JP4858843B2 - Reinforcement structure for tower structure foundation and method for reinforcement of tower structure foundation - Google Patents

Description

  The present invention relates to a reinforcing structure for a tower-like structure foundation and a reinforcing method for the tower-like structure foundation.

  Conventionally, for example, in a tower structure such as a chimney, it may be necessary to reinforce the foundation of the tower structure in response to a change in conditions such as design wind speed and seismic force. An example of such reinforcement is that a high-strength fiber sheet is affixed to the bottom joint of the tower-like structure up to the base joint, and a presser plate that extends in the vertical direction and an anchor that extends in the horizontal direction from the outer surface of the plate. Attaching the presser plate of a fixing tool having a reinforcing bar to the outer surface of a tower-like structure to which a high-strength fiber sheet is attached, placing the anchor reinforcing bar of the fixing tool on the reinforcing bar of the reinforcing foundation, and placing concrete (For example, refer to Patent Document 1).

JP-A-5-171620

  However, in the reinforcement example as described above, since the reinforcement foundation is very large including the original foundation, a large amount of concrete must be placed in order to form the reinforcement foundation. In addition, a space for placing such a large amount of concrete must be formed, which may be complicated.

  By the way, in some cases, a plurality of support anchor members are already embedded along the outer circumferential direction of the tower-like structure in the pedestal portion that forms the foundation of the tower-like structure. In such a case, it is known that the foundation of the tower structure can be reinforced by increasing the pulling resistance of the support anchor member. For this reason, it is conceivable to increase the pull-out resistance force by directly pressing the upper end (head) of the support anchor member with a plate member or the like, but this may damage the support anchor member.

  In view of the above-described circumstances, the present invention provides a tower-like structure foundation reinforcing structure and a tower-like structure that can easily reinforce the foundation of the tower-like structure without fear of damaging the support anchor member. It aims at providing the reinforcement method of a structure foundation.

  In order to achieve the above object, a tower-like structure foundation reinforcing structure according to claim 1 of the present invention is a structure for reinforcing a tower-like structure foundation, wherein the tower-like structure foundation is In the pedestal portion that constitutes, the tower-like structure centered on the central axis of the tower-like structure in the outer region of the plurality of elongated support anchor members embedded along the outer peripheral direction of the tower-like structure A reinforcing anchor member disposed along an outer peripheral direction of the object, and a pressing member attached to an upper end portion of the reinforcing anchor member and fixedly disposed on an upper surface of the pedestal portion, the pressing member supporting the support A mode in which at least a part of a fracture region defined by a line of intersection between a conical surface forming an angle of 45 ° with respect to the longitudinal direction of the support anchor member and an upper surface of the pedestal portion is covered with the lower end portion of the anchor member as a top portion. It is arranged.

  The tower-like structure reinforcing structure according to claim 2 of the present invention is a structure for reinforcing the foundation of the tower-like structure, and the tower in the pedestal part constituting the foundation of the tower-like structure. In the outer region of the support anchor member embedded in a manner protruding radially outward from the lower end portion of the columnar structure, along the outer peripheral direction of the tower-shaped structure with the central axis of the tower-shaped structure as the center A reinforcing anchor member disposed; and a pressing member attached to an upper end portion of the reinforcing anchor member and fixedly disposed on an upper surface of the pedestal portion, wherein the pressing member includes a protruding end portion of the supporting anchor member. As a reference, a curved surface formed by collecting straight lines forming an angle of 45 ° outward with respect to the extending direction of the tower structure along the outer peripheral direction of the tower structure, and the upper surface of the pedestal portion Covers at least part of the destruction area defined by the line of intersection with Characterized in that it is disposed in a modal.

  The tower-like structure reinforcing structure according to claim 3 of the present invention is the above-described structure according to claim 1 or 2, wherein the pedestal portion is formed by placing concrete in an outer region of the support anchor member. It has the formed extension part, The restraint member is arrange | positioned in this extension part, It is characterized by the above-mentioned.

  Moreover, the reinforcement structure of the tower-like structure which concerns on Claim 4 of this invention is the base restraint member arrange | positioned in the aspect surrounding the outer surface of the said base part in any one of Claims 1-3 mentioned above. It is provided with.

  The tower-like structure reinforcing structure according to claim 5 of the present invention is the tower structure according to any one of claims 1 to 4, wherein the pressing member has an annular shape, and the upper end portion of the reinforcing anchor member. And fixedly arranged on the upper surface of the pedestal portion.

  A tower-like structure reinforcing method according to claim 6 of the present invention is a method for reinforcing a foundation of the tower-like structure, wherein the tower is formed in a pedestal part constituting the foundation of the tower-like structure. In the outer region of the plurality of elongated support anchor members embedded along the outer circumferential direction of the tower-like structure, along the outer circumference direction of the tower-like structure with the central axis of the tower-like structure as the center A reinforcing anchor disposing step of disposing a reinforcing anchor member; a conical surface forming an angle of 45 ° with respect to a longitudinal direction of the supporting anchor member with a lower end portion of the supporting anchor member as a top portion; and an upper surface of the pedestal portion Including a pressing member arranging step of fixing and arranging the pressing member on the upper surface of the pedestal portion in a state of covering at least a part of the fracture area defined by the intersection line and penetrating the upper end portion of the reinforcing anchor member. It is characterized by.

