JP3643343B2 - Building foundation construction method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction method for building a foundation for wooden houses, etc., in particular, building a foundation base ing erected vertical walls foundation of a building is provided that is buried in the ground It relates to the construction method.
[0002]
[Prior art]
Conventionally, as a substructure for buildings, for example, those as shown in FIG. 6 (e) are known. This includes a base portion 1 buried in the ground, and a vertical wall portion 2 standing on the base portion 1 and having a lower end buried in our ground and a wood base (not shown) provided at the upper end. Yes. The vertical wall portion 2 is molded with concrete integrally with the base portion 1. 3 is a ground formed by laying a crushed stone 3 a that supports the base portion 1, and 4 is a reinforcing steel bar embedded in the base portion 1 and the vertical wall portion 2.
[0003]
As shown in FIG. 6 (a), such a conventional building foundation construction method is to pour fluid concrete into the bottom 5a of the recess 5 in which the crushed stone 3a previously formed on the ground is laid, and to pour fluid concrete. Then, the base portion 1 is formed by curing and curing for a required period. Next, as shown in FIG. 6B, a mold 6 for forming the vertical wall portion is assembled, and then shown in FIG. 6C. As shown in FIG. 6 (d), when the concrete is solidified by pouring fluid concrete into the mold 6 and curing for a required time, the mold 6 is removed and then the outer surface is polished. Finishing is performed, and as shown in FIG. 6E, the recess is finally filled back.
[0004]
[Problems to be solved by the invention]
Incidentally, in the construction method of the prior art building substructure is in equal polishing the outer vertical wall portion 2 is finished, just weathering proceeds while it is used for many years, discolored There is a problem in that it often causes cracks and cracks, which deteriorates the appearance and deteriorates the appearance quality. There is also a request to further improve durability.
Furthermore, since the vertical wall portion 2 is formed using the mold 6 in the construction, there is a problem that the number of man-hours is increased, the construction workability is poor, and the construction efficiency is poor. Furthermore, for concrete curing, for example, it takes about one week in the summer and about two weeks in the winter, so the base part 1 and the vertical wall part 2 are separately constructed, so twice as much time is required. In other words, the construction period was long, and in this respect, the construction efficiency was poor, and the cost was increased accordingly.
[0005]
The present invention has been made in view of the above problems, and it is possible to prevent a situation in which the appearance is deteriorated even when used for many years and the appearance quality is deteriorated, and the number of man-hours and the construction period are reduced. and to provide a method of constructing buildings for foundation thereby reducing the on to the construction cost can be constructed with reduced.
[0006]
[Means for Solving the Problems]
The building substructure constructed by the construction method of a building substructure of the present invention includes a vertical wall portion the lower end are erected on the base portion and the base portion which is buried in the ground is embedded in our ground In the building foundation structure provided, the vertical wall portion is configured by a natural stone block obtained by processing natural stone standing directly on the base portion.
[0007]
As a result, the natural stone background is exposed on the outer surface of the vertical wall portion, so that the appearance is good, a high-quality feeling is produced, and the appearance quality is improved. In addition, even if it is used for many years, it is a natural stone, so the weathering progresses very slowly compared to concrete, and there is almost no situation of discoloration or cracking, so that the durability is improved and the appearance is poor. Thus, it is possible to prevent the appearance quality from being impaired and to improve the appearance quality.
In addition, the vertical wall can be formed simply by standing the natural stone block directly on the base during construction, so the number of man-hours is extremely small compared to the conventional case of mold forming. Therefore, the construction period is short, the construction work is simple, the construction workability is good, the construction efficiency is greatly improved, and the cost is reduced. As a result, a high-quality natural stone foundation can be provided at a low cost.
[0008]
And, if necessary, a through hole in the vertical direction is formed in the natural stone block, a stud bolt inserted into the through hole of the natural stone block is provided in the base portion, and the natural stone block is inserted into the through hole. The stud bolt is inserted into the base portion and is erected on the base portion, and a nut is screwed into the stud bolt and fixed. The natural stone block is firmly bonded to the base portion, the support strength is improved, and the durability is further improved.
