论文部分内容阅读
渡市洗选厂输煤栈桥为两跨长各为44.8m、宽4.74m钢结构栈桥,与同类栈桥相比,具有省钢、垂直挠度、水平位移小等优点,主要措施是:(1)采用轻型围护结构。(2)采用以高强度钢绞线作为预应力拉杆的预应力钢结构五阶段设计。(3)选择了良好的截面型式和部分型钢采用16锰钢。 这种结构不仅能节约钢材50％左右,而且可以达到大跨度,它的应用并不限于输煤栈桥,用在任何大跨度超静定结构中都可以取得明显的经济效益。 本文将重点介绍预应力钢结构五阶段设计、施工、测试及分析情况。
The main measures are as follows: (1) The coal handling trestle of Dudian Washing Plant is 44.8m long and 4.74m wide in width. Compared with similar trestle, it has the advantages of provincial steel, vertical deflection and small horizontal displacement. Lightweight enclosure. (2) Five-stage design of prestressed steel structure with high-strength steel strand as prestressed tie rod. (3) Select a good cross-section type and part of the use of 16 manganese steel. This structure can not only save about 50% of the steel, but also can achieve a large span, its application is not limited to coal trestle, used in any large-span statically indeterminate structure can obtain significant economic benefits. This article will focus on five stages of prestressed steel structure design, construction, testing and analysis.