Roof structure
The roof structure employs an intermediate inclined support to manage thrust forces, reducing the need for additional support structures and maintaining an open design by using inclined supports to resist horizontal thrust, thus minimizing costs and labor.
Patent Information
- Application Number
- JP2021016493
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-02-04
- Publication Date
- 2025-05-21
- Estimated Expiration
- 2041-02-04
AI Technical Summary
Existing roof structures with sloped roofs supported by flat side support parts face challenges in maintaining an open feel while managing thrust forces, leading to increased costs and labor due to the need for sturdy earthquake-resistant walls or lower chord connections.
A roof structure with an intermediate inclined support part that extends from a flat-side base towards the ridge, supporting the eaves of sloped roofs, reducing the need for additional thrust support means like lower chords or sturdy walls, and allowing for open spaces by utilizing the space between flat-side and inclined supports.
This configuration reduces costs and labor by minimizing the need for additional thrust support structures, while maintaining an open and designable space by using the intermediate inclined support to resist horizontal thrust forces, allowing for openings and partitions.
Smart Images
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Abstract
Description
[Technical field]
[0001] The present invention relates to a roof structure comprising a sloped roof having a downward slope from the ridge to the eaves, and a flat side support portion erected on a flat side base to support the eaves portion of the sloped roof. [Background technology]
[0002] In roof structures having a sloped roof whose eaves are supported by flat supporting parts such as pillars and walls, thrust acts along the downward slope of the sloped roof, so it is necessary to provide a thrust support means for supporting the horizontal component (see, for example, Patent Document 1). As shown in Figure 4, in the past, in a gable roof structure in which sloped roofs 10A, 10B are provided on both sides of a ridge 61, known thrust support means for supporting the thrust acting from sloped roofs 10A, 10B include connecting eaves portions 63A, 63B of sloped roofs 10A, 10B on both sides with lower chord members such as tie rods or rafters, or making flat side support portions 67A, 67B supporting eaves portions 63A, 63B of sloped roofs 10A, 10B into sturdy earthquake-resistant walls that can adequately resist the horizontal component of thrust. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2016-125309 A Summary of the Invention [Problem to be solved by the invention]
[0004] As mentioned above, when the eaves of the sloped roof are connected by a lower chord as a thrust support means, the presence of the lower chord causes a problem that the open feeling on the ceiling side of the room is lost. On the other hand, when the flat side support part is made of a sturdy earthquake-resistant wall as a thrust support means, the cost and labor of the earthquake-resistant wall increase, and the presence of a heavy earthquake-resistant wall on the flat side may impair the design, making it difficult to achieve a sense of openness by providing an opening in the flat side support part, for example. In view of this situation, the main objective of the present invention is to provide a technology that can provide a highly designable and open feeling while adopting a rational configuration that can reduce costs and labor when providing a thrust support means to support the thrust acting from a sloped roof in a roof structure having a sloped roof whose eaves are supported by flat side support parts. [Means for solving the problem]
[0005] The first characteristic configuration of the present invention is a sloped roof having a downward slope from a ridge portion to an eaves portion, A flat side support part is provided on the flat side base part to support the eaves part of the sloped roof; A roof structure comprising: a thrust support means for supporting a thrust acting from the sloped roof, The thrust support means includes an intermediate inclined support part that is erected on an inner base part spaced apart from the flat-side base part toward the ridge part and extends in an inclined direction approaching the ridge part as it goes upward, thereby supporting an intermediate position between the eaves part and the ridge part of the sloped roof, The sloped roof is provided on both sides of the ridge portion, The eaves of the sloped roof provided on both sides of the ridge are supported by flat-side supports erected on flat-side bases constructed on the ground, The intermediate inclined support portion is provided on at least one side of the sloped roof on both sides as the thrust support means separate from the flat side support portion. And, The sloped roofs provided on both sides of the ridge include a large span sloped roof and a small span sloped roof having a length from the ridge to the eaves shorter than that of the large span sloped roof, The intermediate inclined support portion is provided only for the large span sloped roof of the large span sloped roof and the small span sloped roof. The point is that
[0006] According to this configuration, the intermediate inclined support portion provided as the thrust support means is configured to extend in the inclination direction approaching the ridge portion as it goes up, thereby supporting the intermediate position of the sloped roof. Then, the horizontal component of the force acting at the intermediate position of the sloped roof along the inclination direction of the intermediate inclined support portion resists the horizontal component of the thrust acting along the downward slope of the sloped roof. Thus, the thrust acting on the flat-side support portion from the sloped roof can be reduced. This makes it possible to omit or simplify the above-mentioned thrust support means other than the intermediate inclined support portion, such as connecting the eaves portions of the sloped roof with a lower chord member or constructing the flat-side support portion from a sturdy earthquake-resistant wall. Furthermore, since the inner base portion on which the intermediate inclined support portion is erected is provided at a position spaced inward from the flat-side base portion on which the flat-side support portion is erected, the space between the flat-side support portion and the intermediate inclined support portion can be effectively used as a room or passageway, For example, an opening can be provided in the flat support portion to give the space a more open feel. Therefore, the present invention makes it possible to provide a technology that can adopt a rational configuration that