JP2011140794A - Joint structure, joint method, and joint plate of reinforcing ring for liner plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure, joint method, and joint plate of a reinforcing ring for a liner plate extremely excellent in construction efficiency and economic efficiency. <P>SOLUTION: In this joint plate 2 attached to the natural ground side flanges 11 of reinforcing ring pieces 1, upper joint pieces 3, 3 are attached to the upper parts of the natural ground side flanges 11, 11 of the reinforcing ring pieces 1, 1 facing each other, respectively, a lower joint piece 4 is attached to the lower part thereof while riding both ends of the reinforcing ring pieces 1. The upper joint pieces 3, 3 are fitted to the recesses of the lower joint piece 4 so as to be brought into contact with each other to transmit a stress therebetween so that the lower joint piece 4 is brought into contact with the upper joint pieces 3, 3 fixed to the upper parts of the natural ground side flanges 11, 11 so as to transmit a stress therebetween. Bolt holes 11a are provided to the lower sides of the natural ground side flanges 11, 11, bolt holes 4a are provided to the lower joint piece 4, and nuts 6 are fastened to bolts 5 inserted into the bolt holes 11a, 4a aligned with each other. The lower joint piece is fixed to both natural ground side flanges. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention belongs to the technical field of liner plates used for the lining of horizontal shafts such as shafts for propulsion methods, shafts for deep foundation methods, drainage wells, etc., or drainage tunnels. The present invention relates to a joint structure, a joint method, and a joint plate of a reinforcing ring for a liner plate that is attached up and down with respect to a wall of a shaft constructed to be connected.

In order to increase the strength of the liner plate, a reinforcing ring may be provided along a circumferential flange of the liner plate.
The reinforcing ring is generally formed by bolting a plurality of reinforcing ring pieces made of an H-shaped steel formed in an arc shape via a joint plate. The plurality of reinforcing ring pieces are arranged on the natural ground side and the inside of the well, the ends of the reinforcing ring pieces face each other in the circumferential direction, and are joined to each other manually by a worker inside the well. A reinforcing ring having a closed cross-sectional shape such as a circular shape, an oval shape, or a rectangular shape matching the cross-sectional shape of the plate is completed.
As for the joining work of the reinforcing ring pieces constituting the reinforcing ring, the joining work of the pit inner flange can be surely performed without trouble while visually confirming by the worker, but the joining work of the natural ground side flange is performed by the worker. There are many operations that are difficult to confirm by visual inspection and are carried out in a groping state, which is very cumbersome and remains a problem in terms of workability.
By the way, the most difficult part to check visually by the worker is the top of the flange on the natural ground side, and the bolt joining work that puts the joint plate on this part and fastens the nut through the bolt is very troublesome. It is difficult.

  Based on the above problems, various inventions have been proposed in which the shape of the joint plate applied to the ground-side flange is devised so as to quickly perform the joining operation of the ground-side flange of the reinforcing ring piece (for example, (See Patent Documents 1 and 2).

  In Patent Document 1, as shown in FIGS. 1 and 2 of Patent Document 1, a bolt hole (18) is provided at the lower end, and the upper end is hung on the upper end of the flange of the H-section steel (20, 20). Using the coupling plate (10) formed in a hook-shaped hook shape, the hook-shaped hooking portion (12) is provided so as to evenly straddle the upper end of the ground flange of the H-shaped steel (20, 20) facing each other. An invention is disclosed in which the joint plate (10) is positioned by latching and bolted using the bolt hole (18) at the lower end of the joint plate (10).

  In Patent Document 2, as shown in FIGS. 1 and 2 of Patent Document 2, the left half part (72) and the right half part (71) are formed in a step difference (in the illustrated example, the right half part is lowered by one step). The right half (71) of the joint plate (7), in which the left half (72) is fixed to the natural ground flange (4) of the left reinforcing ring (2), and the right side reinforcement An invention is disclosed in which a projecting portion (43) provided at the lower end portion of the natural mountain side flange (4) at the end portion of the ring (2) is bolted.

Japanese Patent Laid-Open No. 62-288294 JP 2003-3781 A

  In the inventions disclosed in Patent Documents 1 and 2, the upper part of the ground mountain side flange that is most difficult for the worker eliminates the bolt joint work by groping, and joins the ends of the reinforcing ring pieces facing each other. Looks like they are solving the problem.