[0009]
Further, if necessary, a fitting groove in which the lower end portion of the natural stone block is fitted is formed in the base portion, and the lower end portion of the natural stone block is fitted into the fitting groove of the base portion, It is configured to stand on the base. Since the natural stone block can be positioned by being fitted in the fitting groove during the construction, the positioning is easily performed, and the construction workability is improved and the construction efficiency is improved. Further, since the natural stone block is fitted in the fitting groove, it is firmly bonded to the base portion, the support strength is improved, and the durability is further improved.
In this case, it is effective that the base portion is formed in a rectangular cross section, and reinforcing reinforcing bars are embedded on the upper side of the base portion and on the left and right of the fitting groove of the natural stone block. The shoulder portion of the base portion that is weakened as much as the fitting groove is formed is firmly held, and the durability is further improved.
[0010]
Furthermore, it is set as the structure which attached the decorative plate formed with the natural stone to the outer surface of the said natural stone block as needed. By using a natural stone material that is more expensive than a natural stone block, it is possible to further increase the sense of quality and improve the appearance quality.
[0011]
Moreover, in order to achieve said objective, the construction method of the foundation for buildings of this invention includes the base part embed | buried in the ground, the vertical wall part erected in this base part, and the lower end embed | buried in our ground In the construction method of the building foundation provided with the base part forming step of pouring fluid concrete into the bottom of the recess formed in advance on the ground and curing the required period to form the base part, and the upper end side above the opening of the recess The structure includes a vertical wall portion forming step of forming a vertical wall portion by standing a natural stone block protruding and processing natural stone directly on the base portion, and a backfilling step of refilling the recess.
[0012]
As a result, the natural stone background is exposed on the outer surface of the vertical wall portion, so that the appearance is good, a high-quality feeling is produced, and the appearance quality is improved. In addition, even if it is used for many years, it is a natural stone, so the weathering progresses very slowly compared to concrete, and there is almost no situation of discoloration or cracking, so that the durability is improved and the appearance is poor. Thus, it is possible to prevent the appearance quality from being impaired and to improve the appearance quality.
In addition, the vertical wall can be formed simply by standing the natural stone block directly on the base during construction, so the number of man-hours is extremely small compared to the conventional case of mold forming. Therefore, the construction period is short, the construction work is simple, the construction workability is good, the construction efficiency is greatly improved, and the cost is reduced. As a result, a high-quality natural stone foundation can be provided at a low cost.
[0013]
And, the above SL base portion forming step, the inserted into the through hole of the formed in the natural stone block vertically provided stud bolt for fixing the natural stone block to the base portion, in the vertical wall portion formation step The natural stone block is erected on the base portion by inserting the through hole through the stud bolt. The natural stone block is firmly bonded to the base portion, the support strength is improved, and the durability is further improved.
[0014]
Further, if necessary, a fitting groove into which the lower end portion of the natural stone block is fitted is formed in the base portion forming step, and the lower end portion of the natural stone block is placed on the base in the vertical wall portion forming step. It is set as the structure standing in this base part by fitting in the fitting groove of a part. Since the natural stone block can be positioned by being fitted in the fitting groove during the construction, the positioning is easily performed, and the construction workability is improved and the construction efficiency is improved. Further, since the natural stone block is fitted in the fitting groove, it is firmly bonded to the base portion, the support strength is improved, and the durability is further improved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, with reference to the accompanying drawings, the construction method of the engaging Ru building substructure to the embodiment of the present invention will be described in detail. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as the above.
As shown in FIG. 1, a building foundation structure constructed by a building foundation construction method according to an embodiment of the present invention has a base portion 10 buried in the ground, and a lower end standing on the base portion 10. 20a includes a vertical wall portion 20 embedded in the ground and provided with a base 21 made of wood at an upper end 20b. In the embodiment, the base portion 10 and the vertical wall portion 20 are formed separately from each other. Reference numeral 3 denotes a ground formed by laying a crushed stone 3 a that supports the base portion 10.
