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 method for constructing a wooden building. [Background technology]

[0002] Multi-story pagodas, such as three-story and five-story pagodas, are among the traditional wooden buildings of ancient Japan. While it is said that multi-story pagodas have never collapsed due to an earthquake, there are cases where they have collapsed due to strong wind pressure, such as from a typhoon. When subjected to strong wind pressure, the columns of each story that make up a multi-story pagoda are lifted away from the foundation stones and the cross members that support the base of the columns. When this happens, if the columns on the first story are lifted up above a certain height, the multi-story pagoda will topple over, resulting in total collapse.

[0003] Non-Patent Document 1 discloses a five-story pagoda in which steel tie rods are additionally installed to connect the beams on the top floor to the foundation in order to prevent the columns on each floor from lifting up from the foundation and cross members. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] Taisei Corporation website, [Searched on July 17, 2023], Internet<URL:https: / / www.taisei-techsolu.jp / solution / temple / hounenji_gojyunotou1.html > Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the case of the technology described in Non-Patent Document 1, the tie rods made of steel bars appear inside each layer, which causes a problem of impairing the design. It should be noted that these problems are not limited to multi-story towers, but occur in a similar manner in any structure that prevents columns from lifting up from their foundations or from their cross members. [Means for solving the problem]

[0006] Various aspects of the construction method for wooden buildings to solve the above problems will be described below. [Aspect 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. Wooden building structure.

[0007] According to this construction method, in the column base bolt arrangement step, a plurality of column base bolts corresponding to each column are arranged on the foundation or lower cross member so as to protrude upward from the upper surface of the foundation or lower cross member. In the column connector formation step, each column is connected via a connecting member to form a column connector having an insertion portion that opens on the lower end surface of each column and extends in the vertical direction. In the column base bolt insertion step, the column connector is lowered to insert the column base bolt into the insertion portion. Then, in the column base bolt fastening step, the column base bolt is fastened to the column to connect the column connector to the foundation or lower cross member. Therefore, it is easy to build a wooden building in which the legs of multiple columns and the foundation or lower cross member are connected via the column base bolts extending in the vertical direction.

[0008] In addition, in wooden buildings constructed using this method, the uplift force acting on the base of the column is transmitted to the lower cross member or foundation via the column base bolt. In other words, by locating the column base bolt at the base of the column, the column is able to bear not only the compressive force in the vertical direction, but also the tensile force in the vertical direction.

[0009] Furthermore, the column base bolt is inserted into the column base, so that the column base bolt is not visible on the design surface, preventing the column base bolt from impairing the design of the wooden building.

[0010] [Aspect 2] The wooden building comprises a plurality of stories, a column capital bolt arranging step of arranging a column capital bolt on each of the columns so as to protrude upward from the upper end surface of the columns constituting the corresponding layer; An upper cross member connector forming process for forming an upper cross member connector that is configured by connecting a plurality of wooden upper cross members and has a through-hole that penetrates the upper cross members; A lower cross member connector forming process in which a plurality of the lower cross members are connected to form a lower cross member connector that is disposed above the upper cross member connector; a column head bolt insertion process of lowering the upper cross member connector to insert the column head bolt into the through-hole; a cross member connector forming process for forming a cross member connector by connecting the upper cross member connector and the lower cross member connector via a cross member bolt extending in the vertical direction before or after the column head bolt insertion process; and a column head bolt fastening step for fastening the column head bolt and the upper cross member to connect the cross member connector to the column connector, In each of the layers, the column base bolt arrangement process, the column connector formation process, the column base bolt insertion process, the column base bolt fastening process, the column head bolt arrangement process, the upper cross member connector formation process, the lower cross member connector formation process, the column head bolt insertion process, the cross member connector formation process, and the column head bolt fastening process are performed. 2. A method for constructing a wooden building according to claim 1.

