JP2015021277A - Structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure that decreases the height of the whole building by decreasing a floor height without the need for an inner column.SOLUTION: A structure 10 includes: a column group that is juxtaposed in a first direction (X-axis direction) and a second direction (Y-axis direction) orthogonal to the first direction (X-axis direction); a pair of cantilever beams 16B and 16C that are sprung out toward mutual columns from one column 12B of the column group and the other column 12C positioned in the first direction (X-axis direction) of the one column 12B; and a floor board that is supported by the cantilever beams 16B and 16C.

Description

  The present invention relates to a structure.

Technology that lowers the height of the entire building by lowering the floor height while maintaining a high ceiling height in order to reduce the influence of the height of the building on the neighborhood (the feeling of pressure) and reduce the construction cost of the building Is required.
For example, Patent Document 1 discloses a technique for ensuring a high effective ceiling height and reducing a floor height.

  In Patent Document 1, in a building in which the living room portions 2 are arranged on both sides of the inner corridor 1, a span-direction large beam 9 spanned between the outer peripheral pillars 5 is cut out at the inner corridor 1 portion. The both ends of the large beam 9 in the span direction are respectively supported by the inner pillars 7 provided on both sides. With this configuration, the effective ceiling height of the inner corridor 1 sandwiched between the inner pillars 7 is secured high.

JP 2002-97715 A

However, in the configuration of Patent Document 1, an inner pillar that supports the large beam is required.
In view of the above facts, an object of the present invention is to provide a structure that lowers the floor height without requiring an inner pillar and lowers the height of the entire building.

  The structure according to the first aspect of the present invention includes a first direction, a column group arranged in parallel in a second direction orthogonal to the first direction, one column of the column group, and the one column. It has a pair of cantilever beams jumped from the other pillars in the first direction toward the other pillars, and a floor plate supported by the cantilever beams.

  By passing equipment piping between the free ends of a pair of cantilevers, the space behind the ceiling can be reduced compared to a configuration in which equipment piping is passed under the beams, ensuring the necessary living height. , The height of the structure can be lowered. Further, the ceiling height can be partially increased by providing a space between the free ends of the pair of cantilevers or by fitting the ceiling plate between the free ends of the pair of cantilevers.

According to a second aspect of the present invention, in the structure according to the first aspect, the one column and the other column are provided in the first direction, and the protruding direction of each of the cantilevers The first beam is spanned between the pillars on the opposite side.
The first beam provided on the opposite side of the cantilever beam constitutes a frame on one column and the other column on which the cantilever beam is provided, so that the cantilever beam that jumps out from one column and the other column. Can be increased in size.

According to a third aspect of the present invention, in the structure according to the second aspect, at least one of the columns supporting the first beam jumps out in the first direction on the side opposite to the first beam. It is characterized by a cantilever beam.
As a result, the first beam spanned between one column or the first beam or the first beam spanned between the other column and the column, and jumping outward from both sides of this frame The cantilever beam to be taken out can be handled as a frame unit provided with the cantilever beam.

  Invention of Claim 4 WHEREIN: In the structure of any one of Claims 1-3, Between the said 1 pillar and the 1 pillar in the said 2nd direction of the said 1 pillar, And between the other pillar and another pillar in the second direction of the other pillar, a second beam is bridged in the second direction, respectively, and is opposed to the second beam. A pair of cantilever beams are ejected toward the second beam in the first direction, and the floor plate is supported by the cantilever beams.

  As a result, a space between the free ends of the pair of cantilever beams and a space between the free ends of the pair of cantilever beams are continuously formed in the second direction. Moreover, since a 2nd beam and a cantilever small beam support a floor board, the support strength of a floor board can be raised.

