JP2018035624A - Wooded building construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a wide interior space by setting a ceiling at a higher position or lowering a roof with the same ceiling height while bond timber can be omitted.SOLUTION: A ceiling plate 140 is fitted to a lower chord 154 of a roof unit 150, and no bond timber is provided. Employing a truss roof structure enables force applied to beams 100, 102, 104 to be dispersed toward an upper chord 152 through an oblique web material 158, and the strength of the building is thereby improved so as to prevent a decrease in strength which may be caused as no bond timber is provided. Eliminating the need for the bond timer between beams enables the ceiling plate 140 to be fitted to the lower chord 154 of the roof unit 150, and the ceiling is made higher so as to obtain a wide interior space.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wooden building structure, and more particularly to an improvement in the structure of a roof and a ceiling.

  In a wooden building, a fire beam (hereinafter simply referred to as “fire-fire”) is provided in order to prevent deformation of the building due to a horizontal force caused by an earthquake or the like. The strength of the building is improved by dispersing the horizontal force applied to the beams provided in the horizontal direction with fire.

  Usually, the fire is hidden by a ceiling board, like a beam or a hanging bundle, so that the fire is not directly visible from the room side.

  FIG. 4 shows an example thereof. The beams 10, 12, and 14 are provided substantially in parallel, and the beams 16, 18,. These beams 10-18, ... are supported by pillars 20, 22, 24, 26, .... Fire struts 30 are diagonally provided inside the corners of the beams 10 and 16, and fire strikes 32 are obliquely provided inside the corners of the beams 14 and 16. In the beams 16, 18,..., A plurality of bundles 54 are provided in the vertical direction at appropriate intervals. At the upper end of the bundle 54, a purlin 55 and a purlin 56 are provided in the direction of the beams 10, 12, and 14. A large number of rafters 60 are provided at appropriate intervals in a direction orthogonal to the purlin 55 and the purlin 56. By making the bundle 54 have a length that decreases sequentially from the center toward the beams 10 and 14 at both ends, a gradient is generated in the rafter 60, which becomes a gradient of the roof.

  A base plate (not shown) is provided on the rafter 60. In addition, a ceiling plate is provided below the beams 16, 18,. As a result, the parts behind the ceiling such as the fire striking 30, 32, the bundle 54, the purlin 55, the purlin 56, and the like are hidden from the room side.

  As in the background art described above, if the structure is such that the fire striking 30, 32 is concealed by the ceiling board, the height of the ceiling will be below the beams 16, 18,.

  On the other hand, for example, in Patent Document 1 below, an open room with a high ceiling, in which a ceiling is provided on the upper side of the firework and the firework is made to protrude from the inner wall so that the space that has become the back of the ceiling is also taken in. A structure is disclosed.

JP-A-11-117434

  However, the above-described background art has a structure in which the back of the ceiling, in which the field plate is also used as the ceiling plate, is exposed, and the fire is exposed as it is, which is not necessarily preferable.

  The present invention pays attention to the points as described above, and its purpose is to omit the firing and raise the position of the ceiling, or to lower the roof if the ceiling height is the same. Another object is to obtain a large indoor space.

  The present invention is a wooden building structure in which a roof is provided on a beam supported by a pillar, and the roof unit supporting the roof is a truss structure including an upper chord material, a web material, and a lower chord material, It is characterized by omitting the burning between the beams and providing a ceiling on the lower chord material.

  Still another invention is a wooden building structure in which a roof is provided on a beam supported by a pillar, and the roof unit supporting the roof is a truss structure including an upper chord material, a web material, and a lower chord material, The truss structure and the field plate ensure the necessary strength, thereby eliminating the fire between the beams and providing a ceiling on the lower chord material.

  One of the main forms is characterized in that a two-by material is used as the upper chord member, the web member, and the lower chord member of the roof unit. The above and other objects, features and advantages of the present invention will become apparent from the following detailed description and the accompanying drawings.

  According to the present invention, since the roof has a truss structure, the necessary strength can be obtained, so that it is possible to omit fire-fighting. Can be lowered.

It is a principal perspective view which shows the building structure of Example 1 of this invention. It is a figure which compares and shows the relationship of the height of the ceiling and roof in the said Example 1 and background art. It is a principal perspective view which shows the building structure of Example 2 of this invention. It is a perspective view which shows an example of the conventional building structure.

  Hereinafter, the form for implementing this invention is demonstrated in detail based on an Example.

