JPH10317524A - Spacer structure for building foundation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make fine adjustment of the substantial thickness of each spacer block easily and accurately. SOLUTION: The spacer structure for a building foundation includes a plurality of spacer blocks 10 installed at certain intervals between a foundation and a sill and level plates 20 formed thin as having approx. the same surface shape as spacer blocks 10. Each spacer block 10 and level plate 20 are provided with bolt holes 12 and 22 in the form of long hole which are penetrating across the thickness and admit loose penetration of respective anchor bolt. In the center about the longitudinal direction, each level plate 20 is provided with a slit 26 which is for dividing the level plate 20 into a pair of half pieces and is extended across the width so as to cross the bolt hole 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spacer structure interposed between an architectural foundation and a base.

[0002]

2. Description of the Related Art In a conventional wooden building, for example,
As shown in Japanese Patent Application Laid-Open No. 4-181721, a mortar layer for providing a horizontal surface is provided on a concrete foundation called a cloth foundation, and a rectangular plate-like spacer made of a hard resin or a plastic composite material is appropriately provided thereon. A wooden base is fixed on these spacers, and columns and beams are mounted on the base. The above spacers form a gap between the mortar and the base to secure air permeability, and the surface thereof is formed with an appropriate number of ventilation grooves to prevent moisture of the wooden base and prevent corrosion. ing.

However, in such a structure, it is difficult to level the upper surface of the spacers over a plurality of spacers, and when the base is placed thereon, a gap may be generated between the spacers and the base. . When the foundation and the base are fastened with the anchor bolts while leaving such a gap as it is, a problem occurs in that the base is bent or bent and fixed.

Therefore, in the structure disclosed in Japanese Utility Model Laid-Open No. 54-181708, the spacer is formed by diagonally dividing the spacer into two parts in the vertical direction, and the inclined surfaces are formed with saw-toothed irregularities that mesh with each other. By displacing them in the longitudinal direction, the thickness can be finely adjusted.

[0005] However, in order to shift the pair of opposing spacers in the longitudinal direction, the base once mounted thereon must be lifted by the height of the saw-toothed irregularities, and the adjustment work is very complicated. Becomes In addition, since it is necessary to use the spacers in pairs, the number of parts increases, and the maintenance management becomes complicated.

Meanwhile, in an actual construction site, an appropriate piece of wood or the like is inserted into a gap formed between the spacer and the base. This is because it can fill the gap very easily, but in general, the pieces of wood to be sandwiched are small and soft, so the required hardness of the spacer cannot be obtained, and the decrease in the bonding strength between the foundation and the base is reduced. There is a possibility of inviting. In addition, there is a problem in that the ventilation groove provided in the spacer is closed by a sandwiched piece of wood or the like, whereby the ventilation is reduced and the base is corroded.

Also, since anchor bolts for fastening the foundation and the base project from the upper surface of the concrete foundation and penetrate the inside of the spacer and the base, when inserting a piece of wood or the like into the gap between the spacer and the base. In addition, the anchor bolt hinders, and a piece of wood or the like can be provided only on a part of the upper surface of the spacer. As a result, the contact area with the base is reduced at the portion where the wood piece or the like is sandwiched, and the base cannot be stably supported.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a novel spacer structure which solves the above-mentioned problems.

[0009]

SUMMARY OF THE INVENTION Therefore, a spacer structure for a building foundation according to the invention of claim 1 is provided with an appropriate space between the foundation and the foundation so as to form a gap between the two. A plurality of spacer blocks are arranged in a thin plate shape having substantially the same surface shape as that of the spacer block, and one or more spacer blocks are stacked on the spacer block so as to finely adjust the substantial thickness of the spacer block. A level plate to be used, and in each of the spacer block and the level plate, an elongated bolt hole through which an anchor bolt projecting from the upper surface of the foundation penetrates is formed in the thickness direction, and At the central portion in the longitudinal direction of the plate, a dividing line for dividing the plate into a pair of pieces is formed so as to extend in the width direction so as to cross the bolt hole. It is characterized.

In other words, the level plate can be divided into two along the dividing line, and this dividing line may be, for example, a partially grooved groove, or intermittently. It may be a slit formed with ribs.

According to a second aspect of the present invention, at least one ventilation groove extending in the longitudinal direction is formed on the surface of the space block facing the base, and the level plate corresponds to the ventilation groove. It is characterized in that the ventilation hole or the step is formed to extend in the longitudinal direction.

According to a third aspect of the present invention, the level plate is slidable in a longitudinal direction in a state where the step portion is fitted in the ventilation groove of the spacer block.

