JP4488853B2 - Coupling jig and housing - Google Patents

Description

  The present invention relates to a coupling jig and a housing.

  Conventionally, when there is a restriction on the space above the place where a pile or the like is to be constructed, (1) the strand used for the steel material in the axial direction is wound around the drum, and the band is built while the strand is built in the excavation hole. A method of assembling a frame by installing a line (for example, Patent Document 1), or (2) A method of lowering a frame using a strand in an axial steel material into the excavation hole while bending it near the entrance of the excavation hole (For example, see Patent Document 2).

Japanese Patent Laid-Open No. 11-36294 JP-A-11-293668

  (3) Using a binding jig, the strands that are axis bars and the band bars are bound so that the crossing angle can be changed to form a housing, and the strands are bent into an arc shape to shorten the length. There has been proposed a method in which the skeleton in the state is placed in the excavation hole while returning the strand to a straight line.

  However, in the method (1), it is necessary to arrange installation equipment including drums in the same number as the number of strands directly above the hole, so that a large work area is required and work is frequently performed to insert joints. Inefficient. In the method (2), it is difficult to bend the assembled reinforcing bar rod within a limited empty head.

  The method of (3) solves the problems of (1) and (2), but the joining jig holds and joins the strand and the band reinforcing bar with members each having a circular cross section. there were. The dimensions and structure of the connecting jig play an extremely important role in the load bearing performance against the bending moment and shearing force of the finished pile, the ease of work in the process of manufacturing the frame, the reduction rate of the frame, etc. Improvement was desired.

  The present invention has been made in view of such a problem, and the object of the present invention is that workability in each process such as jig attachment to a strand, jig attachment to a band rebar, and assembly of a frame is performed. It is an object of the present invention to provide a coupling jig and a casing that are good, economical, and can sufficiently reduce the length of the casing.

  According to a first aspect of the present invention for achieving the above-described object, a cylindrical member that holds a strand that is an axial bar, an angle member fixed to a band provided around the strand, and an end portion of the cylindrical bar A rod member that is fixed to the outer surface of the shaped member and penetrates the angle member, and a member that is installed on the rod member to prevent the angle member from being removed from the rod member. And the cylindrical member rotates. The cylindrical member is, for example, a steel pipe. In this case, the strand is passed through the steel pipe, and an adhesive such as a resin is filled between the strand and the steel pipe.

  2nd invention is the cylindrical member holding the strand which is an axial line | wire, the angle material fixed to the strip provided around the said strand, an edge part is being fixed to the said cylindrical member, A rod member that protrudes from the cylindrical member and penetrates the angle member, and a member that is installed on the rod member to prevent the angle member from falling out of the rod member. The cylindrical member is rotated, and the cylindrical member has a first semi-cylindrical body having an outward groove formed by bending two sides in the cylinder axis direction outward, and two sides in the cylinder axis direction are set inward. A second half cylinder having an inward groove formed by bending, the strand is disposed in the first half cylinder, the outward groove and the inward groove are fitted together, and the first A coupling jig characterized in that one half-cylinder and the second half-cylinder are integrated. A.

  The bar material shall be bolts, screw studs, etc. By inserting the angle member through a bolt, a screw stud, or the like fixed to the tubular member, the tubular member can be rotated with respect to the angle member. Further, a nut is fixed to the bolt, the screw stud, etc. in order to prevent the angle member from coming off from the bolt, the screw stud, etc.

  According to a third aspect of the present invention, there is provided a cylindrical member for holding a strand which is an axial line, a band formed in a concave shape, having a hole in a bottom portion of the concave shape, and an upper end portion of the concave shape provided around the strand. A pressing member fixed to the rod, and a diameter-enlarged portion provided at one end is disposed inside the concave mold through the hole, and a rod member having the other end fixed to the cylindrical member, It is a coupling jig characterized in that the cylindrical member rotates with respect to the press material.

  The hole provided in the press material has a first hole whose diameter is larger than the diameter of the expanded portion of the bar material, and a second hole whose diameter is smaller than the diameter of the expanded portion of the bar material and larger than the diameter of the normal portion of the bar material. It is desirable that the holes are continuously arranged. The diameter-enlarged portion of the bar is passed through the first hole and disposed inside the concave mold of the press material. Then, after the bar is moved in the direction of the second hole, the first hole is closed.

