JP7560385B2 - Architecture - Google Patents

Description

The present invention relates to a building whose underground structure comprises a column-beam rigid frame structure and an underground exterior wall.

Patent Document 1 shows a building in which the underground structure comprises a column-beam rigid frame structure and an existing underground exterior wall 15 (underground exterior wall), and the existing underground exterior wall 15 is installed outward of the underground outer peripheral column 12a (outer peripheral column) that is the outermost of the column-beam rigid frame structure in a plan view. Patent Document 2 shows a building in which the underground structure comprises a column-beam rigid frame structure and a retaining wall 21 (underground exterior wall), and the retaining wall 21 is installed outward of the outermost peripheral column of the column-beam rigid frame structure in a plan view.

JP 2018-021320 A JP 2008-184865 A

However, in the building of Patent Document 1, the underground outer perimeter columns 12a are formed integrally with the existing underground outer wall 21, so the existing underground outer wall 15, which is subjected to earth pressure from the ground, can be supported by a column-beam rigid frame. However, in such a building, if a vertical relative deformation difference caused by consolidation settlement occurs in the column-beam rigid frame, shear failure may occur in the existing underground outer wall 15, which is formed integrally with the underground outer perimeter columns 12a.

In the building of Patent Document 2, the deck 14 is joined to the inner surface of the retaining wall 21, so the deck 14 can support the retaining wall 21, which is subjected to earth pressure from the ground. However, in the building of Cited Document 2, the relationship between the deck 14 and the column-beam rigid frame is not clearly stated, and if a vertical relative deformation difference due to consolidation settlement occurs in the column-beam rigid frame, there is a possibility that shear failure will occur in the retaining wall 21 to which the deck 14 abuts.

In this way, by providing the underground structure with underground exterior wall support parts such as underground outer perimeter columns fixed to the column-beam rigid frame, the underground exterior walls that are subjected to the earth pressure of the ground can be supported by the column-beam rigid frame. However, if a vertical relative deformation difference due to consolidation settlement occurs in the column-beam rigid frame, shear failure may occur in the underground exterior wall that the underground exterior wall support parts abut.

In light of this situation, the main objective of the present invention is to provide a building that can be supported by underground exterior walls that are subject to earth pressure, while preventing shear failure in the underground exterior walls even if a vertical relative deformation difference occurs in the column-beam rigid frame structure.

The first characteristic configuration of the present invention is a building in which an underground structure includes a column-beam rigid frame and an underground exterior wall,
The underground exterior wall is installed on the outer side of the outermost peripheral column of the column-beam rigid frame in a plan view,
An underground outer wall support portion is provided to support the underground outer wall, the underground outer wall being in contact with an inner surface of the underground outer wall and receiving earth pressure from the ground on the outer side;
The underground exterior wall support portion is fixed to the column-beam rigid frame and has a contact support surface that abuts against the inner surface of the underground exterior wall in a state allowing the underground exterior wall to move up and down.

With this configuration, the underground exterior wall support part is fixed to the column-beam rigid frame and the abutment part of the underground exterior wall support part abuts against the inner surface of the underground exterior wall, so that the underground exterior wall support part can also bear part of the earth pressure acting on the underground exterior wall. Furthermore, since the abutment support surface of the underground exterior wall support part abuts against the inner surface of the underground exterior wall in a state that allows the underground exterior wall to move up and down, when a vertical relative deformation difference due to consolidation settlement occurs in the column-beam rigid frame, the abutment support surface of the underground exterior wall support part and the underground exterior wall move relative to each other in the vertical direction, preventing shear failure in the underground exterior wall.

The second characteristic feature of the present invention is that the underground exterior wall support portion has a vertical abutment support surface provided along the outer surface of the outer perimeter column as the abutment support surface.

According to this configuration, the abutment support surface has a vertical abutment support surface provided along the outer perimeter column, so that the underground exterior wall support section abuts against the underground exterior wall over a wide area in the direction along which the outer perimeter column runs, making it possible to bear part of the earth pressure acting on the underground exterior wall.

The third characteristic feature of the present invention is that the outer perimeter columns are columns having cross H-shaped steel with flange surfaces arranged on all four sides, and one of the flange surfaces on each side is used as the vertical abutment support surface.

According to this configuration, by using the flange surface of the cross H-shaped steel of the outer perimeter column as the vertical abutment support surface, there is no need to provide a dedicated member for forming the vertical abutment support surface, or the amount of dedicated member for forming the vertical abutment support surface can be reduced, simplifying the configuration of the underground exterior wall support section.

