Woody wall construction method and woody wall joint structure

Abstract

To improve the workability on a wooden wall to which a joint member and an anchor member are joined.SOLUTION: A woody wall construction method comprises: a slab construction process of constructing a slab 20 by casting concrete onto a concrete foundation beam 12 where lower parts of pull bolts 50 are embedded with a slab reinforcement 24 arranged and also with studs 64 installed protruding downward from a joint member 60; and a wooden wall joining process of joining a woody wall 40 to upper parts of the pull bolts 50 extending from the slab 20 and the joint member 60 on the slab 20.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a wooden wall construction method and a wooden wall joint structure. [Background technology]

[0002] 2. Description of the Related Art Wooden walls formed from CLT (Cross Laminated Timber) and the like are known (see, for example, Patent Documents 1 and 2).

[0003] In the technology disclosed in Patent Document 2, the lower part of a wooden wall is joined to tension bolts and shear hardware provided on the floor slab. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-172743 A [Patent Document 2] JP 2019-065685 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, it is conceivable that both the tension bolts joined to the lower part of the wooden wall and the anchor bolts for fixing the joining members such as shear hardware may be embedded in the concrete foundation beams of a reinforced concrete structure or the like.

[0006] However, in this case, when constructing the concrete foundation beam, it is necessary to precisely position the anchor members such as tension bolts and the anchor bolts for fixing the connecting members, which makes the construction time-consuming.

[0007] In consideration of the above, an object of the present invention is to improve the workability of a wooden wall to which a joining member and an anchor member are joined. [Means for solving the problem]

[0008] The wooden wall construction method described in claim 1 comprises a slab construction process in which concrete is poured onto a concrete foundation beam in which the lower parts of anchor members are embedded, with slab reinforcement arranged on the concrete foundation beam and shear connectors protruding downward from connecting members, to construct a slab, and a wooden wall joining process in which a wooden wall is joined to the upper parts of the anchor members extending from the slab and to the connecting members on the slab.

[0009] According to the wooden wall construction method of claim 1, first, in the slab construction step, slab reinforcement is arranged on the concrete foundation beam in which the lower part of the anchor member is embedded, and concrete is poured in a state where shear connectors protruding downward from the joint members are installed, and the slab is constructed. As a result, the shear connectors protruding downward from the joint members are embedded in the slab. In other words, the joint members are joined to the slab via the shear connectors.

[0010] Next, in the wooden wall joining process, the wooden wall is joined to the upper part of the anchor member extending from the slab and to the joining member on the slab. As a result, the wooden wall is joined to the concrete foundation beam via the anchor member and to the slab via the joining member and shear connector.

[0011] In this way, in the present invention, the anchor members are embedded in the concrete foundation beams, and the shear connectors protruding downward from the connecting members are embedded in the slabs, so that when the slabs are constructed, the connecting members can be positioned relative to the tops of the anchor members extending from the concrete foundation beams.

[0012] Therefore, in the present invention, the anchor members and the connecting members can be positioned more easily than in the case where both the anchor members and the anchor bolts for fixing the connecting members are embedded in the concrete foundation beam, and therefore the workability of the wooden wall is improved.

[0013] The wooden wall construction method described in claim 2 is the wooden wall construction method described in claim 1, in which, in the slab construction process, the anchor members and the joining members are positioned via a fixing jig, and in the wooden wall joining process, after removing the fixing jig, the wooden wall is joined to the upper part of the anchor member and the joining member.

[0014] According to the wooden-wall construction method of claim 2, in the slab construction step, the anchor members and the joint members are positioned via the fixing jig. Then, in the wooden-wall joining step, after removing the fixing jig, the wooden wall is joined to the upper part of the anchor member and the joint member.

[0015] By positioning the anchor members and the connecting members via the fixing jig in this manner, the anchor members and the connecting members can be easily positioned, thereby further improving the ease of construction of the wooden wall.

[0016] The wooden wall joint structure described in claim 3 comprises a concrete foundation beam, a slab placed on the concrete foundation beam, a wooden wall placed on the slab, an anchor member whose upper end is joined to the wooden wall and whose lower end penetrates the slab and is embedded in the concrete foundation beam, a connecting member placed on the slab and joined to the wooden wall, and a shear connector that protrudes downward from the connecting member and is embedded in the slab.