  4th invention is a housing | casing characterized by the strand and the band being couple | bonded using the coupling jig of 1st, 2nd or 3rd invention. A reinforcing ring is installed inside the band as needed.

  According to the present invention, the workability in each process such as jig attachment to a strand, jig attachment to a reinforcing bar, and assembly of a housing is good, economical, and the coupling can sufficiently reduce the length of the housing. A jig and a housing can be provided.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an elevational view of the housing 1. 1A is an elevation view of the housing 1 in a normal state, and FIG. 1B is an elevation view of the housing 1 in a shortened length. As shown in FIG. 1, the housing 1 includes a strand 3 that is an axial line, a band 5 that is disposed so as to surround the plurality of strands 3, and the like.

  The strand 3 is made of a flexible material that does not cause a problem in strength or the like even if it is bent to the same degree or more as the diameter of the band 5. The strand 3 is made of, for example, a twisted PC fiber, a wire rope, or a combination of fibers such as carbon fiber, glass fiber, and aramid fiber. The band 5 is a reinforcing bar or the like.

  FIG. 2 is a perspective view of a rotary coupling jig 7 (7 a) used for coupling the strand 3 and the band reinforcing bar 5. FIG. 3 is a cross-sectional view of a joint portion between the strand 3 and the band reinforcing bar 5. 3 (a) is a cross-sectional view of an enlarged portion indicated by Ba in FIG. 1 (a), and FIG. 3 (b) is a portion indicated by Bb in FIG. 1 (b). It is sectional drawing of what was expanded.

  As shown in FIGS. 2 and 3, the rotary coupling jig 7 includes a sleeve 9, an angle member 11, a washer 13, a screw stud 15, a nut 16, a nut 17, and the like. The sleeve 9 is a cylindrical member that holds the strand 3. The strand 3 is passed through the inside of the sleeve 9, and a resin 19 or the like is filled as an adhesive between the sleeve 9 and the strand 3. The screw stud 15 is fixed to the outer surface of the sleeve 9 at a welded portion 23 at one end thereof.

  The angle member 11 includes a side 11a and a side 11b. The outer surface 12a of the side 11a of the angle member 11 is fixed to the belt reinforcing bar 5 by flare welding or the like. The band reinforcing bar 5 is usually formed into a single ring by processing one reinforcing bar into an arc shape and flaring the portion where both ends are overlapped. If this welding can be performed under appropriate management, required performance such as strength as the belt reinforcing bar 5 can be secured. Even when the angle member 11 is fixed to the rebar 5, sufficient strength can be obtained by direct welding by an appropriate method and management.

  A washer 13 is disposed around the welded portion 23 of the screw stud 15. The screw portion 21 of the screw stud 15 is inserted into the side 11 b of the angle member 11. The washer 13 makes the screw stud 15 and the angle member 11 rotate smoothly. The nut 16 and the nut 17 are fixed to the screw stud 15 by being screwed together so as to prevent the screw stud 15 from coming out of the angle member 11.

  In order to couple the strand 3 and the band reinforcing bar 5 using the rotary coupling jig 7, for example, the resin 19 is filled through the strand 3 into the sleeve 9 to which the screw stud 15 is fixed. Further, the band reinforcing bar 5 is welded to the side 11 a of the angle 11. Then, the screw stud 15 is inserted into the washer 13 and the angle member 11, and the nut 16 and the nut 17 are screwed into the screw portion 21.

  When assembling the housing 1 using the rotary coupling jig 7, if the sides 11b of the angle member 11 are arranged on a concentric circle, the strand 3 is arranged on a perfect circle. For this reason, the unevenness of the position due to the roundness error of the band reinforcing bar 5 welded to the side 11a does not cause a problem.

  In the rotary coupling jig 7, as shown by an arrow C in FIG. 2, the sleeve 9 to which the screw stud 15 is fixed rotates with respect to the angle member 11. Thereby, in the housing 1, the crossing angle of the strand 3 and the band reinforcement 5 can be changed.

