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Timestamp: 2019-08-17 12:47:55
Document Index: 566630639

Matched Legal Cases: ['art.\n5', 'art.\n12', 'art.\n13', 'art 12', 'art 12', 'art 12', 'art 11', 'art 12', 'art 11', 'art 12', 'arts 11', 'arts 11', 'art 11', 'art 12', 'art 12', 'art 11', 'art 12', 'art 12', 'art 12', 'art 12', 'art 11', 'art 11', 'arts 11', 'arts 13', 'arts 13', 'arts 13', 'arts 13', 'art 24', 'art 24', 'art 28', 'art 24']

Shearing force reinforced structure and member - Taisei Corporation
United States Patent Application 20070175127
Tanaka, Yoshihiro (Tokyo, JP)
10/588499
Taisei Corporation (Tokyo, JP)
Download PDF 20070175127 PDF help
20080172977 Modular track system for exterior decorative trim July, 2008 Miller
1. A shearing force reinforced structure comprising: an existing reinforced concrete structure object; a shearing force reinforced member mainly made of a wire rod, the wire rod being arranged inside a reinforced member insertion hole formed at the reinforced concrete structure object; and a filler filled in the reinforced member insertion hole, wherein the reinforced member insertion hole comprises a general part having an inner diameter larger than a diameter of the wire rod; and a base end width broadening part formed at a base end of the reinforced member insertion hole and having an inner diameter larger than the general part.
5. The shearing force reinforced structure according to claim 1, wherein an adhesion strength of the filler is not less than 60 N/mm2 in a case that the wire rod is a deformed reinforcing bar.
6. The shearing force reinforced structure according to claim 1, wherein the filler is a fiber reinforced cementitious composite material where a fiber is mixed in a cementitious matrix.
7. The shearing force reinforced structure according to claim 6, wherein the fiber reinforced cementitious composite material is formed by: blending a fiber, of which a diameter is 0.05 to 0.3 mm and a length is 8 to 16 mm, by around 1 to 4% for a volume of a cementitious matrix obtained by mixing cement, an aggregate of which a maximum particle diameter is not more than 2.5 mm; a pozzolan reaction particle of which a diameter is 0.01 to 15 mm; and at least one kind of super plasticizer; and water.
8. The shearing force reinforced structure according to claim 1, wherein a fiber sheet is adhered to a surface of the reinforced concrete structure object; and the fiber sheet and the shearing force reinforced member are integrated.
9. The shearing force reinforced structure according to claim 3, wherein a fiber sheet is adhered to a surface of the reinforced concrete structure object and that of the base end fixation member, and the fiber sheet and the shearing force reinforced member are integrated.
10. A shearing force reinforced structure comprising: an existing reinforced concrete structure object; a first shearing force reinforced member arranged inside a first reinforced member insertion hole and a second shearing force reinforced member arranged inside a second reinforced member insertion hole formed in the reinforced concrete structure object; and a filler filled in the first reinforced member insertion hole and the second reinforced member insertion hole, wherein the first shearing force reinforced member comprises a first wire rod, and a first base end fixation member formed at a base end of the first wire rod and having a width larger than a diameter of the first wire rod.
11. The shearing force reinforced structure according to claim 10, wherein the first reinforced member insertion hole comprises a first general part having an inner diameter larger than a diameter of the first wire rod, and a first base end width broadening part formed at a base end of the first reinforced member insertion hole and having an inner diameter larger than the first general part.
12. The shearing force reinforced structure according to claim 11, wherein at a top end of the first reinforced member insertion hole is formed a first top end width broadening part having an inner diameter larger than the first general part.
13. The shearing force reinforced structure according to claim 10, wherein the second shearing force reinforced member comprises a second wire rod, and a second base end fixation member formed at a base end of the second wire rod and having a width larger than a diameter of the second wire rod, and wherein the first base end fixation member has a width larger than that of the second base end fixation member.
14. The shearing force reinforced structure according to claim 13, wherein at a top end of the first shearing force reinforced member is formed a first top end fixation member having a width larger than a diameter of the first wire rod.
15. The shearing force reinforced structure according to claim 13, wherein at top ends of the first shearing force reinforced member and the second shearing force reinforced member are respectively formed a first top end fixation member having a width larger than a diameter of the first wire rod and a second top end fixation member having a width larger than a diameter of the second wire rod.
