Horizontal leveling fastening method for concrete foundation and wooden vertical members

Abstract

To provide a horizontal leveling fastening method of a concrete foundation and a wooden vertical material.SOLUTION: A horizontal leveling fastening method of a concrete foundation and a wooden vertical material includes the steps of: (a) boring n anchor holes 35 in a concrete foundation 30; (b) installing a post-construction anchor 200 in the anchor holes 35; (c) fastening nuts 240 to each anchor head 230 having screw thread shapes in the upper part of the post-construction anchor 200, and fastening the nuts 240 so that the upper surfaces of n nuts 240 coincide with a reference surface X1; (d) preparing n pieces of wooden vertical material 10 where insertion holes to which the nuts 240 are inserted are formed on a lower surface thereof; (e) moving and installing the wooden vertical material 10 in a horizontal direction so that the nuts 240 are inserted to the insertion holes formed on the lower surfaces of the n pieces of wooden vertical material 10, in which the movement directions of the n pieces of wooden vertical material 10 are any one of two or more movement directions; and (f) filling a space between the concrete foundation 30 and the lower surface of the nut 240 with a predetermined member.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to the field of construction, and more particularly to a wooden building construction method. [Background technology]

[0002] Wooden buildings are structures in which the basic supporting structures, such as pillars and beams, are made of wood. Wooden buildings are economical because they are inexpensive to build, easy to repair, and have the advantage of being highly insulating because wood itself has a low thermal conductivity, so they are still widely used today.

[0003] Unlike traditional wooden buildings, modern wooden buildings generally have foundations made of concrete. Therefore, wooden vertical members are fastened to the concrete foundation. In this case, the wooden members and the concrete foundation, which are different types of materials, must be fastened together, and a strong connection between these different materials plays an important role in the stability of the building.

[0004] A common method is to install post-installed anchors in a concrete foundation and then fasten wooden vertical members to them. Patent Document 1 also proposes a special type of concrete foundation in which anchors are embedded in advance during the concrete pouring step to provide a moisture drainage path. All of these methods require good horizontal leveling of the concrete foundation.

[0005] However, in most buildings that use concrete foundations, including wooden buildings, the concrete foundation is formed by forming a mold with the foundation level indicated into the desired shape, then pouring concrete and curing it, so the level surface is almost always imperfect due to various reasons such as uneven pouring of the concrete and drainage during the curing process. In other words, horizontal leveling work is almost always necessary.

[0006] There are various methods for leveling concrete foundations. If the level difference is not large, it can be easily scraped away using a tool such as a grinder. Self-leveling leveling mortar is also sometimes used. A simple method for reinforced concrete buildings is to embed rebars with levels marked at predetermined intervals in the middle of the floor beforehand, and pour the concrete evenly in accordance with these to prevent uneven pouring. However, this method cannot be used for wooden buildings that do not use rebar.

[0007] In wooden buildings, leveling of concrete foundations is even more important. In reinforced concrete buildings, concrete can somewhat prevent eccentric loads during the process of forming vertical members such as columns and bearing walls. However, in wooden buildings where vertical wooden members are erected, the load is eccentrically applied to the lowest vertical member. This causes the wooden members to easily deform, resulting in structural instability.

[0008] To prevent this, leveling members specifically designed for wooden buildings have been developed and are being used. Patent Documents 2, 3, and 4, filed by the same applicant, propose a plastic member to be inserted between the foundation and base, thereby enabling horizontal leveling of the top surfaces of the foundation and base. According to this method, the concrete foundation and the plastic member are firmly fastened together with mortar, the plastic member and the wooden base are then fastened together with bolts, and wooden vertical members are then fastened onto the wooden base.

[0009] The aforementioned conventional technology has the limitation that it must use a wooden foundation. Also, because it uses three types of materials (concrete, plastic, and wood), the fastening of the different types of materials must be maintained individually and strongly. Furthermore, the strength of the plastic members must be made to a certain level or higher so that they can support the weight of the entire building, and it is also necessary to manage the air gap between the foundation and the plastic members.

[0010] Therefore, there is a need for horizontal leveling of the concrete foundation and strong fastening between the concrete foundation and the wooden vertical members. If a method that satisfies these two requirements is developed, it will be possible to reduce the complexity of construction and shorten the construction period, thereby enabling stable construction. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Korean published utility model no. 2014-0001977 [Patent Document 2] Korean Patent Registration No. 10-2275170 [Patent Document 3] Korean Patent Registration No. 10-2328651 [Patent Document 4] Korean Patent Registration No. 10-2339681 Summary of the Invention [Problem to be solved by the invention]

[0012] The present invention has been made to solve the above problems.