  According to the reinforcing structure for a tower-like structure foundation of the present invention, a plurality of elongated support anchor members embedded along the outer peripheral direction of the tower-like structure in a pedestal part constituting the foundation of the tower-like structure. A reinforcing anchor member is disposed in the outer area along the outer peripheral direction of the tower-like structure around the central axis of the tower-like structure, and is attached to the upper end of the reinforcing anchor member to Destruction defined by a line of intersection between a conical surface and a top surface of a pedestal portion, the pressing member fixedly disposed on the upper surface having an angle of 45 ° with respect to the longitudinal direction of the supporting anchor member with the lower end portion of the supporting anchor member as a top portion Since it is arranged in such a manner as to cover at least a part of the region, the support anchor member can be reinforced by improving the pulling resistance force, and the support anchor member itself is not subjected to any processing, so the support anchor Material is broken There is no cause to fear. Further, since the reinforcing anchor member is disposed outside the support anchor member, and the pressing member is fixedly disposed on the upper surface of the pedestal portion through the reinforcing anchor member, it is large for placing concrete as before. There is no need to form a space or the like, and it can be performed by a simple process. Therefore, there is no possibility of damaging the support anchor member, and there is an effect that the foundation of the tower structure can be easily reinforced.

  Moreover, according to the reinforcement structure of the tower-like structure foundation of the present invention, the support anchor embedded in a manner projecting radially outward from the lower end of the tower-like structure in the pedestal part constituting the foundation of the tower-like structure. A reinforcing anchor member is disposed in the outer region of the member along the outer peripheral direction of the tower-like structure around the central axis of the tower-like structure, and is attached to the upper end portion of the reinforcing anchor member. A straight line that forms an angle of 45 ° outward with respect to the extending direction of the tower-like structure, with the pressing member fixedly arranged on the upper surface of the section as a reference with respect to the protruding end of the support anchor member, is the outer periphery of the tower-like structure. Since it is arranged in such a manner as to cover at least a part of the fracture area defined by the intersecting line between the curved surface formed by gathering along the direction and the upper surface of the pedestal portion, the pulling resistance force of the tower-like structure Can be reinforced with improved support anchors Since not subjected to any processing in member itself, there is no fear that the support anchor member being damaged. Further, since the reinforcing anchor member is disposed outside the support anchor member, and the pressing member is fixedly disposed on the upper surface of the pedestal portion through the reinforcing anchor member, it is large for placing concrete as before. There is no need to form a space or the like, and it can be performed by a simple process. Therefore, there is no possibility of damaging the support anchor member, and there is an effect that the foundation of the tower structure can be easily reinforced.

  In addition, according to the tower-like structure foundation reinforcing method of the present invention, a plurality of long support anchors embedded along the outer circumferential direction of the tower-like structure in the pedestal part constituting the foundation of the tower-like structure. A reinforcing anchor disposing step of disposing a reinforcing anchor member along an outer peripheral direction of the tower-like structure around the central axis of the tower-like structure, and a lower end portion of the support anchor member; An upper end portion of the reinforcing anchor member in a manner covering at least a part of a fracture area defined by a line of intersection between a conical surface forming an angle of 45 ° with respect to the longitudinal direction of the support anchor member and an upper surface of the pedestal portion as a top portion And a pressing member arrangement step of fixing and arranging the pressing member on the upper surface of the pedestal portion so as to improve the pulling resistance force of the support anchor member and to reinforce the support anchor member itself. Apply some processing Since only a no, no fear that the support anchor member being damaged. Further, since the reinforcing anchor member is disposed outside the support anchor member, and the pressing member is fixedly disposed on the upper surface of the pedestal portion through the reinforcing anchor member, it is large for placing concrete as before. There is no need to form a space or the like, and it can be performed by a simple process. Therefore, there is no possibility of damaging the support anchor member, and there is an effect that the foundation of the tower structure can be easily reinforced.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a tower-shaped structure foundation reinforcing structure and a tower-like structure foundation reinforcing method according to the present invention will be described in detail with reference to the accompanying drawings. In the following, for the convenience of explanation, the reinforcing method for the tower-like structure foundation will be described as appropriate, while the reinforcing structure for the tower-like structure foundation will be described as appropriate.

<Embodiment 1>
1 and 2 schematically show the structure of a tower-like structure according to Embodiment 1 of the present invention. FIG. 1 is a plan view and FIG. 2 is a sectional side view. The tower-like structure 1 illustrated here is, for example, a chimney, and has a form that extends along the vertical direction and gradually decreases in outer diameter as it goes upward.

  The foundation of such a tower-like structure 1 is provided in the lower part of the tower-like structure 1, and has the base part 10 which makes a polygonal columnar form. Here, although the polygonal column shape is shown as an example of the form of the pedestal part 10, the form of the pedestal part 10 is not particularly limited in the present invention, and may have a columnar form.

  The pedestal portion 10 has an outer width that is sufficiently larger than the lower portion of the tower structure 1, and a plurality of supports are provided around the tower structure 1 along the outer circumferential direction of the tower structure 1. The anchor member 11 is already embedded.

  Such a support anchor member 11 has a long shape in which the vertical direction is the longitudinal direction, the lower end portion 11a has a bowl shape, the upper end portion 11b penetrates the upper surface of the pedestal portion 10 and the pedestal. The base plate 12 disposed on the upper surface of the portion 10 passes through the base plate 12, is fastened by a nut member 13, and is embedded in the pedestal portion 10. Reference numeral 14 in FIG. 1 is a support anchor reinforcing bar provided inside the foundation, and reference numeral 15 is a bottom plate portion of the foundation. The support anchor member 11 exemplified here has a lower end portion 11a having a bowl shape, but in the present invention, the form of the lower end portion 11a of the support anchor member 11 is not particularly limited. You may attach the plate extended in the direction orthogonal to the longitudinal direction of the support anchor member 11 to the lower end part 11a.

