JP2010255320A - Column integrated pile foundation structure of small-scale building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein a conventional column integrated pile foundation structure of a small-scale building is constituted only by filling the outer periphery of a cylindrical buried part with soil cement, and in consequence, the adhesion between the buried part and the soil cement is weak and there is a possibility of the buried part being pulled out of the soil cement through a pull-out force. <P>SOLUTION: The column integrated pile foundation structure of the small-scale building is constituted by mounting a plurality of peripheral projecting bodies 14 to the buried part 13 to project from the outer periphery of the buried part 13, and solidifying a foundation material 15 integrally with the buried part 13 and the peripheral projecting bodies 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pillar-integrated pile foundation structure for a small-scale building, and in particular, a plurality of outer peripheral protrusions are attached to the embedded part so as to protrude from the outer periphery of the embedded part, and integrated with the embedded part and the outer peripheral protruding body. By constructing the base material to be solidified, it is possible to improve the adhesive force between the buried part and the base material, and relates to a new improvement for more reliably resisting the pulling force. .

  As this type of pillar-integrated pile foundation structure conventionally used, for example, a configuration shown in Patent Document 1 and the like can be cited. FIG. 4 is a front view showing a pillar-integrated pile foundation structure of a conventional small-scale building. In the figure, a buried portion 13 below a pillar 12a of an agricultural pipe house is inserted into a borehole 11 excavated in the ground. The excavation hole 11 is filled with a soil cement 16 in which a cement-based solidifying agent and soil are mixed, and the soil cement 16 is solidified integrally with the embedded portion 13.

JP-A-11-187773

  In the conventional pillar-integrated pile foundation structure of a small-scale building as described above, since the structure is only filled with the soil cement 16 on the outer periphery of the cylindrical embedded portion 13, the buried portion 13 and the soil cement 16 There is a possibility that the embedded portion 13 may come off the soil cement 16 due to the pulling force acting on the column during a storm or an earthquake, for example.

  The present invention has been made to solve the above-described problems, and its purpose is to improve the adhesion between the buried portion and the base material, and to reduce the resistance to pulling force more reliably. It is to provide a pillar-integrated pile foundation structure for large-scale buildings.

  A pillar-integrated pile foundation structure for a small-scale building according to the present invention includes a cylindrical excavation hole excavated in the ground, and a buried portion that is provided in a lower portion of a pillar of a small-scale building and is inserted into the excavation hole And a plurality of outer peripheral protrusions that are arranged at intervals along the longitudinal direction of the embedded portion and are attached to the embedded portion so as to protrude from the outer periphery of the embedded portion, and the excavation hole is filled And a cylindrical base material solidified integrally with the embedded portion and the outer peripheral projecting body.

The outer peripheral projecting body includes a C-shaped clamp body attached to the embedded portion so as to surround the outer periphery of the embedded portion, and an end portion of the clamp body so that the clamp body clamps the embedded portion. It is comprised from the fastening member which fastens between.
Moreover, the said outer periphery protrusion body is comprised from the stud bolt which penetrated the said embed | buried part, and a pair of nut screwed by the both ends of the said stud bolt.
Moreover, the said base material is comprised only from concrete.

  According to the pillar-integrated pile foundation structure of a small-scale building of the present invention, a plurality of outer peripheral protrusions are attached to the embedded part so as to protrude from the outer periphery of the embedded part, and are integrated with the embedded part and the outer peripheral protrusion. Since the base material is solidified, it is possible to improve the adhesion between the buried portion and the base material, and more reliably resist the pulling force.

Moreover, since an outer periphery protrusion is comprised from a clamp body and a fastening member, the attachment of an outer periphery protrusion to an embedding part can be made easy, and the convenience can be improved.
Moreover, since the outer peripheral protrusion is composed of a stud bolt and a pair of nuts, the component cost can be reduced as compared with the case where a clamp body or the like is used.
Moreover, since the base material is comprised only of concrete, compared with the case where soil cement is used, the adhesive force between an embed | buried part and a base material can be improved, and it can resist more reliably with respect to extraction force.

It is a front view which shows the pillar-integrated pile foundation structure of the small-scale building by Embodiment 1 of this invention. It is a front view which expands and shows the embedding part periphery of FIG. It is a front view which shows the pillar integrated pile foundation structure of the small-scale building by Embodiment 2 of this invention. It is a front view which shows the pillar integrated type pile foundation structure of the conventional small-scale building.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing a pillar-integrated pile foundation structure of a small-scale building according to Embodiment 1 of the present invention, and is an enlarged front view showing the periphery of an embedded portion in FIG. In FIG. 1, a cylindrical excavation hole 11 is excavated on the ground 10 by, for example, an earth auger or the like. In the excavation hole 11, a buried portion 13 provided at the lower part of the pillar 12 a of the small-scale building 12 is inserted. In FIG. 1, an agricultural pipe house is shown as the small-scale building 12, but the small-scale building may be a barn or a compost house.