[0016]
As shown in FIGS. 1 and 2, the vertical wall portion 20 is configured by connecting a large number of natural stone blocks B obtained by processing natural stone directly standing at the center of the base portion 10. Various rocks such as granite (granite) are used as natural stones. The natural stone block B is formed in a rectangular parallelepiped shape. For example, the thickness T is T = 100 to 150 mm (120 mm in the embodiment), the height H is H = 500 to 650 mm, and the length L is L = 2000. It is cut out to ˜3000 mm, and in particular, the outer surface 22 facing the outside of the building is polished in advance with high accuracy. In addition, since the natural stone block B, for example, arranged at the corner portion of the foundation or the like may not be uniquely sized, a part of the natural stone block B is appropriately cut and the length L is adjusted. .
The natural stone block B has a plurality of vertical through holes 23 formed along the longitudinal direction.
[0017]
The base portion 10 is made of concrete and has a rectangular cross section. In the base portion 10, stud bolts 11 that are inserted into the through holes 23 of the natural stone block B and into which the nuts 12 are screwed are provided corresponding to the through holes 23 of the natural stone block B. Moreover, the fitting groove | channel 13 which the lower end 20a part of the natural stone block B fits is formed in the upper center of the base part 10 along a longitudinal direction. The depth D of the fitting groove 13 is set to D = 50 mm, for example. The natural stone block B has a lower end 20a fitted into the fitting groove 13 of the base 10 and is erected on the base 10 and the through-hole 23 is inserted into the stud bolt 11 to form a base. It is erected on the portion 10, and is fastened and fixed by screwing a nut 12 into the stud bolt 11 together with the base 21. As a result, as shown in FIG. 1, when the dimensional relationship of the natural stone block B is as described above and the depth D of the fitting groove 13 is D = 50 mm, the vertical wall portion 20 from the base portion 10 is obtained. The height Ha becomes Ha = 450 to 600 mm.
Further, a general reinforcing bar 14 is embedded in the base portion 10, and reinforcing reinforcing bars 15 are embedded on the left and right sides of the fitting groove 13 into which the natural stone block B is fitted above the base portion 10. ing.
[0018]
Next, the building foundation construction method according to the embodiment of the present invention will be described in detail with reference to the process diagrams shown in FIGS.
[0019]
(1) Base part formation process As shown to Fig.3 (a) (b), the general reinforcing bar 14 and the reinforcing bar 15 are arrange | positioned in the bottom part 5a of the recess 5 which was previously formed in the ground and the crushed stone 3a was laid. At the same time, a stud bolt 11 is provided. In addition, a large number of groove molds 30 formed of, for example, a wooden board for forming the fitting grooves 13 are disposed. As shown in FIG. 3B, the groove mold 30 is connected at the stud bolt 11, and a recess 31 into which the stud bolt 11 is inserted is provided at the connection end 30a. The general reinforcing bar 14, the reinforcing reinforcing bar 15, the stud bolt 11, and the groove mold 30 are supported in the recess 5 using a support fitting (not shown) or the like.
Then, in this state, fluidized concrete is poured into the bottom 5a of the recess 5, cured for a required period and solidified, and when solidified, the groove mold 30 is removed to form the base portion 10.
In this case, since reinforcing reinforcing bars 15 are embedded on the upper side of the base portion 10 and on the left and right sides of the fitting groove 13 of the natural stone block B, the shoulder of the base portion 10 that becomes weaker as the fitting groove 13 is formed. The part is firmly held.