[0011] According to this construction method, in the column head bolt arrangement step, a column head bolt is arranged on each of the columns so as to protrude upward from the upper end surface of the column constituting the corresponding layer. In the upper cross member connector formation step, a plurality of wooden upper cross members are connected to form an upper cross member connector having a through-hole that penetrates the upper cross member. In the lower cross member connector formation step, a plurality of lower cross members are connected and a lower cross member connector arranged above the upper cross member connector is formed. In the column head bolt insertion step, the cross member connector is lowered and the column head bolt is inserted through the through-hole. In the cross member connector formation step, the upper cross member connector and the lower cross member connector are connected via a cross member bolt extending in the vertical direction to form a cross member connector. In the column head bolt fastening step, the column head bolt and the upper cross member are fastened to connect the cross member connector to the column connector. In addition, in each story of the wooden building, a step of arranging bolts for the column base, a step of forming a column connector, a step of inserting bolts for the column base, a step of fastening bolts for the column base, a step of arranging bolts for the column head, a step of forming an upper cross member connector, a step of forming a lower cross member connector, a step of inserting bolts for the column head, a step of forming a cross member connector, and a step of fastening bolts for the column head are performed. This makes it possible to easily erect a wooden building having multiple stories in which the bases of multiple columns and the foundations or lower cross members are connected via the column base bolts extending in the vertical direction, and the cross member connectors and the heads of multiple columns are connected via the column head bolts extending in the vertical direction.

[0012] In wooden buildings constructed using this method, on the second and higher floors, gravity and uplift forces are transmitted in sequence from the lower cross member connectors, upper cross member connectors, columns, and lower cross member connectors. On the first floor, gravity and uplift forces are transmitted in sequence from the lower cross member connectors, upper cross member connectors, columns, and foundation. In other words, by arranging column head bolts and column base bolts at the head and foot of the column, respectively, the column is able to bear not only vertical compressive forces but also vertical tensile forces.

[0013] In addition, by placing a cross member bolt between the upper cross member connector and the lower cross member connector arranged above the upper cross member connector, the axial force of the column can be transmitted from the column in the floor directly above to the column in the floor in question.

[0014] Furthermore, the column base bolts and column head bolts are inserted into the base and head of the column, respectively. Therefore, these bolts are not visible on the design surface. This prevents the bolts from impairing the design of the wooden building.

[0015] [Aspect 3] The wooden building is a multi-tiered tower. A method for constructing a wooden building according to aspect 2.

[0016] This construction method effectively prevents the collapse of a multi-story tower due to strong winds such as typhoons, while preventing the design of the tower from being damaged. [Aspect 4] 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 any one of claims 1 to 3.

[0017] According to this construction method, a washer and a nut can be attached to the upper end of the column base bolt through the seat groove, so that the column base bolt can be easily fastened to the column. Also, because only the upper end of the column base bolt is exposed inside the seat groove, it is possible to further prevent the column base bolt from damaging the design of the wooden building. Effect of the Invention

[0018] According to the present invention, it is possible to easily erect a wooden building that can prevent columns from lifting up from the foundation or lower cross members while minimizing loss of design. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view showing the overall framework structure of a three-story tower in one embodiment. [Diagram 2] FIG. 2(a) is a perspective view of a foundation in which column base bolts are arranged, and FIG. 2(b) is a plan view showing four column base bolts corresponding to one column. [Diagram 3] FIG. 3 is a perspective view showing the first layer assembly. [Figure 4] FIG. 4 is a perspective view showing a two-layer assembly. [Diagram 5] FIG. 5 is a perspective view showing a three-layer assembly. [Figure 6] FIG. 6 is an exploded perspective view of the column connector, the braid connector, and the cross member connector that constitute the first floor assembly. [Figure 7] FIG. 7 is a partial plan view of the post connector of FIG. [Figure 8] FIG. 8 is a partial plan view of the cross member connector of FIG. [Figure 9] FIG. 9 is a partial side view of the braid connector of FIG. [Figure 10] FIG. 10 is a cross-sectional view showing the connection structure between the base of the column on the first floor and the foundation. [Figure 11] FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. 13, showing the connection structure between the head of the column of the first story and the upper cross member. [Figure 12] FIG. 12 is a cross-sectional view taken along line 12-12 in FIG. 13, showing the connection structure between the legs of the columns on the second floor and the lower cross member. [Figure 13] FIG. 13 corresponds to FIG. 8 and is a partial plan view showing a schematic arrangement of the bolts. [Figure 14] FIG. 14 is a view corresponding to FIG. 11 and is a cross-sectional view showing a connection structure between the head portion of a column of the first story and an upper cross member in a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, with reference to Figs. 1 to 13, an embodiment in which a construction method for a wooden building is embodied as a construction method for a three-story wooden pagoda (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 (first layer, second layer, and third layer). Each layer has four sides.