  When the housing 1 is in the state shown in FIG. 1A, the intersection of the strand 3 and the reinforcing bar 5 shown in Ba is in the state shown in FIG. 3A, but in FIG. When the strand 3 is bent in the direction shown by the arrow A in the figure, as shown in FIG. 3 (b), the crossing angle between the band reinforcing bar 5 and the strand 3 changes, and the strand 3 becomes spiral and at the same time 5 is gradually reduced, and the length of the casing 1 is shortened as shown in FIG.

  The casing 1 is installed in a hole excavated in the ground while being extended as shown in FIG. 1A from the contracted state as shown in FIG. When the frame 1 is extended, the crossing angle between the band reinforcing bar 5 and the strand 3 changes, and the strand 3 becomes linear, and at the same time, the bar arrangement interval of the band 5 gradually increases.

  As described above, when the rotary coupling jig 7 according to the first embodiment is used, the attachment of the angle material 11 to the rebar 5 and the attachment of the sleeve 9 to the strand 3 can be performed in separate processes, and division of labor is possible. Because there is, production efficiency is good. Since the band reinforcing bar 5 is directly welded to the angle member 11, the number of parts is smaller and the cost is lower than that of a conventional jig. In addition, it is not necessary to make the processing accuracy of the band reinforcing bar 5 stricter than necessary, and even when there is an error with respect to the perfect circle, the highly accurate casing 1 can be easily manufactured.

  Next, a second embodiment will be described. FIG. 4 is a view of the rotary coupling jig 25 attached to the band reinforcing bar 5. 4A is a view of the rotary coupling jig 25 attached to the band rebar 5 as viewed from the vertical direction of the circular band rebar 5, and FIG. 4B is a rotation attached to the band rebar 5. The figure which looked at the coupling jig 25 from the inner side direction of the circular rebar 5 is shown.

  In the second embodiment, when the casing 1 shown in FIG. 1 is assembled, a rotary coupling jig 25 is used instead of the rotary coupling jig 7 shown in FIGS. FIG. 5 is a cross-sectional view of a connecting portion between the strand 3 and the band reinforcing bar 5. 5 (a) is a cross-sectional view of an enlarged portion indicated by Ba in FIG. 1 (a), and FIG. 5 (b) is a portion indicated by Bb in FIG. 1 (b). It is sectional drawing of what was expanded.

  As shown in FIGS. 4 and 5, the rotary coupling jig 25 includes a sleeve 9, a press material 27, a stud 31, a stopper 37 and the like. As shown in FIG. 5, the sleeve 9 is a cylindrical member that holds the strand 3. The strand 3 is passed through the inside of the sleeve 9, and a resin 19 or the like is filled as an adhesive between the sleeve 9 and the strand 3.

  As shown in FIG. 4A, the stud 31 includes a main body 35, a welded portion 33 at one end of the main body 35, and a head portion 29 that is a diameter-expanded portion provided at the other end of the main body 35. . The stud 31 is fixed to the outer surface of the sleeve 9 at a welded portion 33 at one end thereof. Further, the stopper 37 is formed by bending two sides of the plate-like material into an L shape and a U shape, respectively.

  As shown in FIG. 4A, the press material 27 is formed by providing a welded portion 30 at the upper end of the concave mold portion 28, and the welded portion 30 is fixed to the band reinforcing bar 5. Even when the press member 27 is fixed to the band rebar 5, similarly to the fixing of the angle member 11 to the band rebar 5 in the first embodiment, the band rebar is directly welded by an appropriate method and management. A sufficient strength as 5 is obtained.

  As shown in FIG. 4B, a keyhole 39 is provided in the bottom 32 of the concave portion 28 of the press material 27. The key hole 39 is formed by continuously arranging a hole 39 a having a diameter larger than the diameter of the head 29 of the stud 31 and a hole 39 b having a diameter smaller than the diameter of the head 29 of the stud 31 and larger than the diameter of the main body 35. .