According to a fifth aspect of the present invention, in the structure according to the fourth aspect, the space between the free ends of the cantilever and between the free ends of the cantilever beam is an installation space. It is characterized by having.
Compared to the configuration in which equipment piping passes through the equipment space between the free ends of the cantilever and between the free ends of the cantilevered beam, the space behind the ceiling Even if the necessary living height is secured, the height of the structure can be lowered.

  Since this invention is set as the said structure, it can provide the structure which makes a floor height low and does not require an inner pillar and makes the height of the whole building low.

(A) is a top view which shows the frame figure of the structure based on 1st Embodiment of this invention, (B) is the elements on larger scale. (A) is the Y1-Y1 sectional view taken on the line of FIG. 1 (A), (B) is the elements on larger scale. (A) is the Y2-Y2 sectional view taken on the line of FIG. 1 (A), (B) is sectional drawing which shows the expansion example. (A) (B) is sectional drawing for demonstrating the effect of the expansion | deployment example of FIG. 3 (B). (A) is sectional drawing for demonstrating the effect of the other expansion | deployment example of FIG. 3 (A), (B) is sectional drawing which shows the structure of the X-axis direction of FIG. 3 (B). (A) is a top view explaining another example of development of the structure concerning a 1st embodiment of the present invention, and (B) is a Y3-Y3 line sectional view of Drawing 6 (A). (A) is sectional drawing which shows the basic composition of the structure concerning 2nd Embodiment of this invention, (B) is sectional drawing which shows the example of expansion | deployment of the structure concerning 2nd Embodiment. (A) is sectional drawing which shows the other expansion example of the structure based on 2nd Embodiment of this invention, (B) is sectional drawing which shows the structure of the X-axis direction of FIG. 7 (A). . (A) is sectional drawing which shows the basic composition of the structure based on 3rd Embodiment of this invention.

(First embodiment)
As shown in FIG. 1 and the sectional view of FIG. 2A, the structure 10 according to the first embodiment includes an X-axis direction (first direction) and a Y-axis direction orthogonal to the X-axis direction. It has a plurality of columns (column groups) arranged in parallel in the (second direction).
A basic structure of the frame will be described with reference to a partially enlarged view of FIG. The plurality of pillars are all made of Pca (precast) concrete, and are separated by a predetermined distance x in the X-axis direction, and columns 12A, 12B, 12C, and 12D, and a predetermined distance y in the Y-axis direction. Columns 14A, 14B, 14C, and 14D that are spaced apart from each other are provided, and all of these columns are provided at the intersections of the lattice.

A beam 24A is spanned between the columns 12A and 12B in the X-axis direction, a beam 24B is spanned between the columns 12C and 12D, and a beam 26A is spanned between the columns 14A and 14B. A beam 26B is built between the column 14C and the column 14D.
Further, the cantilever 16A from the column 12A and the cantilever 16B from the column 12B are ejected in the X-axis direction and in the opposite direction to the beam 24A, and the cantilever 16C is projected from the column 12D from the column 12D. The cantilever 16D protrudes in the X axis direction and in the opposite direction to the beam 24B.
Similarly, the cantilever 28A is projected from the column 14A, the cantilever 28B is ejected from the column 14B in the direction of the X axis and opposite to the beam 26A, and the cantilever 28C is projected from the column 14C to the column 14D. The cantilever 28D protrudes from the beam 24A in the direction opposite to the beam 24A.

In the Y-axis direction, a beam 30A is spanned between the column 12A and the column 14A, a beam 30B is spanned between the column 12B and the column 14B, and a beam 30C is spanned between the column 12C and the column 14C. A beam 30D is provided between the column 12D and the column 14D.
A plurality of small beams 32A are bridged in the X-axis direction between the beams 30A and 30B, and a plurality of cantilever small beams 34A and 34B are provided on the opposite side of the beams from the beams 30A and 30B. Has been bounced off. Similarly, a plurality of small beams 32B are bridged in the X-axis direction between the beams 30C and 30D, and a plurality of cantilever small beams 34C are provided on the side opposite to the small beam 32B from the beams 30C and 30D. , 34D has been ejected.

