边坡人字形骨架防护骨架尖角设计研究
发布时间：2019-01-27 16:38
【摘要】：以广东龙川~怀集高速公路骨架防护工程为依托,探讨雨水在边坡上的运动规律。通过对人字形骨架内坡面薄层水流流速和边坡排水能力进行计算,对比分析不同尖角的人字形骨架的排水能力和工程量,得出如下结论:(1)土质草皮边坡汇水计算时,由于土体的渗透和草皮阻流的影响,入渗率λ的确定较复杂,可将(I-λ)项简化为ψqp,t,以简化计算;(2)在顺坡向间距和横向间距一定的情况下,人字形骨架的排水槽排水能力随尖角减小而增大,90°、75°、60°尖角人字形骨架排水能力变化量为9%~14%;(3)在顺坡向间距和横向间距一定的情况下,人字形骨架的工程量随骨架尖角的减小而增加,90°、75°、60°尖角人字形骨架工程量变化量为10%~25%;(4)在其他条件满足的情况下,人字形骨架尖角宜取较大值,人字形骨架尖角选取建议采用90°,在土质较好的边坡和半岩质边坡,可适当增大尖角。
[Abstract]:Based on the skeleton protection project of Long Chuan ~ Huaiji Expressway in Guangdong Province, this paper discusses the movement law of Rain Water on the slope. Based on the calculation of the flow velocity and the drainage capacity of the slope in the herringbone framework, the drainage capacity and the engineering quantity of the herringbone skeleton with different sharp angles are compared and analyzed. The conclusions are as follows: (1) in the calculation of the confluence of soil grass slope, Due to the influence of soil permeability and turf flow resistance, the determination of infiltration rate 位 is more complicated. The term (I- 位) can be simplified to 蠄 qp,t, to simplify the calculation. (2) the drainage capacity of the herringbone is increased with the decrease of the sharp angle, and the drainage capacity of the herringbone with 90 掳, 75 掳and 60 掳is 9 / 14. (3) with the decreasing of the angle of the skeleton, the engineering quantity of the herringbone increases with the decrease of the angle of the skeleton, and the engineering quantity of the herringbone with 90 掳, 75 掳and 60 掳is 10 ~ 25. (4) if other conditions are satisfied, it is appropriate to take a larger value for the herringbone sharp angle, and 90 掳for the herringbone skeleton cusp, which can increase the sharp angle properly in the soil slope and the half-rock slope.
【作者单位】： 长安大学公路学院;广东省南粤交通龙怀高速公路管理中心龙连管理处;广东省南粤交通仁博高速公路管理中心新博管理处;
【基金】：广东省交通运输厅科技计划项目,项目编号2014-02-006
【分类号】：U416.14
，
本文编号：2416466
[Abstract]:Based on the skeleton protection project of Long Chuan ~ Huaiji Expressway in Guangdong Province, this paper discusses the movement law of Rain Water on the slope. Based on the calculation of the flow velocity and the drainage capacity of the slope in the herringbone framework, the drainage capacity and the engineering quantity of the herringbone skeleton with different sharp angles are compared and analyzed. The conclusions are as follows: (1) in the calculation of the confluence of soil grass slope, Due to the influence of soil permeability and turf flow resistance, the determination of infiltration rate 位 is more complicated. The term (I- 位) can be simplified to 蠄 qp,t, to simplify the calculation. (2) the drainage capacity of the herringbone is increased with the decrease of the sharp angle, and the drainage capacity of the herringbone with 90 掳, 75 掳and 60 掳is 9 / 14. (3) with the decreasing of the angle of the skeleton, the engineering quantity of the herringbone increases with the decrease of the angle of the skeleton, and the engineering quantity of the herringbone with 90 掳, 75 掳and 60 掳is 10 ~ 25. (4) if other conditions are satisfied, it is appropriate to take a larger value for the herringbone sharp angle, and 90 掳for the herringbone skeleton cusp, which can increase the sharp angle properly in the soil slope and the half-rock slope.
【作者单位】： 长安大学公路学院;广东省南粤交通龙怀高速公路管理中心龙连管理处;广东省南粤交通仁博高速公路管理中心新博管理处;
【基金】：广东省交通运输厅科技计划项目,项目编号2014-02-006
【分类号】：U416.14
，
本文编号：2416466
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2416466.html