  As shown in FIGS. 4 and 5, the head portion 29 of the stud 31 is disposed inside the concave portion 28 of the press material 27. The main body 35 of the stud 31 is disposed in the hole 39b. As shown in FIG. 5, during use of the rotary coupling jig 25, as shown in FIG. 4B, the hole 39 a is closed by fitting the stopper 37 into the press material 27. . The stopper 37 prevents the head 39 of the stud 31 from coming out of the key hole 39.

  In order to couple the strand 3 and the reinforcing bar 5 using the rotary coupling jig 25, for example, the stud 31 is fixed to the outer surface of the sleeve 9, and the resin 19 is filled through the strand 3 inside. Further, the press material 27 is fixed to the rebar 5. Then, the head portion 29 of the stud 31 is inserted into the hole 39a of the key hole 39 of the press material 27, and the stud 31 is moved in the direction indicated by the arrow E in FIG. 4A to arrange the main body 31 in the hole 39b. After that, as shown in FIG. 4B, the stopper 37 is fitted into the press material 27 to close the hole 39a.

  In the rotation coupling jig 25, as shown by an arrow F in FIG. 4B, the stud 31 fixed to the sleeve 9 rotates with respect to the press material 27. Thereby, in the housing 1, the crossing angle of the strand 3 and the band reinforcement 5 can be changed.

  When the housing 1 is in the state shown in FIG. 1 (a), the intersection of the strand 3 and the reinforcing bar 5 shown in Ba is in the state shown in FIG. 5 (a), but in FIG. When the strand 3 is bent in the direction indicated by the arrow A in the figure, as shown in FIG. 5 (b), the crossing angle between the band reinforcing bar 5 and the strand 3 changes, and the strand 3 becomes spiral and at the same time. 5 is gradually reduced, and the length of the casing 1 is shortened as shown in FIG.

  As described above, when the rotary coupling jig 25 of the second embodiment is used, the attachment of the press material 27 to the band reinforcing bar 5 and the attachment of the sleeve 9 to the strand 3 can be performed in separate processes, and division of labor is possible. Because there is, production efficiency is good. Further, the assembly of the housing 1 is extremely simple and can be performed in either a factory or a work yard at a construction site. Furthermore, since the height dimension of the rotary coupling jig 25 including the band reinforcing bar 5 is small, the first implementation is performed when the reduction rate of the housing 1 is determined by the band reinforcing bar 5 including the rotary coupling jig 25. The reduction rate can be improved as compared with the embodiment.

  In addition, the method of fixing the press material 27 to the band reinforcing bar 5 may not be welding. The member that closes the hole 39a in the key hole 39 is not limited to the stopper 37, and a resin rivet or the like may be attached to the hole 39a. The stud 31 having the head 29 can be replaced with an integrated nut and bolt. Further, the hole 39a and the hole 39b may be arranged in the direction perpendicular to the axis of the band reinforcing bar 5 to form the keyhole 39, and when the housing 1 is assembled, the stud 31 may be slid in the direction perpendicular to the axis to close the hole 39a. However, as shown in FIGS. 4 and 5, it is preferable to slide the stud 31 in the axial direction of the band reinforcing bar 5 by utilizing the flexibility of the strand 3.

  Next, a third embodiment will be described. FIG. 6 is a view showing each component of the rotary coupling jig 7 b used for coupling the band reinforcing bar 5 a and the strand 3. FIG. 7 is a view showing a cross-sectional view of a joint portion between the strand 3 and the band reinforcing bar 5. 7A is a cross-sectional view of an enlarged portion indicated by Bc in FIG. 1A, and FIG. 7B is a portion indicated by Bd in FIG. 1B. It is sectional drawing of what was expanded.

  In the third embodiment, when the casing 1 shown in FIG. 1 is assembled, the reinforcing ring 45 is installed inside the strand 3 at the position of the upper and lower band reinforcing bars 5. As shown in FIG. 6, a rotary coupling jig 7 b is installed at the intersection of the upper and lower ends of the rebar 5 a and the strand 3.

  As shown in FIG. 6, the rotation coupling jig 7 b further includes a screw stud 41, a washer 43, a reinforcing ring 45, a nut 46, a nut 47 and the like in addition to the components of the rotation coupling jig 7 a (FIG. 2). Configured.

