摘要
针对高地震区高拱坝的抗震设计 ,从高拱坝的动力平衡方程出发 ,导出了基于拱坝体型特征量的状态控制方程 ,提出了拱坝结构抗震动力优化设计的数学模型 ,建立了动力最优化的能量目标函数。应用于小湾拱坝的抗震设计中 ,动力优化方案相对于初始方案 ,在应力指标和大坝体积上均得到改善 ,体现了较好的安全性与经济性 ,表明在动力优化设计中应用能量目标函数对提高拱坝抗震能力有效可行 ,具有综合的“多目标”
For anti seismic design of high arc dam in high seismic region,used dynamic balance equation of arc dam, state controllable equation based on body type characteristics of arc dam were derived. And mathematical method of anti seismic dynamic optimum design of arc dam was put forward. Energy objective function model of dynamic optimum design was established also.The anti seismic design of arc dam of Xiaowan Hydropower project was studied. Volume and stress of the optimum dam are improved,safety and economy of the optimum dam are better in comparison with the original design.Anti seismic ability of high arc dam can be raised by application of energy objective function on dynamic optimum design.The energy objective function is effective and practicable,and owns comprehensive multi objective character.
出处
《应用力学学报》
CAS
CSCD
北大核心
2002年第2期107-109,共3页
Chinese Journal of Applied Mechanics
基金
"九五"国家重点攻关项目 (96 2 2 1 0 4 0 2 0 1)
安徽省教委基金项目 (2 0 0 0JL178)
关键词
拱坝
动力优化
能量函数
状态方程
模态分析
抗震设计
arch dam,dynamic optimization,energy objective function,state controllable equation,model analysis.