  The tower-like structure 1 as described above has the following basic reinforcing structure 20. The tower-like structure foundation reinforcing structure 20 includes a plurality of reinforcing anchor members 21, a pressing member 22, and a pedestal restraining member 23.

  The plurality of reinforcing anchor members 21 are long steel bars longer than the support anchor member 11. These reinforcing anchor members 21 are respectively embedded in the outer region of the support anchor member 11 in the pedestal portion 10 along the outer peripheral direction of the tower-like structure 1 around the central axis of the tower-like structure 1. is there. More specifically, the lower end portion 21a of the reinforcing anchor member 21 is supported in a mode of entering the bottom plate portion 15, and the upper end portion 21b is embedded in the pedestal portion 10 in a mode of protruding upward from the upper surface of the pedestal portion 10. It is.

  The pressing member 22 is a plate-like body made of a steel plate and having an annular shape. The pressing member 22 has an inner diameter sufficiently larger than the outer diameter of the lower portion of the tower-like structure 1, and more specifically, an arrangement formed by the support anchor members 11 disposed around the tower-like structure 1. Slightly larger than the circle. In such a pressing member 22, a plurality of through holes (not shown) through which the upper end portion 21 b of the reinforcing anchor member 21 passes are formed along the circumferential direction, and the through holes serve as upper ends of the reinforcing anchor member 21. As a result of being penetrated by the portion 21b and the upper end portion 21b being fastened by a nut member (not shown), it is fixedly arranged on the upper surface of the pedestal portion 10. That is, the pressing member 22 is attached to the upper end portion 21 b of the reinforcing anchor member 21 and fixedly disposed on the upper surface of the pedestal portion 10. Note that the pressing member 22 is divided and formed, and the divided members may be gathered to form an annular shape.

  Here, the arrangement location of the pressing member 22 will be described in more detail. As shown in FIG. 3, a part of the pressing member 22, that is, a part on the inner side of the part penetrating the reinforcing anchor member 21 is arranged so as to cover a part of the fracture region A of the support anchor member 11. . The fracture region A is a cone having an angle of 45 ° with respect to the extending direction of the rod portion 11c of the support anchor member 11, that is, the longitudinal direction of the support anchor member 11, with the lower end portion 11a of the support anchor member 11 as a top portion. A region defined by a line of intersection between the surface and the upper surface of the pedestal 10. Such a destruction area A is an area where the support anchor member 11 is withdrawn at the same time as it is withdrawn, that is, is destroyed.

  The pedestal restraining member 23 is, for example, disposed in a manner that surrounds the outer surface of the pedestal portion 10 with a steel plate, or disposed in a manner that surrounds the outer surface of the pedestal portion 10 with PC steel wire. The pedestal restraining member 23 is for restraining the pedestal portion 10 from expanding outward by restraining the outer surface of the pedestal portion 10. As shown in FIG. 1, when the pedestal portion 10 has a polygonal column shape, for example, mortar or concrete is filled between the pedestal portion 10 and the pedestal restraining member 23 in order to increase the restraining force by the pedestal restraining member 23. It is desirable to fill material 24.

  The tower-like structure foundation reinforcement structure 20 having the above-described configuration is obtained as follows. Below, an example of the reinforcement method of a tower-like structure foundation is described.

  First, in a predetermined region of the pedestal 10, that is, an outer region of the existing support anchor member 11, a plurality of anchor holes are formed along the outer peripheral direction of the tower-like structure 1 around the central axis of the tower-like structure 1. (Not shown) is formed by shaving or the like. The anchor hole (not shown) is formed in such a manner that it also advances to the bottom plate portion 15. Then, the reinforcing anchor member 21 is inserted into each anchor hole (not shown), and the lower end portion 21a of the reinforcing anchor member 21 is inserted into the lowermost end portion of the anchor hole (not shown), that is, the bottom plate portion 15. Fix with resin or the like in the approached state (reinforcing anchor placement process). At this time, the upper end portion 21 b of the reinforcing anchor member 21 protrudes from the upper surface of the pedestal portion 10.

  Next, the upper end portion 21b of the reinforcing anchor member 21 is passed through a through hole formed in the annular pressing member 22, and the upper end portion 21b is fastened with a nut member, whereby the pressing member 22 is fixed to the base portion 10. Is fixedly arranged on the upper surface of the plate (pressing member arranging step). In such a case, a part of the pressing member 22 is fixed so as to cover at least a part of the destruction area A.

  After performing such a pressing member arrangement | positioning process, the outer surface of the base part 10 is wound with the base restraint member 23 which consists of steel plates, and the reinforcement structure 20 as mentioned above is obtained. When a gap is generated between the pedestal 10 and the pedestal restraining member 23, the gap 24 is filled with a filler 24 such as mortar or concrete.

