摘要
通过对 72m和 90m两种跨度的平面预应力钢桁架进行优化分析 ,对不同结构方案进行了讨论 ,并基于大量的计算结果 ,分析了拉索式平面预应力钢桁架的布索形式、钢索预应力、外荷载、高跨比 (桁架高度 )等因素与结构用钢量、最大挠度比的关系 ,并得到了一组特征曲线。最后 。
The prestressed planar steel trusses with span of 72m and 90m are optimized, and the different schemes are discussed. Based on the computational results, the relationship between the factors of arrangement of steel cables, the prestress of the cables, external loads, the ratio of height to span of the structure and the factors of total amount of steel products and the maximum ratio of deflection to span are studied, upon which a set of characterized curves are obtained. Finally, the steel products of different structural plan and the needed maximum cross sectional area are compared and analyzed.
出处
《工业建筑》
CSCD
北大核心
2002年第3期50-53,共4页
Industrial Construction
基金
宁波市科委计划 (0 0 12 0 5 4)
宁波市重点博士资助项目
关键词
平面预应力
钢桁架
优化分析
大跨度
planar prestressed steel truss\ optimization analysis\ program discussion
