JP2816807B2 - End support structure for tendon - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end support structure for a tendon in a building structure or the like.

[0002]

2. Description of the Related Art There is a technique disclosed in Japanese Utility Model Laid-Open No. 2-99125 as a conventional structure for supporting an end portion of a tendon. The disclosed technology includes a support plate supported by a structure such as concrete, and a fixing metal member for preventing a tension member such as a PC steel material penetrating the support plate from coming off the support plate. The opposing surfaces of the pressure plate and the fixing bracket are formed into spherical surfaces that fit each other, and a lubricant layer is interposed between the opposing surfaces.

[0003]

However, in the above-mentioned conventional end member supporting structure of the tendon, the supporting plate and the fixing metal have no protection means and are exposed to the atmosphere. In addition, the support plate and the fixing bracket are exposed to wind and rain, and the fixing bracket, the spherical surface and the like are rusted, or dust adheres, and the support plate and the fixing bracket cannot be adjusted. There is a problem in that the angle followability due to the work and the centripetal action is hindered.

The present invention has been made in view of the above-mentioned problems. It is an object of the present invention to provide a receiving member in which a moment is applied from a bending property to a curved surface plate by a tension applying operation of a tension member. The problem is that the stress is converted to the arch shape, which is the property, and the stress can be dispersed, and the spherical washer or the like becomes rusted or dust adheres, making it impossible to adjust. An object of the present invention is to provide a tendon end support structure that can eliminate the problem.

[0005]

In order to achieve the above-mentioned object, the present invention is directed to a method in which a spherical sliding contact surface of a spherical washer is brought into sliding contact with a concave spherical inner surface of a fixed-side receiving member having a hemispherical hollow bag shape . A fixed end of the tension member penetrates through the fixed receiving body and the spherical washer and is locked to the spherical washer by a locking mechanism, and the spherical washer and the locking mechanism are at least fixed to the fixed side. The fixed-side support portion accommodated in the accommodating portion formed by the seat and the spherical sliding contact surface of the spherical washer are brought into sliding contact with the concave spherical inner surface of the movable-side seat having a semi- spherical hollow bag shape , The movable-side end portion of the tension member penetrates through the movable-side receiving body and the spherical washer and is held on the spherical-side washer by a tension applying mechanism, and the spherical washer and the tension-applying mechanism are connected to at least the movable-side receiving section. A movable-side support portion housed in a housing portion formed by the seat body. The receiving portion on the fixed-side support portion side includes the fixed-side receiving member and a half provided detachably at an end of the fixed-side receiving member.
Yes and more configuration and spherical bag-shaped cover, housing portion of the movable supporting portion side, wherein the movable seat member, hemispherical bag-shaped cover which is provided detachably on the end of the movable seat member May be configured.

[0006]

With this configuration, when the tension member is to be tensioned, the tension applying mechanism is operated at the movable-side support portion to pull in the tension member.

In the fixed-side support portion, the spherical washer and the locking mechanism are accommodated at least in an accommodation portion formed by the fixed-side receiving body. In the movable-side support portion, the spherical surface washer is provided. Since the washer and the tension applying mechanism are housed at least in a housing part formed by the movable-side receiving body, the spherical washer or the like becomes rusted, or dust or the like adheres, and cannot be adjusted. The problem of hindrance to the angle follow-up due to the tensioning work and the centripetal action of the present invention is prevented.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a perspective view of a building structure provided with a tendon end supporting structure according to a first embodiment of the present invention, and FIG. 2 (1) is an example of the building structure. 2 (2) is an explanatory view of another mounting portion of the movable-side support portion in the tension member end support structure according to the first embodiment of the present invention, and FIG. 3 is the same end support. FIG. 4 is a front view of a spherical washer in an end support structure of the tendon, and FIG. 5 is a cross-sectional view of a movable support in the end support structure of the tendon.

[0010] For example, a prestress is introduced into the roof structure A of the top opening type, in which only the audience accommodating stand surrounding the ground is covered with the roof slab 2, so as to reduce the cross section of the structural members and reduce the weight of the entire roof structure. There are cases. In this case, as shown in FIGS. 1 and 2 (1), an opening frame 3 is provided at an end of the roof slab 2 supported by the column 1, and a tension member fixed side support portion is provided below the opening frame 3. And a movable supporting portion 5 of a tendon material is provided in a portion of the roof slab 2 near the support 1, and a fixed supporting portion 4 is provided.
One end of a wire 6 serving as a tension member is fixed to the wire 6 and the other end of the wire 6 is supported by a movable-side support portion 5 to apply tension to the wire 6 in the direction of the arrow (see FIG. 1).

As shown in FIG. 3, the fixed-side support portion 4 includes a hemispherical and hollow fixed-side receiving member 7, a spherical washer 8,
A washer 10 and a cover 25 are provided. The fixed-side receiving body 7 has a concave spherical inner surface 7a, and a hole 1 at the center thereof.
A plurality of mounting screw seats 13 are fixed to the end face 12 of the fixed-side receiving body 7 at predetermined intervals in the circumferential direction. The fixed-side receiving member 7 is fixed to the lower end of the opening frame 3 by a support bracket 14 with the hole 11 facing the center of the movable-side support 5.