Thereby, with the beams 24A, 24B, 26A, 26B, the cantilevers 16A, 16B, 16C, 16D, 28A, 28B, 28C, 28D, the small beams 32A, 32B, the cantilever beams 34A, 34B, 34C, 34D, A slab (floor board) 18 is supported (see FIG. 3).
Also, a space J sandwiched between the free ends of the cantilever beams 16B and 28B and the cantilever beams 16C and 28C facing each other, and a space J sandwiched between the free ends of the cantilever beam 34B and the cantilever beams 34C facing each other. Are continuously formed in the Y-axis direction.

  Here, the space J is provided on both sides of the cantilevers 16A and 16B sandwiching the beams 24A and 26A and on both sides of the cantilevers 16A and 16B sandwiching the beams 24B and 26B. In addition, although illustration is abbreviate | omitted, the beam pinched | interposed in the space J is not limited to the length of 1 span mentioned above. For example, the cantilever beams 16B and 16C are eliminated, the beam 24A to the beam 24B are continuous, the cantilever beams 28B and 28C are eliminated, and the beam 26A to the beam 26B are continuous (two spans). It may be provided or may be provided with a span longer than that.

FIG. 3A is a cross-sectional view illustrating a configuration of the space J. The space J is provided between a pair of pillars (one pillar) 12B and pillars (other pillars) 12C arranged adjacent to each other in the X-axis direction. Cantilever beams 16B and 16C are attached to the column 12B and the column 12C toward the other column. The cantilevers 16B and 16C are provided with their free ends facing each other, and support the slab 18 on the upper surface.
Each of the cantilevers 16A and 16B is formed of an H-shaped steel, and a predetermined distance is provided between the free ends of the cantilevers 16A and 16B protruding in the X-axis direction (between the front ends facing each other). A space J is formed by opening L1.

  The space J is a section where the slab 18 is not supported by the cantilever beams 16B and 16C, and the distance L1 in the X-axis direction of the space J is set in consideration of the allowable distance calculated from the frame strength. That is, even if the slab 18 is not directly supported by the beam in the space J, the slab 18 does not fall with its own rigidity. Thereby, the width dimension L2 of cantilever part lower space including a cantilever part can be largely ensured by changing the space | interval of a pair of pillar 12A, 12B and adjusting the protrusion length L3.

  As a result, as shown in FIG. 3B, the facility pipe 20 can be passed in the Y-axis direction through the space J between the free ends of the pair of cantilever beams 16A and 16B. The ceiling pipe 22 is raised (closer to the slab 18) by moving the facility pipe 20 from the position below the beams 16A and 16B, which has been conventionally arranged, to the position next to the beams 16A and 16B. The space H can be lowered. That is, the necessary living height CH from the floor finish surface 46 to the ceiling 22 can be ensured, and the height of the structure can be lowered.

Specifically, as shown in FIG. 4A, in the conventional configuration in which the equipment piping 20 is passed under the beam 15, the height HJ of the ceiling back is the height H1 of the beam 15 and the height of the equipment piping 20. In a building equipped with production facilities H2, the total dimension (HJ = H1 + H2 + h3) of the height H3 of the production-related equipment piping 36 was required.
On the other hand, as shown in FIG. 4B, in the present invention, the height H of the ceiling back is included in the height H1 of the beam 15 (the height H2 of the equipment pipe 20 is included in the height H1 of the beam 15). ), The dimension (H = H1 + H3) obtained by summing the heights H3 of the production-related equipment piping 36. Thereby, a floor height can be made low and a building height can be made low.

