JP2000320010A - Column base structure and building unit - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To avoid restrictions on the use of a building due to having a lower beam, to be able to install a plurality of building units in close proximity, and to secure a wide space inside the building unit. A column type structure of a unit type building and a building unit having the column type structure are provided. The column base structure is joined such that a lower end of a leg of the column (11) is biased and aligned with one corner of a base plate (14) having a plane substantially larger than the lower end of the leg. And a pair of stiffener plates (15) erected in a direction perpendicular to each other and connected and reinforced between the legs of the column (11) and the base plate (14). A through hole is formed in the portion of the means (15) for inserting an anchor bolt embedded in a concrete foundation. Further, the building unit (10) includes at least two columns (11) having the column base structure and upper beams (12a, 12b) for fixing upper ends of the columns to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pedestal structure of a building, particularly a unit type building, and a building unit having the pedestal structure.

[0002]

2. Description of the Related Art Conventionally, as a method of constructing a building of a ramen structure composed of columns and beams, a ramen structure previously produced in a factory is transported to a construction site, and a concrete foundation formed in the construction site is constructed in advance. There is known a method of mounting on an upper portion and fixing with an anchor member (Japanese Patent Application Laid-Open No. 8-74322). Further, it relates to a normal steel structure or steel reinforced concrete structure assembled on site,
Although it is not related to the unit type building of the present invention, it is narrow in relation to the adjacent land boundary line, and in order to solve the problem when field work is difficult, the center of the projected contour with respect to the horizontal plane of the base plate and the horizontal plane of the pillar There is also known a column base structure in which a base plate and a column lower end are joined in a state where the center of a projected contour with respect to the center is eccentric (see Japanese Patent Publication No. 6-1 / 1991).
No. 9147).

[0003]

However, in general, a box-shaped structure composed of four pillars erected in parallel with each other and eight beams connecting and fixing the pillars at their upper and lower ends. When the building unit is used for a building including a garage and a store entrance, it is necessary to prevent the influence of the space of the lower beam by providing a ground surface at the upper end of the lower beam.

[0004] The former conventional construction method relates to a box-shaped building unit composed of four beams connecting and fixing the pillars at only the upper ends thereof. As shown in FIG. 8, the base plate 14 'joined to the lower end of the column 11' is connected to four anchors symmetrically provided at equal intervals around the column 11 '. Since the bolts 18 'are fixed on the concrete foundation 17', an anchor at the lower end of the outer wall panel P is provided by enlarging the column shape at the lower end of the column or by providing an additional striking portion 100 made of concrete or the like. It is necessary to cover the bolts 18 ', and a sufficient space for fastening an anchor or the like is required between the building and the adjacent land. It occurs inconvenience that it is difficult to place in close proximity to each other. Furthermore, since it is fixed on the concrete foundation 17 'with four anchor bolts 18', the number of construction steps is increased, and the peripheral members such as the outer wall panel P are often attached to the ramen structure in advance. The disadvantage of difficulty arises.

In the latter conventional column base structure, since the center of the base plate and the center of the column are eccentric,
Even if the working space can be secured to some extent in relation to the neighboring land, the base plate is fixed on the concrete foundation with four anchor bolts buried in the concrete foundation at the four corners and, if necessary, with multiple anchor bolts for reinforcement As a result, the number of construction steps is further increased, and the concept of making it easy to attach peripheral members to the ramen structure in advance is not suggested at all, as it is not related to a unit type building. .

SUMMARY OF THE INVENTION The present invention has been made to solve the problems as described above, and an object of the present invention is to avoid restrictions on the use of a building due to having a lower beam, and
A plurality of building units can be installed close to each other, a space inside the building unit can be widely secured, and it is easy to attach peripheral members to the ramen structure in advance, especially a column base of a unit type building. It is an object of the present invention to provide a building unit having a structure and a pillar structure.

[0007]

In order to achieve the above-mentioned object, a column base structure according to the present invention basically comprises a base plate having a flat surface substantially larger than a lower end of a leg portion of the column. In the pillar base structure, the lower end of the pillar is joined so that one corner at the lower end thereof is aligned with the one corner of the base plate, and the leg of the pillar and the base plate are connected to each other. The stiffener plates are connected and reinforced by a pair of stiffener plate means erected in directions perpendicular to each other.

In a preferred aspect of the present invention, the pair of stiffener plate means is constituted by a pair of stiffener plates arranged in parallel, and an anchor bolt embedded in a concrete foundation in a portion of the base plate between the pair of stiffener plates. A through-hole is formed for inserting a through hole. Further, in the building unit according to the present invention, the upper ends of at least two mutually parallel pillars are fixed to each other by an upper beam, and each of the pillars has one corner at the lower end of its leg. Are joined so as to be aligned with one corner of the base plate whose plane is substantially larger than the lower end of the leg, and the base plate is connected to another corner that is not joined with one corner of the lower end of the leg of the pillar. A corner portion, another corner portion of the base plate is provided inside the building unit, and the legs of the pillar and the base plate are erected in directions perpendicular to each other. And a column base structure reinforced and connected by a pair of stiffener plate means.

