 having a second length L22 smaller than the first length L21, and a through hole 26 penetrating each of the protrusions 24 and 25 in the vertical direction D2. The first protruding portion 24 and the second protruding portion 25 of this example are arranged alternately and regularly from one side to the other side in the horizontal direction D1. Further, the segment 20 of this example is a transmission material in a state where about half of the upper side D21 of the loop-shaped portion 51 (121) and the recess 141b are in contact with the inner peripheral portion 51a (121a) of the loop-shaped portion 51 (121). A part of the upper D21 of the 140b and the nut 162 and the washer 164 of the fastening member 160 were manufactured in a factory or the like so as to be embedded in the protrusion 24 (25) (the nut 162 does not rotate). It is a precast floor board.

According to the joining system 1D, since the upper side D21 of each first loop-shaped portion 41 and each third loop-shaped portion 111 in the vertical direction D2 is open, each first loop-shaped portion 41 and each first loop-shaped portion 41 are opened. At the same time that the loop-shaped portion 51 of 2 is overlapped in the vertical direction D2, each third loop-shaped portion 111 and each fourth loop-shaped portion 121 can be overlapped in the vertical direction D2. Further, the first protrusions 14 and the first protrusions 24 are overlapped in the vertical direction D2, and at the same time, the second protrusions 15 and the second protrusions 25 are overlapped in the vertical direction D2. You can also. Therefore, the other segment 20 can be linearly lowered from the upper side D21 in the vertical direction D2 with respect to one segment 10, and the seams S of the pair of segments 10 and 20 can be formed at the protrusions 14, 15, respectively. It can be filled with 24 and 25. Therefore, it is possible to reduce the gap of the seam S, reduce the filling amount of the grout material, and shorten the construction period.

Next, as shown in FIG. 15, the fitting material 150 is fitted between the pair of transmission materials 140a and 140b using the fastening material 160. According to the joining system 1D, since the pair of transmission materials 140a and 140b, the nut 162 and the washer 164 are already embedded (pre-installed) in the pair of segments 20 and 10, respectively, each pair of loop-shaped portions 111 , 121 can omit the work of attaching the pair of transmission materials 140a and 140b and the work of stopping the rotation of the nut 162. Therefore, after each pair of loop-shaped portions 41 and 51 and each pair of loop-shaped portions 111 and 121 are overlapped in the vertical direction D2, a fastening member 160 is used between the pair of transmission members 140a and 140b. The work of fitting the fitting material 150 can be performed. As a result, the pair of segments 10 and 20 can be attracted to the third direction D3 as in the third embodiment. The same applies to each pair of loop-shaped portions 41 and 51.

Further, the truncated cone-shaped portion 151 of the fitting material 150 of this example is provided on the lower side D22 of the first outer peripheral surface 151a so as to taper with a steeper inclination than the first outer peripheral surface 151a. The surface 151b is further included. Therefore, after the fitting material 150 is lowered through the through holes 26 of the protruding portions 24 and 25, the second outer peripheral surface 151b is placed between the pair of transmission materials 140a and 140b prior to the first outer peripheral surface 151a. By inserting the fitting material 150 toward, the fitting material 150 can be smoothly guided between the pair of transmission materials 140a and 140b. When joining the pair of segments 10 and 20, it is preferable that the second outer peripheral surface 151b is provided on at least two truncated cone-shaped portions 151. The other pair of loop-shaped portions 111 and 121 can be overlapped (positioned) in the vertical direction D2 with the fitting member 150 guided through the second outer peripheral surfaces 151b at the two locations as a base point. Therefore, all the other fitting materials 150 can be smoothly fitted between the pair of transmission materials 140a and 140b.

As shown in FIG. 16, when the closing member 80 is installed so as to close at least a part of the gap between the protruding portion 13 of the segment 10 and the facing portion 22 of the segment 20, the pair of segments 10 and 20 are in the third direction. By being attracted to D3, the protruding portion 13 and the opposing portion 22 press (press each other) against each other with the closing member 80 sandwiched between them. When the bolt head 161a is further rotated from the state where the protruding portion 13 and the facing portion 22 are pressed against each other with the closing member 80 sandwiched between them, each of the segments 10 and 20 receives a reaction force from the closing member 80. By fitting the truncated cone-shaped portion 151 between the pair of transmission members 140a and 140b so as to oppose the force, each joining member 90 (130) and each pair of loop-shaped portions 41, 51 (111, 121) are joined. Wedge force can be generated in between. As a result, similarly to the third embodiment, in the joining system 1D as well, the wedge effect can be efficiently exhibited between the pair of segments 10 and 20 over the horizontal direction D1 (the paper surface penetration direction in FIG. 16). Therefore, the pair of segments 10 and 20 can be firmly joined. Therefore, the rattling of the segments 10 and 20 can be suppressed.

