Wooden building construction method

Abstract

To provide a wooden building construction method capable of preventing the rising of pillars from the foundation or lower cross members while preventing degradation of the design.SOLUTION: A wooden building construction method comprises a column base bolt arrangement step for arranging multiple column base bolts 51 corresponding to respective columns 111 in a foundation 90 so as to protrude upward from an upper surface 91 of the foundation 90, a column connection body formation step for forming a column connection body 110 to which each of the columns 111 is connected via a connection member and which has a lower insertion part 115 opening in a lower end surface of each of the columns 111 and extending vertically, a column base bolt insertion step for lowering the column connection body 110 to insert the column base bolt 51 into the lower insertion part 115, and a column base bolt fastening step for fastening the column base bolt 51 and the column 111, thereby connecting the column connection body 110 to the foundation 90.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to a construction method for wooden buildings.

Background Art

[0002] Among the traditional wooden buildings in Japan since ancient times, there are multi-story pagodas such as three-story pagodas and five-story pagodas. While it is said that there is no example of a multi-story pagoda collapsing due to an earthquake, there is an example of a multi-story pagoda collapsing by receiving a large wind pressure such as a typhoon. By receiving a large wind pressure, the columns of each floor constituting the multi-story pagoda rise from the horizontal members that support the foundation stones and the feet of the columns. At this time, if the columns of the first floor rise above a certain height, the multi-story pagoda will collapse and be completely destroyed.

[0003] Non-Patent Document 1 discloses a five-story pagoda in which a steel rod tie rod that connects a beam provided on the top floor and the foundation is additionally provided in order to suppress the lifting of the columns of each floor from the foundation and the horizontal members.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the case of the technique described in Non-Patent Document 1, since the steel rod tie rods appear inside each floor, there is a problem that the design property is impaired. Note that such problems are not limited to multi-story pagodas, and similarly occur in structures that suppress the lifting of columns from the foundation and the lifting of columns from horizontal members.

Means for Solving the Problem

[0006] Describe each aspect of the construction method of a wooden building for solving the above problems. [Aspect 1] A wooden building construction method comprising a plurality of wooden columns, a foundation or a wooden lower horizontal member that supports the lower end surface of each of the columns, and a connecting member that connects the columns to each other. In the construction method of the wooden building in which each of the columns, the foundation or the lower horizontal member, and the connecting member form a layer, A step of arranging a plurality of bolt members for column feet corresponding to each of the columns on the foundation or the lower horizontal member so as to protrude upward from the upper surface of the foundation or the lower horizontal member; A step of forming a column connecting body in which each of the columns is connected via the connecting member, and which has an insertion portion that opens at the lower end surface of each of the columns and extends in the vertical direction; A step of inserting the bolt members for column feet into the insertion portion by lowering the column connecting body; A step of connecting the column connecting body to the foundation or the lower horizontal member by fastening the bolt members for column feet and the columns. A construction method of a wooden building.

[0007] According to the same construction method, in the step of arranging the bolt members for column feet, a plurality of bolt members for column feet corresponding to each of the columns are arranged on the foundation or the lower horizontal member so as to protrude upward from the upper surface of the foundation or the lower horizontal member. Also, in the step of forming the column connecting body, each of the columns is connected via the connecting member, and a column connecting body having an insertion portion that opens at the lower end surface of each of the columns and extends in the vertical direction is formed. Further, in the step of inserting the bolt members for column feet, the column connecting body is lowered and the bolt members for column feet are inserted into the insertion portion. Then, in the step of fastening the bolt members for column feet, the column connecting body is connected to the foundation or the lower horizontal member by fastening the bolt members for column feet and the columns. For this reason, a wooden building in which the feet of a plurality of columns and the foundation or the lower horizontal member are connected via bolt members for column feet extending in the vertical direction can be easily constructed.

[0008] In addition, in a wooden building constructed by such a construction method, the uplifting force acting on the leg portion of the column is transmitted to the lower horizontal member or the foundation via the bolts for column leg portions. That is, by arranging the bolts for column leg portions at the leg portions of the columns, the columns are made to bear not only the compressive force in the vertical direction but also the tensile force in the vertical direction.

[0009] Furthermore, the bolts for column leg portions are inserted into the leg portions of the columns. For this reason, the bolts for column leg portions do not appear on the design surface. Therefore, it is possible to suppress the design property of the wooden building from being impaired by the bolts for column leg portions.

[0010] [Aspect 2] The wooden building includes a plurality of layers, a step of arranging bolts for column head portions on each of the columns so as to protrude upward from the upper end surface of the column constituting the layer, a step of forming an upper horizontal member connecting body in which a plurality of wooden upper horizontal members are connected and which has a through portion penetrating the upper horizontal member, a step of forming a lower horizontal member connecting body in which a plurality of the lower horizontal members are connected and which is arranged above the upper horizontal member connecting body, a step of inserting the bolts for column head portions into the through portion by lowering the upper horizontal member connecting body, a step of forming a horizontal member connecting body by connecting the upper horizontal member connecting body and the lower horizontal member connecting body via bolts for horizontal members extending in the vertical direction before or after the step of inserting the bolts for column head portions, a step of fastening the bolts for column head portions and the upper horizontal member to connect the horizontal member connecting body to the column connecting body, In each of the said layers, the steps of arranging bolts for column foot portions, forming column connectors, inserting bolts for column foot portions, fastening bolts for column foot portions, arranging bolts for column head portions, forming upper horizontal member connectors, forming lower horizontal member connectors, inserting bolts for column head portions through the horizontal member connectors, forming horizontal member connectors, and fastening bolts for column head portions are carried out. The construction method of the wooden building according to Embodiment 1.