can reduce costs and labor when providing thrust support means to support the thrust acting from a sloped roof in a roof structure having a sloped roof whose eaves portion is supported by a flat side support portion, while providing a technology that provides a highly designed and open feeling. Furthermore, according to this configuration, for each of the sloped roofs on either side of the ridge, where the thrust acting on the flat support portion needs to be reduced, an intermediate inclined support portion can be provided to resist the horizontal component of the thrust. The second characteristic configuration of the present invention is as follows: A sloped roof having a downward slope from the ridge to the eaves; A flat side support part is provided on the flat side base part to support the eaves part of the sloped roof; A roof structure comprising: a thrust support means for supporting a thrust acting from the sloped roof, The thrust support means includes an intermediate inclined support part that is erected on an inner base part spaced apart from the flat-side base part toward the ridge part and extends in an inclined direction approaching the ridge part as it goes upward, thereby supporting an intermediate position between the eaves part and the ridge part of the sloped roof, The sloped roof is provided on both sides of the ridge portion, The eaves of the sloped roof provided on both sides of the ridge are supported by flat-side supports erected on flat-side bases constructed on the ground, The intermediate inclined support portion is provided on at least one side of the sloped roof on both sides as the thrust support means separate from the flat side support portion, The intermediate inclined support portion is configured as a partition that separates an outer space between the intermediate inclined support portion and the flat support portion from an inner space on the opposite side. According to this configuration, the intermediate inclined support portion provided as the thrust support means is configured to extend in the inclination direction approaching the ridge portion as it goes up, thereby supporting the intermediate position of the sloped roof. Then, the horizontal component of the force acting at the intermediate position of the sloped roof along the inclination direction of the intermediate inclined support portion resists the horizontal component of the thrust acting along the downward slope of the sloped roof. Thus, the thrust acting on the flat-side support portion from the sloped roof can be reduced. This makes it possible to omit or simplify the above-mentioned thrust support means other than the intermediate inclined support portion, such as connecting the eaves portions of the sloped roof with a lower chord member or constructing the flat-side support portion from a sturdy earthquake-resistant wall. Furthermore, since the inner base portion on which the intermediate inclined support portion is erected is provided at a position spaced inward from the flat-side base portion on which the flat-side support portion is erected, the space between the flat-side support portion and the intermediate inclined support portion can be effectively used as a room or passageway, For example, an opening can be provided in the flat support portion to give the space a more open feel. Therefore, the present invention makes it possible to provide a technology that can adopt a rational configuration that can reduce costs and labor when providing thrust support means to support the thrust acting from a sloped roof in a roof structure having a sloped roof whose eaves portion is supported by a flat side support portion, while providing a technology that provides a highly designed and open feeling. Furthermore, according to this configuration, for each of the sloped roofs on either side of the ridge, where the thrust acting on the flat support portion needs to be reduced, an intermediate inclined support portion can be provided to resist the horizontal component of the thrust. Furthermore, according to this configuration, the intermediate inclined support part can be effectively used as a partition that separates the outer space and the inner space that are sandwiched therebetween. When using the intermediate inclined support part as a partition, a wall material can be attached to the plurality of inclined columns arranged side by side as described above, but such inclined columns can also be omitted and the wall body itself that functions as a partition can function as the intermediate inclined support part.
[0009] A third characteristic configuration of the present invention is that the intermediate inclined support portion is composed of a plurality of inclined columns inclined along the slope of the sloped roof, arranged side by side along the extension direction of the ridge portion.
[0010] According to this configuration, the intermediate inclined support part can be formed of a plurality of inclined columns arranged in parallel along the extension direction of the ridge part. Each of the plurality of inclined columns can be arranged in parallel along the extension direction of the ridge part at intervals from each other, with its upper end connected to the middle position of each of the plurality of ascending beams arranged in parallel along the extension direction of the ridge part. When the intermediate inclined support part is formed in such a manner that a plurality of inclined columns are arranged in parallel, the continuity of both spaces sandwiching the intermediate inclined support part can be ensured by opening the space between the adjacent inclined columns, thereby providing a sense of openness. [Brief description of the drawings]
[0013] [Figure 1] Plan view of the roof structure according to the present embodiment [Diagram 2] Cross section AA in Figure 1 [Diagram 3] Cross section B-B in Fig. 1 [Figure 4] Schematic elevation of a conventional roof structure seen from the gable side DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The roof structure 50 of this embodiment (hereinafter referred to as "this roof structure") shown in Figures 1 to 3 is configured as a gable roof structure with sloped roofs 10A, 10B on both sides of a ridge 11. Each sloped roof 10A, 10B is configured to have a downward slope from the same ridge 11 to eaves 13A, 13B on both sides, and as shown in Figure 1, multiple ascending beams 12A, 12B are arranged in parallel along the extension direction X of the ridge 11 (so-called girder direction), and roof members 15 such as sheathing boards and roof finishing materials are laid on top of them. The eaves 13A, 13B of the respective sloped roofs 10A, 10B are supported by flat-side supports 17A, 17B made of pillars, walls, etc. erected on flat-side bases 18A, 18B such as foundations built on the ground.