  According to the tower-like structure foundation reinforcing structure 20 having the above-described configuration, the reinforcing anchor members 21 are respectively tower-like structures in the outer regions of the plurality of support anchor members 11 embedded in the pedestal portion 10. 1 is arranged along the outer peripheral direction of the tower-like structure 1 around the center axis of the tower 1, and is fixedly arranged on the upper surface of the pedestal portion 10 in a manner penetrating the upper end portion 21b of the reinforcing anchor member 21. The fracture region A defined by the intersecting line of the conical surface and the upper surface of the pedestal portion 10 where the member 22 forms an angle of 45 ° with respect to the longitudinal direction of the support anchor member 11 with the lower end portion 11a of the support anchor member 11 as the top. Since it is arranged so as to cover at least a part of the support anchor member 11, it can be reinforced by improving the pull-out resistance force of the support anchor member 11, and the support anchor member 11 itself is not subjected to any processing. , There is no fear that the support anchor member 11 is damaged. Further, since the reinforcing anchor member 21 is disposed outside the support anchor member 11 and the pressing member 22 is fixedly arranged on the upper surface of the pedestal portion 10 through the reinforcing anchor member 21, the concrete is hit as before. It is not necessary to form a large space or the like for installation, and the process can be performed with a simple process. Therefore, there is no possibility of damaging the support anchor member 11, and the foundation of the tower structure 1 can be easily reinforced.

  According to the reinforcing structure 20 of the tower-like structure foundation, since the pedestal restraining member 23 is arranged in a mode of being wound around the outer surface of the pedestal portion 10, it is possible to suppress the pedestal portion 10 from expanding outward. As a result of being able to improve the restraining force of the pedestal part 10, the strength of the pedestal part 10 can be improved, and the foundation of the tower-like structure 1 can be reinforced also by this.

  Further, according to the tower-like structure foundation reinforcing method in the embodiment of the present invention, the central axis of the tower-like structure 1 is centered in the outer region of the plurality of support anchor members 11 embedded in the pedestal portion 10. A reinforcing anchor disposing step of disposing a plurality of reinforcing anchor members 21 along the outer peripheral direction of the tower-like structure 1 and an upper end portion 21b of the reinforcing anchor member 21 so as to cover at least a part of the fracture region A A pressing member arrangement step of fixing and arranging the pressing member 22 on the upper surface of the pedestal portion 10 in a state where the supporting anchor member 11 is penetrated, the pulling resistance force of the supporting anchor member 11 can be improved and the reinforcement can be performed. Since the member 11 itself is not subjected to any processing, there is no possibility that the support anchor member 11 is damaged. Further, since the reinforcing anchor member 21 is disposed outside the support anchor member 11 and the pressing member 22 is fixedly arranged on the upper surface of the pedestal portion 10 through the reinforcing anchor member 21, the concrete is hit as before. It is not necessary to form a large space or the like for installation, and the process can be performed with a simple process. Therefore, there is no possibility of damaging the support anchor member 11, and the foundation of the tower structure 1 can be easily reinforced.

  The preferred embodiment 1 of the present invention has been described above, but the present invention is not limited to the first embodiment, and various modifications can be made. That is, as shown in FIG. 4, the pressing member 22 a does not have to be an annular plate, and is an individual plate provided corresponding to each of the reinforcing anchor members 21. It doesn't matter. Even in this case, it goes without saying that a part of the pressing member 22a is arranged so as to cover at least a part of the destruction region A. Even with such a configuration, the same effects as those of the first embodiment can be obtained. Further, when the reinforcing anchor member 21 is not provided in the pedestal portion 10, the reinforcing anchor member 21 is disposed in the gap between the pedestal portion 10 and the pedestal restraining member 23 together with the filler 24 such as mortar or concrete. You may do it.

<Embodiment 2>
5 and 6 schematically show the structure of the tower-like structure according to Embodiment 2 of the present invention. FIG. 5 is a plan view and FIG. 6 is a sectional side view. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as the tower-like structure in Embodiment 1 mentioned above. The tower-like structure 1 illustrated here is, for example, a chimney, and has a form that extends along the vertical direction and gradually decreases in outer diameter as it goes upward.

  The foundation of such a tower-like structure 1 is provided in the lower part of the tower-like structure 1, and has the base part 100 which makes a columnar form. The pedestal unit 100 includes a base 101 and an extension unit 102.

  The base 101 has a polygonal shape having an outer width slightly larger than the lower portion of the tower-like structure 1, and the tower-like structure 1 is surrounded by the outer periphery of the tower-like structure 1. A plurality of support anchor members 11 are already embedded. Here, although the polygonal column shape is shown as an example of the form of the base 101, in the present invention, the form of the base 101 is not particularly limited, and may have a cylindrical shape.

  Such a support anchor member 11 has a long shape in which the vertical direction is the longitudinal direction, the lower end portion 11 a has a bowl shape, the upper end portion 11 b penetrates the upper surface of the base portion 101 and the base portion 101. The base plate 12 disposed on the upper surface of the base plate 12 passes through the base plate 12, is fastened by a nut member 13, and is embedded in the base 101. Reference numeral 14 in FIG. 5 is a support anchor reinforcing bar provided inside the foundation, and reference numeral 15 is a bottom plate portion of the foundation. The support anchor member 11 exemplified here has a lower end portion 11a having a bowl shape, but in the present invention, the form of the lower end portion 11a of the support anchor member 11 is not particularly limited. You may attach the plate extended in the direction orthogonal to the longitudinal direction of the support anchor member 11 to the lower end part 11a.

  The extension portion 102 is formed around the base portion 101, and more specifically, is formed so as to surround the base portion 101. The extension portion 102 is formed by surrounding the base portion 101, that is, by placing a reinforcing bar 103 in the outer region of the support anchor member 11 and placing concrete. By forming the additional portion 102, the pedestal portion 100 has a cylindrical shape as described above. The extension part 102 illustrated here is formed by placing a reinforcing bar 103 and placing concrete. However, in the present invention, the extension part 102 is not limited to this, and the extension part 102 is formed on the reinforcing bar 103. Alternatively, it may be formed by placing a PC steel wire and placing concrete. These reinforcing bars 103 and the PC steel wire constitute a restraining member having a function of suppressing the base portion 100 from expanding outward, similarly to a base restraining member 23 described later.