As shown in FIG. 4, the spherical washer 8 is formed by vertically dividing a hemisphere into two parts and dividing the hemisphere into two parts 15a and 15b.
Are formed, and semicircular recesses 16a, 16b are formed on the division surfaces of these divisions 15a, 15b, and the divisions 15a, 15b are formed.
15b, a notch 17 is formed in each of the screw seats 18
Are provided, and the screw seat portions 18 are provided in the divided portions 15a and 15b.
Are formed, and the divided portions 15a, 15b
And the screw 24 inserted into the hole 18a of the screw seat portion 18 is screwed into the screw hole 19 to be integrally formed. The spherical washer 8 has a spherical sliding contact surface 8a and a flat end surface 8a.
b and a hole 8c composed of concave portions 16a and 16b.

The cover 25 is substantially hemispherical and hollow, and has a screw insertion hole 25a formed at an end thereof at a predetermined interval in the circumferential direction.

The fixed end 6a of the wire 6 is inserted into a casing pipe 22 and is fixed to an anchor head 23 integral with the casing pipe 22, so that the casing pipe 22 and the anchor head 23 are locked. The mechanism B is configured. This casing pipe 22
Is smaller than the diameter of the hole 8c of the spherical seat 7.

Then, the casing pipe 22 is inserted through the washer 10 and the anchor head 23 is brought into contact with the washer 10, and the wire 6 and the casing pipe 22 are inserted through the hole 11 of the fixed-side receiving body 7, and 22
, The divided portions 15a and 15b of the spherical washer 8 are aligned at the divided surface, and the screw 24 inserted into the hole 18a of the screw seat 18 is screwed into the screw hole 19 to be integrated to form the spherical washer 8 Is attached to the casing pipe 22, and the wire 6 is pulled toward the movable-side support portion 5, so that the spherical sliding contact surface 8 a of the spherical washer 8 is changed into the concave spherical inner surface 7 a of the fixed-side receiving body 7.
The washer 10 is brought into contact with the end face 8 b of the spherical washer 8, and a gap in which the casing pipe 22 can move is provided between the casing pipe 22 and the hole 11 of the fixed-side receiving body 7. m exists.

A cover 25 is provided on an end surface of the fixed-side receiving body 7 by attaching an end of the cover 25 to the mounting screw seat 13 with a screw 26, and the spherical washer 8 and the washer are provided. The anchor head 10 and the anchor head 23 are housed in a housing part formed by the fixed-side receiving body 7 and the cover 25.

As shown in FIG. 5, a support bracket 27 is provided on the movable side support portion 5 at a position near the support column 1 of the roof slab 2.
Is provided via A loose hole 29 is formed in a mounting plate portion 28 of the support bracket 27, and the support bracket 27 is mounted on a portion of the roof slab 2 near the support column 1 by a bolt 38 and a nut 39 inserted into the loose hole 29. Position adjustment is possible. Note that the support bracket 27 may be attached by welding.

The movable-side support portion 5 has a substantially semi-spherical and hollow movable-side receiving body 30, a spherical washer 31, a washer 33,
A plurality of filler plates 34 and a cover 40 are provided.

The movable-side seat 30 has a concave spherical inner surface 30a.
A hole 35 is formed at the center thereof, and a plurality of mounting screw seats 37 are fixed to the end face 36 of the movable-side receiving body 30 at predetermined intervals in the circumferential direction. is there. And
The movable-side receiving body 30 has the hole 35 fixed to the tip of the support bracket 27 toward the center of the fixed-side support 4.

The spherical washer 31 has the same configuration as the spherical washer 8 shown in FIG. The washer 33 is obtained by dividing a disk into two parts, and has a hole 47 at the center thereof. Further, the filler plate 34 is obtained by dividing a disk into two parts, and has a hole 41 formed at the center thereof.

The movable end 6b of the wire 6 is inserted into a casing pipe 48 and is fixed to an anchor head 49 integral with the casing pipe 48. The outer diameter of the casing pipe 48 is smaller than the diameter of the hole 35 of the movable-side receiving body 30, and the outer diameter of the anchor head 49 is slightly smaller than the diameter of the hole 35. A screw portion 42 is formed on the outer peripheral portion of the anchor head 49, and the tension applying mechanism C is constituted by the anchor head 49 and the outer peripheral screw portion 42. The cover 40 is substantially hemispherical and hollow, and has a screw insertion hole 43 formed at an end thereof at a predetermined interval in the circumferential direction.

Then, the anchor head 49 is inserted through the hole 35 of the movable-side receiving body 30, and the anchor head 49, the casing pipe 48 and the wire 6 are connected to the concave spherical inner surface 30a side of the movable-side receiving body 30. Position
A coupler 44 at the tip of a pull rod 44 a having a jack (not shown) connected to the screw portion 42 of the anchor head 49.
, And the jack is driven to draw the wire 6.

In this state, with the casing pipe 48 inside, the divided portions 15a and 15b of the spherical washer 31 are aligned at the divided surfaces, and the screw 24 inserted through the hole 18a of the screw seat 18 is inserted into the screw hole 19. The spherical washer 31 is screwed and integrated to provide the spherical washer 31 on the casing pipe 48.
The spherical sliding contact surface 31a is brought into contact with the concave spherical inner surface 30a, and the washer 33 is brought into contact with the end surface 8b of the spherical washer 31.

Next, the washer 33 is interposed between the end face 8b of the spherical washer 31 and the anchor head 49 with the casing pipe 48 as a center, and the sealing material 33a
The filler plate 34 is interposed between the washer 33 and the anchor head 49 at the split surface thereof, the jack is loosened to loosen the wire 6, and the spherical washer 31 is interposed. Then, the washer 33 is brought into contact with the end face 8b, and the filler plate 34 is brought into contact with the end face of the anchor head 49. In this state, the coupler 53 is removed from the anchor head 49.