[0011] According to this construction method, in the step of arranging bolts for column head portions, bolts for column head portions are arranged on each of the columns so as to protrude upward from the upper end surfaces of the columns constituting the layer. Also, in the step of forming upper horizontal member connectors, a plurality of wooden upper horizontal members are connected, and an upper horizontal member connector having a through portion penetrating the upper horizontal members is formed. Also, in the step of forming lower horizontal member connectors, a plurality of lower horizontal members are connected, and a lower horizontal member connector arranged above the upper horizontal member connector is formed. Also, in the step of inserting bolts for column head portions through the horizontal member connectors, the horizontal member connector is lowered so that the bolts for column head portions are inserted through the through portions. Also, in the step of forming horizontal member connectors, the upper horizontal member connector and the lower horizontal member connector are connected via bolts for horizontal members extending in the vertical direction, thereby forming a horizontal member connector. Then, in the step of fastening bolts for column head portions, the bolts for column head portions and the upper horizontal members are fastened, so that the horizontal member connector is connected to the column connector. Also, in each of the layers of the wooden building, the steps of arranging bolts for column foot portions, forming column connectors, inserting bolts for column foot portions, fastening bolts for column foot portions, arranging bolts for column head portions, forming upper horizontal member connectors, forming lower horizontal member connectors, inserting bolts for column head portions through the horizontal member connectors, forming horizontal member connectors, and fastening bolts for column head portions are carried out. For this reason, a wooden building having a plurality of layers in which the feet of a plurality of columns and the foundation or the lower horizontal members are connected via bolts for column foot portions extending in the vertical direction, and the horizontal member connector and the heads of a plurality of columns are connected via bolts for column head portions extending in the vertical direction can be easily built.

[0012] In addition, in a wooden building constructed by such a construction method, in the floors above the second floor, the gravitational force and the buoyancy force are sequentially transmitted to the lower horizontal member connecting body, the upper horizontal member connecting body, the column, and the lower horizontal member connecting body. Also, in the first floor, the gravitational force and the buoyancy force are sequentially transmitted to the lower horizontal member connecting body, the upper horizontal member connecting body, the column, and the foundation. That is, by arranging the bolt for column head and the bolt for column foot at the head and the foot of the column respectively, the column bears not only the compressive force in the vertical direction but also the tensile force in the vertical direction.

[0013] Also, by arranging the bolt for horizontal member between the upper horizontal member connecting body and the lower horizontal member connecting body arranged above the upper horizontal member connecting body, the axial force of the column is transmitted from the column of the directly upper layer to the column of the current layer.

[0014] Furthermore, the bolt for column foot and the bolt for column head are inserted into the foot and the head of the column respectively. For this reason, these bolts do not appear on the design surface. Therefore, it is possible to suppress the design property of the wooden building from being impaired by the bolts.

[0015] [Aspect 3] The wooden building is a multi-tower. The construction method of the wooden building according to Aspect 2.

[0016] According to the same construction method, it is possible to effectively suppress the multi-tower from collapsing due to strong winds such as typhoons while suppressing the impairment of the design property of the multi-tower. [Aspect 4] In the step of fastening the bolt for column foot, by attaching a washer and a nut to the upper end of the bolt for column foot that opens on the outer surface of the column and is exposed inside the seat recess that communicates with the insertion portion, the bolt for column foot and the column are fastened. The construction method of the wooden building according to any one of Aspects 1 to 3.

[0017] According to the isomorphic method, since washers and nuts can be attached to the upper ends of the bolts for column foot parts through the seat recesses, it is possible to easily fasten the bolts for column foot parts and the columns. Further, since only the upper ends of the bolts for column foot parts are exposed inside the seat recesses, it is possible to further suppress the design of the wooden building being impaired by the bolts for column foot parts.

Advantages of the Invention

[0018] According to the present invention, it is possible to easily construct a wooden building that can suppress the lifting of columns from the foundation or the lower horizontal members while suppressing the impairment of the design.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Embodiment for Carrying Out the Invention

[0020] Hereinafter, with reference to Figures 1 to 13, an embodiment in which the construction method of a wooden building is embodied as the construction method of a wooden triple tower (hereinafter simply referred to as a tower) will be described. As shown in Figure 1, the tower includes a first-layer assembly 100, a second-layer assembly 200, and a third-layer assembly 300 that constitute three layers (the first layer, the second layer, and the third layer). Each layer has four side faces.

