摘要
在路堤非线性有限元分析基础上,考虑材料特性的随机性.根据Mohr-Columb破坏准则建立功能函数,其中,功能函数的随机变量的偏导值通过非线性随机有限元计算得到,然后采用JC法计算即可得到计算点的可靠指标.根据点可靠指标,寻找失效模式来分析路堤的整体稳定性,并采用降低c和tanφ值的思路得出路堤稳定的安全储备系数,并与定值方法指标进行比较.
Based on analysis of non - linear finite element for embankment and considerated mertiral stochastic, function could be gained on Mohr - Columb destroy rule and stochastic variable of function can be gained by non - linear stochastic finite element, then reliability index of calculating point could be gained by JC method. Embankment whole stability could be analysed by searching invalidation mode form reliability index of calculating point. Meanwhile, lowering the value of c and tanφ, soil stable safe reserve coefficient could be gained, which was compared with the safe coefficient and reliability index that was obtained by the way of deterministic method.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第1期128-132,共5页
Journal of Fuzhou University(Natural Science Edition)
基金
福州大学科技发展基金项目资助(0050824436)
关键词
可靠度分析
非线性
随机有限元
高填路堤
reliability analysis
non- linear
stochastic finite element
high embankment