  As shown in FIG. 2, a plurality of outer peripheral protrusions 14 are attached to the embedded portion 13 so as to protrude from the outer periphery of the embedded portion 13. The outer circumferential protrusions 14 are arranged at intervals from each other along the longitudinal direction 13 a of the embedded portion 13. In this Embodiment 1, the outer peripheral protrusion 14 is comprised from the clamp body 14a and the fastening member 14b. The clamp body 14 a is a C-shaped member, and is attached to the embedded portion 13 so as to surround the outer periphery of the embedded portion 13. The fastening member 14b is composed of, for example, a headed bolt and a nut, and is for fastening between the ends of the clamp body 14a so that the clamp body 14a clamps the embedded portion 13.

  The excavation hole 11 is filled with a base material 15 made of only concrete not mixed with soil, and the base material 15 is solidified integrally with the embedded portion 13 and the outer peripheral protrusion 14. The outer peripheral projecting body 14 is disposed so as to overlap the base material 15 when the excavation hole 11 is viewed from above, and the outer peripheral projecting body 14 is engaged with the base material 15 in the longitudinal direction 13 a of the embedded portion 13. .

  In such a pillar-integrated pile foundation structure of a small-scale building, a plurality of outer peripheral protrusions 14 are attached to the embedded part 13 so as to protrude from the outer periphery of the embedded part 13, and the embedded part 13 and the outer peripheral protruded body 14. Since the base material 15 is solidified integrally, the embedded portion 13 and the base material 15 are more reliably integrated via the outer peripheral protrusion 14. Thereby, the adhesive force between the burying part 13 and the base material 15 can be improved, and for example, it is possible to more reliably resist the pulling force against the pulling force acting on the column during a storm or an earthquake.

  Moreover, since the outer periphery protrusion 14 is comprised from the clamp body 14a and the fastening member 14b, attachment of the outer periphery protrusion 14 with respect to the embed | buried part 13 can be made easy, and the convenience can be improved.

  Moreover, since the base material 15 is comprised only from concrete, compared with the case where soil cement is used, the adhesive force between the embedding part 13 and the base material 15 can be improved, and it resists more reliably with respect to extraction force. it can. In addition, when soil cement is used, it is difficult to calculate the yield strength of the foundation structure, so it cannot be applied to buildings where the yield strength calculation is required, such as livestock barns and compost houses, but the foundation as in this embodiment. By constituting the material 15 only from concrete, it can also be applied to small-scale buildings such as barns.

Embodiment 2. FIG.
FIG. 3 is a front view showing a pillar-integrated pile foundation structure of a small-scale building according to Embodiment 2 of the present invention. In the first embodiment, it has been described that the outer peripheral projecting body 14 includes the clamp body 14a and the fastening member 14b. However, the outer peripheral projecting body 14 of the second embodiment includes a stud bolt 14c and a pair of nuts 14d. It is configured. The stud bolt 14c does not have a screw head, and is a bolt in which screws are cut at both ends or the whole. The stud bolt 14 c passes through the embedded portion 13, and both ends of the stud bolt 14 c protrude from the outer periphery of the embedded portion 13. The nut 14 d is screwed to both ends of the stud bolt 14 c and fixes the stud bolt 14 c to the embedded portion 13. Other configurations are the same as those in the first embodiment.

  In such a pillar-integrated pile foundation structure of a small-scale building, since the outer peripheral projecting body 14 is composed of a stud bolt 14c and a pair of nuts 14d, the clamp body 14a or the like is used as in the first embodiment. Compared with the case, the parts cost can be reduced.

DESCRIPTION OF SYMBOLS 10 Ground 11 Excavation hole 12 Small building 12a Pillar 13 Buried part 14 Outer peripheral protrusion 14a Clamp body 14b Fastening member 14c Stud bolt 14d Nut 15 Base material

Claims (4)

A cylindrical excavation hole (11) excavated in the ground (10);
An embedded part (13) provided at the lower part of the pillar (12a) of the small-scale building (12) and inserted into the excavation hole (11);
A plurality of outer peripheries attached to the embedded part (13) so as to be spaced from each other along the longitudinal direction (13a) of the embedded part (13) and project from the outer periphery of the embedded part (13) A protrusion (14);
A small scale characterized by comprising a cylindrical base material (15) filled in the excavation hole (11) and solidified integrally with the embedded portion (13) and the outer peripheral projection (14). Pile foundation structure with integrated pillars for buildings.   The outer peripheral projecting body (14) includes a C-shaped clamp body (14a) attached to the embedded portion (13) so as to surround the outer periphery of the embedded portion (13), and the clamp body (14a) includes the The pillar of the small-scale building according to claim 1, characterized in that it is composed of a fastening member (14b) for fastening between the end portions of the clamp body (14a) so as to clamp the embedded portion (13). Integrated pile foundation structure.   The outer peripheral projecting body (14) includes a stud bolt (14c) penetrating the embedded portion (13) and a pair of nuts (14d) screwed to both ends of the stud bolt (14c). The pillar-integrated pile foundation structure for a small-scale building according to claim 1.   The pillar-integrated pile foundation structure for a small-scale building according to any one of claims 1 to 3, wherein the foundation material (15) is composed only of concrete.

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