输煤栈桥,其上部的围护结构,长期以来,采用砖墙、大型屋面板,不仅造价高,而且耗用钢材较多。因其自重大,使下部结构(桁架、柱、基础)增加了工程量。无产阶级文化大革命运动,焕发了亿万人民的革命精神,沈阳市第三建筑工程公司 For the coal transportation trestle, the upper envelope structure has long used brick walls and large roof panels, which not only has a high cost but also consumes more steel. Because of its heavy weight, the substructure (truss, columns, foundations) has increased the amount of work. The proletarian cultural revolutionary movement has radiated the revolutionary spirit of hundreds of millions of people. The third construction company in Shenyang