[0015] In this roof structure 50, the sloped roofs 10A, 10B have different lengths from the ridge 11 to the eaves 13A, 13B (hereinafter referred to as "roof length"). Hereinafter, the one with the longer roof length may be referred to as the large span sloped roof 10A, and the one with the shorter roof length may be referred to as the small span sloped roof 10B.
[0016] In the present roof structure 50 having the sloped roofs 10A, 10B, thrust acting along the downward slope of the sloped roofs 10A, 10B occurs, so thrust support means are provided for supporting the horizontal component of the thrust. In the small span sloped roof 10B, since the thrust generated is relatively small, the flat side support portion 17B supporting the eaves portion 13B of the sloped roof 10B is configured to also function as a thrust support means for supporting the horizontal component of the thrust.
[0017] On the other hand, in the case of the large span sloped roof 10A, since the thrust generated is relatively large, the thrust is not supported only by the flat side support part 17A that supports the eaves portion 13A of the sloped roof 10A, but a thrust support means separate from this flat side support part 17A is provided, the details of which are explained below.
[0018] 2 and 3, in the long span sloped roof 10A, an intermediate slope support part 20 is provided as a thrust support means for supporting the thrust generated in the sloped roof 10A, which supports an intermediate position P between the eaves part 13A and the ridge part 11 of the sloped roof 10A. The intermediate slope support part 20 is erected on the intermediate slope support part 20 disposed on the ridge part 11 side with respect to the flat-side base part 18A, in an orientation extending in the slope direction K that approaches the ridge part 11 side as it goes upward.
[0019] That is, the intermediate inclined support part 20 provided as a thrust support means for supporting the thrust generated in the sloped roof 10A is configured to extend in the inclination direction K, which approaches the ridge part 11 as it goes upward, to support the intermediate position P of the sloped roof 10A. Then, the horizontal component of the force acting on the intermediate position P of the sloped roof 10A along the inclination direction K of the intermediate inclined support part 20 resists the horizontal component of the thrust acting along the downward slope of the sloped roof 10A. Therefore, the thrust acting on the flat side support part 17A is reduced. As a result, thrust support means other than the intermediate inclined support part 20, such as connecting the eaves parts 13A, 13B of the sloped roofs 10A, 10B with a lower chord member, or constructing the flat side support part 17A supporting the eaves part 13A of the sloped roof 10A with a sturdy earthquake-resistant wall, are omitted. In this embodiment, the thrust support means other than the intermediate inclined support part 20 is omitted, but a simplified one may be added as necessary.
[0020] The inner base 22 of the foundation or the like on which the intermediate inclined support 20 is erected is provided at a position spaced inward from the flat-side base 18A on which the flat-side support 17A is erected, and the outer space 30 between the flat-side support 17A and the intermediate inclined support 20 is effectively used as a room or passageway. Furthermore, since the thrust generated in the sloped roof 10A is hardly exerted on the flat-side support 17A, a relatively large opening (not shown) is appropriately formed in the flat-side support 17A, and this opening gives the outer space 30 a feeling of openness. Furthermore, such an intermediate inclined support portion 20 can be appropriately used as a partition that separates an outer space 30 formed between the intermediate inclined support portion 20 and the flat-side support portion 17A from an inner space 31 formed on the opposite side thereof.
[0021] The intermediate inclined support section 20 is configured by arranging a plurality of inclined columns 21, which are inclined along the gradient of the sloped roof 10A as shown in Figures 2 and 3, side by side along the extension direction X of the ridge section 11 as shown in Figure 1. That is, the plurality of inclined columns 21 arranged side by side along the extension direction X of the ridge section 11 are arranged at intervals from each other along the extension direction X of the ridge section 11 in a form in which the upper end of each of the inclined columns 21 is connected to the intermediate position P of each of the plurality of climbing beams 12A arranged side by side along the extension direction X of the ridge section 11. Furthermore, the space between adjacent inclined columns 21 is open, which ensures the continuity of the two spaces 30, 31 that sandwich the inclined column 21, creating a sense of openness. Note that it is also possible to adopt a configuration in which the space between adjacent inclined columns 21 is not opened, but is closed with a wall material or the like.
