Method of installing column covering material

Abstract

The purpose is to reduce the effort required to attach covering material to the sides of column members. [Solution] The method for installing the column covering material involves supporting the connecting pins 40 provided at both ends of the column member 30 with a rotating base 80, and then attaching the fire-resistant board 36 to the side surface 30S of the column member 30 that faces upward.

Description

Technical Field

[0001] The present invention relates to a method for constructing a column covering material.

Background Art

[0002] A fireproof covering structure in which a steel column is covered with a fireproof board is known (for example, see Patent Document 1).

[0003] Also, a welding method is known in which a steel wall is rotated so that the welded portion of the steel wall faces upward, and the welded portion is welded downward (for example, see Patent Document 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, when attaching a covering material such as a fireproof board to each side surface of a column member, for example, the column member is placed horizontally on a work floor, and the covering material is attached to the side surface of the column member facing upward. Next, the column member is rolled on the work floor, or the column member is lifted and rotated so that another side surface of the column member faces upward, and the covering material is attached to the side surface.

[0006] However, in the above method, the column member has to be rolled on the work floor or lifted and rotated, which takes time to attach the covering material.

[0007] In consideration of the above facts, an object of the present invention is to reduce the labor for attaching the covering material to the side surface of the column member.

Means for Solving the Problems

[0008] The method for installing a column covering material according to claim 1 involves supporting the rotating shafts provided at both ends of the column member with a rotating base, and then attaching the covering material to the side surface of the column member facing upward.

[0009] According to the method for installing a column covering material according to claim 1, the covering material is attached to the side surface of the column member facing upward while the rotating shafts provided at both ends of the column member are supported by a rotating base. Therefore, the covering material can be easily attached to the side surface of the column member.

[0010] Furthermore, after attaching the covering material to the side of the column member facing upwards, the column member can be rotated around the axis of rotation, allowing the other side of the column member to face upwards. As a result, other covering materials can be easily attached to the other side of the column member.

[0011] Therefore, the effort required to attach the covering material to the side surface of the column member can be reduced.

[0012] The method for installing a column covering material according to claim 2 is the method for installing a column covering material according to claim 1, wherein after attaching the covering material to the side surface of the column member facing upward, the column member is rotated around the rotation axis so that the other side surface of the column member faces upward, and another covering material is attached to the other side surface.

[0013] According to the method for installing a column covering material according to claim 2, after attaching the covering material to the side of the column member facing upward, the column member is rotated around the axis of rotation so that the other side of the column member faces upward. This makes it easy to attach other covering materials to the other side of the column member.

[0014] Therefore, the effort required to attach the covering material to the side surface of the column member can be reduced.

[0015] The method for installing a column covering material according to claim 3 is the method for installing a column covering material according to claim 1 or claim 2, wherein the rotating shaft is a connecting pin that is joined to a structural member.

[0016] According to the method for installing the column covering material according to claim 3, the rotating shafts provided at both ends of the column member are used as joining pins that are joined to the structural member. By diverting the joining pins that are joined to the structural member as the rotating shafts of the column member, in the present invention, compared with the case where rotating shafts are provided at both ends of the column member separately from the joining pins, the number of parts can be reduced.

Effect of the Invention

[0017] As described above, according to the present invention, the labor for attaching the covering material to the side surface of the column member can be reduced.

Brief Description of the Drawings

[0018] [Figure 1] It is a longitudinal sectional view showing a column member to which a fireproof board is attached to each side surface by the method for installing the column covering material according to one embodiment. [Figure 2] It is a sectional view taken along line 2-2 of FIG. 1. [Figure 3] It is a longitudinal sectional view showing the joint portion between the column member shown in FIG. 1 and the lower precast beam. [Figure 4] It is a longitudinal sectional view showing the joint portion between the column member shown in FIG. 1 and the upper precast beam. [Figure 5] It is a side view of a column member showing the construction process of the method for installing the column covering material according to one embodiment. [Figure 6] It is a view of the column member shown in FIG. 5 as seen from the material axis direction. [Figure 7] It is a view corresponding to FIG. 6 showing the construction process of the method for installing the column covering material according to one embodiment.

Mode for Carrying Out the Invention

[0019] Hereinafter, an embodiment will be described with reference to the drawings.

[0020] (Column Member) Figure 1 shows a column member 30 with fire-resistant boards 36 attached to each side 30S according to the construction method of the column covering material according to this embodiment. The column member 30 is, as an example, a wooden column (wooden column). The column member 30 is formed in a rectangular column shape and has four side 30S. The fire-resistant board 36 is an example of a fire-resistant covering material and covering material.

