JP2017072008A - Bearing wall structure of wooden building and construction method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bearing wall structure and a construction method capable of increasing strength of a bearing wall in a wooden building of a framework construction method.SOLUTION: One bearing wall is constituted of an object juxtaposed by overlapping a pair of bearing wall panels. On one bearing wall panel, an assembly body formed by fastening an inside structural face bar 2 in advance, is manufactured on one surface of a frame body 1 constituted of a plurality of bearers 1a, 1b, 1c and 1d, and the assembly body is fastened between required columns so that the inside structural face bar 2 is positioned on the inside of a wall of a building. Afterwards, an outside structural face bar 3 is applied to the assembly body from the outside (the indoor side) of the wall, and the outside structural face bar 3 is fastened to the other surface of the frame body 1, and the one bearing wall panel is assembled in the building. At least the inside structural face bar 2 is fastened to one surface of the frame body 1 in a column-exposed wall specification. The outside structural face bar 3 is fastened to the other surface of the frame body 1 in the column-exposed wall specification or a stud wall specification.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a method for constructing a bearing wall in a wooden structure of a frame construction method, and more particularly to a bearing wall structure with doubled strength and a method for constructing the same.

  In recent years, four-story wooden buildings have been approved. As a condition for approval of a four-story wooden building, one with a high bearing wall magnification is required. In addition, even in the case of three floors or less, in order to ensure the floor plan of the building floor, load-bearing walls are concentrated on the outer wall and the internal partition walls can be rearranged as non-bearing walls. There is a design method, but in this case as well, the bearing wall must have a high magnification. In the following Patent Documents 1 to 3, a structure having double structural face materials is shown in order to increase the strength of the bearing wall. In Patent Document 1, a true-wall type bearing wall with one structural face material and a large-wall type bearing wall with one structural face material are doubled between two pillars. Thus, a double load-bearing wall structure is formed. In Patent Literature 2, dovetail grooves are formed in two vertical stripes on the wall surface forming side surface of a pillar, and a wall panel is fitted into each dovetail groove to constitute a double bearing wall. However, in this configuration, since the dovetail groove must be formed in two vertical stripes, the processing is complicated and the installation procedure is complicated, which increases the cost. In Patent Document 3, a first load bearing structure is formed by fixing a structural surface material for an outer column in a large wall form to a pair of outer columns, and between a pair of inner columns provided inside the outer column. The second load-bearing structure is formed by fixing the structural face material for the inner pillar in the true wall form through the base material. In this case, the structural surface material for the outer column and the structural surface material for the inner column overlap with no gap. In the configuration of Patent Document 2, a pair of outer pillars for the first load-bearing structure and a pair of inner pillars for the second load-bearing structure are necessary, and there are a total of four in one double wall structure. The cost becomes high because the pillars of the above are required. In any of Patent Documents 1 to 3, it is impossible to provide a load-bearing wall structure having strength that can be used as a load-bearing wall for a four-story wooden building.

JP-A-9-250192 JP 2000-179043 A JP2015-121047

  The present invention has been made in view of the above points, and is intended to provide a load-bearing wall structure with doubled strength at a low cost in a wooden structure of a frame construction method, and a construction method thereof. It is something to be offered.

  The load-bearing wall structure according to the present invention includes a pair of load-bearing wall panels arranged side by side, and each of the load-bearing wall panels includes a frame body constituted by a plurality of receiving members, and an inner side of the wall. An inner structural face material fastened to one surface of the frame body so as to be positioned, and an outer structural face material fastened to the other surface of the frame body so as to be located outside the wall, at least the inner structure The face material is fixed to one surface of the frame body with a true wall specification. According to this, since a bearing wall is comprised by what overlapped and paralleled a pair of bearing walls, intensity | strength can be doubled. In addition, one load-bearing wall panel has a structure (double structure) in which the inner structural surface material is fixed to one surface of the frame and the outer structural surface material is fixed to the other surface of the same frame. The strength can be further doubled while being simple and low-cost. Thus, according to the present invention, the load-bearing wall in which the structural surface material is quadruple is formed as a whole. Can be provided.