Next, a cover 40 is provided on the end surface of the movable-side receiving body 30 with its end attached to the mounting screw seat 37 with a screw 45, and the spherical washer 31 and the washer 33 are provided.
, The filler plate 34 and the anchor head 49 are housed in a housing part formed by the movable-side seat 30 and the cover 40. In this case, a gap n in which the casing pipe 48 can move exists between the casing pipe 48 and the hole 35 of the movable-side receiving body 30.

Therefore, when the wire 6 is to be tensioned, the screw 45 is removed from the movable side support portion 5 to remove the cover 40 from the movable side seat 30, and the screw portion 42 of the anchor head 49 is screwed. As shown in FIG. 6, the coupler 44 is screwed together, the jack is driven to draw the wire 6, the filler plate 34 is inserted between the anchor head 49 and the washer 33, and the number of the filler plates 34 is increased. After the wire 6 is thus tensioned, the coupler 44 is removed, and then the cover 40 is attached to the movable seat 30 again.

In the fixed-side support portion 4, the spherical sliding surface 8a of the spherical washer 8 is in sliding contact with the concave spherical inner surface 7a of the fixed-side receiving body 7, so that the casing pipe 22 and the fixed-side receiving surface There is a gap m between the hole 11 of the body 7 and the casing pipe 22 in which the casing pipe 22 can move. In the movable-side support portion 5, the spherical sliding surface 31a of the spherical washer 31 is connected to the concave spherical inner surface 30a. And the wire 6 is tensioned because there is a gap n between the casing pipe 48 and the hole 35 of the movable-side seat 30 in which the casing pipe 48 can move. Then, the spherical washers 8, 31 slide on the concave spherical inner surfaces 7a, 30a, and the angle following is performed by the centripetal action.

The fixed-side receiving member 7 and the movable-side receiving member 30 are hollow bodies, and the fixed-side and movable-side receiving members 7, 30 have spherical spherical washers 8, 30 on their concave spherical inner surfaces 7a, 30a. 3
Since the first spherical sliding contact surfaces 8a and 31a are in sliding contact with each other, the moment is converted from the bending property to the arch property which is the property of the curved plate, and the stress can be dispersed.

Further, in the fixed side support portion 4,
A cover 25 is provided on an end surface of the fixed-side receiving body 7, and the spherical washer 8, the washer 10, and the anchor head 2 are provided.
3 is accommodated in an accommodation portion formed by the fixed-side receiving member 7 and the cover 25. In the movable-side supporting portion 5, a cover 40 is provided on an end surface of the movable-side receiving member 30. The spherical washer 31, the washer 33, the filler plate 34, and the anchor head 49 are accommodated in an accommodating portion formed by the movable-side receiving body 30 and the cover 40. 33, the filler plate 34 and the anchor head 49 are not exposed to the elements. For this reason, the spherical washer 31 and the like are rusted or dust adheres to the wire 6 and cannot be adjusted, thereby preventing a problem that the work of applying tension of the wire 6 and the ability to follow the angle due to the centripetal action are hindered.

(Embodiment 2) In this embodiment, a rod 60 is used in place of the wire 6 as the tension member, and one end of the rod 60 is fixed to the fixed-side support portion 61.
The other end of the rod 60 is supported by the movable-side support portion 62 to apply tension to the rod 60. As shown in FIG. 8, the fixed-side support portion 61 includes a fixed-side receiving body 63 that is hemispherical and hollow, a spherical washer 64, a washer 65, and a cover 66.

The fixed-side receiving body 63 has a concave spherical inner surface 63a.
A hole 67 is formed in the center thereof, and a plurality of mounting screw seats 69 are fixed to the end face 68 of the fixed-side receiving body 63 at predetermined intervals in the circumferential direction. is there. And
The fixed-side receiving body 63 has the hole 67 fixed to the lower end of the opening frame 3 by a support bracket 71 toward the center of the movable-side support 62 by bolts or welding.

The spherical washer 64 has a hemispherical shape.
It has a spherical sliding contact surface 64a, a flat end surface 64b, and a hole 70. The cover 66 is substantially hemispherical and hollow, and has a screw insertion hole 66a formed at an end thereof at a predetermined interval in the circumferential direction. Further, screw portions 72 and 73 are formed at the fixed end 60a and the movable end 60b of the rod 60, respectively.

Then, the hole 67 of the fixed-side receiving body 63 is formed.
The fixed-side end 60a of the rod 60 is inserted through the hole so that the fixed-side end 60a protrudes toward the concave spherical inner surface 63a, and the spherical washer 64 can be moved to the fixed-side end 60a through the hole 70. By attaching the washer 65 to the screw portion 72 of the fixed side end portion 60a and screwing a nut 74 to pull the rod 60 toward the movable side support portion 62, a spherical sliding contact of the spherical washer 64 is performed. The surface 64a is in sliding contact with the concave spherical inner surface 63a of the fixed-side receiving body 63, the washer 65 is in contact with the end surface 64b of the spherical washer 64, and the end surface 68 of the fixed-side receiving body 63 is covered with a cover 66. But this cover 66
Is attached to the mounting screw seat 69 with a screw 75, and the spherical washer 64, the washer 65, and the nut 74 are housed in a housing formed by the fixed-side receiving body 63 and the cover 66. I have. In this case, the rod 6
A gap p where the rod 60 can move exists between 0 and the hole 67 of the fixed-side receiving body 63. The screw portion 72 of the fixed-side end 60a of the rod 60 and the screw portion 72
The locking mechanism B is constituted by the washer 65 and the nut 74 provided in the above.