[0013] Specifically, we propose a method to level the concrete foundation and to firmly fasten the concrete foundation to the wooden vertical members. [Means for solving the problem]

[0014] A first embodiment of the present invention for solving the above problem is a horizontal leveling fastening method for a concrete foundation 30 and a wooden vertical member 10, the method including: (a) drilling n anchor holes 35 at predetermined positions in the concrete foundation 30, where n is a natural number equal to or greater than 2; (b) installing a post-installed anchor 200 in each of the anchor holes 35; and (c) fastening nuts 240 to thread-shaped anchor heads 230 located at the top of the post-installed anchors 200, the nuts 240 being fastened so that the top surfaces of the n nuts 240 are aligned with a reference plane X1. (d) preparing n wooden vertical members (10) each having an insertion hole formed on the underside thereof into which a nut (240) is inserted; (e) installing the n wooden vertical members (10) by moving them horizontally so that a nut (240) is inserted into the insertion hole formed on the underside of each of the n wooden vertical members (10), wherein the moving direction of each of the n wooden vertical members (10) is one of two or more moving directions; and (f) filling the space between the concrete foundation (30) and the underside of the nut (240) with a predetermined member.

[0015] Furthermore, the step (f) according to the present invention is preferably a step (f1) of filling the space between the concrete foundation 30 and the lower surface of the nut 240 with non-shrinkage mortar.

[0016] Furthermore, the step (f) according to the present invention is preferably a step (f2) of filling the space between the concrete foundation 30 and the lower surface of the nut 240 with a wedge-shaped wooden washer plate 270.

[0017] Furthermore, the horizontal leveling fastening method for a concrete foundation and a wooden vertical member according to the present invention preferably further includes, after step (c), step (c1) of cutting off the portion (A) of the anchor head 230 that protrudes upward from the top surface of the nut 240.

[0018] Furthermore, it is preferable that the nut 240 according to the present invention further includes an epoxy bag 250 on the upper side, and the step (e) further includes the step (e1) of horizontally moving and installing the wooden vertical members 10 so that the nut 240 is inserted into the insertion hole formed on the underside of each of the wooden vertical members 10, and the epoxy bag 250 is expanded to fill the insertion hole with epoxy.

[0019] Furthermore, after step (e1) according to the present invention, it is preferable that (e2) the epoxy bag 250 is expanded, so that the epoxy fills the insertion hole, and the remaining epoxy flows down along the anchor body 210 of the post-installed anchor 200 to further fill the space between the anchor hole 35 and the post-installed anchor 200.

[0020] Furthermore, it is preferable that the horizontal leveling fastening method for a concrete foundation and a wooden vertical member according to the present invention further includes, after step (b), a step of (b1) preparing n brackets 260 having an L-shape or a U-shape and having holes on the underside that are the same size as the anchor holes 35 or larger than the anchor holes 35, and arranging the brackets 260 above each of the anchor holes 35 so that the holes in the brackets 260 are positioned above the anchor holes 35.

[0021] Furthermore, the nut 240 according to the present invention is preferably in the form of a hexagonal truncated pyramid, tapering downward in width.

[0022] Furthermore, the insertion hole of the wooden vertical member 10 according to the present invention is preferably a tapered trapezoid whose width decreases downward.

[0023] Furthermore, it is preferable that the number of moving directions when installing the n wooden vertical members 10 according to the present invention is four, and the four moving directions are mutually perpendicular on a horizontal plane. [Effects of the Invention]

[0024] According to the present invention, the horizontal planes of the wooden vertical members are always aligned even if the concrete foundation is very uneven, thereby significantly improving the structural stability of wooden buildings.

[0025] At the same time, since leveling of concrete foundations can be achieved simply by aligning the bottom surfaces of the already fastened wooden vertical members, it is as simple as using level-marked rebars in the foundations of reinforced concrete buildings, and is intuitively understood by workers. Therefore, even unskilled workers can easily perform leveling.

[0026] The construction period is shortened and economical because the concrete foundation and wooden vertical members are fastened together and the concrete foundation is leveled at the same time. In particular, the insertion holes for the wooden vertical members can be manufactured in the factory, which is even more economical.