[0021] In the following description, the sides approaching and away from the center of the tower may be referred to as the inside and outside, respectively. Next, the assemblies 100, 200, 300 of each layer will be described in detail.

[0022] <First layer assembly 100> As shown in FIGS. 3 and 6, the first floor assembly 100 includes a column connector 110, a braid connector 160, and a cross member connector 150.

[0023] (Column connection body 110) As shown in Figures 3, 6, and 7, the pillar connector 110 comprises multiple wooden pillars 111 (16 in this embodiment) erected on the upper surface of the foundation 90, and connecting members 120 that connect the pillars 111 together.

[0024] The 16 pillars 111 consist of 12 side pillars 112 and four Shiten pillars 113, and are arranged in a grid pattern in a plan view. Four side pillars 112 are provided on each side of the first floor. The four Shiten pillars 113 are surrounded by the 12 side pillars 112.

[0025] Wooden bases 121 that connect the pillars 111 to each other are provided on the legs 114 of the pillars 111. The bases 121 are provided between adjacent side pillars 112 and between adjacent four heavenly pillars 113.

[0026] The connecting members 120 include cross members provided between adjacent side columns 112, between adjacent four pillars 113, and between adjacent side columns 112 and four pillars 113. The connecting members 120 are inserted into holes penetrating the pillars 111, or into holes formed on the outer surfaces of the pillars 111.

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

[0028] A lower seat trench 116 is formed in the leg 114 of the pillar 111. The lower seat trench 116 opens to the outer surface of the pillar 111 and communicates with the lower insertion part 115. The lower seat trench 116 has an internal space in a substantially rectangular parallelepiped shape and communicates with the upper end of the lower insertion part 115.

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

[0030] 11 , the pillar 111 is formed with an upper seat moat 119 that opens to the outer surface of the pillar 111 and communicates with the upper insertion part 118. The upper seat moat 119 has a substantially rectangular parallelepiped internal space and communicates with the lower end of the upper insertion part 118.

[0031] The lower parts of the column capital bolts 61, 62 extending in the vertical direction are inserted into the upper insertion parts 118. The upper parts of the column capital bolts 61, 62 protrude upward from the upper end surface of the column 111. The lower ends of the column capital bolts 61, 62 are exposed inside the upper trench washer part 119. A washer 71 and a nut 72 are attached to the lower ends of the column capital bolts 61, 62.

[0032] Although not shown in the drawings, the upper seat trench 119 is subjected to a filler treatment. (Basic 90) As shown in FIGS. 2( a ) and 10 , the foundation 90 is a concrete structure and has a flat upper surface 91 .

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

[0034] As shown in FIG. 2(b), in this embodiment, four column base bolts 51 are provided corresponding to four lower insertion portions 115 provided on the leg portion 114 of the column 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 trench washer part 116. A washer 71 and a nut 72 are attached to the upper end part of the column base bolt 51. In this way, the leg part 114 of the column 111 and the foundation 90 are connected via the column base bolt 51.

[0035] Although not shown in the drawings, the lower seat trench 116 is subjected to a filler treatment. (Place connection body 160) As shown in FIGS. 6, 9, and 11, above the side posts 112 of the posts 111, a bracket connector 160 is disposed.

[0036] The bracket connecting body 160 includes a bracket main body 161 and a base wheel 165 that is disposed between the upper end faces of the side posts 112 and the bracket main body 161 and has a square frame shape as a whole. The assembly body 161 comprises a daito 162 and a daito 164 , and a bracket 163 arranged on the upper surface of the daito 162 or the daito 164 .

[0037] The braid main body 161 of this embodiment is a three-step outgrowth braid, so-called three-step Tokyo ("To" is the character for "to" with the wood radical and "tou", and "kyo" is the character for "kyo" with the wood radical). The four heavenly pillars 113 are located inside the bracket connector 160 and are connected to the bracket connector 160 .

[0038] (crossbeam connector 150) As shown in Figures 3, 6, 8, and 11 to 13, the cross member connector 150 comprises an upper cross member connector 130 and a lower cross member connector 140 arranged above the upper cross member connector 130.