[0021] (Fire-resistant board) The fire-resistant board 36 is made of, for example, gypsum board or calcium silicate board, and is attached to each side 30S of the column member 30 by adhesive or screws.

[0022] The fire-resistant boards 36 are attached to each side surface 30S of the column member 30 in a state where they are laminated in multiple layers (three layers in this embodiment). The column member 30 is fire-resistant coated by these fire-resistant boards 36.

[0023] Furthermore, the fire-resistant board 36 is not limited to multiple layers; it may be a single layer. Also, the fire-resistant board 36 does not necessarily need to be attached to all sides 30S of the column member 30, but can be attached to at least one side 30S of the column member 30.

[0024] (Connecting pin) Each end of the column member 30 is provided with connecting pins 40. The pair of connecting pins 40 are connected to the lower precast beam 70 (see Figure 3) or the upper precast beam 50 (see Figure 4), which will be described later. The pair of connecting pins 40 are also arranged coaxially and function as a pivot when attaching the fire-resistant board 36 to each side 30S of the column member 30.

[0025] Note that the lower precast beam 70 and the upper precast beam 50 are examples of structural members.

[0026] Mounting holes 32 are formed in the center of both end faces of the column member 30, into which one end of a connecting pin 40 is inserted. The mounting holes 32 are circular, bottomed holes. Cover plates 46 are also provided on both end faces of the column member 30.

[0027] The cover plate (sealing plate) 46 is made of steel plate or the like. This cover plate 46 is superimposed on the end face (upper end face or lower end face) of the column member 30, and covers the end face over substantially its entire surface.

[0028] A through hole is formed in the center of the cover plate 46, leading to the mounting hole 32. One end of the connecting pin 40 is inserted through this through hole in the cover plate 46 into the mounting hole 32 formed on the end face of the column member 30.

[0029] The cover plate 46 may be provided as needed and can be omitted as appropriate.

[0030] The connecting pin 40 is formed in a rod shape, for example, from a round steel bar. A pair of pin holes 42 are formed at one end of the connecting pin 40. The pair of pin holes 42 are circular through holes that penetrate the connecting pin 40 in the width direction (radial direction).

[0031] As shown in Figure 2, the pair of pin holes 42 intersect (are perpendicular to) each other when viewed from the axial direction of the connecting pin 40, and are offset in the axial direction of the connecting pin 40. A pair of fixing pins 44 are inserted into this pair of pin holes 42.

[0032] The pair of fixing pins 44 are formed from rod-shaped members such as drift pins. The pair of fixing pins 44 are inserted into a pair of pin holes 42 formed in the connecting pin 40, and also into a pair of pin holes 34 formed in the side surface 30S of the column member 30.

[0033] The pair of pin holes 34 are circular through-holes that penetrate the column member 30 and the mounting hole 32 in the width direction. In plan view, the pair of pin holes 34 intersect (are perpendicular to each other) and are offset in the direction of the material axis of the column member 30. The connecting pin 40 is fixed to the column member 30 by inserting the fixing pin 44 into the mutually connecting pin holes 34 and 42.

[0034] The pair of fixing pins 44 are covered by the fire-resistant board 36. Furthermore, the connecting pins 40 are not limited to the pair of fixing pins 44; they may also be fixed to the column member 30 by other fixing methods, such as adhesive.

[0035] The other end of the connecting pin 40 protrudes from the cover plate 46 that covers the end face of the column member 30. A male thread is also formed on the other end of the connecting pin 40. The other end of this connecting pin 40 is inserted into the insertion hole 74 of the lower precast beam 70 (see Figure 3), or the insertion hole 54 of the upper precast beam 50 (see Figure 4), which will be described later.

[0036] The male thread on the other end of the connecting pin 40 may be provided as needed, but can be omitted as appropriate.

[0037] (Lower precast beam) As shown in Figure 3, the lower end of the column member 30 is joined (pin-jointed) to the lower precast beam 70 via a connecting pin 40. The lower precast beam 70 is made of precast concrete and is manufactured, for example, in a factory or site yard. The lower precast beam 70 is made of reinforced concrete and has multiple main beam reinforcements 76 and shear reinforcements 78 embedded inside.

[0038] The lower precast beam 70 is a through beam. This lower precast beam 70 has a joint portion 72 that is joined to the column member 30, and a beam portion (not shown) that extends from the joint portion 72. An insertion hole 74 is formed in the center of the upper surface of the joint portion 72.

[0039] The insertion hole 74 is a circular, bottomed hole. The insertion hole 74 is formed, for example, by embedding a sleeve in the joint portion 72. With the other end (lower end) of the connecting pin 40 inserted into this insertion hole 74, a filler material (cement-based filler) M such as mortar or grout is filled in.

[0040] Multiple leveling bolts 60 are provided around the insertion hole 74 on the upper surface of the joint portion 72. The multiple leveling bolts 60 protrude from the upper surface of the joint portion 72. By placing the lower end surface of the column member 30 on these leveling bolts 60, a joint is formed between the upper surface of the joint portion 72 and the lower end surface of the column member 30. This joint is filled with a filler material M.

[0041] Furthermore, the joint portion 72 of the lower precast beam 70 may be joined to, for example, a column from the lower floor.

[0042] (Upper precast beam) As shown in Figure 4, the upper end of the column member 30 is joined (pin-jointed) to the upper precast beam 50 via a connecting pin 40. The upper precast beam 50 is made of precast concrete and is manufactured, for example, in a factory or site yard. The upper precast beam 50 is made of reinforced concrete and has multiple main beam reinforcements 56 and shear reinforcements 58 embedded inside.

[0043] The upper precast beam 50 is a through beam. This upper precast beam 50 has a joint portion 52 that connects to the upper and lower column members 30, and a beam portion (not shown) that extends from the joint portion 52. An insertion hole 54 is formed in the center of the upper surface of the joint portion 52.

[0044] The insertion hole 54 is a circular through-hole that penetrates the joint portion 52 in the beam height direction (vertical direction). The insertion hole 54 is formed, for example, by embedding a sleeve in the joint portion 52. The other end (upper end) of the connecting pin 40, which is provided at the upper end of the column member 30 installed below the joint portion 52, is inserted into the lower end of this insertion hole 54.

[0045] Meanwhile, the other end (lower end) of the connecting pin 40, which is provided at the lower end of the column member 30 installed above the joint portion 52, is inserted into the upper end of the insertion hole 54. In this state, the upper precast beam 50 and the upper and lower column members 30 are joined by filling the insertion hole 54 with filler material M.

[0046] In this embodiment, the configuration of the column members 30 installed above and below the upper precast beam 50 (joint portion 52) is the same, but the configuration of these column members 30 may be different.

[0047] (Leveling bolt) A cover plate 46 covering the upper end surface of the column member 30, which is installed below the upper precast beam 50, is provided with multiple level adjustment bolts 60. The multiple level adjustment bolts 60 are arranged around the connecting pin 40 and protrude from the upper surface of the cover plate 46. By placing the lower surface of the joint portion 52 of the upper precast beam 50 on these level adjustment bolts 60, a joint is formed between the upper end surface of the column member 30 and the lower surface of the joint portion 52. This joint is filled with a filler material M.

[0048] Multiple leveling bolts 60 are provided around the insertion hole 74 on the upper surface of the joint portion 52 of the upper precast beam 50. The multiple leveling bolts 60 protrude from the upper surface of the joint portion 52. By placing the lower end surface (cover plate 46) of the column member 30, which is installed above the joint portion 52, on top of these leveling bolts 60, a joint is formed between the upper surface of the joint portion 52 and the lower end surface of the column member 30. This joint is filled with a filler material M.

[0049] Furthermore, by placing the cover plate 46 on top of the multiple level adjustment bolts 60, the indentation of the multiple level adjustment bolts 60 into the column member 30 is suppressed.

[0050] (Installation method for column covering material) Next, an example of a method for installing the column covering material according to this embodiment will be described.

[0051] As shown in Figures 5 and 6, in this embodiment, the connecting pins 40 provided at both ends of the column member 30 are supported by a pair of rotating bases 80, and the fire-resistant board 36 is attached to the side surface 30S of the column member 30 facing upwards.

[0052] Specifically, the pair of turntables 80 are arranged facing each other. Each turntable 80 has a pair of support columns 82, a support member 84 spanning the pair of support columns 82, and diagonal members 86 reinforcing the support member 84. The support member 84 is formed in a beam shape.

[0053] The upper surface of the receiving member 84 is a substantially horizontal receiving surface 84U. The receiving surfaces 84U of the pair of rotating bases 80 are positioned at approximately the same height. A column member 30 is placed horizontally between the pair of rotating bases 80, and connecting pins 40 protruding from both end faces of the column member 30 are placed on the receiving surfaces 84U of the pair of rotating bases 80. Cover plates 46 and connecting pins 40 are pre-attached to both ends of the column member 30.

[0054] With the pair of connecting pins 40 provided at both ends of the column member 30 supported by the pair of rotating bases 80, the fire-resistant board 36 is attached to one side surface 30S of the column member 30 facing upwards.