  The tower-like structure 1 as described above has the following basic reinforcing structure 200. The tower-like structure foundation reinforcing structure 200 includes a plurality of reinforcing anchor members 21, a pressing member 22 a, and a pedestal restraining member 23.

  The plurality of reinforcing anchor members 21 are long steel bars longer than the support anchor member 11. These reinforcing anchor members 21 are located in the outer region of the support anchor member 11 in the pedestal portion 100 and in the inner region of the reinforcing bar 103, that is, in the additional portion 102 constituting the pedestal portion 100, respectively. The tower-like structure 1 is embedded along the outer peripheral direction around the axis. More specifically, the lower end portion 21a of the reinforcing anchor member 21 is supported in a state of entering the bottom plate portion 15, and the upper end portion 21b is protruded upward from the upper surface of the base portion 100 (additional portion 102). Embedded in the section 100 (the expansion section 102).

  The pressing member 22 is a plate-like body made of a steel plate and having an annular shape. The pressing member 22 has an inner diameter sufficiently larger than the outer diameter of the lower portion of the tower-like structure 1, and more specifically, an arrangement formed by the support anchor members 11 disposed around the tower-like structure 1. Slightly larger than the circle. In such a pressing member 22, a plurality of through holes (not shown) through which the upper end portion 21 b of the reinforcing anchor member 21 passes are formed along the circumferential direction, and the through holes serve as upper ends of the reinforcing anchor member 21. As a result of passing through the portion 21b and fastening the upper end portion 21b with a nut member (not shown), the upper end portion 21b is fixedly disposed on the upper surface of the pedestal portion 100 (base portion 101 and extension portion 102). Note that the pressing member 22 is divided and formed, and the divided members may be gathered to form an annular shape.

  Here, the arrangement location of the pressing member 22 will be described in more detail. As shown in FIG. 7, a part of the pressing member 22, that is, a part on the inner side of the part penetrating the reinforcing anchor member 21 is arranged so as to cover a part of the fracture region A of the support anchor member 11. . The fracture region A is a cone having an angle of 45 ° with respect to the extending direction of the rod portion 11c of the support anchor member 11, that is, the longitudinal direction of the support anchor member 11, with the lower end portion 11a of the support anchor member 11 as a top portion. A region defined by a line of intersection between the surface and the upper surface of the pedestal unit 100. Such a destruction area A is an area where the support anchor member 11 is withdrawn at the same time as it is withdrawn, that is, is destroyed.

  The pedestal restraining member 23 is made of, for example, a steel plate, and is disposed in such a manner as to surround the outer surface (outer peripheral surface) of the pedestal portion 100, or is disposed in a manner of surrounding the outer surface of the pedestal portion 100 with a PC steel wire. It is a thing. The pedestal restraining member 23 is for restraining the pedestal portion 100 from expanding outward by restraining the outer peripheral surface of the pedestal portion 100.

  The tower-shaped structure foundation reinforcing structure 200 having the above-described configuration is obtained as follows. Below, an example of the reinforcement method of a tower-like structure foundation is described.

  First, in a predetermined region of the bottom slab portion 15, more specifically, in a region where the support anchor member 11 is on the outer side of the place where the support anchor member 11 is disposed, the tower-like structure 1 is centered on the central axis of the tower-like structure 1. A plurality of anchor holes (not shown) are formed by cutting or the like along the outer circumferential direction. Then, the reinforcing anchor member 21 is inserted into each anchor hole and fixed with resin or the like. Thereafter, the reinforcing bars 103 are arranged in the outer peripheral area of the reinforcing anchor member 21 along the outer peripheral direction of the tower-like structure 1, and then the reinforcing bars 103 are rolled up and the concrete is placed to form the extension portion 102. As a result, the reinforcing anchor member 21 is supported in such a manner that the lower end portion 21a enters the bottom plate portion 15, and the upper end portion 21b projects upward from the upper surface of the pedestal portion 100 (additional portion 102). It is embedded in (additional part 102).

  Next, the upper end portion 21b of the reinforcing anchor member 21 is passed through a through-hole formed in the annular pressing member 22, and the upper end portion 21b is fastened with a nut member, whereby the pressing member 22 is fixed to the base portion 100. Fixedly placed on the top surface. In such a case, a part of the pressing member 22 is fixed so as to cover at least a part of the destruction area A. Then, the outer peripheral surface of the base part 100 is wound by the base restraint member 23 which consists of steel plates, and the reinforcement structure 200 as mentioned above is obtained.

  According to the tower-like structure foundation reinforcing structure 200 having the above-described configuration, the pedestal portion 100 is configured by placing concrete in the outer region of the plurality of support anchor members 11, and the reinforcing anchor member 21 is concrete. Are arranged along the outer peripheral direction of the tower-like structure 1 around the central axis of the tower-like structure 1, and the pressing member 22 is the upper end portion 21b of the reinforcing anchor member 21. The conical surface and the pedestal portion 100 are fixedly arranged on the upper surface of the pedestal portion 100 so as to penetrate through the base portion 100 and form a 45 ° angle with respect to the longitudinal direction of the support anchor member 11 with the lower end portion 11a of the support anchor member 11 as the top portion. Since at least a part of the fracture area A defined by the line of intersection with the upper surface of the support anchor member 11 is covered, the pullout resistance force of the support anchor member 11 can be improved, and the support anchor member 11 itself can be reinforced. Since not subjected to any processing, the no fear that the support anchor member 11 is damaged. Further, since the reinforcing anchor member 21 is disposed outside the support anchor member 11 and the pressing member 22 is fixedly disposed on the upper surface of the pedestal portion 100 through the reinforcing anchor member 21, the concrete is hit as before. It is not necessary to form a large space or the like for installation, and the process can be performed with a simple process. Therefore, there is no possibility of damaging the support anchor member 11, and the foundation of the tower structure 1 can be easily reinforced. In particular, in the second embodiment, since the pedestal portion 100 can be configured only by placing concrete in the outer region of the embedded support anchor member 11, the embedded portion of the support anchor member 11 has a sufficient size. Useful if not.