[0039] The upper cross-member connector 130 is configured by connecting a plurality of wooden upper cross-members 131, 132, and is disposed above the column connector 110. The upper cross-member connector 130 has a lattice shape as a whole.

[0040] In detail, the upper cross member connector 130 has four upper cross members 131 extending parallel to each other, and four upper cross members 132 extending perpendicular to the upper cross members 131 and parallel to each other. The joints between the upper cross members 131, 132 are notched. The upper cross members 131, 132 are assembled in a lattice pattern so that the heights of the top faces of the upper cross members 131, 132 and the heights of the bottom faces of the upper cross members 131, 132 are the same, and are supported by the top face of an elbow 163 located at the top of the braid connector 160 and the top face of the four heavenly pillars 113.

[0041] As shown in FIGS. 11 to 13, the upper end faces of the four pillars 113 support the lower faces of the two inner upper horizontal members 131 at portions that intersect with the two inner upper horizontal members 132 . As shown in FIGS. 11 and 13, the lower surface of the upper cross member 131 is supported by a bracket connector 160 disposed on the upper end surface of the side column 112 .

[0042] As shown in FIG. 11, the upper horizontal members 131, 132 are provided with through-holes 133, 134 which extend in the vertical direction and penetrate the upper horizontal members 131, 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 a through-hole 133 that penetrates the upper cross-member connector 130. A washer 71 and a nut 72 are attached to the upper end of the column head bolt 61 protruding upward from the top surface of the upper cross-member connector 130.

[0043] The upper part of the column head bolt 62 protruding upward from the upper end surface of the four top pillars 113 is inserted into a through-hole 134 penetrating the upper cross members 131, 132. A washer 71 and a nut 72 are attached to the upper end of the column head bolt 62 protruding upward from the top surface of the upper cross member 132.

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

[0045] In detail, the lower cross member connector 140 has four lower cross members 141 extending parallel to each other, and four lower cross members 142 extending perpendicular to the lower cross member 141 and parallel to each other. The lower cross member 142 is supported on the upper surface of the lower cross member 141. The joint between the lower cross members 141, 142 is a cross jaw.

[0046] The upper cross member connector 130 and the lower cross member connector 140 are connected via a cross member bolt 41 extending in the vertical direction. <Two layer assembly 200> 1 and 4, the two-layer assembly 200 has a similar structure to the first layer assembly 100. For this reason, the same components of the two-layer assembly 200 as those of the first layer assembly 100 are given the same reference numerals, and the corresponding components are given the reference numeral "2**" which is the reference numeral "1**" of the first layer assembly 100 plus "200", thereby omitting redundant explanations.

[0047] The following description will focus on the differences between the respective components of the second layer assembly 200 and the respective components of the first layer assembly 100. As shown in FIG. 4, the two-story assembly 200 has a column connector 210, a braid connector 260, and a cross member connector 250.

[0048] (Column connection body 210) As shown in Figures 1 and 4, the pillar connector 210 comprises multiple (16 in this embodiment) wooden pillars 211 erected on the upper surface of the lower cross member 142, and connecting members 220 that connect the pillars 211 together.

[0049] The 16 pillars 211 consist of 12 side pillars 212 and four Shiten pillars 213, and are arranged in a grid pattern in a plan view. Four side pillars 212 are provided on each side of the second floor. The four Shiten pillars 213 are surrounded by the 12 side pillars 212.

[0050] 13, the side pillar 212 is disposed on the inside of the side pillar 112 of the first floor. The four heavenly pillars 213 are disposed on the inside of the four heavenly pillars 113 of the first floor. As shown in Figs. 1 and 4, the leg 214 of the pillar 211 is not provided with a structure equivalent to the base 121 in the first floor.

[0051] The connecting members 220 include cross members provided between adjacent four pillars 213 and between adjacent side pillars 212 and four pillars 213. 3, 6, and 12, the lower portions of a plurality of column base bolts 51 extending in the vertical direction are inserted into the cross member connector 150 of the first floor assembly 100. The upper portions of the column base bolts 51 protrude upward from the upper surface of the lower cross member 142.

[0052] As shown in FIGS. 12 and 13, in this embodiment, four column base bolts 51 are provided corresponding to the four lower insertion portions 215 of the column 211. 12, the upper part of the column base bolt 51 is inserted into the lower insertion portion 215. The upper end of the column base bolt 51 is exposed inside the lower groove washer portion 216. A washer 71 and a nut 72 are attached to the upper end of the column base bolt 51. In this way, the leg 214 of the column 211 and the cross member connector 150 are connected via the column base bolt 51.