[0021] Note that hereinafter, the side closer to the center of the tower and the side farther away from the center may be referred to as the inner side and the outer side, respectively. Next, the assemblies 100, 200, and 300 of each layer will be described in detail.

[0022] <First-Layer Assembly 100> As shown in Figures 3 and 6, the first-layer assembly 100 includes a column connector 110, a component connector 160, and a horizontal member connector 150.

[0023] (Column Connector 110) As shown in Figures 3, 6, and 7, the column connector 110 includes a plurality (16 in this embodiment) of wooden columns 111 erected on the upper surface of the foundation 90, and a connecting member 120 that connects the columns 111 to each other.

[0024] The 16 columns 111 are composed of 12 side columns 112 and 4 corner columns 113, and are arranged at the positions of a chessboard pattern in plan view. Four side columns 112 are provided on each side surface of the first layer. The four corner columns 113 are surrounded by the 12 side columns 112.

[0025] A wooden base 121 for connecting the columns 111 to each other is provided at the leg portions 114 of the columns 111. The base 121 is provided between adjacent side columns 112 and between adjacent corner columns 113.

[0026] The connecting member 120 includes cross members provided between adjacent side columns 112, between adjacent corner columns 113, and between an adjacent side column 112 and corner column 113. The connecting member 120 is inserted into a hole penetrating the column 111 or inserted into a hole formed on the outer surface of the column 111.

[0027] As shown in FIG. 10, a lower insertion portion 115 that opens to the lower end surface of the column 111 and extends in the vertical direction is provided at the leg portion 114 of the column 111. The lower insertion portion 115 is an elongated hole having a circular cross section. In the present embodiment, four lower insertion portions 115 are provided in one column 111. The lower insertion portions 115 are located between the central axis of the column 111 and the outer surface, and are provided at 90-degree intervals around the central axis.

[0028] A lower seating recess 116 that opens to the outer surface of the column 111 and communicates with the lower insertion portion 115 is formed at the leg portion 114 of the column 111. The lower seating recess 116 has a substantially rectangular parallelepiped internal space and communicates with the upper end of the lower insertion portion 115.

[0029] As shown in FIGS. 7 and 11, an upper insertion portion 118 that opens to the upper end surface of the column 111 and extends in the vertical direction is provided at the head portion 117 of the column 111. The upper insertion part 118 is a long hole with a circular cross-section. In the present embodiment, four or two upper insertion parts 118 are provided on one pillar 111. The upper insertion part 118 is located between the central axis and the outer surface of the pillar 111, and is provided at intervals of 90 degrees or 180 degrees around the central axis.

[0030] As shown in FIG. 11, on the pillar 111, an upper socket part 119 is formed which opens to the outer surface of the pillar 111 and communicates with the upper insertion part 118. The upper socket part 119 has a substantially rectangular parallelepiped-shaped internal space and communicates with the lower end of the upper insertion part 118.

[0031] The lower parts of the bolts 61, 62 for the column head extending in the vertical direction are inserted into the upper insertion part 118. The upper parts of the bolts 61, 62 for the column head protrude upward from the upper end surface of the pillar 111. The lower ends of the bolts 61, 62 for the column head are exposed inside the upper socket part 119. Washers 71 and nuts 72 are attached to the lower ends of the bolts 61, 62 for the column head.

[0032] Although not shown, the upper socket part 119 is subjected to the embedded timber treatment. (Foundation 90) As shown in FIGS. 2(a) and 10, the foundation 90 is a concrete structure and has a flat upper surface 91.

[0033] In the foundation 90, the lower parts of a plurality of bolts 51 for column feet extending in the vertical direction, so-called anchor bolts, are embedded. The upper parts of the bolts 51 for column feet protrude upward from the upper surface 91.

[0034] As shown in FIG. 2(b), in the present embodiment, four bolts 51 for column feet are provided corresponding to the four lower insertion parts 115 provided on the legs 114 of the pillar 111. As shown in FIG. 10, the upper part of the column base bolt 51 is inserted into the lower insertion part 115. The upper end part of the column base bolt 51 is exposed inside the lower socket part 116. A washer 71 and a nut 72 are attached to the upper end part of the column base bolt 51. Thereby, the leg part 114 of the column 111 and the foundation 90 are connected via the column base bolt 51.

[0035] Although not shown, the lower socket part 116 is subjected to the buried log treatment. (Assembly connection body 160) As shown in FIGS. 6, 9, and 11, an assembly connection body 160 is disposed above the side column 112 of the column 111.

[0036] The assembly connection body 160 includes an assembly main body 161 and a pedestal ring 165 that is disposed between the upper end surface of the side column 112 and the assembly main body 161 and forms a square frame shape as a whole. The assembly main body 161 includes a large bracket 162 and a bracket 164, and a knee brace 163 disposed on the upper surface of the large bracket 162 or the bracket 164.

[0037] The assembly main body 161 of the present embodiment is a three-handled protruding assembly, a so-called three-handled Tokyo (in the case of "To", "dou" in the wood bias, and in the case of "Kyou", "kyou" in the wood bias). The four-day column 113 is located inside the assembly connection body 160 and is connected to the assembly connection body 160.