The movable-side support portion 62 is provided on a portion of the roof slab 2 near the column 1 as shown in FIG.
6 are provided. A loose hole 78 is formed in the mounting plate portion 77 of the support bracket 76,
The support bracket 76 is fixed to the support column 1 of the roof slab 2 by bolts 79 and nuts 80 inserted into the loose holes 78.
Attached to a nearby part, the position can be adjusted. The movable-side support portion 62 includes a movable-side receiving body 81 that is substantially hemispherical and hollow, a spherical washer 82, a washer 83, and a cover 84. Note that the support bracket 76 may be attached by welding.

The movable-side receiving member 81 has a concave spherical inner surface 81a.
A hole 85 is formed at the center thereof, and a plurality of mounting screw seats 87 are fixed to the end face 86 of the movable-side receiving body 81 at predetermined intervals in the circumferential direction. is there. And
The movable-side receiving member 81 has the hole 85 fixed to the front end of the support bracket 76 toward the center of the fixed-side support 61.

The spherical washer 82 is hemispherical, and has a spherical sliding contact surface 82a, a flat end surface 82b, and a hole 88.
The cover 84 is substantially hemispherical and hollow.
At its end, a screw insertion hole 9 is provided at a predetermined interval in the circumferential direction.
0 is formed.

The hole 85 of the movable receiving body 81
The movable side end portion 60b of the rod 60 is inserted through the hole so that the movable side end portion 60b protrudes toward the concave spherical inner surface 81a, and the spherical washer 82 is movable in the movable side end portion 60b through the hole 88. The washer 83 is provided on the screw portion 73 of the mounting and movable side end 60b, and a nut 91 is screwed together. By tightening the nut 91, the rod 60 is tensioned and the spherical washer 82 is brought into spherical contact with the spherical washer 82. The surface 82a is in sliding contact with the concave spherical inner surface 81a of the movable-side receiving body 81, and the washer 83 is strongly in contact with the end surface 82b of the spherical washer 82. A cover 84 is provided on an end surface of the movable-side receiving body 81 by attaching an end of the cover 84 to the mounting screw seat 87 with a screw 92, and the spherical washer 82 and the washer 83 are provided.
And the nut 91 are accommodated in an accommodating portion formed by the movable-side receiving body 81 and the cover 84. In this case, a gap q where the rod 60 can move exists between the rod 60 and the hole 85 of the movable-side seat 81. And
The threading portion 73 of the movable side end 60b of the rod 60, the washer 83 and the nut 91 provided on the threading portion 73 constitute a tension applying mechanism C.

Therefore, when the rod 60 is to be tensioned, the screw 92 is removed from the movable-side support portion 5 to remove the cover 84 from the movable-side receiving member 81, and the nut 91 is rotated to rotate the rod 60. By pulling in. Thus, after the rod 60 is tensioned,
The cover 84 is attached to the movable seat 81 again.

In the fixed-side support portion 61, the spherical sliding contact surface 64a of the spherical washer 64 is in sliding contact with the concave spherical inner surface 63a of the fixed-side receiving member 63, and the rod 60 and the fixed-side receiving member 63 are fixed. There is a gap p between which the rod 60 can move and the hole 67 of the movable member 63.
In this case, the spherical sliding surface 82 a of the spherical washer 82 is in sliding contact with the concave spherical inner surface 81 a, and a gap in which the rod 60 can move is provided between the rod 60 and the hole 85 of the movable-side receiving body 81. When tension is applied to the rod 60 due to the presence of q, the spherical washers 64, 82 slide on the concave spherical inner surfaces 63a, 81a, and the angle following is performed by centripetal action.

Further, the fixed-side receiving body 63 and the movable-side receiving body 81 are hollow bodies, and spherical washers 64, 81a are provided on the concave spherical inner surfaces 63a, 81a of the fixed-side and movable-side receiving bodies 63, 81, respectively. Since the spherical sliding surfaces 64a and 82a of the 82 are in sliding contact with each other, the moment is converted from the bending property to the arch property which is the property of the curved plate, so that the stress can be dispersed.

In addition, the fixed and movable seats 63,
Covers 66 and 84 are provided on the end face of 81, and the spherical washers 64 and 82, washers 65 and 83, nuts 74,
Since 91 is accommodated in the accommodating portion formed by the fixed-side and movable-side seats 63 and 81 and the covers 66 and 84,
The spherical washers 64, 82, washers 65, 83, and nuts 74, 91 are not exposed to the weather. For this,
It is possible to prevent the spherical washer 64, 82 or the like from being rusted or dust or the like from adhering to the rod 60, thereby making it impossible to adjust the tension.

Further, as described above, as the building structure A having the tendon end support structure according to the first and second embodiments of the present invention, as shown in FIG. An opening frame 3 is provided at an end of the roof slab 2 supported by the slab, a fixed-side support portion 4 is provided at a lower portion of the opening frame 3, and a movable-side support portion 5 is provided at a position near the support 1 of the roof slab 2. And a wire 6 (or a rod 6)
0) is fixed, and the other end of the wire 6 (or the rod 60) is supported by the movable-side support portion 5, so that tension is applied to the wire 6 (or the rod 60). Building structure A without pillar 1 as shown in 2 (2)
In the case of (1), the movable-side support portion 5 is provided on the base side of the roof slab 2.