[0053] (crossbeam connector 250) As shown in FIG. 4 , the cross member connector 250 includes an upper cross member connector 230 and a lower cross member connector 240 arranged above the upper cross member connector 230 .

[0054] The upper cross-member connector 230 is configured by connecting a plurality of wooden upper cross-members 231, 232, and is disposed above the column connector 210. The upper cross-member connector 230 has a lattice shape as a whole.

[0055] In detail, the upper horizontal member connector 230 has four upper horizontal members 231 extending parallel to each other, and four upper horizontal members 232 extending perpendicular to the upper horizontal members 231 and parallel to each other. The joints between the upper horizontal members 231, 232 are notched. The upper horizontal members 231, 232 are assembled in a lattice pattern so that the heights of the upper surfaces of the upper horizontal members 231, 232 and the heights of the lower surfaces of the upper horizontal members 231, 232 are the same, and are supported by the upper surface of the bracket (not shown) located at the top of the braid connector 260 and the upper surface of the four heavenly pillars 213.

[0056] The lower cross-member connector 240 is configured by connecting a plurality of wooden lower cross-members 241, 242, and is disposed above the upper cross-member connector 230. The lower cross-member connector 240 has a lattice shape as a whole.

[0057] In detail, the lower cross member connector 240 has three lower cross members 241 extending parallel to each other, and three lower cross members 242 extending perpendicular to the lower cross member 241 and parallel to each other. The lower cross members 242 are supported on the upper surface of the lower cross member 241.

[0058] The central portions of the inner lower horizontal members 241, 242 are separated to allow for the central pillar 80, which will be described later. Although not shown in the figure, the upper cross member connector 230 and the lower cross member connector 240 are connected via a cross member bolt extending in the vertical direction.

[0059] <Three layer assembly 300> 1 and 5, the three-layer assembly 300 has a similar structure to the first layer assembly 100. For this reason, the same components of the three-layer assembly 300 as those of the first layer assembly 100 are given the same reference numerals, and the corresponding components are given the reference numeral "3**" which is the reference numeral "1**" of the first layer assembly 100 plus "300," thereby omitting redundant explanations.

[0060] The differences between the respective components of the three-layer assembly 300 and the respective components of the first layer assembly 100 will be described below. As shown in FIG. 5, the three-layer assembly 300 includes a column connector 310 , a braid connector 360 , and a cross member connector 350 .

[0061] (Column connection body 310) As shown in Figures 1 and 5, the pillar connector 310 comprises multiple (12 in this embodiment) wooden pillars 311 erected on the upper surface of the lower cross member 241, and connecting members 320 that connect the pillars 311 together.

[0062] The twelve pillars 311 consist of eight side pillars 312 and four Shiten pillars 313. Three side pillars 312 are provided on each side of the three floors. The four Shiten pillars 313 are surrounded by the eight side pillars 312.

[0063] The side pillar 312 is disposed on the inside of the second-story side pillar 212. The four heavenly pillars 313 are disposed on the inside of the four heavenly pillars 213 in the second story. As shown in Figs. 1 and 5, leg 314 of pillar 311 is not provided with a structure equivalent to base 121 in the first floor.

[0064] The connecting member 320 includes a cross member provided between adjacent side posts 312 . 4, the lower portions of a plurality of column base bolts 51 extending in the vertical direction are inserted into the horizontal member connector 250 of the two-story assembly 200. The upper portions of the column base bolts 51 protrude upward from the upper surfaces of the lower horizontal members 241, 242.

[0065] The upper part of the column base bolt 51 is inserted into a lower insertion part (not shown) provided in the leg 314 of the column 311. Then, similarly to the second layer, the upper end part of the column base bolt 51 is exposed inside a lower trench seat part (not shown) provided in the leg 314 of the column 311. A washer and a nut are attached to the upper end part of the column base bolt 51 (both not shown). In this way, the leg 314 of the column 311 and the cross member connector 250 are connected via the column base bolt 51.

[0066] (Beam connector 350) As shown in FIG. 5, the cross member connector 350 includes an upper cross member connector 330 and a lower cross member connector 340 arranged above the upper cross member connector 330.