  However, in the invention of Patent Document 1, the latching part is latched to the ground-side flange part of the H-section steel as described in the fifth column to the eleventh line of the upper right column of the third page of the same document 1. In such a case, there is a fatal problem that it is difficult to fasten the bolt and the nut securely because the width of the flange is wide and a gap is generated. Certainly, this problem can be solved by driving wedges into the gap, but this work must be done in an unreasonable posture as in the case of the bolt joint work on the top of the natural mountain side flange. In addition to the need for skilled skills, there is an added burden of adding a wedge work.

Since the invention of Patent Document 2 is implemented in a special shape in which a commercially available reinforcing ring piece is provided with a protruding portion, there is a problem that processing costs and material costs increase. When attaching the overhanging portion to the reinforcing ring piece by welding, it is essential to weld so that the contact surface between the reinforcing ring piece and the overhanging portion is completely melted, which is laborious and time consuming and uneconomical. Moreover, since it is bulky because of its special shape, there is also a problem that the cost required for transportation and storage increases as compared with a commercially available reinforcing ring. In addition, because the joint plate is higher than the reinforcing ring piece, the number of excavations (raccoon digging) that go around the ground for bolt joints increases, which may impair the stability of the ground. .
In the invention of Patent Document 2, as shown in FIGS. 5 and 6 of the same Document 2, an embodiment in which welding is unnecessary by using a steel plate (18) having an overhang portion is also disclosed. . However, problems that impair the stability of natural grounds are still not solved. Moreover, with the use of the steel plate (18), it is necessary to use the gap adjusting plate (17) between the joint plate (7) and the reinforcing ring piece (2), which causes a problem that the material cost is further increased.

  The object of the present invention is to provide a joint plate provided on the ground-side flange of the reinforcing ring piece with a reasonable shape and structure for the work of bolting by putting the hand into the ground-side, thereby making it the place where workers are most difficult. For the upper part of the mountain side flange, it is possible to quickly and reliably join the ends of the reinforcing ring pieces facing each other without using bolting work, and for the liner plate with excellent workability and economy. It is an object to provide a joint structure and joint method of a reinforcing ring, and a joint plate.

As a means for solving the above-described background art, the joint structure of the reinforcement ring for liner plate according to the invention described in claim 1 is provided in a vertical direction with respect to the wall of the shaft constructed by connecting the liner plate. It is a joint structure of a reinforcement ring for a liner plate to be attached to
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Composed by joining through,
The joint plate provided on the ground ring side flange of the reinforcing ring piece is provided with an upper side joint piece at the upper part of the ground ring side flange at the end part of the reinforcing ring piece facing each other and straddling both ends of the reinforcing ring piece at the lower part. One lower side joint piece is provided, and the upper side joint piece is fitted into a recess provided in the lower side joint piece, so that the stress can be transmitted so as to be contacted,
The lower joint piece is brought into contact with the upper joint piece fixed to the upper part of the natural ground flange at the end of the reinforcing ring piece facing each other so as to transmit stress,
The natural mountain side flange at the end of the reinforcing ring piece facing each other is provided with a bolt hole on at least the lower side of both sides, and the lower joint piece is provided with a bolt hole at a position corresponding to the bolt hole, A nut is fastened to the bolt inserted in the matched bolt hole, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other.

  The invention described in claim 2 is the joint structure of the reinforcing ring for liner plate described in claim 1, wherein the stress is a shear stress.

  The invention described in claim 3 is the joint structure of the reinforcement ring for liner plate according to claim 1 or 2, wherein the upper side joint piece is formed in a shape in which a concave portion and a convex portion are provided at a lower end portion, The lower joint piece is provided with a convex portion and a concave portion that fit into the concave portion and the convex portion at the upper end portion, and is configured to be formed into a substantially rectangular joint plate in a state in which both are combined. Features.

  According to a fourth aspect of the present invention, in the joint structure for a liner plate reinforcing ring according to the first or second aspect, the upper side joint piece is formed in a pair of substantially rectangular shapes, and the lower side joint piece is The upper end portion is formed in a concave portion inscribed in the other end portion and the lower end portion of the upper side joint piece with the one end portions facing each other, and is formed into a substantially rectangular joint plate in a state where both are combined. It is characterized by being.

  According to a fifth aspect of the present invention, in the joint structure for a liner plate reinforcing ring according to any one of the first to fourth aspects, the upper side joint piece is an upper part of the ground-side flange at the end of the reinforcing ring piece. It is fixed by bolting, screwing, or welding.

