JP2009215770A - Sill structure and sill receiving member of concrete foundation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sill structure of a new concrete foundation which not only extremely easily and positively secures the horizontality of a top surface of a sill with favorable accuracy but also is economical and achieved in complete underfloor ventilation, and to provide a sill receiving member of the concrete foundation. <P>SOLUTION: The wooden sill 11 is made to penetrate screw rods 20, 21 protruding from an upper surface 10a of the concrete foundation 10, and held on the foundation. In the sill structure, the sill receiving member 30 having a receiving seat surface 30a on a lower side 11b of the wooden sill 11 is screwed to the screw rods 20, 21, and the wooden sill 11 is held between fastening nuts 40 on an upper surface 11a of the sill and the sill receiving members. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a building foundation structure, and more particularly to a structure for penetrating and holding a wooden foundation with respect to a screw rod protruding from the upper surface of a concrete foundation, and a foundation receiving member used in the structure.

  In the foundation structure of a building such as a wooden house, a concrete foundation called a cloth foundation is laid on the ground in order to stably support the load of the building. And the wooden base of a building is installed in the upper surface of this concrete foundation. The wooden base is installed by inserting a screw rod such as an anchor bolt embedded in the concrete foundation and protruding from the upper surface of the foundation into the wooden base and screwing a tightening nut on the upper surface of the wooden base.

  In this type of foundation structure that is traditionally used, the lower surface 11b of the wooden foundation 11 is fixed in close contact with the upper surface 10a of the concrete foundation 10, as shown in FIG. In this structure, the vent hole 13 is formed on the side surface of the concrete foundation due to the necessity of ventilation under the floor. In the figure, reference numeral 20 is an anchor bolt, 40 is a tightening nut, 41 is a washer, and 12 is a pillar.

In this foundation structure, since the wooden foundation 11 is in contact with the upper surface (top end) 10a of the concrete foundation 10, it is necessary to make the concrete foundation upper surface 10a smooth in order to obtain the horizontality of the foundation 11, and usually a leveler. The work which pours the high fluidity mortar called is called (the top mortar hanging construction method). However, it is physically difficult to level the required height only by pouring mortar over the entire circumference of the foundation, even if it takes effort, time, and expense. This is the current situation. Moreover, in this structure, when the wooden base 11 touches the concrete foundation 10, it becomes easy to decay and there exists a possibility of generating problems, such as a termite. In addition, cracks C often form over time at the corners of the air vent 13 due to the load of the building, etc., and not only the problem of strength but also the appearance is reduced, and repairs are necessary.

  On the other hand, as shown in FIG. 9, a foundation structure is known in which a wooden foundation 11 is installed on a top surface 10a of a concrete foundation 10 with a packing material 70 interposed therebetween (a foundation packing method, for example, Patent Document 1). reference). In this foundation structure, since the packing material 70 such as plastic is interposed between the upper surface 10a of the concrete foundation 10 and the lower surface 11b of the wooden foundation 11, it is necessary to ensure air permeability under the floor and to provide the vent hole. This eliminates problems such as decay of the wooden base and cracks in the vents. 9, the same reference numerals as those in FIG. 8 represent the same members.

However, in the base structure in which the packing material 70 is interposed, not only is it necessary to lay a large number of packing materials, but also the packing material 70 is arranged in contact with the upper surface of the concrete foundation 10a. In order to improve the properties, it is necessary to use a plurality of types of packing materials having different thicknesses or to adjust the thickness of the packing materials due to the unevenness of the concrete foundation upper surface 10a, as described above, which is complicated. However, it was difficult to achieve a high level of accuracy.
JP 2002-276042 A

  The present invention has been made in view of the above points, and is extremely simple and easy, not only can ensure the levelness of the top surface of the foundation accurately and reliably, but also is economical, and underfloor ventilation is also completely achieved. A new concrete foundation foundation structure and foundation receiving member are provided.

  That is, the invention of claim 1 is a structure in which a wooden base is penetrated and held with respect to a screw rod protruding from the upper surface of the concrete foundation, and the base receiving member having a receiving seat surface on the lower surface side of the wooden base is the screw. The concrete foundation is characterized in that it is screwed to a bar and the wooden foundation is held between a clamping nut on the upper surface side.

  The invention according to claim 2 relates to the concrete foundation structure according to claim 1, wherein the screw rod is an anchor bolt or a screw rod for hole-down hardware.

  Invention of Claim 3 concerns on the foundation structure of the concrete foundation of Claim 1 or 2 with which the mortar was filled between the said foundation receiving member and the concrete foundation.