[0055] Next, as shown in Figure 7, the column member 30 is rotated in a predetermined direction around the pair of connecting pins 40 so that one side 30S of the column member 30 and the other side 30S adjacent to it face upward. Then, another fire-resistant board 36 is attached to the other side 30S.

[0056] By repeating the above procedure, multiple layers of fire-resistant boards 36 are sequentially attached to each side 30S of the column member 30.

[0057] When attaching the fire-resistant board 36 to the side surface 30S of the column member 30, the column member 30 may be temporarily fixed so that it does not rotate around the pair of connecting pins 40. Furthermore, the configuration of the rotating base 80 is not limited to the above and can be changed as appropriate.

[0058] (effect) Next, the effects of this embodiment will be described.

[0059] As described above, according to the method for installing the column covering material according to this embodiment, the fire-resistant board 36 is attached to the side surface 30S of the column member 30 facing upwards, while the pair of connecting pins 40 provided at both ends of the column member 30 are supported by a pair of rotating bases 80. Therefore, the fire-resistant board 36 can be easily attached to the side surface 30S of the column member 30.

[0060] Furthermore, after attaching the fire-resistant board 36 to the side 30S of the column member 30 facing upward, the column member 30 is rotated around the pair of connecting pins 40 so that the other side 30S of the column member 30 faces upward. This makes it easy to attach other fire-resistant boards 36 to the other side 30S of the column member 30.

[0061] Therefore, the effort required to attach the fire-resistant board 36 to the side surface 30S of the column member 30 can be reduced.

[0062] Furthermore, in this embodiment, a pair of connecting pins 40 provided at both ends of the column member 30 are connected to the lower precast beam 70 or the upper precast beam 50. By reusing the pair of connecting pins 40, which are connected to the lower precast beam 70 or the upper precast beam 50 in this way, as the rotation axis of the column member 30, the number of parts can be reduced in this embodiment compared to the case where a pair of rotation axes are provided at both ends of the column member 30 separately from the connecting pins 40.

[0063] (modified version) Next, a modified example of the above embodiment will be described.

[0064] In the above embodiment, the connecting pin 40 of the column member 30 is joined to the lower precast beam 70 or the upper precast beam 50. However, the connecting pin 40 is not limited to concrete beams such as the lower precast beam 70 or the upper precast beam 50, but may also be joined to a concrete beam formed by cast-in-place concrete, or to a steel beam.

[0065] Furthermore, the connecting pin 40 is not limited to beams (structural members) such as concrete beams or steel beams, but may also be connected to structural members (framework) such as slabs or foundations. Also, the connection structure between the connecting pin 40 and beams, slabs, foundations, etc. is not limited to those described above and can be changed as appropriate.

[0066] Furthermore, in the above embodiment, the rotation axis is a connecting pin 40. However, the rotation axis is not limited to a permanent member such as a connecting pin 40, but may also be a temporary member attached to both ends of a column member 30 when attaching a fire-resistant board 36 to the side surface 30S of the column member 30.

[0067] Furthermore, in the above embodiment, the covering material is a fire-resistant board 36. However, the covering material is not limited to a fire-resistant board 36, but may be a fire-resistant covering material such as a wrap-around fire-resistant covering material. Also, the covering material is not limited to a fire-resistant covering material, but may be a finishing material, for example.

[0068] Furthermore, in the above embodiment, the column member 30 is made of wood. However, the column member is not limited to wood; for example, it may be made of reinforced concrete, steel-reinforced concrete, or steel.

[0069] Although one embodiment of the present invention has been described above, the present invention is not limited to these embodiments, and various modifications may be used in appropriate combinations with one embodiment, and of course, the invention can be implemented in various forms without departing from the spirit of the present invention. [Explanation of Symbols]

[0070] 30 Column members 30S side 36. Fire-resistant board (covering material) 40 Connecting pins (rotating shafts) 50 Upper precast beam (structural member) 70 Lower precast beam (structural member) 80 rotations

Claims

1. With the rotating shafts provided at both ends of the column member supported by a rotating base, a covering material is attached to the side surface of the column member facing upward. Installation method for column covering material.

2. After attaching the covering material to the side surface of the column member facing upward, the column member is rotated around the axis of rotation so that the other side surface of the column member faces upward, and another covering material is attached to that other side surface. A method for installing a column covering material as described in claim 1.

3. The aforementioned rotating shaft is a connecting pin that is joined to a structural member. A method for installing a column covering material according to claim 1 or claim 2.

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