[0027] The use of epoxy bags can improve the connection strength between the wooden vertical member and the post-installed anchor. Increasing the amount of epoxy placed in the epoxy bag and allowing the epoxy to flow downward along the anchor body can also improve the connection strength between the post-installed anchor and the concrete foundation.

[0028] By removing the anchor head protruding from the nut, the difficulty of machining the wooden uprights can be reduced. Alternatively, anchor head holes can be pre-machined in the wooden uprights at a factory, eliminating the need to remove the anchor heads on-site, thereby shortening construction time. [Brief explanation of the drawings]

[0029] [Figure 1] 1 shows a wooden upright and a concrete foundation fastened together by the method of the present invention. [Figure 2] 1 shows a wooden upright and a concrete foundation fastened together by the method of the present invention. [Figure 3] FIG. 2 is an enlarged view of the lower part of a wooden upright used in the method of the present invention. [Figure 4] FIG. 1 shows a post-installed anchor used in the method of the present invention. [Figure 5] 1 is a flow chart illustrating the method of the present invention. [Figure 6] 1 is a cross-sectional view of a wooden upright and a concrete foundation fastened together by the method of the present invention. [Figure 7] 1 is a cross-sectional view of a wooden upright and a concrete foundation fastened together by the method of the present invention. [Figure 8] FIG. 10 shows a wooden vertical member and a concrete foundation fastened together according to a second embodiment of the present invention. [Figure 9] FIG. 10 is a cross-sectional view of a wooden vertical member and a concrete foundation fastened together according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view of a wooden vertical member and a concrete foundation fastened together according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. When assigning reference numerals to components in each drawing, the same reference numerals will be assigned to the same components as far as possible, even if they appear in different drawings. Furthermore, when describing the present invention, if it is determined that a detailed description of related publicly known configurations or functions would obscure the gist of the present invention, such detailed description will be omitted.

[0031] In describing the components of the embodiments of the present invention, reference numerals such as 1, 2, i), ii), a), b) are used. These reference numerals are merely used to distinguish the components from other components, and do not limit the essence, order, or sequence of the components. In this specification, when a part "includes" or "has" a certain component, it does not mean that other components are excluded, but rather that the part may further include other components, unless otherwise specified.

[0032] In the present invention, the dimensions of the wooden uprights 10 and post-installed anchors 200 are not shown in actuality, and some components are shown enlarged or reduced for ease of explanation.

[0033] Explanation of the concept of the present invention The present invention proposes a method for leveling a concrete foundation 30 by first fastening a wooden vertical member 10 to a concrete foundation 30 that has not been leveled, is not level, and is uneven, and then leveling is performed by adjusting the level using the wooden vertical member 10 as a reference (more accurately, horizontal leveling is performed with the top surface of a nut 240 inserted into the wooden vertical member 10 at a certain height as the center), and then filling the space between the bottom surface of the horizontally leveled wooden vertical member 10 and the top surface of the concrete foundation 30 with non-shrink mortar.

[0034] In other words, the present invention proposes a method of fastening the concrete foundation 30 to the wooden vertical members 10 and leveling the concrete foundation 30 at the same time.However, unlike the conventional method of first leveling the concrete foundation 30 and then fastening the wooden vertical members 10 to the leveled concrete foundation 30, the present invention proposes a method of installing the wooden vertical members 10 so that the horizontal plane is aligned based on the wooden vertical members 10 and then leveling the concrete foundation 30.

[0035] This allows the horizontal plane of the wooden vertical members 10 to be aligned even on uneven concrete foundations 30, greatly improving the structural stability of wooden buildings and greatly reducing the difficulty of leveling the concrete foundations 30. As two functions are achieved at once, construction time is shortened and it is economical.

[0036] A specific method will be described below with reference to the drawings.

[0037] Description of the First Embodiment A coupling assembly according to a first embodiment of the present invention will be described with reference to FIGS.

[0038] The wooden vertical members 10 are the basic structure of a building, and may be parts that support the building's load, such as columns and load-bearing walls, or parts that do not support the building's load, such as curtain walls, where accurate vertical construction is important (see Figures 1 and 2).

[0039] There is no limit to the number of wooden vertical members 10, but in a typical wooden building, there are two or more. Hereinafter, the number will be referred to as n (n is a natural number equal to or greater than two). In the figure, the wooden vertical members 10 are shown to include a first wooden vertical member 11 to a fourth wooden vertical member 14, but the number can be changed as appropriate depending on the shape and structure of the building.