  According to the reinforcing structure 200 for the tower-like structure foundation, since the pedestal restraining member 23 is disposed in such a manner as to surround the outer peripheral surface of the extension portion 102 in the pedestal portion 100, the expansion of the pedestal portion 100 to the outside is suppressed. As a result, the restraining force of the pedestal portion 100 can be improved. As a result, the strength of the pedestal portion 100 can be improved, and the foundation of the tower-like structure 1 can be reinforced.

  The preferred embodiment 2 of the present invention has been described above, but the present invention is not limited to this embodiment 2, and various modifications can be made. That is, as shown in FIG. 8, the pressing member 22a does not have to be a plate-like body having an annular shape, and is an individual plate-like body provided corresponding to each of the reinforcing anchor members 21. It doesn't matter. Even in this case, it goes without saying that a part of the pressing member 22 is arranged so as to cover at least a part of the destruction region A. Even with such a configuration, the same effects as those of the second embodiment can be obtained.

  Moreover, in Embodiment 2 mentioned above, after fixing the reinforcement anchor member 21 with resin etc., the base part 100 was comprised by placing concrete and forming the expansion part 102, However, In this invention, in the base part, After reinforcing bars or PC steel wires are placed along the outer periphery of the tower structure, concrete is cast to form additional parts, and then anchor holes are formed to form reinforcing anchor members. It doesn't matter. Separately, reinforcing bars or PC steel wires are arranged around the base along the outer periphery of the tower-like structure, and base restraint members made of steel plates are arranged endlessly in the outer area. Further, the reinforcing portion may be provided by forming the extension portion by placing concrete using the pedestal restraining member as a frame and then forming an anchor hole.

  Furthermore, in the present invention, the reinforcing bar 103 (or PC steel wire) disposed in the extension portion 102 constitutes a restraining member that suppresses the pedestal portion 100 from expanding toward the outer region. The restraining member 23 may be omitted. Further, the reinforcing anchor member 21 may be disposed on the base 101.

<Embodiment 3>
9 and 10 schematically show the structure of the tower-like structure according to Embodiment 3 of the present invention, FIG. 9 is a plan view, and FIG. 10 is a sectional side view. In addition, the same code | symbol is attached | subjected and demonstrated to what has the same structure as the tower-like structure in Embodiment 1 mentioned above. The tower-like structure 1 ′ exemplified here is in the form of a steel pipe, for example, and has a cylindrical shape extending along the vertical direction.

  The foundation of such a tower-like structure 1 ′ is provided at the lower part of the tower-like structure 1 ′ and has a pedestal portion 10 having a polygonal columnar shape. Here, although the polygonal column shape is shown as an example of the form of the pedestal part 10, the form of the pedestal part 10 is not particularly limited in the present invention, and may have a columnar form.

  The pedestal portion 10 has an outer width that is sufficiently larger than the lower portion of the tower-like structure 1 ′, and the lower end of the tower-like structure 1 ′ is embedded. And the lower end part of tower-like structure 1 'is provided with the hook-shaped support anchor member 110 in the aspect which protrudes in the radial direction on the surrounding surface. Here, the code | symbol 14 in FIG. 1 is a support anchor reinforcement bar provided in the inside of a foundation, and the code | symbol 15 is a bottom slab part of a foundation.

  The tower-like structure 1 ′ as described above has the following basic reinforcing structure 201. The tower-like structure foundation reinforcing structure 201 includes a plurality of reinforcing anchor members 21, a pressing member 22, and a pedestal restraining member 23.

  The plurality of reinforcing anchor members 21 are long steel bars. These reinforcing anchor members 21 are embedded in the outer region of the support anchor member 110 in the pedestal portion 10 along the outer peripheral direction of the tower-like structure 1 ′ with the center axis of the tower-like structure 1 ′ as the center. It is. More specifically, the lower end portion 21a of the reinforcing anchor member 21 is supported in a mode of entering the bottom plate portion 15, and the upper end portion 21b is embedded in the pedestal portion 10 in a mode of protruding upward from the upper surface of the pedestal portion 10. It is.

  The pressing member 22 is a plate-like body made of a steel plate and having an annular shape. The pressing member 22 has an inner diameter that is sufficiently larger than the outer diameter of the lower portion of the tower-like structure 1 ′, and more specifically, is formed by the support anchor member 110 disposed around the tower-like structure 1 ′. It is slightly larger than the arrangement circle. In such a pressing member 22, a plurality of through holes (not shown) through which the upper end portion 21 b of the reinforcing anchor member 21 passes are formed along the circumferential direction, and the through holes serve as upper ends of the reinforcing anchor member 21. As a result of being penetrated by the portion 21b and the upper end portion 21b being fastened by a nut member (not shown), it is fixedly arranged on the upper surface of the pedestal portion 10.