The fourth characteristic feature of the present invention is that the underground exterior wall support section includes a cross member that is horizontally installed between the outer surfaces of adjacent outer perimeter columns, and has a horizontal abutment support surface that is provided along the outer surface of the cross member as the abutment support surface.

According to this configuration, the abutment support surface has a horizontal abutment support surface provided along the outer surface of the cross member, so that the underground exterior wall support section abuts against the underground exterior wall over a wide area in the direction along which the cross member runs, making it possible to bear a portion of the earth pressure acting on the underground exterior wall.

Enlarged side view of the main part of the underground structure A cross-sectional view of the lower column and the basement exterior wall in FIG. 1 showing the upper column and the underground outer wall B-B cross section

An embodiment of a building according to the present invention will be described with reference to the drawings.
As shown in Fig. 1, a building 1 comprises an underground structure 2, which comprises a column-beam rigid frame structure 3 and an underground exterior wall 4. The underground structure 2 will be described below, with the side on which the underground exterior wall 4 exists relative to the column-beam rigid frame structure 3 being referred to as the outer side X1 and the opposite side as the inner side X2 in the inner-outer direction X perpendicular to the vertical direction Z. The surface facing the outer side X1 is referred to as the outer surface, and the surface facing the inner side X2 is referred to as the inner surface.

The building 1 is provided with an underground exterior wall support part 5 that abuts against an exterior wall inner surface F1, which is the inner surface of the underground exterior wall 4. The underground exterior wall support part 5 is fixed to a column-beam rigid frame 3. The ground G is present on the outer side X1 of the underground exterior wall 4, and the underground exterior wall 4 is subjected to earth pressure from the ground G on the outer side X1, and the underground exterior wall support part 5 supports the underground exterior wall 4 that is subjected to earth pressure from the ground G.
The underground exterior wall support portion 5 has an abutment support surface F2 that abuts against the exterior wall inner surface F1 in a state that allows vertical movement of the underground exterior wall 4. In this embodiment, the abutment support surface F2 of the underground exterior wall support portion 5 abuts against the exterior wall inner surface F1 in a state that allows vertical and lateral movement of the underground exterior wall 4, and the underground exterior wall support portion 5 and the underground exterior wall 4 are in a state in which they can move relatively along the vertical direction Z and the lateral direction Y.

The column-beam rigid frame structure 3 is composed of multiple columns 6 and multiple beams 7. Among the multiple columns 6 constituting the column-beam rigid frame structure 3, the column 6 located on the outermost side X1 is the outermost peripheral column 10 of the column-beam rigid frame structure 3 in a plan view, and the peripheral column 10 is adjacent to the inner side X2 of the underground exterior wall 4.

As shown in FIG. 2, the peripheral column 10 is a column having cross H-shaped steel 13 with flange surfaces F3 arranged on all four sides. In this embodiment, as shown in FIG. 1 to FIG. 3, the peripheral column 10 has a lower column portion 10A rising from the basement floor slab 11 and an upper column portion 10B extending upward from the lower column portion 10A, and as shown in FIG. 2, of the lower column portion 10A and the upper column portion 10B, only the lower column portion 10A has cross H-shaped steel 13 with flange surfaces F3 arranged on all four sides.

As shown in FIG. 2, the lower column section 10A includes a cross H-shaped steel 13, a column body 14, and a concrete section 20. The cross H-shaped steel 13 has flanges joined to both ends of each web that crosses in a cross shape. The column body 14 is formed in a square tube shape and is arranged to surround the intersection of the webs of the cross H-shaped steel 13. A temporary formwork 15 is installed between the flanges of the cross H-shaped steel 13, and a space S surrounded by the flanges of the cross H-shaped steel 13 and the formwork 15 is formed in the outer peripheral column 10. The concrete section 20 is formed by filling the space S formed in the outer peripheral column 10 with concrete while reinforcing bars 19 are installed in the space S.

The upper column 10B includes only the column 14 out of the cross H-shaped steel 13, the column 14, and the formwork 15. The upper column 10B also includes a bracket 21 having an abutment support surface F2 facing the outer side X1. In this embodiment, the bracket 21 is composed of a frame 17 made of H-shaped steel and a plate-shaped abutment plate 18. The frame 17 is joined to the surface of the column 14 facing the outer side X1. The abutment plate 18 is joined to the end of the outer side X1 of a pair of flanges in the frame 17.

