横观各向同性层状岩石地基对高拱坝的影响  

Influence of isotropic layered rock foundation to high arch dam

作　　者：杨令强[1] 武甲庆[2] 秦冰 

机构地区：[1]济南大学土木建筑学院,山东济南250022 [2]山东省水利厅,山东济南250013 [3]山东水利设计院,山东济南250013

出　　处：《水资源与水工程学报》2007年第3期6-9,共4页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金资助项目(59778002);济南大学博士基金资助项目(B0533)

摘　　要：层状岩体具有明显的各向异性,其材料参数和屈服准则是层面方向的函数,本文给出了线弹性和弹塑性横观各向同性体的本构关系,并对横观各向同性对高拱坝的动、静力影响进行了研究,结果表明,横观各向同性对拱坝的位移和应力影响是非常明显的,特别是两岸岩层分布不一致的情况下影响更严重;横观各向同性对拱坝动力特性的影响比对静力的影响显著,不但对频率有所影响,而且振型也变化很大,并且对高阶振型的影响要比低阶振型严重。The layered rock mass is of obvious anisotropic mechanical behavior, the material parameter and yield law should be a function of inclination with respect to the layered plane. In the paper, the elasticity and elasticity--plasticity constitutive equation has been given. And the influence of transversely isotropic to arch dam has been analysis. The result shows the influence is very obvious in stess and displaces analysis, especially to asymmetry rock foundation on left and right bank. The influence is more severity to modal analysis than to static analysis. Not only the frequency, but also the mode shape has been affected, especially to high model.

关 键 词：高拱坝 横观各向同性 弹塑性 动力特性 

分 类 号：TV31[水利工程—水工结构工程]