摘要
基于复合土工膜在坝体中受力形式的分析,结合工程实例,采用三维非线性有限元对坝体及土工膜进行仿真数值模拟,分析了膜劲度对坝体变形的影响、膜受力变形特性及其影响因素。结果表明,土工膜劲度对坝体变形影响很小,对膜自身受力影响明显,膜在岸坡锚固处局部产生较大拉力。
Based on the brief discussion of main mechanical properties, three-dimensional nonlinear finite element method is applied to calculate the deformation and stress behaviors of composite geomembrane, and analyzed the effects of tensile strength of composite geomembrane on the deformation of dam body and the impact factors of the mechanical behaviors of composite geomembrane. The results show that the tensile strength of composite geomembrane has little effect on the deformation of dam body, but significant effect on the stress of itself, and some large local tensile stress of composite geomembrane exist at the anchorage place of the dam body with bank slope.
出处
《水电能源科学》
北大核心
2010年第3期91-94,137,共5页
Water Resources and Power
关键词
堆石坝
复合土工膜
变形
应力
三维有限元法
rockfill dam
composite geomembrane
deformation
stress
3D finite element method
作者简介
吴兆和（1984-），男，硕士研究生，研究方向为水工结构设计，E—mail：wzhaohe@163．com
通讯作者：沈长松（1954-），男，教授，研究方向为水工结构、水工建筑物安全监控等，E-mail：scs@hhu．edu．cn