According to a fourth aspect of the present invention, the thickness of the level plate is 1/5 to 1/2 of the thickness of the spacer block.
It is characterized in that it is set to 0.

According to a fifth aspect of the present invention, a large number of projections are formed on the upper surface of the base plate side of the spacer block and the level plate, and a large number of concave portions corresponding to the large number of projections are formed on a lower surface of the level plate. Is formed.

According to a sixth aspect of the present invention, there is provided a spacer structure for a building foundation, wherein a plurality of spacer blocks are provided at appropriate intervals between the building foundation and the base so as to form a gap between the two. And a level plate which is formed in a thin plate shape having substantially the same surface shape as the spacer block, and is used by overlapping one or more on the spacer block so as to finely adjust the substantial thickness of the spacer block. In the spacer block, a bolt hole through which an anchor bolt protruding from the upper surface of the foundation passes through is formed in the thickness direction,
And the above-mentioned level plate is divided and constituted by a pair of pieces having a shape obtained by dividing the level plate into two parts at a longitudinal center portion,
Each element is characterized in that a cutout is formed at one end where the anchor bolt can enter.

[0016]

According to the first aspect of the present invention, fine adjustment of the substantial thickness of the spacer block can be easily and accurately performed by superimposing an appropriate number of level plates on the spacer block. , Their upper surfaces can be easily leveled over a plurality of spacer blocks.

Here, since the level plate has almost the same surface shape as the spacer block, the one in which the level plate is overlaid on the spacer block has a surface shape in contact with the base although its thickness changes. Since there is almost no influence, the base can be stably supported as in the case where the level plate is not provided.

In particular, when a base is placed on the upper surface of a plurality of spacer blocks and a gap is formed between the base and the spacer blocks, the level plate is divided into a pair of pieces along the dividing line. By dividing into two and inserting these two pieces into the above gap to the position where they abut each other from both sides in the longitudinal direction, without moving the base and the spacer block, the level plate is substantially over and over the spacer block It can be in a superimposed state.
Here, when the level plate is divided into a pair of pieces, the bolt hole of the level plate has a cutout shape opened at the dividing position, so that when the two pieces are inserted into the gap, they do not interfere with the anchor bolt. Can be avoided.

As described above, the level plate can be used as it is overlaid on the spacer block as it is, and can be used by dividing it into a pair of pieces as necessary. Therefore, the level plate is excellent in maintenance management and easy to handle. is there.

According to the second aspect of the present invention, since the ventilation groove is formed on the surface of the spacer block, air permeability between the base and the base which is pressed against the groove is ensured. Even when the level plate is stacked, the level plate has ventilation holes or steps corresponding to the ventilation grooves of the spacer block, so that air permeability between the base and the base is ensured and corrosion of the base is prevented. It can be effectively avoided. In other words, even when the level plate is used by being superimposed on the spacer block, the air permeability is not impaired.

According to the third aspect of the present invention, the level plate and the spacer block are shifted from each other in the width direction by fitting the step of the level plate into the ventilation groove of the spacer block or the step of another level plate. Stacked without. In particular, when interposing the element in the gap between the base and the spacer block, the element can be easily and accurately slid by sliding the element in the longitudinal direction with the step portion fitted in the ventilation groove. It can be superimposed on the spacer block.

Further, the thickness of the level plate is 1/5 of the thickness of the spacer block.
When it is set to ブ ロ ッ ク 1/20, the thickness of the spacer block can be finely adjusted accurately and easily, which is preferable.

According to the invention of claim 5, for example, when the anchor and the wooden base are fixed by fastening the anchor bolt,
Since the tips of the protrusions formed on the upper surface of the spacer block and level plate sink into the wooden base, the spacer block and level plate do not shift due to strong external force such as strong wind or earthquake, and the connection between the base and the base Is prevented from loosening. If the height of the protrusion is set so that only the front end portion does not completely dig into the lower surface of the base, the spacer block or the level plate does not completely adhere to the base, and there is a slight gap between the two. Since the gap is ensured, the air permeability is not impaired.

Further, even when the thickness of the level plate is adjusted by overlapping the level plate on the spacer block, the protrusions of the spacer block and each level plate are fitted into the concave portions formed on the lower surface of the level plate. Since the mutual displacement is prevented, the connection between the foundation and the base is not loosened.

It is to be noted that the level plate may be divided into a pair of individual pieces in advance as in the sixth aspect of the invention, and even in this case, the level plate is substantially the same as the first aspect of the invention. Similar effects can be obtained.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

FIGS. 1 to 3 show a spacer structure according to a first embodiment of the present invention. As shown in FIG. 3, an upper surface 1a of a concrete foundation 1 and a lower surface 2a of a base 2 made of wood.
A plurality of spacer blocks 10 are interposed at appropriate intervals, for example, every 1 m between them, thereby securing an appropriate gap D between the two and 1 to improve air permeability.