  According to a fourth aspect of the present invention, there is provided a receiving seat surface, a screw hole formed in a central portion of the receiving seat surface, and a locking portion of a turning jig formed in a side surface portion of the receiving seat surface. The present invention relates to a base receiving member having an engaging portion for engaging.

  The invention according to claim 5 relates to the base receiving member according to claim 4, wherein the material is made of metal or plastic.

  The invention according to claim 6 relates to the base receiving member according to claim 4 or 5, wherein a through-hole is formed in the receiving seat surface.

  According to a seventh aspect of the present invention, the planar shape of the receiving seat surface is circular, and a plurality of engaging portions are provided on the side surface circumferential portion of the receiving seat surface for engaging with the protrusions of the turning jig. It concerns on the foundation receiving member of any one of 4 thru | or 6.

  According to an eighth aspect of the present invention, in any one of the fourth to sixth aspects, the planar shape of the receiving seat surface is a regular polygon, and each side surface portion is formed as an engaging surface for engaging with a turning jig. It relates to the foundation receiving member described in item 1.

  The invention of claim 1 is a structure in which a wooden base is penetrated and held with respect to a screw rod protruding from the upper surface of a concrete foundation, and a base receiving member having a receiving seat surface on the lower surface side of the wooden base is provided on the screw rod. Since the wooden base is screwed and held between the clamping nuts on the upper surface side, the base can be very easily and easily adjusted in a short time by adjusting the screwing position of the base receiving member. The level of the top surface can be ensured accurately and reliably. In addition, it does not require the work to bring out the smoothness of the upper surface of the concrete foundation, and only screws the base receiving member onto the screw rod, so it is extremely economical both in terms of material and construction. Since the upper surface of the concrete foundation does not contact the wooden base, ventilation under the floor is completely achieved. In addition, when penetrating the wooden base, the wooden base is fastened to the base receiving member at the lower surface side at regular intervals by the tightening nut on the upper surface side, so that there is no distortion of the wood (the unevenness of the wood is automatically removed). Has the advantage of being straightened. If the foundation receiving member is not embedded, the height of the foundation can be adjusted at any time even after the building is completed.

  The invention of claim 2 is the invention according to claim 1, wherein the screw rod is an anchor bolt or a screw rod for hole-down hardware, so that members used in conventional foundation work and construction methods can be used as they are. It is easy and economical.

  Since invention of Claim 3 is what is filled with mortar between the said foundation receiving member and concrete foundation in Claim 1 or 2, it is easy with respect to needs, such as intensity | strength or an external appearance, and It can be handled easily and economically.

  According to a fourth aspect of the present invention, there is provided a receiving seat surface, a screw hole formed in a central portion of the receiving seat surface, and a locking portion of a turning jig formed in a side surface portion of the receiving seat surface. Since the present invention relates to a base receiving member characterized by having an engaging portion for engaging, there is a manufacturing and economic advantage with a simple structure. Since the height of the base receiving member is adjusted by screws, fine adjustment can be performed easily and easily with no precision.

  The invention of claim 5 is that, in claim 4, the material is made of metal or plastic, so that it is easy to manufacture and is advantageous in terms of manufacture and economy.

  The invention of claim 6 is the invention according to claim 4 or 5, wherein a through-hole is formed in the receiving seat surface, so that not only can the weight be reduced, but also when the mortar is filled, the base receiving member and the mortar The bond strength of is improved.

  A seventh aspect of the present invention is that, in any one of the fourth to sixth aspects, the planar shape of the receiving seat surface is circular, and the protrusion of the turning jig is engaged with a side circumferential portion of the receiving seat surface. Therefore, it is easy and economical to manufacture, is easy to use, and is practical.

  The invention according to claim 8 is the engagement according to any one of claims 4 to 6, wherein the planar shape of the seating surface is a regular polygon, and each side surface portion thereof engages with the turning jig. Since it is formed as a surface, it is easy and economical to manufacture, is easy to use, and is practical. A general-purpose tool such as a spanner can also be used.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of an essential part showing an embodiment of a foundation structure of a concrete foundation of the present invention, FIG. 2 is an enlarged cross-sectional view of a part thereof, and FIG. 3 is a cross-sectional view showing a state in which the height of the base is adjusted, 4 is a cross-sectional view of the main part showing another embodiment of the base structure, FIG. 5 is a perspective view showing an embodiment of the base receiving member and its rotating jig, and FIG. 6 shows another embodiment of the base receiving member. FIG. 7 is a perspective view showing another embodiment of the base receiving member.