Further, as the building structure A, as shown in FIG.
0), the fixed side support portions 4 and 61 are provided on the opening side portion 93a of the roof plate 93.
In addition, the movable-side support portions 5 and 62 are mounted on the upper portions of the columns 94a, respectively. Note that the fixed-side support portions 4 and 61
And the mounting portions of the movable-side support portions 5 and 62 are changed, and the two support portions 4, 61, 5, and 62 are used as fixed support portions, and the fixed support portions 4,
It is natural that the movable support portions 61 and 62 may be reversed.

(Embodiment 3) In this embodiment, FIG.
As shown in FIGS. 1 and 12 (1) and (2), an opening frame 96 is provided at an end of a roof slab 95 supported by a support post 94, and a tension member fixed-side support portion is provided below the opening frame 96. 97, a movable side support 98 of a tendon is provided above the column 94 of the roof slab 95, one end of a rod 99 as a tendon is fixed to the fixed side support 97, and the other end of the rod 99 is provided. The portion is supported by the movable-side support portion 98, and tension is applied to the rod 99.

The fixed-side support portion 97 is provided in the second embodiment.
The configuration is the same as that of the fixed-side support portion 61 described above. Also,
As shown in FIG. 13, the movable side support 98
(Section steel) 94 is fixed to the web 100. That is, the movable-side support portion 98 includes a movable-side receiving body 101, a spherical washer 102, washers 103 and 104, and a cover 105.

The movable-side receiving body 101 is formed by forming a hemispherical spherical receiving portion 107 at the other end of a cylindrical body 106 having one end opened, has a concave spherical inner surface 101a, and has a central portion at the center thereof. Has a hole 108 formed therein, and the movable-side seat 10
A plurality of mounting screw holes 110 are formed in the one end face portion 109 at predetermined intervals in the circumferential direction. Then, the movable-side seat 101 fits the hole 108 into the fixed-side support 9.
7 is fixed to the web 100 toward the center.

The spherical washer 102 is hemispherical and has a spherical sliding contact surface 102a, a flat end surface 102b, and a hole 111. Further, the cover 105 is a disk, and a screw insertion hole 105a is provided at a peripheral portion thereof at a predetermined interval in a circumferential direction.
Is formed.

The hole 1 of the movable-side seat 101 is
08, the movable side end 99b of the rod 99 is inserted, and the movable side end 99b is projected toward the concave spherical inner surface 101a.
The spherical washer 102 is inserted into the hole 1 at the movable end 99b.
11, the washer 103, 104 is provided on the screw portion 112 of the movable end portion 99b, a nut 113 is screwed, and the nut 113 is tightened, so that the spherical sliding contact surface of the spherical washer 102 is formed. 102a is in sliding contact with the concave spherical inner surface 101a of the movable-side receiving member 101, and a washer 103 is in contact with an end surface 102b of the spherical washer 102. A cover 105 is provided on the end surface of the movable-side receiving member 101. The spherical washer 102, the washers 103 and 104, and the nut 113 are housed in a housing formed by the movable-side receiving body 101 and the cover 105. In this case, the rod 9 is inserted between the rod 99 and the hole 108 of the movable-side seat 101.
There is a gap v in which 9 can move. And rod 9
9, the screw portion 112 of the movable end portion 99b and the screw portion 1
12 and nuts 11 provided on the
3 constitute a tension applying mechanism C.

Therefore, when the rod 99 is to be tensioned, the screw 114
, And the cover 105 is removed from the movable-side seat 101, and the nut 113 is rotated to pull in the rod 99. After the rod 99 is tensioned in this way, the cover 105 is again moved to the movable seat 10.
Attach to 1.

In the fixed side support portion 97 (the same as the fixed side support portion 61 shown in the second embodiment), the spherical sliding contact surface 64a of the spherical washer 64 is formed on the fixed side receiving body 63. There is a gap p between the rod 60 and the hole 67 of the fixed-side receiving body 63 in which the rod 60 can move, and the movable-side supporting part 98 is in sliding contact with the concave spherical inner surface 63a. , The spherical sliding contact surface 1 of the spherical washer 102
02a is in sliding contact with the concave spherical inner surface 101a, and a gap v in which the rod 99 can move exists between the rod 99 and the hole 108 of the movable-side receiving body 101. When tension is applied to 99, the spherical washers 64, 102 slide on the concave spherical inner surfaces 63a, 102a,
Angle following is performed by the centripetal action.

The fixed-side receiving body 63 and the movable-side receiving body 101 are hollow bodies, and the fixed-side and movable-side receiving bodies 63 and 101 have spherical washer 64 on the concave spherical inner surfaces 63a and 101a. Since the members 102 are in sliding contact, the moment is converted from the bending property to the arch property which is the property of the curved plate, and the stress is dispersed.

Moreover, the fixed and movable seats 63,
Covers 66 and 105 are provided on the end surface of the 101, and the spherical washers 64 and 102 and washers 65, 103 and 104 are provided.
And the nuts 74 and 113 are accommodated in an accommodation portion formed by the fixed-side and movable-side seats 63 and 102 and the covers 66 and 105.
The washers 65, 103, 104 and the nuts 74, 113 are not exposed to the weather. For this purpose, the spherical washer 6
4, 102 and the like are rusted, or dust adheres to the rod 99, so that the adjustment cannot be performed.

(Embodiment 4) This embodiment is shown in FIGS.
0 is shown. In this embodiment, as shown in FIG. 14, when the H-beams 115, 116, and 117 are located at the upper, interrupted, and lower stages, the distance between the top ends of the upper beam 115 and the middle beam 116 is reduced. And the middle beam 116 and the lower beam 1
A rod 1 as a tendon between the tip portions of the rod 17
This is an end support structure of the rod 118 when the connection is made at 18.