In this embodiment, the upper surface of the spacer block 10 is lower than other portions (for example, the upper surface of the left spacer block 10) as shown in the right spacer block 10 in FIG. If you have
In other words, if a gap is formed between the base 2 and the spacer block 10, the substantial thickness of the spacer block 10 can be reduced by appropriately stacking a number of thin level plates 20 on the spacer block 10. Adjustment is performed to level the upper surface of the spacer block 10 extending over a plurality.

Reference numeral 3 denotes a pillar provided on the base 2,
Reference numeral 4 denotes an anchor bolt for fastening the foundation 1 and the base 2. The lower portion of the anchor bolt 4 is embedded in the foundation 1, and the upper portion of the anchor bolt 4 projects from the upper surface 1 a of the foundation 1, and the spacer blocks 10, It penetrates through the inside of the level plate 20 and the base 2, and its protruding end is fastened by the screw 5. Although not shown here, an appropriate mortar layer is provided on the upper surface 1a of the foundation 1 to level the surface.

As shown in FIGS. 1 and 2, the spacer block 10 is formed in a rectangular plate shape having a thickness of about 20 mm, and the front and back surfaces (FIGS. 1 and 2) opposed to the foundation 1 and the base 2.
A plurality of ventilation grooves 11 extending in the longitudinal direction (in the direction of the arrow in FIG. 2) are formed on the upper and lower surfaces of the housing in order to improve sitting and improve ventilation and drainage. Further, in the spacer block 10, bolt holes 12 which are substantially T-shaped elongated holes penetrating in the thickness direction so that the anchor bolts 4 pass through are formed in two places in parallel in the longitudinal direction. . On both sides in the longitudinal direction of these bolt holes 12, two temporary fixing holes 13 through which nails (not shown) used for temporarily fixing the spacer block 10 on the foundation 1 penetrate are formed in the thickness direction. I have.

Further, two or more spacer blocks 10
Are arranged on the both sides in the width direction of the spacer block 10 so that the spacer blocks 10 can be connected in a line or at a right angle, or in a T-shape.
Each of the fitting grooves 14 is formed, and one fitting groove 14 and a tenon 15 are formed on both sides in the longitudinal direction.

On the other hand, the level plate 20 has substantially the same surface shape as that of the spacer block 10, and is 1/5 to 1/5 of the spacer block 10 so that the substantial thickness of the spacer block 10 can be finely adjusted accurately. It is formed in a thin plate shape having a thickness of about 1/20. That is, level plate 2
0 has a shape that overlaps the spacer block 10 without any excess or shortage.

In this level plate 20, a total of ten ventilation holes 21 extending in the longitudinal direction are formed intermittently at positions corresponding to the ventilation grooves 11, and at positions corresponding to the pair of bolt holes 12. In addition, one elongated hole-shaped bolt hole 22 through which the anchor bolt 4 penetrates is formed. That is, the bolt hole 22 has a shape as if the two bolt holes 12 were communicated. In the edge of the level plate 20, the fitting grooves 2 corresponding to the fitting grooves 14 and tenon 15 are provided.
4 and tenons 25 are formed.

A dividing groove 26 as a dividing line is formed at a central portion of the level plate 20 in the longitudinal direction. The dividing groove 26 extends linearly in the width direction so as to cross the bolt hole 22. When the level plate 20 is divided into a pair of pieces 20A and 20B along the dividing groove 26 (shown in FIG. 2). (State), cutouts 22A and 22B that are open at one end are formed at positions corresponding to the bolt holes 22 in each of the pieces 20A and 20B.

The spacer block 10 and the level plate 20 are formed of the same synthetic resin or rubber material. For example, 50 to 200 parts by weight of calcium carbonate and 0.5 to 2 parts by weight of carbon black with respect to 100 parts by weight of polypropylene. Is formed of a synthetic resin containing

Next, an operation procedure for finely adjusting the substantial thickness of the spacer block 10 using the level plate 20 will be described.

For example, in a state where the spacer block 10 is temporarily fixed to the upper surface 1a of the foundation 1 and the base 2 is not placed,
When the thickness of the spacer block 10 is adjusted, the number of the level plates 20 may be appropriately stacked on the spacer block 10 without being divided.