The cross-sectional view of FIG. 5A shows another example of utilization of the space J. In the space J, the ceiling plate 22 is fitted to the lower surface of the slab 18. By fitting the ceiling plate 22 into the space J, the ceiling height of the indoor space 38 can be partially increased from the conventional ceiling height CH1 to the ceiling height CH2 of the space J.
The cross-sectional view of FIG. 5B shows the relationship with the beams 24A and 24B in the X-axis direction of the space J.
That is, a beam 24A is provided at one end of the column 12B, and a cantilever 16B is provided at the other end to constitute a frame (see FIG. 2B). Similarly, a beam 24B is provided at one end of the column 12C, and a cantilever 16C is provided at the other end to constitute a frame. Thereby, the cantilever beams 16B and 16C can be increased in size.

  Further, as shown in FIG. 1B, a cantilever 16A is provided on the opposite side of the beam 24A from the cantilever 16B in the X-axis direction, and on the opposite side of the beam 24B from the cantilever 16C. A cantilever 16D is provided. In this way, for example, a frame including the cantilever beams 16A and 16B jumping outward from both sides of the beam 24A can be handled as one frame unit, and the frame unit is moved in the X-axis direction and the Y-axis direction. The structure 10 of this embodiment is formed by arranging at a predetermined interval. For this reason, the support intensity | strength of the slab 18 can be raised by setting a predetermined space | interval appropriately.

As shown in the plan view of FIG. 6A and the cross-sectional view of FIG. 6B, the ends of the cantilever beams 16B and 16C that protrude into the space J and face each other are made of H-section steel. The small beams 44B and 44C may be joined.
Here, the small beam 44B is arranged by connecting between the open end portions of the adjacent cantilever beams 16B and 28B, and both end portions are joined to the side surfaces of the cantilever beams 16B and 28B by, for example, bolts or the like. The open end of the cantilever beam 34B is joined to the side surface of the beam 44B. Similarly, the small beam 44C is disposed between the open ends of the adjacent cantilevers 16C and 28C, and both ends are joined to the side surfaces of the cantilevers 16C and 28C. The open end of the cantilever beam 34C is joined to the side surface of the beam 44C.

  This configuration is the same in other spaces J. That is, the small beam 44A is disposed between the open ends of the adjacent cantilevers 16A and 28A, and both ends are joined to the side surfaces of the cantilevers 16A and 28A. The open end of the cantilever beam 34A is joined to the side surface of the beam 44A. Similarly, the small beam 44D is disposed between the open ends of the adjacent cantilevers 16D and 28D, and both ends are joined to the side surfaces of the cantilevers 16D and 28D. The open end of the cantilever beam 34D is joined to the side surface of the beam 44D.

  Thereby, installation of the slab in the upper portion of the space J is facilitated, and the cantilever beams 16A and 28A and the cantilever beam 34A can be more strongly integrated. Similarly, integration of cantilever beams 16B and 28B and cantilever beam 34B, integration of cantilever beams 16C and 28C, and cantilever beam 34C, cantilever beams 16D and 28D, and cantilever beam 34D Can be more strongly integrated. As a result, the frame strength of the structure 10 can be increased.

  As described above, according to the present embodiment, the space J between the free ends of the cantilever beams 16B and 16C and the space J between the free ends of the cantilever beams 34B and 34C are provided as equipment piping. It is a space for 20. In this way, by passing the facility piping 20 for building equipment through the space J, the ceiling back space H can be lowered and the necessary living height CH1 can be secured as compared with the conventional configuration in which the facility piping is passed under the beam. Even so, the height of the structure can be reduced. Furthermore, the piping space for building equipment and the equipment space for production equipment can be clearly separated.

In addition, the X-axis direction and the Y-axis direction in FIG. 1 are not limited to the direction of this embodiment, What is necessary is just to determine freely with a structure.
In the present embodiment, the columns 12A, 12B and the like have been described as precast concrete columns, but are not limited thereto, and may be reinforced concrete columns, steel columns, or the like.