  In a preferred embodiment, the wooden building columns are doubled at the place where the load-bearing wall structure is provided, and the pair of load-bearing wall panels are juxtaposed between the doubled columns. Like that. As a result, the load applied to each column head and column base of the doubled column can be dispersed. Therefore, even if the strength of the entire load-bearing wall structure is doubled according to the present invention, the strength of the joint hardware, etc. at the junction of each column There is no need to enhance

  Further, in the construction method of the load-bearing wall structure according to the present invention, the frame body has a true wall specification as viewed from the inner structural face material side in a state where the inner structural face material is previously fixed to one surface of the frame body. Assembling one load-bearing wall panel by the step of fastening the outer structural surface material to the other surface of the frame body with a true wall specification or a large wall specification. Consists of. According to this, since the frame body is fixed to the pillar of the wooden building in a state where the inner structural surface material is previously fixed to one surface of the frame body, the frame of the inner structural surface material positioned inside the wall. It can be easily attached to the body. Therefore, it is possible to provide a load-bearing wall structure having a structure in which the structural face materials are quadruple as a whole, efficiently, simply, and inexpensively.

1 is a cross-sectional view partially showing a load bearing wall structure according to an embodiment of the present invention. The disassembled perspective view which shows the structural example of the one load-bearing wall panel in FIG.

  FIG. 1 is a partial cross-sectional view showing a bearing wall structure according to an embodiment of the present invention. In a wooden four-story building, a load-bearing wall with a strength higher than a simple double wall is required. Therefore, first, as a pillar of the building, for example, a strengthening measure (double pillar) is taken such that two structural pillars with a direction of 10.5 cm are arranged side by side. In FIG. 1, reference numerals 4, 4 ′, and 5, 5 ′ indicate pillars each having a direction of 10.5 cm, for example, in cross section. A space between the pair of double columns 4, 4 ′ and 5, 5 ′ is a wall, and the wall thickness w corresponds to the thickness of the two columns 4, 4 ′. Between the pair of double pillars 4, 4 'and 5, 5', a pair of load-bearing wall panels 10, 10 'overlap and are arranged side by side. Each of the load-bearing wall panels 10 and 10 'includes a frame 1 and 1', an inner structural surface material 2 and 2 ', and an outer structural surface material 3 and 3'. For convenience, the outer structural face materials 3 and 3 'are shown separated from an assembly comprising the frame bodies 1 and 1' and the inner structural face materials 2 and 2 '.

  FIG. 2 is an exploded perspective view showing a configuration example of one load bearing wall panel 10. The load-bearing wall panel 10 has a double wall structure in which the inner structural face material 2 and the outer structural face material 3 are fastened to both sides of the frame 1. The frame 1 includes a pair of left and right receiving members 1a and 1b, a pair of upper and lower receiving members 1c and 1d, and one or more columnar members 1e. In addition, when the lateral width of the load-bearing wall panel 10 for one sheet is short (for example, 45 cm or less), the stud member 1e can be omitted. The inner structural face material 2 and the outer structural face material 3 are made of a structural face material having an appropriate thickness (for example, 12 mm). The inner structural face material 2 is fastened to one surface of the frame body 1 with a true wall specification so as to be located inside the wall in the built state. The outer structural face material 3 is fixed to one surface of the frame body 1 with a true wall specification or a large wall specification so as to be located outside the wall (for example, the indoor side) in the built state.

  When the inner structural face material 2 is fastened to the frame body 1, the face material 2 must be fastened to the frame body 1 by driving nails from the surface side of the inner structural face material 2. However, since the inner structural face material 2 is located inside the building wall (contact surface of the double load-bearing wall panels 10 and 10 '), at the construction site (the construction site of the wall at the construction site), It is difficult to nail the inner structural face material 2. Therefore, an assembly composed of the inner structural surface material 2 fixed to one surface of the frame body 1 (in a nail) in advance outside the construction site (a workshop near the construction site or a remote factory) It should be manufactured. In FIG. 2, the assembly which consists of what fastened the inner structure surface material 2 to the one surface of the frame 1 in that way is shown. This assembly is transported to the building site and installed between the required columns 4 and 5 of the building and the beam and foundation. FIG. 1 is a cross-sectional view showing a state in which the assembly is installed between a pair of columns 4 and 5. To fix the assembly to the building, the right and left receiving materials 1a and 1b are fixed to the columns 4 and 5 by appropriately nailing from the inside, and the upper and lower receiving materials 1c and 1d are fixed to the beam and the base. To do. The inner structural face material 2 fixed to the frame body 1 is fixed to one surface of the frame body 1 with a true wall specification so that it can be inserted between the columns 4 and 5 and the beam and the base from the indoor side (that is, And arranged so as not to protrude from the outer periphery of the frame 1).