The present invention is not limited to the above-described embodiment, but includes those specified in the claims. For example, in the flat plate-shaped segments 10 and 20, the length direction X may be the direction along the direction perpendicular to the bridge axis, and the width direction Y may be the direction along the bridge axis direction. In this case, the first direction D1 is the bridge axis direction. The direction along the bridge axis, the second direction D2 is the direction along the thickness direction, and the third direction D3 is the direction along the direction perpendicular to the bridge axis, so that the flat plates 10 and 20 can be joined to each other in the direction perpendicular to the bridge axis. .. Further, the first direction D1 and the third direction D3 are not limited to the horizontal direction, and the second direction D2 is not limited to the vertical direction. For example, in the curved plate-shaped segments 10 and 20, when the length direction is along the extension direction (axial direction) of the tunnel and the width direction is along the circumferential direction of the inner wall of the tunnel, the first direction D1 Is a direction along the circumferential direction, the second direction D2 is a direction along the thickness direction, and the third direction D3 is a direction along the axial direction, so that the curved plate-shaped segments 10 and 20 can be joined in the axial direction. .. In the curved plate-shaped segments 10 and 20, the length direction may be the direction along the circumferential direction of the inner wall of the tunnel and the width direction may be the direction along the extension direction (axial direction) of the tunnel. In this case, the first The direction D1 is along the axial direction, the second direction D2 is along the thickness direction, and the third direction D3 is along the circumferential direction, and the curved plate-shaped segments 10 and 20 are joined in the circumferential direction. be able to. Further, in the third and fourth embodiments, the first joining member 90 is fitted into each pair of loop-shaped portions 41 and 51, and the second joining member 90 is fitted into each pair of loop-shaped portions 111 and 121. The first insertion member 60 in the first embodiment is inserted into each pair of loop-shaped portions 41, 51, and the joining member 130 is fitted into each pair of loop-shaped portions 111, 121. On the other hand, each second insertion member having the same configuration as each first insertion member 60 may be inserted.

In the above embodiment, the expressions "along", "horizontal", "right angle", and "vertical" are used, but strictly speaking, they are "along", "horizontal", "right angle", and "vertical". Does not need. That is, each of these expressions allows for deviations in manufacturing accuracy, installation accuracy, and the like.

1A, 1B, 1C, 1D joint system, 10 one segment, 20 other segment, D1 first direction, D2 second direction, 40 first joint, 70a first open, 50 second Joint, 90 1st joint member, 41 1st loop-shaped part, 51 2nd loop-shaped part, 92a 1st pressing part, 92b 2nd pressing part, 60 1st insertion member, 61 1st temporary fixing part, 110 3rd joint part, 170a 2nd open part, 120 4th joint part, 130 2nd joint member, 111 3rd loop-shaped part, 121 4th loop-shaped part , 141a 3rd pressing part, 141b 4th pressing part

Claims (12)