[0038] (Horizontal member connection body 150) As shown in FIGS. 3, 6, 8, 11 to 13, the horizontal member connection body 150 includes an upper horizontal member connection body 130 and a lower horizontal member connection body 140 disposed above the upper horizontal member connection body 130.

[0039] The upper horizontal member connection body 130 is configured by connecting a plurality of wooden upper horizontal members 131, 132 and is disposed above the column connection body 110. The upper horizontal member connection body 130 forms a lattice shape as a whole.

[0040] Specifically, the upper horizontal member connector 130 has four upper horizontal members 131 extending parallel to each other and four upper horizontal members 132 extending perpendicular to the upper horizontal members 131 and parallel to each other. The joints between the upper horizontal members 131 and 132 are complementary. The upper horizontal members 131 and 132 are assembled in a grid pattern such that the heights of the upper surfaces and the lower surfaces of the upper horizontal members 131 and 132 are the same, and are supported by the upper surface of the knee brace 163 located at the uppermost stage of the assembly connector 160 and the upper surface of the four - column 113.

[0041] As shown in FIGS. 11 to 13, the upper end surface of the four - column 113 supports the portions of the lower surfaces of the inner two upper horizontal members 131 that intersect with the inner two upper horizontal members 132. As shown in FIGS. 11 and 13, the lower surface of the upper horizontal member 131 is supported by the assembly connector 160 disposed on the upper end surface of the side column 112.

[0042] As shown in FIG. 11, the upper horizontal members 131 and 132 are provided with through - portions 133 and 134 that extend in the vertical direction and penetrate the upper horizontal members 131 and 132. The upper part of the column - head bolt 61 protruding upward from the upper end surface of the side column 112 penetrates the assembly connector 160 and is inserted into the through - portion 133 that penetrates the upper horizontal member connector 130. Washers 71 and nuts 72 are mounted on the upper end portion of the column - head bolt 61 that protrudes upward from the upper surface of the upper horizontal member connector 130.

[0043] The upper part of the column - head bolt 62 protruding upward from the upper end surface of the four - column 113 is inserted into the through - portion 134 that penetrates the upper horizontal members 131 and 132. Washers 71 and nuts 72 are mounted on the upper end portion of the column - head bolt 62 that protrudes upward from the upper surface of the upper horizontal member 132.

[0044] In this way, the upper horizontal member connector 130 and the head 117 of the column 111 are connected via the column - head bolts 61 and 62 that extend in the vertical direction and are inserted into the head 117. As shown in FIGS. 3, 6, 8, 11 to 13, the lower horizontal member connector 140 is configured by connecting a plurality of wooden lower horizontal members 141 and 142, and is disposed above the upper horizontal member connector 130. The lower horizontal member connector 140 has a lattice shape as a whole.

[0045] Specifically, the lower horizontal member connector 140 has four lower horizontal members 141 extending in parallel to each other, and four lower horizontal members 142 extending orthogonally to the lower horizontal members 141 and parallel to each other. The lower horizontal members 142 are supported on the upper surfaces of the lower horizontal members 141. The joints between the lower horizontal members 141 and 142 are dovetails.

[0046] The upper horizontal member connector 130 and the lower horizontal member connector 140 are connected via horizontal member bolts 41 extending in the vertical direction. <Two - layer assembly 200> As shown in FIGS. 1 and 4, the two - layer assembly 200 has the same structure as the first - layer assembly 100. Therefore, for the components of the two - layer assembly 200 that are the same as those of the first - layer assembly 100, the same reference numerals are used, and for the corresponding components, reference numerals are assigned by adding "200" to the reference numerals "1**" of the components of the first - layer assembly 100, i.e., "2**", so that duplicate explanations may be omitted.

[0047] Hereinafter, the differences between the components of the two - layer assembly 200 and those of the first - layer assembly 100 will be mainly described. As shown in FIG. 4, the two - layer assembly 200 has a column connector 210, an assembly connector 260, and a horizontal member connector 250.

[0048] (Column connector 210) As shown in FIGS. 1 and 4, the column connector 210 includes a plurality of (16 in this embodiment) wooden columns 211 erected on the upper surfaces of the lower horizontal members 142, and a connecting member 220 that connects the columns 211 to each other.

[0049] The 16 columns 211 are composed of 12 side columns 212 and 4 corner columns 213, and are arranged at the positions of a checkerboard pattern in plan view. Four side columns 212 are provided on each side of the second layer. The four corner columns 213 are surrounded by the 12 side columns 212.

[0050] As shown in FIG. 13, the side columns 212 are arranged inside the side columns 112 of the first layer. The corner columns 213 are arranged inside the corner columns 113 of the first layer. As shown in FIGS. 1 and 4, the column feet 214 of the columns 211 are not provided with a structure corresponding to the base 121 in the first layer.