FIGS. 15 and 16 show the upper beam 115.
FIG. 1 shows an end support structure of a rod 118 fixed to a fin.
7, FIG. 18 shows a rod 118 fixed to a middle beam 116.
FIGS. 19 and 20 show the lower beam 11.
7 shows the end support structure of the rod 118 fixed to 7. That is, the end support structure of the rod 118 fixed to the upper beam 115 is the fixed support 120. Upper beam 11
5, a holding member 122 is fixed to the lower flange portion 121. The holding member 122 crosses the plates 123 and 124 in a cross shape, and cuts the plates 123 and 124 to reach the lower edge. Notches 123a, 1
24a, and these notches 123
The fixed-side support part 120 is fixed to the lower part of a and 124a.

The fixed-side support portion 120 is a fixed-side seat 1
25 and a spherical washer 126. The fixed-side receiving body 125 is a hemispherical hollow body, and has a concave spherical inner surface 125.
a, and a hole 129 is formed at the center thereof.
The fixed-side receiving body 125 is fixed to the holding member 122 by welding its end to the periphery of the notches 123a and 124a. The spherical washer 126 is hemispherical, and has a spherical sliding contact surface 126a and a flat end surface 126b.
And a hole 127.

Then, the hole 1 of the fixed-side seat 125 is formed.
29, the fixed-side end portion 118a of the rod 118 is inserted.
The fixed-side end 118a is projected toward the concave spherical inner surface 125a, and the spherical-side washer 126 is attached to the fixed-side end 118a.
Is movably mounted in the hole 127, and the fixed side end 118
The nuts 129a and 129b are screwed into the threaded portion 128 of FIG. 1A, and the nuts 129a and 129b are tightened, so that the spherical sliding contact surface 126a of the spherical washer 126 is formed into a concave spherical inner surface 125a of the fixed-side receiving member 125. Is in sliding contact with The spherical washer 126 and the locking mechanism B
The screw portion 128 and the nuts 129a and 129b that are included in the holding member 122 are accommodated in an accommodation portion formed by the cutout portions 123a and 124a of the holding member 122 and the fixed-side receiving body 125. In this case, there is a gap w between the rod 118 and the hole 129 of the fixed-side receiver 125 where the rod 118 can move.

At the tip of the middle beam 116, circular holes 132, 133 are formed in the upper and lower flanges 130, 131.
Is formed in the web portion 134 between the upper and lower flange portions 130 and 131 from the circular hole 132 to the circular hole 13.
A notch 135 that opens to 3 is formed.

The circular hole 1 of the upper flange portion 130
The upper movable side support portion 136 is fixed to 32, and the lower movable side support portion 137 is fixed to the circular hole 133 of the lower flange portion 131. The upper movable-side support portion 136 includes a movable-side receiving body 138 and a spherical washer 139.

The movable-side seat 138 is a hemispherical hollow body, has a concave spherical inner surface 138a, and has a hole 140 formed in the center thereof. And, this movable side seat 1
Numeral 38 has its end welded to the periphery of the circular hole 132 and fixed to the upper flange portion 130. The outer surface of the movable-side seat 138 is connected to the upper flange 13.
0 through a plurality of ribs 141. The spherical washer 139 is hemispherical and has a spherical sliding contact surface 139a, a flat end surface 139b, and a hole 142.

A cylindrical cover 143 is interposed between the upper and lower flange portions 130 and 131 at a notch 135 provided on the web portion 134. Upper and lower flange portions 130 and 131
And it is welded to the upper and lower parts of the notch 135. An opening 144 is formed in a portion of the periphery of the cover 143 opposite to the web portion 134. The upper and lower right and left portions above and below the opening 144 in the peripheral portion of the cover 143 are connected to the upper and lower flange portions 130 and 13 via the ribs 145.
1 is connected to the inner surface.

Then, the hole 1 of the movable-side seat 138 is formed.
The movable side end portion 118b of the rod 118 is inserted through 40,
The movable end 118b is projected toward the concave spherical inner surface 138a, and the movable washer 139 is attached to the movable end 118b.
Is movably mounted in the hole 142, and the movable side end 118
The nuts 147a and 147b are screwed into the screw portion 146 of FIG. 2B, and the nuts 147a and 147b are tightened. The spherical washer 139 and the screw portion 146 and the nuts 147a and 147b constituting the tension applying mechanism C are accommodated in an accommodating portion formed by the cover 143. In this case, a gap x where the rod 118 can move exists between the rod 118 and the hole 140 of the movable-side receiving body 138. The cover tube 14 is attached to the rod 118.
The cover tube 148 is attached to mounting members 149 and 150 provided on the fixed-side receiving member 125 and the movable-side receiving member 138 at its upper and lower ends by screws (not shown). is there.

The structure of the lower movable side support portion 137 is the same as that of the upper movable side support portion 136, and the direction is reversed.

The end support structure of the rod 118 fixed to the lower beam 117 is a fixed support 151 as shown in FIGS. 19 and 20, and the fixed support 151 is connected to the lower beam 117. Is fixed upwardly to the upper flange portion 152. That is, a circular hole 153 is formed in the upper flange portion 152, and the web portion 154 of the beam 117 is formed.
Is cut off at the end. And the circular hole 153
The fixed-side support portion 151 is attached to the fixed portion. The fixed-side support portion 151 includes a fixed-side receiving body 155 and a spherical washer 1.
56.

