JP3851719B2 - Building foundation blocks - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foundation block that supports a structural member of a building, and more particularly to a foundation block for a building that is optimally used for a foundation block for a house in a cold region.
[0002]
[Prior art]
As shown in FIG. 11, a conventional building foundation block A is composed of an upright frame B supporting a structural member M of a building and a horizontal footing C provided at the lower end of the frame B. The fabric foundation is constructed by continuously laying it under the outer periphery of the building and the partition part.
[0003]
However, especially in areas such as Hokkaido and Tohoku where the depth of freezing of the ground is deep, when the soil below the fabric foundation freezes, the fabric foundation is pushed up by the expansion force during freezing, and after the frozen soil melts, the fabric foundation rises. There is a risk of it. Therefore, the depth of the conventional cloth foundation is about 60 cm, but in the Hokkaido and Tohoku regions, the footing part C is installed at a position deeper than the freezing depth Z, and the root is deeply inserted.
[0004]
[Problems to be solved by the invention]
In this way, as a measure for preventing frost heave, the deepening of the deepening is performed, but as shown in FIG. 10, the amount of soil S to be buried on the footing part C when the deepening is applied. Will also increase. However, it is necessary to design the foundation so that the ground pressure does not exceed the design strength. In order to satisfy this condition, in FIG. 11, the height H of the housing part B must be increased, and the width W of the footing part C that supports the vertical load must be increased. As a result, the size of each foundation block A is increased and the weight is increased, and the ground excavation depth when the foundation block A is laid is increased and the amount of excavated soil is increased. There is a problem such as
[0005]
[Means for Solving the Problems]
The present invention has been made in order to solve the above-described conventional problems. The footing portion provided below the base block is made hollow to reduce the weight of the block, and the exhaust air for indoor heating ( The purpose is to provide a structure that can prevent the surrounding ground from freezing by passing warm air and eliminate the floating of the foundation. , A basic block integrally formed with a rectangular footing section located at the lower part of the housing part and projecting on both sides in the width direction, and forming a hollow part through which exhaust air from room heating is passed inside the footing part Then, there is also a building basic block or the like characterized in that the hollow portion is configured to communicate with the outside through openings formed on both end faces of the footing portion.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. In FIG. 1, reference numeral 1 denotes a building basic block, and a housing portion 2 that supports a structural member M of a building, and a lower portion of the housing portion 2. It is formed from a footing portion 3 having a rectangular cross section that is located and projects on both sides in the width direction (front-rear direction in the drawing). Inside the footing portion 3 is the length direction (left-right direction in the drawing). A hollow portion 4 is formed over the entire length. Reference numeral 5 denotes an opening, which is formed at both left and right ends of the footing part 3. The hollow part 4 communicates with the outside through the left and right openings 5, 5.
[0007]
2 to FIG. 5 is a modified structure of the building foundation block 1, the foundation block shown in FIG. 2 is at the corner, the one shown in FIG. 3 is at the three-intersection, and FIG. What is shown is used for each of the four intersections, and its basic configuration is the same as that of the basic block 1 shown in FIG.
[0008]
That is, the building basic block 1A shown in FIG. 2 includes a housing portion 2A that is bent in an L shape in plan view (hereinafter referred to as an L shape), and a lower portion of the housing portion 2A. The footing portion 3A has an L-shaped transverse cross-sectional shape projecting on both sides and is rectangular, and an L-shaped hollow portion 4A is formed inside the footing portion 3A. Reference numerals 5A denote openings, which are formed at both ends of the footing part 3A. The hollow part 4A communicates with the outside through the openings 5A and 5A.
[0009]
Further, the building foundation block 1B shown in FIG. 3 is located in a T-shaped (hereinafter referred to as T-shaped) housing portion 2B in plan view, and is located at a lower portion of the housing portion 2B and protrudes from both sides in the width direction. A footing portion 3B having a T-shaped transverse cross section is formed, and a T-shaped hollow portion 4B is formed inside the footing portion 3B. Reference numeral 5B denotes an opening, which is formed at both end portions of one footing portion 3B and one end portion of the footing portion 3B orthogonal thereto, and the hollow portion 4B communicates with the outside through the three opening portions 5B. Yes.