  As shown in FIG. 7, the screw stud 41 of the rotary coupling jig 7 b is fixed to the outer surface of the sleeve 9 at the weld portion 42. The screw stud 41 is arranged so that the screw stud 15 and the rotation axis coincide.

  A washer 43 is disposed around the welded portion 42 of the screw stud 41. The screw portion 44 of the screw stud 41 is inserted into the reinforcing ring 45. The washer 43 facilitates the rotation of the screw stud 41 and the reinforcing ring 45. The nut 47 and the nut 46 are fixed to the screw stud 41 by being screwed together so that the screw stud 41 is prevented from coming out of the reinforcing ring 45.

  As shown in FIG. 6, the reinforcing ring 45 includes a plurality of arc-shaped flat plates 48, flat plate-shaped connecting members 49, headed bolts 51, and nuts 53. The reinforcing ring 45 is sandwiched between the connecting members 49 in a state where the end portions of the flat plate 48 are abutted. The flat plate 48 and the connecting member 49 are integrated by a bolt 51 and a nut 53.

  In order to couple the strand 3 and the rebar 5a using the rotary coupling jig 7b, for example, in a state where the screw stud 15 and the screw stud 41 are fixed to the sleeve 9, the resin 19 is passed through the strand 3 inside the sleeve 9. Fill. Further, the band reinforcing bar 5 a is welded to the side 11 a of the angle 11.

  Thereafter, the angle member 11 welded with the washer 13 and the band rebar 5 a is inserted into the screw stud 15, and the nut 16 and the nut 17 are screwed into the screw portion 21. Before and after, the washer 43 and the flat plate 48 are inserted into the screw stud 41, and the nut 47 and the nut 46 are screwed into the screw portion 44. Further, a connecting member 49 is arranged at the end of the flat plate 48, a headed bolt 51 is inserted into the flat plate 48 and the connecting member 49, a nut 53 is screwed into the headed bolt 51, and a plurality of flat plates 48 are integrated to form a circular shape. The reinforcing ring 45 is used.

  In the rotary coupling jig 7 b shown in FIG. 7, the sleeve 9 to which the screw stud 15 is fixed rotates with respect to the angle member 11. Further, the sleeve 9 to which the screw stud 41 is fixed rotates with respect to the reinforcing ring 45. Thereby, in the housing 1, the crossing angle of the strand 3 and the band reinforcement 5 can be changed.

  When the housing 1 is in the state shown in FIG. 1 (a), the intersection of the strand 3 and the band reinforcing bar 5a shown in Bc is in the state shown in FIG. 7 (a), but FIG. When the strand 3 is bent in the direction shown by the arrow A in the figure, as shown in FIG. 7 (b), the crossing angle between the band reinforcing bar 5a and the strand 3 changes, and the strand 3 becomes spiral at the same time. 5 is gradually reduced, and the length of the casing 1 is shortened as shown in FIG.

  The strand 3 of the housing 1 that is in the process of being reduced is bent and twisted, and this is constrained by the rotary coupling jig 7 installed at the intersection of the band reinforcing bar 5 and the strand 3. . The load acting on the rotary coupling jig 7 varies depending on the position of the casing 1, and is greatest at the end position of the casing 1, that is, the rotational coupling jig 7 b at the position of the uppermost lower bar rebar 5 a. In the rotary coupling jig 7b, the reinforcement ring 45 can be used to allow a sufficient margin in strength.

  Thus, according to the third embodiment, the rotary coupling jig 7b in which the reinforcing ring 45 and the like are added to the rotary coupling jig 7a of the first embodiment is used at the upper and lower ends of the housing 1. . Thereby, the rotation coupling jig 7b can sufficiently withstand the load acting on the crossing portion of the band reinforcing bar 5a and the strand 3. The added reinforcing ring 45 or the like is unnecessary when the housing 1 is fully extended, and can be collected and reused as necessary.