The fixed-side receiving body 155 is a hemispherical hollow body, has a concave spherical inner surface 155a, and has a hole 157 formed at the center thereof. And, this fixed side seat 1
55 has its end welded to the periphery of the circular hole 153. The spherical washer 156 is hemispherical and has a spherical sliding contact surface 156a, a flat end surface 156b, and a hole 158.

A cylindrical cover 161 is interposed between the upper and lower flanges 152 and 159 of the beam 117 at a notch 160 at the end of the web 154. The upper and lower portions of the cover 161 are welded to the upper and lower flange portions 152 and 159 and the notch portion 160. An opening 162 is formed in a portion of the periphery of the cover 161 opposite to the web portion 154. An outer surface portion of the fixed-side receiving body 155 is connected to the upper flange portion 152 by a plurality of ribs 163, and right and left portions below and above the opening portion 162 in the peripheral portion of the cover 161 correspond to the rib 164. Through the upper and lower flange portions 15
2, 159 are connected to the inner surface.

Then, the hole 1 of the fixed-side seat 155 is formed.
The fixed side end 118a of the rod 118 is inserted through 57
The fixed-side end 118a is projected toward the concave spherical inner surface 155a, and the spherical washer 156 is attached to the fixed-side end 118a.
Is movably mounted in the hole 158, and the fixed end 118
The nuts 166a and 166b are screwed into the threaded portion 165 of FIG. 1A, and the nuts 166a and 166b are tightened. Is in sliding contact with The spherical washer 156 and the locking mechanism B
The screw portion 165 and the nuts 166a and 166b which are included in the cover 161 are accommodated in an accommodation portion formed by the cover 161. In this case, there is a gap y between the rod 118 and the hole 157 of the movable-side seat 155 in which the rod 118 can move.

The connection between the beam 117 and the middle beam 116 will be described. The hole 1 in the movable-side seat 138 of the lower movable-side support portion 137 provided on the middle beam 116 is described below.
The movable side end portion 118b of the rod 118 is inserted through 40,
The movable end 118b is projected toward the concave spherical inner surface 138a, and the movable washer 139 is attached to the movable end 118b.
Is movably mounted in the hole 142, and the movable side end 118
The nuts 147a and 147b are screwed into the screw portion 146 of FIG. 2B, and the nuts 147a and 147b are tightened. The spherical washer 139 and the screw portion 146 and the nuts 147a and 147b constituting the tension applying mechanism C are accommodated in an accommodating portion formed by the cover 143. In this case, a gap x where the rod 118 can move exists between the rod 118 and the hole 140 of the movable-side receiving body 138. The cover tube 16 is attached to the rod 118.
The cover tube 167 is attached at its upper and lower ends to mounting members 168 and 169 provided on the movable-side seat 138 and the fixed-side seat 155 by screws (not shown). is there.

Therefore, the upper and lower rods 118
When tension is applied to the movable side support portions 136, 13
7, a rotary jig such as a spanner is inserted through the opening 144 of the cover 143, and the upper and lower nuts 147a, 1
This is performed by rotating the rod 47b to retract the rod 118.

In the fixed-side support portions 120 and 151, the spherical sliding contact surfaces 126a and 126a of the spherical washers 126 and 156 are provided.
56a is in sliding contact with the concave spherical inner surfaces 125a and 155a of the fixed-side receiving members 125 and 155, and the rod 118
And the holes 129, 15 of the fixed-side seats 125, 155
7, there are gaps w and y in which the rod 118 can move, and in the movable side support portions 136 and 137, the spherical sliding contact surface 139a of the spherical washer 139 slides on the concave spherical inner surface 138a. Between the rod 118 and the hole 140 of the movable seat 138.
When a tension is applied to the rod 118 due to the existence of the gap x in which the rod 8 can move, the spherical washer 139 slides on the concave spherical inner surface 138a, and the angle following is performed by the centripetal action.

In the fixed-side support portions 120 and 151, the spherical washers 126 and 156 are in sliding contact with the concave spherical inner surfaces 125a and 155a of the fixed-side receiving members 125 and 155, respectively. Supports 136, 137
In the above, the spherical washer 139 is connected to the concave spherical inner surface 138a.
, The moment is converted from the bending property to the arch property which is the property of the curved plate, and the stress is dispersed.

Further, in the fixed side support portion 120, the spherical washer 126, the screw portion 128 and the nuts 129a and 129b constituting the locking mechanism B are formed by the holding member 12
2 notches 123a, 124a and fixed-side seat 125
In the fixed-side support portion 151, the spherical washer 156, the screw portion 165 and the nuts 166a, 166 constituting the locking mechanism B are provided.
“b” is accommodated in an accommodating portion formed by the cover 161, and in the movable-side support portions 136 and 137, the spherical washer 139 and the screw portion 1 forming the tension applying mechanism C are provided.
46 and nuts 147a and 147b
43, the spherical washers 126, 156, 139 and the nuts 129a, 129
b, 166a, 166b, 147a, and 147b are not exposed to wind and rain. For this purpose, the spherical washer 12
6, 156, 139, etc. are rusted, or dust adheres to the rod 118, making it impossible to adjust it. In addition, it is natural that a cover as shown by a chain line can be provided in the openings of the covers 143 and 161.