[0017] According to the wooden wall joint structure of claim 3, a slab is provided on a concrete foundation beam. A wooden wall is provided on the slab. An upper end of an anchor member is joined to the wooden wall. A lower portion of the anchor member penetrates the slab and is embedded in the concrete foundation beam.

[0018] A joint member arranged on the slab is joined to the wooden wall. The joint member is provided with a shear connector. The shear connector protrudes downward from the joint member and is embedded in the slab.

[0019] In this way, in the present invention, the anchor members are embedded in the concrete foundation beams, and the shear connectors protruding downward from the connecting members are embedded in the slabs, so that when the slabs are constructed, the connecting members can be positioned relative to the tops of the anchor members extending from the concrete foundation beams.

[0020] Therefore, in the present invention, the anchor members and the connecting members can be positioned more easily than in the case where both the anchor members and the anchor bolts for fixing the connecting members are embedded in the concrete foundation beam, and therefore the workability of the wooden wall is improved. Effect of the Invention

[0021] As described above, according to the present invention, it is possible to improve the workability of a wooden wall to which a joining member and an anchor member are joined. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is an elevation view showing a concrete foundation beam, a slab, and a wooden wall to which a wooden-wall joint structure according to one embodiment is applied. [Diagram 2] FIG. 2 is a vertical cross-sectional view showing the concrete foundation beam, slab, and wooden wall shown in FIG. 1. [Diagram 3] 3 is a cross-sectional view taken along line 3-3 of FIG. 2. [Figure 4] 4 is a cross-sectional view taken along line 4-4 of FIG. 2. [Diagram 5] 3 is a cross-sectional view corresponding to FIG. 2 showing a construction process of a wooden wall construction method according to one embodiment. [Figure 6] FIG. 6 is a plan view of FIG. 5 showing the fixing jig. [Figure 7] 3 is a cross-sectional view corresponding to FIG. 2 showing a construction process of a wooden wall construction method according to one embodiment. [Figure 8] FIG. 8 is a plan view of FIG. 7 showing the fixing jig. [Figure 9] 3 is a cross-sectional view corresponding to FIG. 2 showing a construction process of a wooden wall construction method according to one embodiment. [Figure 10]3 is a cross-sectional view corresponding to FIG. 2 showing a construction process of a modified example of the wooden wall construction method according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, one embodiment will be described with reference to the drawings.

[0024] (Wood wall joint structure) 1 and 2 show a structure (building) 10 to which the wooden-wall joint structure according to this embodiment is applied. The structure 10 includes a concrete foundation beam 12, a slab 20, and a wooden wall 40. The concrete foundation beam 12 is made of reinforced concrete, steel-reinforced concrete, or the like. The slab 20 is provided on the concrete foundation beam 12.

[0025] The slab 20 forms the floor of the structure 10. The slab 20 is made of reinforced concrete, and has a plurality of slab reinforcements 24 (see FIG. 5) buried inside. A rising portion 22 is provided on the upper surface of the slab 20. A wooden wall 40 is installed on the rising portion 22.

[0026] The wooden wall 40 is formed of, for example, CLT. The wooden wall 40 is joined to the concrete foundation beam 12 via a pair of tension bolts 50 that penetrate the slab 20, and is joined to the slab 20 via a joining member 60.

[0027] The wooden wall 40 is not limited to CLT, and may be formed of other wooden materials such as laminated veneer lumber (LVL) or laminated lumber.

[0028] (Tension bolt) The pair of tension bolts 50 are tension force transmission members (tensile wires) that connect the wooden wall 40 and the concrete foundation beam 12 so as to be able to transmit tension force. The pair of tension bolts 50 are disposed on both ends of the wooden wall 40 in the width direction (direction of arrow W), and their lower parts are embedded in the concrete foundation beam 12 and the slab 20. Furthermore, mechanical anchors 52 embedded in the concrete foundation beam 12 are provided at the lower ends of the pair of tension bolts 50. The mechanical anchors 52 may be omitted.