  As shown in FIG. 1 and FIG. 2 which is an enlarged view of the main part, the present invention penetrates the wooden base 11 with respect to the screw rods 20 and 21 which are embedded in the concrete foundation 10 and protrude from the upper surface 10a. It relates to the structure to hold. In the foundation structure of the concrete foundation of the present invention, a base receiving member 30 having a receiving seat surface 30a is screwed to the screw rods 20 and 21 on the lower surface side 11b of the wooden base 11, and the wooden base 11 is formed on the upper surface side 11a. It is characterized by being held between the tightening nuts 40. Reference numeral 14 in the figure is a through hole of a wooden base.

As shown in the figure, since the base receiving member 30 is rotatably attached to the screw rods 20 and 21, the height can be adjusted by turning with a turning jig. FIG. 3 shows a state in which the height of the base 11 is adjusted. If (b) in FIG. 3 is a standard height, since (a) is low, the base receiving member 30 (30A) is attached to the screw rod 20 ( 20A) is rotated counterclockwise t1 and raised, and (c) is high, so the base receiving member 30 (30C) is rotated clockwise t2 with respect to the screw rod 20 (20C) and lowered. Horizontal adjustment is performed by adjusting the unevenness of the top surface 11a of the base 11. Needless to say, after the adjustment is completed, the tightening nut 40 on the upper surface side 11a of the wooden base 11 is tightened. Reference numeral 41 denotes a washer for the tightening nut 40.

As the threaded rod, as shown in the invention defined in claim 2, the threaded rod 21 for the anchor bolt 20 or the hole-down hardware 42 generally used in the past can be used. The anchor bolt 20 for a concrete foundation has, for example, a diameter of 16 mm and a screw pitch of 2 mm, and is usually erected at intervals of 910 mm, and it is advantageous to use this. The screw rod 21 for the hole-down hardware 42 is used for tightening the concrete foundation 10 and the column 12 leg portion, and has a diameter of 16 mm and a screw pitch of 2 mm. 1, 43 is a mounting plate to the side surface 12c of the column 12, 44 is a mounting screw, 45 is a screw rod penetrating portion formed integrally with the mounting plate 43, 46 is a tightening nut, 47 is a washer.

1 is a screw rod for the end portion of the base 11, and when it is located under the corner pillar 12 as shown in the figure, the base 11 does not penetrate the base 11 and does not penetrate. In some cases, only 30 receiving seat surfaces 30a may be held.

  FIG. 4 shows an example in which the mortar M is filled between the foundation receiving member 30 (35) and the concrete foundation 10 as defined in the invention of claim 3. As will be described later, the base receiving member 30 is designed to sufficiently hold the load of the wooden base 11 on the base receiving surface 30a, but when the use environment is severe or particularly high durability is required, Alternatively, the mortar M may be filled between the concrete foundation 10 according to the strength demands due to the material and the like, or the necessity of the appearance and the like. The mortar M can easily and easily meet such demands economically. Needless to say, the filling of the mortar M is performed after the unevenness adjustment of the base 11. The base receiving member 30 (35) shown in FIG. 4 is defined as the invention of claim 6. The through-hole 39 is formed in the receiving seat surface 30a, and when the mortar is filled, the base receiving member 35 and the mortar M are coupled. Power is improved.

  Next, the base receiving member 30 will be described. As already described, the base receiving member 30 of the present invention is formed on the receiving seat surface 30a, the screw hole portion 31 formed at the center of the receiving seat surface, and the side portion of the receiving seat surface 30a. It has the engaging part 32 for engaging with the latching | locking part 51 of the jig | tool 50 for rotation.

As described above, the receiving seat surface 30a is a portion that is in contact with the lower surface of the wooden base 11 and holds the load of the wooden base, and has a necessary load bearing performance. As described above, a conventional anchor bolt for a concrete foundation has a diameter of 16 mm and a screw pitch of 2 mm, and is usually erected at an interval of 910 mm. Then, the size and strength of the receiving surface 30a are calculated. The base receiving member 30 in the example shown in FIG. 5 is made of an iron material, and the receiving seat surface 30a has a circular shape with a plate thickness of 16 mm and a diameter of 80 mm. The screw diameter of the screw hole portion 31 formed in the central portion of the receiving seat surface 30a is 16 mm for screwing to a general anchor bolt 20 and the screw pitch is 2 mm. In addition to this example, the relationship between the screw rod 20 and the screw hole 31 includes a diameter of 12 to 16 mm and a screw pitch of 1.5 mm.