[0020]
(2) Vertical wall portion forming step As shown in FIG. 4 (a), a natural stone block B having a height such that the upper end 20b side protrudes above the opening of the recess 5 is prepared. The vertical wall portion 20 is formed upright on the base portion 10. At this time, the natural stone block B is inserted into the stud bolt 11 through the through hole 23, and the lower end 20 a of the natural stone block B is fitted into the fitting groove 13 of the base portion 10 and is erected on the base portion 10. In this case, the natural stone block B is fitted and positioned in the fitting groove 13, so that the positioning is easily performed, the workability is improved, and the work efficiency is improved. Further, since the natural stone block B is fitted in the fitting groove 13, it is firmly bonded to the base portion 10 and the support strength is improved.
[0021]
Furthermore, in this case, since the vertical wall portion 20 is formed simply by standing the natural stone block B on the base portion 10, the number of man-hours is significantly reduced as compared with the case of molding as in the prior art. Construction work is simple, construction workability is good, and construction efficiency is improved. Furthermore, since the construction period can be shortened, the construction efficiency can be improved in this respect, and the cost can be reduced even if the cost required for the natural stone itself is taken into consideration.
[0022]
(3) Backfill process As shown in FIG. 4B, the recess 5 is backfilled.
(4) Foundation Installation Step As shown in FIG. 4 (c), a foundation 21 made of wood in which a plurality of through holes 21a in the vertical direction corresponding to the stud bolts 11 are formed in the longitudinal direction in advance is used. 21 is provided on the upper end 20b of the natural stone block B. At this time, the wood is inserted into the stud bolt 11 through the through hole 21a, and the nut 12 is screwed into the stud bolt 11 to be fastened and fixed. In this case, since the natural stone block B is fastened and fixed to the base portion 10 by the stud bolt 11 and the nut 12, the natural stone block B is firmly bonded and the support strength is improved.
[0023]
In this way, according to the building basic structure constructed and constructed, as shown in FIG. 1, the outer surface 22 of the vertical wall portion 20 is exposed to natural stone, so it looks good. A sense of quality is produced, and the appearance quality is improved. In addition, even if it is used for many years, it is a natural stone, so the weathering progresses very slowly compared to concrete, and there is almost no situation of discoloration or cracking, so that the durability is improved and the appearance is poor. Thus, it is possible to prevent the appearance quality from being impaired and to improve the appearance quality.
In addition, the natural stone block B is fitted in the fitting groove 13 and is fastened and fixed to the base portion 10 with the stud bolt 11 and the nut 12. Durability is improved in this respect as well. Furthermore, since the reinforcing bars 15 are embedded on the upper side of the base portion 10 and on the left and right of the fitting groove 13 of the natural stone block B, the shoulder portion of the base portion 10 is also firmly held. In terms of durability, durability can be improved.
[0024]
FIG 5 shows another building substructure. This is configured in substantially the same manner as described above, but unlike the above, the decorative plate 40 formed of natural stone is appropriately bonded to the outer surface 22 of the natural stone block B, such as an adhesive or an anchor bolt. It is attached using means (an anchor bolt 41 is shown in FIG. 5). The decorative plate 40 is attached before the backfilling process. In this case, a natural stone material that is more expensive than the natural stone block B is used as the decorative plate 40. Therefore, a sense of quality is further increased and appearance quality is improved.
[0026]
【The invention's effect】
According to the construction method of the foundation for the building of the present invention as described above, since it is configured by natural stone block processing the natural stone to be directly erected vertical wall portion in the base portion, the outer surface of the vertical wall portion It is possible to expose the surface of natural stone, so that the appearance is good, a sense of quality is produced, and the appearance quality can be improved. In addition, even if it is used for many years, it is a natural stone, so the weathering progresses very slowly compared to concrete, there is almost no situation of discoloration or cracking, so that it can improve durability and look good A situation in which the appearance quality is deteriorated and the appearance quality is deteriorated can be prevented, and the appearance quality can be further improved.
