A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WINDBREAK SNOW FENCE
PROBLEM TO BE SOLVED: To provide an inexpensive windbreak snow fence that relieves a snowdrift caused on the leeward side, has high effect of lessening wind speed, and is capable of securing visibility.SOLUTION: A lower stage from a height of about 2/3 of a fence height is formed as an unperforated plate 10, and a windbreak snow plate of upper-lower stages 20 at a height of about 2/3 to about 5/6 of the height of the fence height is composed of swelling parts being line symmetry in a shape of a vertical cross section. One of the swelling parts has an inclined plane whose an upper part is inclined toward upwind, and a large number of through-holes are provided in the inclined plane. The opposite side of the swelling part is formed as an unperforated hole, and a hole opening ratio of the whole upper-lower stages 20 is set to about 20%. A windbreak snow plate of the upper-upper stage 30 up to an upper end from a height of about 5/6 of the fence height comprises the swelling parts being line symmetry in the shape of the vertical cross section, and one of the swelling parts has an inclined plane whose upper part is inclined toward the upwind. A large number of large through-holes are provided in the inclined plane, and small through-holes are provided on the opposite side of the swelling part, where the hole opening ratio of the whole upper-upper stage 30 is set to about 40%.SELECTED DRAWING: Figure 2
【課題】 風下側に生じる吹きだまりを緩和し、風速を弱める効果が高くて視程を確保でき、コストも安い防風雪柵を提供する。【解決手段】 柵高さの約２／３の高さから下段を無孔板10とし、柵高さの約２／３の高さから約５／６の高さの上下段20の防風雪板は、垂直断面の形状が線対称な膨出部とからなり、膨出部の一方は風上に向かって上方が傾斜した傾斜面を有するとともに、前記傾斜面には多数の透孔を設け、膨出部の反対側は無孔として上下段20全体の開孔率を約２０％とし、柵高さの約５／６の高さから上端までの上上段30の防風雪板は、垂直断面の形状が線対称な膨出部と、膨出部の一方は風上に向かって上方が傾斜した傾斜面を有するとともに、前記傾斜面には多数の大透孔を設け、膨出部の反対側は小透孔を設け上上段30全体の開孔率を約４０％とした。【選択図】図２
WINDBREAK SNOW FENCE
PROBLEM TO BE SOLVED: To provide an inexpensive windbreak snow fence that relieves a snowdrift caused on the leeward side, has high effect of lessening wind speed, and is capable of securing visibility.SOLUTION: A lower stage from a height of about 2/3 of a fence height is formed as an unperforated plate 10, and a windbreak snow plate of upper-lower stages 20 at a height of about 2/3 to about 5/6 of the height of the fence height is composed of swelling parts being line symmetry in a shape of a vertical cross section. One of the swelling parts has an inclined plane whose an upper part is inclined toward upwind, and a large number of through-holes are provided in the inclined plane. The opposite side of the swelling part is formed as an unperforated hole, and a hole opening ratio of the whole upper-lower stages 20 is set to about 20%. A windbreak snow plate of the upper-upper stage 30 up to an upper end from a height of about 5/6 of the fence height comprises the swelling parts being line symmetry in the shape of the vertical cross section, and one of the swelling parts has an inclined plane whose upper part is inclined toward the upwind. A large number of large through-holes are provided in the inclined plane, and small through-holes are provided on the opposite side of the swelling part, where the hole opening ratio of the whole upper-upper stage 30 is set to about 40%.SELECTED DRAWING: Figure 2
【課題】 風下側に生じる吹きだまりを緩和し、風速を弱める効果が高くて視程を確保でき、コストも安い防風雪柵を提供する。【解決手段】 柵高さの約２／３の高さから下段を無孔板10とし、柵高さの約２／３の高さから約５／６の高さの上下段20の防風雪板は、垂直断面の形状が線対称な膨出部とからなり、膨出部の一方は風上に向かって上方が傾斜した傾斜面を有するとともに、前記傾斜面には多数の透孔を設け、膨出部の反対側は無孔として上下段20全体の開孔率を約２０％とし、柵高さの約５／６の高さから上端までの上上段30の防風雪板は、垂直断面の形状が線対称な膨出部と、膨出部の一方は風上に向かって上方が傾斜した傾斜面を有するとともに、前記傾斜面には多数の大透孔を設け、膨出部の反対側は小透孔を設け上上段30全体の開孔率を約４０％とした。【選択図】図２
WINDBREAK SNOW FENCE
防風雪柵
HIRATA KATSUJIRO (author) / SATO KAZUKI (author) / TANAKA HIROAKI (author)
2018-03-22
Patent
Electronic Resource
Japanese
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
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