摘要
偏心出粮时,作用在粮仓上的侧压力增加,常是导致粮仓倒塌的主要原因。本文通过实验,报告了从一个模拟粮仓的三个不同位置的出粮孔出粮时,仓壁所受压力的变化。观察到出粮孔位置不同,产生的侧压力也不同。离出粮孔近侧仓壁受到的压力大于远侧的压力:偏心越大,压力越大。同时还观察到模拟仓一端为自由端时,其静态压力曲线与Janssen公式曲线并不相拟。
Increases in pressures during emptying of grain bins especially with eccentric unloading are usually responsible for bins' collapse. This paper reported lateral pressure changes on a model grain bin for three orifices which were located at different positions. It was observed that lateral pressures on the bin varied as a function of the position of the orifice. Emptying grain against one side wall caused the pressure greater on that side of the bin than that on the opposite side; the higher load was at the larger eccentric position; in addition, the lateral pressure curve did not follow the Janssen equation curve for a bin with one free end at the static condition.
出处
《黑龙江八一农垦大学学报》
1989年第2期83-88,共6页
journal of heilongjiang bayi agricultural university
关键词
粮仓
偏心卸粮
侧压力
仓壁
Grain bin, Eccentric unloading, Lateral pressure
