大型预应力混凝土筒仓日照温差作用研究

The research of sunlight temperature difference on the large prestressed concrete coal silo

为探究一种较为完善合理的大型钢筋混凝土筒仓日照温差作用计算方法,对大型预应力混凝土贮煤筒仓进行了日照温差分布模拟和有限元计算分析,研究结果表明:日照温差作用下,筒仓结构在环向主要承受环向压力,环向压力呈筒仓顶层和底层两头大、中间小的规律分布;在0°<θ<180°区域内,筒仓结构同一高度、同一种类型的内力从日照面向背阴面呈递减规律变化。

In order to find a reasonable calculation method of sunlight temperature difference on the large prestressed concrete coal silo, this paper proceeds the distributed simulation and finite element analysis of the coal silo. This research results show that, with the effect of sunlight temperature difference, the silo structure is mainly under the circular pressure which distribute in both top and bottom of a silo with two big ends and a small middle. In the area of 0°〈θ〈180°, the internal force from the same height and same type of a silo changes with the declining rule from sunlight side to the shady parts.