[0040] An insertion hole for connecting to a post-installed anchor 200 is formed on one surface of the lower end of the wooden vertical member 10 (see FIG. 3). The insertion hole is recessed inward from one surface of the lower end of the wooden vertical member 10 to a predetermined depth d. The depth d of the insertion hole is formed to be smaller than the length L or width W of the wooden vertical member 10. The depth d of the insertion hole is preferably half the length L of the wooden vertical member 10. In this way, when the nut 240 of the post-installed anchor 200 is fully inserted into the insertion hole, the nut 240 is positioned in the center of the inside of the wooden vertical member 10, preventing eccentricity and ensuring stability.

[0041] In certain embodiments, a vertically extending anchor head hole (not shown) into which the anchor head 230 is inserted may be further formed above the insertion hole of the wooden upright 10. This is used in embodiments in which the protruding portion of the anchor head 230 is not removed.

[0042] On the other hand, the wooden vertical member 10 is formed so that the insertion hole is open in the direction of movement of the wooden vertical member 10. The direction of movement of the wooden vertical member 10 will be described later.

[0043] The concrete foundation 30 is a foundation portion of a wooden building constructed using wooden vertical members 10. As will be described later, the concrete foundation 30 has anchor holes 35 drilled therein into which post-installed anchors 200 are inserted.

[0044] The post-installed anchor 200 is a type of concrete anchor that is installed after the concrete has cured and hardened (see Figure 4). The post-installed anchor 200 has a shorter construction period and lower manufacturing and installation costs than chemical anchors, which has the effect of shortening the overall construction period and reducing overall costs when constructing wooden buildings. In addition, the size of the hole into which the post-installed anchor is inserted is smaller than that of chemical anchors, which has the effect of preventing the anchor from tilting, thereby improving safety.

[0045] The post-installed anchor 200 includes an anchor body 210, a sleeve 220 that is installed at the lower end of the anchor body 210 and expands when inserted into the anchor hole 35, thereby improving fastening strength, and an anchor head 230 that is installed at the top of the anchor body 210 and has a thread formed thereon.

[0046] A nut 240 is inserted into the threads of the anchor head 230 .

[0047] Although there are no restrictions on the shape of the nut 240, it is preferable that the nut 240 be shaped so that it can be inserted horizontally into the insertion hole of the wooden vertical member 10 as it moves horizontally. For example, as shown in Figure 3, if the shape of the insertion hole of the wooden vertical member 10 decreases in width as it goes downward, it is preferable that the shape of the nut 240 is also a trapezoid whose width decreases as it goes downward. In this case, it is preferable that the heights of the insertion hole of the wooden vertical member 10 and the nut 240 correspond to each other.

[0048] In one embodiment, the nut 240 has a trapezoidal shape that narrows downward and a hexagonal truncated pyramid shape that is hexagonal in plan view. If the insertion hole of the wooden vertical member 10 is a square truncated pyramid shape as shown in Figure 3, when the nut 240 is inserted into the insertion hole of the wooden vertical member 10, a space is created between the square truncated pyramid and the hexagonal truncated pyramid. This space facilitates movement of the wooden vertical member 10, but it also reduces strength. Therefore, it is preferable to fill this space with an adhesive such as epoxy to improve strength. For this reason, an epoxy bag 250 is provided above the nut 240.

[0049] The epoxy bag 250 includes an outer shell that is easily broken by impact and contains an adhesive such as epoxy. When the wooden vertical member 10 is moved and the nut 240 is inserted into the insertion hole of the wooden vertical member 10, the outer shell of the epoxy bag 250 expands, and the epoxy inside flows out. The epoxy first fills the space between the insertion hole of the wooden vertical member 10 and the nut 240, thereby improving the fastening strength.

[0050] The amount of epoxy contained in the epoxy bag 250 is set to correspond to the volume of the space between the insertion hole of the wooden vertical member 10 and the nut 240. In another embodiment, the amount of epoxy contained in the epoxy bag 250 is set to be greater than the volume of the space between the insertion hole of the wooden vertical member 10 and the nut 240. In this case, the epoxy fills the entire volume of the space between the insertion hole of the wooden vertical member 10 and the nut 240 and then flows downward along the anchor body 210, which also fills the space between the post-installed anchor 200 and the anchor hole 35 (see FIG. 7 ), thereby improving the strength between the post-installed anchor 200 and the concrete foundation 30.