  The joint plate according to the invention described in claim 6 is a joint plate provided on the natural ground side flange of the liner reinforcement ring piece, and an upper side joint piece is provided on the upper part of the natural ground side flange at the end of the reinforcing ring piece facing each other. One lower joint piece is provided at the lower part across both ends of the reinforcing ring piece, and the upper joint piece fits into the recess provided in the lower joint piece so that stress can be transmitted. It is characterized by being configured to contact.

The joint method of the reinforcement ring for liner plates according to the invention described in claim 7 is a joint method of the reinforcement ring for liner plates attached up and down with respect to the wall of the shaft constructed by connecting the liner plates. ,
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Configured by joining via
The joint plate provided on the ground-side flange of the reinforcing ring piece is provided with an upper-side joint piece at the upper part of the ground-side flange at the end part of the reinforcing ring piece facing each other, and 1 at the lower part straddling both ends of the reinforcing ring piece. Two lower side joint pieces are provided, and the upper side joint piece fits into a recess provided in the lower side joint piece, so that the stress can be transmitted and contacted,
After facing the ends of the reinforcing ring pieces that fixed the upper side joint piece to the top of the natural ground side flange, the lower side joint piece is brought into contact with two adjacent upper side joint pieces so that stress can be transmitted,
The ground-side flanges at the ends of the reinforcing ring pieces facing each other have bolt holes on at least the lower side of the both sides, and the lower joint pieces have bolt holes at positions corresponding to the bolt holes, and coincide with each other. A bolt is inserted into the bolt hole and fastened with a nut, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other.

The liner plate reinforcing ring joint structure, joint method, and joint plate according to the present invention have the following effects.
1) The joint plate provided on the natural ground side flange is formed in a reasonable three-part shape for the work of bolting by putting the hand in the natural ground side. Can be carried out by fixing the upper-side joint piece that constitutes to the ground-side flange of the reinforcing ring piece in advance, so that the bolt joining work by groping can be omitted. Therefore, the end portions of the reinforcing ring pieces facing each other can be joined quickly and reliably, so that the workability is excellent.
2) Since the bolt joining work on the upper part of the natural ground side flange has been performed in advance, it is not necessary to perform the bolt joining work when attaching the upper joint piece to the liner plate. The amount of such excavation (raccoon digging) can be reduced. Therefore, there is no possibility of damaging the stability of natural ground as compared with the prior art.
3) The amount of steel used (material cost) can be as much as that of the conventional technique using two rectangular joint plates, which is very economical. Moreover, since it can implement using the reinforcement ring piece used by a prior art, it can use together the reinforcement ring piece of a prior art, and it is very economical.

It is the disassembled perspective view which showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. A and B are the front views which showed the shape of the upper side coupling piece and the lower side coupling piece which comprise the coupling board which concerns on this invention. A is the side view which showed the step which contact | abuts the lower side joint piece to the upper side joint piece fixed to the natural ground side flange which faced each other, and B is the same front view. A is a side view showing a stage in which a lower joint piece is brought into contact with and bolted to an upper joint piece fixed to a natural ground flange facing each other, and B is a front view thereof. It is the side view which showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. It is the perspective view which abbreviate | omitted the liner plate and showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. It is the top view which abbreviate | omitted the liner plate and showed the joint structure of the reinforcement ring for liner plates which concerns on this invention. A is the front view which showed an example of the dimension of the upper side coupling piece and the lower side coupling piece which comprise the coupling board which concerns on this invention, B is the same side view. A to D are front views showing variations of the joint plate according to the present invention.

FIGS. 1-9 has shown the Example of the joint structure of the reinforcement ring for liner plates which concerns on this invention.
The liner plate reinforcing ring joint structure is a joint structure of liner plate reinforcing rings that are attached to the vertical wall of the shaft wall constructed by connecting the liner plate 10. The liner plate reinforcing ring includes: A plurality of reinforcing ring pieces 1 made of H-shaped steel are arranged with their flanges on the ground 8 side and the underground 9 side, and the ends of the reinforcing ring pieces 1 and 1 face each other in the circumferential direction (see FIG. 1). ) And the joint plates 2 and 20.
The joint plate 2 provided on the ground-side flange 11 of the reinforcing ring piece 1 is provided with upper-side joint pieces 3 and 3 at the upper part of the ground-side flange 11 at the ends of the reinforcing ring pieces 1 and 1 facing each other, and at the lower part. One lower joint piece 4 is provided across both ends of the reinforcing ring piece 1, and the upper joint pieces 3 and 3 are fitted into the recesses of the lower joint piece 4 so that stress can be transmitted. A lower joint piece 4 is formed on the upper joint pieces 3 and 3 fixed to the upper portions of the ground flanges 11 and 11 at the ends of the reinforcing ring pieces 1 and 1 facing each other. It is contacted so that stress can be transmitted.
Bolts 11a and 11 at the ends of the reinforcing ring pieces 1 and 1 facing each other are provided with bolt holes 11a on at least the lower side of both, and the lower joint piece 4 coincides with the bolt hole 11a. The bolt hole 4a is provided at a position where the nut 6 is fastened to the bolt 5 inserted into the matched bolt hole 11a, 4a, and the lower joint piece 4 is at the end of the reinforcing ring pieces 1, 1 facing each other. It is fixed straddling both natural ground side flanges 11 and 11 (refer FIG. 6 etc.).