Also in this case, in a preferred embodiment, each of the columns is constituted by a pair of stiffener plates in which the pair of stiffener plate means are respectively provided in parallel, and the base plate is provided between the pair of stiffener plates. It has a column-base structure in which a through-hole for penetrating an anchor bolt buried in a concrete foundation is penetrated.

[0010] In the present specification, "the one corner at the lower end of the pillar leg is aligned with the one corner of the base plate" means that both corners substantially coincide with each other, or It means that they are as close as possible to each other, and when the corner of the bottom surface of the pillar is similar to the corner of the base plate, the two corners are similar to each other. Means that the corners of the pillars substantially coincide with each other and overlap each other. When the corner of the bottom shape of the leg of the pillar and the corner of the base plate are different from each other, for example, When the former is a plane circle and the latter is a square, it means a state in which the entire lower end of the leg of the column is at least supported on the base plate and joined to one corner of the base plate as unevenly as possible.

In the column base structure according to the present invention having such a configuration, the lower ends of the legs of the column are joined so that one corner thereof is aligned with one corner of the base plate, and Between the leg portion of the pillar and the base plate is connected and reinforced by a pair of stiffener plate means erected in a direction perpendicular to each other, so that the building unit internal space can be widely secured, and furthermore, The peripheral member can be easily attached to the ramen structure in advance. Further, the fixing of the building unit to the concrete foundation via anchor bolts or the like buried in the concrete foundation is basically performed at two places near a pair of stiffener plate means. Can be significantly reduced as compared with the case of the conventional building unit, and the speed of the anchor fastening operation can be increased.

Further, a through hole for inserting an anchor bolt buried in a concrete foundation is provided in a portion of the base plate between the pair of stiffener plates arranged in parallel, so that the column and the stiffener plate are provided. The strength between the base plate and the concrete foundation can be sufficiently secured, and the strength between the base plate and the concrete foundation can be sufficiently ensured. Further, the anchor can be fastened from inside the building unit. Work can be performed very easily and quickly.
Further, in the building unit according to the present invention, when no lower beam is required, the internal space of the building unit can be prevented from being restricted by the lower beam.

[0013] The base plate has another corner that is not joined to one corner of the lower end of the pillar leg, and the other corner of the base plate is provided inside the building unit. With this configuration, the base plate and the anchor bolt do not exist on the peripheral member mounting side such as the outer wall panel, so that it is not necessary to enlarge the column shape at the lower end of the column or to provide an additional stamping portion made of concrete or the like. This makes it possible to make the columns of the adjacent building units substantially close to each other, and to install a plurality of building units in close proximity.

[0014]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Here, FIG. 1 shows an embodiment of a building unit having a column base structure according to the present invention. This building unit 10 is a box-shaped one, and has four pillars 11 which are made of a square steel tube having a substantially rectangular cross section and which stand upright in parallel with each other, and which are connected and fixed at an upper end between the pillars 11. And four upper beams 12a and 12b. In the figure, reference numeral 13 denotes the upper beam 1 opposed to the upper beam.
It is a small beam for reinforcing between 2a.

A steel base plate 14 having a plane substantially larger than the lower ends of the legs is joined to the lower ends of the legs of the columns 11. More specifically, as shown in FIGS. 2 and 3 in an enlarged manner, the lower ends of the legs of the column 11 are joined so that one corner thereof is aligned with one corner of the base plate 14. . That is, the lower ends of the legs of the pillars 11 overlap each other so that each side of one corner thereof substantially coincides with each side of one corner of the base plate 14. Is
Another one which is not joined to one corner of the lower end of the leg of the pillar 11
It has a corner. Furthermore, the space between the leg of the column 11 and the base plate 14 is connected and reinforced by a pair of stiffener plate means 15 erected in directions perpendicular to each other. That is, the stiffener plate means 1
Reference numeral 5 denotes a pair of stiffener plates 15a which are arranged in parallel and spaced apart from each other. By welding the side surface of the lower end and the upper surface of the base plate 14, respectively, the leg portion of the column 11 and the base plate 14 are connected and reinforced. Further, the pair of stiffener plates 15
As shown in FIGS. 3 and 4, through holes 19 are respectively formed between the holes a for inserting anchor bolts 18 buried in the concrete foundation 17. In FIG. 4,
20 is the base plate 14 and the concrete foundation 17
A mortar portion 21 interposed between the nut 21 and a nut screwed onto the upper portion of the anchor bolt 18. As described above, the base plate 14 has another corner that is not joined to one corner of the lower end of the leg of the pillar 11, and the other corner of the base plate 14 , Projecting inside the building unit 10 described below.

