JP2551915B2 - Naturally-projected vertical snowfall roof structure - Google Patents

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は屋根雪を効率的に処理す
る屋根構造に関する。FIELD OF THE INVENTION The present invention relates to a roof structure for efficiently treating roof snow.

【０００２】[0002]

【従来の技術】本発明の対象とする屋根構造に関する屋
根雪処理の現状は、屋根面を急勾配にした滑出し落雪に
よる処理、或いは円型屋根による随時滑出し落雪による
処理などの技術が提案されているところであるが、前者
の急勾配のトンガリ構造では、落雪の頻度が高く、その
滑出しが飛出し状況となるため、隣家との空間を多く要
する上、落雪推積の防御対策が必要となるなどの問題点
を内在し、後者の円型屋根構造は学校体育館や大型競技
場などに採用されるもので、一般住宅用としては不適な
ものである。そこで、急勾配面と緩勾配面とを組合わ
せ、かつ軒先部に半円形状筒を配設して積雪滞留防止を
図る屋根構造に関する技術（実開平２−９９１２９号）
が提案されているが、該技術は軒先部における氷の***
を解消することにより屋根材としてのＦＲＰの滑り性と
単に屋根勾配の緩急によって落雪しようとするもので、
滑落エネルギーの有効発生要素や該滑落エネルギーを排
雪エネルギーに変換して断続的に屋根雪を落雪させる断
続落雪要素に関しては技術的に完成していないものであ
る。すなわち、勾配角度の点では、急勾配面の勾配がき
つ過ぎると、極く少量の積雪で滑落し、急勾配面と緩勾
配面との境目に堆積し、緩勾配面ではアンバランスな状
態の積雪層を形成し、雪と屋根面との摩擦係数による自
己滑出によって不規則な落雪を呈し、逆にゆる過ぎると
積雪層が厚くなり過ぎて滑落時の滑落エネルギーが大と
なり、緩勾配面上の積雪の自己滑出に作用し、該積雪と
共に一度に多量の雪を排雪する危険な状態を発現させる
ものである。また、急勾配面においても緩勾配面におい
ても、自己滑出は積雪自重による滑落方向の分力と摩擦
抵抗のバランスが崩れたときに発生するものであるか
ら、屋根幅が同一であれば、各勾配面における積雪自重
を左右する要素は各勾配方向における勾配面の長さであ
り、この長さの比率と各勾配角度の選択が屋根雪の安全
な排雪の要件であり、また、雪塊の滑出中の運動軌跡は
放物線に倣うものであるから滑らかな排雪にはこの点で
も配慮すべきものである。2. Description of the Related Art As for the present state of roof snow treatment for a roof structure to which the present invention is applied, a technique such as treatment by sliding snowfall with a steep roof surface or treatment by sliding roof snowfall with a circular roof is proposed. However, in the former Tongari structure with a steep slope, the frequency of snowfall is high, and the slipping out of the structure causes the snow to jump out, which requires a lot of space with the neighboring house and requires measures to prevent snowfall accumulation. However, the latter circular roof structure is adopted for school gymnasiums and large stadiums, and is not suitable for general housing. Therefore, a technology related to a roof structure that combines a steep slope surface and a gentle slope surface and arranges a semi-circular cylinder at the eaves tip portion to prevent snow accumulation (Actual Kaihei 2-99129)
Is proposed, the technique is to eliminate snow upheaval at the eaves by sliding the FRP as a roofing material and to try to fall snow simply by grading the roof slope.
The effective generation element of the sliding energy and the intermittent snowfall element for converting the sliding energy into snow exhaust energy and intermittently falling the roof snow have not been technically completed. In other words, in terms of the slope angle, if the slope on the steep slope is too tight, it will slip off with a very small amount of snow, and will accumulate at the boundary between the steep slope and the gentle slope, and the unbalanced state on the gentle slope. It forms a snow layer and exhibits irregular snowfall due to self-sliding due to the coefficient of friction between the snow and the roof surface. Conversely, if it is too loose, the snow layer becomes too thick and the sliding energy at the time of sliding becomes large, resulting in a gentle slope surface. It acts on the self-sliding of the upper snow and causes a dangerous state of discharging a large amount of snow at once together with the snow. Also, on both steep and gently sloping surfaces, self-sliding occurs when the balance between the component force in the sliding direction and the frictional resistance due to the snow's own weight collapses, so if the roof width is the same, The factor that influences the snow load on each slope is the length of the slope in each slope direction, and the ratio of this length and the selection of each slope angle are the requirements for safe snow removal of the roof snow. Since the locus of movement of the lump while sliding out follows a parabola, smooth snow removal should also be considered in this respect.

