水利水电科技进展2018，Vol.38Issue(1)：50-54,74,6.DOI:10.3880/j.issn.1006-7647.2018.01.007
翻板抛投土工包沉落轨迹与落域
Settling trajectories and placement for geocontainers dumped from a bevel
摘要
Abstract
For the situation that the placement of bevel dumped geocontainers cannot be accurately predicted in estuarine and coastal engineering, theoretical computational formulas of the settling coordinates were presented through force analysis of the dumped geocontainers. Experimental study was carried out in a flume based on the construction parameters in practical engineering. Settling characteristics of the geocontainer were investigated under the condition of various water depth and flow velocities and thus empirical formulas of the drag coefficients were obtained. The comparison between experiment and calculation shows that the calculated trajectories of the geocontainer agree well with the experimental ones in shallow water. Geocontainers are more likely to rotate under the condition of deep water, which causes a slight increase in the dispersion of horizontal settling distance. For the geocontainers widely used in practical projects with 8 m in the perimeter of sand-filling opening, 62 m in length and 78. 54％ of the filling ratio, the horizontal and vertical drag coefficients of the geocontainer range from 0. 30 to 4. 27 and 0. 84 to 2. 53 respectively.关键词
土工包/翻板抛投/阻力系数/沉落距离/模型试验Key words
geocontainer/bevel dumping/drag coefficient/settling distance/model experiment分类
建筑与水利引用本文复制引用
刘欣欣,束一鸣,顾克,王晓娟..翻板抛投土工包沉落轨迹与落域[J].水利水电科技进展,2018,38(1):50-54,74,6.基金项目
国家自然科学基金(51179065) （51179065）
国家"十二五"科技支撑计划(2012BAB03B02) （2012BAB03B02）
江苏省高校优势学科建设工程项目(PAPD) （PAPD）