[0067] The upper cross member connector 330 is formed by connecting multiple wooden upper cross members 331, 332, and is positioned above the column connector 310. In detail, the upper horizontal member connector 330 has two upper horizontal members 331 extending parallel to each other with a gap between them, and two upper horizontal members 332 extending perpendicular to the upper horizontal members 331 and extending parallel to each other with a gap between them. The joints between the upper horizontal members 331, 332 are mutually interlocking. The upper horizontal members 331, 332 are assembled in a grid pattern so that the heights of the top faces of the upper horizontal members 331, 332 and the heights of the bottom faces of the upper horizontal members 331, 332 are the same, and are supported by the top face of an elbow (not shown) located at the topmost stage of the assembly connector 360.

[0068] The lower cross member connector 340 is formed by connecting multiple wooden lower cross members 341, 342, and is positioned above the upper cross member connector 330. In detail, the lower cross-member connector 340 has two lower cross-members 341 extending parallel to each other with a gap between them, and two lower cross-members 342 extending perpendicular to the lower cross-members 341 and also extending parallel to each other with a gap between them. The lower cross-members 342 are supported on the upper surface of the lower cross-members 341. The lower cross-member connector 340 has a lattice shape overall.

[0069] Although not shown in the figure, the upper cross member connector 330 and the lower cross member connector 340 are connected via a cross member bolt extending in the vertical direction. (Shinbashira 80) As shown in Figs. 1 and 4, a central pillar 80 is provided in the center of the tower to support a pagoda (not shown) located on the top of the roof.

[0070] 8, the lower surface of a receiving member 143 is supported between the upper surfaces of two lower horizontal members 141 on the inside of the first story. The lower end surface of the central pillar 80 is supported by the receiving member 143.

[0071] In such a tower, the side pillars 212, 312 and the four heavenly pillars 213, 313 are positioned further inward in the upper stories, making the width of the side walls smaller, that is, tapering. Next, the construction method of the tower of this embodiment will be described.

[0072] First, a plurality of column base bolts 51 corresponding to each of the columns 111 on the first story are placed on the foundation 90 so as to protrude upward from the upper surface of the foundation 90 (this is the column base bolt placing step). In addition, each of the pillars 111 is connected via connecting members 120 to form a pillar connector 110 having a lower insertion portion 115 that opens into the lower end surface of each of the pillars 111 and extends in the vertical direction (this completes the pillar connector forming process).

[0073] Furthermore, the column connector 110 is lowered to insert the column base bolt 51 into the lower insertion portion 115 (the above is the column base bolt insertion process). At this time, it is preferable to use heavy machinery such as a crane.

[0074] Then, the column connector 110 is connected to the foundation 90 by fastening the column base bolt 51 to the column 111 (this is the column base bolt fastening step). Furthermore, column capital bolts 61, 62 are disposed on each of the columns 111 constituting the first story so as to protrude upward from the upper end surfaces of the columns 111 (this is the column capital bolt disposing step).

[0075] Furthermore, a plurality of wooden upper cross members 131, 132 are connected to form an upper cross member connector 130 having through-holes 133, 134 penetrating the upper cross members 131, 132 (upper cross member connector forming process). A plurality of lower cross members 141, 142 are connected to form a lower cross member connector 140 arranged above the upper cross member connector 130 (lower cross member connector forming process). Then, the upper cross member connector 130 and the lower cross member connector 140 are connected via cross member bolts 41 extending in the vertical direction to form a cross member connector 150 (cross member connector forming process).

[0076] Furthermore, the cross member connector 150 is lowered so that the column head bolts 61, 62 are inserted into the through-holes 133, 134 (this is the column head bolt insertion step). Then, the column head bolts 61, 62 are fastened to the upper horizontal members 131, 132, whereby the horizontal member connector 150 is connected to the column connector 110 (this is the column head bolt fastening step).

[0077] In this manner, the first floor assembly 100 is assembled on top of the foundation 90. Next, a number of column base bolts 51 corresponding to each of the columns 211 on the second floor are placed on the lower cross members 141, 142 so as to protrude upward from the top surface of the lower cross member 142 on the first floor (this is the column base bolt placement process).