The reinforcing ring pieces 1 are formed by arcuating H-shaped steels having flanges arranged on the ground 8 side and the mine 9 side, and are arranged in a plurality along the circumferential flange 10a at the lower end of the liner plate 10 (usually 4 More than one) are face-to-face joined to complete the reinforcing ring.
By the way, the cross-sectional dimension of the H-shaped steel of the reinforcing ring piece 1 according to the illustrated example is 125 (height) × 125 (width) × 6.5 (web thickness) × 9 (flange thickness) (unit: mm) is doing.
Although part of the reinforcing ring is omitted for the sake of illustration, the four reinforcing ring pieces 1 having a circular arc shape are used, and the ends of the adjacent reinforcing ring pieces 1 and 1 face each other and are formed in a ring shape. And implement. The number, shape, and cross-sectional dimensions of the reinforcing ring pieces 1 constituting the reinforcing ring are not limited to the illustrated examples, and the scale and shape of the reinforcing ring and consequently the liner plate 10 to be constructed (circular, oval, rectangular). The design will be changed accordingly.
Incidentally, in the illustrated example, the reinforcing ring pieces 1 and 1 are abutted and joined to each other so that the end portions of the reinforcing ring pieces 1 and 1 are in contact with each other, but the present invention is not limited to this. They can also be joined together.

As shown in FIG. 6 and the like, the joint plates 2 and 20 are respectively connected to the ground-side flanges 11 and 11 and the downside flanges 12 and 12 at the ends of the reinforcing ring pieces 1 and 1 facing each other. It is arranged across.
Of the joint plates 2 and 20, a joint plate similar to the conventional one is used as the joint plate 20 provided on the downhole flange 12 of the reinforcing ring piece 1. That is, the joint plate 20 is made of metal and is formed with a curvature (for example, a curvature radius of 1750 mm) that matches the shape of the flange of the reinforcing ring piece 1 formed in an arc, and face each other as shown in FIG. The reinforcement ring pieces 1 and 1 are implemented in a configuration in which the bolt holes 20a provided in the joint plate 20 coincide with the bolt holes 12a provided in the inner flanges 12 and 12 at the end portions of the reinforcing ring pieces 1 and 1, respectively. Incidentally, the dimensions of the joint plate 20 according to the present embodiment are 125 (height) × 12 (thickness) × width 330 (width) (unit: mm).

On the other hand, the joint plate 2 disposed on the natural ground side flange 11 has two upper sides as shown in FIG. 2 in order to efficiently and reliably perform the bolt joining operation on the natural ground 8 side, which is difficult to be visually confirmed by an operator. The joint pieces 3 and 3 and the lower side joint piece 4 are implemented by a structure in which stress (shear stress) can be transmitted. It becomes possible to perform bolting work on the ground 8 side in a state where the two upper joint pieces 3 and 3 are fixed in advance to the ground flanges 11 and 11 of the reinforcing rings 1 and 1 respectively. This is to eliminate the bolt-joining work by groping about the upper part of the natural mountain side flange 11.
The two upper joint pieces 3 and 3 and the lower joint piece 4 are made of metal, and the joint plate 2 formed by combining them is formed with a curvature that matches the shape of the flange of the reinforcing ring piece 1 formed in an arc shape. is doing. The lower joint piece 4 is provided with bolt holes 4a at positions corresponding to a plurality (four in the illustrated example) of bolt holes 11a provided on the lower side of the natural ground flanges 11 and 11.
Incidentally, the dimensions of the joint plate 2 according to the present embodiment are 125 (height) × 16 (thickness) × width 330 (width) (unit: mm), compared with the joint plate 20. The thickness is increased to increase the rigidity.