【０００３】[0003]

【発明が解決しようとする課題】本発明は上記従来技術
に鑑み、屋根雪の滑落エネルギーを一度に屋根上から放
散しないで、排雪エネルギーに利用し、少量ずつ断続的
に屋根雪を落雪できる屋根構造を提供するものである。SUMMARY OF THE INVENTION In view of the above-mentioned prior art, the present invention utilizes the snow sliding energy from the roof at once without utilizing it for snow discharge energy, and can intermittently drop the roof snow little by little. It provides a roof structure.

【０００４】[0004]

【課題を解決するための手段】本発明の自然推出垂直落
雪屋根構造は、屋根面が棟から軒先に向けて急勾配とす
る上段勾配面と、該上段勾配面に連続して軒先に至る緩
勾配の下段勾配面と、該下段勾配面の軒先部に連続して
配設する所定の曲面とから成る屋根構造において、上段
勾配面を１０寸勾配とし、下段勾配面を２寸勾配から３
寸勾配までの屋根勾配とし、上段勾配面と下段勾配面の
勾配方向の長さの比を０．９対１とし、軒先部に配設す
る曲面が放物線による曲面から成るものである。In the naturally propelled vertical snowfall roof structure of the present invention, the roof surface has a steep slope from the ridge toward the eaves .
The upper sloping surface and the gradual slope leading to the eaves in succession to the upper sloping surface.
Continuing on the lower slope of the slope and the eaves of the lower slope
In a roof structure consisting of a predetermined curved surface to be placed, the upper stage
The slope surface is 10 inch slope, and the lower slope surface is 2 inch slope to 3
The roof slope is up to a slight slope, and the upper slope surface and the lower slope surface
The length ratio in the gradient direction is set to 0.9: 1, and it is installed at the eaves
The curved surface is a parabolic curved surface .

【０００５】[0005]

【作用】上段勾配面での屋根雪が１０寸勾配により、所
定の滑落エネルギーを有して下段勾配面上の屋根雪に作
用し、滑落量と下段勾配面上の積雪量が略同等であるか
ら、排雪エネルギーに変換され、下段勾配面上の屋根雪
に自己滑出を促して断続的に堆出させ、軒先の放物線に
よる曲面に倣って少量ずつ垂直に落雪させ、両屋根雪は
屋根上から自然に除雪される。[Action] by the roof snow 10 cun gradient of in the upper gradient surface, place
Does it have a certain sliding energy and acts on the roof snow on the lower slope, and whether the amount of slip and the amount of snow on the lower slope are approximately equal?
Et al., Is converted to snow removing energy roof snow on the lower inclined face
To encourage self-sliding and intermittently deposit it to form a parabola at the eaves
The snow on both roofs will be naturally removed from the roof , <br /> according to the curved surface .

【０００６】[0006]

【実施例】本発明を実施例により説明すると、図１に示
すように屋根面が棟から軒先に向けて１０寸勾配の（矩
勾配）の上段勾配面１と、該上段勾配面１に連続する３
寸勾配の下段勾配面２と、該下段勾配面２に連続して軒
先を形成する放物線による曲面３とから成り、上段勾配
面１と下段勾配面２との勾配方向の長さの比を０．９対
１として成るものである。EXAMPLES The present invention will be described with reference to Examples. As shown in FIG. 1, the roof surface has a slope of 10 inches from the ridge to the eaves (rectangle
An upper slope face 1 gradient), continuous in the upper stage inclined face 1 3
The upper slope is composed of a lower slope surface 2 having an inclining slope and a curved surface 3 of a parabola which continuously forms an eave tip on the lower slope surface 2.
The ratio of the length in the gradient direction between the surface 1 and the lower slope surface 2 is 0.9
It is configured as 1 .

【０００７】このようにして成る自然推出垂直落雪屋根
構造ａ（以下、単に落雪屋根構造ａとする。）は、降雪
により一定量の積雪になると、先ず１０寸勾配の上段勾
配面１の屋根雪が所定の滑落エネルギーを有して滑落す
るが、このときの滑落量が下段勾配面２の積雪量と略同
等であるため排雪エネルギーに変換され、下段勾配面２
の屋根雪を押出すとともに、該屋根雪に動摩擦を誘発
し、下段勾配面２での自己滑出力を助長して屋根雪は徐
々に移動し、断続的に少量ずつ軒先の曲面３から垂直に
排雪されるものである。The naturally propelled vertical snowfall roof structure a (hereinafter, simply referred to as the snowfall roof structure a) constructed as described above, when a certain amount of snow is accumulated due to snowfall, firstly, the upper slope gradient of the 10-inch slope is obtained.
Roof snow on surface 1 slides down with a certain amount of sliding energy.
However , the amount of sliding at this time is almost the same as the amount of snow on the lower slope 2
Therefore, it is converted to snow removal energy and the lower slope 2
The roof snow is pushed out, dynamic friction is induced in the roof snow, the self-sliding output on the lower graded surface 2 is promoted, and the roof snow gradually moves, and intermittently little by little from the curved surface 3 at the front of the eaves. it is intended to be snow.