[0051] In another embodiment, the nut 240 may be shaped like a square pyramid rather than a hexagonal pyramid (left side of FIG. 4). That is, since the shape and size of the insertion hole of the wooden vertical member 10 are substantially identical to those of the nut 240, the nut 240 can be inserted without leaving any residual space in the insertion hole. In this case, an epoxy bag 250 is also provided, and the epoxy does not fill the space between the insertion hole of the wooden vertical member 10 and the nut 240, but flows along the anchor body 210 to fill the space between the post-installed anchor 200 and the anchor hole 35.

[0052] The fastening method according to the first embodiment will be described in more detail with reference to FIG.

[0053] The positions on the concrete foundation 30 where the n wooden vertical members 10 will be fastened are determined in advance, and n anchor holes 35 are drilled (S510). The size of the anchor holes 35 is such that the post-installed anchors 200 can be inserted and fixed. The depth of the anchor holes 35 is such that the anchor heads 230 protrude when the post-installed anchors 200 are inserted.

[0054] Next, post-installed anchors 200 are installed in each of the anchor holes 35 (S520). When the post-installed anchors 200 are inserted into the anchor holes 35, the sleeves 220 expand during the insertion process, firmly securing the post-installed anchors 200 within the anchor holes 35. The anchor heads 230 protrude upward from the top surface of the concrete foundation 30. This state is shown in Figure 6. Because this is before the concrete foundation 30 has been leveled, when viewed from the outside, the heights of the top surfaces of the anchor heads 230 do not match, as shown in Figure 6.

[0055] Next, nuts 240 are tightened onto the anchor heads 230 of each post-installed anchor 200 (S530). Here, the tightening depth of the nuts 240 is adjusted. That is, a long level is placed on the top surface of the nuts 240, and while watching the level, the nuts 240 are tightened so that their top surfaces reach the same reference plane X1. Therefore, some of the nuts 240 are in contact with the concrete foundation 30 (left side of FIG. 6), and other nuts 240 are not in contact with the concrete foundation 30 (right side of FIG. 6).

[0056] Next, the portion (A) of the anchor head 230 that protrudes upward from the upper surface of the nut 240 is cut off (S540). In certain embodiments, step S540 may be omitted.

[0057] Next, n wooden vertical members 10 are prepared, each having an insertion hole formed on its underside into which a nut 240 is inserted. In a specific embodiment, vertically extending anchor head holes (not shown) into which an anchor head 230 is inserted are further formed in the wooden vertical members 10.

[0058] Next, the wooden vertical members 10 are moved in a predetermined direction, and the wooden vertical members 10 are connected to the post-installed anchors 200 (S550). That is, the wooden vertical members 10 are moved horizontally and installed so that the nuts 240 are inserted into the insertion holes formed on the undersides of the n wooden vertical members 10.

[0059] Here, it is preferable that there are two or more movement directions for the n wooden vertical members 10. In other words, it is preferable that the movement direction of each of the n wooden vertical members 10 is one of two or more movement directions. In this way, by making the movement directions of the wooden vertical members 10 different directions, it is possible to prevent all of the wooden vertical members 10 from coming off the post-installed anchors 200 when an external force is applied in one direction due to an earthquake or the like.

[0060] 1 and 2, an example will be described in which four wooden vertical members 10 are used. In this case, n is 4, and the four movement directions are mutually perpendicular on a horizontal plane.

