摘要
针对实际工程中的复杂地基问题,本文以间接边界元法——不连续位移法和不连续应力法为基础,按增量变刚度法建立了软弱夹层问题的非线性边界元法,其中软弱夹层用非线性节理单元模拟,然后用这个方法分析了重力坝深层抗滑稳定问题并给出了算例。算例表明该方法应用方便灵活、工作量小、能节省机时减少计算费用,而且能获得令人满意的安全度指标和位移应力的变化规律,是分析这类问题的一种较合理的计算方法。
In view of complicated foundation problems in engineerings, this paper, based on indirect BEM-discontinuous displacement method and discontinuous stress method, estabilishes non-linear BEM for the problems of weak intercalated bed modeled by joint elements with cohesion and friction by using the method of incremental varying stiffnesses. Then the BEM is applied here to analyzing the slide-proof stability of deep layers in the gravity dam foundation. The result shows the method is a rational numer-ical one for such problems.
出处
《武汉水利电力大学学报》
CSCD
1993年第1期121-126,共6页
Engineering Journal of Wuhan University
关键词
非线性
边界元
重力坝
抗滑稳定
gravity dam
boundary element
weak intercalated bed
slide-proof stability
