摘要
本文在计算拱坝应力的试载法中采用有限元地基,以克服伏格特(F.Vogt)地基的缺点。文中提出几种有效的试载法与有限元法的耦合方法,包括子结构法、迭代法和两种基于Sherman-Morrison-Woodbury(SMW)公式的直接法。最后对三座拱坝的有限元地基和伏格特地基的计算结果进行了比较。结果表明,两种地基所得的坝体底部应力相差较大。
In the trial load method for calculating arch-dam stress, this paper adopts the FEM to overcome shortcoming of the F. Vogt foundation. Several effective metheds of coupling the trial load method with the FEM are presented, including sub-structure, iteration and two kinds of direct methods based on a Sherman-Morrison-Woodbury(SMW) formula. Lastly, a comparison is made between the finite element and the Vogt foundations for three arch dams and results are shown that a greater diffe rence is made between the stresses obtained by two kinds of foundations at the bottom of dam body.
出处
《长江科学院院报》
CSCD
北大核心
1990年第4期8-17,共10页
Journal of Changjiang River Scientific Research Institute
关键词
试载法
拱坝
有限元
耦合法
arch dam
stress analysis
trial load method
finite element foundation
coupling method