[0061] Specifically, the first wooden vertical member 11 has an insertion hole that opens in a first direction, and is coupled to the post-installed anchors 200 along the first direction. The first direction is parallel to the ground and toward the inside of the concrete foundation 30. Similarly, the second wooden vertical member 12 has an insertion hole that opens in a second direction, and is coupled to the post-installed anchors 200 along the second direction. The second direction is parallel to the ground, toward the inside of the concrete foundation 30, and perpendicular to the first direction. The third wooden vertical member 13 has an insertion hole that opens in a third direction, and is coupled to the post-installed anchors 200 along the third direction. The third direction is parallel to the first direction but opposite to the first direction. The fourth wooden vertical member 14 has an insertion hole that opens in a fourth direction, and is coupled to the post-installed anchors 200 along the fourth direction. The fourth direction is parallel to the second direction but opposite to the second direction. Therefore, the first wooden vertical member 11, the second wooden vertical member 12, the third wooden vertical member 13, and the fourth wooden vertical member 14 are all connected to multiple post-installed anchors 200 in different directions. This configuration ensures that the sum of the stresses in the diagonally arranged wooden vertical members is zero. When a load from a roof or other source is applied to all of the wooden vertical members 11, 12, 13, and 14 connected to the concrete foundation 30, the first wooden vertical member 11 receives a pressure force in the first direction, generating stress in the opposite direction to the first direction. At the same time, the third wooden vertical member 13 receives a pressure force in the third direction, generating stress in the opposite direction to the third direction. In other words, the sum of the stresses generated by the first wooden vertical member 11 and the third wooden vertical member 13 is zero. Therefore, the first wooden vertical member 11 and the third wooden vertical member 13 establish force equilibrium on an axis parallel to the first direction. Similarly, the sum of the stresses generated by the second wooden vertical member 12 and the fourth wooden vertical member 14 is zero. Therefore, the forces are balanced on the axis parallel to the second direction. This means that the sum of the forces on all axes is zero, which has the advantage that the wooden building will not tilt in any one direction and can stably support the load of the building.

[0062] Once the fastening of the wooden vertical members 10 is completed in this manner, the wooden vertical members 10 are classified as either in contact with the concrete foundation 30 or not, depending on whether the nuts 240 are in contact with the concrete foundation 30. As shown in Figure 7, some of the wooden vertical members 10 are in contact with the concrete foundation 30 (left side of Figure 7), and other wooden vertical members 10 are not in contact with the concrete foundation 30 (right side of Figure 7).

[0063] Therefore, if a gap is created below the wooden vertical member 10 due to the lack of contact, i.e., if there is a gap between the underside of the concrete foundation 30 and the nut 240, the gap is filled with non-shrinkage mortar (S560). Here, the worker pours the mortar in alignment with the underside of the wooden vertical member 10. This allows for easy pouring, similar to pouring concrete using rebar with level markings in reinforced concrete buildings. Even if there are dozens or hundreds of wooden vertical members 10, the worker simply finds only those wooden vertical members 10 whose undersides are not in contact with the top surface of the concrete foundation 30, and then pours non-shrinkage mortar to fill the gap below the wooden vertical members 10, completing horizontal leveling. Therefore, after pouring and curing the non-shrinkage mortar, the horizontal plane of the concrete foundation 30 naturally coincides with the foundation horizontal plane X2, as shown in Figure 7.

[0064] Description of the second embodiment The second embodiment of the present invention is a method of using an iron bracket 260 to further securely fasten the wooden vertical member 10. This will be explained with reference to Figures 8 and 9. Explanation of the same parts as in the first embodiment will be omitted.

[0065] The bracket 260 covers the underside of the wooden vertical member 10 and may be L-shaped or U-shaped as shown in Figures 8 and 9. This allows the wooden vertical member 10 to move more smoothly toward the concrete foundation 30 when subjected to horizontal force.

[0066] The bracket 260 is installed between the nut 240 and the concrete foundation 30 so that the anchor head 230 passes through. For this purpose, a hole of the same size as the anchor hole 35 or a hole larger than the anchor hole 35 is formed in the lower surface of the bracket 260.

[0067] The method according to the second embodiment further includes, after step S510 of FIG. 5, a step of arranging brackets 260 above each of the anchor holes 35 such that the holes of the brackets 260 are positioned above the anchor holes 35.

[0068] The installation direction of the brackets 260 is naturally determined taking into consideration the direction of movement of the wooden vertical members 10, so as to be open in that direction. For example, in the embodiment described with reference to Figures 1 and 2, the bracket 260 installed on the first wooden vertical member 11 is positioned so as to be open in the first direction, taking into consideration the direction of movement of the first wooden vertical member 11. The brackets 260 installed on the second wooden vertical member 12, the third wooden vertical member 13, and the fourth wooden vertical member 14 should also be positioned taking into consideration the direction of movement of those vertical members.

[0069] Description of the third embodiment The third embodiment of the present invention is a dry construction method that does not use non-shrinkage mortar. This will be explained with reference to Figure 10. Explanation of the same parts as in the first embodiment will be omitted.

[0070] 5, steps S510 to S550 are the same, but in step S560, a different material is used to fill the space between the concrete foundation 30 and the underside of the nut 240. If the space is not large, that is, if the concrete foundation 30 is in good condition after casting and curing and there is no significant need for leveling, then a wedge-shaped wooden washer plate 270 is used instead of non-shrinkage mortar.