[0072]

As described above, according to the present invention, the spherical sliding contact surface of the spherical washer is brought into sliding contact with the concave spherical inner surface of the fixed-side receiving member having a hemispherical hollow bag shape . Through the fixed-side receiving body and the spherical washer and locked by a locking mechanism on the spherical-side washer side, and the spherical washer and the locking mechanism are at least the fixed-side receiving body. The spherical sliding contact surface of the spherical washer is brought into sliding contact with the fixed-side supporting portion accommodated in the accommodating portion, and the concave spherical inner surface of the movable-side receiving member having a hemispherical hollow bag shape, and the movable-side end of the tension member is moved. The spherical washer is penetrated through the movable washer and the spherical washer and is held on the spherical washer by a tension applying mechanism, and the spherical washer and the tension applying mechanism are housed in a housing portion formed by at least the movable side washer. When the tension member is to be tensioned, the movable side support portion is provided. The side support portion, it becomes possible to perform draws tendon by operating the tensioning imparting mechanism.

In the fixed-side support portion, the spherical washer and the locking mechanism are accommodated at least in an accommodation portion formed by the fixed-side receiving body. In the movable-side support portion, the spherical surface washer is provided. Since the washer and the tension applying mechanism are housed at least in a housing part formed by the movable-side receiving body, the spherical washer or the like becomes rusted, or dust or the like adheres, and cannot be adjusted. The problem of hindrance to the angle follow-up due to the tensioning work and the centripetal action of the present invention is prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a building structure having a tendon end support structure according to a first embodiment of the present invention.

FIG. 2 (1) is a cross-sectional view of the building structure with a part thereof omitted. (2) is an explanatory view of another attachment portion of the movable-side support portion in the tension member end support structure according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of a fixed-side support portion in the tension member end support structure according to the first embodiment of the present invention.

FIG. 4 is a front view of a spherical washer in the tension member end support structure.

FIG. 5 is a cross-sectional view of a movable-side support portion in the tension member end support structure.

FIG. 6 is an explanatory view showing a state in which a pull rod is connected to the movable-side support portion to apply tension of a tension member.

FIG. 7 is an exploded perspective view of the same.

FIG. 8 is a cross-sectional view of a fixed-side support portion in a tension member end support structure according to a second embodiment of the present invention.

FIG. 9 is a cross-sectional view of a movable-side support portion in the tension member end support structure.

FIG. 10 is a partially omitted cross-sectional view of a building structure provided with a tendon end support structure according to the present invention.

FIG. 11 is a partially omitted plan view of a building structure provided with a tendon end support structure according to a third embodiment of the present invention.

FIG. 12 (1) is a cross-sectional view of the building structure with a part thereof omitted. (2) is an arrow view from the S direction of (1).

FIG. 13 is a cross-sectional view of a movable-side support portion of a tendon end support structure according to a third embodiment of the present invention.

FIG. 14 is a front view of a building structure provided with a tendon end support structure according to a fourth embodiment of the present invention.

FIG. 15 is a cross-sectional view of an upper fixed-side support portion of the tension member end support structure.

FIG. 16 is a perspective view of the fixed-side support part with a part thereof omitted.

FIG. 17 is a cross-sectional view of a movable-side support portion in a tension member end support structure according to a fourth embodiment of the present invention.

FIG. 18 is a sectional view taken along the line T-T in FIG. 17;

FIG. 19 is a cross-sectional view of a lower fixed-side support portion in a tendon end support structure according to a fourth embodiment of the present invention.

FIG. 20 is a sectional view taken along the line U-U of FIG. 19;

[Explanation of symbols]

 Reference Signs List 4 fixed side support 5 movable side support 6 wire (tensile member) 7 fixed side seat 7a concave spherical inner surface 8 spherical washer 8a spherical sliding contact surface 25 cover 30 movable side receiver 30a concave spherical inner surface 31 spherical washer 31a Spherical sliding surface 40 Cover B Locking mechanism C Tension applying mechanism

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Onosato 1-5-17 Moto-Akasaka, Minato-ku, Tokyo Stock Company Hirata Matsuda Co., Ltd. (72) Toshiyuki Kawazoe 6-2-10 Ginza, Ginza, Chuo-ku, Tokyo Tomoe Corporation (72) Inventor Yoshitaka Niho 6-2-10 Ginza, Chuo-ku, Tokyo Tomoe Corporation (72) Inventor Masatoshi Kakinaga 6-2-10 Ginza, Chuo-ku, Tokyo Tomoe Corporation ( 56) References JP-A-60-98047 (JP, A) JP-A-2-99125 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04C 5/12 E04B 1/34 E04B 7/14 E04G 21/12

Claims (2)

(57) [Claims] 1. A spherical sliding contact surface of a spherical washer is brought into sliding contact with a concave spherical inner surface of a fixed-side receiving body having a hemispherical hollow bag shape, and a fixed-side end of a tension member is fixed to the fixed-side receiving body and the fixed-side receiving body. by penetrating the spherical washer engaged by the locking mechanism to the spherical washer side, the spherical washer, a fixed-side support portion and a locking mechanism housed in at least receptacle to the stationary seat body forms, hemispherical hollow
The spherical sliding surface of the spherical washer is brought into sliding contact with the inner surface of the concave spherical surface of the bag-shaped movable-side receiving body, and the movable-side end of the tension member penetrates through the movable-side receiving body and the spherical washer. A tension member which is held on a washer side by a tension applying mechanism, and includes a spherical support washer, and a movable side support portion which accommodates the tension imparting mechanism at least in an accommodation portion formed by the movable side receiving body. End support structure. 2. A receiving portion on the fixed-side support portion side is detachably provided on the fixed-side receiving member and an end of the fixed-side receiving member.
A hemispherical bag-shaped cover, wherein the accommodating portion on the movable-side support portion side is the movable-side seat, and a hemispherical bag-shaped cover detachably provided at an end of the movable-side seat. 2. The tension member end support structure according to claim 1, further comprising: