综合优化算法在矮塔斜拉桥中的应用  

Synthesis optimization algorithm applied to extradoses bridge

作　　者：周尚猛[1] 李亚东[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《四川建筑科学研究》2010年第4期62-66,共5页Sichuan Building Science

摘　　要：以三门江大桥为工程背景,建立零阶算法和一阶算法在矮塔斜拉桥索力优化中的计算模型,并选取了斜拉桥索力优化计算常用的方法——弯曲能量法、最小弯矩法,来分析矮塔斜拉桥恒载索力。在此基础上,提出了综合能量法和最小用索量方法来计算索力的方法,得出了几点对于类似桥梁索力优化分析的有益结论。在此过程中,对比了零阶算法和一阶算法在实际算例中的计算效率和计算规律。In the engineering background of Sanmenjiang bridge the optimization model of cable force of dead load is established based on zero order optimization arithmetic and one order optimization arithmetic.Furthermore bending energy method and most minimum moment method considered as some optimized algorithms are applied to analysis the cable force of dead load of the extradoses bridge.In the paper one method combined of bending energy method and the most minimum amount of cable material is put forward and designed,and beneficial conclusions are summed up.During the analysis process the calculation efficiency and law of zero order optimization arithmetic and one order optimization arithmetic are discussed.

关 键 词：矮塔斜拉桥 索力优化 零阶算法 一阶算法 弯曲能量 最小弯矩 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]