[0051] The connecting member 220 includes horizontal members provided between adjacent corner columns 213 and between adjacent side columns 212 and corner columns 213. As shown in FIGS. 3, 6, and 12, the lower portions of a plurality of column foot bolts 51 extending in the vertical direction are inserted into the horizontal member connecting body 150 of the first layer assembly 100. The upper portions of the column foot bolts 51 protrude upward from the upper surface of the lower horizontal member 142.

[0052] As shown in FIGS. 12 and 13, in this embodiment, four column foot bolts 51 are provided corresponding to the four lower insertion portions 215 of the columns 211. As shown in FIG. 12, the upper portions of the column foot bolts 51 are inserted into the lower insertion portions 215. The upper ends of the column foot bolts 51 are exposed inside the lower recessed portions 216. Washers 71 and nuts 72 are attached to the upper ends of the column foot bolts 51. Thereby, the column feet 214 of the columns 211 and the horizontal member connecting body 150 are connected via the column foot bolts 51.

[0053] (Horizontal member connecting body 250) As shown in FIG. 4, the horizontal member connecting body 250 includes an upper horizontal member connecting body 230 and a lower horizontal member connecting body 240 disposed above the upper horizontal member connecting body 230.

[0054] The upper horizontal member connecting body 230 is composed of a plurality of wooden upper horizontal members 231 and 232 connected together, and is arranged above the column connecting body 210. The upper horizontal member connecting body 230 forms a lattice shape as a whole.

[0055] Specifically, the upper horizontal member connecting body 230 has four upper horizontal members 231 extending parallel to each other, and four upper horizontal members 232 extending orthogonally to the upper horizontal members 231 and parallel to each other. The joints between the upper horizontal members 231 and 232 are complementary. The upper horizontal members 231 and 232 are assembled in a lattice shape such that the heights of the upper surfaces and the lower surfaces of the upper horizontal members 231 and 232 are the same respectively, and are supported by the upper surfaces of the knee timbers (not shown in the figure) located at the uppermost stage of the assembly connecting body 260 and the upper surfaces of the four-day columns 213.

[0056] The lower horizontal member connecting body 240 is composed of a plurality of wooden lower horizontal members 241 and 242 connected together, and is arranged above the upper horizontal member connecting body 230. The lower horizontal member connecting body 240 forms a lattice shape as a whole.

[0057] Specifically, the lower horizontal member connecting body 240 has three lower horizontal members 241 extending parallel to each other, and three lower horizontal members 242 extending orthogonally to the lower horizontal members 241 and parallel to each other. The lower horizontal members 242 are supported by the upper surfaces of the lower horizontal members 241.

[0058] Note that the central portions of the inner lower horizontal members 241 and 242 are divided to allow the core column 80 described later to pass through. Although not shown in the figure, the upper horizontal member connecting body 230 and the lower horizontal member connecting body 240 are connected via horizontal member bolts extending in the vertical direction.

[0059] <Three-layer assembly 300> As shown in FIGS. 1 and 5, the three-layer assembly 300 has the same structure as the first-layer assembly 100. Therefore, for the components of the three-layer assembly 300 that are the same as those of the first-layer assembly 100, the same reference numerals are assigned, and for the corresponding components, the reference numeral of the component of the first-layer assembly 100, "1**", is added with "300" to obtain the reference numeral "3**", so that duplicate explanations may be omitted.

[0060] Hereinafter, the differences between the components of the three-layer assembly 300 and those of the first-layer assembly 100 will be described. As shown in FIG. 5, the three-layer assembly 300 includes a column connector 310, an assembly connector 360, and a horizontal member connector 350.

[0061] (Column Connector 310) As shown in FIGS. 1 and 5, the column connector 310 includes a plurality of (12 in this embodiment) wooden columns 311 erected on the upper surface of the lower horizontal member 241, and a connecting member 320 that connects the columns 311 to each other.

[0062] The 12 columns 311 are composed of 8 side columns 312 and 4 corner columns 313. Three side columns 312 are provided on each side surface of the three layers. The 4 corner columns 313 are surrounded by the 8 side columns 312.

[0063] The side columns 312 are arranged inside the side columns 212 of the second layer. The corner columns 313 are arranged inside the corner columns 213 of the second layer. As shown in FIGS. 1 and 5, the leg portions 314 of the columns 311 are not provided with a structure corresponding to the base 121 in the first layer.

[0064] The connecting member 320 includes a horizontal member provided between adjacent side columns 312. As shown in FIG. 4, the lower portions of a plurality of column leg bolts 51 extending in the vertical direction are inserted into the horizontal member connector 250 of the second-layer assembly 200. The upper portions of the column leg bolts 51 protrude upward from the upper surfaces of the lower horizontal members 241 and 242.

[0065] The upper part of the column base bolt 51 is inserted into the lower insertion part (not shown) provided on the leg part 314 of the column 311. And in the same manner as in the second floor, the upper end part of the column base bolt 51 is exposed inside the lower seat excavation part (not shown in the drawing) provided on the leg part 314 of the column 311. Washers and nuts are attached to the upper end part of the column base bolt 51 (both not shown). Thereby, the leg part 314 of the column 311 and the lateral member connecting body 250 are connected via the column base bolt 51.