Next, the building unit 10 constructed as described above
The method of assembling and fastening on the concrete foundation 17 will be described. First, it is composed of four pillars 11 including the base plate 14, four upper beams 12a and 12b for connecting and fixing the pillars 11 to each other, and small beams 13 for reinforcing between the upper beams 12a. Building unit 10
It is assembled in advance in a factory via welding or the like as shown in FIG. 1, and then the required number is transported to a building site by a truck or the like. In this case, in each building unit 10, the outer wall and other peripheral members may be pre-attached at the factory as needed. Further, each of the building units 10 may be partially assembled at a factory or entirely assembled at a construction site.

Thereafter, each building unit 10 is sequentially lifted by a crane and placed on the concrete foundation 17 via a leveling mortar or the like. At this time, anchor bolts 18 buried at predetermined positions on concrete foundation 17
Are respectively inserted into the through holes 19 of the base plate 14. Next, a nut 21 is screwed onto an upper part of the anchor bolt 18 protruding from the through hole 19 of the base plate 14. In this case, after a predetermined height level of each building unit 10 is set and confirmed, the concrete foundation 1
7 and the mortar 20 between the base plate 14.
Is filled.

After the building units 10 are fixed on the concrete foundation 17 as described above, the building units 10 are connected and connected to each other by a suitable connecting member (not shown). After that, the necessary outer wall material, inner wall material, and ceiling material that are not pre-attached (all not shown)
Is carried out, and concrete is put into the bottom of the internal space of the building unit 10 or floor work is added. As the structure of the concrete foundation 17, as shown in FIG. 1, by connecting the column bases with the foundation underground beam 22, a sufficient strength can be secured without any lower beam. In this case, the upper surface of the foundation underground beam 22 is at the ground level. In addition, in this figure, 23 has shown the base concrete.

The building unit 10 having the above configuration is
The lower ends of the legs of the column 11 are joined such that one corner thereof is aligned with one corner of the base plate 14, and another corner of the base plate 14 is projected inside the building unit 10, Further, since the space between the leg portion of the pillar 11 and the base plate 14 is connected and reinforced by a pair of stiffener plate means 15 erected in directions perpendicular to each other, no lower beam is required, and the building is not required. Unit 1
Zero internal space can be secured more widely, and effective use can be achieved. And the base plate 14
Is made bilaterally symmetrical in both the wife direction and the girder direction of the building unit 10, and the other corner of the base plate 14 is directed to the inside of the building unit 10, One of the base plates 14 is
By eliminating the protrusions due to the corners, as shown in FIG. 5, the columns 11 of the building units 10 can be brought into close contact with each other, and a plurality of building units 10 can be installed close to each other. In addition, various arrangement forms shown in FIG. 6 are conceivable for the arrangement of the pillars of the building unit 10.

Further, it is possible to easily attach a peripheral member to the ramen structure in advance. Further, since the building unit 10 is installed on the top end of the concrete foundation 17, it is at the same level as the building unit having the conventional beams, and the ceiling height in the building unit 10 can be increased. Note that the number of the building units 10 arranged in parallel in this way is appropriately determined as necessary.
Furthermore, the concrete foundation 1 of the building unit 10 via the anchor bolt 18 embedded in the concrete foundation 17
7 is performed at two places between each pair of stiffener plates 15a, so that the number of construction steps is significantly reduced as compared with a conventional base plate which is fixed with anchor bolts at at least four places. Can be. Moreover, since this anchor fastening can be performed from inside the building unit 10, the anchor fastening work can be performed very easily.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment.
The design can be appropriately changed without departing from the spirit of the invention described in the claims. For example, in the above embodiment, four pillars 11 are used as the building unit 10 and these pillars are connected to each other at the upper end and fixed.
Although the box-shaped one composed of the upper beams 12a and 12b has been described, the present invention is not limited to this, and one upper beam 12a or one upper beam 12a for connecting and fixing the two columns 11 at their upper ends is provided.
2b (see FIG. 7), or three columns 11, and connecting and fixing the columns at their upper ends.
The upper beams 12a and 12b, and the five or more columns 11 and the upper beams 12a and 12b connecting and fixing the columns at their upper ends.
A building unit 10 having an arbitrary shape can be basically formed of two pillars 11 and one upper beam 12a or 12b.

