摘要
随机响应面法及基于随机响应面法的非侵入式随机有限元法是结构可靠度分析的新兴方法,适用于求解结构极限状态方程具有较强的非线性或极限状态方程呈隐式的问题。作为一种全局响应面法,相比于经典随机响应面法,随机响应面法具有明确的物理意义和数学意义上收敛的特性。研究推导了基于随机响应面法和几何法的结构可靠度敏感性分析公式,并应用于工程实例,对于该方法在重力坝结构可靠度分析中的应用作了有益的探索,验证了该方法的可行性。
The stochastic response surface method(SRSM)and the non-intrusive stochastic finite element method with SRSM have been introduced to structural reliability analysis recently,which are appropriate for solving the limit state equation characterized by strong nonlinearity or when the limit equation is implicit.As a whole response method,it has clear physical meaning and the character of mathematical convergence,compared with the traditional response surface method with sequential polynomials.In this paper,the formulas for structural sensitivity analysis based on SRSM and geometric method are studied and acquired,and are applied to structural reliability analysis of gravity dam.
作者
季昀
段杭
孟亚运
王霄
李同春
JI Yun;DUAN Hang;MENG Yayun;WANG Xiao;LI Tongchun(Large Dam Safety Supervision Center,National Energy Administration,Hangzhou 310014,Zhejiang,China;PowerChina Huadong Engineering Corporation Limited,Hangzhou 310014,Zhejiang,China;Baihetan Project Construction Department,China Three Gorges Development Co.,Ltd.,Chengdu 610041,Sichuan,China;PowerChina Zhongnan Engineering Corporation Limited,Changsha 410014,Hunan,China;Huaian Investigation and Design Institute of Water Conservancy,Huaian 223001,Jiangsu,China;College of Water Conservancy and Hydropower,Hohai University,Nanjing 210024,Jiangsu,China)
出处
《水力发电》
CAS
2023年第3期40-45,共6页
Water Power
关键词
结构可靠度
随机响应面
敏感性分析
重力坝
structural reliability
stochastic response surface method
sensitivity analysis
gravity dam