[0066] (Lateral member connecting body 350) As shown in FIG. 5, the lateral member connecting body 350 includes an upper lateral member connecting body 330 and a lower lateral member connecting body 340 disposed above the upper lateral member connecting body 330.

[0067] The upper lateral member connecting body 330 is configured by connecting a plurality of wooden upper lateral members 331 and 332, and is disposed above the column connecting body 310. Specifically, the upper lateral member connecting body 330 has two upper lateral members 331 extending in parallel with a space therebetween, and two upper lateral members 332 extending orthogonally to the upper lateral member 331 and in parallel with a space therebetween. The joints between the upper lateral members 331 and 332 are offset. The upper lateral members 331 and 332 are assembled in a grid shape so that the heights of the upper surfaces and the heights of the lower surfaces of the upper lateral members 331 and 332 are the same, and are supported on the upper surface of the knee brace (not shown in the drawing) located at the uppermost stage of the truss connecting body 360.

[0068] The lower lateral member connecting body 340 is configured by connecting a plurality of wooden lower lateral members 341 and 342, and is disposed above the upper lateral member connecting body 330. Specifically, the lower lateral member connecting body 340 has two lower lateral members 341 extending in parallel with a space therebetween, and two lower lateral members 342 extending orthogonally to the lower lateral member 341 and in parallel with a space therebetween. The lower lateral member 342 is supported on the upper surface of the lower lateral member 341. The lower lateral member connecting body 340 as a whole forms a grid shape.

[0069] Although illustration is omitted, the upper horizontal member connector 330 and the lower horizontal member connector 340 are connected via horizontal member bolts extending in the vertical direction. (Central column 80) As shown in FIGS. 1 and 4, a central column 80 for supporting a hōryō (not shown) disposed on top of the roof is provided at the center of the tower.

[0070] As shown in FIG. 8, the lower surface of the receiving member 143 is supported between the upper surfaces of the two lower horizontal members 141 inside the first layer. The lower end surface of the central column 80 is supported by the receiving member 143.

[0071] In such a tower, the side columns 212, 312 and the four-day columns 213, 313 are arranged more inwardly in the upper layers, and the lateral width of the side surface is reduced, that is, it is decreased step by step. Next, the construction method of the tower of the present embodiment will be described.

[0072] First, a plurality of column leg bolts 51 corresponding to each of the first layer columns 111 are arranged on the foundation 90 so as to protrude upward from the upper surface of the foundation 90 (the above is the column leg bolt arrangement step). Also, each of the columns 111 is connected via the connecting member 120, and a column connector 110 having a lower insertion portion 115 that opens at the lower end surface of each of the columns 111 and extends in the vertical direction is formed (the above is the column connector formation step).

[0073] Also, the column connector 110 is lowered so that the column leg bolts 51 are inserted into the lower insertion portion 115 (the above is the column leg bolt insertion step). At this time, it is preferable to use a heavy machine such as a crane.

[0074] Then, by fastening the column leg bolts 51 and the columns 111, the column connector 110 is connected to the foundation 90 (the above is the column leg bolt fastening step). Also, column head bolts 61, 62 are arranged on each of the columns 111 so as to protrude upward from the upper end surface of the columns 111 constituting the first layer (the above is the column head bolt arrangement step).

[0075] Further, a plurality of wooden upper horizontal members 131 and 132 are connected to form an upper horizontal member connecting body 130 having through portions 133 and 134 that penetrate the upper horizontal members 131 and 132 (the above is the upper horizontal member connecting body forming step). A plurality of lower horizontal members 141 and 142 are connected to form a lower horizontal member connecting body 140 disposed above the upper horizontal member connecting body 130 (the above is the lower horizontal member connecting body forming step). Then, the upper horizontal member connecting body 130 and the lower horizontal member connecting body 140 are connected via horizontal member bolts 41 extending in the vertical direction to form a horizontal member connecting body 150 (the above is the horizontal member connecting body forming step).

[0076] Also, the horizontal member connecting body 150 is lowered so that the column head bolts 61 and 62 are inserted into the through portions 133 and 134 (the above is the column head bolt insertion step). Then, by fastening the column head bolts 61 and 62 and the upper horizontal members 131 and 132, the horizontal member connecting body 150 is connected to the column connecting body 110 (the above is the column head bolt fastening step).

[0077] In this way, the first - layer assembly 100 is assembled on the foundation 90. Next, a plurality of column - leg bolts 51 corresponding to each of the second - layer columns 211 are arranged on the lower horizontal members 141 and 142 so as to protrude upward from the upper surface of the lower horizontal member 142 of the first layer (the above is the column - leg bolt arrangement step).

[0078] Also, each of the columns 211 is connected via a connecting member 220 to form a column connecting body 210 having a lower insertion portion 215 that opens at the lower end surface of each of the columns 211 and extends in the vertical direction (the above is the column connecting body forming step).

[0079] Also, the column connecting body 210 is lowered so that the column - leg bolts 51 are inserted into the lower insertion portion 215 (the above is the column - leg bolt insertion step). At this time, similar to the first layer, it is preferable to use a heavy machine such as a crane.