[0022] In each of the ascending beams 12A, the intermediate position P to which the upper end of the inclined column 21 is connected may be the same position, but may be different positions as shown in Figs. 1 to 3. For example, in this embodiment, the intermediate position P to which the upper end of the inclined column 21 is connected gradually changes from a position closer to the ridge 11 to a position closer to the eaves 13A from one gable side (right side in Fig. 1) to the other gable side (left side in Fig. 1). This allows the installation position of the inclined column 21 to be changed appropriately in consideration of design and rationality. In this embodiment, the inclination directions K of each of the inclined columns 21 are approximately the same, but they may be made different by gradually changing each inclination direction K.
[0023] In addition, in this roof structure 50, the purlins 14 are provided in a form that connects the upper ends of the adjacent inclined columns 21, in other words, in a form that spans the connection points of the inclined columns 21 in the adjacent ascending beams 12A. Note that the installation location of the purlins can be changed as appropriate.
[0024] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.
[0025] (1) In the above embodiment, the roof structure 50 is configured as a gable roof structure with sloped roofs 10A, 10B on either side of the ridge 11, but the present invention can be applied to a roof structure having at least one sloped roof, such as a hip roof or a gable roof. In the above embodiment, the roof lengths of the two sloped roofs 10A, 10B constituting the roof structure 50 are different, but they may be the same roof length.
[0026] (2) In the above embodiment, an intermediate inclined support portion 20 functioning as a thrust support means is provided only on the large span inclined roof 10A on one side of the two inclined roofs 10A, 10B, and no intermediate inclined support portion is provided on the small span inclined roof 10B on the other side, but an intermediate inclined support portion may also be provided on the small span inclined roof 10B.
[0027] (3) In the above embodiment, the intermediate inclined support portion 20 is composed of a plurality of inclined pillars 21 arranged side by side along the extension direction X of the ridge portion 11. However, for example, it may be configured to support an intermediate position P in the sloped roof 10A by a wall body extending in the inclination direction K and the extension direction X, which is erected on an inner base 22 spaced apart from the flat-side base 18A on the ridge portion 11 side. [Explanation of symbols]
[0028] 10A Sloped Roof 10B Sloped roof 11 Munebu 13A Eaves 13B Eaves 17A Flat side support part 17B Flat side support part 18A flat side base 18B flat side base 20 Intermediate slope support 21 Slanted column 22 Medial base 30 Outside space 31 Inner Space 50 Roof structure K Tilt direction P intermediate position X extends in the direction
Claims
1. A sloped roof having a downward slope from the ridge to the eaves; A flat side support part is provided on the flat side base part to support the eaves part of the sloped roof; A roof structure comprising: a thrust support means for supporting a thrust acting from the sloped roof, The thrust support means includes an intermediate inclined support part that is erected on an inner base part spaced apart from the flat-side base part toward the ridge part and extends in an inclined direction approaching the ridge part as it goes upward, thereby supporting an intermediate position between the eaves part and the ridge part of the sloped roof, The sloped roof is provided on both sides of the ridge portion, The eaves of the sloped roof provided on both sides of the ridge are supported by flat-side supports erected on flat-side bases constructed on the ground, The intermediate inclined support portion is provided on at least one side of the sloped roof on both sides as the thrust support means separate from the flat side support portion, The sloped roofs provided on both sides of the ridge portion include a large span sloped roof and a small span sloped roof having a length from the ridge portion to the eaves portion shorter than that of the large span sloped roof, A roof structure in which the intermediate inclined support portion is provided only for the large span sloped roof out of the large span sloped roof and the small span sloped roof.
2. A sloped roof having a downward slope from the ridge to the eaves; A flat side support part is provided on the flat side base part to support the eaves part of the sloped roof; A roof structure comprising: a thrust support means for supporting a thrust acting from the sloped roof, The thrust support means includes an intermediate inclined support part that is erected on an inner base part spaced apart from the flat-side base part toward the ridge part and extends in an inclined direction approaching the ridge part as it goes upward, thereby supporting an intermediate position between the eaves part and the ridge part of the sloped roof, The sloped roof is provided on both sides of the ridge portion, The eaves of the sloped roof provided on both sides of the ridge are supported by flat-side supports erected on flat-side bases constructed on the ground, The intermediate inclined support portion is provided on at least one side of the sloped roof on both sides as the thrust support means separate from the flat side support portion, A roof structure in which the intermediate inclined support portion is configured as a partition that separates an outer space between the intermediate inclined support portion and the flat support portion from an inner space on the opposite side.
3. 3. The roof structure according to claim 1, wherein the intermediate inclined support portion is configured by arranging a plurality of inclined columns inclined along the slope of the sloped roof in parallel along the extension direction of the ridge portion.
Citation Information
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