(Second Embodiment)
As shown in FIG. 7A, in the structure 40 according to the second embodiment, the slab described in the first embodiment is not provided in the space J2 between the free ends of the cantilevers 16B and 16C. The point is different. The difference from the first embodiment will be mainly described.
The pair of cantilevers 16B and 16C support the slab 42. However, the slab 42 is not constructed on the space J2 between the free ends of the cantilevers 16B and 16C. The space J2 in which the slab 42 is not provided can be used as, for example, a blow-off space. Thereby, a blow-by space can be easily provided. Moreover, although illustration is abbreviate | omitted, the space J2 can also be made into the installation space of an elevator. Thereby, installation of an elevator becomes easy.

As shown in FIG. 7B, the connection between the column 12B and the cantilever beam 16B and the connection between the column 12C and the cantilever beam 16C are not rigid connections, but pin connections. The structure which provides the diagonal member 48 may be sufficient.
Further, as shown in FIG. 8A, the ceiling plate 22 can be fitted into the space J2, and the ceiling height CH3 from the floor finish surface 46 can be partially increased compared to the surrounding ceiling height CH1. Further, as shown in FIG. 8B, a beam 24A is provided on the opposite side of the cantilever 16B of the column 12B, and a beam 24B is provided on the opposite side of the cantilever 16C of the column 12C. It constitutes the frame. Thereby, the protruding dimension of the cantilever beams 16B and 16C can be increased.
Other configurations are the same as those of the first embodiment, and a description thereof will be omitted.

(Third embodiment)
As shown in the cross-sectional view of FIG. 9, the structure 50 according to the third embodiment is different from the first embodiment in that a space J is provided between the pillars 12A, 12B, 12C, and 12D. Is different. The difference will be mainly described.

Between the column 12A and the column 12B, cantilever beams 16E1 and 16E2 are provided to face each other, and in the space J, facility piping 20 is disposed. Thereby, the ceiling back space between the pillar 12A and the pillar 12B can be made low.
On the other hand, between the pillars 12B and 12C, cantilever beams 16B and 16C are provided to face each other. In the space J, the ceiling plate 22 is fitted by cutting out the slab 18, and the space J is defined as a ceiling space. ing. Thereby, the ceiling between the pillar 12B and the pillar 12C can be partially increased.
Further, between the pillars 12C and 12D, cantilever beams 16F1 and 16F2 are provided to face each other. In the space J, a ceiling plate 22 is provided to the lower surface of the slab 18, and the space J is defined as a ceiling space. Yes. Thereby, the ceiling between the pillar 12C and the pillar 12D can be partially increased.
Other configurations are the same as those of the first embodiment, and a description thereof will be omitted.

10, 20, 40 Structure 12 Column 12B One column 12C Other column 14 Column 14B One column 14C Other column 16 Cantilever 18 Slab (floor plate)
20 Equipment piping 21 Equipment space 24 Beam (first beam)
26 Beam (first beam)
28 Cantilever beam 30 beam (second beam)
32 beam 34 cantilever beam

Claims (5)

A group of columns arranged in parallel in a first direction and a second direction orthogonal to the first direction;
A pair of cantilevers that are jumped from one column of the column group and another column in the first direction of the one column toward the other column;
A floorboard supported by the cantilever;
A structure having   The first column is provided on the one column and the other column in the first direction, and the first beam is bridged between the column on the opposite side to the protruding direction of the cantilever beam. The structure according to claim 1.   The structure according to claim 2, wherein at least one of the columns supporting the first beam is provided with a cantilever beam that jumps in the first direction on the side opposite to the first beam.   Between the one column and the one column in the second direction of the one column, and between the other column and another column in the second direction of the other column. The second beams are respectively bridged in the second direction, and a pair of cantilever beams are ejected in the first direction from the second beam toward the opposing second beam. The structure according to any one of claims 1 to 3, wherein the floor plate is supported by a holding beam. The structure according to claim 4, wherein the space between the free ends of the cantilever and between the free ends of the cantilever is a facility space.

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