[0080] Then, by fastening the bolts 51 for column foot part and the column 211, the column connectors 110 and 210 are connected to the lower horizontal members 141 and 142 (the above is the bolt fastening process for column foot part). Also, bolt heads 61 and 62 for column head part are arranged on each of the columns 211 so as to protrude upward from the upper end surface of the columns 211 constituting the second layer (the above is the process of arranging bolt heads for column head part).

[0081] Also, a plurality of wooden upper horizontal members 231 and 232 are connected, and an upper horizontal member connector 230 having a through part (not shown) penetrating the upper horizontal members 231 and 232, and a plurality of lower horizontal members 241 and 242 are connected and a lower horizontal member connector 240 arranged above the upper horizontal member connector 230 are formed. Then, by connecting the upper horizontal member connector 230 and the lower horizontal member connector 240 via horizontal member bolts (not shown) extending in the vertical direction, a horizontal member connector 250 is formed (the above is the process of forming horizontal member connector).

[0082] Also, the horizontal member connector 250 is lowered so that the bolt heads for column head part (not shown) are inserted into the through part (not shown in the drawing) (the above is the process of inserting bolt heads for column head part). Then, by fastening the bolt heads 61 and 62 for column head part and the upper horizontal members 231 and 232, the horizontal member connector 250 is connected to the column connector 210 (the above is the bolt fastening process for column head part).

[0083] In this way, the two - layer assembly 200 is assembled on the lower horizontal member 142 of the first layer. Finally, in the same manner as the two - layer assembly 200, a three - layer assembly 300 is assembled on the lower horizontal member 242 of the second layer.

[0084] In this way, in each layer, the process of arranging bolts for column foot part, the process of forming column connector, the process of inserting bolts for column foot part, and the bolt fastening process for column foot part, the process of arranging bolt heads for column head part, the process of forming horizontal member connector, the process of inserting bolt heads for column head part, and the bolt fastening process for column head part are carried out.

[0085] Next, the operation of this embodiment will be described. The legs 114, 214, 314 of the plurality of columns 111, 211, 311 and the foundation 90 or the lower horizontal members 141, 142, 241, 242 are connected via bolts 51 for column legs, and the horizontal member connectors 150, 250, 350 and the heads 117 of the plurality of columns 111, 211, 311 are connected via bolts 61, 62 for column heads, enabling easy construction of a tower having a plurality of layers.

[0086] In a tower constructed by such a construction method, in the third layer, the gravity and the buoyancy force are sequentially transmitted to the lower horizontal member connector 340, the upper horizontal member connector 330, the column 311, and the lower horizontal member connector 240 of the second layer. Also, in the second layer, the gravity and the buoyancy force are sequentially transmitted to the lower horizontal member connector 240, the upper horizontal member connector 230, the column 211, and the lower horizontal member connector 140 of the first layer. Further, in the first layer, the gravity and the buoyancy force are sequentially transmitted to the lower horizontal member connector 140, the upper horizontal member connector 130, the column 111, and the foundation 90. That is, by arranging the bolts 61, 62 for column heads and the bolts 51 for column legs at the heads 117 and legs 114, 214, 314 of the columns 111, 211, 311 respectively, not only the compressive force in the vertical direction but also the tensile force in the vertical direction is borne by the columns 111, 211, 311.

[0087] Also, by arranging bolts 41 for horizontal members between the upper horizontal member connector 130 and the lower horizontal member connector 140 arranged above the upper horizontal member connector 130, the axial force of the columns 211, 311 in the axial direction of the columns 211, 311 is transmitted to the columns 111, 211 of the corresponding layer from the columns 211, 311 of the layer directly above.

[0088] Furthermore, the bolts 51 for column legs and the bolts 61, 62 for column heads are inserted into the legs 114, 214, 314 and heads 117 of the columns 111, 211, 311 respectively. For this reason, these bolts 51, 61, 62 do not appear on the design surface of the tower. Therefore, it is possible to suppress the design property of the tower from being impaired by the bolts 51, 61, 62.

[0089] Next, the effects of the present embodiment will be described. (1) The construction method of the wooden three-story pagoda includes a bolt arrangement process for the column base part, a column connection body formation process, a bolt insertion process for the column base part, a bolt fastening process for the column base part, a bolt arrangement process for the column head part, a horizontal member connection body formation process, and a bolt fastening process for the column head part. And in each of the layers, a bolt arrangement process for the column base part, a column connection body formation process, a bolt insertion process for the column base part, a bolt fastening process for the column base part, a bolt arrangement process for the column head part, a horizontal member connection body formation process, a bolt insertion process for the column head part, and a bolt fastening process for the column head part are performed.

[0090] According to such a configuration, since the above-described effects are achieved, it is possible to effectively suppress the collapse of the wooden three-story pagoda due to strong winds such as typhoons while suppressing the impairment of the design property of the wooden three-story pagoda.

[0091] (2) In the bolt fastening process for the column base part, the washer 71 and the nut 72 are attached to the upper end of the bolt 51 for the column base part exposed inside the lower recessed part 116, thereby fastening the bolt 51 for the column base part and the column 111.