  Here, the arrangement location of the pressing member 22 will be described in more detail. As shown in FIG. 11, a part of the pressing member 22, that is, a part on the inner side of the part penetrating the reinforcing anchor member 21 is arranged so as to cover a part of the fracture region B of the support anchor member 110. . The fracture region B is a straight line having an angle of 45 ° outward with respect to the extending direction (illustrated by a two-dot chain line) of the tower-like structure 1 ′ with reference to the protruding end portion 110a of the support anchor member 110. Refers to a region defined by a line of intersection between the curved surface formed by gathering along the outer peripheral direction of the tower-like structure 1 ′ and the upper surface of the pedestal. Such a destruction area B is an area where the tower-like structure 1 ′ is pulled out at the same time as it is pulled out, that is, is destroyed.

  The pedestal restraining member 23 is made of, for example, a steel plate, and is disposed in a manner surrounding the outer surface of the pedestal portion 10. The pedestal restraining member 23 is for restraining the pedestal portion 10 from expanding outward by restraining the outer surface of the pedestal portion 10. As shown in FIG. 9, when the pedestal portion 10 has a polygonal column shape, for example, mortar or concrete is filled between the pedestal portion 10 and the pedestal restraining member 23 in order to increase the restraining force by the pedestal restraining member 23. It is desirable to fill material 24.

  The tower-like structure foundation reinforcing structure 201 having the above-described configuration is obtained as follows. Below, an example of the reinforcement method of a tower-like structure foundation is described.

  First, a plurality of anchors are arranged in a predetermined area of the pedestal 10, that is, in an outer area of the existing support anchor member 110 along the outer peripheral direction of the tower-like structure 1 ′ with the central axis of the tower-like structure 1 ′ as the center. A working hole (not shown) is formed by shaving or the like. The anchor hole (not shown) is formed in such a manner that it also advances to the bottom plate portion 15. Then, the reinforcing anchor member 21 is inserted into each anchor hole (not shown), and the lower end portion 21a of the reinforcing anchor member 21 is inserted into the lowermost end portion of the anchor hole (not shown), that is, the bottom plate portion 15. Fix with resin etc. in the state of entering. At this time, the upper end portion 21 b of the reinforcing anchor member 21 protrudes from the upper surface of the pedestal portion 10.

  Next, the upper end portion 21b of the reinforcing anchor member 21 is passed through a through hole formed in the annular pressing member 22, and the upper end portion 21b is fastened with a nut member, whereby the pressing member 22 is fixed to the base portion 10. Fixedly placed on the top surface. In such a case, a part of the pressing member 22 is fixed so as to cover at least a part of the destruction region B.

  After performing such a process, the outer side surface of the base part 10 is wound by the base restraint member 23 which consists of a steel plate, and the reinforcement structure 201 as mentioned above is obtained. When a gap is generated between the pedestal 10 and the pedestal restraining member 23, the gap 24 is filled with a filler 24 such as mortar or concrete.

  According to the tower-like structure foundation reinforcing structure 201 having the above-described configuration, the reinforcing anchor members 21 are respectively tower-like structures in the outer regions of the plurality of support anchor members 110 embedded in the pedestal portion 10. It is arranged along the outer peripheral direction of the tower-like structure 1 ′ around the central axis of 1 ′, and is fixedly arranged on the upper surface of the pedestal portion 10 in a manner penetrating the upper end portion 21 b of the reinforcing anchor member 21. The pressed member 22 has a straight line that forms an angle of 45 ° outward with respect to the extending direction of the tower-like structure 1 ′ with respect to the protruding end portion 110 a of the support anchor member 110. Since it arrange | positions in the aspect which covers at least one part of the destruction area B defined by the intersection line of the curved surface formed by gathering along an outer peripheral direction, and the upper surface of the base part 10, tower-like structure 1 ' Reinforcement by improving pull-out resistance It can be, and since the support anchor member 110 not subjected to any processing in itself, there is no fear that the support anchor member 110 is damaged. Further, since the reinforcing anchor member 21 is disposed outside the support anchor member 110 and the pressing member 22 is fixedly disposed on the upper surface of the pedestal portion 10 through the reinforcing anchor member 21, the concrete is hit as before. It is not necessary to form a large space or the like for installation, and the process can be performed with a simple process. Therefore, there is no possibility of damaging the support anchor member 110, and the foundation of the tower-like structure 1 ′ can be easily reinforced.

  According to the reinforcement structure 201 of the tower-like structure foundation, since the pedestal restraining member 23 is disposed in a manner wound around the outer surface of the pedestal portion 10, the pedestal portion 10 is prevented from expanding outward. As a result of being able to improve the restraining force of the pedestal portion 10, the strength of the pedestal portion 10 can be improved, and the foundation of the tower-like structure 1 'can also be reinforced by this. In the third embodiment, the pedestal portion 10 may be composed of the base portion 101 and the extension portion 102.

  As mentioned above, although preferred Embodiment 1-3 of this invention and its modification were demonstrated, this invention is not limited to these, A various change can be made. For example, in the first to third embodiments described above, the pedestal restraining member 23 is used. However, in the present invention, the pedestal restraining member 23 is not essential and may be provided as necessary.

  In the above-described third embodiment, the case where the hook-shaped support anchor member 110 is provided has been described. However, in the present invention, the radial direction is directed from an arbitrary position on the peripheral surface of the lower end portion of the tower-like structure. It may be a support anchor member arranged in a projecting manner.