  After the assembly composed of the frame body 1 and the inner structural surface material 2 is fixed between the required columns 4 and 5 as described above, the outer structural surface material 3 is applied to the assembly body, and the frame body 1 It is fixed with nails. Since the fixing part of the outer structural face material 3 to the assembly is the outside of the wall, that is, the indoor side, it is easy to apply the outer structural face material 3 to the assembly from the indoor side and nail it. Can do.

  The other load-bearing wall panel 10 ′ is configured in the same manner as the load-bearing wall panel 10 described above with reference to FIG. 2 and is fixed between the required columns 4 ′ and 5 ′.

  In the example shown in FIG. 1, the frame surface of the frame body 1, 1 ′ outside the wall is recessed by the thickness of the structural surface material from the column surface of the columns 4, 4 ′, 5, 5 ′, and the outer structure The outer peripheral face material 3, 3 ′ is a true wall because the outer circumference of the face material 3, 3 ′ is such that the outer dimension of the face material 3, 3 ′ fits between the columns 4, 4 ′, 5 ′, and the beam and the base. It can be fixed to the other surface of the frame 1, 1 'according to specifications. However, the present invention is not limited to this, and the outer structural face materials 3, 3 'may be fixed to the other surface of the frame 1, 1' with a large wall specification. In that case, the frame surface of the frame 1, 1 ′ on the outside of the wall is made to substantially coincide with the column surface of the columns 4, 4 ′, 5, 5 ′, and the outside structural surface material 3, 3 ′ It is assumed that the surrounding dimensions are such that the columns 4, 4 ′, 5, 5 ′ and the beam and the base protrude appropriately.

  According to the load-bearing wall structure as described above, since the pair of load-bearing wall panels 10 and 10 ′ are overlapped and juxtaposed, the strength can be doubled. In addition, one load-bearing wall panel 10, 10 'fastens the inner structural surface material 2, 2' to one surface of the frame 1, 1 ', and the outer structural surface material 3 to the other surface of the same frame 1, 1'. Since it has a structure (double structure) for fastening 3 ′, the strength can be further doubled while the structure is simple and low cost. Thus, according to the present invention, the load-bearing wall in which the structural surface material is quadruple is formed as a whole. Therefore, in a load-bearing wall that requires high magnification in a four-story wooden building or a three-story wooden building or less. It is possible to provide a bearing wall structure having sufficient strength that can be used. Further, the pillars 4, 4 ′, 5, 5 ′ of the wooden building are arranged in a double place at the place where the load-bearing wall structure according to the present invention is provided, and the pair of load-bearing wall panels 10, 10 ′ are duplicated. By making the columns 4, 4 ′, 5, 5 ′ overlap and juxtaposed, the load applied to each column head and column base of the duplexed column can be dispersed. Even if the strength of the entire wall structure is doubled, there is no need to increase the strength of the joint hardware or the like at the joints of the columns as compared to the conventional case.

1, 1 'Frames 1a, 1b, 1c, 1d Receiving material 1e Inter-column material 2, 2' Inner structural surface material 3, 3 'Outer structural surface material

The load-bearing wall structure according to the present invention is a load-bearing wall structure of a wooden structure of a wooden frame construction method, and consists of a pair of load-bearing wall panels arranged side by side, and each of the pair of load-bearing wall panels. A frame composed of a plurality of receiving materials, an inner structural surface material fastened to one surface of the frame so as to be located inside the wall, and the other of the frame so as to be located outside the wall. A structure of the wooden building at a place where the load-bearing wall structure is provided , and at least the inner structure surface material is fixed to one surface of the frame body with a true wall specification. Duplicate columns are arranged, and the pair of load-bearing wall panels are juxtaposed side by side so that the inner structural face materials contact each other back to back and each load-bearing wall panel corresponds to each structural column. that Do not. According to this, since a bearing wall is comprised by what overlapped and paralleled a pair of bearing walls, intensity | strength can be doubled. In addition, one load-bearing wall panel has a structure (double structure) in which the inner structural surface material is fixed to one surface of the frame and the outer structural surface material is fixed to the other surface of the same frame. The strength can be further doubled while being simple and low-cost. Thus, according to the present invention, the load-bearing wall in which the structural surface material is quadruple is formed as a whole, so that the load-bearing wall structure having sufficient strength that can be used for a load-bearing wall that requires high magnification such as a four-story wooden building. Can be provided.