16. The shearing force reinforced structure according to claim 10, wherein the reinforced concrete structure object comprises a rahmen structure, and the first reinforced member insertion hole is formed at a corner of the reinforced concrete structure object.
17. The shearing force reinforced structure according to claim 10, wherein in the first base end fixation member, at a base end of the first wire rod is fixed a plate member configured with a width not less than five folds and not more than 20 folds, preferably not less than ten folds and not more than 15 folds of a diameter of the first wire rod.
18. The shearing force reinforced structure according to claim 10, wherein a fiber sheet is adhered to an inner face of the reinforced concrete structure object, and the fiber sheet is integrated with the first wire rod.
19. The shearing force reinforced structure according to claim 10, wherein a fiber sheet is adhered to an inner face of the reinforced concrete structure object, and the fiber sheet is adhered to a surface of the reinforced concrete structure object and that of the first base end fixation member of the first wire rod and is integrated.
20. A shearing force reinforced member arranged inside a reinforced member insertion hole formed in an existing reinforced concrete structure object, the member comprising: a wire rod having a length shorter than a total length of the reinforced member insertion hole; and a base end fixation member and a top end fixation member respectively having width sizes larger than a diameter of the wire rod and respectively fixed at a base end and top end of the wire rod
22. The shearing force reinforced member according to claim 20, wherein at a top end of the wire rod a male thread member is integrally formed, and wherein the top end fixation member is configured with a steel plate of which a shape is a circle or a polygon, a thickness size is 80% to 120% of a diameter of the wire rod, and a width size is 200% to 300% of the diameter of the wire rod; a female thread is formed in the steel plate; and by screwing the male thread member of the wire rod into the female thread, the top end fixation member is fixed at the top end of the wire rod.
23. The shearing force reinforced member according to claim 20, wherein at a top end of the wire rod is processed a male thread, and wherein the top end fixation member is configured with a steel plate of which a shape is a circle or a polygon, a thickness size is 80% to 120% of a diameter of the wire rod, and a width size is 200% to 300% of the diameter of the wire rod; a female thread is formed in the steel plate; and by screwing the male thread of the wire rod into the female thread, the top end fixation member is fixed at the top end of the wire rod.
24. The shearing force reinforced member according to claim 20, wherein the wire rod is configured with a thread reinforcing bar, and wherein the top end fixation member is configured with a steel plate of which a shape is a circle or a polygon, a thickness size is 80% to 120% of a diameter of the wire rod, and a width size is 200% to 300% of the diameter of the wire rod; a female thread is formed in the steel plate; and by screwing the wire rod into the female thread, the top end fixation member is fixed at a top end of the wire rod.
In other words, in accordance with the shearing force reinforced structure of the present invention, when an RC structure object receives a horizontal force due to such a great earthquake, it is enabled to make damage small due to a deformation amount of ground by enlarging a deformation capacity of a plastic hinge occuring near a corner. Therefore, a put-on load cannot be supported at the same time of a shearing failure, and a whole of an RC structure object can be prevented from being failed.
FIGS. 20 and 20B are graphs both showing results of pulling-out tests between a shearing force reinforcing bar having a plate head and a shearing force reinforcing bar where a semicircular hook is formed at an end.
Meanwhile, the ring head 22 is not limited to the above, and a width size thereof may be formed into 120% to 250% of the shearing force reinforcing bar 21 by a proper method as needed. For example, as a ring head 22b shown in FIG. 4B, according to either method of using a thread reinforcing bar as the shearing force reinforcing bar 21, screwing a locknut at the top end, and making a double nut in order to remove a jounce between the reinforcing bar 21 and the locknut, or injecting a filler such as an epoxy resin in a gap inside a nut, it is also enabled to manufacture a head 22b so that its thickness becomes 150% to 250% of the diameter of the shearing force reinforcing bar 21; and its length, 100% to 250% of the reinforcing bar 21.
In addition, as a ring head 22c shown in FIG. 4C, performing at the top end the shearing force reinforcing bar 21 a friction-pressure joining A of a circular steel plate of which a thickness is 30% to 80% of the diameter of the reinforcing bar 21, and a width is 140% to 200% of the diameter of the reinforcing bar 21, the head 22c may also be manufactured. In addition, as ring heads 22d and 22e shown in FIGS. 4D and 4E, they may also be respectively manufactured from a polygonal steel plate of which a thickness is 30% to 80% of the diameter of the shearing force reinforcing bar 21, and a width is 140% to 200% of the diameter of the reinforcing bar 21, and an elliptical steel plate (including an oval shape and such a shape where side parts of a circle is cut off) of which a thickness is 30% to 80% of the diameter of the reinforcing bar 21, and a long axis is 140% to 200% of the diameter of the reinforcing bar 21. Thus because a gap is formed between the reinforced member insertion hole 10 and the ring heads 22d and 22e, it is enabled to reduce an insertion resistance due to the filler 30 filled in the hole 10, and to insert the shearing force reinforced member 20 without air remaining in rearward of the ring heads 22d and 22e.