As shown in Figures 2 and 3, the beams 7 of the column-beam rigid frame 3 are installed across adjacent columns 6 (not shown). The beams 7 installed across a pair of peripheral columns 10 aligned in the horizontal direction Y are regarded as peripheral beams 22, and cross members 24 are installed across a pair of peripheral columns 10 aligned in the horizontal direction Y on the outer side X1 of the position where the peripheral beams 22 are located.

As shown in Figure 2, for the lower column portion 10A of the peripheral column 10, the left end of the peripheral beam 22 is joined to the flange surface F3 facing to the right of the lower column portion 10A on the left side, and the right end of the peripheral beam 22 is joined to the flange surface F3 facing to the left of the lower column portion 10A on the right side.
The flange surface F3 facing the lateral direction Y of the lower column portion 10A is located in the center of the lower column portion 10A in the inward/outward direction X, and the outer peripheral beam 22 is joined to the center of the lower column portion 10A in the inward/outward direction X.

In addition, in the inward/outward direction X, on the outer side X1 of the outer peripheral beam 22, a lower cross member 24A is erected as a cross member 24 across a pair of lower column portions 10A arranged in the horizontal direction Y. In this embodiment, the lower cross member 24A is composed of a cross steel 25 made of an H-shaped steel and a plate-shaped cross plate 26. The cross steel 25 of the lower cross member 24A is joined to the end of the outer side X1 of the cross H-shaped steel 13, thereby joining the lower cross member 24A to the lower column portion 10A on the outer side X1 of the outer peripheral beam 22. In addition, the cross plate 26 of the lower cross member 24A is joined to the end of the outer side X1 of the pair of flanges of the cross steel 25.

As shown in FIG. 3, an upper cross member 24B is installed as a cross member 24 across a pair of upper columns 10B arranged in the horizontal direction Y on the outer side X1 of the outer peripheral beam 22. In this embodiment, the upper cross member 24B is composed of a cross steel 25 and a cross plate 26, similar to the lower cross member 24A. The cross steel 25 of the upper cross member 24B is joined to the end of the outer side X1 of the bracket 21, thereby joining the upper cross member 24B to the upper column 10B on the outer side X1 of the outer peripheral beam 22.

The underground exterior wall 4 is installed on the outer side X1 of the outermost peripheral column 10 of the column-beam rigid frame structure 3 in plan view. The outer side X1 of the underground exterior wall 4 is the ground G, and the earth pressure of this ground G acts on the underground exterior wall 4, and the underground exterior wall 4 serves as a retaining wall to support the earth pressure of the ground G. The underground exterior wall 4 is made of, for example, reinforced concrete. The underground exterior wall 4 is constructed so as to rise from the outer periphery of the underground base slab 11.

As shown in Figures 2 and 3, the underground exterior wall support part 5 has a vertical abutment support surface F4 provided along the outer surface of the outer perimeter column 10 as the abutment support surface F2. In addition, the underground exterior wall support part 5 has a horizontal abutment support surface F5 provided along the outer surface of the cross member 24 as the abutment support surface F2.

To explain further, the underground exterior wall support portion 5 is provided with sliding members 27 with a small coefficient of friction. The sliding members 27 include a first sliding member 27A fixed to the flange surface F3 facing the outer side X1 of the cross H-shaped steel 13, a second sliding member 27B fixed to the vertical abutment surface F6 facing the outer side X1 of the abutment plate 18 of the bracket 21, a third sliding member 27C fixed to the lower horizontal abutment surface F7 facing the outer side X1 of the cross plate 26 of the lower cross member 24A, and a fourth sliding member 27D fixed to the upper horizontal abutment surface F8 facing the outer side X1 of the cross plate 26 of the upper cross member 24B.

The surface facing the outward side X1 of the first sliding member 27A, the surface facing the outward side X1 of the second sliding member 27B, the surface facing the outward side X1 of the third sliding member 27C, and the surface facing the outward side X1 of the fourth sliding member 27D abut against the inner surface F1 of the outer wall and correspond to the abutment support surface F2.
In addition, the surface facing the outward side X1 of the first sliding material 27A and the surface facing the outward side X1 of the second sliding material 27B are vertically elongated surfaces that are longer in the vertical direction Z than in the horizontal direction Y, and are provided along the outer surface of the outer peripheral column 10, and correspond to the vertical abutment support surface F4.
In addition, the surface facing the outward side X1 of the third sliding member 27C and the surface facing the outward side X1 of the fourth sliding member 27D are horizontally elongated surfaces that are longer in the horizontal direction Y than in the vertical direction Z, and are provided along the outer surface of the cross member 24, and correspond to the lateral abutment support surface F5.