On the other hand, the base 2 is placed on the spacer block 10.
If a gap is formed between the upper surface of the spacer block 10 and the lower surface 2a of the base 2 after the mounting, the level plate 20 is inserted through the spacer block 10 even if the level plate 20 is inserted into the gap as it is. The anchor bolts 4 interfere with each other and cannot be inserted properly. In such a case, in this embodiment, each level plate 20
May be divided into a pair of pieces 20A, 20B along the dividing groove 26, and the pair of pieces 20A, 20B may be inserted from both front and rear sides in the longitudinal direction as shown in FIG. By doing so, the notch 22 in which the anchor bolt 4 is opened at one end is formed.
A and 22B enter and pass through, so that interference between the anchor bolt 4 and the pieces 20A and 20B can be avoided.

Then, the two pieces 20A, 20B are inserted to a position where they abut each other, whereby the two pieces 20A, 20B are inserted.
20B functions as the level plate 20 superimposed on the upper surface of the spacer block 10 without any excess or shortage. By stacking an appropriate number of level plates 20 on the spacer block 10 in this manner, the gap between the base 2 and the spacer block 10 can be filled. Therefore, when the foundation 1 and the base 2 are fastened via the anchor bolts 4 thereafter, the base 2 is not bent or bent.

As described above, according to this embodiment, the fine adjustment of the substantial thickness of the spacer block 10 is easily and accurately performed by appropriately stacking the level plates 20 on the spacer block 10. The upper surface thereof can be easily leveled over the plurality of spacer blocks 10.

Here, the level plate 20 has substantially the same surface shape as the spacer block 10 and is formed of the same synthetic resin.
0 is superimposed on the spacer block 10, although the actual thickness varies, the actual surface shape and hardness,
The strength and the like do not change, and the base can be stably supported as in the case where the level plate 20 is not provided.

Moreover, since the level plate 20 is provided with the ventilation holes 21 corresponding to the ventilation grooves 11 of the spacer block 10, the provision of the level plate 20 does not impair the air permeability at all.

In particular, the base 2 is placed on the spacer block 10.
Even after mounting, the level plate 20 can be divided into a pair of pieces 20A and 20B and inserted into the gap between the base 2 and the spacer block 10, that is, the base 2 and the spacer block 10 are moved. Since the thickness of the spacer block 10 can be adjusted without performing the above, the workability is extremely good.

As described above, the level plate 20 can be used as it is on the spacer block 10 as it is.
In addition, since it can be used by being divided into a pair of pieces 20A and 20B as required, it is excellent in maintenance management and easy to handle.

As shown in FIG. 4, for example, when a spacer block 10A having a half size of the spacer block 10 shown in FIG.
0 is divided into a pair of pieces 20A and 20B in advance, and one of the pieces 20B may be used. Even in this case, almost the same effect as in the case of using the above-described level plate 20 can be obtained. Obtainable.

FIGS. 5 and 6 show a spacer structure according to a second embodiment of the present invention. The same components as those of the first embodiment shown in FIGS. Each part of the level plate 30 corresponding to each part of the plate 20 is denoted by a reference numeral obtained by adding 10, and redundant description of the configuration and the operation and effect will be omitted as appropriate.

Level plate 3 according to the second embodiment
In FIG. 0, no ventilation hole is formed at a position corresponding to the ventilation groove 11 of the spacer block 10, and a step 37 extending in the longitudinal direction is formed instead. In other words, the level plate 30 has a stepped thin plate shape with irregularities formed in the width direction, and is slidable in the longitudinal direction with the step portion 37 fitted in the ventilation groove 11.

According to the structure of the second embodiment, the same effect as that of the first embodiment can be obtained. In addition, the step portion 37 of the level plate 30 can be connected to the ventilation groove 11 of the spacer block 10 or other parts. By fitting to the step portion 37 of the level plate 30, a plurality of level plates 30 can be accurately and easily stacked on the spacer block 10 without shifting in the width direction.

In particular, the level plate 3 is inserted into a gap created between the spacer block 10 and the base 2 as shown in FIG.
When inserting a pair of pieces 30A and 30B obtained by dividing the “0” by the dividing groove 36 from both sides in the longitudinal direction, as shown in FIG.
With the step portions 37 of the pieces 30A, 30B fitted in the ventilation grooves 11, the pieces 30A, 30B may be slid in the longitudinal direction, and both pieces 30A, 30B are extremely easily and accurately.
Can be superimposed on the spacer block 10.

FIG. 7 shows a third embodiment of the present invention, and the same components as those in the first embodiment are denoted by the same reference numerals. Here, a large number of protrusions 18 and 28 are formed on the upper surface of the spacer block 10 and the level plate 20 on the base 2 (FIG. 3) side, and each of the protrusions 18 and 28 has a substantially quadrangular pyramid shape projecting upward. ing. Also, on the lower surface of the level plate 20, the above-mentioned many protrusions 18, 2 are provided.
A number of recesses (not shown) corresponding to 8 are formed.