  First, Embodiment 1 of the present invention will be described with reference to FIG. In the drawing, beams 102 and 104 are provided in parallel to each other perpendicular to the beam 100, and these beams 100, 102, and 104 are supported by columns 106, 108, and 110. In addition, there are other beams and columns not shown. On the beams 100, 102, and 104, a plurality of roof units 150 are provided in parallel at appropriate intervals. The roof unit 150 has a truss structure (double howtruss), and includes an upper chord material 152, a lower chord material 154, and web materials 156 and 158 that support them. A web material 158 is provided obliquely between the web materials 156, thereby forming a truss. The upper chord member 152, the lower chord member 154, the web members 156 and 158 are joined by, for example, a nail plate. Although the eaves are not shown, they are provided as necessary.

  A large number of the above-described roof units 150 are arranged between the beams 102 and 104 at an appropriate interval. Then, the ceiling board 140 is attached to the lower chord material 154 of the roof unit 150. That is, the ceiling is provided on the upper end side of the beams 100, 102, and 104. On the other hand, the length of the web material 156 is gradually reduced from the center toward both ends, so that the upper chord material 152 is inclined. A base plate 142 is provided on the upper chord material 152.

  By the way, according to the present embodiment, as described above, the ceiling board 140 is attached to the lower chord member 154 of the roof unit 150, and no fire is provided as in the background art. However, the strength reduction due to the absence of fire is compensated for by using a truss roof structure. That is, with the truss roof structure, the horizontal force applied to the beams 100, 102, and 104 can be dispersed in the direction of the upper chord material 152 through the oblique web material 158, and further, the upper chord material 152 and the base plate 142 In this direction, the force is distributed, and sufficient strength against horizontal force can be obtained.

  As described above, according to the present embodiment, by using the truss roof structure, it is possible to eliminate burning between the beams. For this reason, the ceiling board 140 can be attached to the lower chord material 154 of the roof unit 150, and the ceiling can be raised to obtain a wide indoor space. FIG. 2 shows the situation, (A) is the case of the above embodiment, and (B) is the case of the background art. If the height of the roof is the same, the ceiling of the present embodiment is higher by the height H. FIGS. 4C and 4D show the case where the height of the ceiling is the same, and the roof of the embodiment (C) can be lowered by H.

  Next, a second embodiment of the present invention will be described. Example 2 is an example in which the truss structure of the roof unit has another configuration (fink truss), and the roof unit 170 is configured by an upper chord member 172, a lower chord member 174, and web members 176 and 178 therebetween. Has been. In other words, the upper chord member 172 and the lower chord member 174 are formed in a triangular shape as a whole, and a plurality of web members 176 and 178 are obliquely provided between them, thereby applying a load applied to the upper chord member 172 in the vertical direction and the horizontal direction. It is structured to be dispersed.

In addition, this invention is not limited to the Example mentioned above, A various change can be added in the range which does not deviate from the summary of this invention. For example, the following are also included.
(1) There are various types of roof structures, such as gables, dormitories, and single flows, but the present invention is applicable to any type.
(2) As the truss structure of the roof unit, various types are known in addition to the above-described double-how truss and fink truss, and any of them may be applied.
(3) In the above embodiment, the roof is assembled by combining the roof units in parallel, but various known assembly methods may be used.
(4) As wood such as upper chord material, web material, lower chord material and field board, various known materials such as SPF and white wood may be used. Further, as a size, a two-by material may be used.
(5) In the above embodiment, the fire striking is omitted by the truss structure, but the fire striking is omitted by ensuring the necessary strength by the truss structure and the field board, and the lower chord material is provided with a ceiling. Good.

  According to the present invention, since the roof has a truss structure to improve the strength, it is possible to omit the fire-fighting and to raise the ceiling position or to lower the roof if the ceiling height is the same. It can be applied to all wooden buildings.

10, 12, 14, 16, 18, ...: Beams 20, 22, 24, 26, ...: Pillars 30, 32: Fire-fired 54: Bundle 55: Purlin 56: Purlin 60: Rafters 100, 102, 104 : Beam 106, 108, 110: Column 140: Ceiling board 142: Field board 150: Roof unit 152: Upper chord material 154: Lower chord material 156, 158: Web material 170: Roof unit 172: Upper chord material 174: Lower chord material 176, 178 : Web material

Claims (3)

A wooden building structure in which a roof is provided on a beam supported by a pillar,
The roof unit that supports the roof has a truss structure including an upper chord member, a web member, and a lower chord member, so that the flame between the beams is omitted and a ceiling is provided on the lower chord member. Building structure. A wooden building structure in which a roof is provided on a beam supported by a pillar,
The roof unit that supports the roof is a truss structure including upper chord material, web material, and lower chord material, and by securing the necessary strength by this truss structure and the field plate, the firing between the beams is omitted, A wooden building structure characterized in that a ceiling is provided on the lower chord material.   The wooden building structure according to claim 1 or 2, wherein a two-by material is used as an upper chord member, a web member, and a lower chord member of the roof unit.

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