The upper joint piece 3 according to the present embodiment is provided with a bolt hole 3a at a position that coincides with the bolt hole 11b provided on the top of the natural mountain side flange 11, and the bolt 5 inserted into the matched bolt holes 11b and 3a. It is fixed to the natural ground flange 11 by means of fastening the nut 6. Since the fixing work can be performed in advance at the stage before attaching the reinforcing ring piece 1 to the liner plate 10 such as on the inside of the mine or on the ground before being carried into the mine, no particular restriction is imposed on the work place. Therefore, the present invention is not limited to bolt joining, and can be implemented by fixing means such as screwing or welding.
However, when the reinforcing ring piece 1 used in the prior art is joined, if the bolt joining at the upper part of the reinforcing ring piece 1 is simply omitted and only the lower part is joined, the number of bolts 5 is halved. The sum total of the shear stress of the bolt 5 required for the reliable connection between the two is insufficient. Therefore, the upper joint plate 3, 3 and the lower joint plate 4 are shaped so as to be able to transmit the shearing stress by also bolting the upper portion of the reinforcing ring piece 1. By doing in this way, the reliable connection of the reinforcement ring pieces 1 and 1 is implemented by the shear stress of the bolt 5 of both the upper part and the lower part of the reinforcement ring piece 1. Therefore, when joining the reinforcement ring piece 1 used by a prior art, it is preferable to fix the upper side coupling board 3 to the natural ground side flange 11 of the reinforcement ring piece 1 by bolt joining.
The joint plates 15, 25, 35, and 45 whose variations are illustrated in FIGS.

  Incidentally, as shown in FIG. 3 and the like, the bolt 5 according to the present embodiment is implemented by inserting the head thereof toward the liner plate 10 side into the bolt holes 11b and 3a. This is because when the tip of the bolt 5 is directed toward the liner plate 10, the tip of the bolt 5 contacts the liner plate 10 depending on the length of the bolt 5 to be used and the form of the liner plate 10 and the reinforcing ring piece 1. Therefore, it is possible to reliably prevent the bolts 5 and the nuts 6 from being fastened together. Therefore, when there is no possibility that the tip of the bolt 5 comes into contact with the liner plate 10 due to the structural design, it is of course possible to insert the tip of the bolt 5 toward the liner plate 10.

The upper side joint pieces 3 and 3 and the lower side joint piece 4 constituting the joint plate 2 according to the present embodiment are implemented with the dimensions (sizes) and shapes shown in FIG. 8 as an example, but are not limited thereto. However, the variations illustrated in FIGS.
In short, the joint plate 2 has a structure in which the reinforcing ring is formed, and the structural properties of the joint plate 2, so that the upper part of the ground-side flange 11 at the ends of the joined reinforcing ring pieces 1 and 1 is grounded. When a force to open the mountain 8 is applied, the upper joint pieces 3, 3 and the shearing stress transmitted from the upper joint pieces 3, 3 fixed to the upper part to the lower joint piece 4 are applied. It can be implemented in various variations on the condition that the lower joint piece 4 has a structural design with sufficient rigidity to resist each other.

  Incidentally, in the joint plate 2 shown in the embodiment according to FIGS. 1 to 8, the two upper joint pieces 3 and 3 are formed in a pair of left and right symmetrical shapes in which a recess is provided at the lower end, The lower joint piece 4 is implemented by a configuration in which a convex portion that fits into the concave portion is provided at the upper end portion, and the joint plate 2 is formed in a substantially rectangular shape in a state where both are combined. Specifically, each of the pair of upper side joint pieces 3 and 3 facing each other at one end is provided with one triangular recess at the center of its lower end, and a stepped recess ( One notch) is provided. The lower joint piece 4 to be brought into contact with the upper joint pieces 3 and 3 is provided with two triangular convex portions at positions where the upper joint portions fit into the triangular concave portions, Two protrusions that fit into the stepped recesses (notches) are provided at both ends.

  Thus, in the joint structure of the liner plate reinforcing ring, the reinforcing ring pieces 1 and 1 to which the upper joint pieces 3 and 3 are respectively fixed are positioned at the connection end of the liner plate 10 with their ends facing each other. The lower joint plate 4 can transmit shear stress to the lower ends of the upper joint plates 3 and 3 of the ground ring flanges 11 and 11 of the reinforcing ring pieces 1 and 1 so as to straddle the ground mountain flanges 11 and 11. The joint plate 20 is abutted and joined by the bolt 5 and the nut 6 so as to straddle the inner flanges 12 and 12 while being abutted and joined by the bolt 5 and the nut 6 (FIGS. 5 to 7). reference).

In the illustrated example, each bolt 5 has its head directed toward the liner plate 10 side. However, as described in the paragraph [0025] above, the tip of the bolt 5 is the liner plate for structural design. If there is no risk of contact with the bolt 10, the tip of the bolt 5 may be inserted toward the liner plate 10 side.
Also, the shape of the joint plate 2 (upper side joint pieces 3, 3 and lower side joint piece 4), 20 and the number and arrangement of bolt holes 3a, 4a, 20a provided in the joint plates 2, 20 are of course. The design is not limited to the illustrated example, and the design is appropriately changed according to the shape of the reinforcing ring piece 1 to be used, the number of bolt holes 11a and 12a provided in the reinforcing ring piece 1 and the arrangement thereof. The shape of the bolt holes 3a, 4a, and 20a is not limited to a round hole, and it is of course possible to use a long hole so that the bolt 5 can be inserted easily. The joint plates 15, 25, 35, and 45 whose variations are illustrated in FIGS.

Next, the joint method of the reinforcement ring for liner plates is demonstrated.
In this joint method, first, the upper side joint piece 3 is fixed to the joint end portion of the reinforcing ring piece 1 in advance before positioning the reinforcing ring piece 1 at the connection end of the liner plate 10. The upper side joint piece 3 is fixed to the upper part of the natural mountain side flange 11 at the joining end of the reinforcing ring piece 1 with the fixing means (bolt joint in the illustrated example) with the corners of each other being matched. This operation is performed on the ground or in the mine of the liner plate 10.

  Next, the reinforcing ring piece 1 with the upper joint piece 3 fixed is placed on the existing liner plate 10 so that the reinforcing ring pieces 1 and 1 face each other along the circumferential flange 10a at the lower end of the liner plate 10. Attach (match). Specifically, as shown in FIG. 1 and FIG. 3A, each reinforcing ring piece 1 has a ground-side flange 11 provided with an upper-side joint piece 3 disposed on the ground 8 side, and a well-side flange 12 is located in a well 9. The bolt holes 1a provided in the web of each reinforcing ring piece 1 are aligned with the bolt holes 10b provided in the circumferential flange 10a of the liner plate 10, and the bolts 16 are moved downward in the matched bolt holes 1a and 10b. And tightened with a nut 17 so that the reinforcing ring pieces 1 and 1 face each other. Then, the ends of the upper joint pieces 3 and 3 fixed to the reinforcing ring pieces 1 and 1 are adjacent to each other as shown in FIG. 3B.

  After the reinforcing ring pieces 1 and 1 are installed on the existing liner plate 10 so as to face each other, as shown in FIGS. 3A and 3B, the lower side joint pieces are disposed at the lower ends of the upper side joint pieces 3 and 3 which are adjacent to each other and face each other. 4 is brought into contact with (combined with) the lower side of the natural ground 8 so that shear stress can be transmitted, and the bolt hole 11 a provided on the lower side of the natural ground side flange 11 of the reinforcing ring piece 1 and the lower side joint piece 4 The bolt holes 4a provided are positioned concentrically, and as shown in FIG. 4, four bolts 5 are respectively inserted into the bolt holes 11a and 4a from the downhole 9 side to the ground 8 side. The nut 6 is screwed and fastened to constitute the joint plate 2. Since it is sufficient to perform the bolt joining work for this portion only at the lower stage portion of the natural mountain side flange 11, the operator can surely perform a smooth and good joining work.

On the other hand, the joint plate 20 is provided so as to evenly straddle the opposing well inner flanges 12, 12, and the bolt holes 12 a provided in the well inner flange 12 and the bolt holes 20 a provided in the joint plate 20 are arranged concentrically. 5 to 7, 8 bolts 5 are inserted into the bolt holes 11a and 4a from the ground 8 side to the underground 9 side, and the nut 6 is screwed and fastened. Since the bolt joining work of this part can be performed while visually confirming by an operator, the worker can surely perform a smooth and good joining work. The joint work of the joint plate 20 may be performed prior to the joint work of the joint plate 2 (lower side joint piece 4).
Incidentally, reference numeral 7 in the drawing indicates a washer.