  The reinforcing ring is not limited to one in which a plurality of flat plates 48 are integrated into a circle as shown in FIG. The reinforcing ring may be, for example, an assembly ring reinforcing bar similar to the band reinforcing bar 5. The installation position of the reinforcing ring is not limited to the upper and lower ends of the housing 1. In the third embodiment, the rotary coupling jig 7b in which the rotary coupling jig 7a and the reinforcing ring 45 are combined has been described. For example, when the belt reinforcing bar 5 having high strength and poor weldability is used, the strand 3 The reinforcing ring 45 may be installed on the sleeve 9 fixed to the strand 3 without providing anything at the intersection of the steel bar 5 and the reinforcing bar 45 by connecting the intersection with a string.

  Next, a fourth embodiment will be described. FIG. 8 is a diagram showing each process of installing the half-method jig 57 a and the half-method jig 57 b of the rotary coupling jig 55 on the strand 3. 8A is a perspective view of the half split method jig 57a and the half split method jig 57b before being installed on the strand 3, and FIG. 8B is a half split method jig 57a and a half split method jig 57a. It is a perspective view of the state which installed the split method jig | tool 57b in the strand 3. FIG.

  FIG. 9 is a cross-sectional view of a joint portion between the strand 3 and the band reinforcing bar 5. 9 (a) is a cross-sectional view of an enlarged portion indicated by Ba in FIG. 1 (a), and FIG. 9 (b) is a portion indicated by Bb in FIG. 1 (b). It is sectional drawing of what was expanded.

  As shown in FIG. 9, the rotary coupling jig 55 includes a half-type jig 57a, a half-type jig 57b, an angle member 11, a washer 13, a screw stud 15, a nut 16, a nut 17, and the like. The rotary coupling jig 55 is a rotary coupling jig 7 shown in FIGS. 2 and 3 using a cylindrical body made up of a half-type jig 57a and a half-type jig 57b instead of the sleeve 9. .

  As shown in FIG. 8 (a), the main body 61a of the half method jig 57a and the main body 61b of the half method jig 57b are both half-cylinders having a U-shaped cross section. Two sides in the direction are the hypotenuse. The main body 61a of the half split jig 57a has an outward groove 59a formed by bending two sides in the cylinder axis direction outward. The main body 61b of the halved jig 57b has an inward groove 59b formed by bending two sides in the cylinder axis direction inward.

  As shown in FIG. 8 (b), the strand 3 is sandwiched between the half method jig 57a and the half method jig 57b. A screw stud 15 is fixed to the outer surface of the half-type jig 57a at a welded portion 23 at one end thereof.

  In order to couple the strand 3 and the band reinforcing bar 5 using the rotary coupling jig 55, for example, as shown in FIG. 8 (a), the strand 3 is arranged in the main body 61a of the half split jig 57a. After that, the inward groove 59b of the half method jig 57b is disposed on the extension of the outward groove 59a of the half method jig 57a. Then, while fitting the outward groove 59a and the inward groove 59b, the halving jig 57b is moved in the direction indicated by the arrow G in FIG. 8A, and FIG. As shown, the half method jig 57a and the half method jig 57b are integrated into a cylindrical shape.

  A resin or the like is filled between the half method jig 57a and the half method jig 57b and the strand 3 as necessary. Further, at an appropriate time, as shown in FIG. 9, the screw stud 15 is inserted into the angle member 11 to which the washer 13 and the band rebar 5 are welded, and the nut 16 and the nut 17 are screwed into the screw portion 21.

  In the rotary coupling jig 55, the half method jig 57a and the half method jig 57b to which the screw stud 15 is fixed rotate with respect to the angle member 11 to which the band reinforcing bar 5 is fixed. Thereby, in the housing 1, the crossing angle of the strand 3 and the band reinforcement 5 can be changed.

  When the housing 1 is in the state shown in FIG. 1 (a), the intersection of the strand 3 and the reinforcing bar 5 shown in Ba is in the state shown in FIG. 9 (a), but in FIG. 1 (a). When the strand 3 is bent in the direction indicated by the arrow A in the figure, as shown in FIG. 9B, the crossing angle between the band reinforcing bar 5 and the strand 3 changes, and at the same time the strand 3 becomes spiral, the band 5 is gradually reduced, and the length of the casing 1 is shortened as shown in FIG.