[0027]
In addition, the vertical wall can be formed simply by standing the natural stone block directly on the base during construction, so the number of man-hours is extremely small compared to the conventional case of mold forming. Therefore, the construction period is short, the construction work is simple, the construction workability is good, the construction efficiency can be greatly improved, and the cost can be reduced. As a result, there is a sense of quality. The foundation of natural stone can be provided at low cost.
[0028]
And when the natural stone block is erected on the base portion by inserting the through hole through the stud bolt, and the nut is screwed and fixed to the stud bolt, the natural stone block is firmly coupled to the base portion. It is possible to improve the support strength and further improve the durability.
In addition, when the natural stone block is erected on the base portion by fitting the lower end of the natural stone block into the fitting groove of the base portion, it can be positioned by fitting the natural stone block into the fitting groove at the time of construction. Therefore, the positioning can be easily performed, the workability is improved, and the work efficiency can be improved. Further, since the natural stone block is fitted into the fitting groove, it can be firmly bonded to the base portion, the support strength can be improved, and the durability can be further improved.
[0029]
Furthermore, in the building foundation structure, when the base part is formed in a rectangular cross section and the reinforcing bars are embedded on the left and right of the natural stone block fitting groove on the upper side of the base part, the fitting groove is formed. Since the shoulder portion of the base portion that is weakened is firmly held, the durability can be further improved.
Furthermore, when a decorative plate made of natural stone is attached to the outside surface of a natural stone block in the foundation structure for a building, a natural stone material that is more expensive than the natural stone block is used to make it more luxurious. The appearance quality can be improved.
[Brief description of the drawings]
1 is a cross-sectional view showing a building substructure constructed by the construction method of the engagement Ru building substructure to the embodiment of the present invention.
2 is a perspective view showing the structure of a natural stone block used in the building substructure constructed by the construction method of the engagement Ru building substructure to the embodiment of the present invention.
FIGS. 3A and 3B are process diagrams showing a building foundation construction method according to an embodiment of the present invention, wherein FIG. 3A is a cross-sectional view showing a base portion forming process, and FIG. 3B is a plan view thereof;
4A and 4B are process diagrams showing a building foundation construction method according to an embodiment of the present invention, in which FIG. 4A is a cross-sectional view showing a vertical wall forming process, and FIG. 4B is a cross-sectional view showing a backfilling process. (C) is sectional drawing which shows a base installation process.
5 is a cross-sectional view showing another building substructure constructed by the construction method of the engagement Ru building substructure to the embodiment of the present invention.
FIG. 6 is a process diagram showing an example of a conventional building foundation construction method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 Ground 3a Crushed stone 5 Recess 10 Base part 11 Stud bolt 12 Nut 13 Fitting groove 14 Reinforcing bar 15 Reinforcing bar 20 Vertical wall part 20a Lower end 20b Upper end B Natural stone block 21 Base 22 Outer side surface 23 Through hole 30 Die for groove 30a Consecutive end 31 Concave portion 40 Decorative plate 41 Anchor bolt

Claims (2)

In a construction method for a foundation for a building comprising a base portion embedded in the ground and a vertical wall portion standing on the base portion and embedded in the ground at the lower end,
  A base part forming step in which fluidized concrete is poured into the bottom of a recess formed in advance on the ground and the base part is formed by curing for a required period;
  A vertical wall forming step in which a natural stone block whose upper end protrudes above the opening of the recess and processes natural stone is directly erected on the base portion to form a vertical wall portion;
  A backfilling process for backfilling the recess,
  In the base portion forming step, a stud bolt is provided for fixing the natural stone block to the base portion, which is inserted into a vertical through hole formed in the natural stone block.
  A building foundation construction method characterized in that, in the vertical wall portion forming step, the natural stone block is erected on the base portion by inserting the through hole through the stud bolt. In the base portion forming step, a fitting groove into which the lower end portion of the natural stone block is fitted,
  2. The building foundation according to claim 1, wherein, in the vertical wall portion forming step, the natural stone block is erected on the base portion by fitting a lower end portion of the natural stone block into the fitting groove of the base portion. Construction method.

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