The level plate 20 is not provided with the ventilation holes 21 as shown in FIG. 1, and the upper surface side of the spacer block 10 in which the projections 18 are formed is also provided with ventilation grooves as shown in FIG. 11 is not formed.

According to the structure of the third embodiment, for example, when the anchor 1 shown in FIG. 3 is fastened to fix the foundation 1 and the base 2, they are formed on the upper surfaces of the spacer block 10 and the level plate 20. Since the tips of the projections 18, 28 sink into the wooden base 2, the spacer block 10 and the level plate 20 are exposed to a strong external force such as a strong wind or an earthquake.
Does not deviate from the set position, and loosening of the connection between the foundation 1 and the base 2 is prevented.

In the present embodiment, the height of each of the projections 18 and 28 is set so that only the tip portion is not completely intruded into the lower surface of the base 2 but is specifically 0.2 to 0.2.
It is set to about 4 mm. For this reason, the spacer block 10 or the level plate 20 does not completely adhere to the base 2 and a slight gap is secured between them, so that the ventilation groove 11 and the ventilation hole 21 as shown in FIG. Nevertheless, ventilation is ensured.

Further, even when the thickness is adjusted by superimposing the level plate 20 on the spacer block 10,
Since the spacer blocks 10 and the projections 18 and 28 of each level plate 20 are fitted into the concave portions formed on the lower surface of the level plate 20, they are prevented from being shifted from each other. There is no loosening.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a spacer block and a level plate according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a pair of pieces obtained by dividing the level plate of FIG. 1 into two parts and a level plate;

FIG. 3 is a perspective view showing a state in which a spacer block and a level plate are interposed between a foundation and a base.

FIG. 4 is an oblique perspective view showing a mode in which a spacer block having a half size of the spacer block shown in FIG. 2 and one of the pieces are used;

FIG. 5 is a perspective view showing a spacer block and a level plate according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a pair of pieces obtained by dividing the level plate of FIG. 5 into two and a level plate;

FIG. 7 is a perspective view showing a spacer block and a level plate according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Foundation 2 ... Base 4 ... Anchor bolt 10 ... Spacer block 11 ... Vent groove 12 ... Bolt hole 20 ... Level plate 20A, 20B ... Element 21 ... Vent hole 22 ... Bolt hole 22A, 22B ... Notch 26 ... Split groove

Claims (6)

[Claims] 1. A plurality of spacer blocks disposed at appropriate intervals so as to form a gap between a building foundation and a base, and a thin plate having substantially the same surface shape as the spacer blocks. And a level plate that is used by being superposed on at least one of the spacer blocks so as to finely adjust the substantial thickness of the spacer block. An elongated bolt hole through which an anchor bolt protruding from the top surface penetrates is formed in the thickness direction, and a central portion in the longitudinal direction of the level plate for dividing the plate into a pair of pieces. A spacer structure for a building foundation, wherein a secant portion is formed to extend in the width direction so as to cross the bolt hole. 2. One or more ventilation grooves extending in the longitudinal direction are formed on the surface of the space block facing the base, and ventilation holes or steps corresponding to the ventilation grooves are formed in the level plate. The spacer structure for a building foundation according to claim 1, wherein the spacer structure is formed so as to extend in a direction. 3. The spacer structure for a building foundation according to claim 2, wherein the level plate is slidable in a longitudinal direction with a step portion fitted in the ventilation groove of the spacer block. . 4. The spacer structure according to claim 1, wherein the thickness of the level plate is set to 1/5 to 1/20 of the thickness of the spacer block. 5. A plurality of projections are formed on an upper surface of the spacer block and the level plate on a base side, and a plurality of recesses corresponding to the plurality of projections are formed on a lower surface of the level plate. The spacer structure for a building foundation according to claim 1, wherein: 6. A plurality of spacer blocks provided at appropriate intervals so as to form a gap between a building foundation and a base, and a thin plate having substantially the same surface shape as the spacer blocks. And a level plate that is used by being superimposed on at least one of the spacer blocks so as to finely adjust the substantial thickness of the spacer block, the spacer block protruding from the upper surface of the foundation. A bolt hole through which an anchor bolt penetrates is formed to penetrate in the thickness direction, and the level plate is divided into a pair of pieces having a shape obtained by dividing the level plate into two in a longitudinal center portion. A notch which is open at one end where the anchor bolt can enter is formed.