In addition, providing any one of the circular steel plate, the polygonal steel plate, and the elliptical steel plate with holes h, a ring head 22f may also be configured to reduce an insertion resistance due to the filler 30 and to insert the shearing force reinforced member 20 without air remaining in rearward of the ring head 22f (see FIG. 4F). Furthermore, as shown in FIG. 4G, a ring head 22g may also be configured to reduce an insertion resistance by making a joined face with the shearing force reinforcing bar 21 of the ring head 22g and an opposite side face thereof a convex spherical shape.
As shown in FIG. 10A, after drilling the reinforced member insertion hole 10 is completed, the filler 30 composed of a cement mortar having a plasticity is filled in the general part 12 by the press fit machine M. Here, at a right end of the general part 12 of the reinforced member insertion hole 10 is placed a stopper 30a made of wood or plastic, and thereby the filler 30 is prevented from flowing out.
Inserting the shearing force reinforcing bar 41 in the reinforced member insertion hole 10 is performed by inserting the reinforcing bar 41, where the base end plate head 43 is fixed at the base end thereof, from a left opening, where the stopper 30a of the hole is not placed, till the top end abuts with the stopper 30a. At this time, because the reinforced member insertion hole 10 is formed with anticipating a margin in a reinforcing bar diameter of the shearing force reinforcing bar 41, the reinforcing bar 41 can be inserted even if the filler 30 is filled in the general part 12 of the hole 10. Meanwhile, in inserting the shearing force reinforcing bar 41 in the reinforced member insertion hole 10 is also available a configuration of lessening an insertion resistance of the filler 30 by attaching a cap made of a bullet-like rubber or plastic to the base end of the reinforcing bar 41.
Here, the shearing force reinforcing bar 41 related to the third embodiment is, as shown in FIG. 11A, configured with a deformed reinforcing bar, and at the base end (left end in FIG. 11A) is fixed the base end plate head 43 by the friction pressure joining A. In addition, at the top end (right end in FIG. 11A), by the friction pressure joining A is fixed a male thread member 41a for joining the top end plate head 42 described later. Here, although a deformed reinforcing bar is assumed to be used as the shearing force reinforcing bar (wire rod) 41, the wire rod 41 is not limited to the deformed reinforcing bar; anything such as a thread reinforcing bar, a steel bar, and a PC tendon, and a carbon rod may be used if it brings out a function as a wire form reinforced material.
As shown in FIGS. 10C and 10D, the process arranges the shearing force reinforced member 40 inside the intermediate wall W′ by inserting the top end plate head 42, of which a section shape is larger than the shearing force reinforcing bar 41, from the right of the reinforced member insertion hole 10; fixing the top end of the reinforcing bar 41 inserted in the hole 10 in the shearing force reinforcing bar insertion process; and then filling the filler 30 in spaces 11a inside the width broadening part 11.
The top end plate head 42 is inserted, upon removing the stopper 30a placed at the right part of the general part 12 of the reinforced member insertion hole 10, from the right of the reinforced member insertion hole 10 so that a female thread 42a described later of the head 42 is arranged at an end face (bottom face of the width broadening part 11) of the general part 12. Then screwing the top end of the shearing force reinforcing bar 41 in the female thread 42a, and thereby fixing the shearing force reinforcing bar 41 and the top end plate head 42, the shearing force reinforced member 40 is formed inside the intermediate wall W′.