[0078] In addition, each of the pillars 211 is connected via connecting members 220 to form a pillar connector 210 having a lower insertion portion 215 that opens at the lower end surface of each of the pillars 211 and extends in the vertical direction (this is the pillar connector forming process).

[0079] In addition, the column connector 210 is lowered to insert the column base bolt 51 into the lower insertion portion 215 (the above is the column base bolt insertion process). At this time, it is preferable to use heavy machinery such as a crane, as in the first floor.

[0080] Then, the column connectors 110, 210 are connected to the lower cross members 141, 142 by fastening the column base bolt 51 to the column 211 (this is the column base bolt fastening step). Furthermore, column capital bolts 61, 62 are disposed on each of the columns 211 so as to protrude upward from the upper end faces of the columns 211 constituting the second floor (the above is the column capital bolt disposing step).

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

[0082] Furthermore, the cross member connector 250 is lowered so that the column head bolt (not shown) is inserted into the through-hole (not shown) (this is the column head bolt insertion step). Then, the column head bolts 61, 62 are fastened to the upper horizontal members 231, 232, whereby the horizontal member connector 250 is connected to the column connector 210 (this is the column head bolt fastening step).

[0083] In this manner, the two-story assembly 200 is assembled on top of the lower cross member 142 of the first story. Finally, the three-tier assembly 300 is assembled on top of the lower cross members 242 of the two tier in a manner similar to that of the two-tier assembly 200.

[0084] In this way, at each floor, the following processes are carried out: a process of placing a bolt for the column base, a process of forming a column connector, a process of inserting a bolt for the column base, and a process of tightening a bolt for the column base, a process of placing a bolt for the column head, a process of forming a cross member connector, a process of inserting a bolt for the column head, and a process of tightening a bolt for the column head.

[0085] Next, the operation of this embodiment will be described. A tower with multiple stories can be easily built in which the legs 114, 214, 314 of multiple columns 111, 211, 311 are connected to the foundation 90 or lower cross members 141, 142, 241, 242 via column base bolts 51, and the cross member connectors 150, 250, 350 are connected to the heads 117 of multiple columns 111, 211, 311 via column head bolts 61, 62.

[0086] In a tower constructed by such a construction method, in the third story, gravity and uplift forces are transmitted in order to the lower cross member connectors 340, the upper cross member connectors 330, the columns 311, and the lower cross member connectors 240 of the second story. In the second story, gravity and uplift forces are transmitted in order to the lower cross member connectors 240, the upper cross member connectors 230, the columns 211, and the lower cross member connectors 140 of the first story. In the first story, gravity and uplift forces are transmitted in order to the lower cross member connectors 140, the upper cross member connectors 130, the columns 111, and the foundation 90. In other words, by arranging the column head bolts 61, 62 and the column base bolts 51 at the heads 117 and legs 114, 214, 314 of the columns 111, 211, 311, respectively, the columns 111, 211, 311 are able to bear not only vertical compressive forces but also vertical tensile forces.

[0087] In addition, by placing a cross member bolt 41 between the upper cross member connector 130 and the lower cross member connector 140 arranged above the upper cross member connector 130, the axial force of columns 211, 311 is transmitted from the columns 211, 311 in the floor directly above to the columns 111, 211 in question.

[0088] Furthermore, the column base bolts 51 and the column head bolts 61, 62 are inserted into the legs 114, 214, 314 and heads 117 of the columns 111, 211, 311, respectively. Therefore, these bolts 51, 61, 62 do not appear on the design surface of the tower. Therefore, it is possible to prevent the bolts 51, 61, 62 from impairing the design of the tower.

[0089] Next, the effects of this embodiment will be described. (1) The construction method for a three-story wooden pagoda includes a process of arranging bolts for the column base, a process of forming a column connector, a process of inserting bolts for the column base, a process of fastening bolts for the column base, a process of arranging bolts for the column head, a process of forming a cross member connector, and a process of fastening bolts for the column head.Then, in each story, the process of arranging bolts for the column base, the process of forming a column connector, the process of inserting bolts for the column base, the process of fastening bolts for the column head, the process of forming a cross member connector, the process of inserting bolts for the column head, and the process of fastening bolts for the column head are performed.

[0090] With this configuration, the above-mentioned effects are achieved, so that the design of the wooden three-story pagoda can be prevented from being damaged while effectively preventing the wooden three-story pagoda from collapsing due to strong winds such as those caused by typhoons.