[0010]
Further, the building basic block 1C shown in FIG. 4 has a cruciform (hereinafter referred to as “cross”) housing 2C in plan view, and is located at the lower portion of the cascading 2C and projects to both sides in the width direction. The cross-shaped rectangular cross-sectional footing part 3C is formed, and a cross-shaped hollow part 4C is formed inside each footing part 3C. Reference numerals 5C denote openings, which are formed at both ends of the front footing part 3C and at both ends of the footing part 3C orthogonal thereto, respectively, and the hollow part 4C communicates with the outside through the four openings 5C. ing.
[0011]
5 is the building basic block 1 shown in FIG. 1 provided with a single air inlet or exhaust port. The building basic block 11 has one side in the width direction of the housing 12 (see FIG. 5). When the bulging portion 14 extending from the upper surface of the footing portion 13 to the upper surface of the housing portion 12 is formed on the middle front side and the vertical hole 15 is formed inside the bulging portion 14, the lower end of the vertical hole 15 Is communicated with a hollow portion 16 formed in the footing portion 13 over its entire length. The upper end of the vertical hole 15 forms an intake port or exhaust port 17 that opens on the upper surface of the housing 12, and the hollow portion 16 communicates with the outside through the vertical hole 15, the intake port or the exhaust port 17. is doing.
[0012]
Furthermore, what is shown in FIG. 6 is the building basic block 1 shown in FIG. 1 provided with an air inlet and an air outlet, respectively. The building basic block 21 is provided on both front and rear sides in the width direction of the housing portion 22. A pair of front and rear bulging portions 24 and 25 extending from the upper surface of the footing portion 23 to the upper surface of the housing portion 22 are provided with their positions shifted in the left-right direction, and the vertical holes 26 and 27 are provided inside the bulging portions 24 and 25, respectively. In addition, the upper ends of the vertical holes 26 and 27 form either the intake port 28 or the exhaust port 29, respectively.
[0013]
The lower ends of the vertical holes 26 and 27 communicate with a hollow portion 30 formed in the footing portion 23 over the entire length thereof, and the hollow portion 30 is provided at an intermediate portion between the vertical holes 26 and 27. It is partitioned into left and right by a partition wall 31. Accordingly, one vertical hole 26 communicates with a hollow portion 30 extending to the left side, and the other vertical hole 27 communicates with a hollow portion 30 extending on the right side opposite to this, and the upper end of one vertical hole 26 communicates with the intake port 28. The upper end of the other vertical hole 27 is configured to form an exhaust port 29, respectively.
[0014]
Next, in order to explain the method of use, as shown in FIG. 7, each of the building foundation blocks 1, 1 </ b> A, and 21 is combined, and the fabric foundation S is constructed by continuously laying each opening together. Build up. In this case, as shown in FIG. 9, the crushed stones K are laid on the ground on which each block is laid, and then the concrete L is cast on the ground to form the foundation R, and each block is placed on the foundation R. 1, 1A, and 21 are installed in combination, and then backfilling soil is applied to the footing unit 3 to adjust the height of the ground surface G, and a building is constructed on the fabric foundation S.
[0015]
Then, warm air is blown into the hollow portion 30 of the building foundation block 21 through a hole provided in the floor of the building room through the air inlet 28 and the vertical hole 26 located inside the cloth foundation S. And after passing through each hollow part of the cloth foundation S in the counterclockwise direction and making a round, the cooled air is discharged through the vertical hole 27 and the exhaust port 29 located outside the foundation block 21. In this case, since the inside of the hollow portion 30 of the foundation block 21 is partitioned left and right by the partition wall 31, the warm air sucked from the intake port 28 and the cold air discharged from the exhaust port 29 do not mix.
[0016]
Furthermore, when the building is large, as shown in FIG. 8, a plurality of foundation blocks 11 having one intake port or one exhaust port 17 are laid at a desired interval, and warm air is supplied to the ventilated with a lowered temperature. It is also possible to do.