  As described above, in the fourth embodiment, the half-cylinder method jig 57 a and the half method jig 57 b are integrated with the strand 3 interposed therebetween. When the cylindrical sleeve 9 (FIG. 2) as shown in the first embodiment is used, the necessary number of the sleeves 9 is added to the strand 3 before the crimping sleeve or the like is processed at the end of the strand 3 in the production line. However, the halving method jig 57a and the halving method jig 57b can be attached at any time. The half method jig 57a and the half method jig 57b can be attached to the strand 3 after a crimping sleeve or the like is processed at the end of the strand 3 in a normal production line.

  In addition, the ends of the strands 3 are usually bundled with a band or the like so that the strands cannot be unwound and have a large diameter. Therefore, in the method of inserting the strand 3 through the sleeve 9, it is necessary to make the inner diameter of the sleeve 9 large enough to insert the end of the strand 3. However, the size of the main body 61a and the main body 61b can be set according to the circumscribed diameter of the strand 3 by using the half method jig 57a and the half method jig 57b.

  Since the size of the main body 61a and the main body 61b is set according to the circumscribed diameter of the strand 3 in the rotary coupling jig 55, the amount of resin used for fixing to the strand 3 is compared with the case where the sleeve 9 is used. , Can be significantly reduced. Moreover, since the distance between the center of the strand 3 and the angle member 11 fixed to the band reinforcing bar 5 becomes small, the distance (steel material interval) between the strand 3 which is an axial steel material and the band reinforcing bar 5 can be reduced. When the steel material interval is small, when determining the arrangement position of the band reinforcing bar 5, the rotary coupling jig 55, and the strand 3, the arrangement diameter of the strand 3 is secured at the same time as ensuring the sufficient covering of the concrete with respect to the band reinforcing bar 5 which is the outermost edge steel material. Since the effective height for bending can be increased, the cross-sectional performance is improved.

  In the rotary coupling jig 55, the cross-sectional shapes of the half method jig 57a and the half method jig 57b are U-shaped. However, the half method jig 57 is integrated into a cylindrical shape. Any shape can be used.

  The rotary coupling jigs described in the first to fourth embodiments can be used in combination. For example, for the portion where the reduction rate of the frame 1 is not determined by the height dimension of the band reinforcing bar 5 (in the vicinity of the lower end of the pile, the range in which the band reinforcing bars 5 are usually arranged at intervals of 200 to 300 mm), The portion where the reduction rate is determined by the height dimension of the member that fixes the band reinforcing bar 5 (the range in which the band reinforcing bars 5 are usually arranged at intervals of 125 to 150 mm near the pile head) About the pile head nearest to which the rebar 5 is arranged most densely (in the range of about twice the pile diameter from the pile head) using the rotary coupling jig 25 of the second embodiment, It is conceivable that the jig is not used or is bound with a string-like one, and the rotary coupling jig 7b of the third embodiment is used for the uppermost band rebar 5. The fourth embodiment instead of the sleeve 9 of the rotary coupling jig 7a of the first embodiment, the rotary coupling jig 25 of the second embodiment, and the rotary coupling jig 7b of the third embodiment. A halved jig as described above may be used.

  As described above, by properly using the rotary coupling jig according to the position of the rebar 5, it has sufficient strength against the load acting on the jig when the strand 3 is contracted / extended, 1 is easy to manufacture and can provide a low-cost housing 1.

  In the housing 1, it is not necessary to install a rotary coupling jig as described in the first to fourth embodiments at all the intersections of the strand 3 and the band reinforcing bar 5. For example, the intersection at the middle stage may be bound with a string, or no jig may be provided at the intersection.

  When a jig is not provided at the intersection of the strand 3 and the band rebar 5, the band rebar 5 and the strand 3 can be bound by a normal binding dotted line or the like while performing the work of extending the frame 1. In this case, it is necessary to assemble the housing 1 while it is built, but there is an advantage that the number of jigs in the whole housing can be reduced and the cost of the jig is reduced.