Further, according to the present invention, the structural pillars of the wooden building are arranged in a double manner at the place where the load-bearing wall structure is provided, and the pair of load-bearing wall panels are in contact with each other between the inner structural face materials. Since the load-bearing wall panels are arranged side by side so as to correspond to each structural column, the load applied to each column head and column base of the duplexed structural column can be dispersed. Even if the strength of the entire bearing wall structure is doubled according to the present invention, there is no need to increase the strength of the joint hardware or the like at the joint portion of each structural column as compared with the past. Further, in the pair of load-bearing wall panels arranged side by side, the inner structural face materials are in contact with each other back to back and each load-bearing wall panel is arranged so as to correspond to each structural column. Since the separation distance between the outer structural face material and the inner structural face material of the load-bearing wall panel can be substantially matched to the thickness of one structural column, the joint hardware to be installed on one structural column, etc. Existing frame can be easily used, and the frame body is a structural column of the wooden building in a state where the inner structural surface material for each load-bearing wall panel is previously fixed to one surface of the frame body. Therefore, the inner structural face material located inside the wall can be easily fixed to the frame.

Further, the construction method of the load-bearing wall structure according to the present invention includes a step of doubling and arranging the structural pillars of the wooden building at the place where the load-bearing wall structure is provided, With the structural face material fixed to one surface of the frame in advance , the pair of load-bearing wall panels are in contact with each other, and the individual load-bearing wall panels correspond to individual structural columns. As shown in FIG. 1 , the step of fixing the frame body of each load-bearing wall panel to the structural pillar of the wooden building with a true wall specification as viewed from the side of the inner structural face material, and then, by a step of applying stop on the other surface of the frame body at the outer structural surface material Makabe specification or Daikabe specifications of each bearing wall panels, it consists of assembling the bearing wall panel of the pair. According to this, since the frame body is fixed to the pillar of the wooden building in a state where the inner structural surface material is previously fixed to one surface of the frame body, the frame of the inner structural surface material positioned inside the wall. It can be easily attached to the body. Therefore, it is possible to provide a load-bearing wall structure having a structure in which the structural face materials are quadruple as a whole, efficiently, simply, and inexpensively.

Claims (7)

It is a load-bearing wall structure of a wooden building with a shaft construction method, which consists of a pair of load-bearing wall panels stacked side by side,
Each of the load-bearing wall panels is
A frame composed of a plurality of receiving materials;
An inner structural face material fastened to one side of the frame so as to be located inside the wall;
A load-bearing wall structure configured to be fixed to the other surface of the frame so as to be positioned outside the wall, and at least the inner structural surface is fixed to one surface of the frame in a true wall specification. .   The load-bearing wall structure according to claim 1, wherein the frame body is fixed to a pillar of the wooden building in a state where the inner structural surface material is previously fixed to one surface of the frame body.   The bearing wall structure according to claim 1 or 2, wherein the frame includes at least one stud.   The bearing wall structure according to any one of claims 1 to 3, wherein the outer structural face material is fixed to the other surface of the frame body with a true wall specification or a large wall specification.   The pillars of the wooden building are doubled and arranged at the place where the load-bearing wall structure is provided, and the pair of load-bearing wall panels are juxtaposed in parallel between the doubled pillars. The bearing wall structure according to any one of 4. A method for constructing a load-bearing wall structure of a wooden building with a shaft construction method,
The load-bearing wall structure is formed by overlapping a pair of load-bearing wall panels in parallel.
Each of the load-bearing wall panels is
A frame composed of a plurality of receiving materials;
An inner structural face material fastened to one side of the frame so as to be located inside the wall;
An outer structural face material fixed to the other surface of the frame so as to be located outside the wall,
The construction method is as follows:
In a state where the inner structural surface material is previously fixed to one surface of the frame body, the step of fixing the frame body to the pillar of the wooden building with a true wall specification as viewed from the inner structural surface material side;
Thereafter, the one load-bearing wall panel is assembled by the step of fastening the outer structural face material to the other surface of the frame body with a true wall specification or a large wall specification.   The method according to claim 6, further comprising the step of pre-manufacturing an assembly made of the inner structural face material fixed to one surface of the frame body outside the building site.

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