Then the spaces 11a made at the width broadening parts 11 of the right of the top end plate head 42 and that of the left of the base end plate head 43 are filled by grinding in the fillers 30 composed of a cement mortar, using a trowel. If the filing is completed, frames 46 are respectively placed at surfaces of the intermediate wall W′ to close the width broadening parts 11 not for the fillers 30 to be deformed due to a fluidity thereof. Meanwhile, the frames 46 are removed after the fillers 30 are hardened. In this case, if the reinforced member insertion hole 10 is lateral as in the third embodiment, the frames 46 are not requested to be placed because the fillers 30 are not deformed in some case. In addition, if the reinforced member insertion hole 10 is longitudinal or slant, the frame 46 may be placed only at a lower width broadening part 11. Meanwhile, a material, shape, and placement method of each of the frames 46 are sufficient if they can suppress the outflow of the filler 30, and are not limited. Because the filler 30 is filled in advance in the reinforced member insertion hole 10, the shearing force reinforced member 40 is inserted, the filler 30 is hardened, thereby the member 40 is fixed inside the hole 10 without a gap, and thus an integration with the intermediate wall W′ is enabled.
Here, in the top end plate head 42 related to the third embodiment, as shown in FIG. 11A, is formed the female thread 42a at center of a rectangular steel plate of which a thickness size is 80% to 120% of the reinforcing bar diameter of the shearing force reinforcing bar 41 and a width size is 200% to 300% the reinforcing bar diameter of the reinforcing bar 41, and it is enabled to screw the male thread 41a in the female thread 42a. Meanwhile, the shape of the top end plate head 42 is not limited to a rectangle; other polygons, a circle, and an ellipse (including an oval shape and such a shape where side parts of a circle is cut off) are also available. In addition, the shape of the joining part between the top end plate head 42 and the shearing force reinforcing bar 41 is not also limited; as a top end plate head 42′ shown in 11C, a configuration is also available that fixes a cylindrical member 42a′ where a female thread is formed on an inner face, matching the top end shape of the reinforcing bar 41. In this case a nut can be used as the cylindrical member 42a′.
In addition, although the shearing force reinforcing bar 41 is assumed to be made by joining the male member 41a at the top end of a deformed reinforcing bar by the friction pressure joining A, it is not limited thereto; for example, as shown in FIG. 11B, a shearing force reinforcing bar 41′ may also be used where the male member 41a is processed at the top end of a deformed reinforcing bar; and as shown in FIG. 11C, as a shearing force reinforcing bar 41″ may also be used a thread reinforcing bar.
In addition, in the filler filling process a configuration is also available that arranges the top end plate head 42 instead of the stopper 30a at the right end of the general part 12, makes a sealant intervene around the head 42, thereby shields the right end of the general part 12, and then fills the filler 30. Thus in the shearing force reinforcing bar insertion process, by inserting the shearing force reinforcing bar 41 in the reinforced member insertion hole 10, and fixing the top end of the reinforcing bar 41 to the top end plate head 42, it is enabled to arrange the shearing force reinforced member 40 inside the intermediate wall W′.
Here, at the base end plate head 43 is formed an air releasing hole 43a in advance for filling the filler 30 described later. Meanwhile, because other configurations of the shearing force reinforcing bar 41 and the base end plate head 43 are similar to those shown in the third embodiment, detailed explanations thereof will be omitted.
The top end plate head 42 is inserted from the right of the reinforced member insertion hole 10 so that the female thread 42a of the head 42 is arranged at a right end (bottom face of the width broadening part 11) of the general part 12 of the hole 10. Then screwing the top end of the shearing force reinforcing bar 41 in the female thread 42a, and thereby fixing the shearing force reinforcing bar 41 and the top end plate head 42, the shearing force reinforced member 40 is formed inside the intermediate wall W′. Then making sealants 44 intervene around the top end plate head 42 and the base end plate head 43, the fillers 30 are prevented from leaking in the filler filling process described later when they are filled.
Here, at the top end plate head 42 related to the fourth embodiment is in advance formed a filling hole 42b in filling the filler 30 described later. In addition, because other configurations of the top end plate head 42 are similar to those of the third embodiment, detailed explanations thereof will be omitted.
Firstly, as shown in FIG. 14C, inserting a filling tube 31 composed of such a vinyl tube in the filling hole 42b of the top end plate head 42, the tube 31 is penetrated to the general part 12 of the reinforced member insertion hole 10. In addition, in the air release hole 43a of the base end plate head 43 an air release tube 32 composed of such a vinyl tube is penetrated to the general part 12 of the reinforced member insertion hole 10.
If filling the filler 30 in the general part 12 is completed, the space 11a made at the right width broadening part 11 of the top end plate head 42 and that made at the left width broadening part 11 of the base end plate head 43 are filled by grinding in the fillers 30 composed of a cement mortar, using a trowel. Meanwhile, the filling method of the filler 30 in the space 11a is similar to that shown in the third embodiment, a detailed explanation thereof will be omitted.
