摘要
本文以主梁弯曲应变能最小及塔高最小为目标函数 ,建立了矮塔斜拉桥塔高优化模型 ,探讨了通过调整拉索初张力优化 (降低 )矮塔斜拉桥塔高的可行性。本文以一矮塔斜拉桥为背景 ,分析了独塔两跨矮塔斜拉桥塔高变化时调整拉索初张力的效果 。
With objective functions the minimum strain energy of girder's and minimum height of pagoda, the optimal model of pagoda height of low pagoda cable-stayed bridge is built, and the feasibility of reducing the height of pagoda by adjusting cable's prestress is investigated. Taking a low pagoda cable-stayed bridge as an example, the paper analyze the effect of adjusting cable's prestress when change the pagoda height of low pagoda cable-stayed bridge with single-two and two-spans. The conclusions are valuable referenec for further understand the characteristics of low pagoda cable-stayed bridge and the optimal design of pagoda height of other similar structures.
出处
《铁道工程学报》
EI
2003年第4期71-74,66,共5页
Journal of Railway Engineering Society
关键词
矮塔
斜拉桥
塔高优化
优化设计
张力
结构性能
low pagoda
cable-stayed bridge
influence matrix
pagoda height
optimal design