  Furthermore, in the present invention, as shown in FIG. 12, a reinforcing anchor member 210 made of, for example, a steel plate or the like is disposed so as to surround the outer surface of the pedestal portion 10, and a press attached to the upper end portion of the reinforcing anchor member 210. The member 22 may be fixedly disposed on the upper surface of the base portion 10. At this time, it goes without saying that the pressing member 22 is arranged in a manner covering at least a part of the fracture region A (see FIG. 3) of the support anchor member 11. Even with such a configuration, it is possible to exhibit the operational effects exhibited by the reinforcing structure 20 in the first embodiment as described above, and the reinforcing anchor member 210 has the pedestal portion 10 outward as well as the pedestal restraining member 23. It is possible to exert a function of suppressing the expansion. Thereby, the number of parts can also be reduced.

  In addition, in the first to third embodiments, the reinforcing anchor member and the pressing member are indispensable. However, in some cases, the reinforcing anchor member and the pressing member may be omitted, and only the base restraining member in each of the above embodiments may be used. Absent.

  As described above, both the reinforcing structure of the tower-like structure foundation and the reinforcing method of the tower-like structure foundation according to the present invention are useful for reinforcing the foundation of the tower-like structure such as a chimney.

It is a top view which shows typically the structure of the tower-like structure in Embodiment 1 of this invention. It is a cross-sectional side view which shows typically the structure of the tower-like structure in Embodiment 1 of this invention. It is explanatory drawing which showed the principal part of the tower-like structure shown in FIG. It is the top view which showed typically the modification of the tower-like structure in Embodiment 1 of this invention shown in FIG. It is a top view which shows typically the structure of the tower-like structure in Embodiment 2 of this invention. It is a cross-sectional side view which shows typically the structure of the tower-like structure in Embodiment 2 of this invention. It is explanatory drawing which showed the principal part of the tower-like structure shown in FIG. It is the top view which showed typically the modification of the tower-like structure in Embodiment 2 of this invention shown in FIG. It is a top view which shows typically the structure of the tower-like structure in Embodiment 3 of this invention. It is a cross-sectional side view which shows typically the structure of the tower-like structure in Embodiment 3 of this invention. It is explanatory drawing which showed the principal part of the tower-like structure shown in FIG. It is a sectional side view showing typically the modification of the tower-like structure of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1 'Tower-like structure 10,100 Base part 11,110 Support anchor member 11a Lower end part 11b Upper end part 11c Rod part 20,200,201 Reinforcement structure 21,210 Reinforcement anchor member 21a Lower end part 21b Upper end part 22,22a Press member 23 Base restraint member 101 Base portion 102 Extension portion 103 Reinforcing bar A, B Fracture area

Claims (6)

A structure for reinforcing the foundation of a tower-like structure,
A central axis of the tower-like structure is formed in an outer region of a plurality of long support anchor members embedded along the outer peripheral direction of the tower-like structure in a pedestal part constituting the foundation of the tower-like structure. A reinforcing anchor member disposed along the outer peripheral direction of the tower-like structure with the center at the center,
A pressing member attached to an upper end portion of the reinforcing anchor member and fixedly disposed on an upper surface of the pedestal portion;
The pressing member has a fracture region defined by a line of intersection between a conical surface that forms an angle of 45 ° with respect to the longitudinal direction of the support anchor member and a top surface of the pedestal portion with the lower end of the support anchor member as a top. A reinforcing structure for a tower-like structure foundation, wherein the reinforcing structure is arranged so as to cover at least a part thereof. A structure for reinforcing the foundation of a tower-like structure,
The central axis of the tower-like structure is formed in the outer region of the support anchor member embedded in a radially outward direction from the lower end portion of the tower-like structure in the pedestal part constituting the foundation of the tower-like structure. A reinforcing anchor member disposed along the outer peripheral direction of the tower-like structure with the center at the center,
A pressing member attached to an upper end portion of the reinforcing anchor member and fixedly disposed on an upper surface of the pedestal portion;
The pressing member is gathered along the outer peripheral direction of the tower-like structure, with a straight line having an angle of 45 ° outward with respect to the extending direction of the tower-like structure with respect to the protruding end of the support anchor member. A tower-like structure foundation reinforcing structure, wherein the reinforcing structure is arranged so as to cover at least a part of a fracture area defined by a line of intersection between the curved surface formed by the upper surface of the pedestal portion.   The said pedestal part has an expansion part formed by placing concrete in an outer region of the support anchor member, and a restraining member is disposed in the expansion part. Item 3. A reinforcing structure for a tower structure according to Item 2.   The reinforcing structure for a tower-like structure foundation according to any one of claims 1 to 3, further comprising a pedestal restraining member disposed in a manner surrounding the outer surface of the pedestal portion.   5. The pressing member according to claim 1, wherein the pressing member has an annular shape, is attached to an upper end portion of a reinforcing anchor member, and is fixedly disposed on an upper surface of the pedestal portion. Reinforcement structure of tower-like structure foundation. A method for reinforcing the foundation of a tower-like structure,
A central axis of the tower-like structure is formed in an outer region of a plurality of long support anchor members embedded along the outer peripheral direction of the tower-like structure in a pedestal part constituting the foundation of the tower-like structure. A reinforcing anchor disposing step of disposing a reinforcing anchor member along the outer peripheral direction of the tower-like structure with the center as the center,
Covering at least a part of a fracture region defined by a line of intersection between a conical surface forming an angle of 45 ° with respect to the longitudinal direction of the support anchor member and an upper surface of the pedestal portion with the lower end portion of the support anchor member as a top portion And a pressing member disposing step of fixing and disposing a pressing member on the upper surface of the pedestal portion in a state of being penetrated by the upper end portion of the reinforcing anchor member.

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