As defined in claim 5, the base receiving member 30 is advantageously made of metal or plastic. As the metal, an aluminum material or the like can be used in addition to the above-described iron material. Plastics are easy to mass-produce and light weight, and are economical.

As shown in FIG. 7 and defined as the invention of claim 6, an appropriate through portion 39 can be formed in the receiving seat surface 30 a of the base receiving member 30 (35). In addition to being able to reduce the weight, the bonding force between the base receiving member and the mortar is improved when the mortar is filled. Although the penetration part of FIG. 7 is circular and formed in three places, the shape and the number can be set as appropriate. Reference numeral 37 denotes a notch engaging portion for a turning jig.

An engaging portion 32 for engaging with the locking portion 51 of the turning jig 50 is formed on the side surface portion of the receiving seat surface 30a. In the base receiving member 30 of the embodiment of FIG. 5, as defined in the invention of claim 7, the planar shape of the receiving seat surface 30a is circular, and the side circumferential portion 30b of the receiving seat surface is not rotated. A plurality of engaging portions 32 for engaging with the protruding portions 51 of the moving jig 50 are formed. In this example, the engaging portions 32 are formed at four locations at intervals of 90 degrees of the side surface circumferential portion 30b of the receiving seat surface by holes.

  In the base receiving member 60 illustrated in FIG. 6, as defined in the invention of claim 8, the planar shape of the receiving seat surface 60 a is a regular polygon, here a regular hexagon, and each side surface portion 62 is for rotation. It is formed as an engagement surface for engaging with a jig. Such a regular polygon-shaped base receiving member 60 has the advantage that a general-purpose tool such as a spanner can be used as a turning jig, is easy and economical to manufacture, is easy to use, and is practical. .

  The base receiving member 30 of the present invention is screwed to each screw rod 20 before the wooden base 11 is installed on the concrete foundation 10. The base receiving member 30 is screwed to the initial setting position by an appropriate height jig or the like. Thereafter, the wooden base 11 is installed on the screw rod 20 and the base receiving member 30 through the through hole 14. Then, the upper surface (top surface) 11a of the wooden base 11 is measured with a level or the like, and a necessary base receiving member 60 is rotated using a rotating jig to adjust the level of the base top surface.

It is sectional drawing of the principal part which shows the Example of the foundation structure of the concrete foundation of this invention. It is a partial expanded sectional view of FIG. It is sectional drawing showing the state which performs height adjustment of a base. It is sectional drawing of the principal part which shows another Example of a foundation structure. It is a perspective view showing the Example of a base receiving member and its rotation jig. It is a perspective view showing other examples of a foundation receiving member. Furthermore, it is a perspective view showing another Example of a base receiving member. It is sectional drawing which shows an example of the conventional foundation structure. It is sectional drawing which shows the other example of the conventional foundation structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Concrete foundation 10a Foundation upper surface 11 Wooden base 11b Wooden base lower surface 20, 21 Screw rod 30 Base receiving member 30a Receiving seat surface 31 Screw hole part 32 Engagement part 40 Fastening nut 50 Jig for rotation

Claims (8)

  A structure in which a wooden base (11) is penetrated and held with respect to a screw rod (20, 21) projecting from an upper surface (10a) of a concrete foundation (10), and on a lower surface side (11b) of the wooden base (11) A base receiving member (30) having a receiving seat surface (30a) is screwed onto the screw rod, and the wooden base (11) is held between the tightening nut (40) on the upper surface side (11a). The foundation structure of the concrete foundation characterized by that.   The foundation structure of a concrete foundation according to claim 1, wherein the screw rod is an anchor bolt or a screw rod for hole-down hardware.   The foundation structure of a concrete foundation according to claim 1 or 2, wherein mortar (M) is filled between the foundation receiving member and the concrete foundation.   The receiving seat surface (30a), the screw hole portion (31) formed in the center of the receiving seat surface, and the rotation jig (50) formed in the side surface portion of the receiving seat surface (30a). A base receiving member having an engaging portion (32) for engaging with a stop portion (51). The base receiving member according to claim 4, wherein the material is made of metal or plastic. The base receiving member according to claim 4 or 5, wherein a penetrating portion is formed on the receiving seat surface. 5. The planar shape of the receiving seat surface is circular, and a plurality of engaging portions for engaging with the protrusions (51) of the turning jig (50) are provided on the side surface circumferential portion of the receiving seat surface. The base receiving member of any one of thru | or 6. The planar shape of the said receiving seat surface is a regular polygon, Each side part is formed as an engagement surface (61) for engaging with the jig | tool for rotation, The one in any one of Claim 4 thru | or 6 The base receiving member as described.

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