As shown in FIGS. 15C and 15 D, the process arranges the shearing force reinforced member 40 inside the intermediate wall W′ by inserting the top end plate head 42, of which a section shape is larger than the shearing force reinforcing bar41, from the right of the reinforced member insertion hole 10, fixing the top end of the reinforcing bar 41 inserted in the hole 10 in the shearing force reinforcing barinsertion process, and then filling the filler 30 in the spaces 11a inside the width broadening parts 11.
The shearing force reinforced member 20 comprises, as shown in FIGS. 16A and 18, the shearing force reinforcing bar21 configured with a deformed reinforcing bar; and the top end protrusion 22 and the plate head 23 that are respectively provided at the top end and base end of the reinforcing bar 21 and of which section shapes are larger than the reinforcing bar 21. Here, although it is assumed to use a deformed reinforcing bar as the shearing force reinforcing bar(wire rod) 21, it is not limited thereto; anything bringing out a function of a linear reinforced material, for example, such as a thread reinforcing bar, a steel bar, a PC tendon, and a carbon rod may also be used.
Comparing the both results, even in a case that the depth of the fillers 30 is same 50 mm, it is shown that an excellent fixation effect can be obtained in the reinforced member insertion hole 10 having the width broadening parts 13, 11, compared to that not having the parts 13, 11. In addition, it is shown in the configuration having the width broadening parts 13, 11 that if making the depth of the filler 30 80 mm, it is enabled to obtain a fixation effect approximately similar to that of the depth of 150 mm of the comparison example, and the fixation effect of the reinforced member insertion hole 10 having the width broadening parts 13, 11 is larger. Accordingly, it is demonstrated that providing ends of a reinforced member insertion hole with broadening parts, a shearing force reinforced member and the width broadening parts are integrated and resist a tensile force; because even if a wall thickness is thin, an excellent fixation effect can be obtained, an out-of-plane shear force capacity of a face material or slab material preferably increases, and a toughness performance preferably increases thanks to an compression stress occuring in an internal concrete.
As shown in FIG. 22, the first shearing force reinforced member 20′ comprises a first shearing force reinforcing bar(first wire rod) 21′ composed of a deformed reinforcing bar; a protrusion part 24 that is formed at a top end of the reinforcing bar 21′ and of which a section shape is larger than the reinforcing bar 21′; and the plate head 23 (first fixation member) that is formed at a base end of the reinforcing bar 21′ and of which a section shape is larger than the protrusion part 24. Then a total length of the shearing force reinforced member 20′ is shorter than a depth of the first reinforced member insertion hole 10′ and is completely embedded in a state of being arranged in the hole 10′ (see FIG. 21A or 22A).
As shown in FIGS. 22A and 22B, the plate head 23 is composed of a rectangular steel plate of which a thickness is 40% to 80% of a reinforcing bar diameter of the first shearing force reinforcing bar21′ and a width is around ten to 15 folds of the reinforcing bar 21′, and is integrally fixed to the base end of the reinforcing bar 21′. The fixation of the plate head 23 to the shearing force reinforcing bar20′ can be simply performed by using a friction pressure joining machine; pushing the rotated steel plate to the fixed reinforcing bar 21′, thereby generating friction heat in the rotating steel plate at a predetermined pressure, and joining the steel plate to the reinforcing bar 21′ with a melt-adhesion (friction pressure joining A).
As shown in FIGS. 23A and 23B, the second shearing force reinforced member 25 comprises a second shearing force reinforcing bar(second wire rod) 26 composed of a deformed reinforcing bar; a protrusion part (second base end fixation member) 27 that is formed at a base end of the reinforcing bar 26 and of which a section shape is larger than the reinforcing bar 26; and a protrusion part 28 that is similarly formed at a base end of the reinforcing bar 26 and of which a section shape is larger than the reinforcing bar 26. Then a total length of the shearing force reinforced member 25 is shorter than a depth of the second reinforced member insertion hole 15 and is completely embedded in a state of being arranged inside the hole 15 (see FIG. 21 or 23A).
In addition, the protrusion part 24 formed at the top end of the first shearing force reinforced member 20′ is not limited to the above, and may also be formed into a predetermined shape (the width is 120% to 130% of the diameter of he shearing force reinforcing bar21′) according to a method similar to that of the variation example of the ring head 22 of the first embodiment shown in FIG. 4 as needed.
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