  As described in the first embodiment, the casing 1 is installed in the excavation hole while being extended. However, in the case where no jig is provided at the intersection of the strand 3 and the strip reinforcing bar 5, The reinforcing bars 5 may be attached to the string at a predetermined interval and made into a comb shape. After the strand 3 is extended, the interstrand is stretched by its own weight and arranged at a predetermined interval, and the strand 3 and the band reinforcing bar 5 may be bound. .

  The preferred embodiments of the coupling jig and the housing according to the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

Elevated view of enclosure 1 The perspective view of the rotation coupling jig 7 (7a) used for the coupling | bonding of the strand 3 and the band reinforcement 5 Sectional drawing of the joint part of the strand 3 and the band reinforcement 5 The figure of the rotation coupling jig 25 attached to the belt reinforcement 5 Sectional drawing of the joint part of the strand 3 and the band reinforcement 5 The figure which shows each component of the rotation coupling jig 7b used for the coupling | bonding of the band reinforcement 5a and the strand 3 Sectional drawing of the joint part of the strand 3 and the band reinforcement 5 The figure which shows each process of installing the half method jig | tool 57a and the half method jig 57b of the rotation coupling jig 55 in the strand 3. FIG. Sectional drawing of the joint part of the strand 3 and the band reinforcement 5

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ......... Cut 3 ......... Strand 5, 5a ......... Reinforcing bar 7, 7a, 7b, 25, 55 ......... Rotation coupling jig 9 ......... Sleeve 11 ......... Angle material 15, 41 ... …… Screw stud 16, 17, 46, 47, 53 ……… Nut 19 ……… Resin 21, 44 ……… Screw part 27 ……… Press material 28 ……… Concave part 29 ……… Head 31… …… Stud 32 ………… Bottom 37 ……… Release prevention 39 ……… Key hole 39a, 39b ……… Hole 45 ……… Reinforcement ring 57a, 57b ……… Half-type jig 59a ……… Outward groove 59b ......... Inward groove

Claims (7)

A cylindrical member for holding a strand which is an axis,
An angle member fixed to a band provided around the strand; and
An end portion is fixed to the outer surface of the cylindrical member , and a bar member that penetrates the angle member;
A member installed on the bar to prevent the angle member from coming off the bar;
Consists of
The coupling jig, wherein the cylindrical member rotates with respect to the angle member.   The coupling jig according to claim 1, wherein the cylindrical member is a steel pipe, the strand is passed through the steel pipe, and an adhesive is filled between the strand and the steel pipe. A cylindrical member for holding a strand which is an axis,
An angle member fixed to a band provided around the strand; and
An end is fixed to the cylindrical member, and is provided protruding from the cylindrical member, and a bar that penetrates the angle member,
A member installed on the bar to prevent the angle member from coming off the bar;
Consists of
The cylindrical member rotates with respect to the angle member,
The cylindrical member has a first semi-cylindrical body having an outward groove formed by bending two sides in the cylinder axis direction outward, and an inward groove formed by bending the two sides in the cylinder axis direction inward. A second half cylinder,
The strand is arranged in the first half cylinder, and the outward groove and the inward groove are fitted together to integrate the first half cylinder and the second half cylinder. A coupling jig characterized by A cylindrical member for holding a strand which is an axis,
A press material that is molded into a concave mold, has a hole in the bottom of the concave mold, and the upper end of the concave mold is fixed to a band provided around the strand;
A diameter-enlarged portion provided at one end is disposed inside the concave mold through the hole, and the other end is fixed to the cylindrical member,
Comprising
The cylindrical jig rotates with respect to the said press material, The coupling jig characterized by the above-mentioned. The hole continuously arranges a first hole whose diameter is larger than the diameter of the enlarged diameter part and a second hole whose diameter is smaller than the diameter of the enlarged diameter part and larger than the diameter of the normal part of the bar. And
After the diameter-expanded portion is disposed in the concave mold through the first hole, the bar is moved in the direction of the second hole to close the first hole. Item 5. The connecting jig according to Item 4.   6. A casing comprising a strand and a band which are coupled using the coupling jig according to claim 1.   The housing according to claim 6, wherein a reinforcing ring is installed inside the band.

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