[0017]
Here, in the conventional basic block A shown in FIG. 11, the height of the footing portion C (
(Thickness) is about 0.15 m, but in the basic block of the present invention, it is desirable that the thickness of the footing portion be at least about 0.6 m. This is because in order to transmit sufficient warm air to the ground, the hollow itself must be formed large and a large amount of warm air must be passed through to heat the concrete itself.
[0018]
Thus, when the room is heated regularly in the winter, each base block is warmed by the warm air while the warm air enters the hollow portion of the fabric foundation S from the air inlet and is exhausted from the exhaust port. It is done. And since it is "it is hard to warm and it is hard to cool" as a characteristic of concrete, the ground around a foundation block is warmed at night and the ground can be prevented from freezing.
[0019]
【The invention's effect】
As described above, the foundation block according to the present invention forms a hollow part through which exhaust air for room heating passes inside the footing part provided below the foundation block, and passes warm air through the hollow part to surround the foundation block. This prevents the ground from freezing and prevents the foundation from lifting. Also, by forming a hollow part through which the indoor heating exhaust is passed inside the footing part, the weight of the foundation block is reduced, so that the thickness of the footing part can be increased compared to the conventional case and deposited on the footing part. The amount of soil is reduced. Therefore, since the load applied to the upper surface of the footing portion is reduced, there are various effects that the ground pressure can be suppressed within the design value proof stress without increasing the size of the foundation block.
[Brief description of the drawings]
FIG. 1 is a perspective view of a foundation block according to the present invention.
FIG. 2 is a cross-sectional view taken along the arrow line in the same drawing as the perspective view of another embodiment.
FIG. 3 is a cross-sectional view taken along the arrow line of FIG.
FIG. 4 is a cross-sectional view taken along the line haha in FIG.
FIG. 5 is a cross-sectional view of the Nini line and the Hooch line in the same drawing as the perspective view of another embodiment.
FIG. 6 is a cross-sectional view taken along the arrows of the hae line and the tote line in the same drawing as the perspective view of the other embodiment.
FIG. 7 is a perspective view showing a use state of a foundation block according to the present invention.
FIG. 8 is a perspective view showing another use state of the foundation block according to the present invention.
FIG. 9 is a cross-sectional explanatory view showing a laying state of a foundation block according to the present invention.
FIG. 10 is a cross-sectional view showing a conventional foundation block laid state.
FIG. 11 is a perspective view of a conventional basic block.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base block 2 Housing | casing part 3 Footing part 4 Hollow part 5 Opening part 14 Expansion part 15 Vertical hole 17 Inlet or exhaust port

Claims (4)

  A basic block integrally formed with a housing part for supporting a structural member of a building and a footing part having a rectangular cross-section located at the lower part of the housing part and projecting on both sides in the width direction. A building foundation characterized in that when a hollow portion for passing exhaust air for indoor heating is formed in the interior, the hollow portion is communicated with the outside through openings formed on both end faces of the footing portion. block.   A basic block having a L-shape, a T-shape, or a cross shape in plan view, and a hollow portion through which exhaust for indoor heating is formed inside the footing portion is formed on both end surfaces, 3 end surfaces, or 4 end surfaces of the footing portions, respectively. 2. The building foundation block according to claim 1, wherein the building is configured to communicate with the outside through an opening.   When a bulging portion extending from the upper surface of the footing portion to the upper surface of the housing portion is formed on one side in the width direction of the housing portion and a vertical hole is formed therein, the lower end of the vertical hole is located inside the footing portion. 2. The building basic block according to claim 1, wherein the building base block communicates with the formed hollow portion through which exhaust air is passed, and the upper end forms an intake port or an exhaust port that opens to an upper surface of the housing unit. .   When a pair of front and rear bulging portions extending from the upper surface of the footing portion to the upper surface of the housing portion are shifted in the left-right direction on both sides in the width direction of the housing portion, and vertical holes are formed in the inside, respectively, The lower end of each vertical hole communicates with either the left or right of the hollow part through which the indoor heating exhaust in the footing part partitioned right and left by a partition wall provided at the boundary part of both vertical holes, and the upper end is on the upper surface of the housing part 2. The building foundation block according to claim 1, wherein either one of an air inlet or an air outlet is formed.

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