The abutment support surface F2 provided for the lower column portion 10A is formed in a lattice pattern by a surface facing the outer side X1 of the first sliding member 27A (vertical abutment support surface F4) and a surface facing the outer side X1 of the third sliding member 27C (horizontal abutment support surface F5).

The abutment support surface F2 facing the outer side X1 of the sliding material 27 of the underground exterior wall support portion 5 abuts against the outer wall inner surface F1, allowing the underground exterior wall support portion 5 to bear part of the earth pressure acting on the underground exterior wall 4 while allowing relative vertical and lateral movement between the underground exterior wall 4 and the underground exterior wall support portion 5. The sliding material 27 is made of a material having a friction coefficient smaller than a set value (e.g., 0.3), for example, and in this embodiment is made of a resin material such as a fluororesin (specifically, Teflon (registered trademark)).

[Another embodiment]
Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

(1) In the above embodiment, the abutment support surface F2 is described as having a vertical abutment support surface F4 and a horizontal abutment support surface F5. However, the configuration of the abutment support surface F2 may be changed as appropriate, and the abutment support surface F2 may be configured to have only one of the vertical abutment support surface F4 and the horizontal abutment support surface F5.

(2) In the above embodiment, the vertical abutment support surface F4 is formed by a sliding member 27 fixed to the flange surface F3 of the cross H-shaped steel 13 or the vertical abutment surface F6 of the frame body 17. However, the configuration for forming the vertical abutment support surface F4 may be changed as appropriate. For example, the vertical abutment support surface F4 may be formed by a sliding member 27 fixed to the flange surface of an H-shaped steel in a vertical position in which a pair of flanges are aligned in the inward and outward direction X.

(3) In the above embodiment, the configuration in which the lateral abutment support surface F5 is formed by the sliding member 27 fixed to the cross plate 26 has been described as an example. However, the configuration in which the lateral abutment support surface F5 is formed may be changed as appropriate. For example, the lateral abutment support surface F5 may be formed by the sliding member 27 fixed to the flange surface of an H-shaped steel in a horizontal position in which a pair of flanges are aligned in the inward and outward direction X.

(4) In the above embodiment, an example has been described in which the sliding member 27 forming the abutment support surface 2F abuts against the outer wall inner surface F1, thereby allowing the underground outer wall 4 to move relative to the underground outer wall support 5 in the vertical direction Z and the horizontal direction Y. However, the present invention is not limited to such a configuration. For example, a rotating body such as a roller or ball forming the abutment support surface F2 may be abutted against the outer wall inner surface F1, allowing the underground outer wall 4 to move relative to the underground outer wall support 5 in at least one of the horizontal direction Y and the vertical direction Z.

1 Building 2 Underground structure 3 Column-beam rigid frame 4 Underground exterior wall 5 Underground exterior wall support 10 Peripheral column 13 Cross H-shaped steel 26 Horizontal member F1 Exterior wall inner surface (inner surface of underground exterior wall)
F2 Contact support surface F3 Flange surface F4 Vertical contact support surface F5 Horizontal contact support surface

Claims (4)

A building in which the underground structure is provided with a column-beam rigid frame and an underground exterior wall,
The underground exterior wall is installed on the outer side of the outermost peripheral column of the column-beam rigid frame in a plan view,
An underground outer wall support portion is provided to support the underground outer wall, the underground outer wall being in contact with an inner surface of the underground outer wall and receiving earth pressure from the ground on the outer side;
The underground exterior wall support portion is fixed to the column-beam rigid frame structure, and has a contact support surface that abuts against the inner surface of the underground exterior wall in a state allowing the underground exterior wall to move up and down. The building according to claim 1, wherein the underground exterior wall support portion has a vertical abutment support surface provided along the outer surface of the outer perimeter column as the abutment support surface. The building described in claim 2, in which the outer perimeter columns are columns having cross H-shaped steel with flange surfaces arranged on all four sides, and one of the flange surfaces on each side serves as the vertical abutment support surface. The building according to any one of claims 1 to 3, wherein the underground exterior wall support section includes a horizontal member that is horizontally supported between the outer surfaces of adjacent perimeter columns, and the abutment support surface includes a horizontal abutment support surface that is provided along the outer surface of the horizontal member.

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