[0071] In the third embodiment, once the installation of the wooden vertical member 10 is complete, if the gap between the concrete foundation 30 and the underside of the nut 240 is not large, a wedge-shaped wooden washer plate 270 made to an appropriate thickness is inserted into the gap without pouring non-shrinkage mortar. Because it is wedge-shaped, it can be inserted into the gap on-site, and the wood itself can sufficiently resist the axial force (i.e., the load from above).

[0072] The above-described embodiments are examples of implementing the present invention, and a person skilled in the art to which the present invention pertains may make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate the technical idea of ​​the present invention, but are not intended to limit the scope of the technical idea of ​​the present invention. In other words, the scope of protection of the present invention should be interpreted by the scope of the claims, and any technical idea within the scope equivalent thereto should be interpreted as being included in the present invention. [Explanation of symbols]

[0073] 10 Wooden vertical members 30 Concrete Foundation 35 Anchor Hole 200 Post-installed anchor 210 Anchor body 220 Sleeve 230 Anchorhead 240 Nut 250 epoxy bags 260 Bracket 270 Wedge-shaped wooden washer plate X1 reference plane X2 Foundation horizontal plane

Claims

1. A method for fastening a concrete foundation (30) and a wooden vertical member (10) for horizontal leveling, comprising: (a) drilling n anchor holes (35) at predetermined positions in the concrete foundation (30), where n is a natural number equal to or greater than 2; (b) installing post-installed anchors (200) into each of the anchor holes (35); (c) fastening a nut (240) to each thread-shaped anchor head (230) located at the top of the post-installed anchor (200), wherein the nuts (240) are fastened so that the top surfaces of the n nuts (240) coincide with a reference plane (X1); (d) preparing n pieces of the wooden vertical members (10), each having a recess formed in the lower surface in the horizontal length direction, a partially open side surface, and an insertion hole formed in the lower surface into which the nut (240) is inserted; (e) a step of horizontally moving and installing the n wooden vertical members (10) so that the nuts (240) are inserted into the open sides of the insertion holes formed on the undersides of each of the n wooden vertical members (10), wherein the moving direction of each of the n wooden vertical members (10) is one of two or more moving directions; (f) filling a space between the concrete foundation (30) and the lower surface of the nut (240) with a predetermined material; A method for fastening a concrete foundation and wooden vertical members for horizontal leveling.

2. The step (f) includes: (f1) filling the space between the concrete foundation (30) and the underside of the nut (240) with non-shrinkage mortar; 2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

3. The step (f) includes: (f2) filling the space between the concrete foundation (30) and the underside of the nut (240) with a wedge-shaped wooden washer plate (270); 2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

4. After the step (c), (c1) further comprising the step of cutting off a portion (A) of the anchor head (230) that protrudes upward from the upper surface of the nut (240), 2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

5. The nut (240) further includes an epoxy bag (250) on its upper side; The step (e) comprises: (e1) the method further includes the step of horizontally moving and installing the wooden vertical members (10) so that the nuts (240) are inserted into the open sides of the insertion holes formed on the undersides of the wooden vertical members (10), and expanding the epoxy bag (250) to fill the insertion holes with epoxy.

2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

6. After the step (e1), (e2) the step of expanding the epoxy bag (250) so that the epoxy fills the insertion hole and the remaining epoxy flows down along the anchor body (210) of the post-installed anchor (200) to further fill the space between the anchor hole (35) and the post-installed anchor (200); 6. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 5.

7. After the step (b), (b1) further comprising the step of preparing n brackets (260) each having an L-shape or a U-shape and having holes on the underside thereof the same size as the anchor holes (35) or larger than the anchor holes (35), and arranging the brackets (260) above the respective anchor holes (35) so that the holes of the brackets (260) are positioned above the anchor holes (35); 2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

8. The nut (240) is hexagonal pyramidal in shape and tapered in width downward.

2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

9. The insertion hole of the wooden vertical member (10) is a tapered trapezoid whose width decreases downward. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 8.

10. The number of moving directions when installing the n wooden vertical members (10) is four; The four movement directions are perpendicular to each other on a horizontal plane.

2. The method for fastening a concrete foundation and a wooden vertical member for horizontal leveling according to claim 1.

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