Joining a pair of plate-shaped segments in a direction perpendicular to the second direction along the thickness direction of each segment, with facing portions extending in the first direction along the width direction of each segment facing each other. It ’s a system,
A plurality of first joints arranged along the first direction on opposite portions of one segment,
A plurality of first open portions opened one by one toward at least one side of each of the plurality of first joint portions in the second direction.
A plurality of second joints arranged in opposite portions of the other segment along the first direction, and the plurality of first joints from the one side with respect to each of the plurality of first joints. A joining system comprising each of the plurality of first joints and a plurality of second joints that overlap one by one in the second direction by approaching each of the open portions of 1. In claim 1,
By fitting each of the plurality of first joints and the plurality of pairs of joints overlapping in the second direction of the plurality of second joints one by one from the second direction. A joining system further comprising a plurality of first joining members that impart a wedge force between the pair of segments. In claim 2,
The plurality of first joints include a plurality of first loop-shaped portions that open one by one in the second direction of each of the plurality of first joints.
The plurality of second joints include a plurality of second loop-shaped portions that open one by one in the second direction of each of the plurality of second joints.
The plurality of first joining members of the plurality of first loop-shaped portions so as to pull the one segment toward the other segment via each of the plurality of first loop-shaped portions. A plurality of first pressing portions, one pressed against each of the inner peripheral portions,
One push is applied to each of the inner peripheral portions of the plurality of second loop-shaped portions so as to pull the other segment toward the one segment through each of the plurality of second loop-shaped portions. A joining system that includes a plurality of second presses to be applied. In claim 1,
The plurality of first joints include a plurality of first loop-shaped portions that open one by one in the second direction of each of the plurality of first joints.
The plurality of second joints include a plurality of second loop-shaped portions that open one by one in the second direction of each of the plurality of second joints.
Insert one from the second direction into each of the plurality of first loop-shaped portions and the plurality of pairs of loop-shaped portions overlapping in the second direction of the plurality of second loop-shaped portions. A joining system further comprising a plurality of possible first insertion members. In claim 4,
The plurality of first insertion members are such that each of the plurality of first insertion members does not fall out from each of the plurality of pairs of loop-shaped portions to one side and the other side in the second direction. A joining system including a plurality of first temporary fixing portions that are temporarily fixed to each of the plurality of pairs of loop-shaped portions. In any one of claims 1 to 5,
A plurality of portions arranged along the first direction at opposite portions of the one segment so as to change the positions of the first direction and the second direction with respect to the plurality of first joints. With the third joint,
A plurality of second open portions opened one by one toward the one side in the second direction of each of the plurality of third joint portions.
A plurality of fourth joints arranged in opposite portions of the other segment along the first direction, and the plurality of joints from one side with respect to each of the plurality of third joints. A joining system further comprising each of the plurality of third joints and a plurality of fourth joints that overlap one by one in the second direction by approaching through each of the second openings. In claim 6,
By fitting each of the plurality of third joints and the plurality of pairs of joints overlapping in the second direction of the plurality of fourth joints one by one from the second direction. A joining system further comprising a plurality of second joining members that impart a wedge force between the pair of segments. In claim 7,
The plurality of third joints include a plurality of third loop-shaped portions that open one by one in the second direction of each of the plurality of third joints.
The plurality of fourth joints include a plurality of fourth loop-shaped portions that open one by one in the second direction of each of the plurality of fourth joints.
The plurality of second joining members of the plurality of third loop-shaped portions so as to pull the one segment toward the other segment via each of the plurality of third loop-shaped portions. A plurality of third pressing portions, one pressed against each of the inner peripheral portions,
Push one on each of the inner peripherals of the plurality of fourth loops so as to pull the other segment toward the one segment via each of the plurality of fourth loops. A joining system that includes a plurality of fourth presses to be applied. In claim 6,
The plurality of third joints include a plurality of third loop-shaped portions that open one by one in the second direction of each of the plurality of third joints.
The plurality of fourth joints include a plurality of fourth loop-shaped portions that open one by one in the second direction of each of the plurality of fourth joints.
Insert one from the second direction into each of the plurality of third loop-shaped portions and the plurality of pairs of loop-shaped portions overlapping in the second direction of the plurality of fourth loop-shaped portions. A joining system further comprising a plurality of possible second insertion members. In claim 9.
The plurality of second insertion members are such that each of the plurality of second insertion members does not fall out from each of the plurality of pairs of loop-shaped portions to one side and the other side in the second direction. A joining system including a plurality of second temporary fixing portions that are temporarily fixed to each of the plurality of pairs of loop-shaped portions. When joining a pair of plate-shaped segments in a direction perpendicular to the second direction along the thickness direction of each segment, with facing portions extending in the first direction along the width direction of each segment facing each other. With respect to one joint located on the opposite side of one segment and the other joint arranged on the opposite side of the other segment so as to overlap the one joint in the second direction. A joining member that applies a wedge force between the pair of segments by being fitted from the second direction. When joining a pair of plate-shaped segments in a direction perpendicular to the second direction along the thickness direction of each segment, with facing portions extending in the first direction along the width direction of each segment facing each other. In addition, one loop-shaped portion arranged on the opposite portion of one segment and the other loop-shaped portion arranged on the opposite portion of the other segment so as to overlap the one loop-shaped portion in the second direction. An insertion member that can be inserted from the second direction.

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