土石坝加筋有限元数值模拟  

Numerical simulation to reinforcement of rockfill dam with geogrids

作　　者：王海涛[1] 

机构地区：[1]河北工程大学理学院,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2008年第3期34-37,共4页Journal of Hebei University of Engineering:Natural Science Edition

摘　　要：运用复合材料法模拟土工格栅加筋单元,对格栅加筋堆石坝坝顶堆石进行了数值模拟。计算中,土石料采用非线性弹性模型模拟,并用拟静力法模拟地震动荷载。对无地震和有地震两种情况下的加筋效果及加筋层数和格栅模量对加筋效果的影响进行了分析研究,并对格栅加筋机理加以解释。数值模拟结果表明:格栅加筋有利于增加土石坝坝顶堆石的稳定性和抗震性能,随加筋层数和格栅模量的增加,加筋效果愈加显著。Based on the assumption that geogrid and its surrounding soils being a composite material, the effect of reinforcement of dam crest rockfill with geogfids is studied by using nonlinear elastic finite element method. The influence of layer number and modulus of geogrids on effect of reinforcement is investigated. The results indicate that reinforcement is helpful in increasing stability and earthquake - resistant ability of dam crest mckfill. It also shows that effect of reinforcement becomes more evident with more layers and increasing modulus of geogrid.

关 键 词：土工格栅 加筋 数值模拟 堆石坝 拟静力法 

分 类 号：TV641[水利工程—水利水电工程]