Study on safety technology of fall protection method to wind loads

2014 Fiscal Year Final Research Report

• Project/Area Number: 24510242
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: National Institute of Occupational Safety and Health, Japan
• Principal Investigator: TAKAHASHI Hiroki 独立行政法人労働安全衛生総合研究所, 建設安全研究グループ, 主任研究員 (90342617)
• Co-Investigator(Kenkyū-buntansha): OHDO Katsutoshi 独立行政法人労働安全衛生総合研究所, 災害調査分析センター, センター長 (50358420) ; TAKANASHI Seiji 独立行政法人労働安全衛生総合研究所, 建設安全研究グループ, 上席研究員 (60358421)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 墜落災害 / わく組足場 / 壁つなぎ / 幅木 / 風力係数 / 風洞実験 / 流体解析

Outline of Final Research Achievements

The Japanese Industrial Safety and Health Law was revised in March 2009. As part of this revision regulations were put in place to set the positions of guard rails and other scaffold components. Nevertheless, these provisions do not necessarily comply with the newly incorporated legal requirements because they apply to old-style scaffolds. This study examined the wind force on scaffolds by computational fluid dynamics and wind tunnel test, with baseboard height used as a parameter. From results, Wind force coefficient increased as baseboard height increased. The baseboard must be greater than or equal to 15 cm to satisfy regulation requirements. The wind force coefficient of scaffolds with a 15 cm baseboard is 1.5 times that of the scaffolds without a baseboard. In scaffold design, baseboard height should be considered to guarantee a suitable wind force coefficient. We proposed the calculation method for wind force on scaffolds with baseboards.

Free Research Field

社会安全