[0029] 3, the upper portions of the pair of tension bolts 50 extend upward from the upper surface 22U of the rising portion 22 provided on the upper surface of the slab 20. The upper portions of the tension bolts 50 are inserted into mounting holes 42 formed in the lower end surface 40L of the wooden wall 40. In addition, a mounting opening 44 is formed in the lower portion of the wooden wall 40.

[0030] The mounting opening 44 is a rectangular through-hole that penetrates the wooden wall 40 in the thickness direction (direction of arrow T). The mounting opening 44 is connected to the mounting hole 42. The upper end of a tension bolt 50 inserted into the mounting hole 42 is disposed in the mounting opening 44. A nut 56 is fastened to the upper end of the tension bolt 50 via a washer 54, so that the lower part of the wooden wall 40 is joined to the slab 20 and the concrete foundation beam 12 via the tension bolt 50.

[0031] The tension bolt 50 is an example of the anchor member. The anchor member is not limited to the tension bolt 50, and may be, for example, an anchor bolt or the like.

[0032] (Jointing material) 1 and 2, the joint member 60 is a metal joint that joins the wooden wall 40 and the slab 20 in a manner that allows the transmission of shear force. The joint member 60 is disposed between a pair of tension bolts 50. The joint member 60 also has a base plate 62, a joint plate 70, and a pair of temporary support brackets 80.

[0033] 4, the base plate 62 is made of a steel plate or the like, and is disposed so that its lower surface fits along the upper surface of the slab 20. A plurality of studs 64 are provided on the lower surface of the base plate 62. The plurality of studs (headed studs) 64 protrude downward from the lower surface of the base plate 62 and are embedded in the slab 20. Shear force is transmitted between the connecting member 60 and the slab 20 via these studs 64.

[0034] The stud 64 is an example of a shear connector. Also, the shear connector is not limited to the stud 64, and may be, for example, a reinforcing bar or a dowel.

[0035] The joint plate 70 is made of a steel plate or the like, and is disposed along the width direction (direction of the arrow W) of the wooden wall 40. The joint plate 70 is joined to the base plate 62 in a T-shaped cross section. The joint plate 70 extends upward from the base plate 62, and its upper end side is inserted into an insertion hole 46 formed in the lower end surface of the wooden wall 40.

[0036] The insertion hole (insertion groove) 46 is a groove-shaped hole extending in the width direction of the wooden wall 40. In addition, a plurality of through holes 48 communicating with the insertion hole 46 are formed in the surface of the lower part of the wooden wall 40.

[0037] On the other hand, a plurality of through holes 72 that communicate with the plurality of through holes 48 are formed on the upper end side of the joint plate 70. By inserting (driving) drift pins 74 into these through holes 48, 72, the upper end side of the joint plate 70 and the lower part of the wooden wall 40 are joined so as to be able to transmit shear forces.

[0038] The drift pin 74 is an example of a joint pin (shear force transmission member).

[0039] A pair of temporary support brackets 80 for supporting the lower end surface 40L of the wooden wall 40 is provided in the vertical middle of the joining plate 70. The pair of temporary support brackets 80 are formed from L-shaped steel, and are arranged on both sides in the thickness direction (arrow T direction) of the joining plate 70. Each temporary support bracket 80 has a base portion 80A and a temporary support portion 80B connected with an L-shaped cross section.

[0040] The base portions 80A of the pair of temporary support brackets 80 are joined by bolts 82 and nuts 84 in a state in which the vertical middle portion of the joining plate 70 is sandwiched from both sides. A temporary support portion 80B is provided on the upper end portion of the base portions 80A.

[0041] The temporary support portion 80B protrudes outward from the upper end of the base portion 80A, i.e., from the vertical middle portion of the joining plate 70, along the lower end surface 40L of the wooden wall 40, and supports the lower end surface 40L. The protruding length of the temporary support portion 80B is set so that the temporary support portion 80B does not protrude from the surface of the wooden wall 40.