  Thus, the reinforcing ring pieces 1, 1 facing each other are bolted so as to straddle the joint plates 2, 20 to the ground-side flanges 11, 11 and the inner flanges 12, 12 of the reinforcing ring pieces 1, 1 facing each other. A reinforcing ring is completed by repeating the operation | work which joins together as many as needed along the circumferential direction flange of the said liner plate 10. FIG. After completing the reinforcing ring, a part of the plurality of bolts 16 attached to the bolt holes 1a of the reinforcing ring piece 1 is once removed, and a liner plate (not shown) is disposed on the lower side, and then the bolts 16 are attached. Reinstall.

  According to the joint structure and the joint method of the liner plate reinforcing ring and the joint plate 2 described above, the upper joint piece 3 constituting the joint plate 2 is reinforced in advance with respect to the upper part of the natural mountain side flange 11 where the worker is most difficult. Since it can fix and implement to the natural ground side flange 11 of the ring piece 1, the bolt joint operation by groping can be abbreviate | omitted. Therefore, the ends of the reinforcing ring pieces 1 and 1 facing each other can be joined quickly and reliably, and the amount of excavation (raccoon digging) that goes around the natural ground 8 for bolt joining is reduced. be able to.

  Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.

For example, the shapes of the upper side joint pieces 3 and 3 and the lower side joint piece 4 constituting the joint plate 2 are not limited to those shown in FIGS. 1 to 8, and various variations illustrated in FIGS. be able to.
In FIG. 9A, the two upper joint pieces 13, 13 are formed in a pair of left and right symmetrical shapes in which a triangular concave portion (or convex portion) is continuous at the lower end portion, and the lower joint piece 14 is formed at the upper end portion. An example of the joint plate 15 is shown in which a triangular convex portion (or concave portion) that fits into the concave portion (or convex portion) is continuously provided and formed into a substantially rectangular shape in a state where both are combined. .
In FIG. 9B, the two upper side joint pieces 23, 23 are formed in a pair of left and right symmetrical shapes in which two square-shaped convex parts (or concave parts) are provided at the lower end part, Example of joint plate 25 in which four concave portions (or convex portions) are provided at positions where the upper end portion fits into the convex portions (or concave portions), and are formed in a substantially rectangular shape in a state where both are combined. Is shown.
In FIG. 9C, the two upper side joint pieces 33, 33 are formed in a pair of left and right symmetrical shapes in which one triangular convex part is provided at the center of the lower end part, and the lower side joint piece 34 In the embodiment, two triangular concave portions are provided at positions where the convex portions are fitted to the convex portions, and the joint plate 35 is formed in a substantially rectangular shape in a state where both are combined.
In FIG. 9D, the two upper side joint pieces 43 and 43 are formed in a pair of rectangular shapes, and the lower side joint piece 44 has two upper side joint pieces 43 whose one end faces each other. , 43 is formed in a recess inscribed in the other end portion and the lower end portion, and an example of the joint plate 45 formed in a substantially rectangular shape in a state where both are combined is shown.

The joint plates 15, 25, 35, and 45 according to FIGS. 9A to 9D are joined together due to the structural characteristics of the formed reinforcing ring and the structural characteristics of the joint plate 15 (25, 35, 45). The upper joint piece 13 (23, 33, 43) fixed to the upper part when a force is exerted to open the upper part of the natural mountain side flange 11 at the ends of the ring pieces 1, 1 toward the natural mountain 8 side. The upper side joint piece 13 (23, 33, 43) and the lower side joint piece 14 (24, 34, 44) are in contact with each other against the shear stress transmitted to the lower side joint piece 14 (24, 34, 44). By adopting a structural design having sufficient rigidity to resist, the joint plate 2 can be used similarly to the case where the ends of the reinforcing ring pieces 1 and 1 are joined to each other.
That is, the upper side joint piece 13 (23, 33, 43) constituting the joint plate 15 (25, 35, 45) is previously connected to the ground side of the reinforcing ring piece 1 for the upper part of the natural mountain side flange where the worker is most difficult. Since it can fix and implement to the flange 11, the effect similar to the effect demonstrated in the said paragraph [0035] is realizable.