[0092] According to such a method, since the washer 71 and the nut 72 can be attached to the upper end of the bolt 51 for the column base part through the lower recessed part 116, the bolt 51 for the column base part and the column 111 can be easily fastened. Further, since only the upper end of the bolt 51 for the column base part is exposed inside the lower recessed part 116, it is possible to further suppress the impairment of the design property of the wooden building by the bolt 51 for the column base part.

[0093] (3) Since the lower recessed part 116 is filled with wood, the upper end of the bolt 51 for the column base part is not exposed through the lower recessed part 116. Therefore, it is possible to prevent the design property of the wooden building from being impaired by the bolt 51 for the column base part.

[0094] <Modification Example> This embodiment can be implemented with the following modifications. This embodiment and the following modification examples can be implemented in combination with each other within a technically non-conflicting range.

[0095] ·The assembly body 161 is not limited to the three-handed assembly, the so-called three-handed Tokyo, and can also be made into other assemblies such as two-handed assemblies, or the so-called cloud Tokyo. ·The process of embedding wooden beams in the lower seat excavation part 116 and the upper seat excavation part 119 can also be omitted.

[0096] ·The present invention is not limited to the construction method of a triple pagoda, and the present invention can also be embodied as the construction method of a five-story pagoda or a seven-story pagoda. ·The present invention is not limited to the construction method of a multi-story pagoda, and the present invention can also be embodied as the construction method of other wooden buildings such as temple gates, or the construction method of a single-story wooden building. In this case, the process of arranging bolts for the column head part, the process of forming the horizontal member connecting body, the process of inserting bolts for the column head part, and the process of fastening bolts for the column head part can also be omitted.

[0097] ·In the above embodiment, after forming the horizontal member connecting body 150, the horizontal member connecting body 150 is lowered so that the bolts 61 and 62 for the column head part are inserted into the through parts 133 and 134. Instead of this, before forming the horizontal member connecting body 150, only the upper horizontal member connecting body 130 may be lowered so that the bolts 61 and 62 for the column head part are inserted into the through parts 133 and 134. In this case, after the process of inserting bolts for the column head part, the horizontal member connecting body 150 may be formed by connecting the upper horizontal member connecting body 130 and the lower horizontal member connecting body 140 via bolts 41 for horizontal members extending in the vertical direction. The same applies to the second and third floors.

[0098] ·The number of side columns 312 on the third floor can also be set to 12, the same as that on the second floor. ·The number of bolts 51 for the column base part provided on one column 111, 211, 311 and the number of bolts 61 and 62 for the column head part may be changed.

[0099] ·The central column 80 may be extended to the first floor. ·The assembly connecting body 160 can also be omitted. In this case, as shown in FIG. 14, the side column 112 may be extended to the height of the lower surface of the upper horizontal member connecting body 130.

Explanation of reference numerals

[0100] 41… Bolt for horizontal frame member 51… Bolt for column base part 61, 62… Bolts for column head part 71… Washer 72… Nut 80… Core column 90… Foundation 91… Upper surface 100… First - layer assembly 110, 210, 310… Column connectors 111, 211, 311… Columns 112, 212, 312… Side columns 113, 213, 313… Four - side columns 114, 214, 314… Base parts 115, 215… Lower insertion parts 116, 216… Lower seating recess parts 117… Head part 118… Upper insertion parts 119… Upper seating recess parts 120, 220… Connecting members 121… Base 130, 230… Upper horizontal frame connectors 131, 132, 231, 232… Upper horizontal frame members 133, 134… Through - holes 140, 240… Lower horizontal frame connectors 141, 142, 241, 242… Lower horizontal frame members 143… Receiving members 150… Horizontal frame connector 160, 260… Structure connectors 161… Structure body 162… Big dou - block 163… Brace 164… Dou - block 165… Base wheel 170… Column 200… Second - layer assembly 300… Third - layer assembly

Claims

1. A method for constructing a wooden building comprising a plurality of wooden pillars, a foundation or a wooden lower cross member supporting the lower end surface of each of the pillars, and a connecting member connecting the pillars, the pillars, the foundation or the lower cross member, and the connecting member forming a story, a column base bolt arrangement process for arranging a plurality of column base bolts corresponding to each of the columns on the foundation or the lower cross member so as to protrude upward from an upper surface of the foundation or the lower cross member; a column connector forming process for forming a column connector in which each of the columns is connected via the connecting member, the column connector having an insertion portion that opens on the lower end surface of each of the columns and extends in the vertical direction; a column base bolt insertion process of lowering the column connector and inserting the column base bolt into the insertion portion; and a column base bolt fastening process for fastening the column base bolt and the column to connect the column connector to the foundation or the lower cross member. Construction method of wooden buildings.

2. In the column base bolt fastening process, a washer and a nut are attached to the upper end of the column base bolt exposed inside a seat groove portion that opens on the outer surface of the column and communicates with the insertion portion, thereby fastening the column base bolt to the column. A method for constructing a wooden building according to claim 1.

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