[0042] The extension length of the temporary support portion 80B may be set so that the tip of the temporary support portion 80B is flush with the surface of the wooden wall 40, or may be set so that it protrudes from the surface of the wooden wall 40.

[0043] The temporary support portion 80B is disposed above the base plate 62 and faces the base plate 62. A filler G is filled between the upper surface 22U of the rising portion 22 of the slab 20 and the lower surface of the temporary support portion 80B and the lower end surface 40L of the wooden wall 40.

[0044] The filler G is, for example, a cement-based filler such as mortar or grout. The filler G fills gaps between the upper surface 22U of the rising portion 22 and the lower surface of the temporary support portion 80B and the lower end surface 40L of the wooden wall 40. The temporary support portions 80B of the pair of temporary support brackets 80 are embedded in the filler G.

[0045] The pair of temporary support brackets 80 and the filler G may be provided as necessary and may be omitted as appropriate. In addition, when the pair of temporary support brackets 80 and the filler G are omitted, for example, the lower end surface 40L of the wooden wall 40 is placed on the upper surface 22U of the rising portion 22 of the slab 20.

[0046] (Wood wall construction method) Next, an example of a wooden wall construction method will be described.

[0047] (Foundation beam construction process) As shown in Fig. 5, first, in the foundation beam construction process, the concrete foundation beam 12 is constructed. Specifically, first, a formwork for the concrete foundation beam 12 is temporarily constructed, and the main beam reinforcement and shear reinforcement (not shown) are arranged in the formwork. In addition, the lower parts of a pair of tension bolts 50 are placed at predetermined positions in the formwork. Next, concrete is poured into the formwork.

[0048] As a result, the lower portions of the pair of tension bolts 50 are embedded in predetermined positions in the concrete foundation beam 12. In addition, the upper portions of the pair of tension bolts 50 extend upward from the upper surface of the concrete foundation beam 12.

[0049] (Slab construction process) Next, in the slab construction process, a formwork (not shown) for the slab 20 is temporarily constructed around the concrete foundation beam 12 in which the lower parts of a pair of tensile bolts 50 are buried, and the slab reinforcement 24 of the slab 20 (including the rising portion 22) is arranged on the concrete foundation beam 12 and the formwork.

[0050] In FIG. 5, the slab reinforcement of the rising portion 22 is omitted in order to avoid complicating the drawing.

[0051] Additionally, a plurality of studs 64 protruding downward from the base plate 62 of the connecting member 60 are installed on the concrete foundation beam 12. In this state, concrete is poured onto the concrete foundation beam 12 and onto a formwork (not shown), and the slab 20 (including the rising portion 22) is constructed.

[0052] At this time, the joining member 60 is positioned on the pair of pulling bolts 50 via a fixing jig 90. Specifically, as shown in Figures 5 and 6, the joining member 60 is previously detachably joined (temporarily joined) to the fixing jig 90. This fixing jig 90 has a pair of base frames 92 and a plurality of positioning brackets 94 (see Figure 7).

[0053] The pair of base frames 92 are formed of, for example, C-shaped steel, and are arranged back-to-back. The pair of base frames 92 sandwich the joining plate 70 of the joining member 60 from both sides, and are detachably joined to the joining plate 70 by bolts 82 and nuts.

[0054] The base frame 92 is not limited to a C-shaped steel, and may be formed of, for example, an H-shaped steel, etc. In the present embodiment, the bolts 82 are inserted into the through holes 72 for the drift pins 74 (see FIG. 4) formed in the joining plate 70, but the bolts 82 may be inserted into other through holes.

[0055] The fixing jig 90 to which the connecting members 60 have been joined in this manner is lifted by a lifting machine (not shown) or the like, and lowered to a predetermined position on the concrete foundation beams 12, as shown in Fig. 7. At this time, the upper parts of the pair of tension bolts 50 extending upward from the concrete foundation beams 12 are inserted between a pair of base frames 92 of the fixing jig 90, and are made to extend upward from the pair of base frames 92. As a result, the connecting members 60 are positioned relative to the pair of tension bolts 50 in the thickness direction of the wooden wall 40 (the direction of arrow T).

[0056] Furthermore, level adjustment nuts 58 are attached to the pair of pulling bolts 50, respectively. The levels of the level adjustment nuts 58 are adjusted in advance. By placing the pair of base frames 92 on these level adjustment nuts 58, the joining member 60 is positioned at a predetermined level.

[0057] 7 and 8, the upper part of each tension bolt 50 is sandwiched from both sides in the width direction (arrow W direction) of the wooden wall 40 by the pair of positioning brackets 94, and the pair of positioning brackets 94 are detachably fixed to the pair of base frames 92 by bolts 96. As a result, the joining member 60 is positioned in the width direction of the wooden wall 40 with respect to the pair of tension bolts 50.

[0058] With the connecting member 60 positioned on the pair of tension bolts 50 in this manner via the fixing jig 90, concrete is poured onto the concrete foundation beam 12 and a formwork not shown, and the slab 20 (including the raised portion 22) is constructed.

[0059] In this embodiment, the positioning bracket 94 is formed of an L-shaped steel. However, the positioning bracket 94 is not limited to an L-shaped steel, and may be formed of, for example, a C-shaped steel or the like.

[0060] (Wood wall joining process) Next, as shown in FIG. 9, in the wooden wall joining process, after removing the fixing jig 90, the upper parts of a pair of tension bolts 50 extending from the slab 20 and the upper end side of the joining member 60 on the slab 20 are joined to the wooden wall 40.

[0061] Specifically, the positioning brackets 94 are detached and removed from the pair of base frames 92 of the fixing jig 90, and the pair of base frames 92 are detached and removed from the joining member 60.

[0062] Next, the wooden wall 40 is lifted up by a lifting machine (not shown) or the like, and the upper part of the pulling bolt 50 extending upward from the upper surface 22U of the rising portion 22 of the slab 20 is inserted into the mounting hole 42 formed in the lower end surface 40L of the wooden wall 40 as shown in Fig. 2. Also, the upper end side of the joining plate 70 extending upward from the upper surface 22U of the rising portion 22 is inserted into the insertion hole 46 formed in the lower end surface 40L of the wooden wall 40. In this state, the lower end surface 40L of the wooden wall 40 is placed on the temporary support portions 80B of the pair of temporary support brackets 80.

[0063] Next, in the mounting opening 44 formed in the lower part of the wooden wall 40, a nut 56 is fastened to the upper end of the tension bolt 50 via a washer 54. This joins the lower part of the wooden wall 40 to the slab 20 and the concrete foundation beam 12 via the pair of tension bolts 50.

[0064] Further, the drift pins 74 are inserted (driven) into the through holes 48, 72 formed in the wooden wall 40 and the joint plate 70. As a result, the lower part of the wooden wall 40 is joined to the slab 20 via the joint member 60.

[0065] Next, a formwork (not shown) is temporarily set around the lower end of the wooden wall 40, and the filler G is filled between the upper surface 22U of the rising portion 22 and the lower end surface 40L of the wooden wall 40, and then hardened. As a result, the gaps between the upper surface 22U of the rising portion 22 and the lower surface of the temporary support portion 80B and the lower end surface 40L of the wooden wall 40 are filled with the filler G.

[0066] (Action and Effects) Next, the operation and effects of this embodiment will be described.

[0067] As described above, according to this embodiment, the pair of tension bolts 50 are embedded in the concrete foundation beam 12, and the multiple studs 64 of the connecting member 60 are embedded in the slab 20. As a result, in this embodiment, the connecting member 60 can be positioned relative to the upper portions of the pair of tension bolts 50 extending upward from the concrete foundation beam 12 when the slab 20 is constructed.

[0068] Therefore, in this embodiment, the pair of tension bolts 50 and the connecting members 60 can be positioned more easily than when, for example, both the pair of tension bolts 50 and the anchor bolts for fixing the connecting members 60 are embedded in the concrete foundation beams 12. This improves the workability of the wooden wall 40.

[0069] In this embodiment, the pair of tension bolts 50 and the joint member 60 are positioned via a fixing jig 90. This makes it possible to easily position the pair of tension bolts 50 and the joint member 60. This further improves the ease of construction of the wooden wall 40.

[0070] A pair of temporary support brackets 80 are provided on the joining plate 70 of the joining member 60. The pair of temporary support brackets 80 have temporary support portions 80B. The temporary support portions 80B protrude from the vertical middle portion of the joining plate 70 to both sides in the thickness direction of the joining plate 70, and support the lower end surface 40L of the wooden wall 40 above the rising portion 22. A filler G is filled between the upper surface 22U of the rising portion 22 and the lower surface of the temporary support portions 80B.

[0071] In this way, the lower end surface 40L of the wooden wall 40 is supported by the temporary support portion 80B provided on the joint member 60, and the filler G is filled between the upper surface 22U of the rising portion 22 and the lower surface of the temporary support portion 80B, thereby absorbing unevenness of the upper surface 22U of the rising portion 22. Therefore, the wooden wall 40 can be installed stably on the rising portion 22.

[0072] In this embodiment, the filler G is also filled between the upper surface 22U of the rising portion 22 and the lower end surface 40L of the wooden wall 40. In other words, the pair of temporary support brackets 80 are entirely embedded in the filler G, and the pair of temporary support brackets 80 are not exposed to the outside. This improves the design of the wooden wall 40 and inhibits corrosion of the pair of temporary support brackets 80.

[0073] In this embodiment, the slab 20 is provided with a rising portion 22. This prevents, for example, water accumulated on the upper surface of the slab 20 from being sucked up from the lower end surface 40L of the wooden wall 40. Therefore, corrosion of the wooden wall 40 is suppressed.

[0074] (Modification) Next, a modification of the above embodiment will be described.

[0075] In the above embodiment, one connecting member 60 is positioned on a pair of tension bolts 50 by the fixing jig 90. However, the number and arrangement of the tension bolts 50 and connecting members 60 positioned by the fixing jig 90 can be changed as appropriate. For example, in the modified example shown in Fig. 10, two connecting members 60 are positioned on two pairs of tension bolts 50 by the fixing jig 90.

[0076] 10, two connecting members 60 are detachably joined (temporarily joined) to the fixing jig 90. The fixing jig 90 sets the interval L between adjacent connecting members 60 to a predetermined value. In other words, the fixing jig 90 positions the adjacent connecting members 60 in the width direction (direction of arrow W) of the wooden wall 40. This improves the workability of the adjacent wooden walls 40.

[0077] Moreover, it is possible to appropriately change the shape and structure of the fixing jig 90. Moreover, it is also possible to position the joining member 60 on the pair of pulling bolts 50 by other methods without using the fixing jig 90.

[0078] In the above embodiment, the slab 20 is provided with the rising portion 22. However, the rising portion 22 may be provided as necessary and may be omitted as appropriate.

[0079] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it is of course possible to implement the present invention in various forms without departing from the gist of the present invention. [Explanation of symbols]

[0080] 12 Concrete foundation beam 20 Slab 24 Slab Reinforcement 40 Wooden wall 60 Joint materials 64 Stud (Shear Connector) 90 Fixture

Claims

1. a slab construction process in which slab reinforcement is arranged on the concrete foundation beam in which the lower part of the anchor member is buried, and concrete is poured in a state in which a shear connector protruding downward from the joint member is installed, and a slab is constructed; A wooden wall joining process of joining a wooden wall to an upper portion of the anchor member extending from the slab and to the joining member on the slab; A wooden wall construction method comprising:

2. In the slab construction step, the anchor member and the joint member are positioned via a fixing jig, In the wooden wall joining step, after removing the fixing jig, the wooden wall is joined to the upper part of the anchor member and the joining member. The wooden wall construction method according to claim 1.

3. A concrete foundation beam; A slab provided on the concrete foundation beam; A wooden wall provided on the slab; An anchor member whose upper end is joined to the wooden wall and whose lower end penetrates the slab and is embedded in the concrete foundation beam; A joint member is placed on the slab and joined to the wooden wall; A shear connector protruding downward from the joint member and embedded in the slab; A wooden wall joint structure equipped with:

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