【０００８】このように本発明の落雪屋根構造ａによる
自然落雪は、急激、突発的、大量的なものでなく、終始
均一的、少量的であるから、軒下での排雪作業も軽微な
上に安全であり、しかも、垂直落雪であるから狭い間隔
で隣接する家屋にも危険を及ぼすことがなく、一般住宅
向きの屋根雪処理を実現するものである。なお、金属屋
根板の下面全面に比熱の小さいグラスウールなどの保温
材を敷設すれば、夜間の降雪時にも積雪と屋根面との接
触温度を昼間と略同一に保持できるから、摩擦係数を略
一定に確保でき、昼夜を問わず断続的に自然落雪を行う
ことができる。したがって、凍結する余裕を与えず、氷
柱も発生しない。As described above, the natural snowfall by the snowfall roof structure a of the present invention is not sudden, sudden, or large, and is uniform and small from beginning to end. Therefore, the snow removal work under the eaves is also light. It is very safe, and because it is vertical snowfall, it does not pose a risk to adjacent houses at narrow intervals and realizes roof snow treatment for general houses. If a heat insulating material such as glass wool with a low specific heat is laid on the entire lower surface of the metal roof plate, the contact temperature between snow and the roof surface can be kept almost the same during the snowfall at night, so the friction coefficient is almost constant. It is possible to ensure natural snowfall intermittently day and night. Therefore, there is no room for freezing and no icicles are generated.

【０００９】[0009]

【発明の効果】以上のように、本発明の落雪屋根構造ａ
によれば、一定の積雪状態になると、上段勾配面より滑
落エネルギーが発現し、該エネルギーが下段勾配面上の
屋根雪に有効な排雪エネルギーとして変換され、該屋根
雪を移動し、少量的に且つ、断続的に軒先の放物曲面か
ら垂直に落雪するものであり、氷柱を生ずることもな
く、軒下での排雪作業も安全軽微なものとなり、しかも
隣家に被害を及ぼす心配もないなど、積雪寒冷地での一
般住宅用の屋根雪処理には、極めて省力的に且つ経済的
に貢献するものである。As described above, the snowfall roof structure a of the present invention
According to the report, when a certain amount of snow is reached , slippage from the upper slope will occur.
The falling energy appears , and the energy is on the lower slope surface.
Converted as effective snow removing energy roof snow, the roof
Move the snow, small amounts manner and is intended to falling snow on parabolic curved or <br/> et vertical Intermittent to eaves, without giving rise to icicle, it is safe minor snow removing working with eaves In addition, since it does not cause damage to the neighboring house, it is extremely labor-saving and economically contributes to roof snow treatment for general houses in snowy cold regions.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明に係る自然推出垂直落雪屋根構造ａの概
略斜視図である。FIG. 1 is a schematic perspective view of a naturally propelled vertical snowfall roof structure a according to the present invention.

【符号の説明】[Explanation of symbols]

１ 上段勾配面 ２ 下段勾配面 ３ 曲面 ａ 自然推出垂直落雪屋根構造 1 Upper graded surface 2 Lower graded surface 3 Curved surface a Naturally extracted vertical snowfall roof structure

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 屋根面が棟から軒先に向けて急勾配とす
る上段勾配面と、該上段勾配面に連続して軒先に至る緩
勾配の下段勾配面と、該下段勾配面の軒先部に連続して
配設する所定の曲面とから成る屋根構造において、上段
勾配面を１０寸勾配とし、下段勾配面を２寸勾配から３
寸勾配までの屋根勾配とし、上段勾配面と下段勾配面の
勾配方向の長さの比を０．９対１とし、軒先部に配設す
る曲面が放物線による曲面から成る自然推出垂直落雪屋
根構造。1. The roof surface has a steep slope from the ridge toward the eaves .
The upper sloping surface and the gradual slope leading to the eaves in succession to the upper sloping surface.
Continuing on the lower slope of the slope and the eaves of the lower slope
In a roof structure consisting of a predetermined curved surface to be placed, the upper stage
The slope surface is 10 inch slope, and the lower slope surface is 2 inch slope to 3
The roof slope is up to a slight slope, and the upper slope surface and the lower slope surface
The length ratio in the gradient direction is set to 0.9: 1, and it is installed at the eaves
Naturally propelled vertical snowfall roof structure in which the curved surface is a parabolic curved surface .