The cross-sectional shape of the column is not limited to the rectangular steel pipe having a square cross section of the above embodiment, but may be applied to an arbitrary one such as a cylindrical steel pipe or an H-shaped steel. Further, the base plate to be joined to the leg portion of the column is not limited to the planar square shape as in the above embodiment, but may have any shape in consideration of the relationship with the column and concrete foundation, such as a quadrant. It can be. Furthermore, the shape of the stiffener plate constituting the stiffener plate means,
The size and the number can also be appropriately changed as needed. For example, if a sufficient strength can be ensured by increasing the thickness or the like, it is possible to use only one stiffener plate without providing the pair of stiffener plates 15a as in the above embodiment.

[0023]

As will be understood from the above description, in the column base structure according to the present invention, the lower ends of the legs of the column are joined such that one corner thereof is aligned with one corner of the base plate. And, between the leg portion of the column and the base plate, since it is connected and reinforced by a pair of stiffener plate means erected in a direction perpendicular to each other,
The building unit having such a column base structure can secure a wide internal space, and furthermore, the fixing between the base plate and the concrete foundation is performed by anchoring only at a location inside the building unit. because there is,
It becomes easy to attach peripheral members such as outer walls to the ramen structure in advance. Further, in the building unit according to the present invention, when no lower beam is required, the internal space of the building unit can be prevented from being restricted by the lower beam, and the building unit according to the present invention is:
A plurality of building units can be installed close to each other so that the columns of the adjacent building units are brought into close contact with each other.

Further, the fixing of the building unit to the concrete foundation via anchor bolts or the like buried in the concrete foundation is basically performed only at two places near a pair of stiffener plate means. In this case, the number of fastening steps can be significantly reduced as compared with the conventional building unit, and the anchor can be fastened from inside the building unit. Therefore, the anchor fastening work can be performed extremely easily and quickly. .

Further, the pair of stiffener plate means is constituted by a pair of stiffener plates arranged side by side, and a through hole for inserting an anchor bolt is provided between the pair of stiffener plates. In addition, the strength between the column and the base plate can be sufficiently ensured, and the strength between the base plate and the concrete foundation can be sufficiently ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a building unit having a column base structure according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a column base structure of the building unit of FIG. 1;

FIG. 3 is an enlarged plan view showing a column base structure portion of the building unit in FIG. 1;

FIG. 4 is an enlarged sectional view showing a column base structure portion of the building unit of FIG. 1;

FIG. 5 is a perspective view showing a state in which a plurality of building units of FIG. 1 are installed close to each other.

FIG. 6 is a view showing an arrangement form of column bases of the building unit of FIG. 1;

FIG. 7 is a side view showing another embodiment of the building unit of the present invention.

FIG. 8 is an enlarged sectional view showing a column base structure portion of a conventional building unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Building unit 11 ... Column 12a, 12b ... Upper beam 13 ... Small beam 14 ... Base plate 15 ... Stiffener plate means 15a ... Stiffener plate 17 ... Concrete foundation 18 ... Anchor bolt 19 ... Through hole 20 ... Mortar part 21 ... Nut 22 ... Foundation underground beam

 ──────────────────────────────────────────────────続 き Continued on front page (72) Inventor Katsuya Tanaka 32 Wadai, Tsukuba, Ibaraki Sekisui Chemical Co., Ltd. (72) Inventor Masahiro Suzuki 106 Someya, Sakaicho, Sarushima-gun, Ibaraki Inventor Naoki Hirashima 4-33-6 Fukue, Ichikawa-shi, Chiba F-term in Okabe Engineering Co., Ltd. (Reference) 2D046 AA17

Claims (4)

[Claims] 1. A column-base structure comprising a base plate having a substantially lower plane than the lower end of the column and a lower end of the column, wherein one corner of the lower end of the column has one corner of the base plate. It is joined so as to align with the corner, and between the leg of the pillar and the base plate,
A pedestal structure characterized by being connected and reinforced by a pair of stiffener plate means erected in directions perpendicular to each other. 2. A method according to claim 1, wherein said pair of stiffener plates is constituted by a pair of stiffener plates arranged side by side, and an anchor bolt embedded in a concrete foundation is inserted into a portion of said base plate between said pair of stiffener plates. The column base structure according to claim 1, wherein a through hole is formed. 3. In a building unit having upper ends of at least two parallel columns made of steel fixed to each other by an upper beam, the base plate is not joined to one corner of the lower end of the leg of the column. A corner having another corner portion, wherein the other corner portion of the base plate is provided inside the building unit, and each of the pillars has the pillar base structure according to claim 1. Building unit. 4. In a building unit in which upper ends of at least two parallel columns made of a steel material are fixed to each other by upper beams, the base plate is not joined to one corner of a lower end of a leg of the column. Another corner portion of the base plate is provided inside the building unit, and each of the pillars has a column base structure according to claim 2. Building unit.