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    • 4. 发明公开
    • MÉTHODE DE CONCEPTION D'UNE PLAQUE ONDULÉE ET PLAQUE ONDULÉE OBTENUE
    • MODE DE DE CONCEPTION D'UNE PLAQUEONDULÉEET PLAQUEONDULÉEOBTENUE
    • EP3161222A1
    • 2017-05-03
    • EP15738736.6
    • 2015-06-23
    • Onduline
    • ROHART, Christophe
    • E04D3/34
    • E04D3/24D06M15/17D06M2101/02E04D3/34
    • Method for designing a corrugated roofing sheet (1) made of natural fibres, notably cellulose fibres, impregnated with bitumen comprising a uniform pattern of mutually parallel alternating corrugations borne by a mid-plane (4), said corrugations defining rounded crests (2) each separated from the next by a rounded trough (3), the crests and trough being connected by alternately inclined portions (5, 5'), the transverse offset between two successive crests (2) being equal to the transverse offset between two successive troughs (3) and defining the pitch P of the corrugations, the sheet (1) having a thickness E of material substantially constant over its extent, the sheet having a height H defined as being twice the distance between the mid-plane (4) and the exterior surface of a crest (2) or twice the distance between the mid-plane (4) and the exterior surface of a trough (3), these two distances being identical. The height H, thickness E and pitch P values for the sheet are determined by solving the inequation Fi 3 /(8 x E x (H + P))
    • 用于设计由天然纤维(特别是纤维素纤维)制成的波纹屋顶板(1)的方法,所述天然纤维浸渍有沥青,所述沥青包括由中间平面(4)承载的相互平行的交替波纹的均匀图案,所述波纹分别限定圆形顶部 通过圆形槽(3)与圆形槽(3)分离,波峰和波谷通过交替倾斜部分(5,5')连接,两个连续波峰(2)之间的横向偏移等于两个连续波谷 所述片材(1)具有在其范围内基本上恒定的材料厚度E,所述片材具有高度H,所述高度H被限定为所述中间平面(4)与所述中间平面(4)之间的距离的两倍, (2)的外表面或中间平面(4)与槽(3)的外表面之间的距离的两倍,这两个距离是相同的。 通过求解不等式Fi