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

[0092] According to this method, the washer 71 and the nut 72 can be attached to the upper end of the column base bolt 51 through the lower trench seat 116, so that the column base bolt 51 can be easily fastened to the column 111. In addition, only the upper end of the column base bolt 51 is exposed inside the lower trench seat 116, so that it is possible to further prevent the column base bolt 51 from impairing the design of the wooden building.

[0093] (3) Since the lower trench 116 is filled with wood, the upper end of the column base bolt 51 is not exposed through the lower trench 116. This prevents the column base bolt 51 from damaging the design of the wooden building.

[0094] <Modification> This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

[0095] The braid body 161 is not limited to the three-step-ahead braid, or the so-called three-step-ahead Tokyo, but can be another braid such as two-step-ahead, or can be the so-called cloud Tokyo. The filling process for the lower seat trench portion 116 and the upper seat trench portion 119 may be omitted.

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

[0097] In the above embodiment, after the cross member connector 150 is formed, the cross member connector 150 is lowered to insert the column head bolts 61, 62 into the through-holes 133, 134. Alternatively, before the cross member connector 150 is formed, only the upper cross member connector 130 may be lowered to insert the column head bolts 61, 62 into the through-holes 133, 134. In this case, after the column head bolt insertion step, the upper cross member connector 130 and the lower cross member connector 140 may be connected via the cross member bolts 41 extending in the vertical direction to form the cross member connector 150. The same applies to the two-layer and three-layer structures.

[0098] The number of side pillars 312 on the third floor can be twelve, just like on the second floor. The number of column base bolts 51 and the number of column top bolts 61, 62 provided on one column 111, 211, 311 may be changed.

[0099] The central pillar 80 may be extended to the first layer. The braid connector 160 may be omitted. In this case, the side pillars 112 may be extended to the height of the lower surface of the upper cross-member connector 130 as shown in FIG. [Explanation of symbols]

[0100] 41...Bolt for cross beam 51...Column base bolt 61,62...Column head bolts 71...Washer 72...Nut 80…Shinbashira 90…Fundamentals 91…Top surface 100...First layer assembly 110,210,310...Column connection body 111,211,311…pillars 112,212,312…Side pillar 113,213,313...Four Heavenly Pillars 114,214,314…legs 115,215…Lower insertion part 116,216…Lower seat moat 117...Head 118…Upper insertion part 119…Upper seat moat 120, 220...Connecting member 121…Base 130, 230...Upper cross member connector 131,132,231,232…Upper horizontal member 133, 134…Penetration section 140, 240…Lower cross member connector 141,142,241,242…Lower horizontal member 143…Receiving member 150... Cross member connector 160,260...braided connection body 161...Main body of assembly 162...Daito 163...Higigi 164...Dou 165…Plinth 170…Pillar 200…Two-layer assembly 300…Three 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, The wooden building comprises a plurality of stories, 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; A column base bolt fastening process for connecting the column connector to the foundation or the lower cross member by fastening the column base bolt and the column; a column capital bolt arranging step of arranging a column capital bolt on each of the columns so as to protrude upward from the upper end surface of the columns constituting the corresponding layer; An upper cross member connector forming process for forming an upper cross member connector that is configured by connecting a plurality of wooden upper cross members and has a through-hole that penetrates the upper cross members; A lower cross member connector forming process in which a plurality of the lower cross members are connected to form a lower cross member connector that is disposed above the upper cross member connector; a column head bolt insertion process of lowering the upper cross member connector to insert the column head bolt into the through-hole; a cross member connector forming process for forming a cross member connector by connecting the upper cross member connector and the lower cross member connector via a cross member bolt extending in the vertical direction before or after the column head bolt insertion process; and a column head bolt fastening step for fastening the column head bolt and the upper cross member to connect the cross member connector to the column connector, In each of the layers, the column base bolt arrangement process, the column connector formation process, the column base bolt insertion process, the column base bolt fastening process, the column head bolt arrangement process, the upper cross member connector formation process, the lower cross member connector formation process, the column head bolt insertion process, the cross member connector formation process, and the column head bolt fastening process are performed. Construction method of wooden buildings.

2. The wooden building is a multi-story tower. A method for constructing a wooden building according to claim 1.

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

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