DESCRIPTION OF SYMBOLS 1 Reinforcement ring piece 2 Joint plate 3 Upper side joint piece 3a Bolt hole 4 Lower side joint piece 4a Bolt hole 5 Bolt 6 Nut 7 Washer 8 Ground mountain 9 Downhole 10 Liner plate 10a Circumferential flange 10b Bolt hole 11 Ground side flange 11a Bolt Hole 11b Bolt hole 12 Bore hole 12a Bolt hole 13 Upper side joint piece 14 Lower side joint piece 15 Joint plate 16 Bolt 17 Nut 20 Joint plate 20a Bolt hole 23 Upper side joint piece 24 Lower side joint piece 25 Joint plate 33 Upper side Joint piece 34 Lower side joint piece 35 Joint plate 43 Upper side joint piece 44 Lower side joint piece 45 Joint plate

Claims (7)

It is a joint structure of a reinforcement ring for a liner plate attached up and down with respect to a wall of a shaft constructed by connecting liner plates,
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Composed by joining through,
The joint plate provided on the ground ring side flange of the reinforcing ring piece is provided with an upper side joint piece at the upper part of the ground ring side flange at the end part of the reinforcing ring piece facing each other and straddling both ends of the reinforcing ring piece at the lower part. One lower side joint piece is provided, and the upper side joint piece is fitted into a recess provided in the lower side joint piece, so that the stress can be transmitted so as to be contacted,
The lower joint piece is brought into contact with the upper joint piece fixed to the upper part of the natural ground flange at the end of the reinforcing ring piece facing each other so as to transmit stress,
The natural mountain side flange at the end of the reinforcing ring piece facing each other is provided with a bolt hole on at least the lower side of both sides, and the lower joint piece is provided with a bolt hole at a position corresponding to the bolt hole, A liner is characterized in that a nut is fastened to a bolt inserted into a matched bolt hole, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other. Joint structure of reinforcing ring for plate.   The joint structure of a reinforcement ring for a liner plate according to claim 1, wherein the stress is a shear stress.   The upper joint piece is formed in a shape in which a concave portion and a convex portion are provided at the lower end portion, and the lower joint piece is provided with a convex portion and a concave portion that fit into the concave portion and the convex portion at the upper end portion, The joint structure for a reinforcement ring for a liner plate according to claim 1 or 2, wherein the joint plate is formed into a substantially rectangular joint plate in a state in which both are combined.   The upper side joint piece is formed in a pair of substantially rectangular shapes, and the lower side joint piece has its upper end inscribed in the other end and lower end of the upper side joint piece facing one end to the other. The joint structure for a reinforcement ring for a liner plate according to claim 1 or 2, wherein the joint structure is formed in a concave portion and formed into a substantially rectangular joint plate in a state in which both are combined.   The said upper side coupling piece is being fixed to the upper part of the natural mountain side flange in the edge part of a reinforcement ring piece by the bolting, screwing, or welding, It is any one of Claims 1-4 characterized by the above-mentioned. Joint structure of reinforcing ring piece for liner plate.   The joint plate provided on the ground ring side flange of the reinforcing ring piece is provided with an upper side joint piece at the upper part of the ground ring side flange at the end part of the reinforcing ring piece facing each other and straddling both ends of the reinforcing ring piece at the lower part. One lower-side joint piece is provided, and the upper-side joint piece is fitted into a recess provided in the lower-side joint piece, so that the stress can be transmitted and the joint is formed. Board. A joint method of a reinforcing ring for a liner plate that is attached up and down with respect to a wall of a shaft constructed by connecting liner plates,
The reinforcing ring for liner plate has a plurality of reinforcing ring pieces made of H-shaped steel, the flanges are arranged on the natural ground side and the inside of the pit, the ends of the reinforcing ring pieces face each other in the circumferential direction, and the joint plate is Configured by joining via
The joint plate provided on the ground-side flange of the reinforcing ring piece is provided with an upper-side joint piece at the upper part of the ground-side flange at the end part of the reinforcing ring piece facing each other, and 1 at the lower part straddling both ends of the reinforcing ring piece. Two lower side joint pieces are provided, and the upper side joint piece fits into a recess provided in the lower side joint piece, so that the stress can be transmitted and contacted,
After facing the ends of the reinforcing ring pieces that fixed the upper side joint piece to the top of the natural ground side flange, the lower side joint piece is brought into contact with two adjacent upper side joint pieces so that stress can be transmitted,
The ground-side flanges at the ends of the reinforcing ring pieces facing each other have bolt holes on at least the lower side of the both sides, and the lower joint pieces have bolt holes at positions corresponding to the bolt holes, and coincide with each other. Reinforcement for liner plate, characterized in that a bolt is inserted into a bolt hole and fastened with a nut, and the lower joint piece is fixed across both ground-side flanges at the ends of the reinforcing ring pieces facing each other. Ring coupling method.

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